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1eee94d3 GM |
1 | (* SymbolTable.mod provides access to the symbol table. |
2 | ||
a945c346 | 3 | Copyright (C) 2001-2024 Free Software Foundation, Inc. |
1eee94d3 GM |
4 | Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>. |
5 | ||
6 | This file is part of GNU Modula-2. | |
7 | ||
8 | GNU Modula-2 is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GNU Modula-2 is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Modula-2; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. *) | |
21 | ||
22 | IMPLEMENTATION MODULE SymbolTable ; | |
23 | ||
24 | ||
25 | FROM SYSTEM IMPORT ADDRESS, ADR ; | |
26 | FROM Storage IMPORT ALLOCATE, DEALLOCATE ; | |
27 | FROM M2Debug IMPORT Assert ; | |
28 | FROM libc IMPORT printf ; | |
29 | ||
30 | IMPORT Indexing ; | |
31 | FROM Indexing IMPORT InitIndex, InBounds, LowIndice, HighIndice, PutIndice, GetIndice ; | |
32 | FROM Sets IMPORT Set, InitSet, IncludeElementIntoSet, IsElementInSet ; | |
33 | FROM m2linemap IMPORT location_t ; | |
34 | ||
81d5ca0b | 35 | FROM M2Options IMPORT Pedantic, ExtendedOpaque, DebugFunctionLineNumbers, ScaffoldDynamic, DebugBuiltins ; |
1eee94d3 GM |
36 | |
37 | FROM M2LexBuf IMPORT UnknownTokenNo, TokenToLineNo, | |
38 | FindFileNameFromToken, TokenToLocation ; | |
39 | ||
40 | FROM M2ALU IMPORT InitValue, PtrToValue, PushCard, PopInto, | |
41 | PushString, PushFrom, PushChar, PushInt, | |
42 | IsSolved, IsValueConst ; | |
43 | ||
44 | FROM M2Error IMPORT Error, NewError, ChainError, InternalError, | |
45 | ErrorFormat0, ErrorFormat1, ErrorFormat2, | |
46 | WriteFormat0, WriteFormat1, WriteFormat2, ErrorString, | |
47 | ErrorAbort0, FlushErrors, ErrorScope, GetCurrentErrorScope ; | |
48 | ||
49 | FROM M2MetaError IMPORT MetaError1, MetaError2, MetaError3, MetaErrors1, | |
50 | MetaErrorT0, | |
51 | MetaErrorString1, | |
52 | MetaErrorStringT0, MetaErrorStringT1, | |
53 | MetaErrorT1, MetaErrorT2 ; | |
54 | ||
55 | FROM M2LexBuf IMPORT GetTokenNo ; | |
56 | FROM FormatStrings IMPORT Sprintf1 ; | |
57 | FROM M2Printf IMPORT printf0, printf1, printf2, printf3, printf4 ; | |
58 | ||
59 | FROM DynamicStrings IMPORT String, string, InitString, | |
60 | InitStringCharStar, Mark, KillString, Length, ConCat, | |
61 | Index, char ; | |
62 | ||
63 | FROM Lists IMPORT List, InitList, GetItemFromList, PutItemIntoList, | |
64 | IsItemInList, IncludeItemIntoList, NoOfItemsInList, | |
65 | RemoveItemFromList, ForeachItemInListDo ; | |
66 | ||
67 | FROM NameKey IMPORT Name, MakeKey, makekey, NulName, WriteKey, LengthKey, GetKey, KeyToCharStar ; | |
68 | ||
69 | FROM SymbolKey IMPORT NulKey, SymbolTree, IsSymbol, | |
70 | InitTree, | |
71 | GetSymKey, PutSymKey, DelSymKey, IsEmptyTree, | |
72 | DoesTreeContainAny, ForeachNodeDo, ForeachNodeConditionDo, | |
73 | NoOfNodes ; | |
74 | ||
75 | FROM M2Base IMPORT MixTypes, InitBase, Char, Integer, LongReal, | |
76 | Cardinal, LongInt, LongCard, ZType, RType ; | |
77 | ||
78 | FROM M2System IMPORT Address ; | |
9693459e | 79 | FROM m2expr IMPORT OverflowZType ; |
1eee94d3 GM |
80 | FROM m2tree IMPORT Tree ; |
81 | FROM m2linemap IMPORT BuiltinsLocation ; | |
82 | FROM StrLib IMPORT StrEqual ; | |
81d5ca0b | 83 | FROM m2builtins IMPORT BuiltinExists ; |
1eee94d3 GM |
84 | |
85 | FROM M2Comp IMPORT CompilingDefinitionModule, | |
86 | CompilingImplementationModule ; | |
87 | ||
88 | FROM FormatStrings IMPORT HandleEscape ; | |
89 | FROM M2Scaffold IMPORT DeclareArgEnvParams ; | |
90 | ||
b0762d4c GM |
91 | FROM M2SymInit IMPORT InitDesc, InitSymInit, GetInitialized, ConfigSymInit, |
92 | SetInitialized, SetFieldInitialized, GetFieldInitialized, | |
93 | PrintSymInit ; | |
94 | ||
1eee94d3 GM |
95 | IMPORT Indexing ; |
96 | ||
97 | ||
98 | CONST | |
99 | DebugUnknowns = FALSE ; | |
100 | ||
101 | (* | |
102 | The Unbounded is a pseudo type used within the compiler | |
103 | to implement dynamic parameter arrays. It is implmented | |
104 | as a record structure which has the following fields: | |
105 | ||
106 | RECORD | |
107 | _m2_contents: POINTER TO type ; | |
108 | _m2_high : CARDINAL ; | |
109 | END ; | |
110 | *) | |
111 | ||
112 | UnboundedAddressName = "_m2_contents" ; | |
113 | UnboundedHighName = "_m2_high_%d" ; | |
114 | ||
115 | TYPE | |
d5e2694e GM |
116 | ConstLitPoolEntry = POINTER TO RECORD |
117 | sym : CARDINAL ; | |
118 | tok : CARDINAL ; | |
119 | constName: Name ; | |
120 | constType: CARDINAL ; | |
121 | next : ConstLitPoolEntry ; | |
122 | END ; | |
123 | ||
1eee94d3 GM |
124 | LRLists = ARRAY [RightValue..LeftValue] OF List ; |
125 | ||
b0762d4c GM |
126 | LRInitDesc = ARRAY [RightValue..LeftValue] OF InitDesc ; |
127 | ||
1eee94d3 GM |
128 | TypeOfSymbol = (RecordSym, VarientSym, DummySym, |
129 | VarSym, EnumerationSym, SubrangeSym, ArraySym, | |
130 | ConstStringSym, ConstVarSym, ConstLitSym, | |
131 | VarParamSym, ParamSym, PointerSym, | |
132 | UndefinedSym, TypeSym, | |
133 | RecordFieldSym, VarientFieldSym, EnumerationFieldSym, | |
134 | DefImpSym, ModuleSym, SetSym, ProcedureSym, ProcTypeSym, | |
135 | SubscriptSym, UnboundedSym, GnuAsmSym, InterfaceSym, | |
136 | ObjectSym, PartialUnboundedSym, TupleSym, OAFamilySym, | |
137 | ImportSym, ImportStatementSym, | |
138 | EquivSym, ErrorSym) ; | |
139 | ||
140 | Where = RECORD | |
141 | DefDeclared, | |
142 | ModDeclared, | |
143 | FirstUsed : CARDINAL ; | |
144 | END ; | |
145 | ||
146 | PackedInfo = RECORD | |
147 | IsPacked : BOOLEAN ; (* is this type packed? *) | |
148 | PackedEquiv : CARDINAL ; (* the equivalent packed type *) | |
149 | END ; | |
150 | ||
151 | PtrToAsmConstraint = POINTER TO RECORD | |
990d10ab GM |
152 | tokpos: CARDINAL ; |
153 | name : Name ; | |
154 | str : CARDINAL ; (* regnames or constraints *) | |
155 | obj : CARDINAL ; (* list of M2 syms *) | |
1eee94d3 GM |
156 | END ; |
157 | ||
158 | ModuleCtor = RECORD | |
159 | ctor: CARDINAL ; (* Procedure which will become a ctor. *) | |
160 | init: CARDINAL ; (* Module initialization block proc. *) | |
161 | fini: CARDINAL ; (* Module Finalization block proc. *) | |
162 | dep : CARDINAL ; (* Module dependency proc. *) | |
163 | END ; | |
164 | ||
165 | (* Each import list has a import statement symbol. *) | |
166 | ||
167 | SymImportStatement = RECORD | |
168 | listNo : CARDINAL ; (* The import list no. *) | |
169 | ListOfImports: List ; (* Vector of SymImports. *) | |
170 | at : Where ; (* The FROM or IMPORT token. *) | |
171 | END ; | |
172 | ||
173 | SymImport = RECORD | |
174 | module : CARDINAL ; (* The module imported. *) | |
175 | listNo : CARDINAL ; (* The import list no. *) | |
176 | qualified: BOOLEAN ; (* Is the complete module imported? *) | |
177 | at : Where ; (* token corresponding to the *) | |
178 | (* module name in the import. *) | |
179 | END ; | |
180 | ||
181 | SymEquiv = RECORD | |
182 | packedInfo: PackedInfo ; | |
183 | nonPacked : CARDINAL ; | |
184 | END ; | |
185 | ||
186 | SymOAFamily = RECORD | |
187 | MaxDimensions: CARDINAL ; | |
188 | SimpleType : CARDINAL ; | |
189 | Dimensions : Indexing.Index ; | |
190 | END ; | |
191 | ||
192 | SymTuple = RECORD | |
193 | At : Where ; | |
194 | nTuple: CARDINAL ; | |
195 | list : Indexing.Index ; | |
196 | END ; | |
197 | ||
198 | SymError = RECORD | |
199 | name : Name ; | |
200 | At : Where ; (* Where was sym declared/used *) | |
201 | END ; | |
202 | ||
203 | SymObject = RECORD | |
204 | name : Name ; | |
205 | At : Where ; (* Where was sym declared/used *) | |
206 | END ; | |
207 | ||
208 | SymUndefined = RECORD | |
209 | name : Name ; (* Index into name array, name *) | |
210 | (* of record. *) | |
211 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
212 | errorScope: ErrorScope ; (* Title scope used if an *) | |
213 | (* error is emitted. *) | |
214 | At : Where ; (* Where was sym declared/used *) | |
215 | END ; | |
216 | ||
217 | SymGnuAsm = RECORD | |
218 | String : CARDINAL ; (* (ConstString) the assembly *) | |
219 | (* instruction. *) | |
220 | At : Where ; (* Where was sym declared/used *) | |
221 | Inputs, | |
222 | Outputs, | |
223 | Trashed : CARDINAL ; (* The interface symbols. *) | |
224 | Volatile : BOOLEAN ; (* Declared as ASM VOLATILE ? *) | |
225 | Simple : BOOLEAN ; (* is a simple kind? *) | |
226 | END ; | |
227 | ||
228 | SymInterface = RECORD | |
229 | Parameters: Indexing.Index ; | |
230 | (* regnames or constraints *) | |
231 | (* list of M2 syms. *) | |
232 | At : Where ; (* Where was sym declared/used *) | |
233 | END ; | |
234 | ||
235 | SymVarient = RECORD | |
236 | Size : PtrToValue ; (* Size at runtime of symbol. *) | |
237 | ListOfSons : List ; (* ListOfSons contains a list *) | |
238 | (* of SymRecordField and *) | |
239 | (* SymVarients *) | |
240 | (* declared by the source *) | |
241 | (* file. *) | |
242 | DeclPacked : BOOLEAN ; (* Is this varient packed? *) | |
243 | DeclResolved: BOOLEAN ; (* has we resolved packed? *) | |
244 | Parent : CARDINAL ; (* Points to the parent symbol *) | |
245 | Varient : CARDINAL ; (* Index into symbol table to *) | |
246 | (* determine the associated *) | |
247 | (* varient symbol. *) | |
248 | tag : CARDINAL ; (* The tag of the varient *) | |
249 | (* this can either be a type *) | |
250 | (* or a varient field. *) | |
251 | Scope : CARDINAL ; (* Scope of declaration. *) | |
252 | At : Where ; (* Where was sym declared/used *) | |
253 | END ; | |
254 | ||
255 | SymRecord = RECORD | |
256 | name : Name ; (* Index into name array, name *) | |
257 | (* of record. *) | |
258 | LocalSymbols : SymbolTree ; (* Contains all record fields. *) | |
259 | Size : PtrToValue ; (* Size at runtime of symbol. *) | |
260 | ListOfSons : List ; (* ListOfSons contains a list *) | |
261 | (* of SymRecordField and *) | |
262 | (* SymVarients *) | |
263 | (* declared by the source *) | |
264 | (* file. *) | |
265 | Align : CARDINAL ; (* The alignment of this type. *) | |
266 | DefaultAlign : CARDINAL ; (* The default field alignment *) | |
267 | DeclPacked : BOOLEAN ; (* Is this record packed? *) | |
268 | DeclResolved : BOOLEAN ; (* has we resolved packed? *) | |
269 | oafamily : CARDINAL ; (* The oafamily for this sym. *) | |
270 | Parent : CARDINAL ; (* Points to the parent symbol *) | |
271 | Scope : CARDINAL ; (* Scope of declaration. *) | |
272 | At : Where ; (* Where was sym declared/used *) | |
273 | END ; | |
274 | ||
275 | SymSubrange = RECORD | |
276 | name : Name ; (* Index into name array, name *) | |
277 | (* of subrange. *) | |
278 | Low : CARDINAL ; (* Index to symbol for lower *) | |
279 | High : CARDINAL ; (* Index to symbol for higher *) | |
280 | Size : PtrToValue ; (* Size of subrange type. *) | |
281 | Type : CARDINAL ; (* Index to type symbol for *) | |
282 | (* the type of subrange. *) | |
2b783fe2 | 283 | Align : CARDINAL ; (* Alignment for this type. *) |
1eee94d3 GM |
284 | ConstLitTree: SymbolTree ; (* constants of this type. *) |
285 | packedInfo : PackedInfo ; (* the equivalent packed type *) | |
286 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
287 | Scope : CARDINAL ; (* Scope of declaration. *) | |
288 | At : Where ; (* Where was sym declared/used *) | |
289 | END ; | |
290 | ||
291 | SymEnumeration = | |
292 | RECORD | |
293 | name : Name ; (* Index into name array, name *) | |
294 | (* of enumeration. *) | |
295 | NoOfElements: CARDINAL ; (* No elements in enumeration *) | |
296 | LocalSymbols: SymbolTree ; (* Contains all enumeration *) | |
89b58667 GM |
297 | (* fields (alphabetical). *) |
298 | ListOfFields: List ; (* Ordered as declared. *) | |
1eee94d3 GM |
299 | Size : PtrToValue ; (* Size at runtime of symbol. *) |
300 | packedInfo : PackedInfo ; (* the equivalent packed type *) | |
301 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
302 | Scope : CARDINAL ; (* Scope of declaration. *) | |
303 | At : Where ; (* Where was sym declared/used *) | |
304 | END ; | |
305 | ||
306 | SymArray = RECORD | |
307 | name : Name ; (* Index into name array, name *) | |
308 | (* of array. *) | |
309 | Subscript : CARDINAL ; (* the subscript for this *) | |
310 | (* array. *) | |
311 | Size : PtrToValue ; (* Size at runtime of symbol. *) | |
312 | Offset : PtrToValue ; (* Offset at runtime of symbol *) | |
313 | Type : CARDINAL ; (* Type of the Array. *) | |
314 | Align : CARDINAL ; (* Alignment for this type. *) | |
315 | Large : BOOLEAN ; (* is this a large array? *) | |
316 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
317 | Scope : CARDINAL ; (* Scope of declaration. *) | |
318 | At : Where ; (* Where was sym declared/used *) | |
319 | END ; | |
320 | ||
321 | SymSubscript = RECORD | |
322 | Type : CARDINAL ; (* Index to a subrange symbol. *) | |
323 | Size : PtrToValue ; (* Size of this indice in*Size *) | |
324 | Offset : PtrToValue ; (* Offset at runtime of symbol *) | |
325 | (* Pseudo ie: Offset+Size*i *) | |
326 | (* 1..n. The array offset is *) | |
327 | (* the real memory offset. *) | |
328 | (* This offset allows the a[i] *) | |
329 | (* to be calculated without *) | |
330 | (* the need to perform *) | |
331 | (* subtractions when a[4..10] *) | |
332 | (* needs to be indexed. *) | |
333 | At : Where ; (* Where was sym declared/used *) | |
334 | END ; | |
335 | ||
336 | SymUnbounded = RECORD | |
337 | Type : CARDINAL ; (* Index to Simple type symbol *) | |
338 | Size : PtrToValue ;(* Max No of words ever *) | |
339 | (* passed to this type. *) | |
340 | RecordType : CARDINAL ; (* Record type used to *) | |
341 | (* implement the unbounded. *) | |
342 | Dimensions : CARDINAL ; (* No of dimensions this | |
343 | open array uses. *) | |
344 | Scope : CARDINAL ; (* Scope of declaration. *) | |
345 | At : Where ; (* Where was sym declared/used *) | |
346 | END ; | |
347 | ||
348 | SymPartialUnbounded = RECORD | |
349 | Type: CARDINAL ; (* Index to Simple type symbol *) | |
350 | NDim: CARDINAL ; (* dimensions associated *) | |
351 | END ; | |
352 | ||
353 | SymProcedure | |
354 | = RECORD | |
355 | name : Name ; (* Index into name array, name *) | |
356 | (* of procedure. *) | |
357 | ListOfParam : List ; (* Contains a list of all the *) | |
358 | (* parameters in this procedure. *) | |
359 | ParamDefined : BOOLEAN ; (* Have the parameters been *) | |
360 | (* defined yet? *) | |
361 | DefinedInDef : BOOLEAN ; (* Were the parameters defined *) | |
362 | (* in the Definition module? *) | |
363 | (* Note that this depends on *) | |
364 | (* whether the compiler has read *) | |
365 | (* the .def or .mod first. *) | |
366 | (* The second occurence is *) | |
367 | (* compared to the first. *) | |
368 | DefinedInImp : BOOLEAN ; (* Were the parameters defined *) | |
369 | (* in the Implementation module? *) | |
370 | (* Note that this depends on *) | |
371 | (* whether the compiler has read *) | |
372 | (* the .def or .mod first. *) | |
373 | (* The second occurence is *) | |
374 | (* compared to the first. *) | |
375 | HasVarArgs : BOOLEAN ; (* Does this procedure use ... ? *) | |
376 | HasOptArg : BOOLEAN ; (* Does this procedure use [ ] ? *) | |
377 | OptArgInit : CARDINAL ; (* The optarg initial value. *) | |
378 | IsBuiltin : BOOLEAN ; (* Was it declared __BUILTIN__ ? *) | |
379 | BuiltinName : Name ; (* name of equivalent builtin *) | |
380 | IsInline : BOOLEAN ; (* Was it declared __INLINE__ ? *) | |
94673a12 | 381 | IsNoReturn : BOOLEAN ; (* Attribute noreturn ? *) |
1eee94d3 GM |
382 | ReturnOptional: BOOLEAN ; (* Is the return value optional? *) |
383 | IsExtern : BOOLEAN ; (* Make this procedure extern. *) | |
384 | IsPublic : BOOLEAN ; (* Make this procedure visible. *) | |
385 | IsCtor : BOOLEAN ; (* Is this procedure a ctor? *) | |
386 | IsMonoName : BOOLEAN ; (* Ignores module name prefix. *) | |
387 | Unresolved : SymbolTree ; (* All symbols currently *) | |
388 | (* unresolved in this procedure. *) | |
389 | ScopeQuad : CARDINAL ; (* Index into quads for scope *) | |
390 | StartQuad : CARDINAL ; (* Index into quads for start *) | |
391 | (* of procedure. *) | |
392 | EndQuad : CARDINAL ; (* Index into quads for end of *) | |
393 | (* procedure. *) | |
394 | Reachable : BOOLEAN ; (* Defines if procedure will *) | |
395 | (* ever be called by the main *) | |
396 | (* Module. *) | |
397 | SavePriority : BOOLEAN ; (* Does procedure need to save *) | |
398 | (* and restore interrupts? *) | |
399 | ReturnType : CARDINAL ; (* Return type for function. *) | |
400 | Offset : CARDINAL ; (* Location of procedure used *) | |
401 | (* in Pass 2 and if procedure *) | |
402 | (* is a syscall. *) | |
403 | LocalSymbols: SymbolTree ; (* Contains all symbols declared *) | |
404 | (* within this procedure. *) | |
405 | EnumerationScopeList: List ; | |
406 | (* Enumeration scope list which *) | |
407 | (* contains a list of all *) | |
408 | (* enumerations which are *) | |
409 | (* visable within this scope. *) | |
410 | ListOfVars : List ; (* List of variables in this *) | |
411 | (* scope. *) | |
412 | ListOfProcs : List ; (* List of all procedures *) | |
413 | (* declared within this *) | |
414 | (* procedure. *) | |
415 | NamedObjects : SymbolTree ; (* Names of all items declared. *) | |
416 | Size : PtrToValue ; (* Activation record size. *) | |
417 | TotalParamSize: PtrToValue ; (* size of all parameters. *) | |
418 | ExceptionFinally, | |
419 | ExceptionBlock: BOOLEAN ; (* does it have an exception? *) | |
420 | Scope : CARDINAL ; (* Scope of declaration. *) | |
421 | errorScope : ErrorScope ; (* The title scope. *) | |
422 | ListOfModules : List ; (* List of all inner modules. *) | |
423 | Begin, End : CARDINAL ; (* Tokens marking the BEGIN END *) | |
424 | At : Where ; (* Where was sym declared/used *) | |
425 | END ; | |
426 | ||
427 | SymProcType | |
428 | = RECORD | |
429 | name : Name ; (* Index into name array, name *) | |
430 | (* of procedure. *) | |
431 | ListOfParam : List ; (* Contains a list of all the *) | |
432 | (* parameters in this procedure. *) | |
433 | HasVarArgs : BOOLEAN ; (* Does this proc type use ... ? *) | |
434 | HasOptArg : BOOLEAN ; (* Does this procedure use [ ] ? *) | |
435 | OptArgInit : CARDINAL ; (* The optarg initial value. *) | |
436 | ReturnType : CARDINAL ; (* Return type for function. *) | |
437 | ReturnOptional: BOOLEAN ; (* Is the return value optional? *) | |
438 | Scope : CARDINAL ; (* Scope of declaration. *) | |
439 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
440 | TotalParamSize: PtrToValue ; (* size of all parameters. *) | |
441 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
442 | At : Where ; (* Where was sym declared/used *) | |
443 | END ; | |
444 | ||
445 | SymParam = RECORD | |
446 | name : Name ; (* Index into name array, name *) | |
447 | (* of param. *) | |
448 | Type : CARDINAL ; (* Index to the type of param. *) | |
083e7857 | 449 | IsUnbounded : BOOLEAN ; (* Is it an ARRAY OF Type? *) |
1eee94d3 GM |
450 | ShadowVar : CARDINAL ; (* The local variable used to *) |
451 | (* shadow this parameter. *) | |
452 | At : Where ; (* Where was sym declared/used *) | |
453 | END ; | |
454 | ||
455 | SymVarParam = RECORD | |
456 | name : Name ; (* Index into name array, name *) | |
457 | (* of param. *) | |
458 | Type : CARDINAL ;(* Index to the type of param. *) | |
083e7857 GM |
459 | IsUnbounded : BOOLEAN ; (* Is it an ARRAY OF Type? *) |
460 | HeapVar : CARDINAL ;(* The pointer value on heap. *) | |
461 | (* Only used by static *) | |
462 | (* analysis. *) | |
1eee94d3 GM |
463 | ShadowVar : CARDINAL ;(* The local variable used to *) |
464 | (* shadow this parameter. *) | |
465 | At : Where ; (* Where was sym declared/used *) | |
466 | END ; | |
467 | ||
468 | ConstStringVariant = (m2str, cstr, m2nulstr, cnulstr) ; | |
469 | ||
470 | SymConstString | |
471 | = RECORD | |
472 | name : Name ; (* Index into name array, name *) | |
473 | (* of const. *) | |
474 | Contents : Name ; (* Contents of the string. *) | |
475 | Length : CARDINAL ; (* StrLen (Contents) *) | |
476 | M2Variant, | |
477 | NulM2Variant, | |
478 | CVariant, | |
479 | NulCVariant : CARDINAL ; (* variants of the same string *) | |
480 | StringVariant : ConstStringVariant ; | |
481 | Scope : CARDINAL ; (* Scope of declaration. *) | |
482 | At : Where ; (* Where was sym declared/used *) | |
483 | END ; | |
484 | ||
485 | SymConstLit = RECORD | |
486 | name : Name ; (* Index into name array, name *) | |
487 | (* of const. *) | |
488 | Value : PtrToValue ; (* Value of the constant. *) | |
489 | Type : CARDINAL ; (* TYPE of constant, char etc *) | |
490 | IsSet : BOOLEAN ; (* is the constant a set? *) | |
491 | IsConstructor: BOOLEAN ; (* is the constant a set? *) | |
492 | FromType : CARDINAL ; (* type is determined FromType *) | |
d5e2694e | 493 | RangeError : BOOLEAN ; (* Have we reported an error? *) |
1eee94d3 GM |
494 | UnresFromType: BOOLEAN ; (* is Type unresolved? *) |
495 | Scope : CARDINAL ; (* Scope of declaration. *) | |
496 | At : Where ; (* Where was sym declared/used *) | |
497 | END ; | |
498 | ||
499 | SymConstVar = RECORD | |
500 | name : Name ; (* Index into name array, name *) | |
501 | (* of const. *) | |
502 | Value : PtrToValue ; (* Value of the constant *) | |
503 | Type : CARDINAL ; (* TYPE of constant, char etc *) | |
504 | IsSet : BOOLEAN ; (* is the constant a set? *) | |
505 | IsConstructor: BOOLEAN ; (* is the constant a set? *) | |
506 | FromType : CARDINAL ; (* type is determined FromType *) | |
507 | UnresFromType: BOOLEAN ; (* is Type resolved? *) | |
508 | IsTemp : BOOLEAN ; (* is it a temporary? *) | |
509 | Scope : CARDINAL ; (* Scope of declaration. *) | |
510 | At : Where ; (* Where was sym declared/used *) | |
511 | END ; | |
512 | ||
513 | SymVar = RECORD | |
514 | name : Name ; (* Index into name array, name *) | |
515 | (* of const. *) | |
516 | Type : CARDINAL ; (* Index to a type symbol. *) | |
517 | BackType : CARDINAL ; (* specific back end symbol. *) | |
518 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
519 | Offset : PtrToValue ; (* Offset at runtime of symbol *) | |
520 | AddrMode : ModeOfAddr ; (* Type of Addressing mode. *) | |
521 | Scope : CARDINAL ; (* Scope of declaration. *) | |
522 | AtAddress : BOOLEAN ; (* Is declared at address? *) | |
523 | Address : CARDINAL ; (* Address at which declared *) | |
524 | IsComponentRef: BOOLEAN ; (* Is temporary referencing a *) | |
525 | (* record field? *) | |
526 | list : Indexing.Index ; (* the record and fields *) | |
527 | IsTemp : BOOLEAN ; (* Is variable a temporary? *) | |
528 | IsParam : BOOLEAN ; (* Is variable a parameter? *) | |
529 | IsPointerCheck: BOOLEAN ; (* Is variable used to *) | |
530 | (* dereference a pointer? *) | |
531 | IsWritten : BOOLEAN ; (* Is variable written to? *) | |
532 | IsSSA : BOOLEAN ; (* Is variable a SSA? *) | |
533 | IsConst : BOOLEAN ; (* Is variable read/only? *) | |
40b91158 GM |
534 | ArrayRef : BOOLEAN ; (* Is variable used to point *) |
535 | (* to an array? *) | |
b80e3c46 | 536 | Heap : BOOLEAN ; (* Is var on the heap? *) |
b0762d4c | 537 | InitState : LRInitDesc ; (* Initialization state. *) |
1eee94d3 GM |
538 | At : Where ; (* Where was sym declared/used *) |
539 | ReadUsageList, (* list of var read quads *) | |
540 | WriteUsageList: LRLists ; (* list of var write quads *) | |
541 | END ; | |
542 | ||
543 | SymType = RECORD | |
544 | name : Name ; (* Index into name array, name *) | |
545 | (* of type. *) | |
546 | Type : CARDINAL ; (* Index to a type symbol. *) | |
547 | IsHidden : BOOLEAN ; (* Was it declared as hidden? *) | |
548 | ConstLitTree: SymbolTree ; (* constants of this type. *) | |
549 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
550 | packedInfo : PackedInfo ; (* the equivalent packed type *) | |
551 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
552 | Align : CARDINAL ; (* The alignment of this type *) | |
553 | Scope : CARDINAL ; (* Scope of declaration. *) | |
554 | At : Where ; (* Where was sym declared/used *) | |
555 | END ; | |
556 | ||
557 | SymPointer | |
558 | = RECORD | |
559 | name : Name ; (* Index into name array, name *) | |
560 | (* of pointer. *) | |
561 | Type : CARDINAL ; (* Index to a type symbol. *) | |
562 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
563 | Align : CARDINAL ; (* The alignment of this type *) | |
564 | ConstLitTree: SymbolTree ; (* constants of this type. *) | |
565 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
566 | Scope : CARDINAL ; (* Scope of declaration. *) | |
567 | At : Where ; (* Where was sym declared/used *) | |
568 | END ; | |
569 | ||
570 | SymRecordField = | |
571 | RECORD | |
572 | name : Name ; (* Index into name array, name *) | |
573 | (* of record field. *) | |
574 | Type : CARDINAL ; (* Index to a type symbol. *) | |
575 | Tag : BOOLEAN ; (* is the record field really *) | |
576 | (* a varient tag? *) | |
577 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
578 | Offset : PtrToValue ; (* Offset at runtime of symbol *) | |
579 | Parent : CARDINAL ; (* Index into symbol table to *) | |
580 | (* determine the parent symbol *) | |
581 | (* for this record field. Used *) | |
582 | (* for BackPatching. *) | |
583 | Varient : CARDINAL ; (* Index into symbol table to *) | |
584 | (* determine the associated *) | |
585 | (* varient symbol. *) | |
586 | Align : CARDINAL ; (* The alignment of this type *) | |
587 | Used : BOOLEAN ; (* pragma usused unsets this. *) | |
588 | DeclPacked: BOOLEAN ; (* Is this declared packed? *) | |
589 | DeclResolved: BOOLEAN ; (* has we resolved packed? *) | |
590 | Scope : CARDINAL ; (* Scope of declaration. *) | |
591 | At : Where ; (* Where was sym declared/used *) | |
592 | END ; | |
593 | ||
594 | SymVarientField = | |
595 | RECORD | |
596 | name : Name ; (* Index into name array, name *) | |
597 | (* of varient field (internal) *) | |
598 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
599 | Offset : PtrToValue ; (* Offset at runtime of symbol *) | |
600 | Parent : CARDINAL ; (* Index into symbol table to *) | |
601 | (* determine the parent symbol *) | |
602 | (* for this record field. Used *) | |
603 | (* for BackPatching. *) | |
604 | Varient : CARDINAL ; (* Index into symbol table to *) | |
605 | (* determine the associated *) | |
606 | (* varient symbol. *) | |
607 | ListOfSons: List ; (* Contains a list of the *) | |
608 | (* RecordField symbols and *) | |
609 | (* SymVarients *) | |
610 | DeclPacked: BOOLEAN ; (* Is this varient field *) | |
611 | (* packed? *) | |
612 | DeclResolved: BOOLEAN ; (* is it resolved? *) | |
613 | Scope : CARDINAL ; (* Scope of declaration. *) | |
614 | At : Where ; (* Where was sym declared/used *) | |
615 | END ; | |
616 | ||
617 | SymEnumerationField = | |
618 | RECORD | |
619 | name : Name ; (* Index into name array, name *) | |
620 | (* of enumeration field. *) | |
621 | Value : PtrToValue ; (* Enumeration field value. *) | |
622 | Type : CARDINAL ; (* Index to the enumeration. *) | |
623 | Scope : CARDINAL ; (* Scope of declaration. *) | |
624 | At : Where ; (* Where was sym declared/used *) | |
625 | END ; | |
626 | ||
627 | SymSet = RECORD | |
628 | name : Name ; (* Index into name array, name *) | |
629 | (* of set. *) | |
630 | Type : CARDINAL ; (* Index to a type symbol. *) | |
631 | (* (subrange or enumeration). *) | |
632 | packedInfo: PackedInfo ; (* the equivalent packed type *) | |
633 | ispacked : BOOLEAN ; | |
634 | Size : PtrToValue ; (* Runtime size of symbol. *) | |
635 | oafamily : CARDINAL ; (* The oafamily for this sym *) | |
636 | Scope : CARDINAL ; (* Scope of declaration. *) | |
637 | At : Where ; (* Where was sym declared/used *) | |
638 | END ; | |
639 | ||
640 | SymDefImp = | |
641 | RECORD | |
642 | name : Name ; (* Index into name array, name *) | |
643 | (* of record field. *) | |
05652ac4 | 644 | libname : Name ; (* Library (dialect) with module *) |
1eee94d3 GM |
645 | ctors : ModuleCtor ; (* All the ctor functions. *) |
646 | DefListOfDep, | |
647 | ModListOfDep : List ; (* Vector of SymDependency. *) | |
648 | ExportQualifiedTree: SymbolTree ; | |
649 | (* Holds all the export *) | |
650 | (* Qualified identifiers. *) | |
651 | (* This tree may be *) | |
652 | (* deleted at the end of Pass 1. *) | |
653 | ExportUnQualifiedTree: SymbolTree ; | |
654 | (* Holds all the export *) | |
655 | (* UnQualified identifiers. *) | |
656 | (* This tree may be *) | |
657 | (* deleted at the end of Pass 1. *) | |
658 | ExportRequest : SymbolTree ; (* Contains all identifiers that *) | |
659 | (* have been requested by other *) | |
660 | (* modules before this module *) | |
661 | (* declared its export list. *) | |
662 | (* This tree should be empty at *) | |
663 | (* the end of the compilation. *) | |
664 | (* Each time a symbol is *) | |
665 | (* exported it is removed from *) | |
666 | (* this list. *) | |
667 | IncludeList : List ; (* Contains all included symbols *) | |
668 | (* which are included by *) | |
669 | (* IMPORT modulename ; *) | |
670 | (* modulename.Symbol *) | |
671 | DefIncludeList: List ; (* Contains all included symbols *) | |
672 | (* which are included by *) | |
673 | (* IMPORT modulename ; *) | |
674 | (* in the definition module only *) | |
675 | ImportTree : SymbolTree ; (* Contains all IMPORTed *) | |
676 | (* identifiers. *) | |
677 | ExportUndeclared: SymbolTree ; | |
678 | (* ExportUndeclared contains all *) | |
679 | (* the identifiers which were *) | |
680 | (* exported but have not yet *) | |
681 | (* been declared. *) | |
682 | NeedToBeImplemented: SymbolTree ; | |
683 | (* NeedToBeImplemented contains *) | |
684 | (* the identifiers which have *) | |
685 | (* been exported and declared *) | |
686 | (* but have not yet been *) | |
687 | (* implemented. *) | |
688 | LocalSymbols : SymbolTree ; (* The LocalSymbols hold all the *) | |
689 | (* variables declared local to *) | |
690 | (* the block. It contains the *) | |
691 | (* IMPORT r ; *) | |
692 | (* FROM _ IMPORT x, y, x ; *) | |
693 | (* and also *) | |
694 | (* MODULE WeAreHere ; *) | |
695 | (* x y z visible by localsym *) | |
696 | (* MODULE Inner ; *) | |
697 | (* EXPORT x, y, z ; *) | |
698 | (* END Inner ; *) | |
699 | (* END WeAreHere. *) | |
700 | EnumerationScopeList: List ; (* Enumeration scope list which *) | |
701 | (* contains a list of all *) | |
702 | (* enumerations which are *) | |
703 | (* visible within this scope. *) | |
704 | NamedObjects : SymbolTree ; (* Names of all items declared. *) | |
705 | NamedImports : SymbolTree ; (* Names of items imported. *) | |
706 | WhereImported : SymbolTree ; (* Sym to TokenNo where import *) | |
707 | (* occurs. Error message use. *) | |
708 | Priority : CARDINAL ; (* Priority of the module. This *) | |
709 | (* is an index to a constant. *) | |
710 | Unresolved : SymbolTree ; (* All symbols currently *) | |
711 | (* unresolved in this module. *) | |
712 | StartQuad : CARDINAL ; (* Signify the initialization *) | |
713 | (* code. *) | |
714 | EndQuad : CARDINAL ; (* EndQuad should point to a *) | |
715 | (* goto quad. *) | |
716 | StartFinishQuad: CARDINAL ; (* Signify the finalization *) | |
717 | (* code. *) | |
718 | EndFinishQuad : CARDINAL ; (* should point to a finish *) | |
719 | FinallyFunction: Tree ; (* The GCC function for finally *) | |
720 | ExceptionFinally, | |
721 | ExceptionBlock: BOOLEAN ; (* does it have an exception? *) | |
722 | ContainsHiddenType: BOOLEAN ;(* True if this module *) | |
723 | (* implements a hidden type. *) | |
724 | ContainsBuiltin: BOOLEAN ; (* Does the module define a *) | |
725 | (* builtin procedure? *) | |
726 | ForC : BOOLEAN ; (* Is it a definition for "C" *) | |
727 | NeedExportList: BOOLEAN ; (* Must user supply export list? *) | |
728 | ModLink, (* Is the Def/Mod module parsed *) | |
729 | DefLink : BOOLEAN ; (* for linkage only? *) | |
730 | Builtin : BOOLEAN ; (* Is the module builtin? *) | |
731 | ListOfVars : List ; (* List of variables in this *) | |
732 | (* scope. *) | |
733 | ListOfProcs : List ; (* List of all procedures *) | |
734 | (* declared within this module. *) | |
735 | ListOfModules : List ; (* List of all inner modules. *) | |
736 | errorScope : ErrorScope ; (* The title scope. *) | |
737 | At : Where ; (* Where was sym declared/used *) | |
738 | END ; | |
739 | ||
740 | SymModule = | |
741 | RECORD | |
742 | name : Name ; (* Index into name array, name *) | |
743 | (* of record field. *) | |
05652ac4 | 744 | libname : Name ; (* Library (dialect) with module *) |
1eee94d3 GM |
745 | ctors : ModuleCtor ; (* All the ctor functions. *) |
746 | ModListOfDep : List ; (* Vector of SymDependency. *) | |
747 | LocalSymbols : SymbolTree ; (* The LocalSymbols hold all the *) | |
748 | (* variables declared local to *) | |
749 | (* the block. It contains the *) | |
750 | (* IMPORT r ; *) | |
751 | (* FROM _ IMPORT x, y, x ; *) | |
752 | (* and also *) | |
753 | (* MODULE WeAreHere ; *) | |
754 | (* x y z visible by localsym *) | |
755 | (* MODULE Inner ; *) | |
756 | (* EXPORT x, y, z ; *) | |
757 | (* END Inner ; *) | |
758 | (* END WeAreHere. *) | |
759 | ExportTree : SymbolTree ; (* Holds all the exported *) | |
760 | (* identifiers. *) | |
761 | (* This tree may be *) | |
762 | (* deleted at the end of Pass 1. *) | |
763 | IncludeList : List ; (* Contains all included symbols *) | |
764 | (* which are included by *) | |
765 | (* IMPORT modulename ; *) | |
766 | (* modulename.Symbol *) | |
767 | ImportTree : SymbolTree ; (* Contains all IMPORTed *) | |
768 | (* identifiers. *) | |
769 | ExportUndeclared: SymbolTree ; | |
770 | (* ExportUndeclared contains all *) | |
771 | (* the identifiers which were *) | |
772 | (* exported but have not yet *) | |
773 | (* been declared. *) | |
774 | EnumerationScopeList: List ; (* Enumeration scope list which *) | |
775 | (* contains a list of all *) | |
776 | (* enumerations which are *) | |
777 | (* visable within this scope. *) | |
778 | NamedObjects : SymbolTree ; (* Names of all items declared. *) | |
779 | NamedImports : SymbolTree ; (* Names of items imported. *) | |
780 | WhereImported : SymbolTree ; (* Sym to TokenNo where import *) | |
781 | (* occurs. Error message use. *) | |
782 | Scope : CARDINAL ; (* Scope of declaration. *) | |
783 | Priority : CARDINAL ; (* Priority of the module. This *) | |
784 | (* is an index to a constant. *) | |
785 | Unresolved : SymbolTree ; (* All symbols currently *) | |
786 | (* unresolved in this module. *) | |
787 | StartQuad : CARDINAL ; (* Signify the initialization *) | |
788 | (* code. *) | |
789 | EndQuad : CARDINAL ; (* EndQuad should point to a *) | |
790 | (* goto quad. *) | |
791 | StartFinishQuad: CARDINAL ; (* Signify the finalization *) | |
792 | (* code. *) | |
793 | EndFinishQuad : CARDINAL ; (* should point to a finish *) | |
794 | FinallyFunction: Tree ; (* The GCC function for finally *) | |
795 | ExceptionFinally, | |
796 | ExceptionBlock: BOOLEAN ; (* does it have an exception? *) | |
797 | ModLink : BOOLEAN ; (* Is the module parsed for *) | |
798 | (* linkage only? *) | |
799 | Builtin : BOOLEAN ; (* Is the module builtin? *) | |
800 | ListOfVars : List ; (* List of variables in this *) | |
801 | (* scope. *) | |
802 | ListOfProcs : List ; (* List of all procedures *) | |
803 | (* declared within this module. *) | |
804 | ListOfModules : List ; (* List of all inner modules. *) | |
805 | errorScope : ErrorScope ; (* The title scope. *) | |
806 | At : Where ; (* Where was sym declared/used *) | |
807 | END ; | |
808 | ||
809 | SymDummy = | |
810 | RECORD | |
811 | NextFree : CARDINAL ; (* Link to the next free symbol. *) | |
812 | END ; | |
813 | ||
814 | ||
815 | Symbol = RECORD | |
816 | CASE SymbolType : TypeOfSymbol OF | |
817 | (* Determines the type of symbol *) | |
818 | ||
819 | OAFamilySym : OAFamily : SymOAFamily | | |
820 | ObjectSym : Object : SymObject | | |
821 | EquivSym : Equiv : SymEquiv | | |
822 | RecordSym : Record : SymRecord | | |
823 | VarientSym : Varient : SymVarient | | |
824 | VarSym : Var : SymVar | | |
825 | EnumerationSym : Enumeration : SymEnumeration | | |
826 | SubrangeSym : Subrange : SymSubrange | | |
827 | SubscriptSym : Subscript : SymSubscript | | |
828 | ArraySym : Array : SymArray | | |
829 | UnboundedSym : Unbounded : SymUnbounded | | |
830 | PartialUnboundedSym : PartialUnbounded : SymPartialUnbounded | | |
831 | ConstVarSym : ConstVar : SymConstVar | | |
832 | ConstLitSym : ConstLit : SymConstLit | | |
833 | ConstStringSym : ConstString : SymConstString | | |
834 | VarParamSym : VarParam : SymVarParam | | |
835 | ParamSym : Param : SymParam | | |
836 | ErrorSym : Error : SymError | | |
837 | UndefinedSym : Undefined : SymUndefined | | |
838 | TypeSym : Type : SymType | | |
839 | PointerSym : Pointer : SymPointer | | |
840 | RecordFieldSym : RecordField : SymRecordField | | |
841 | VarientFieldSym : VarientField : SymVarientField | | |
842 | EnumerationFieldSym : EnumerationField : SymEnumerationField | | |
843 | DefImpSym : DefImp : SymDefImp | | |
844 | ModuleSym : Module : SymModule | | |
845 | SetSym : Set : SymSet | | |
846 | ProcedureSym : Procedure : SymProcedure | | |
847 | ProcTypeSym : ProcType : SymProcType | | |
68201409 | 848 | ImportStatementSym : ImportStatement : SymImportStatement | |
1eee94d3 GM |
849 | ImportSym : Import : SymImport | |
850 | GnuAsmSym : GnuAsm : SymGnuAsm | | |
851 | InterfaceSym : Interface : SymInterface | | |
852 | TupleSym : Tuple : SymTuple | | |
853 | DummySym : Dummy : SymDummy | |
854 | ||
855 | END | |
856 | END ; | |
857 | ||
858 | CallFrame = RECORD | |
d5e2694e GM |
859 | Main : CARDINAL ; (* Main scope for insertions *) |
860 | Search: CARDINAL ; (* Search scope for symbol searches *) | |
861 | Start : CARDINAL ; (* ScopePtr value before StartScope *) | |
862 | (* was called. *) | |
1eee94d3 GM |
863 | END ; |
864 | ||
865 | PtrToSymbol = POINTER TO Symbol ; | |
866 | PtrToCallFrame = POINTER TO CallFrame ; | |
867 | ||
868 | CheckProcedure = PROCEDURE (CARDINAL) ; | |
869 | ||
870 | VAR | |
d5e2694e GM |
871 | Symbols : Indexing.Index ; (* ARRAY [1..MaxSymbols] OF Symbol. *) |
872 | ScopeCallFrame: Indexing.Index ; (* ARRAY [1..MaxScopes] OF CallFrame. *) | |
873 | FreeSymbol : CARDINAL ; (* The next free symbol indice. *) | |
1eee94d3 | 874 | DefModuleTree : SymbolTree ; |
d5e2694e | 875 | ModuleTree : SymbolTree ; (* Tree of all modules ever used. *) |
1eee94d3 | 876 | ConstLitStringTree |
d5e2694e GM |
877 | : SymbolTree ; (* String Literal Constants only need *) |
878 | (* to be declared once. *) | |
879 | CurrentModule : CARDINAL ; (* Index into symbols determining the *) | |
880 | (* current module being compiled. *) | |
881 | (* This maybe an inner module. *) | |
882 | MainModule : CARDINAL ; (* Index into symbols determining the *) | |
883 | (* module the user requested to *) | |
884 | (* compile. *) | |
885 | FileModule : CARDINAL ; (* Index into symbols determining *) | |
886 | (* which module (file) is being *) | |
887 | (* compiled. (Maybe an import def) *) | |
888 | ScopePtr : CARDINAL ; (* An index to the ScopeCallFrame. *) | |
889 | (* ScopePtr determines the top of the *) | |
890 | (* ScopeCallFrame. *) | |
891 | BaseScopePtr : CARDINAL ; (* An index to the ScopeCallFrame of *) | |
892 | (* the top of BaseModule. BaseModule *) | |
893 | (* is always left at the bottom of *) | |
894 | (* stack since it is used so *) | |
895 | (* frequently. When the BaseModule *) | |
896 | (* needs to be searched the ScopePtr *) | |
897 | (* is temporarily altered to *) | |
898 | (* BaseScopePtr and GetScopeSym is *) | |
899 | (* called. *) | |
900 | BaseModule : CARDINAL ; (* Index to the symbol table of the *) | |
901 | (* Base pseudo modeule declaration. *) | |
902 | TemporaryNo : CARDINAL ; (* The next temporary number. *) | |
903 | CurrentError : Error ; (* Current error chain. *) | |
904 | AddressTypes : List ; (* A list of type symbols which must *) | |
905 | (* be declared as ADDRESS or pointer *) | |
906 | UnresolvedConstructorType: List ; (* all constructors whose type *) | |
907 | (* is not yet known. *) | |
908 | AnonymousName : CARDINAL ; (* anonymous type name unique id *) | |
909 | ReportedUnknowns : Set ; (* set of symbols already reported as *) | |
910 | (* unknowns to the user. *) | |
911 | ConstLitPoolTree : SymbolTree ; (* Pool of constants to ensure *) | |
912 | (* constants are reused between *) | |
913 | (* passes and reduce duplicate *) | |
914 | (* errors. *) | |
915 | ConstLitArray : Indexing.Index ; | |
1eee94d3 GM |
916 | |
917 | ||
918 | (* | |
919 | CheckAnonymous - checks to see whether the name is NulName and if so | |
920 | it creates a unique anonymous name. | |
921 | *) | |
922 | ||
923 | PROCEDURE CheckAnonymous (name: Name) : Name ; | |
924 | BEGIN | |
925 | IF name=NulName | |
926 | THEN | |
927 | INC(AnonymousName) ; | |
928 | name := makekey(string(Mark(Sprintf1(Mark(InitString('$$%d')), AnonymousName)))) | |
929 | END ; | |
930 | RETURN( name ) | |
931 | END CheckAnonymous ; | |
932 | ||
933 | ||
934 | (* | |
935 | IsNameAnonymous - returns TRUE if the symbol, sym, has an anonymous name | |
936 | or no name. | |
937 | *) | |
938 | ||
939 | PROCEDURE IsNameAnonymous (sym: CARDINAL) : BOOLEAN ; | |
940 | VAR | |
941 | a: ARRAY [0..1] OF CHAR ; | |
942 | n: Name ; | |
943 | BEGIN | |
944 | n := GetSymName(sym) ; | |
945 | IF n=NulName | |
946 | THEN | |
947 | RETURN( TRUE ) | |
948 | ELSE | |
949 | GetKey(n, a) ; | |
950 | RETURN( StrEqual(a, '$$') ) | |
951 | END | |
952 | END IsNameAnonymous ; | |
953 | ||
954 | ||
955 | (* | |
956 | InitWhereDeclared - sets the Declared and FirstUsed fields of record, at. | |
957 | *) | |
958 | ||
959 | PROCEDURE InitWhereDeclaredTok (tok: CARDINAL; VAR at: Where) ; | |
960 | BEGIN | |
961 | WITH at DO | |
962 | IF CompilingDefinitionModule () | |
963 | THEN | |
964 | DefDeclared := tok ; | |
965 | ModDeclared := UnknownTokenNo | |
966 | ELSE | |
967 | DefDeclared := UnknownTokenNo ; | |
968 | ModDeclared := tok | |
969 | END ; | |
970 | FirstUsed := tok (* we assign this field to something legal *) | |
971 | END | |
972 | END InitWhereDeclaredTok ; | |
973 | ||
974 | ||
975 | (* | |
976 | InitWhereDeclared - sets the Declared and FirstUsed fields of record, at. | |
977 | *) | |
978 | ||
979 | PROCEDURE InitWhereDeclared (VAR at: Where) ; | |
980 | BEGIN | |
981 | InitWhereDeclaredTok (GetTokenNo (), at) | |
982 | END InitWhereDeclared ; | |
983 | ||
984 | ||
985 | (* | |
986 | InitWhereFirstUsed - sets the FirstUsed field of record, at. | |
987 | *) | |
988 | ||
989 | PROCEDURE InitWhereFirstUsed (VAR at: Where) ; | |
990 | BEGIN | |
991 | InitWhereFirstUsedTok (GetTokenNo (), at) | |
992 | END InitWhereFirstUsed ; | |
993 | ||
994 | ||
995 | (* | |
996 | InitWhereFirstUsedTok - sets the FirstUsed field of record, at. | |
997 | *) | |
998 | ||
999 | PROCEDURE InitWhereFirstUsedTok (tok: CARDINAL; VAR at: Where) ; | |
1000 | BEGIN | |
1001 | WITH at DO | |
1002 | FirstUsed := tok | |
1003 | END | |
1004 | END InitWhereFirstUsedTok ; | |
1005 | ||
1006 | ||
1007 | (* | |
1008 | FinalSymbol - returns the highest number symbol used. | |
1009 | *) | |
1010 | ||
1011 | PROCEDURE FinalSymbol () : CARDINAL ; | |
1012 | BEGIN | |
1013 | RETURN( FreeSymbol-1 ) | |
1014 | END FinalSymbol ; | |
1015 | ||
1016 | ||
1017 | (* | |
1018 | NewSym - Sets Sym to a new symbol index. | |
1019 | *) | |
1020 | ||
1021 | PROCEDURE NewSym (VAR sym: CARDINAL) ; | |
1022 | VAR | |
1023 | pSym: PtrToSymbol ; | |
1024 | BEGIN | |
1025 | sym := FreeSymbol ; | |
1026 | NEW(pSym) ; | |
1027 | WITH pSym^ DO | |
1028 | SymbolType := DummySym | |
1029 | END ; | |
1030 | PutIndice(Symbols, sym, pSym) ; | |
1031 | INC(FreeSymbol) | |
1032 | END NewSym ; | |
1033 | ||
1034 | ||
1035 | (* | |
1036 | GetPsym - returns the pointer to, sym. | |
1037 | *) | |
1038 | ||
1039 | PROCEDURE GetPsym (sym: CARDINAL) : PtrToSymbol ; | |
1040 | VAR | |
1041 | pSym: PtrToSymbol ; | |
1042 | BEGIN | |
1043 | IF InBounds(Symbols, sym) | |
1044 | THEN | |
1045 | pSym := GetIndice(Symbols, sym) ; | |
1046 | RETURN( pSym ) | |
1047 | ELSE | |
1048 | InternalError ('symbol out of bounds') | |
1049 | END | |
1050 | END GetPsym ; | |
1051 | ||
1052 | ||
1053 | (* | |
1054 | GetPcall - returns the pointer to the CallFrame. | |
1055 | *) | |
1056 | ||
1057 | PROCEDURE GetPcall (call: CARDINAL) : PtrToCallFrame ; | |
1058 | VAR | |
1059 | pCall: PtrToCallFrame ; | |
1060 | BEGIN | |
1061 | IF InBounds(ScopeCallFrame, call) | |
1062 | THEN | |
1063 | pCall := GetIndice(ScopeCallFrame, call) ; | |
1064 | RETURN( pCall ) | |
1065 | ELSE | |
1066 | InternalError ('symbol out of bounds') | |
1067 | END | |
1068 | END GetPcall ; | |
1069 | ||
1070 | ||
1071 | (* | |
1072 | MakeImport - create and return an import symbol. | |
1073 | moduleSym is the symbol being imported. | |
1074 | isqualified is FALSE if it were IMPORT modulename and | |
1075 | TRUE for the qualified FROM modulename IMPORT etc. | |
1076 | listno is the import list count for this module. | |
1077 | tok should match this modulename position. | |
1078 | *) | |
1079 | ||
1080 | PROCEDURE MakeImport (tok: CARDINAL; | |
1081 | moduleSym: CARDINAL; | |
1082 | listno: CARDINAL; | |
1083 | isqualified: BOOLEAN) : CARDINAL ; | |
1084 | VAR | |
1085 | importSym: CARDINAL ; | |
1086 | pSym : PtrToSymbol ; | |
1087 | BEGIN | |
1088 | NewSym (importSym) ; | |
1089 | pSym := GetPsym (importSym) ; | |
1090 | WITH pSym^ DO | |
1091 | SymbolType := ImportSym ; | |
1092 | WITH Import DO | |
1093 | module := moduleSym ; | |
1094 | listNo := listno ; | |
1095 | qualified := isqualified ; | |
1096 | InitWhereDeclaredTok (tok, at) | |
1097 | END | |
1098 | END ; | |
1099 | RETURN importSym | |
1100 | END MakeImport ; | |
1101 | ||
1102 | ||
1103 | (* | |
1104 | MakeImportStatement - return a dependent symbol which represents an import statement | |
1105 | or a qualified import statement. The tok should either match | |
1106 | the FROM token or the IMPORT token. listno is the import list | |
1107 | count for the module. | |
1108 | *) | |
1109 | ||
1110 | PROCEDURE MakeImportStatement (tok: CARDINAL; listno: CARDINAL) : CARDINAL ; | |
1111 | VAR | |
1112 | dependentSym: CARDINAL ; | |
1113 | pSym : PtrToSymbol ; | |
1114 | BEGIN | |
1115 | NewSym (dependentSym) ; | |
1116 | pSym := GetPsym (dependentSym) ; | |
1117 | WITH pSym^ DO | |
1118 | SymbolType := ImportStatementSym ; | |
1119 | WITH ImportStatement DO | |
1120 | listNo := listno ; | |
1121 | InitList (ListOfImports) ; | |
1122 | InitWhereDeclaredTok (tok, at) | |
1123 | END | |
1124 | END ; | |
1125 | RETURN dependentSym | |
1126 | END MakeImportStatement ; | |
1127 | ||
1128 | ||
1129 | (* | |
1130 | AppendModuleImportStatement - appends the ImportStatement symbol onto the | |
1131 | module import list. | |
1132 | ||
1133 | For example: | |
1134 | ||
1135 | FROM x IMPORT y, z ; | |
1136 | ^^^^ | |
1137 | ||
1138 | also: | |
1139 | ||
1140 | IMPORT p, q, r; | |
1141 | ^^^^^^ | |
1142 | will result in a new ImportStatement symbol added | |
1143 | to the current module import list. | |
1144 | The statement symbol is expected to be created | |
1145 | by MakeImportStatement using the token positions | |
1146 | outlined above. | |
1147 | *) | |
1148 | ||
1149 | PROCEDURE AppendModuleImportStatement (module, statement: CARDINAL) ; | |
1150 | VAR | |
1151 | pSym: PtrToSymbol ; | |
1152 | BEGIN | |
1153 | IF IsDefImp (module) | |
1154 | THEN | |
1155 | pSym := GetPsym (module) ; | |
1156 | IF CompilingDefinitionModule () | |
1157 | THEN | |
1158 | IncludeItemIntoList (pSym^.DefImp.DefListOfDep, statement) | |
1159 | ELSE | |
1160 | IncludeItemIntoList (pSym^.DefImp.ModListOfDep, statement) | |
1161 | END | |
1162 | ELSIF IsModule (module) | |
1163 | THEN | |
1164 | pSym := GetPsym (module) ; | |
1165 | IncludeItemIntoList (pSym^.Module.ModListOfDep, statement) | |
1166 | ELSE | |
1167 | InternalError ('expecting DefImp or Module symbol') | |
1168 | END | |
1169 | END AppendModuleImportStatement ; | |
1170 | ||
1171 | ||
1172 | (* | |
1173 | AppendModuleOnImportStatement - appends the import symbol onto the | |
1174 | dependent list (chain). | |
1175 | ||
1176 | For example each: | |
1177 | ||
1178 | FROM x IMPORT y, z ; | |
1179 | ^ | |
1180 | x are added to the dependent list. | |
1181 | ||
1182 | also: | |
1183 | ||
1184 | IMPORT p, q, r; | |
1185 | ^ ^ ^ | |
1186 | will result in p, q and r added to | |
1187 | to the dependent list. | |
1188 | ||
1189 | The import symbol is created by MakeImport | |
1190 | and the token is expected to match the module | |
1191 | name position outlined above. | |
1192 | *) | |
1193 | ||
1194 | PROCEDURE AppendModuleOnImportStatement (module, import: CARDINAL) ; | |
1195 | VAR | |
1196 | l : List ; | |
1197 | lastImportStatement: CARDINAL ; | |
1198 | BEGIN | |
1199 | Assert (IsImport (import)) ; | |
1200 | IF CompilingDefinitionModule () | |
1201 | THEN | |
1202 | l := GetModuleDefImportStatementList (module) | |
1203 | ELSE | |
1204 | l := GetModuleModImportStatementList (module) | |
1205 | END ; | |
1206 | Assert (l # NIL) ; | |
1207 | Assert (NoOfItemsInList (l) > 0) ; (* There should always be one on the list. *) | |
1208 | lastImportStatement := GetItemFromList (l, NoOfItemsInList (l)) ; | |
1209 | Assert (IsImportStatement (lastImportStatement)) ; | |
1210 | l := GetImportStatementList (lastImportStatement) ; | |
1211 | IncludeItemIntoList (l, import) | |
1212 | END AppendModuleOnImportStatement ; | |
1213 | ||
1214 | ||
1215 | (* | |
1216 | IsImport - returns TRUE if sym is an import symbol. | |
1217 | *) | |
1218 | ||
1219 | PROCEDURE IsImport (sym: CARDINAL) : BOOLEAN ; | |
1220 | VAR | |
1221 | pSym: PtrToSymbol ; | |
1222 | BEGIN | |
1223 | pSym := GetPsym (sym) ; | |
1224 | RETURN pSym^.SymbolType=ImportSym | |
1225 | END IsImport ; | |
1226 | ||
1227 | ||
1228 | (* | |
1229 | IsImportStatement - returns TRUE if sym is a dependent symbol. | |
1230 | *) | |
1231 | ||
1232 | PROCEDURE IsImportStatement (sym: CARDINAL) : BOOLEAN ; | |
1233 | VAR | |
1234 | pSym: PtrToSymbol ; | |
1235 | BEGIN | |
1236 | pSym := GetPsym (sym) ; | |
1237 | RETURN pSym^.SymbolType=ImportStatementSym | |
1238 | END IsImportStatement ; | |
1239 | ||
1240 | ||
1241 | (* | |
1242 | GetImportModule - returns the module associated with the import symbol. | |
1243 | *) | |
1244 | ||
1245 | PROCEDURE GetImportModule (sym: CARDINAL) : CARDINAL ; | |
1246 | VAR | |
1247 | pSym: PtrToSymbol ; | |
1248 | BEGIN | |
1249 | Assert (IsImport (sym)) ; | |
1250 | pSym := GetPsym (sym) ; | |
1251 | RETURN pSym^.Import.module | |
1252 | END GetImportModule ; | |
1253 | ||
1254 | ||
1255 | (* | |
1256 | GetImportDeclared - returns the token associated with the import symbol. | |
1257 | *) | |
1258 | ||
1259 | PROCEDURE GetImportDeclared (sym: CARDINAL) : CARDINAL ; | |
1260 | VAR | |
1261 | tok : CARDINAL ; | |
1262 | BEGIN | |
1263 | Assert (IsImport (sym)) ; | |
1264 | tok := GetDeclaredDefinition (sym) ; | |
1265 | IF tok = UnknownTokenNo | |
1266 | THEN | |
1267 | RETURN GetDeclaredModule (sym) | |
1268 | END ; | |
1269 | RETURN tok | |
1270 | END GetImportDeclared ; | |
1271 | ||
1272 | ||
1273 | (* | |
1274 | GetImportStatementList - returns the list of imports for this dependent. | |
1275 | Each import symbol corresponds to a module. | |
1276 | *) | |
1277 | ||
1278 | PROCEDURE GetImportStatementList (sym: CARDINAL) : List ; | |
1279 | VAR | |
1280 | pSym: PtrToSymbol ; | |
1281 | BEGIN | |
1282 | Assert (IsImportStatement (sym)) ; | |
1283 | pSym := GetPsym (sym) ; | |
1284 | RETURN pSym^.ImportStatement.ListOfImports | |
1285 | END GetImportStatementList ; | |
1286 | ||
1287 | ||
1288 | (* | |
1289 | GetModuleDefImportStatementList - returns the list of dependents associated with | |
1290 | the definition module. | |
1291 | *) | |
1292 | ||
1293 | PROCEDURE GetModuleDefImportStatementList (sym: CARDINAL) : List ; | |
1294 | VAR | |
1295 | pSym: PtrToSymbol ; | |
1296 | BEGIN | |
1297 | Assert (IsModule (sym) OR IsDefImp (sym)) ; | |
1298 | IF IsDefImp (sym) | |
1299 | THEN | |
1300 | pSym := GetPsym (sym) ; | |
1301 | RETURN pSym^.DefImp.DefListOfDep | |
1302 | END ; | |
1303 | RETURN NIL | |
1304 | END GetModuleDefImportStatementList ; | |
1305 | ||
1306 | ||
1307 | (* | |
1308 | GetModuleModImportStatementList - returns the list of dependents associated with | |
1309 | the implementation or program module. | |
1310 | *) | |
1311 | ||
1312 | PROCEDURE GetModuleModImportStatementList (sym: CARDINAL) : List ; | |
1313 | VAR | |
1314 | pSym: PtrToSymbol ; | |
1315 | BEGIN | |
1316 | Assert (IsModule (sym) OR IsDefImp (sym)) ; | |
1317 | pSym := GetPsym (sym) ; | |
1318 | IF IsDefImp (sym) | |
1319 | THEN | |
1320 | RETURN pSym^.DefImp.ModListOfDep | |
1321 | ELSE | |
1322 | RETURN pSym^.Module.ModListOfDep | |
1323 | END | |
1324 | END GetModuleModImportStatementList ; | |
1325 | ||
1326 | ||
1327 | (* | |
1328 | DebugProcedureLineNumber - | |
1329 | *) | |
1330 | ||
1331 | PROCEDURE DebugProcedureLineNumber (sym: CARDINAL) ; | |
1332 | VAR | |
1333 | begin, end: CARDINAL ; | |
1334 | n : Name ; | |
1335 | f : String ; | |
1336 | l : CARDINAL ; | |
1337 | BEGIN | |
1338 | GetProcedureBeginEnd (sym, begin, end) ; | |
1339 | n := GetSymName(sym) ; | |
1340 | IF begin#0 | |
1341 | THEN | |
1342 | f := FindFileNameFromToken (begin, 0) ; | |
1343 | l := TokenToLineNo(begin, 0) ; | |
1344 | printf3 ('%s:%d:%a:begin\n', f, l, n) | |
1345 | END ; | |
1346 | IF end#0 | |
1347 | THEN | |
1348 | f := FindFileNameFromToken (end, 0) ; | |
1349 | l := TokenToLineNo(end, 0) ; | |
1350 | printf3 ('%s:%d:%a:end\n', f, l, n) | |
1351 | END | |
1352 | END DebugProcedureLineNumber ; | |
1353 | ||
1354 | ||
1355 | (* | |
1356 | DebugLineNumbers - internal debugging, emit all procedure names in this module | |
1357 | together with the line numbers for the corresponding begin/end | |
1358 | tokens. | |
1359 | *) | |
1360 | ||
1361 | PROCEDURE DebugLineNumbers (sym: CARDINAL) ; | |
1362 | BEGIN | |
1363 | IF DebugFunctionLineNumbers | |
1364 | THEN | |
1365 | printf0 ('<lines>\n') ; | |
1366 | ForeachProcedureDo(sym, DebugProcedureLineNumber) ; | |
1367 | printf0 ('</lines>\n') | |
1368 | END | |
1369 | END DebugLineNumbers ; | |
1370 | ||
1371 | ||
1372 | (* | |
1373 | IsPartialUnbounded - returns TRUE if, sym, is a partially unbounded symbol. | |
1374 | *) | |
1375 | ||
1376 | PROCEDURE IsPartialUnbounded (sym: CARDINAL) : BOOLEAN ; | |
1377 | VAR | |
1378 | pSym: PtrToSymbol ; | |
1379 | BEGIN | |
1380 | IF sym>0 | |
1381 | THEN | |
1382 | pSym := GetPsym(sym) ; | |
1383 | WITH pSym^ DO | |
1384 | CASE SymbolType OF | |
1385 | ||
1386 | PartialUnboundedSym: RETURN( TRUE ) | |
1387 | ||
1388 | ELSE | |
1389 | RETURN( FALSE ) | |
1390 | END | |
1391 | END | |
1392 | ELSE | |
1393 | RETURN( FALSE ) | |
1394 | END | |
1395 | END IsPartialUnbounded ; | |
1396 | ||
1397 | ||
1398 | (* | |
1399 | PutPartialUnbounded - | |
1400 | *) | |
1401 | ||
1402 | PROCEDURE PutPartialUnbounded (sym: CARDINAL; type: CARDINAL; ndim: CARDINAL) ; | |
1403 | VAR | |
1404 | pSym: PtrToSymbol ; | |
1405 | BEGIN | |
1406 | pSym := GetPsym(sym) ; | |
1407 | IF IsDummy(sym) | |
1408 | THEN | |
1409 | pSym^.SymbolType := PartialUnboundedSym | |
1410 | END ; | |
1411 | WITH pSym^ DO | |
1412 | CASE SymbolType OF | |
1413 | ||
1414 | PartialUnboundedSym: PartialUnbounded.Type := type ; | |
1415 | PartialUnbounded.NDim := ndim | |
1416 | ||
1417 | ELSE | |
1418 | InternalError ('not expecting this type') | |
1419 | END | |
1420 | END | |
1421 | END PutPartialUnbounded ; | |
1422 | ||
1423 | ||
1424 | (* | |
1425 | AlreadyDeclaredError - generate an error message, a, and two areas of code showing | |
1426 | the places where the symbols were declared. | |
1427 | *) | |
1428 | ||
1429 | PROCEDURE AlreadyDeclaredError (s: String; name: Name; OtherOccurance: CARDINAL) ; | |
1430 | VAR | |
1431 | e: Error ; | |
1432 | BEGIN | |
1433 | IF (OtherOccurance=0) OR (OtherOccurance=GetTokenNo()) | |
1434 | THEN | |
1435 | e := NewError(GetTokenNo()) ; | |
1436 | ErrorString(e, s) | |
1437 | ELSE | |
1438 | e := NewError(GetTokenNo()) ; | |
1439 | ErrorString(e, s) ; | |
1440 | e := ChainError(OtherOccurance, e) ; | |
1441 | ErrorFormat1(e, 'and symbol (%a) is also declared here', name) | |
1442 | END | |
1443 | END AlreadyDeclaredError ; | |
1444 | ||
1445 | ||
1446 | (* | |
1447 | AlreadyImportedError - generate an error message, a, and two areas of code showing | |
1448 | the places where the symbols was imported and also declared. | |
1449 | *) | |
1450 | ||
1451 | (* | |
1452 | PROCEDURE AlreadyImportedError (s: String; name: Name; OtherOccurance: CARDINAL) ; | |
1453 | VAR | |
1454 | e: Error ; | |
1455 | BEGIN | |
1456 | IF (OtherOccurance=0) OR (OtherOccurance=GetTokenNo()) | |
1457 | THEN | |
1458 | e := NewError(GetTokenNo()) ; | |
1459 | ErrorString(e, s) | |
1460 | ELSE | |
1461 | e := NewError(GetTokenNo()) ; | |
1462 | ErrorString(e, s) ; | |
1463 | e := ChainError(OtherOccurance, e) ; | |
1464 | ErrorFormat1(e, 'and symbol (%a) was also seen here', name) | |
1465 | END | |
1466 | END AlreadyImportedError ; | |
1467 | *) | |
1468 | ||
1469 | ||
1470 | (* | |
1471 | MakeError - creates an error node, which can be used in MetaError messages. | |
1472 | It will be removed from ExportUndeclared and Unknown trees. | |
1473 | *) | |
1474 | ||
1475 | PROCEDURE MakeError (tok: CARDINAL; name: Name) : CARDINAL ; | |
1476 | VAR | |
1477 | pSym: PtrToSymbol ; | |
1478 | Sym : CARDINAL ; | |
1479 | BEGIN | |
1480 | (* if Sym is present on the unknown tree then remove it *) | |
1481 | Sym := FetchUnknownSym (name) ; | |
1482 | IF Sym=NulSym | |
1483 | THEN | |
1484 | NewSym(Sym) | |
1485 | ELSE | |
1486 | (* | |
1487 | remove symbol from this tree as we have already generated | |
1488 | a meaningful error message | |
1489 | *) | |
1490 | RemoveExportUndeclared(GetCurrentModuleScope(), Sym) | |
1491 | END ; | |
1492 | pSym := GetPsym(Sym) ; | |
1493 | WITH pSym^ DO | |
1494 | SymbolType := ErrorSym ; | |
1495 | Error.name := name ; | |
1496 | InitWhereDeclaredTok(tok, Error.At) ; | |
1497 | InitWhereFirstUsedTok(tok, Error.At) | |
1498 | END ; | |
1499 | RETURN( Sym ) | |
1500 | END MakeError ; | |
1501 | ||
1502 | ||
1503 | (* | |
1504 | MakeErrorS - creates an error node from a string, which can be used | |
1505 | in MetaError messages. | |
1506 | It will be removed from ExportUndeclared and Unknown trees. | |
1507 | *) | |
1508 | ||
1509 | PROCEDURE MakeErrorS (tok: CARDINAL; name: String) : CARDINAL ; | |
1510 | BEGIN | |
1511 | RETURN MakeError (tok, makekey (string (name))) | |
1512 | END MakeErrorS ; | |
1513 | ||
1514 | ||
1515 | (* | |
1516 | IsError - returns TRUE if the symbol is an error symbol. | |
1517 | *) | |
1518 | ||
1519 | PROCEDURE IsError (Sym: CARDINAL) : BOOLEAN ; | |
1520 | VAR | |
1521 | pSym: PtrToSymbol ; | |
1522 | BEGIN | |
1523 | CheckLegal(Sym) ; | |
1524 | pSym := GetPsym(Sym) ; | |
1525 | RETURN( pSym^.SymbolType=ErrorSym ) | |
1526 | END IsError ; | |
1527 | ||
1528 | ||
1529 | (* | |
1530 | MakeObject - creates an object node. | |
1531 | *) | |
1532 | ||
1533 | PROCEDURE MakeObject (name: Name) : CARDINAL ; | |
1534 | VAR | |
1535 | pSym: PtrToSymbol ; | |
1536 | Sym : CARDINAL ; | |
1537 | BEGIN | |
1538 | NewSym(Sym) ; | |
1539 | pSym := GetPsym(Sym) ; | |
1540 | WITH pSym^ DO | |
1541 | SymbolType := ObjectSym ; | |
1542 | Object.name := name ; | |
1543 | InitWhereDeclared(Object.At) ; | |
1544 | InitWhereFirstUsed(Object.At) | |
1545 | END ; | |
1546 | RETURN( Sym ) | |
1547 | END MakeObject ; | |
1548 | ||
1549 | ||
1550 | (* | |
1551 | IsTuple - returns TRUE if the symbol is a tuple symbol. | |
1552 | *) | |
1553 | ||
1554 | PROCEDURE IsTuple (Sym: CARDINAL) : BOOLEAN ; | |
1555 | VAR | |
1556 | pSym: PtrToSymbol ; | |
1557 | BEGIN | |
1558 | CheckLegal(Sym) ; | |
1559 | pSym := GetPsym(Sym) ; | |
1560 | RETURN( pSym^.SymbolType=TupleSym ) | |
1561 | END IsTuple ; | |
1562 | ||
1563 | ||
1564 | (* | |
1565 | IsObject - returns TRUE if the symbol is an object symbol. | |
1566 | *) | |
1567 | ||
1568 | PROCEDURE IsObject (Sym: CARDINAL) : BOOLEAN ; | |
1569 | VAR | |
1570 | pSym: PtrToSymbol ; | |
1571 | BEGIN | |
1572 | CheckLegal(Sym) ; | |
1573 | pSym := GetPsym(Sym) ; | |
1574 | RETURN( pSym^.SymbolType=ObjectSym ) | |
1575 | END IsObject ; | |
1576 | ||
1577 | ||
1578 | (* | |
1579 | DeclareSym - returns a symbol which was either in the unknown tree or | |
1580 | a New symbol, since name is about to be declared. | |
1581 | *) | |
1582 | ||
1583 | PROCEDURE DeclareSym (tok: CARDINAL; name: Name) : CARDINAL ; | |
1584 | VAR | |
1585 | Sym: CARDINAL ; | |
1586 | BEGIN | |
1587 | IF name = NulName | |
1588 | THEN | |
1589 | NewSym (Sym) | |
1590 | ELSIF IsAlreadyDeclaredSym (name) | |
1591 | THEN | |
1592 | Sym := GetSym (name) ; | |
1593 | IF IsImported (GetCurrentModuleScope (), Sym) | |
1594 | THEN | |
1595 | MetaErrorT1 (GetWhereImported(Sym), | |
1596 | 'symbol {%1Rad} is already present in this scope, check both definition and implementation modules, use a different name or remove the import', | |
1597 | Sym) ; | |
1598 | MetaErrorT1 (tok, 'symbol {%1Cad} also declared in this module', Sym) ; | |
1599 | IF Sym # GetVisibleSym (name) | |
1600 | THEN | |
1601 | MetaErrorT1 (tok, 'symbol {%1CMad} also declared in this module', GetVisibleSym (name)) | |
1602 | END | |
1603 | ELSE | |
1604 | MetaErrorT1 (tok, 'symbol {%1RMad} is already declared in this scope, use a different name or remove the declaration', Sym) ; | |
1605 | MetaErrorT1 (tok, 'symbol {%1Cad} also declared in this module', Sym) ; | |
1606 | IF Sym # GetVisibleSym(name) | |
1607 | THEN | |
1608 | MetaErrorT1(tok, 'symbol {%1CMad} also declared in this module', GetVisibleSym (name)) | |
1609 | END | |
1610 | END ; | |
1611 | Sym := MakeError (tok, name) | |
1612 | ELSE | |
1613 | Sym := FetchUnknownSym (name) ; | |
1614 | IF Sym=NulSym | |
1615 | THEN | |
1616 | NewSym (Sym) | |
1617 | END ; | |
1618 | CheckForExportedDeclaration (Sym) | |
1619 | END ; | |
1620 | RETURN Sym | |
1621 | END DeclareSym ; | |
1622 | ||
1623 | ||
1624 | (* | |
1625 | Init - Initializes the data structures and variables in this module. | |
1626 | Initialize the trees. | |
1627 | *) | |
1628 | ||
1629 | PROCEDURE Init ; | |
1630 | VAR | |
1631 | pCall: PtrToCallFrame ; | |
1632 | BEGIN | |
1633 | AnonymousName := 0 ; | |
1634 | CurrentError := NIL ; | |
d5e2694e GM |
1635 | InitTree (ConstLitPoolTree) ; |
1636 | InitTree (ConstLitStringTree) ; | |
1637 | InitTree (DefModuleTree) ; | |
1638 | InitTree (ModuleTree) ; | |
1639 | Symbols := InitIndex (1) ; | |
1640 | ConstLitArray := InitIndex (1) ; | |
1eee94d3 GM |
1641 | FreeSymbol := 1 ; |
1642 | ScopePtr := 1 ; | |
1643 | ScopeCallFrame := InitIndex(1) ; | |
1644 | NEW(pCall) ; | |
1645 | WITH pCall^ DO | |
1646 | Main := NulSym ; | |
1647 | Search := NulSym | |
1648 | END ; | |
1649 | PutIndice(ScopeCallFrame, ScopePtr, pCall) ; | |
1650 | CurrentModule := NulSym ; | |
1651 | MainModule := NulSym ; | |
1652 | FileModule := NulSym ; | |
1653 | TemporaryNo := 0 ; | |
1654 | (* | |
1655 | InitList(FreeFVarientList) ; (* Lists used to maintain GC of field *) | |
1656 | InitList(UsedFVarientList) ; (* varients. *) | |
1657 | *) | |
1658 | InitList(UnresolvedConstructorType) ; | |
1659 | ||
1660 | InitBase(BuiltinsLocation(), BaseModule) ; | |
1661 | StartScope(BaseModule) ; (* BaseModule scope placed at the bottom of the stack *) | |
1662 | BaseScopePtr := ScopePtr ; (* BaseScopePtr points to the top of the BaseModule scope *) | |
1663 | InitList(AddressTypes) ; | |
1664 | ReportedUnknowns := InitSet(1) | |
1665 | END Init ; | |
1666 | ||
1667 | ||
1668 | (* | |
1669 | FromModuleGetSym - attempts to find a symbol of name, n, in the | |
1670 | module, mod, scope. An unknown symbol is created | |
1671 | at token position tok if necessary. | |
1672 | *) | |
1673 | ||
1674 | PROCEDURE FromModuleGetSym (tok: CARDINAL; n: Name; mod: CARDINAL) : CARDINAL ; | |
1675 | VAR | |
1676 | n1 : Name ; | |
1677 | sym : CARDINAL ; | |
1678 | OldScopePtr: CARDINAL ; | |
1679 | BEGIN | |
1680 | OldScopePtr := ScopePtr ; | |
1681 | StartScope (mod) ; | |
1682 | sym := RequestSym (tok, n) ; | |
1683 | EndScope ; | |
1684 | IF sym=NulSym | |
1685 | THEN | |
1686 | (* --fixme-- can sym ever be NulSym? *) | |
1687 | n1 := GetSymName(mod) ; | |
1688 | WriteFormat2('cannot find procedure %a in module, %a', | |
1689 | n, n1) | |
1690 | END ; | |
1691 | ScopePtr := OldScopePtr ; | |
1692 | RETURN( sym ) | |
1693 | END FromModuleGetSym ; | |
1694 | ||
1695 | ||
1696 | (* | |
1697 | AddSymToUnknown - | |
1698 | *) | |
1699 | ||
1700 | PROCEDURE AddSymToUnknown (scope: CARDINAL; name: Name; Sym: CARDINAL) ; | |
1701 | VAR | |
1702 | pSym: PtrToSymbol ; | |
1703 | n : Name ; | |
1704 | BEGIN | |
1705 | IF DebugUnknowns | |
1706 | THEN | |
1707 | n := GetSymName(scope) ; | |
1708 | printf3('adding unknown %a (%d) to scope %a\n', name, Sym, n) | |
1709 | END ; | |
1710 | ||
1711 | (* Add symbol to unknown tree *) | |
1712 | pSym := GetPsym(scope) ; | |
1713 | WITH pSym^ DO | |
1714 | CASE SymbolType OF | |
1715 | ||
1716 | DefImpSym : PutSymKey(DefImp.Unresolved, name, Sym) | | |
1717 | ModuleSym : PutSymKey(Module.Unresolved, name, Sym) | | |
1718 | ProcedureSym: PutSymKey(Procedure.Unresolved, name, Sym) | |
1719 | ||
1720 | ELSE | |
1721 | InternalError ('expecting DefImp, Module or Procedure symbol') | |
1722 | END | |
1723 | END | |
1724 | END AddSymToUnknown ; | |
1725 | ||
1726 | ||
1727 | (* | |
1728 | AddSymToUnknownTree - adds a symbol with name, name, and Sym to the | |
1729 | unknown tree. | |
1730 | *) | |
1731 | ||
1732 | PROCEDURE AddSymToUnknownTree (ScopeId: INTEGER; name: Name; Sym: CARDINAL) ; | |
1733 | VAR | |
1734 | pCall : PtrToCallFrame ; | |
1735 | ScopeSym: CARDINAL ; | |
1736 | BEGIN | |
1737 | IF ScopeId>0 | |
1738 | THEN | |
1739 | (* choose to place the unknown symbol in the first module scope | |
1740 | outside the current scope *) | |
1741 | REPEAT | |
1742 | pCall := GetPcall(ScopeId) ; | |
1743 | ScopeSym := pCall^.Main ; | |
1744 | IF (ScopeSym>0) AND (IsDefImp(ScopeSym) OR IsModule(ScopeSym)) | |
1745 | THEN | |
1746 | AddSymToUnknown(ScopeSym, name, Sym) ; | |
1747 | RETURN | |
1748 | END ; | |
1749 | DEC(ScopeId) | |
1750 | UNTIL ScopeId=0 | |
1751 | END ; | |
1752 | AddSymToUnknown(CurrentModule, name, Sym) | |
1753 | END AddSymToUnknownTree ; | |
1754 | ||
1755 | ||
1756 | (* | |
1757 | SubSymFromUnknownTree - removes a symbol with name, name, from the | |
1758 | unknown tree. | |
1759 | *) | |
1760 | ||
1761 | PROCEDURE SubSymFromUnknownTree (name: Name) ; | |
1762 | VAR | |
1763 | pCall : PtrToCallFrame ; | |
1764 | ScopeSym, | |
1765 | ScopeId : CARDINAL ; | |
1766 | BEGIN | |
1767 | IF ScopePtr>0 | |
1768 | THEN | |
1769 | ScopeId := ScopePtr ; | |
1770 | REPEAT | |
1771 | pCall := GetPcall(ScopeId) ; | |
1772 | ScopeSym := pCall^.Search ; | |
1773 | IF IsModule(ScopeSym) OR IsDefImp(ScopeSym) OR IsProcedure(ScopeSym) | |
1774 | THEN | |
1775 | IF RemoveFromUnresolvedTree(ScopeSym, name) | |
1776 | THEN | |
1777 | RETURN | |
1778 | END | |
1779 | END ; | |
1780 | DEC(ScopeId) ; | |
1781 | UNTIL (ScopeId>0) AND (IsModule(ScopeSym) OR IsDefImp(ScopeSym)) | |
1782 | END ; | |
1783 | IF RemoveFromUnresolvedTree(CurrentModule, name) | |
1784 | THEN | |
1785 | END | |
1786 | END SubSymFromUnknownTree ; | |
1787 | ||
1788 | ||
1789 | (* | |
1790 | GetSymFromUnknownTree - returns a symbol with name, name, from the | |
1791 | unknown tree. | |
1792 | If no symbol with name is found then NulSym | |
1793 | is returned. | |
1794 | *) | |
1795 | ||
1796 | PROCEDURE GetSymFromUnknownTree (name: Name) : CARDINAL ; | |
1797 | VAR | |
1798 | pCall : PtrToCallFrame ; | |
1799 | ScopeSym, | |
1800 | ScopeId , | |
1801 | Sym : CARDINAL ; | |
1802 | BEGIN | |
1803 | IF ScopePtr>0 | |
1804 | THEN | |
1805 | ScopeId := ScopePtr ; | |
1806 | REPEAT | |
1807 | pCall := GetPcall(ScopeId) ; | |
1808 | ScopeSym := pCall^.Search ; | |
1809 | IF IsModule(ScopeSym) OR IsDefImp(ScopeSym) OR IsProcedure(ScopeSym) | |
1810 | THEN | |
1811 | Sym := ExamineUnresolvedTree(ScopeSym, name) ; | |
1812 | IF Sym#NulSym | |
1813 | THEN | |
1814 | RETURN( Sym ) | |
1815 | END | |
1816 | END ; | |
1817 | DEC(ScopeId) ; | |
1818 | UNTIL (ScopeId>0) AND (IsModule(ScopeSym) OR IsDefImp(ScopeSym)) | |
1819 | END ; | |
1820 | (* Get symbol from unknown tree *) | |
1821 | RETURN( ExamineUnresolvedTree(CurrentModule, name) ) | |
1822 | END GetSymFromUnknownTree ; | |
1823 | ||
1824 | ||
1825 | (* | |
1826 | ExamineUnresolvedTree - returns a symbol with name, name, from the | |
1827 | unresolved tree of module, ModSym. | |
1828 | If no symbol with name is found then NulSym | |
1829 | is returned. | |
1830 | *) | |
1831 | ||
1832 | PROCEDURE ExamineUnresolvedTree (ScopeSym: CARDINAL; name: Name) : CARDINAL ; | |
1833 | VAR | |
1834 | pSym: PtrToSymbol ; | |
1835 | Sym : CARDINAL ; | |
1836 | BEGIN | |
1837 | (* Get symbol from unknown tree *) | |
1838 | pSym := GetPsym(ScopeSym) ; | |
1839 | WITH pSym^ DO | |
1840 | CASE SymbolType OF | |
1841 | ||
1842 | DefImpSym : Sym := GetSymKey(DefImp.Unresolved, name) | | |
1843 | ModuleSym : Sym := GetSymKey(Module.Unresolved, name) | | |
1844 | ProcedureSym: Sym := GetSymKey(Procedure.Unresolved, name) | |
1845 | ||
1846 | ELSE | |
1847 | InternalError ('expecting DefImp, Module or Procedure symbol') | |
1848 | END | |
1849 | END ; | |
1850 | RETURN( Sym ) | |
1851 | END ExamineUnresolvedTree ; | |
1852 | ||
1853 | ||
1854 | (* | |
1855 | TryMoveUndeclaredSymToInnerModule - attempts to move a symbol of | |
1856 | name, name, which is | |
1857 | currently undefined in the | |
1858 | outer scope to the inner scope. | |
1859 | If successful then the symbol is | |
1860 | returned otherwise NulSym is | |
1861 | returned. | |
1862 | *) | |
1863 | ||
1864 | PROCEDURE TryMoveUndeclaredSymToInnerModule (OuterScope, | |
1865 | InnerScope: CARDINAL; | |
1866 | name: Name) : CARDINAL ; | |
1867 | VAR | |
1868 | pSym: PtrToSymbol ; | |
1869 | sym : CARDINAL ; | |
1870 | BEGIN | |
1871 | (* assume this should not be called if OuterScope was a procedure | |
1872 | as this case is handled by the caller (P1SymBuild) | |
1873 | *) | |
1874 | Assert(IsModule(OuterScope) OR IsDefImp(OuterScope)) ; | |
1875 | sym := GetExportUndeclared(OuterScope, name) ; | |
1876 | IF sym#NulSym | |
1877 | THEN | |
1878 | Assert(IsUnknown(sym)) ; | |
1879 | RemoveExportUndeclared(OuterScope, sym) ; | |
1880 | AddSymToModuleScope(OuterScope, sym) ; | |
1881 | AddVarToScopeList(OuterScope, sym) ; | |
1882 | pSym := GetPsym(OuterScope) ; | |
1883 | WITH pSym^ DO | |
1884 | CASE SymbolType OF | |
1885 | ||
1886 | DefImpSym: IF GetSymKey(DefImp.Unresolved, name)=sym | |
1887 | THEN | |
1888 | DelSymKey(DefImp.Unresolved, name) | |
1889 | END | | |
1890 | ModuleSym: IF GetSymKey(Module.Unresolved, name)=sym | |
1891 | THEN | |
1892 | DelSymKey(Module.Unresolved, name) | |
1893 | END | |
1894 | ||
1895 | ELSE | |
1896 | InternalError ('expecting DefImp, Module symbol') | |
1897 | END | |
1898 | END ; | |
1899 | AddSymToUnknown(InnerScope, name, sym) ; | |
1900 | PutExportUndeclared(InnerScope, sym) | |
1901 | END ; | |
1902 | RETURN( sym ) | |
1903 | END TryMoveUndeclaredSymToInnerModule ; | |
1904 | ||
1905 | ||
1906 | (* | |
1907 | RemoveFromUnresolvedTree - removes a symbol with name, name, from the | |
1908 | unresolved tree of symbol, ScopeSym. | |
1909 | *) | |
1910 | ||
1911 | PROCEDURE RemoveFromUnresolvedTree (ScopeSym: CARDINAL; name: Name) : BOOLEAN ; | |
1912 | VAR | |
1913 | pSym: PtrToSymbol ; | |
1914 | BEGIN | |
1915 | (* Get symbol from unknown tree *) | |
1916 | pSym := GetPsym(ScopeSym) ; | |
1917 | WITH pSym^ DO | |
1918 | CASE SymbolType OF | |
1919 | ||
1920 | DefImpSym : IF GetSymKey(DefImp.Unresolved, name)#NulKey | |
1921 | THEN | |
1922 | DelSymKey(DefImp.Unresolved, name) ; | |
1923 | RETURN( TRUE ) | |
1924 | END | | |
1925 | ModuleSym : IF GetSymKey(Module.Unresolved, name)#NulKey | |
1926 | THEN | |
1927 | DelSymKey(Module.Unresolved, name) ; | |
1928 | RETURN( TRUE ) | |
1929 | END | | |
1930 | ProcedureSym: IF GetSymKey(Procedure.Unresolved, name)#NulKey | |
1931 | THEN | |
1932 | DelSymKey(Procedure.Unresolved, name) ; | |
1933 | RETURN( TRUE ) | |
1934 | END | |
1935 | ||
1936 | ELSE | |
1937 | InternalError ('expecting DefImp, Module or Procedure symbol') | |
1938 | END | |
1939 | END ; | |
1940 | RETURN( FALSE ) | |
1941 | END RemoveFromUnresolvedTree ; | |
1942 | ||
1943 | ||
1944 | (* | |
1945 | FetchUnknownSym - returns a symbol from the unknown tree if one is | |
1946 | available. It also updates the unknown tree. | |
1947 | *) | |
1948 | ||
1949 | PROCEDURE FetchUnknownSym (name: Name) : CARDINAL ; | |
1950 | VAR | |
1951 | Sym: CARDINAL ; | |
1952 | BEGIN | |
1953 | Sym := GetSymFromUnknownTree(name) ; | |
1954 | IF Sym#NulSym | |
1955 | THEN | |
1956 | SubSymFromUnknownTree(name) | |
1957 | END ; | |
1958 | RETURN( Sym ) | |
1959 | END FetchUnknownSym ; | |
1960 | ||
1961 | ||
1962 | (* | |
1963 | TransparentScope - returns true is the scope symbol Sym is allowed | |
1964 | to look to an outer level for a symbol. | |
1965 | ie is the symbol allowed to look to the parent | |
1966 | scope for a symbol. | |
1967 | *) | |
1968 | ||
1969 | PROCEDURE TransparentScope (Sym: CARDINAL) : BOOLEAN ; | |
1970 | VAR | |
1971 | pSym: PtrToSymbol ; | |
1972 | BEGIN | |
1973 | pSym := GetPsym(Sym) ; | |
1974 | WITH pSym^ DO | |
1975 | RETURN( (SymbolType#DefImpSym) AND (SymbolType#ModuleSym) ) | |
1976 | END | |
1977 | END TransparentScope ; | |
1978 | ||
1979 | ||
1980 | (* | |
1981 | AddSymToModuleScope - adds a symbol, Sym, to the scope of the module | |
1982 | ModSym. | |
1983 | *) | |
1984 | ||
1985 | PROCEDURE AddSymToModuleScope (ModSym: CARDINAL; Sym: CARDINAL) ; | |
1986 | VAR | |
1987 | pSym: PtrToSymbol ; | |
1988 | BEGIN | |
1989 | pSym := GetPsym(ModSym) ; | |
1990 | WITH pSym^ DO | |
1991 | CASE SymbolType OF | |
1992 | ||
1993 | DefImpSym : IF GetSymKey(DefImp.LocalSymbols, GetSymName(Sym))=NulKey | |
1994 | THEN | |
1995 | PutSymKey(DefImp.LocalSymbols, GetSymName(Sym), Sym) | |
1996 | ELSE | |
1997 | MetaError1 ('{%kIMPORT} name clash with symbol {%1Ead} symbol already declared ', Sym) | |
1998 | END | | |
1999 | ModuleSym : IF GetSymKey(Module.LocalSymbols, GetSymName(Sym))=NulKey | |
2000 | THEN | |
2001 | PutSymKey(Module.LocalSymbols, GetSymName(Sym), Sym) | |
2002 | ELSE | |
2003 | MetaError1 ('{%kIMPORT} name clash with symbol {%1Ead} symbol already declared ', Sym) | |
2004 | END | | |
2005 | ProcedureSym: IF GetSymKey(Procedure.LocalSymbols, GetSymName(Sym))=NulKey | |
2006 | THEN | |
2007 | PutSymKey(Procedure.LocalSymbols, GetSymName(Sym), Sym) | |
2008 | ELSE | |
2009 | MetaError1 ('{%kIMPORT} name clash with symbol {%1Ead} symbol already declared ', Sym) | |
2010 | END | |
2011 | ||
2012 | ELSE | |
2013 | InternalError ('expecting Module or DefImp symbol') | |
2014 | END | |
2015 | END | |
2016 | END AddSymToModuleScope ; | |
2017 | ||
2018 | ||
2019 | (* | |
2020 | GetCurrentModuleScope - returns the module symbol which forms the | |
2021 | current (possibly inner most) module. | |
2022 | *) | |
2023 | ||
2024 | PROCEDURE GetCurrentModuleScope () : CARDINAL ; | |
2025 | VAR | |
2026 | pCall: PtrToCallFrame ; | |
2027 | i : CARDINAL ; | |
2028 | BEGIN | |
2029 | i := ScopePtr ; | |
2030 | pCall := GetPcall(i) ; | |
2031 | WHILE (NOT IsModule(pCall^.Search)) AND | |
2032 | (NOT IsDefImp(pCall^.Search)) DO | |
2033 | Assert(i>0) ; | |
2034 | DEC(i) ; | |
2035 | pCall := GetPcall(i) | |
2036 | END ; | |
2037 | RETURN( pCall^.Search ) | |
2038 | END GetCurrentModuleScope ; | |
2039 | ||
2040 | ||
2041 | (* | |
2042 | GetLastModuleScope - returns the last module scope encountered, | |
2043 | the module scope before the Current Module Scope. | |
2044 | *) | |
2045 | ||
2046 | PROCEDURE GetLastModuleScope () : CARDINAL ; | |
2047 | VAR | |
2048 | pCall: PtrToCallFrame ; | |
2049 | i : CARDINAL ; | |
2050 | BEGIN | |
2051 | i := ScopePtr ; | |
2052 | pCall := GetPcall(i) ; | |
2053 | WHILE (NOT IsModule(pCall^.Search)) AND | |
2054 | (NOT IsDefImp(pCall^.Search)) DO | |
2055 | Assert(i>0) ; | |
2056 | DEC(i) ; | |
2057 | pCall := GetPcall(i) | |
2058 | END ; | |
2059 | (* Found module at position, i. *) | |
2060 | DEC(i) ; (* Move to an outer level module scope *) | |
2061 | pCall := GetPcall(i) ; | |
2062 | WHILE (NOT IsModule(pCall^.Search)) AND | |
2063 | (NOT IsDefImp(pCall^.Search)) DO | |
2064 | Assert(i>0) ; | |
2065 | DEC(i) ; | |
2066 | pCall := GetPcall(i) | |
2067 | END ; | |
2068 | (* Found module at position, i. *) | |
2069 | RETURN( pCall^.Search ) | |
2070 | END GetLastModuleScope ; | |
2071 | ||
2072 | ||
2073 | (* | |
2074 | GetLastModuleOrProcedureScope - returns the last module or procedure scope encountered, | |
2075 | the scope before the current module scope. | |
2076 | *) | |
2077 | ||
2078 | PROCEDURE GetLastModuleOrProcedureScope () : CARDINAL ; | |
2079 | VAR | |
2080 | pCall: PtrToCallFrame ; | |
2081 | i : CARDINAL ; | |
2082 | BEGIN | |
2083 | (* find current inner module *) | |
2084 | i := ScopePtr ; | |
2085 | pCall := GetPcall(i) ; | |
2086 | WHILE (NOT IsModule(pCall^.Search)) AND | |
2087 | (NOT IsDefImp(pCall^.Search)) DO | |
2088 | Assert(i>0) ; | |
2089 | DEC(i) ; | |
2090 | pCall := GetPcall(i) | |
2091 | END ; | |
2092 | (* found module at position, i. *) | |
2093 | DEC(i) ; (* Move to an outer level module or procedure scope *) | |
2094 | pCall := GetPcall(i) ; | |
2095 | WHILE (NOT IsModule(pCall^.Search)) AND | |
2096 | (NOT IsDefImp(pCall^.Search)) AND | |
2097 | (NOT IsProcedure(pCall^.Search)) DO | |
2098 | Assert(i>0) ; | |
2099 | DEC(i) ; | |
2100 | pCall := GetPcall(i) | |
2101 | END ; | |
2102 | (* Found module at position, i. *) | |
2103 | RETURN( pCall^.Search ) | |
2104 | END GetLastModuleOrProcedureScope ; | |
2105 | ||
2106 | ||
2107 | (* | |
2108 | AddSymToScope - adds a symbol Sym with name name to | |
2109 | the current scope symbol tree. | |
2110 | *) | |
2111 | ||
2112 | PROCEDURE AddSymToScope (Sym: CARDINAL; name: Name) ; | |
2113 | VAR | |
2114 | pSym : PtrToSymbol ; | |
2115 | pCall : PtrToCallFrame ; | |
2116 | ScopeId: CARDINAL ; | |
2117 | BEGIN | |
2118 | pCall := GetPcall(ScopePtr) ; | |
2119 | ScopeId := pCall^.Main ; | |
2120 | (* | |
2121 | WriteString('Adding ') ; WriteKey(name) ; WriteString(' :') ; WriteCard(Sym, 4) ; WriteString(' to scope: ') ; | |
2122 | WriteKey(GetSymName(ScopeId)) ; WriteLn ; | |
2123 | *) | |
2124 | pSym := GetPsym(ScopeId) ; | |
2125 | WITH pSym^ DO | |
2126 | CASE SymbolType OF | |
2127 | ||
2128 | DefImpSym : IF name#NulName | |
2129 | THEN | |
2130 | PutSymKey(DefImp.LocalSymbols, name, Sym) | |
2131 | END ; | |
2132 | IF IsEnumeration(Sym) | |
2133 | THEN | |
2134 | CheckEnumerationInList(DefImp.EnumerationScopeList, Sym) | |
2135 | END | | |
2136 | ModuleSym : IF name#NulName | |
2137 | THEN | |
2138 | PutSymKey(Module.LocalSymbols, name, Sym) | |
2139 | END ; | |
2140 | IF IsEnumeration(Sym) | |
2141 | THEN | |
2142 | CheckEnumerationInList(Module.EnumerationScopeList, Sym) | |
2143 | END | | |
2144 | ProcedureSym: IF name#NulName | |
2145 | THEN | |
2146 | PutSymKey(Procedure.LocalSymbols, name, Sym) | |
2147 | END ; | |
2148 | IF IsEnumeration(Sym) | |
2149 | THEN | |
2150 | CheckEnumerationInList(Procedure.EnumerationScopeList, Sym) | |
2151 | END | |
2152 | ||
2153 | ELSE | |
2154 | InternalError ('should never get here') | |
2155 | END | |
2156 | END | |
2157 | END AddSymToScope ; | |
2158 | ||
2159 | ||
2160 | (* | |
2161 | GetCurrentScope - returns the symbol who is responsible for the current | |
2162 | scope. Note that it ignore pseudo scopes. | |
2163 | *) | |
2164 | ||
2165 | PROCEDURE GetCurrentScope () : CARDINAL ; | |
2166 | VAR | |
2167 | pCall: PtrToCallFrame ; | |
2168 | BEGIN | |
2169 | pCall := GetPcall(ScopePtr) ; | |
2170 | RETURN( pCall^.Main ) | |
2171 | END GetCurrentScope ; | |
2172 | ||
2173 | ||
2174 | (* | |
2175 | StartScope - starts a block scope at Sym. Transparent determines | |
2176 | whether the search for a symbol will look at the | |
2177 | previous ScopeCallFrame if Sym does not contain the | |
2178 | symbol that GetSym is searching. | |
2179 | ||
2180 | WITH statements are partially implemented by calling | |
2181 | StartScope. Therefore we must retain the old Main from | |
2182 | the previous ScopePtr when a record is added to the scope | |
2183 | stack. (Main contains the symbol where all identifiers | |
2184 | should be added.) | |
2185 | *) | |
2186 | ||
2187 | PROCEDURE StartScope (Sym: CARDINAL) ; | |
2188 | VAR | |
2189 | oCall, | |
2190 | pCall: PtrToCallFrame ; | |
2191 | BEGIN | |
2192 | Sym := SkipType(Sym) ; | |
2193 | (* | |
2194 | WriteString('New scope is: ') ; WriteKey(GetSymName(Sym)) ; WriteLn ; | |
2195 | *) | |
2196 | INC(ScopePtr) ; | |
2197 | IF InBounds(ScopeCallFrame, ScopePtr) | |
2198 | THEN | |
2199 | pCall := GetPcall(ScopePtr) | |
2200 | ELSE | |
2201 | NEW(pCall) ; | |
2202 | PutIndice(ScopeCallFrame, ScopePtr, pCall) | |
2203 | END ; | |
2204 | WITH pCall^ DO | |
2205 | Start := ScopePtr-1 ; (* Previous ScopePtr value before StartScope *) | |
2206 | Search := Sym ; | |
2207 | ||
2208 | (* If Sym is a record then maintain the old Main scope for adding *) | |
2209 | (* new symbols to ie temporary variables. *) | |
2210 | IF IsRecord(Sym) | |
2211 | THEN | |
2212 | oCall := GetPcall(ScopePtr-1) ; | |
2213 | Main := oCall^.Main | |
2214 | ELSE | |
2215 | Main := Sym ; | |
2216 | PlaceMajorScopesEnumerationListOntoStack(Sym) | |
2217 | END | |
2218 | END | |
2219 | (* ; DisplayScopes *) | |
2220 | END StartScope ; | |
2221 | ||
2222 | ||
2223 | (* | |
2224 | PlaceMajorScopesEnumerationListOntoStack - places the DefImp, Module and | |
2225 | Procedure symbols enumeration | |
2226 | list onto the scope stack. | |
2227 | *) | |
2228 | ||
2229 | PROCEDURE PlaceMajorScopesEnumerationListOntoStack (Sym: CARDINAL) ; | |
2230 | VAR | |
2231 | pSym: PtrToSymbol ; | |
2232 | BEGIN | |
2233 | pSym := GetPsym(Sym) ; | |
2234 | WITH pSym^ DO | |
2235 | CASE SymbolType OF | |
2236 | ||
2237 | DefImpSym : PlaceEnumerationListOntoScope(DefImp.EnumerationScopeList) | | |
2238 | ModuleSym : PlaceEnumerationListOntoScope(Module.EnumerationScopeList) | | |
2239 | ProcedureSym: PlaceEnumerationListOntoScope(Procedure.EnumerationScopeList) | |
2240 | ||
2241 | ELSE | |
2242 | InternalError ('expecting - DefImp, Module or Procedure symbol') | |
2243 | END | |
2244 | END | |
2245 | END PlaceMajorScopesEnumerationListOntoStack ; | |
2246 | ||
2247 | ||
2248 | (* | |
2249 | PlaceEnumerationListOntoScope - places an enumeration list, l, onto the | |
2250 | scope stack. This list will automatically | |
2251 | removed via one call to EndScope which | |
2252 | matches the StartScope by which this | |
2253 | procedure is invoked. | |
2254 | *) | |
2255 | ||
2256 | PROCEDURE PlaceEnumerationListOntoScope (l: List) ; | |
2257 | VAR | |
2258 | i, n: CARDINAL ; | |
2259 | BEGIN | |
2260 | n := NoOfItemsInList(l) ; | |
2261 | i := 1 ; | |
2262 | WHILE i<=n DO | |
2263 | PseudoScope(GetItemFromList(l, i)) ; | |
2264 | INC(i) | |
2265 | END | |
2266 | END PlaceEnumerationListOntoScope ; | |
2267 | ||
2268 | ||
2269 | (* | |
2270 | EndScope - ends a block scope started by StartScope. The current | |
2271 | head of the symbol scope reverts back to the symbol | |
2272 | which was the Head of the symbol scope before the | |
2273 | last StartScope was called. | |
2274 | *) | |
2275 | ||
2276 | PROCEDURE EndScope ; | |
2277 | VAR | |
2278 | pCall: PtrToCallFrame ; | |
2279 | BEGIN | |
2280 | (* | |
2281 | ; WriteString('EndScope - ending scope: ') ; | |
2282 | pCall := GetPcall(ScopePtr) ; | |
2283 | ; WriteKey(GetSymName(pCall^.Search)) ; WriteLn ; | |
2284 | *) | |
2285 | pCall := GetPcall(ScopePtr) ; | |
2286 | ScopePtr := pCall^.Start | |
2287 | (* ; DisplayScopes *) | |
2288 | END EndScope ; | |
2289 | ||
2290 | ||
2291 | (* | |
2292 | PseudoScope - starts a pseudo scope at Sym. | |
2293 | We always connect parent up to the last scope, | |
2294 | to determine the transparancy of a scope we call | |
2295 | TransparentScope. | |
2296 | ||
2297 | A Pseudo scope has no end block, | |
2298 | but is terminated when the next EndScope is used. | |
2299 | The function of the pseudo scope is to provide an | |
2300 | automatic mechanism to solve enumeration types. | |
2301 | A declared enumeration type is a Pseudo scope and | |
2302 | identifiers used with the name of an enumeration | |
2303 | type field will find the enumeration symbol by | |
2304 | the scoping algorithm. | |
2305 | *) | |
2306 | ||
2307 | PROCEDURE PseudoScope (Sym: CARDINAL) ; | |
2308 | VAR | |
2309 | oCall, | |
2310 | pCall: PtrToCallFrame ; | |
2311 | BEGIN | |
2312 | IF IsEnumeration(Sym) | |
2313 | THEN | |
2314 | INC(ScopePtr) ; | |
2315 | IF InBounds(ScopeCallFrame, ScopePtr) | |
2316 | THEN | |
2317 | pCall := GetPcall(ScopePtr) | |
2318 | ELSE | |
2319 | NEW(pCall) ; | |
2320 | PutIndice(ScopeCallFrame, ScopePtr, pCall) | |
2321 | END ; | |
2322 | WITH pCall^ DO | |
2323 | oCall := GetPcall(ScopePtr-1) ; | |
2324 | Main := oCall^.Main ; | |
2325 | Start := oCall^.Start ; | |
2326 | Search := Sym | |
2327 | END | |
2328 | ELSE | |
2329 | InternalError ('expecting EnumerationSym') | |
2330 | END | |
2331 | END PseudoScope ; | |
2332 | ||
2333 | ||
2334 | (* | |
2335 | IsDeclaredIn - returns TRUE if a symbol was declared in, scope. | |
2336 | *) | |
2337 | ||
2338 | PROCEDURE IsDeclaredIn (scope, sym: CARDINAL) : BOOLEAN ; | |
2339 | VAR | |
2340 | s: CARDINAL ; | |
2341 | BEGIN | |
2342 | s := GetScope(sym) ; | |
2343 | WHILE s#scope DO | |
2344 | IF (s=NulSym) OR IsProcedure(s) OR IsModule(s) OR IsDefImp(s) | |
2345 | THEN | |
2346 | RETURN( FALSE ) | |
2347 | ELSE | |
2348 | s := GetScope(s) | |
2349 | END | |
2350 | END ; | |
2351 | RETURN( TRUE ) | |
2352 | END IsDeclaredIn ; | |
2353 | ||
2354 | ||
990d10ab GM |
2355 | (* |
2356 | SetFirstUsed - assigns the FirstUsed field in at to tok providing | |
2357 | it has not already been set. | |
2358 | *) | |
2359 | ||
2360 | PROCEDURE SetFirstUsed (tok: CARDINAL; VAR at: Where) ; | |
2361 | BEGIN | |
2362 | IF at.FirstUsed = UnknownTokenNo | |
2363 | THEN | |
2364 | at.FirstUsed := tok | |
2365 | END | |
2366 | END SetFirstUsed ; | |
2367 | ||
2368 | ||
2369 | (* | |
2370 | PutFirstUsed - sets tok to the first used providing it has not already been set. | |
2371 | It also includes the read and write quad into the usage list | |
2372 | providing the quad numbers are not 0. | |
2373 | *) | |
2374 | ||
2375 | PROCEDURE PutFirstUsed (object: CARDINAL; tok: CARDINAL; read, write: CARDINAL) ; | |
2376 | VAR | |
2377 | pSym: PtrToSymbol ; | |
2378 | BEGIN | |
2379 | IF IsVar (object) | |
2380 | THEN | |
2381 | pSym := GetPsym (object) ; | |
2382 | SetFirstUsed (tok, pSym^.Var.At) ; | |
2383 | IF read # 0 | |
2384 | THEN | |
2385 | PutReadQuad (object, GetMode (object), read) | |
2386 | END ; | |
2387 | IF write # 0 | |
2388 | THEN | |
2389 | PutWriteQuad (object, GetMode (object), write) | |
2390 | END | |
2391 | END | |
2392 | END PutFirstUsed ; | |
2393 | ||
2394 | ||
1eee94d3 GM |
2395 | (* |
2396 | MakeGnuAsm - create a GnuAsm symbol. | |
2397 | *) | |
2398 | ||
2399 | PROCEDURE MakeGnuAsm () : CARDINAL ; | |
2400 | VAR | |
2401 | pSym: PtrToSymbol ; | |
2402 | Sym : CARDINAL ; | |
2403 | BEGIN | |
2404 | NewSym(Sym) ; | |
990d10ab | 2405 | pSym := GetPsym (Sym) ; |
1eee94d3 GM |
2406 | WITH pSym^ DO |
2407 | SymbolType := GnuAsmSym ; | |
2408 | WITH GnuAsm DO | |
2409 | String := NulSym ; | |
990d10ab | 2410 | InitWhereDeclared (At) ; |
1eee94d3 GM |
2411 | Inputs := NulSym ; |
2412 | Outputs := NulSym ; | |
2413 | Trashed := NulSym ; | |
2414 | Volatile := FALSE ; | |
2415 | Simple := FALSE | |
2416 | END | |
2417 | END ; | |
2418 | RETURN( Sym ) | |
2419 | END MakeGnuAsm ; | |
2420 | ||
2421 | ||
2422 | (* | |
2423 | PutGnuAsm - places the instruction textual name into the GnuAsm symbol. | |
2424 | *) | |
2425 | ||
2426 | PROCEDURE PutGnuAsm (sym: CARDINAL; string: CARDINAL) ; | |
2427 | VAR | |
2428 | pSym: PtrToSymbol ; | |
2429 | BEGIN | |
990d10ab | 2430 | Assert (IsConstString (string)) ; |
1eee94d3 GM |
2431 | pSym := GetPsym(sym) ; |
2432 | WITH pSym^ DO | |
2433 | CASE SymbolType OF | |
2434 | ||
2435 | GnuAsmSym: GnuAsm.String := string | |
2436 | ||
2437 | ELSE | |
2438 | InternalError ('expecting PutGnuAsm symbol') | |
2439 | END | |
2440 | END | |
2441 | END PutGnuAsm ; | |
2442 | ||
2443 | ||
2444 | (* | |
2445 | GetGnuAsm - returns the string symbol, representing the instruction textual | |
2446 | of the GnuAsm symbol. It will return a ConstString. | |
2447 | *) | |
2448 | ||
2449 | PROCEDURE GetGnuAsm (sym: CARDINAL) : CARDINAL ; | |
2450 | VAR | |
2451 | pSym: PtrToSymbol ; | |
2452 | BEGIN | |
2453 | pSym := GetPsym(sym) ; | |
2454 | WITH pSym^ DO | |
2455 | CASE SymbolType OF | |
2456 | ||
990d10ab | 2457 | GnuAsmSym: RETURN GnuAsm.String |
1eee94d3 GM |
2458 | |
2459 | ELSE | |
2460 | InternalError ('expecting GnuAsm symbol') | |
2461 | END | |
2462 | END | |
2463 | END GetGnuAsm ; | |
2464 | ||
2465 | ||
2466 | (* | |
2467 | PutGnuAsmOutput - places the interface object, out, into GnuAsm symbol, sym. | |
2468 | *) | |
2469 | ||
2470 | PROCEDURE PutGnuAsmOutput (sym: CARDINAL; out: CARDINAL) ; | |
2471 | VAR | |
2472 | pSym: PtrToSymbol ; | |
2473 | BEGIN | |
2474 | pSym := GetPsym(sym) ; | |
2475 | WITH pSym^ DO | |
2476 | CASE SymbolType OF | |
2477 | ||
2478 | GnuAsmSym: GnuAsm.Outputs := out | |
2479 | ||
2480 | ELSE | |
2481 | InternalError ('expecting PutGnuAsm symbol') | |
2482 | END | |
2483 | END | |
2484 | END PutGnuAsmOutput ; | |
2485 | ||
2486 | ||
2487 | (* | |
2488 | PutGnuAsmInput - places the interface object, in, into GnuAsm symbol, sym. | |
2489 | *) | |
2490 | ||
2491 | PROCEDURE PutGnuAsmInput (sym: CARDINAL; in: CARDINAL) ; | |
2492 | VAR | |
2493 | pSym: PtrToSymbol ; | |
2494 | BEGIN | |
990d10ab | 2495 | pSym := GetPsym (sym) ; |
1eee94d3 GM |
2496 | WITH pSym^ DO |
2497 | CASE SymbolType OF | |
2498 | ||
2499 | GnuAsmSym: GnuAsm.Inputs := in | |
2500 | ||
2501 | ELSE | |
2502 | InternalError ('expecting PutGnuAsm symbol') | |
2503 | END | |
2504 | END | |
2505 | END PutGnuAsmInput ; | |
2506 | ||
2507 | ||
2508 | (* | |
2509 | PutGnuAsmTrash - places the interface object, trash, into GnuAsm symbol, sym. | |
2510 | *) | |
2511 | ||
2512 | PROCEDURE PutGnuAsmTrash (sym: CARDINAL; trash: CARDINAL) ; | |
2513 | VAR | |
2514 | pSym: PtrToSymbol ; | |
2515 | BEGIN | |
990d10ab | 2516 | pSym := GetPsym (sym) ; |
1eee94d3 GM |
2517 | WITH pSym^ DO |
2518 | CASE SymbolType OF | |
2519 | ||
2520 | GnuAsmSym: GnuAsm.Trashed := trash | |
2521 | ||
2522 | ELSE | |
2523 | InternalError ('expecting PutGnuAsm symbol') | |
2524 | END | |
2525 | END | |
2526 | END PutGnuAsmTrash ; | |
2527 | ||
2528 | ||
2529 | (* | |
2530 | GetGnuAsmInput - returns the input list of registers. | |
2531 | *) | |
2532 | ||
2533 | PROCEDURE GetGnuAsmInput (sym: CARDINAL) : CARDINAL ; | |
2534 | VAR | |
2535 | pSym: PtrToSymbol ; | |
2536 | BEGIN | |
990d10ab | 2537 | pSym := GetPsym (sym) ; |
1eee94d3 GM |
2538 | WITH pSym^ DO |
2539 | CASE SymbolType OF | |
2540 | ||
990d10ab | 2541 | GnuAsmSym: RETURN GnuAsm.Inputs |
1eee94d3 GM |
2542 | |
2543 | ELSE | |
2544 | InternalError ('expecting PutGnuAsm symbol') | |
2545 | END | |
2546 | END | |
2547 | END GetGnuAsmInput ; | |
2548 | ||
2549 | ||
2550 | (* | |
2551 | GetGnuAsmOutput - returns the output list of registers. | |
2552 | *) | |
2553 | ||
2554 | PROCEDURE GetGnuAsmOutput (sym: CARDINAL) : CARDINAL ; | |
2555 | VAR | |
2556 | pSym: PtrToSymbol ; | |
2557 | BEGIN | |
990d10ab | 2558 | pSym := GetPsym (sym) ; |
1eee94d3 GM |
2559 | WITH pSym^ DO |
2560 | CASE SymbolType OF | |
2561 | ||
990d10ab | 2562 | GnuAsmSym: RETURN GnuAsm.Outputs |
1eee94d3 GM |
2563 | |
2564 | ELSE | |
2565 | InternalError ('expecting PutGnuAsm symbol') | |
2566 | END | |
2567 | END | |
2568 | END GetGnuAsmOutput ; | |
2569 | ||
2570 | ||
2571 | (* | |
2572 | GetGnuAsmTrash - returns the list of trashed registers. | |
2573 | *) | |
2574 | ||
2575 | PROCEDURE GetGnuAsmTrash (sym: CARDINAL) : CARDINAL ; | |
2576 | VAR | |
2577 | pSym: PtrToSymbol ; | |
2578 | BEGIN | |
990d10ab | 2579 | pSym := GetPsym (sym) ; |
1eee94d3 GM |
2580 | WITH pSym^ DO |
2581 | CASE SymbolType OF | |
2582 | ||
990d10ab | 2583 | GnuAsmSym: RETURN GnuAsm.Trashed |
1eee94d3 GM |
2584 | |
2585 | ELSE | |
2586 | InternalError ('expecting PutGnuAsm symbol') | |
2587 | END | |
2588 | END | |
2589 | END GetGnuAsmTrash ; | |
2590 | ||
2591 | ||
2592 | (* | |
2593 | PutGnuAsmVolatile - defines a GnuAsm symbol as VOLATILE. | |
2594 | *) | |
2595 | ||
2596 | PROCEDURE PutGnuAsmVolatile (Sym: CARDINAL) ; | |
2597 | VAR | |
2598 | pSym: PtrToSymbol ; | |
2599 | BEGIN | |
990d10ab | 2600 | pSym := GetPsym (Sym) ; |
1eee94d3 GM |
2601 | WITH pSym^ DO |
2602 | CASE SymbolType OF | |
2603 | ||
2604 | GnuAsmSym: GnuAsm.Volatile := TRUE | |
2605 | ||
2606 | ELSE | |
2607 | InternalError ('expecting GnuAsm symbol') | |
2608 | END | |
2609 | END | |
2610 | END PutGnuAsmVolatile ; | |
2611 | ||
2612 | ||
2613 | (* | |
2614 | PutGnuAsmSimple - defines a GnuAsm symbol as a simple kind. | |
2615 | *) | |
2616 | ||
2617 | PROCEDURE PutGnuAsmSimple (Sym: CARDINAL) ; | |
2618 | VAR | |
2619 | pSym: PtrToSymbol ; | |
2620 | BEGIN | |
990d10ab | 2621 | pSym := GetPsym (Sym) ; |
1eee94d3 GM |
2622 | WITH pSym^ DO |
2623 | CASE SymbolType OF | |
2624 | ||
2625 | GnuAsmSym: GnuAsm.Simple := TRUE | |
2626 | ||
2627 | ELSE | |
2628 | InternalError ('expecting GnuAsm symbol') | |
2629 | END | |
2630 | END | |
2631 | END PutGnuAsmSimple ; | |
2632 | ||
2633 | ||
2634 | (* | |
2635 | MakeRegInterface - creates and returns a register interface symbol. | |
2636 | *) | |
2637 | ||
2638 | PROCEDURE MakeRegInterface () : CARDINAL ; | |
2639 | VAR | |
2640 | pSym: PtrToSymbol ; | |
2641 | Sym : CARDINAL ; | |
2642 | BEGIN | |
990d10ab GM |
2643 | NewSym (Sym) ; |
2644 | pSym := GetPsym (Sym) ; | |
1eee94d3 GM |
2645 | WITH pSym^ DO |
2646 | SymbolType := InterfaceSym ; | |
2647 | WITH Interface DO | |
990d10ab GM |
2648 | Parameters := InitIndex (1) ; |
2649 | InitWhereDeclared (At) | |
1eee94d3 GM |
2650 | END |
2651 | END ; | |
2652 | RETURN( Sym ) | |
2653 | END MakeRegInterface ; | |
2654 | ||
2655 | ||
2656 | (* | |
2657 | PutRegInterface - places a, name, string, and, object, into the interface array, | |
2658 | sym, at position, i. | |
2659 | The string symbol will either be a register name or a constraint. | |
2660 | The object is an optional Modula-2 variable or constant symbol. | |
990d10ab GM |
2661 | read and write are the quadruple numbers representing any read |
2662 | or write operation. | |
1eee94d3 GM |
2663 | *) |
2664 | ||
990d10ab GM |
2665 | PROCEDURE PutRegInterface (tok: CARDINAL; |
2666 | sym: CARDINAL; i: CARDINAL; n: Name; string, object: CARDINAL; | |
2667 | read, write: CARDINAL) ; | |
1eee94d3 GM |
2668 | VAR |
2669 | pSym : PtrToSymbol ; | |
2670 | p : PtrToAsmConstraint ; | |
2671 | BEGIN | |
2672 | pSym := GetPsym(sym) ; | |
2673 | WITH pSym^ DO | |
2674 | CASE SymbolType OF | |
2675 | ||
2676 | InterfaceSym: IF Indexing.InBounds(Interface.Parameters, i) | |
2677 | THEN | |
2678 | p := Indexing.GetIndice(Interface.Parameters, i) | |
2679 | ELSIF i=Indexing.HighIndice(Interface.Parameters)+1 | |
2680 | THEN | |
2681 | NEW(p) ; | |
2682 | Indexing.PutIndice(Interface.Parameters, i, p) | |
2683 | ELSE | |
2684 | InternalError ('expecting to add parameters sequentially') | |
2685 | END ; | |
2686 | WITH p^ DO | |
990d10ab GM |
2687 | tokpos := tok ; |
2688 | name := n ; | |
2689 | str := string ; | |
2690 | obj := object | |
2691 | END ; | |
2692 | PutFirstUsed (object, tok, read, write) | |
1eee94d3 GM |
2693 | |
2694 | ELSE | |
2695 | InternalError ('expecting Interface symbol') | |
2696 | END | |
2697 | END | |
2698 | END PutRegInterface ; | |
2699 | ||
2700 | ||
2701 | (* | |
2702 | GetRegInterface - gets a, name, string, and, object, from the interface array, | |
2703 | sym, from position, i. | |
2704 | *) | |
2705 | ||
990d10ab GM |
2706 | PROCEDURE GetRegInterface (sym: CARDINAL; i: CARDINAL; |
2707 | VAR tok: CARDINAL; VAR n: Name; VAR string, object: CARDINAL) ; | |
1eee94d3 GM |
2708 | VAR |
2709 | pSym: PtrToSymbol ; | |
2710 | p : PtrToAsmConstraint ; | |
2711 | BEGIN | |
2712 | pSym := GetPsym(sym) ; | |
2713 | WITH pSym^ DO | |
2714 | CASE SymbolType OF | |
2715 | ||
2716 | InterfaceSym: IF Indexing.InBounds(Interface.Parameters, i) | |
2717 | THEN | |
2718 | p := Indexing.GetIndice(Interface.Parameters, i) ; | |
2719 | WITH p^ DO | |
990d10ab | 2720 | tok := tokpos ; |
1eee94d3 GM |
2721 | n := name ; |
2722 | string := str ; | |
2723 | object := obj | |
2724 | END | |
2725 | ELSE | |
990d10ab | 2726 | tok := UnknownTokenNo ; |
1eee94d3 GM |
2727 | n := NulName ; |
2728 | string := NulSym ; | |
2729 | object := NulSym | |
2730 | END | |
2731 | ||
2732 | ELSE | |
2733 | InternalError ('expecting Interface symbol') | |
2734 | END | |
2735 | END | |
2736 | END GetRegInterface ; | |
2737 | ||
2738 | ||
2739 | (* | |
2740 | GetSubrange - returns HighSym and LowSym - two constants which make up the | |
2741 | subrange. | |
2742 | *) | |
2743 | ||
2744 | PROCEDURE GetSubrange (Sym: CARDINAL; VAR HighSym, LowSym: CARDINAL) ; | |
2745 | VAR | |
2746 | pSym: PtrToSymbol ; | |
2747 | BEGIN | |
2748 | pSym := GetPsym(Sym) ; | |
2749 | WITH pSym^ DO | |
2750 | CASE SymbolType OF | |
2751 | ||
2752 | SubrangeSym: HighSym := Subrange.High ; | |
2753 | LowSym := Subrange.Low | |
2754 | ||
2755 | ELSE | |
2756 | InternalError ('expecting Subrange symbol') | |
2757 | END | |
2758 | END | |
2759 | END GetSubrange ; | |
2760 | ||
2761 | ||
2762 | (* | |
2763 | PutSubrange - places LowSym and HighSym as two symbols | |
2764 | which provide the limits of the range. | |
2765 | *) | |
2766 | ||
2767 | PROCEDURE PutSubrange (Sym: CARDINAL; LowSym, HighSym: CARDINAL; | |
2768 | TypeSymbol: CARDINAL) ; | |
2769 | VAR | |
2770 | pSym: PtrToSymbol ; | |
2771 | BEGIN | |
2772 | pSym := GetPsym(Sym) ; | |
2773 | WITH pSym^ DO | |
2774 | CASE SymbolType OF | |
2775 | ||
2776 | SubrangeSym: Subrange.Low := LowSym ; (* Index to symbol for lower *) | |
2777 | Subrange.High := HighSym ; (* Index to symbol for higher *) | |
2778 | Subrange.Type := TypeSymbol ; (* Index to type symbol for *) | |
2779 | (* the type of subrange. *) | |
2780 | ELSE | |
2781 | InternalError ('expecting Subrange symbol') | |
2782 | END | |
2783 | END | |
2784 | END PutSubrange ; | |
2785 | ||
2786 | ||
2787 | (* | |
2788 | SetCurrentModule - Used to set the CurrentModule to a symbol, Sym. | |
2789 | This Sym must represent the module name of the | |
2790 | file currently being compiled. | |
2791 | *) | |
2792 | ||
2793 | PROCEDURE SetCurrentModule (Sym: CARDINAL) ; | |
2794 | BEGIN | |
2795 | CurrentModule := Sym | |
2796 | END SetCurrentModule ; | |
2797 | ||
2798 | ||
2799 | (* | |
2800 | GetCurrentModule - returns the current module Sym that is being | |
2801 | compiled. | |
2802 | *) | |
2803 | ||
2804 | PROCEDURE GetCurrentModule () : CARDINAL ; | |
2805 | BEGIN | |
2806 | RETURN( CurrentModule ) | |
2807 | END GetCurrentModule ; | |
2808 | ||
2809 | ||
2810 | (* | |
2811 | SetMainModule - Used to set the MainModule to a symbol, Sym. | |
2812 | This Sym must represent the main module which was | |
2813 | envoked by the user to be compiled. | |
2814 | *) | |
2815 | ||
2816 | PROCEDURE SetMainModule (Sym: CARDINAL) ; | |
2817 | BEGIN | |
2818 | MainModule := Sym | |
2819 | END SetMainModule ; | |
2820 | ||
2821 | ||
2822 | (* | |
2823 | GetMainModule - returns the main module symbol that was requested by | |
2824 | the user to be compiled. | |
2825 | *) | |
2826 | ||
2827 | PROCEDURE GetMainModule () : CARDINAL ; | |
2828 | BEGIN | |
2829 | RETURN( MainModule ) | |
2830 | END GetMainModule ; | |
2831 | ||
2832 | ||
2833 | (* | |
2834 | SetFileModule - Used to set the FileModule to a symbol, Sym. | |
2835 | This Sym must represent the current program module | |
2836 | file which is being parsed. | |
2837 | *) | |
2838 | ||
2839 | PROCEDURE SetFileModule (Sym: CARDINAL) ; | |
2840 | BEGIN | |
2841 | FileModule := Sym | |
2842 | END SetFileModule ; | |
2843 | ||
2844 | ||
2845 | (* | |
2846 | GetFileModule - returns the FileModule symbol that was requested by | |
2847 | the user to be compiled. | |
2848 | *) | |
2849 | ||
2850 | PROCEDURE GetFileModule () : CARDINAL ; | |
2851 | BEGIN | |
2852 | RETURN( FileModule ) | |
2853 | END GetFileModule ; | |
2854 | ||
2855 | ||
2856 | (* | |
2857 | GetBaseModule - returns the base module symbol that contains Modula-2 | |
2858 | base types, procedures and functions. | |
2859 | *) | |
2860 | ||
2861 | PROCEDURE GetBaseModule () : CARDINAL ; | |
2862 | BEGIN | |
2863 | RETURN( BaseModule ) | |
2864 | END GetBaseModule ; | |
2865 | ||
2866 | ||
2867 | (* | |
2868 | GetSym - searches the current scope (and previous scopes if the | |
2869 | scope tranparent allows) for a symbol with name. | |
2870 | *) | |
2871 | ||
2872 | PROCEDURE GetSym (name: Name) : CARDINAL ; | |
2873 | VAR | |
2874 | Sym : CARDINAL ; | |
2875 | OldScopePtr: CARDINAL ; | |
2876 | BEGIN | |
2877 | Sym := GetScopeSym(name, TRUE) ; | |
2878 | IF Sym=NulSym | |
2879 | THEN | |
2880 | (* Check default base types for symbol *) | |
2881 | OldScopePtr := ScopePtr ; (* Save ScopePtr *) | |
2882 | ScopePtr := BaseScopePtr ; (* Alter ScopePtr to point to top of BaseModule *) | |
2883 | Sym := GetScopeSym(name, FALSE) ; (* Search BaseModule for name *) | |
2884 | ScopePtr := OldScopePtr (* Restored ScopePtr *) | |
2885 | END ; | |
2886 | RETURN( Sym ) | |
2887 | END GetSym ; | |
2888 | ||
2889 | ||
2890 | (* | |
2891 | CanLookThroughScope - by default this procedure returns TRUE. It only returns | |
2892 | FALSE if, throughProcedure, is FALSE and the ScopeSym is | |
2893 | a procedure. | |
2894 | *) | |
2895 | ||
2896 | PROCEDURE CanLookThroughScope (ScopeSym: CARDINAL; throughProcedure: BOOLEAN) : BOOLEAN ; | |
2897 | BEGIN | |
2898 | IF IsProcedure(ScopeSym) | |
2899 | THEN | |
2900 | RETURN( throughProcedure ) | |
2901 | ELSE | |
2902 | RETURN( TRUE ) | |
2903 | END | |
2904 | END CanLookThroughScope ; | |
2905 | ||
2906 | ||
2907 | (* | |
2908 | GetScopeSym - searches the current scope and below, providing that the | |
2909 | scopes are transparent, for a symbol with name, name. | |
2910 | It only passes over procedure scopes if, throughProcedure, | |
2911 | is TRUE. | |
2912 | *) | |
2913 | ||
2914 | PROCEDURE GetScopeSym (name: Name; throughProcedure: BOOLEAN) : CARDINAL ; | |
2915 | VAR | |
2916 | pCall : PtrToCallFrame ; | |
2917 | ScopeSym, | |
2918 | ScopeId , | |
2919 | Sym : CARDINAL ; | |
2920 | BEGIN | |
2921 | (* DisplayScopes ; *) | |
2922 | ScopeId := ScopePtr ; | |
2923 | pCall := GetPcall(ScopeId) ; | |
2924 | ScopeSym := pCall^.Search ; | |
2925 | (* WriteString(' scope: ') ; WriteKey(GetSymName(ScopeSym)) ; *) | |
2926 | Sym := CheckScopeForSym(ScopeSym, name) ; | |
2927 | WHILE (ScopeId>0) AND (Sym=NulSym) AND TransparentScope(ScopeSym) AND | |
2928 | CanLookThroughScope(ScopeSym, throughProcedure) DO | |
2929 | DEC(ScopeId) ; | |
2930 | pCall := GetPcall(ScopeId) ; | |
2931 | ScopeSym := pCall^.Search ; | |
2932 | Sym := CheckScopeForSym(ScopeSym, name) ; | |
2933 | (* WriteString(' scope: ') ; WriteKey(GetSymName(ScopeSym)) *) | |
2934 | END ; | |
2935 | (* IF Sym#NulSym THEN WriteKey(GetSymName(Sym)) END ; WriteLn ; *) | |
2936 | RETURN( Sym ) | |
2937 | END GetScopeSym ; | |
2938 | ||
2939 | ||
2940 | (* | |
2941 | CheckScopeForSym - checks the scope, ScopeSym, for an identifier | |
2942 | of name, name. CheckScopeForSym checks for | |
2943 | the symbol by the GetLocalSym and also | |
2944 | ExamineUnresolvedTree. | |
2945 | *) | |
2946 | ||
2947 | PROCEDURE CheckScopeForSym (ScopeSym: CARDINAL; name: Name) : CARDINAL ; | |
2948 | VAR | |
2949 | Sym: CARDINAL ; | |
2950 | BEGIN | |
2951 | Sym := GetLocalSym(ScopeSym, name) ; | |
2952 | IF (Sym=NulSym) AND (IsModule(ScopeSym) OR IsDefImp(ScopeSym) OR | |
2953 | IsProcedure(ScopeSym)) | |
2954 | THEN | |
2955 | Sym := ExamineUnresolvedTree(ScopeSym, name) | |
2956 | END ; | |
2957 | RETURN( Sym ) | |
2958 | END CheckScopeForSym ; | |
2959 | ||
2960 | ||
2961 | (* | |
2962 | DisplayScopes - displays the scopes that will be searched to find | |
2963 | a requested symbol. | |
2964 | *) | |
2965 | ||
2966 | (* | |
2967 | PROCEDURE DisplayScopes ; | |
2968 | VAR | |
2969 | pCall: PtrToCallFrame ; | |
2970 | n : Name ; | |
2971 | i : CARDINAL ; | |
2972 | Sym : CARDINAL ; | |
2973 | BEGIN | |
2974 | i := ScopePtr ; | |
2975 | printf0('Displaying scopes\n') ; | |
2976 | WHILE i>=1 DO | |
2977 | pCall := GetPcall(i) ; | |
2978 | Sym := pCall^.Search ; | |
2979 | printf1('Symbol %4d', Sym) ; | |
2980 | IF Sym#NulSym | |
2981 | THEN | |
2982 | n := GetSymName(Sym) ; | |
2983 | printf1(' : name %a is ', n) ; | |
2984 | IF NOT TransparentScope(Sym) | |
2985 | THEN | |
2986 | printf0('not') | |
2987 | END ; | |
2988 | printf0(' transparent\n') | |
2989 | END ; | |
2990 | DEC(i) | |
2991 | END ; | |
2992 | printf0('\n') | |
2993 | END DisplayScopes ; | |
2994 | *) | |
2995 | ||
2996 | ||
2997 | (* | |
2998 | GetModuleScopeId - returns the scope index to the next module starting | |
2999 | at index, Id. | |
3000 | Id will either point to a null scope (NulSym) or | |
3001 | alternatively point to a Module or DefImp symbol. | |
3002 | *) | |
3003 | ||
3004 | PROCEDURE GetModuleScopeId (Id: CARDINAL) : CARDINAL ; | |
3005 | VAR | |
3006 | pCall: PtrToCallFrame ; | |
3007 | s : CARDINAL ; | |
3008 | BEGIN | |
3009 | pCall := GetPcall(Id) ; | |
3010 | s := pCall^.Search ; | |
3011 | WHILE (Id>0) AND (s#NulSym) AND | |
3012 | ((NOT IsModule(s)) AND | |
3013 | (NOT IsDefImp(s))) DO | |
3014 | DEC(Id) ; | |
3015 | pCall := GetPcall(Id) ; | |
3016 | s := pCall^.Search ; | |
3017 | END ; | |
3018 | RETURN( Id ) | |
3019 | END GetModuleScopeId ; | |
3020 | ||
3021 | ||
3022 | (* | |
3023 | GetVisibleSym - | |
3024 | *) | |
3025 | ||
3026 | PROCEDURE GetVisibleSym (name: Name) : CARDINAL ; | |
3027 | VAR | |
3028 | pCall: PtrToCallFrame ; | |
3029 | Sym, | |
3030 | i : CARDINAL ; | |
3031 | BEGIN | |
3032 | i := ScopePtr ; | |
3033 | WHILE i>=1 DO | |
3034 | pCall := GetPcall(i) ; | |
3035 | WITH pCall^ DO | |
3036 | IF Search=Main | |
3037 | THEN | |
3038 | RETURN( GetLocalSym(Main, name) ) | |
3039 | ELSE | |
3040 | IF IsEnumeration(Search) | |
3041 | THEN | |
3042 | Sym := GetLocalSym(Search, name) ; | |
3043 | IF Sym#NulSym | |
3044 | THEN | |
3045 | RETURN( Sym ) | |
3046 | END | |
3047 | END | |
3048 | END | |
3049 | END ; | |
3050 | DEC(i) | |
3051 | END ; | |
3052 | RETURN( NulSym ) | |
3053 | END GetVisibleSym ; | |
3054 | ||
3055 | ||
3056 | (* | |
3057 | IsAlreadyDeclaredSym - returns true if Sym has already been declared | |
3058 | in the current main scope. | |
3059 | *) | |
3060 | ||
3061 | PROCEDURE IsAlreadyDeclaredSym (name: Name) : BOOLEAN ; | |
3062 | VAR | |
3063 | pCall: PtrToCallFrame ; | |
3064 | i : CARDINAL ; | |
3065 | BEGIN | |
3066 | i := ScopePtr ; | |
3067 | WHILE i>=1 DO | |
3068 | pCall := GetPcall(i) ; | |
3069 | WITH pCall^ DO | |
3070 | IF Search=Main | |
3071 | THEN | |
3072 | RETURN( GetLocalSym(Main, name)#NulSym ) | |
3073 | ELSE | |
3074 | IF IsEnumeration(Search) AND (GetLocalSym(Search, name)#NulSym) | |
3075 | THEN | |
3076 | RETURN( TRUE ) | |
3077 | END | |
3078 | END | |
3079 | END ; | |
3080 | DEC(i) | |
3081 | END ; | |
3082 | RETURN( FALSE ) | |
3083 | END IsAlreadyDeclaredSym ; | |
3084 | ||
3085 | ||
3086 | (* | |
3087 | IsImplicityExported - returns TRUE if, Sym, is implicitly exported from module, ModSym. | |
3088 | ModSym must be a defimp symbol. | |
3089 | *) | |
3090 | ||
3091 | PROCEDURE IsImplicityExported (ModSym, Sym: CARDINAL) : BOOLEAN ; | |
3092 | VAR | |
3093 | type: CARDINAL ; | |
3094 | pSym: PtrToSymbol ; | |
3095 | BEGIN | |
3096 | IF IsDefImp(ModSym) AND IsFieldEnumeration(Sym) | |
3097 | THEN | |
3098 | pSym := GetPsym(ModSym) ; | |
3099 | type := SkipType(GetType(Sym)) ; | |
3100 | RETURN( IsItemInList(pSym^.DefImp.EnumerationScopeList, type) ) | |
3101 | END ; | |
3102 | RETURN( FALSE ) | |
3103 | END IsImplicityExported ; | |
3104 | ||
3105 | ||
3106 | (* | |
3107 | MakeProcedureCtorExtern - creates an extern ctor procedure | |
3108 | *) | |
3109 | ||
05652ac4 | 3110 | PROCEDURE MakeProcedureCtorExtern (tokenno: CARDINAL; libname, modulename: Name) : CARDINAL ; |
1eee94d3 GM |
3111 | VAR |
3112 | ctor: CARDINAL ; | |
3113 | BEGIN | |
05652ac4 | 3114 | ctor := MakeProcedure (tokenno, GenName (libname, '_M2_', modulename, '_ctor')) ; |
1eee94d3 GM |
3115 | PutExtern (ctor, TRUE) ; |
3116 | RETURN ctor | |
3117 | END MakeProcedureCtorExtern ; | |
3118 | ||
3119 | ||
3120 | (* | |
3121 | GenName - returns a new name consisting of pre, name, post concatenation. | |
3122 | *) | |
3123 | ||
05652ac4 | 3124 | PROCEDURE GenName (libname: Name; pre: ARRAY OF CHAR; name: Name; post: ARRAY OF CHAR) : Name ; |
1eee94d3 GM |
3125 | VAR |
3126 | str : String ; | |
3127 | result: Name ; | |
3128 | BEGIN | |
05652ac4 GM |
3129 | str := InitStringCharStar (KeyToCharStar (libname)) ; |
3130 | str := ConCat (str, Mark (InitString (pre))) ; | |
1eee94d3 GM |
3131 | str := ConCat (str, Mark (InitStringCharStar (KeyToCharStar (name)))) ; |
3132 | str := ConCat (str, InitString (post)) ; | |
3133 | result := makekey (string (str)) ; | |
3134 | str := KillString (str) ; | |
3135 | RETURN result | |
3136 | END GenName ; | |
3137 | ||
3138 | ||
3139 | (* | |
3140 | InitCtor - initialize the ModuleCtor fields to NulSym. | |
3141 | *) | |
3142 | ||
3143 | PROCEDURE InitCtor (VAR ctor: ModuleCtor) ; | |
3144 | BEGIN | |
3145 | ctor.ctor := NulSym ; | |
3146 | ctor.dep := NulSym ; | |
3147 | ctor.init := NulSym ; | |
3148 | ctor.fini := NulSym | |
3149 | END InitCtor ; | |
3150 | ||
3151 | ||
3152 | (* | |
3153 | MakeModuleCtor - for a defimp or module symbol create all the ctor | |
3154 | related procedures. | |
3155 | *) | |
3156 | ||
3157 | PROCEDURE MakeModuleCtor (moduleTok, beginTok, finallyTok: CARDINAL; | |
3158 | moduleSym: CARDINAL) ; | |
3159 | VAR | |
3160 | pSym: PtrToSymbol ; | |
3161 | BEGIN | |
3162 | Assert (IsDefImp (moduleSym) OR IsModule (moduleSym)) ; | |
3163 | pSym := GetPsym (moduleSym) ; | |
3164 | IF IsDefImp (moduleSym) | |
3165 | THEN | |
3166 | InitCtorFields (moduleTok, beginTok, finallyTok, | |
05652ac4 | 3167 | moduleSym, |
1eee94d3 GM |
3168 | pSym^.DefImp.ctors, GetSymName (moduleSym), |
3169 | FALSE, TRUE) | |
3170 | ELSE | |
3171 | InitCtorFields (moduleTok, beginTok, finallyTok, | |
05652ac4 | 3172 | moduleSym, |
1eee94d3 GM |
3173 | pSym^.Module.ctors, GetSymName (moduleSym), |
3174 | IsInnerModule (moduleSym), TRUE) | |
3175 | END | |
3176 | END MakeModuleCtor ; | |
3177 | ||
3178 | ||
3179 | (* | |
3180 | InitCtorFields - initialize the ModuleCtor fields. An inner module has no | |
3181 | ctor procedure. | |
3182 | *) | |
3183 | ||
3184 | PROCEDURE InitCtorFields (moduleTok, beginTok, finallyTok: CARDINAL; | |
05652ac4 | 3185 | moduleSym: CARDINAL; |
1eee94d3 GM |
3186 | VAR ctor: ModuleCtor; name: Name; |
3187 | inner, pub: BOOLEAN) ; | |
3188 | BEGIN | |
3189 | IF ScaffoldDynamic AND (NOT inner) | |
3190 | THEN | |
3191 | (* The ctor procedure must be public. *) | |
05652ac4 GM |
3192 | ctor.ctor := MakeProcedure (moduleTok, |
3193 | GenName (GetLibName (moduleSym), | |
3194 | "_M2_", name, "_ctor")) ; | |
1eee94d3 GM |
3195 | PutCtor (ctor.ctor, TRUE) ; |
3196 | Assert (pub) ; | |
3197 | PutPublic (ctor.ctor, pub) ; | |
3198 | PutExtern (ctor.ctor, NOT pub) ; | |
3199 | PutMonoName (ctor.ctor, TRUE) ; | |
3200 | (* The dep procedure is local to the module. *) | |
05652ac4 GM |
3201 | ctor.dep := MakeProcedure (moduleTok, |
3202 | GenName (GetLibName (moduleSym), | |
3203 | "_M2_", name, "_dep")) ; | |
1eee94d3 GM |
3204 | PutMonoName (ctor.dep, TRUE) |
3205 | ELSE | |
3206 | ctor.ctor := NulSym ; | |
3207 | ctor.dep := NulSym | |
3208 | END ; | |
3209 | (* The init/fini procedures must be public. *) | |
05652ac4 GM |
3210 | ctor.init := MakeProcedure (beginTok, |
3211 | GenName (GetLibName (moduleSym), | |
3212 | "_M2_", name, "_init")) ; | |
1eee94d3 GM |
3213 | PutPublic (ctor.init, pub) ; |
3214 | PutExtern (ctor.init, NOT pub) ; | |
3215 | PutMonoName (ctor.init, NOT inner) ; | |
3216 | DeclareArgEnvParams (beginTok, ctor.init) ; | |
05652ac4 GM |
3217 | ctor.fini := MakeProcedure (finallyTok, |
3218 | GenName (GetLibName (moduleSym), | |
3219 | "_M2_", name, "_fini")) ; | |
1eee94d3 GM |
3220 | PutPublic (ctor.fini, pub) ; |
3221 | PutExtern (ctor.fini, NOT pub) ; | |
3222 | PutMonoName (ctor.fini, NOT inner) ; | |
3223 | DeclareArgEnvParams (beginTok, ctor.fini) | |
3224 | END InitCtorFields ; | |
3225 | ||
3226 | ||
3227 | (* | |
3228 | GetModuleCtors - mod can be a DefImp or Module symbol. ctor, init and fini | |
3229 | are assigned for this module. An inner module ctor value will | |
3230 | be NulSym. | |
3231 | *) | |
3232 | ||
3233 | PROCEDURE GetModuleCtors (mod: CARDINAL; VAR ctor, init, fini, dep: CARDINAL) ; | |
3234 | VAR | |
3235 | pSym : PtrToSymbol ; | |
3236 | BEGIN | |
3237 | pSym := GetPsym (mod) ; | |
3238 | WITH pSym^ DO | |
3239 | CASE SymbolType OF | |
3240 | ||
3241 | ModuleSym: ctor := Module.ctors.ctor ; | |
3242 | init := Module.ctors.init ; | |
3243 | fini := Module.ctors.fini ; | |
3244 | dep := Module.ctors.dep | | |
3245 | DefImpSym: ctor := DefImp.ctors.ctor ; | |
3246 | init := DefImp.ctors.init ; | |
3247 | fini := DefImp.ctors.fini ; | |
3248 | dep := DefImp.ctors.dep | |
3249 | ||
3250 | ELSE | |
3251 | InternalError ('expecting Module or DefImp symbol') | |
3252 | END | |
3253 | END | |
3254 | END GetModuleCtors ; | |
3255 | ||
3256 | ||
3257 | (* | |
3258 | MakeModule - creates a module sym with ModuleName. It returns the | |
3259 | symbol index. | |
3260 | *) | |
3261 | ||
3262 | PROCEDURE MakeModule (tok: CARDINAL; ModuleName: Name) : CARDINAL ; | |
3263 | VAR | |
3264 | pSym : PtrToSymbol ; | |
3265 | pCall: PtrToCallFrame ; | |
3266 | Sym : CARDINAL ; | |
3267 | BEGIN | |
3268 | (* | |
3269 | Make a new symbol since we are at the outer scope level. | |
3270 | DeclareSym examines the current scope level for any symbols | |
3271 | that have the correct name, but are yet undefined. | |
3272 | Therefore we must not call DeclareSym but create a symbol | |
3273 | directly. | |
3274 | *) | |
3275 | NewSym(Sym) ; | |
3276 | pSym := GetPsym(Sym) ; | |
3277 | WITH pSym^ DO | |
3278 | SymbolType := ModuleSym ; | |
3279 | WITH Module DO | |
3280 | name := ModuleName ; (* Index into name array, name *) | |
3281 | (* of record field. *) | |
05652ac4 | 3282 | libname := NulName ; (* Library association. *) |
1eee94d3 GM |
3283 | InitCtor (ctors) ; (* Init all ctor functions. *) |
3284 | InitList(ModListOfDep) ; (* Vector of SymDependency. *) | |
3285 | InitTree(LocalSymbols) ; (* The LocalSymbols hold all the *) | |
3286 | (* variables declared local to *) | |
3287 | (* the block. It contains the *) | |
3288 | (* FROM _ IMPORT x, y, x ; *) | |
3289 | (* IMPORT A ; *) | |
3290 | (* and also *) | |
3291 | (* MODULE WeAreHere ; *) | |
3292 | (* x y z visiable by localsym *) | |
3293 | (* MODULE Inner ; *) | |
3294 | (* EXPORT x, y, z ; *) | |
3295 | (* END Inner ; *) | |
3296 | (* END WeAreHere. *) | |
3297 | InitTree(ExportTree) ; (* Holds all the exported *) | |
3298 | (* identifiers. *) | |
3299 | (* This tree may be *) | |
3300 | (* deleted at the end of Pass 1. *) | |
3301 | InitTree(ImportTree) ; (* Contains all IMPORTed *) | |
3302 | (* identifiers. *) | |
3303 | InitList(IncludeList) ; (* Contains all included symbols *) | |
3304 | (* which are included by *) | |
3305 | (* IMPORT modulename ; *) | |
3306 | (* modulename.Symbol *) | |
3307 | InitTree(ExportUndeclared) ; (* ExportUndeclared contains all *) | |
3308 | (* the identifiers which were *) | |
3309 | (* exported but have not yet *) | |
3310 | (* been declared. *) | |
3311 | InitList(EnumerationScopeList) ; (* Enumeration scope list which *) | |
3312 | (* contains a list of all *) | |
3313 | (* enumerations which are *) | |
3314 | (* visable within this scope. *) | |
3315 | (* Outer Module. *) | |
3316 | InitTree(NamedObjects) ; (* Names of all items declared. *) | |
3317 | InitTree(NamedImports) ; (* Names of items imported. *) | |
3318 | InitTree(WhereImported) ; (* Sym to TokenNo where import *) | |
3319 | (* occurs. Error message use. *) | |
3320 | Priority := NulSym ; (* Priority of the module. This *) | |
3321 | (* is an index to a constant. *) | |
3322 | InitTree(Unresolved) ; (* All symbols currently *) | |
3323 | (* unresolved in this module. *) | |
3324 | StartQuad := 0 ; (* Signify the initialization *) | |
3325 | (* code. *) | |
3326 | EndQuad := 0 ; (* EndQuad should point to a *) | |
3327 | (* goto quad. *) | |
3328 | StartFinishQuad := 0 ; (* Signify the finalization *) | |
3329 | (* code. *) | |
3330 | EndFinishQuad := 0 ; (* should point to a finish *) | |
3331 | FinallyFunction := NIL ; (* The GCC function for finally *) | |
3332 | ExceptionFinally := FALSE ; (* does it have an exception? *) | |
3333 | ExceptionBlock := FALSE ; (* does it have an exception? *) | |
3334 | ModLink := GetLink () ; (* Is this parsed for linkage? *) | |
3335 | Builtin := FALSE ; (* Is the module builtin? *) | |
3336 | InitList(ListOfVars) ; (* List of variables in this *) | |
3337 | (* scope. *) | |
3338 | InitList(ListOfProcs) ; (* List of all procedures *) | |
3339 | (* declared within this module. *) | |
3340 | InitList(ListOfModules) ; (* List of all inner modules. *) | |
3341 | InitWhereDeclaredTok(tok, At) ; (* Where symbol declared. *) | |
3342 | InitWhereFirstUsedTok(tok, At) ; (* Where symbol first used. *) | |
3343 | pCall := GetPcall(ScopePtr) ; | |
3344 | IF pCall^.Main=GetBaseModule() | |
3345 | THEN | |
3346 | Scope := NulSym | |
3347 | ELSE | |
3348 | Scope := pCall^.Main | |
3349 | END ; | |
3350 | errorScope := GetCurrentErrorScope () ; (* Title error scope. *) | |
3351 | END | |
3352 | END ; | |
3353 | PutSymKey(ModuleTree, ModuleName, Sym) ; | |
3354 | RETURN Sym | |
3355 | END MakeModule ; | |
3356 | ||
3357 | ||
3358 | (* | |
3359 | PutModLink - assigns link to module sym. | |
3360 | *) | |
3361 | ||
3362 | PROCEDURE PutModLink (sym: CARDINAL; link: BOOLEAN) ; | |
3363 | VAR | |
3364 | pSym: PtrToSymbol ; | |
3365 | BEGIN | |
3366 | IF IsModule (sym) | |
3367 | THEN | |
3368 | pSym := GetPsym (sym) ; | |
3369 | pSym^.Module.ModLink := link | |
3370 | ELSIF IsDefImp (sym) | |
3371 | THEN | |
3372 | pSym := GetPsym (sym) ; | |
3373 | pSym^.DefImp.ModLink := link | |
3374 | ELSE | |
3375 | InternalError ('expecting a DefImp or Module symbol') | |
3376 | END | |
3377 | END PutModLink ; | |
3378 | ||
3379 | ||
3380 | (* | |
3381 | IsModLink - returns the ModLink value associated with the module symbol. | |
3382 | *) | |
3383 | ||
3384 | PROCEDURE IsModLink (sym: CARDINAL) : BOOLEAN ; | |
3385 | VAR | |
3386 | pSym: PtrToSymbol ; | |
3387 | BEGIN | |
3388 | IF IsModule (sym) | |
3389 | THEN | |
3390 | pSym := GetPsym (sym) ; | |
3391 | RETURN pSym^.Module.ModLink | |
3392 | ELSIF IsDefImp (sym) | |
3393 | THEN | |
3394 | pSym := GetPsym (sym) ; | |
3395 | RETURN pSym^.DefImp.ModLink | |
3396 | ELSE | |
3397 | InternalError ('expecting a DefImp or Module symbol') | |
3398 | END | |
3399 | END IsModLink ; | |
3400 | ||
3401 | ||
3402 | (* | |
3403 | PutDefLink - assigns link to the definition module sym. | |
3404 | *) | |
3405 | ||
3406 | PROCEDURE PutDefLink (sym: CARDINAL; link: BOOLEAN) ; | |
3407 | VAR | |
3408 | pSym: PtrToSymbol ; | |
3409 | BEGIN | |
3410 | IF IsDefImp (sym) | |
3411 | THEN | |
3412 | pSym := GetPsym (sym) ; | |
3413 | pSym^.DefImp.DefLink := link | |
3414 | ELSE | |
3415 | InternalError ('expecting a DefImp symbol') | |
3416 | END | |
3417 | END PutDefLink ; | |
3418 | ||
3419 | ||
3420 | (* | |
3421 | IsDefLink - returns the DefLink value associated with the definition module symbol. | |
3422 | *) | |
3423 | ||
3424 | PROCEDURE IsDefLink (sym: CARDINAL) : BOOLEAN ; | |
3425 | VAR | |
3426 | pSym: PtrToSymbol ; | |
3427 | BEGIN | |
3428 | IF IsDefImp (sym) | |
3429 | THEN | |
3430 | pSym := GetPsym (sym) ; | |
3431 | RETURN pSym^.DefImp.DefLink | |
3432 | ELSE | |
3433 | InternalError ('expecting a DefImp symbol') | |
3434 | END | |
3435 | END IsDefLink ; | |
3436 | ||
3437 | ||
3438 | (* | |
3439 | GetLink - returns TRUE if the current module is only used for linkage. | |
3440 | *) | |
3441 | ||
3442 | PROCEDURE GetLink () : BOOLEAN ; | |
3443 | VAR | |
3444 | OuterModule: CARDINAL ; | |
3445 | BEGIN | |
3446 | OuterModule := GetCurrentModule () ; | |
3447 | IF OuterModule # NulSym | |
3448 | THEN | |
3449 | IF CompilingDefinitionModule () | |
3450 | THEN | |
3451 | RETURN IsDefLink (OuterModule) | |
3452 | ELSE | |
3453 | RETURN IsModLink (OuterModule) | |
3454 | END | |
3455 | END ; | |
3456 | (* Default is that the module is for compiling. *) | |
3457 | RETURN FALSE | |
3458 | END GetLink ; | |
3459 | ||
3460 | ||
3461 | (* | |
3462 | IsModuleBuiltin - returns TRUE if the module is a builtin module. | |
3463 | (For example _BaseTypes). | |
3464 | *) | |
3465 | ||
3466 | PROCEDURE IsModuleBuiltin (sym: CARDINAL) : BOOLEAN ; | |
3467 | VAR | |
3468 | pSym: PtrToSymbol ; | |
3469 | BEGIN | |
3470 | IF IsDefImp (sym) | |
3471 | THEN | |
3472 | pSym := GetPsym (sym) ; | |
3473 | RETURN pSym^.DefImp.Builtin | |
3474 | ELSIF IsModule (sym) | |
3475 | THEN | |
3476 | pSym := GetPsym (sym) ; | |
3477 | RETURN pSym^.Module.Builtin | |
3478 | END ; | |
3479 | RETURN FALSE | |
3480 | END IsModuleBuiltin ; | |
3481 | ||
3482 | ||
3483 | (* | |
3484 | PutModuleBuiltin - sets the Builtin flag to value. | |
3485 | Currently the procedure expects sym to be a DefImp | |
3486 | module only. | |
3487 | *) | |
3488 | ||
3489 | PROCEDURE PutModuleBuiltin (sym: CARDINAL; value: BOOLEAN) ; | |
3490 | VAR | |
3491 | pSym: PtrToSymbol ; | |
3492 | BEGIN | |
3493 | IF IsDefImp (sym) | |
3494 | THEN | |
3495 | pSym := GetPsym (sym) ; | |
3496 | pSym^.DefImp.Builtin := value | |
3497 | ELSIF IsModule (sym) | |
3498 | THEN | |
3499 | pSym := GetPsym (sym) ; | |
3500 | pSym^.Module.Builtin := value | |
3501 | ELSE | |
3502 | InternalError ('expecting Module or DefImp symbol') | |
3503 | END | |
3504 | END PutModuleBuiltin ; | |
3505 | ||
3506 | ||
3507 | (* | |
3508 | AddModuleToParent - adds symbol, Sym, to module, Parent. | |
3509 | *) | |
3510 | ||
3511 | PROCEDURE AddModuleToParent (Sym: CARDINAL; Parent: CARDINAL) ; | |
3512 | VAR | |
3513 | pSym: PtrToSymbol ; | |
3514 | BEGIN | |
3515 | pSym := GetPsym(Parent) ; | |
3516 | WITH pSym^ DO | |
3517 | CASE SymbolType OF | |
3518 | ||
3519 | DefImpSym : PutItemIntoList(DefImp.ListOfModules, Sym) | | |
3520 | ModuleSym : PutItemIntoList(Module.ListOfModules, Sym) | | |
3521 | ProcedureSym: PutItemIntoList(Procedure.ListOfModules, Sym) | |
3522 | ||
3523 | ELSE | |
3524 | InternalError ('expecting DefImp or Module symbol') | |
3525 | END | |
3526 | END | |
3527 | END AddModuleToParent ; | |
3528 | ||
3529 | ||
3530 | (* | |
3531 | MakeInnerModule - creates an inner module sym with ModuleName. It returns the | |
3532 | symbol index. | |
3533 | *) | |
3534 | ||
3535 | PROCEDURE MakeInnerModule (tok: CARDINAL; ModuleName: Name) : CARDINAL ; | |
3536 | VAR | |
3537 | pSym: PtrToSymbol ; | |
3538 | Sym : CARDINAL ; | |
3539 | BEGIN | |
3540 | Sym := DeclareSym (tok, ModuleName) ; | |
3541 | IF NOT IsError(Sym) | |
3542 | THEN | |
3543 | pSym := GetPsym(Sym) ; | |
3544 | WITH pSym^ DO | |
3545 | SymbolType := ModuleSym ; | |
3546 | WITH Module DO | |
3547 | name := ModuleName ; (* Index into name array, name *) | |
3548 | (* of record field. *) | |
05652ac4 | 3549 | libname := NulName ; (* Library association. *) |
1eee94d3 GM |
3550 | InitCtor (ctors) ; (* Init all ctor functions. *) |
3551 | InitTree(LocalSymbols) ; (* The LocalSymbols hold all the *) | |
3552 | (* variables declared local to *) | |
3553 | (* the block. It contains the *) | |
3554 | (* FROM _ IMPORT x, y, x ; *) | |
3555 | (* IMPORT A ; *) | |
3556 | (* and also *) | |
3557 | (* MODULE WeAreHere ; *) | |
3558 | (* x y z visiable by localsym *) | |
3559 | (* MODULE Inner ; *) | |
3560 | (* EXPORT x, y, z ; *) | |
3561 | (* END Inner ; *) | |
3562 | (* END WeAreHere. *) | |
3563 | InitTree(ExportTree) ; (* Holds all the exported *) | |
3564 | (* identifiers. *) | |
3565 | (* This tree may be *) | |
3566 | (* deleted at the end of Pass 1. *) | |
3567 | InitTree(ImportTree) ; (* Contains all IMPORTed *) | |
3568 | (* identifiers. *) | |
3569 | InitList(IncludeList) ; (* Contains all included symbols *) | |
3570 | (* which are included by *) | |
3571 | (* IMPORT modulename ; *) | |
3572 | (* modulename.Symbol *) | |
3573 | InitTree(ExportUndeclared) ; (* ExportUndeclared contains all *) | |
3574 | (* the identifiers which were *) | |
3575 | (* exported but have not yet *) | |
3576 | (* been declared. *) | |
3577 | InitList(EnumerationScopeList) ;(* Enumeration scope list which *) | |
3578 | (* contains a list of all *) | |
3579 | (* enumerations which are *) | |
3580 | (* visable within this scope. *) | |
3581 | InitTree(NamedObjects) ; (* Names of all items declared. *) | |
3582 | InitTree(NamedImports) ; (* Names of items imported. *) | |
3583 | InitTree(WhereImported) ; (* Sym to TokenNo where import *) | |
3584 | (* occurs. Error message use. *) | |
3585 | Priority := NulSym ; (* Priority of the module. This *) | |
3586 | (* is an index to a constant. *) | |
3587 | InitTree(Unresolved) ; (* All symbols currently *) | |
3588 | (* unresolved in this module. *) | |
3589 | StartQuad := 0 ; (* Signify the initialization *) | |
3590 | (* code. *) | |
3591 | EndQuad := 0 ; (* EndQuad should point to a *) | |
3592 | (* goto quad. *) | |
3593 | StartFinishQuad := 0 ; (* Signify the finalization *) | |
3594 | (* code. *) | |
3595 | EndFinishQuad := 0 ; (* should point to a finish *) | |
3596 | FinallyFunction := NIL ; (* The GCC function for finally *) | |
3597 | ExceptionFinally := FALSE ; (* does it have an exception? *) | |
3598 | ExceptionBlock := FALSE ; (* does it have an exception? *) | |
3599 | ModLink := GetLink () ; (* Is this parsed for linkage? *) | |
3600 | InitList(ListOfVars) ; (* List of variables in this *) | |
3601 | (* scope. *) | |
3602 | InitList(ListOfProcs) ; (* List of all procedures *) | |
3603 | (* declared within this module. *) | |
3604 | InitList(ListOfModules) ; (* List of all inner modules. *) | |
3605 | InitWhereDeclaredTok(tok, At) ; (* Where symbol declared. *) | |
3606 | InitWhereFirstUsedTok(tok, At) ; (* Where symbol first used. *) | |
3607 | IF GetCurrentScope()=GetBaseModule() | |
3608 | THEN | |
3609 | Scope := NulSym | |
3610 | ELSE | |
3611 | Scope := GetCurrentScope() ; | |
3612 | AddModuleToParent(Sym, Scope) | |
3613 | END ; | |
3614 | errorScope := GetCurrentErrorScope () ; (* Title error scope. *) | |
3615 | END ; | |
3616 | END ; | |
3617 | AddSymToScope(Sym, ModuleName) | |
3618 | END ; | |
3619 | RETURN Sym | |
3620 | END MakeInnerModule ; | |
3621 | ||
3622 | ||
3623 | (* | |
3624 | MakeDefImp - creates a definition and implementation module sym | |
3625 | with name DefImpName. It returns the symbol index. | |
3626 | *) | |
3627 | ||
3628 | PROCEDURE MakeDefImp (tok: CARDINAL; DefImpName: Name) : CARDINAL ; | |
3629 | VAR | |
3630 | pSym: PtrToSymbol ; | |
3631 | Sym : CARDINAL ; | |
3632 | BEGIN | |
3633 | (* Make a new symbol since we are at the outer scope level. *) | |
3634 | (* We cannot use DeclareSym as it examines the current scope *) | |
3635 | (* for any symbols which have the correct name, but are yet *) | |
3636 | (* undefined. *) | |
3637 | ||
3638 | NewSym(Sym) ; | |
3639 | pSym := GetPsym(Sym) ; | |
3640 | WITH pSym^ DO | |
3641 | SymbolType := DefImpSym ; | |
3642 | WITH DefImp DO | |
3643 | name := DefImpName ; (* Index into name array, name *) | |
3644 | (* of record field. *) | |
05652ac4 | 3645 | libname := NulName ; (* Library association. *) |
1eee94d3 GM |
3646 | InitCtor (ctors) ; |
3647 | (* Init all ctor functions. *) | |
3648 | InitList(DefListOfDep) ; (* Vector of SymDependency. *) | |
3649 | InitList(ModListOfDep) ; (* Vector of SymDependency. *) | |
3650 | InitTree(ExportQualifiedTree) ; | |
3651 | (* Holds all the EXPORT *) | |
3652 | (* QUALIFIED identifiers. *) | |
3653 | (* This tree may be *) | |
3654 | (* deleted at the end of Pass 1. *) | |
3655 | InitTree(ExportUnQualifiedTree) ; | |
3656 | (* Holds all the EXPORT *) | |
3657 | (* UNQUALIFIED identifiers. *) | |
3658 | (* This tree may be *) | |
3659 | (* deleted at the end of Pass 1. *) | |
3660 | InitTree(ExportRequest) ; (* Contains all identifiers that *) | |
3661 | (* have been requested by other *) | |
3662 | (* modules before this module *) | |
3663 | (* declared its export list. *) | |
3664 | (* This tree should be empty at *) | |
3665 | (* the end of the compilation. *) | |
3666 | (* Each time a symbol is *) | |
3667 | (* exported it is removed from *) | |
3668 | (* this list. *) | |
3669 | InitTree(ImportTree) ; (* Contains all IMPORTed *) | |
3670 | (* identifiers. *) | |
3671 | InitList(IncludeList) ; (* Contains all included symbols *) | |
3672 | (* which are included by *) | |
3673 | (* IMPORT modulename ; *) | |
3674 | (* modulename.Symbol *) | |
3675 | InitList(DefIncludeList) ; (* Contains all included symbols *) | |
3676 | (* which are included by *) | |
3677 | (* IMPORT modulename ; *) | |
3678 | (* in the definition module only *) | |
3679 | InitTree(ExportUndeclared) ; (* ExportUndeclared contains all *) | |
3680 | (* the identifiers which were *) | |
3681 | (* exported but have not yet *) | |
3682 | (* been declared. *) | |
3683 | InitTree(NeedToBeImplemented) ; | |
3684 | (* NeedToBeImplemented contains *) | |
3685 | (* the identifiers which have *) | |
3686 | (* been exported and declared *) | |
3687 | (* but have not yet been *) | |
3688 | (* implemented. *) | |
3689 | InitTree(LocalSymbols) ; (* The LocalSymbols hold all the *) | |
3690 | (* variables declared local to *) | |
3691 | (* the block. It contains the *) | |
3692 | (* IMPORT r ; *) | |
3693 | (* FROM _ IMPORT x, y, x ; *) | |
3694 | (* and also *) | |
3695 | (* MODULE WeAreHere ; *) | |
3696 | (* x y z visiable by localsym *) | |
3697 | (* MODULE Inner ; *) | |
3698 | (* EXPORT x, y, z ; *) | |
3699 | (* END Inner ; *) | |
3700 | (* END WeAreHere. *) | |
3701 | InitList(EnumerationScopeList) ; | |
3702 | (* Enumeration scope list which *) | |
3703 | (* contains a list of all *) | |
3704 | (* enumerations which are *) | |
3705 | (* visable within this scope. *) | |
3706 | InitTree(NamedObjects) ; (* names of all items declared. *) | |
3707 | InitTree(NamedImports) ; (* Names of items imported. *) | |
3708 | InitTree(WhereImported) ; (* Sym to TokenNo where import *) | |
3709 | (* occurs. Error message use. *) | |
3710 | Priority := NulSym ; (* Priority of the module. This *) | |
3711 | (* is an index to a constant. *) | |
3712 | InitTree(Unresolved) ; (* All symbols currently *) | |
3713 | (* unresolved in this module. *) | |
3714 | StartQuad := 0 ; (* Signify the initialization *) | |
3715 | (* code. *) | |
3716 | EndQuad := 0 ; (* EndQuad should point to a *) | |
3717 | (* goto quad. *) | |
3718 | StartFinishQuad := 0 ; (* Signify the finalization *) | |
3719 | (* code. *) | |
3720 | EndFinishQuad := 0 ; (* should point to a finish *) | |
3721 | FinallyFunction := NIL ; (* The GCC function for finally *) | |
3722 | ExceptionFinally := FALSE ; (* does it have an exception? *) | |
3723 | ExceptionBlock := FALSE ; (* does it have an exception? *) | |
3724 | ContainsHiddenType := FALSE ;(* True if this module *) | |
3725 | (* implements a hidden type. *) | |
3726 | ContainsBuiltin := FALSE ; (* Does module define a builtin *) | |
3727 | (* procedure? *) | |
3728 | ForC := FALSE ; (* Is it a definition for "C" *) | |
3729 | NeedExportList := FALSE ; (* Must user supply export list? *) | |
3730 | DefLink := GetLink () ; (* Is the def/mod file only *) | |
3731 | ModLink := GetLink () ; (* parsed for linkage? *) | |
3732 | Builtin := FALSE ; (* Is the module builtin? *) | |
3733 | InitList(ListOfVars) ; (* List of variables in this *) | |
3734 | (* scope. *) | |
3735 | InitList(ListOfProcs) ; (* List of all procedures *) | |
3736 | (* declared within this module. *) | |
3737 | InitList(ListOfModules) ; (* List of all inner modules. *) | |
3738 | InitWhereDeclaredTok(tok, At) ; (* Where symbol declared. *) | |
3739 | InitWhereFirstUsedTok(tok, At) ; (* Where symbol first used. *) | |
3740 | errorScope := GetCurrentErrorScope () ; (* Title error scope. *) | |
3741 | END | |
3742 | END ; | |
3743 | PutSymKey(ModuleTree, DefImpName, Sym) ; | |
3744 | RETURN Sym | |
3745 | END MakeDefImp ; | |
3746 | ||
3747 | ||
05652ac4 GM |
3748 | (* |
3749 | PutLibName - places libname into defimp or module sym. | |
3750 | *) | |
3751 | ||
3752 | PROCEDURE PutLibName (sym: CARDINAL; libname: Name) ; | |
3753 | VAR | |
3754 | pSym: PtrToSymbol ; | |
3755 | BEGIN | |
3756 | Assert (IsModule (sym) OR IsDefImp (sym)) ; | |
3757 | pSym := GetPsym (sym) ; | |
3758 | WITH pSym^ DO | |
3759 | CASE SymbolType OF | |
3760 | ||
3761 | DefImpSym: DefImp.libname := libname | | |
3762 | ModuleSym: Module.libname := libname | |
3763 | ||
3764 | ELSE | |
3765 | InternalError ('expecting DefImp or Module symbol') | |
3766 | END | |
3767 | END | |
3768 | END PutLibName ; | |
3769 | ||
3770 | ||
3771 | (* | |
3772 | GetLibName - returns libname associated with a defimp or module sym. | |
3773 | *) | |
3774 | ||
3775 | PROCEDURE GetLibName (sym: CARDINAL) : Name ; | |
3776 | VAR | |
3777 | pSym: PtrToSymbol ; | |
3778 | BEGIN | |
3779 | Assert (IsModule (sym) OR IsDefImp (sym)) ; | |
3780 | pSym := GetPsym (sym) ; | |
3781 | WITH pSym^ DO | |
3782 | CASE SymbolType OF | |
3783 | ||
3784 | DefImpSym: RETURN DefImp.libname | | |
3785 | ModuleSym: RETURN Module.libname | |
3786 | ||
3787 | ELSE | |
3788 | InternalError ('expecting DefImp or Module symbol') | |
3789 | END | |
3790 | END | |
3791 | END GetLibName ; | |
3792 | ||
3793 | ||
1eee94d3 GM |
3794 | (* |
3795 | PutProcedureExternPublic - if procedure is not NulSym set extern | |
3796 | and public booleans. | |
3797 | *) | |
3798 | ||
3799 | PROCEDURE PutProcedureExternPublic (procedure: CARDINAL; extern, pub: BOOLEAN) ; | |
3800 | BEGIN | |
3801 | IF procedure # NulSym | |
3802 | THEN | |
3803 | PutExtern (procedure, extern) ; | |
3804 | PutPublic (procedure, pub) | |
3805 | END | |
3806 | END PutProcedureExternPublic ; | |
3807 | ||
3808 | ||
3809 | (* | |
3810 | PutCtorExtern - | |
3811 | *) | |
3812 | ||
3813 | PROCEDURE PutCtorExtern (tok: CARDINAL; sym: CARDINAL; | |
3814 | VAR ctor: ModuleCtor; extern: BOOLEAN) ; | |
3815 | BEGIN | |
3816 | (* If the ctor does not exist then make it extern/ (~extern) public. *) | |
3817 | IF ctor.ctor = NulSym | |
3818 | THEN | |
05652ac4 | 3819 | ctor.ctor := MakeProcedure (tok, GenName (GetLibName (sym), "_M2_", GetSymName (sym), "_ctor")) ; |
1eee94d3 GM |
3820 | PutMonoName (ctor.ctor, TRUE) |
3821 | END ; | |
3822 | PutProcedureExternPublic (ctor.ctor, extern, NOT extern) ; | |
3823 | PutCtor (ctor.ctor, TRUE) ; | |
3824 | (* If the ctor does not exist then make it extern/ (~extern) public. *) | |
3825 | IF ctor.dep = NulSym | |
3826 | THEN | |
05652ac4 | 3827 | ctor.dep := MakeProcedure (tok, GenName (GetLibName (sym), "_M2_", GetSymName (sym), "_dep")) ; |
1eee94d3 GM |
3828 | PutMonoName (ctor.dep, TRUE) |
3829 | END ; | |
3830 | PutProcedureExternPublic (ctor.dep, extern, NOT extern) ; | |
3831 | (* If init/fini do not exist then create them. *) | |
3832 | IF ctor.init = NulSym | |
3833 | THEN | |
05652ac4 | 3834 | ctor.init := MakeProcedure (tok, GenName (GetLibName (sym), "_M2_", GetSymName (sym), "_init")) ; |
1eee94d3 GM |
3835 | DeclareArgEnvParams (tok, ctor.init) ; |
3836 | PutMonoName (ctor.init, NOT IsInnerModule (sym)) | |
3837 | END ; | |
3838 | PutProcedureExternPublic (ctor.init, extern, NOT extern) ; | |
3839 | IF ctor.fini = NulSym | |
3840 | THEN | |
05652ac4 | 3841 | ctor.fini := MakeProcedure (tok, GenName (GetLibName (sym), "_M2_", GetSymName (sym), "_fini")) ; |
1eee94d3 GM |
3842 | DeclareArgEnvParams (tok, ctor.fini) ; |
3843 | PutMonoName (ctor.fini, NOT IsInnerModule (sym)) | |
3844 | END ; | |
3845 | PutProcedureExternPublic (ctor.fini, extern, NOT extern) | |
3846 | END PutCtorExtern ; | |
3847 | ||
3848 | ||
3849 | (* | |
3850 | PutModuleCtorExtern - for every ctor related procedure in module sym. | |
3851 | Make it external. It will create any missing | |
3852 | init/fini procedures but not any missing dep/ctor | |
3853 | procedures. | |
3854 | *) | |
3855 | ||
3856 | PROCEDURE PutModuleCtorExtern (tok: CARDINAL; sym: CARDINAL; external: BOOLEAN) ; | |
3857 | VAR | |
3858 | pSym: PtrToSymbol ; | |
3859 | BEGIN | |
3860 | Assert (IsModule (sym) OR IsDefImp (sym)) ; | |
3861 | pSym := GetPsym (sym) ; | |
3862 | WITH pSym^ DO | |
3863 | CASE SymbolType OF | |
3864 | ||
3865 | DefImpSym: PutCtorExtern (tok, sym, DefImp.ctors, external) | | |
3866 | ModuleSym: PutCtorExtern (tok, sym, Module.ctors, external) | |
3867 | ||
3868 | ELSE | |
3869 | InternalError ('expecting DefImp or Module symbol') | |
3870 | END | |
3871 | END | |
3872 | END PutModuleCtorExtern ; | |
3873 | ||
3874 | ||
3875 | (* | |
3876 | MakeProcedure - creates a procedure sym with name. It returns | |
3877 | the symbol index. | |
3878 | *) | |
3879 | ||
3880 | PROCEDURE MakeProcedure (tok: CARDINAL; ProcedureName: Name) : CARDINAL ; | |
3881 | VAR | |
3882 | pSym: PtrToSymbol ; | |
3883 | Sym : CARDINAL ; | |
3884 | BEGIN | |
3885 | Sym := DeclareSym(tok, ProcedureName) ; | |
3886 | IF NOT IsError(Sym) | |
3887 | THEN | |
3888 | pSym := GetPsym(Sym) ; | |
3889 | WITH pSym^ DO | |
3890 | SymbolType := ProcedureSym ; | |
3891 | WITH Procedure DO | |
3892 | name := ProcedureName ; | |
3893 | InitList(ListOfParam) ; (* Contains a list of all the *) | |
3894 | (* parameters in this procedure. *) | |
3895 | ParamDefined := FALSE ; (* Have the parameters been *) | |
3896 | (* defined yet? *) | |
3897 | DefinedInDef := FALSE ; (* Were the parameters defined *) | |
3898 | (* in the Definition module? *) | |
3899 | (* Note that this depends on *) | |
3900 | (* whether the compiler has read *) | |
3901 | (* the .def or .mod first. *) | |
3902 | (* The second occurence is *) | |
3903 | (* compared to the first. *) | |
3904 | DefinedInImp := FALSE ; (* Were the parameters defined *) | |
3905 | (* in the Implementation module? *) | |
3906 | (* Note that this depends on *) | |
3907 | (* whether the compiler has read *) | |
3908 | (* the .def or .mod first. *) | |
3909 | (* The second occurence is *) | |
3910 | (* compared to the first. *) | |
3911 | HasVarArgs := FALSE ; (* Does the procedure use ... ? *) | |
3912 | HasOptArg := FALSE ; (* Does this procedure use [ ] ? *) | |
3913 | OptArgInit := NulSym ; (* The optarg initial value. *) | |
3914 | IsBuiltin := FALSE ; (* Was it declared __BUILTIN__ ? *) | |
3915 | BuiltinName := NulName ; (* name of equivalent builtin *) | |
3916 | IsInline := FALSE ; (* Was is declared __INLINE__ ? *) | |
94673a12 | 3917 | IsNoReturn := FALSE ; (* Declared attribute noreturn ? *) |
1eee94d3 GM |
3918 | ReturnOptional := FALSE ; (* Is the return value optional? *) |
3919 | IsExtern := FALSE ; (* Make this procedure external. *) | |
3920 | IsPublic := FALSE ; (* Make this procedure visible. *) | |
3921 | IsCtor := FALSE ; (* Is this procedure a ctor? *) | |
3922 | IsMonoName := FALSE ; (* Overrides module name prefix. *) | |
3923 | Scope := GetCurrentScope() ; (* Scope of procedure. *) | |
3924 | InitTree(Unresolved) ; (* All symbols currently *) | |
3925 | (* unresolved in this procedure. *) | |
3926 | ScopeQuad := 0 ; (* Index into list of quads, *) | |
3927 | StartQuad := 0 ; (* defining the scope, start and *) | |
3928 | EndQuad := 0 ; (* end of the procedure. *) | |
3929 | Reachable := FALSE ; (* Procedure not known to be *) | |
3930 | (* reachable. *) | |
3931 | SavePriority := FALSE ; (* Does procedure need to save *) | |
3932 | (* and restore interrupts? *) | |
3933 | ReturnType := NulSym ; (* Not a function yet! *) | |
3934 | Offset := 0 ; (* Location of procedure. *) | |
3935 | InitTree(LocalSymbols) ; | |
3936 | InitList(EnumerationScopeList) ; | |
3937 | (* Enumeration scope list which *) | |
3938 | (* contains a list of all *) | |
3939 | (* enumerations which are *) | |
3940 | (* visable within this scope. *) | |
3941 | InitTree(NamedObjects) ; (* Names of all items declared. *) | |
3942 | InitList(ListOfVars) ; (* List of variables in this *) | |
3943 | (* scope. *) | |
3944 | InitList(ListOfProcs) ; (* List of all procedures *) | |
3945 | (* declared within this *) | |
3946 | (* procedure. *) | |
3947 | InitList(ListOfModules) ; (* List of all inner modules. *) | |
3948 | ExceptionFinally := FALSE ; (* does it have an exception? *) | |
3949 | ExceptionBlock := FALSE ; (* does it have an exception? *) | |
3950 | Size := InitValue() ; (* Activation record size. *) | |
3951 | TotalParamSize | |
3952 | := InitValue() ; (* size of all parameters. *) | |
3953 | Begin := 0 ; (* token number for BEGIN *) | |
3954 | End := 0 ; (* token number for END *) | |
3955 | InitWhereDeclaredTok(tok, At) ; (* Where symbol declared. *) | |
3956 | errorScope := GetCurrentErrorScope () ; (* Title error scope. *) | |
3957 | END | |
3958 | END ; | |
3959 | (* Now add this procedure to the symbol table of the current scope *) | |
3960 | AddSymToScope(Sym, ProcedureName) ; | |
3961 | AddProcedureToList(GetCurrentScope(), Sym) | |
3962 | END ; | |
3963 | RETURN Sym | |
3964 | END MakeProcedure ; | |
3965 | ||
3966 | ||
94673a12 GM |
3967 | (* |
3968 | PutProcedureNoReturn - places value into the no return attribute | |
3969 | field of procedure sym. | |
3970 | *) | |
3971 | ||
3972 | PROCEDURE PutProcedureNoReturn (Sym: CARDINAL; value: BOOLEAN) ; | |
3973 | VAR | |
3974 | pSym: PtrToSymbol ; | |
3975 | BEGIN | |
3976 | pSym := GetPsym (Sym) ; | |
3977 | WITH pSym^ DO | |
3978 | CASE SymbolType OF | |
3979 | ||
3980 | ProcedureSym: Procedure.IsNoReturn := value | |
3981 | ||
3982 | ELSE | |
3983 | InternalError ('expecting ProcedureSym symbol') | |
3984 | END | |
3985 | END | |
3986 | END PutProcedureNoReturn ; | |
3987 | ||
3988 | ||
3989 | (* | |
3990 | IsProcedureNoReturn - returns TRUE if this procedure never returns. | |
3991 | *) | |
3992 | ||
3993 | PROCEDURE IsProcedureNoReturn (Sym: CARDINAL) : BOOLEAN ; | |
3994 | VAR | |
3995 | pSym: PtrToSymbol ; | |
3996 | BEGIN | |
3997 | pSym := GetPsym (Sym) ; | |
3998 | WITH pSym^ DO | |
3999 | CASE SymbolType OF | |
4000 | ||
4001 | ProcedureSym: RETURN Procedure.IsNoReturn | |
4002 | ||
4003 | ELSE | |
4004 | InternalError ('expecting ProcedureSym symbol') | |
4005 | END | |
4006 | END | |
4007 | END IsProcedureNoReturn ; | |
4008 | ||
4009 | ||
1eee94d3 GM |
4010 | (* |
4011 | PutMonoName - changes the IsMonoName boolean inside the procedure. | |
4012 | *) | |
4013 | ||
4014 | PROCEDURE PutMonoName (sym: CARDINAL; value: BOOLEAN) ; | |
4015 | VAR | |
4016 | pSym: PtrToSymbol ; | |
4017 | BEGIN | |
4018 | pSym := GetPsym (sym) ; | |
4019 | WITH pSym^ DO | |
4020 | CASE SymbolType OF | |
4021 | ||
4022 | ProcedureSym: Procedure.IsMonoName := value | |
4023 | ||
4024 | ELSE | |
4025 | InternalError ('expecting ProcedureSym symbol') | |
4026 | END | |
4027 | END | |
4028 | END PutMonoName ; | |
4029 | ||
4030 | ||
4031 | (* | |
4032 | IsMonoName - returns the public boolean associated with a procedure. | |
4033 | *) | |
4034 | ||
4035 | PROCEDURE IsMonoName (sym: CARDINAL) : BOOLEAN ; | |
4036 | VAR | |
4037 | pSym: PtrToSymbol ; | |
4038 | BEGIN | |
4039 | pSym := GetPsym (sym) ; | |
4040 | WITH pSym^ DO | |
4041 | CASE SymbolType OF | |
4042 | ||
4043 | ProcedureSym: RETURN Procedure.IsMonoName | |
4044 | ||
4045 | ELSE | |
4046 | InternalError ('expecting ProcedureSym symbol') | |
4047 | END | |
4048 | END | |
4049 | END IsMonoName ; | |
4050 | ||
4051 | ||
4052 | (* | |
4053 | PutExtern - changes the extern boolean inside the procedure. | |
4054 | *) | |
4055 | ||
4056 | PROCEDURE PutExtern (sym: CARDINAL; value: BOOLEAN) ; | |
4057 | VAR | |
4058 | pSym: PtrToSymbol ; | |
4059 | BEGIN | |
4060 | pSym := GetPsym (sym) ; | |
4061 | WITH pSym^ DO | |
4062 | CASE SymbolType OF | |
4063 | ||
4064 | ProcedureSym: Procedure.IsExtern := value | |
4065 | ||
4066 | ELSE | |
4067 | InternalError ('expecting ProcedureSym symbol') | |
4068 | END | |
4069 | END | |
4070 | END PutExtern ; | |
4071 | ||
4072 | ||
4073 | (* | |
4074 | IsExtern - returns the public boolean associated with a procedure. | |
4075 | *) | |
4076 | ||
4077 | PROCEDURE IsExtern (sym: CARDINAL) : BOOLEAN ; | |
4078 | VAR | |
4079 | pSym: PtrToSymbol ; | |
4080 | BEGIN | |
4081 | pSym := GetPsym (sym) ; | |
4082 | WITH pSym^ DO | |
4083 | CASE SymbolType OF | |
4084 | ||
4085 | ProcedureSym: RETURN Procedure.IsExtern | |
4086 | ||
4087 | ELSE | |
4088 | InternalError ('expecting ProcedureSym symbol') | |
4089 | END | |
4090 | END | |
4091 | END IsExtern ; | |
4092 | ||
4093 | ||
4094 | (* | |
4095 | PutPublic - changes the public boolean inside the procedure. | |
4096 | *) | |
4097 | ||
4098 | PROCEDURE PutPublic (sym: CARDINAL; value: BOOLEAN) ; | |
4099 | VAR | |
4100 | pSym: PtrToSymbol ; | |
4101 | BEGIN | |
4102 | pSym := GetPsym (sym) ; | |
4103 | WITH pSym^ DO | |
4104 | CASE SymbolType OF | |
4105 | ||
4106 | ProcedureSym : Procedure.IsPublic := value | |
4107 | ||
4108 | ELSE | |
4109 | InternalError ('expecting ProcedureSym symbol') | |
4110 | END | |
4111 | END | |
4112 | END PutPublic ; | |
4113 | ||
4114 | ||
4115 | (* | |
4116 | IsPublic - returns the public boolean associated with a procedure. | |
4117 | *) | |
4118 | ||
4119 | PROCEDURE IsPublic (sym: CARDINAL) : BOOLEAN ; | |
4120 | VAR | |
4121 | pSym: PtrToSymbol ; | |
4122 | BEGIN | |
4123 | pSym := GetPsym (sym) ; | |
4124 | WITH pSym^ DO | |
4125 | CASE SymbolType OF | |
4126 | ||
4127 | ProcedureSym : RETURN Procedure.IsPublic | |
4128 | ||
4129 | ELSE | |
4130 | InternalError ('expecting ProcedureSym symbol') | |
4131 | END | |
4132 | END | |
4133 | END IsPublic ; | |
4134 | ||
4135 | ||
4136 | (* | |
4137 | PutCtor - changes the ctor boolean inside the procedure. | |
4138 | *) | |
4139 | ||
4140 | PROCEDURE PutCtor (sym: CARDINAL; value: BOOLEAN) ; | |
4141 | VAR | |
4142 | pSym: PtrToSymbol ; | |
4143 | BEGIN | |
4144 | pSym := GetPsym (sym) ; | |
4145 | WITH pSym^ DO | |
4146 | CASE SymbolType OF | |
4147 | ||
4148 | ProcedureSym : Procedure.IsCtor := value | |
4149 | ||
4150 | ELSE | |
4151 | InternalError ('expecting ProcedureSym symbol') | |
4152 | END | |
4153 | END | |
4154 | END PutCtor ; | |
4155 | ||
4156 | ||
4157 | (* | |
4158 | IsCtor - returns the ctor boolean associated with a procedure. | |
4159 | *) | |
4160 | ||
4161 | PROCEDURE IsCtor (sym: CARDINAL) : BOOLEAN ; | |
4162 | VAR | |
4163 | pSym: PtrToSymbol ; | |
4164 | BEGIN | |
4165 | pSym := GetPsym (sym) ; | |
4166 | WITH pSym^ DO | |
4167 | CASE SymbolType OF | |
4168 | ||
4169 | ProcedureSym : RETURN Procedure.IsCtor | |
4170 | ||
4171 | ELSE | |
4172 | InternalError ('expecting ProcedureSym symbol') | |
4173 | END | |
4174 | END | |
4175 | END IsCtor ; | |
4176 | ||
4177 | ||
4178 | (* | |
4179 | AddProcedureToList - adds a procedure, Proc, to the list of procedures | |
4180 | in module, Mod. | |
4181 | *) | |
4182 | ||
4183 | PROCEDURE AddProcedureToList (Mod, Proc: CARDINAL) ; | |
4184 | VAR | |
4185 | pSym: PtrToSymbol ; | |
4186 | BEGIN | |
4187 | pSym := GetPsym(Mod) ; | |
4188 | WITH pSym^ DO | |
4189 | CASE SymbolType OF | |
4190 | ||
4191 | DefImpSym : PutItemIntoList(DefImp.ListOfProcs, Proc) | | |
4192 | ModuleSym : PutItemIntoList(Module.ListOfProcs, Proc) | | |
4193 | ProcedureSym: PutItemIntoList(Procedure.ListOfProcs, Proc) | |
4194 | ||
4195 | ELSE | |
4196 | InternalError ('expecting ModuleSym, DefImpSym or ProcedureSym symbol') | |
4197 | END | |
4198 | END | |
4199 | END AddProcedureToList ; | |
4200 | ||
4201 | ||
4202 | (* | |
4203 | AddVarToScopeList - adds symbol, sym, to, scope. | |
4204 | *) | |
4205 | ||
4206 | PROCEDURE AddVarToScopeList (scope, sym: CARDINAL) ; | |
4207 | VAR | |
4208 | pSym: PtrToSymbol ; | |
4209 | BEGIN | |
4210 | pSym := GetPsym(scope) ; | |
4211 | WITH pSym^ DO | |
4212 | CASE SymbolType OF | |
4213 | ||
4214 | ProcedureSym: PutItemIntoList(Procedure.ListOfVars, sym) | | |
4215 | ModuleSym : PutItemIntoList(Module.ListOfVars, sym) | | |
4216 | DefImpSym : PutItemIntoList(DefImp.ListOfVars, sym) | |
4217 | ||
4218 | ELSE | |
4219 | InternalError ('expecting Procedure or Module symbol') | |
4220 | END | |
4221 | END | |
4222 | END AddVarToScopeList ; | |
4223 | ||
4224 | ||
4225 | (* | |
4226 | AddVarToList - add a variable symbol to the list of variables maintained | |
4227 | by the inner most scope. (Procedure or Module). | |
4228 | *) | |
4229 | ||
4230 | PROCEDURE AddVarToList (Sym: CARDINAL) ; | |
4231 | VAR | |
4232 | pCall: PtrToCallFrame ; | |
4233 | BEGIN | |
4234 | pCall := GetPcall(ScopePtr) ; | |
4235 | AddVarToScopeList(pCall^.Main, Sym) | |
4236 | END AddVarToList ; | |
4237 | ||
4238 | ||
4239 | (* | |
4240 | MakeVar - creates a variable sym with VarName. It returns the | |
4241 | symbol index. | |
4242 | *) | |
4243 | ||
4244 | PROCEDURE MakeVar (tok: CARDINAL; VarName: Name) : CARDINAL ; | |
4245 | VAR | |
4246 | pSym: PtrToSymbol ; | |
4247 | Sym : CARDINAL ; | |
4248 | BEGIN | |
4249 | Sym := DeclareSym (tok, VarName) ; | |
4250 | IF NOT IsError(Sym) | |
4251 | THEN | |
4252 | pSym := GetPsym(Sym) ; | |
4253 | WITH pSym^ DO | |
4254 | SymbolType := VarSym ; | |
4255 | WITH Var DO | |
4256 | name := VarName ; | |
4257 | Type := NulSym ; | |
4258 | BackType := NulSym ; | |
4259 | Size := InitValue() ; | |
4260 | Offset := InitValue() ; | |
4261 | AddrMode := RightValue ; | |
4262 | Scope := GetCurrentScope() ; (* Procedure or Module? *) | |
4263 | AtAddress := FALSE ; | |
4264 | Address := NulSym ; (* Address at which declared. *) | |
4265 | IsTemp := FALSE ; | |
4266 | IsComponentRef := FALSE ; | |
4267 | IsParam := FALSE ; | |
4268 | IsPointerCheck := FALSE ; | |
4269 | IsWritten := FALSE ; | |
4270 | IsSSA := FALSE ; | |
4271 | IsConst := FALSE ; | |
40b91158 | 4272 | ArrayRef := FALSE ; |
b80e3c46 | 4273 | Heap := FALSE ; |
1eee94d3 GM |
4274 | InitWhereDeclaredTok(tok, At) ; |
4275 | InitWhereFirstUsedTok(tok, At) ; (* Where symbol first used. *) | |
4276 | InitList(ReadUsageList[RightValue]) ; | |
4277 | InitList(WriteUsageList[RightValue]) ; | |
4278 | InitList(ReadUsageList[LeftValue]) ; | |
b0762d4c GM |
4279 | InitList(WriteUsageList[LeftValue]) ; |
4280 | InitState[LeftValue] := InitSymInit () ; | |
4281 | InitState[RightValue] := InitSymInit () | |
1eee94d3 GM |
4282 | END |
4283 | END ; | |
4284 | (* Add Var to Procedure or Module variable list. *) | |
4285 | AddVarToList(Sym) ; | |
4286 | (* Now add this Var to the symbol table of the current scope. *) | |
4287 | AddSymToScope(Sym, VarName) | |
4288 | END ; | |
4289 | RETURN Sym | |
4290 | END MakeVar ; | |
4291 | ||
4292 | ||
4293 | (* | |
4294 | PutExceptionBlock - sets a BOOLEAN in block module/procedure/defimp, | |
4295 | sym, indicating that this block as an EXCEPT | |
4296 | statement sequence. | |
4297 | *) | |
4298 | ||
4299 | PROCEDURE PutExceptionBlock (sym: CARDINAL) ; | |
4300 | VAR | |
4301 | pSym: PtrToSymbol ; | |
4302 | BEGIN | |
4303 | pSym := GetPsym(sym) ; | |
4304 | WITH pSym^ DO | |
4305 | CASE SymbolType OF | |
4306 | ||
4307 | ProcedureSym: Procedure.ExceptionBlock := TRUE | | |
4308 | ModuleSym : Module.ExceptionBlock := TRUE | | |
4309 | DefImpSym : DefImp.ExceptionBlock := TRUE | |
4310 | ||
4311 | ELSE | |
4312 | InternalError ('expecting Procedure') | |
4313 | END | |
4314 | END | |
4315 | END PutExceptionBlock ; | |
4316 | ||
4317 | ||
4318 | (* | |
4319 | HasExceptionBlock - returns a BOOLEAN determining whether | |
4320 | module/procedure/defimp, sym, has | |
4321 | an EXCEPT statement sequence. | |
4322 | *) | |
4323 | ||
4324 | PROCEDURE HasExceptionBlock (sym: CARDINAL) : BOOLEAN ; | |
4325 | VAR | |
4326 | pSym: PtrToSymbol ; | |
4327 | BEGIN | |
4328 | pSym := GetPsym(sym) ; | |
4329 | WITH pSym^ DO | |
4330 | CASE SymbolType OF | |
4331 | ||
4332 | ProcedureSym: RETURN( Procedure.ExceptionBlock ) | | |
4333 | ModuleSym : RETURN( Module.ExceptionBlock ) | | |
4334 | DefImpSym : RETURN( DefImp.ExceptionBlock ) | |
4335 | ||
4336 | ELSE | |
4337 | InternalError ('expecting Procedure') | |
4338 | END | |
4339 | END | |
4340 | END HasExceptionBlock ; | |
4341 | ||
4342 | ||
4343 | (* | |
4344 | PutExceptionFinally - sets a BOOLEAN in block module/defimp, | |
4345 | sym, indicating that this FINALLY block | |
4346 | as an EXCEPT statement sequence. | |
4347 | *) | |
4348 | ||
4349 | PROCEDURE PutExceptionFinally (sym: CARDINAL) ; | |
4350 | VAR | |
4351 | pSym: PtrToSymbol ; | |
4352 | BEGIN | |
4353 | pSym := GetPsym(sym) ; | |
4354 | WITH pSym^ DO | |
4355 | CASE SymbolType OF | |
4356 | ||
4357 | ProcedureSym: Procedure.ExceptionFinally := TRUE | | |
4358 | ModuleSym : Module.ExceptionFinally := TRUE | | |
4359 | DefImpSym : DefImp.ExceptionFinally := TRUE | |
4360 | ||
4361 | ELSE | |
4362 | InternalError ('expecting DefImp or Module symbol') | |
4363 | END | |
4364 | END | |
4365 | END PutExceptionFinally ; | |
4366 | ||
4367 | ||
4368 | (* | |
4369 | HasExceptionFinally - returns a BOOLEAN determining whether | |
4370 | module/defimp, sym, has | |
4371 | an EXCEPT statement sequence. | |
4372 | *) | |
4373 | ||
4374 | PROCEDURE HasExceptionFinally (sym: CARDINAL) : BOOLEAN ; | |
4375 | VAR | |
4376 | pSym: PtrToSymbol ; | |
4377 | BEGIN | |
4378 | pSym := GetPsym(sym) ; | |
4379 | WITH pSym^ DO | |
4380 | CASE SymbolType OF | |
4381 | ||
4382 | ProcedureSym: RETURN( Procedure.ExceptionFinally ) | | |
4383 | ModuleSym : RETURN( Module.ExceptionFinally ) | | |
4384 | DefImpSym : RETURN( DefImp.ExceptionFinally ) | |
4385 | ||
4386 | ELSE | |
4387 | InternalError ('expecting DefImp or Module symbol') | |
4388 | END | |
4389 | END | |
4390 | END HasExceptionFinally ; | |
4391 | ||
4392 | ||
4393 | (* | |
4394 | FillInRecordFields - given a new symbol, sym, make it a record symbol | |
4395 | and initialize its fields. | |
4396 | *) | |
4397 | ||
4398 | PROCEDURE FillInRecordFields (tok: CARDINAL; sym: CARDINAL; RecordName: Name; | |
4399 | scope: CARDINAL; oaf: CARDINAL) ; | |
4400 | VAR | |
4401 | pSym: PtrToSymbol ; | |
4402 | BEGIN | |
4403 | IF NOT IsError(sym) | |
4404 | THEN | |
4405 | pSym := GetPsym (sym) ; | |
4406 | WITH pSym^ DO | |
4407 | SymbolType := RecordSym ; | |
4408 | WITH Record DO | |
4409 | name := RecordName ; | |
4410 | InitTree (LocalSymbols) ; | |
4411 | Size := InitValue () ; | |
4412 | InitList (ListOfSons) ; (* List of RecordFieldSym and VarientSym *) | |
4413 | oafamily := oaf ; | |
4414 | Parent := NulSym ; | |
4415 | Align := NulSym ; | |
4416 | DefaultAlign := NulSym ; | |
4417 | DeclPacked := FALSE ; | |
4418 | DeclResolved := FALSE ; | |
4419 | Scope := scope ; | |
4420 | InitWhereDeclaredTok (tok, At) | |
4421 | END | |
4422 | END | |
4423 | END | |
4424 | END FillInRecordFields ; | |
4425 | ||
4426 | ||
4427 | (* | |
4428 | HandleHiddenOrDeclare - | |
4429 | *) | |
4430 | ||
4431 | PROCEDURE HandleHiddenOrDeclare (tok: CARDINAL; name: Name; VAR oaf: CARDINAL) : CARDINAL ; | |
4432 | VAR | |
4433 | sym: CARDINAL ; | |
4434 | BEGIN | |
4435 | sym := CheckForHiddenType (name) ; | |
4436 | IF sym=NulSym | |
4437 | THEN | |
4438 | sym := DeclareSym (tok, name) ; | |
4439 | IF NOT IsError (sym) | |
4440 | THEN | |
4441 | (* Now add this type to the symbol table of the current scope *) | |
4442 | AddSymToScope (sym, name) | |
4443 | END | |
4444 | END ; | |
4445 | oaf := GetOAFamily (sym) ; | |
4446 | RETURN sym | |
4447 | END HandleHiddenOrDeclare ; | |
4448 | ||
4449 | ||
4450 | (* | |
4451 | MakeRecord - makes a Record symbol with name RecordName. | |
4452 | *) | |
4453 | ||
4454 | PROCEDURE MakeRecord (tok: CARDINAL; RecordName: Name) : CARDINAL ; | |
4455 | VAR | |
4456 | oaf, sym: CARDINAL ; | |
4457 | BEGIN | |
4458 | sym := HandleHiddenOrDeclare (tok, RecordName, oaf) ; | |
4459 | FillInRecordFields (tok, sym, RecordName, GetCurrentScope (), oaf) ; | |
4460 | ForeachOAFamily (oaf, doFillInOAFamily) ; | |
4461 | RETURN sym | |
4462 | END MakeRecord ; | |
4463 | ||
4464 | ||
4465 | (* | |
4466 | MakeVarient - creates a new symbol, a varient symbol for record or varient field | |
4467 | symbol, RecOrVarFieldSym. | |
4468 | *) | |
4469 | ||
4470 | PROCEDURE MakeVarient (tok: CARDINAL; RecOrVarFieldSym: CARDINAL) : CARDINAL ; | |
4471 | VAR | |
4472 | pSym: PtrToSymbol ; | |
4473 | Sym : CARDINAL ; | |
4474 | BEGIN | |
4475 | NewSym (Sym) ; | |
4476 | pSym := GetPsym(Sym) ; | |
4477 | WITH pSym^ DO | |
4478 | SymbolType := VarientSym ; | |
4479 | WITH Varient DO | |
4480 | Size := InitValue() ; | |
4481 | Parent := RecOrVarFieldSym ; (* GetRecord(RecOrVarFieldSym) ; *) | |
4482 | IF IsRecord(RecOrVarFieldSym) | |
4483 | THEN | |
4484 | Varient := NulSym | |
4485 | ELSE | |
4486 | Varient := RecOrVarFieldSym | |
4487 | END ; | |
4488 | tag := NulSym ; | |
4489 | DeclPacked := FALSE ; | |
4490 | Scope := GetCurrentScope() ; | |
4491 | InitList(ListOfSons) ; | |
4492 | InitWhereDeclaredTok(tok, At) | |
4493 | END | |
4494 | END ; | |
4495 | (* Now add Sym to the record RecSym field list *) | |
4496 | pSym := GetPsym(RecOrVarFieldSym) ; | |
4497 | WITH pSym^ DO | |
4498 | CASE SymbolType OF | |
4499 | ||
4500 | RecordSym : PutItemIntoList(Record.ListOfSons, Sym) | | |
4501 | VarientFieldSym: PutItemIntoList(VarientField.ListOfSons, Sym) | |
4502 | ||
4503 | ELSE | |
4504 | InternalError ('expecting Record or VarientField symbol') | |
4505 | END | |
4506 | END ; | |
4507 | RETURN Sym | |
4508 | END MakeVarient ; | |
4509 | ||
4510 | ||
4511 | (* | |
4512 | GetRecord - fetches the record symbol from the parent of Sym. | |
4513 | Sym maybe a varient symbol in which case its parent is searched | |
4514 | etc. | |
4515 | *) | |
4516 | ||
4517 | PROCEDURE GetRecord (Sym: CARDINAL) : CARDINAL ; | |
4518 | VAR | |
4519 | pSym: PtrToSymbol ; | |
4520 | BEGIN | |
4521 | pSym := GetPsym (Sym) ; | |
4522 | WITH pSym^ DO | |
4523 | CASE SymbolType OF | |
4524 | ||
4525 | RecordSym : RETURN Sym | | |
4526 | VarientSym : RETURN GetRecord(Varient.Parent) | | |
4527 | VarientFieldSym: RETURN GetRecord(VarientField.Parent) | |
4528 | ||
4529 | ELSE | |
4530 | InternalError ('expecting Record or Varient symbol') | |
4531 | END | |
4532 | END | |
4533 | END GetRecord ; | |
4534 | ||
4535 | ||
4536 | (* | |
4537 | PutDeclaredPacked - sets the Packed field of the record or record field symbol. | |
4538 | *) | |
4539 | ||
4540 | PROCEDURE PutDeclaredPacked (sym: CARDINAL; b: BOOLEAN) ; | |
4541 | VAR | |
4542 | pSym: PtrToSymbol ; | |
4543 | BEGIN | |
4544 | pSym := GetPsym(sym) ; | |
4545 | WITH pSym^ DO | |
4546 | CASE SymbolType OF | |
4547 | ||
4548 | RecordSym : Record.DeclPacked := b ; | |
4549 | Record.DeclResolved := TRUE | | |
4550 | RecordFieldSym : RecordField.DeclPacked := b ; | |
4551 | RecordField.DeclResolved := TRUE | | |
4552 | VarientFieldSym: VarientField.DeclPacked := b ; | |
4553 | VarientField.DeclResolved := TRUE | | |
4554 | VarientSym : Varient.DeclPacked := b ; | |
4555 | Varient.DeclResolved := TRUE | |
4556 | ||
4557 | ELSE | |
4558 | InternalError ('expecting a record or field record symbol') | |
4559 | END | |
4560 | END | |
4561 | END PutDeclaredPacked ; | |
4562 | ||
4563 | ||
4564 | (* | |
4565 | IsDeclaredPacked - was the record symbol or record field, sym, | |
4566 | declared as packed? | |
4567 | *) | |
4568 | ||
4569 | PROCEDURE IsDeclaredPacked (sym: CARDINAL) : BOOLEAN ; | |
4570 | VAR | |
4571 | pSym: PtrToSymbol ; | |
4572 | BEGIN | |
4573 | pSym := GetPsym (sym) ; | |
4574 | WITH pSym^ DO | |
4575 | CASE SymbolType OF | |
4576 | ||
4577 | RecordSym : RETURN Record.DeclPacked | | |
4578 | RecordFieldSym : RETURN RecordField.DeclPacked | | |
4579 | VarientFieldSym: RETURN VarientField.DeclPacked | | |
4580 | VarientSym : RETURN Varient.DeclPacked | |
4581 | ||
4582 | ELSE | |
4583 | InternalError ('expecting a record or a record field symbol') | |
4584 | END | |
4585 | END | |
4586 | END IsDeclaredPacked ; | |
4587 | ||
4588 | ||
4589 | (* | |
4590 | IsDeclaredPackedResolved - do we know if the record symbol or record | |
4591 | field, sym, declared as packed or not packed? | |
4592 | *) | |
4593 | ||
4594 | PROCEDURE IsDeclaredPackedResolved (sym: CARDINAL) : BOOLEAN ; | |
4595 | VAR | |
4596 | pSym: PtrToSymbol ; | |
4597 | BEGIN | |
4598 | pSym := GetPsym (sym) ; | |
4599 | WITH pSym^ DO | |
4600 | CASE SymbolType OF | |
4601 | ||
4602 | RecordSym : RETURN Record.DeclResolved | | |
4603 | RecordFieldSym : RETURN RecordField.DeclResolved | | |
4604 | VarientFieldSym: RETURN VarientField.DeclResolved | | |
4605 | VarientSym : RETURN Varient.DeclResolved | |
4606 | ||
4607 | ELSE | |
4608 | InternalError ('expecting a record or a record field symbol') | |
4609 | END | |
4610 | END | |
4611 | END IsDeclaredPackedResolved ; | |
4612 | ||
4613 | ||
4614 | (* | |
4615 | MakeEnumeration - places a new symbol in the current scope, the symbol | |
4616 | is an enumeration symbol. The symbol index is returned. | |
4617 | *) | |
4618 | ||
4619 | PROCEDURE MakeEnumeration (tok: CARDINAL; EnumerationName: Name) : CARDINAL ; | |
4620 | VAR | |
4621 | pSym : PtrToSymbol ; | |
4622 | sym, oaf: CARDINAL ; | |
4623 | BEGIN | |
4624 | sym := CheckForHiddenType (EnumerationName) ; | |
4625 | IF sym=NulSym | |
4626 | THEN | |
4627 | sym := DeclareSym (tok, EnumerationName) ; | |
4628 | oaf := GetOAFamily (sym) ; | |
4629 | IF NOT IsError (sym) | |
4630 | THEN | |
4631 | pSym := GetPsym (sym) ; | |
4632 | pSym^.SymbolType := EnumerationSym ; (* To satisfy AddSymToScope *) | |
4633 | (* Now add this type to the symbol table of the current scope *) | |
4634 | AddSymToScope (sym, EnumerationName) | |
4635 | END | |
4636 | ELSE | |
4637 | oaf := GetOAFamily (sym) | |
4638 | END ; | |
4639 | IF NOT IsError (sym) | |
4640 | THEN | |
4641 | pSym := GetPsym (sym) ; | |
4642 | WITH pSym^ DO | |
4643 | SymbolType := EnumerationSym ; | |
4644 | WITH Enumeration DO | |
4645 | name := EnumerationName ; (* Name of enumeration. *) | |
4646 | NoOfElements := 0 ; (* No of elements in the *) | |
4647 | (* enumeration type. *) | |
4648 | Size := InitValue () ; (* Size at runtime of sym *) | |
4649 | InitTree (LocalSymbols) ; (* Enumeration fields. *) | |
89b58667 | 4650 | InitList (ListOfFields) ; (* Ordered as declared. *) |
1eee94d3 GM |
4651 | InitPacked (packedInfo) ; (* not packed and no *) |
4652 | (* equivalent (yet). *) | |
4653 | oafamily := oaf ; (* The open array family *) | |
4654 | Scope := GetCurrentScope () ; (* Which scope created it *) | |
4655 | InitWhereDeclaredTok (tok, At) (* Declared here *) | |
4656 | END | |
4657 | END ; | |
4658 | CheckIfEnumerationExported (sym, ScopePtr) | |
4659 | END ; | |
4660 | ForeachOAFamily (oaf, doFillInOAFamily) ; | |
4661 | RETURN sym | |
4662 | END MakeEnumeration ; | |
4663 | ||
4664 | ||
4665 | (* | |
4666 | MakeType - makes a type symbol with name TypeName. | |
4667 | *) | |
4668 | ||
4669 | PROCEDURE MakeType (tok: CARDINAL; TypeName: Name) : CARDINAL ; | |
4670 | VAR | |
4671 | pSym : PtrToSymbol ; | |
4672 | sym, oaf: CARDINAL ; | |
4673 | BEGIN | |
4674 | sym := HandleHiddenOrDeclare (tok, TypeName, oaf) ; | |
4675 | IF NOT IsError(sym) | |
4676 | THEN | |
4677 | pSym := GetPsym(sym) ; | |
4678 | WITH pSym^ DO | |
4679 | SymbolType := TypeSym ; | |
4680 | WITH Type DO | |
4681 | name := TypeName ; (* Index into name array, name *) | |
4682 | (* of type. *) | |
4683 | Type := NulSym ; (* Index to a type symbol. *) | |
4684 | IsHidden := FALSE ; (* Was it declared as hidden? *) | |
4685 | InitTree(ConstLitTree) ; (* constants of this type. *) | |
4686 | Size := InitValue() ; (* Runtime size of symbol. *) | |
4687 | Align := NulSym ; (* Alignment of this type. *) | |
4688 | InitPacked(packedInfo) ; (* not packed and no *) | |
4689 | (* equivalent yet. *) | |
4690 | oafamily := oaf ; (* The open array family. *) | |
4691 | Scope := GetCurrentScope() ; (* Which scope created it *) | |
4692 | InitWhereDeclaredTok(tok, At) (* Declared here *) | |
4693 | END | |
4694 | END | |
4695 | END ; | |
4696 | ForeachOAFamily(oaf, doFillInOAFamily) ; | |
4697 | RETURN sym | |
4698 | END MakeType ; | |
4699 | ||
4700 | ||
4701 | (* | |
4702 | MakeHiddenType - makes a type symbol that is hidden from the | |
4703 | definition module. | |
4704 | This symbol is placed into the UnImplemented list of | |
4705 | the definition/implementation module. | |
4706 | The type will be filled in when the implementation module | |
4707 | is reached. | |
4708 | *) | |
4709 | ||
4710 | PROCEDURE MakeHiddenType (tok: CARDINAL; TypeName: Name) : CARDINAL ; | |
4711 | VAR | |
4712 | pSym: PtrToSymbol ; | |
4713 | Sym : CARDINAL ; | |
4714 | BEGIN | |
4715 | Sym := DeclareSym (tok, TypeName) ; | |
4716 | IF NOT IsError(Sym) | |
4717 | THEN | |
4718 | pSym := GetPsym(Sym) ; | |
4719 | WITH pSym^ DO | |
4720 | SymbolType := TypeSym ; | |
4721 | WITH Type DO | |
4722 | name := TypeName ; (* Index into name array, name *) | |
4723 | (* of type. *) | |
4724 | IsHidden := GetMainModule()#GetCurrentScope() ; | |
4725 | IF ExtendedOpaque OR (NOT IsHidden) | |
4726 | THEN | |
4727 | Type := NulSym (* will be filled in later *) | |
4728 | ELSE | |
4729 | Type := Address | |
4730 | END ; | |
4731 | Align := NulSym ; (* Alignment of this type. *) | |
4732 | Scope := GetCurrentScope() ; (* Which scope created it *) | |
4733 | oafamily := NulSym ; | |
4734 | IF NOT ExtendedOpaque | |
4735 | THEN | |
4736 | IncludeItemIntoList(AddressTypes, Sym) | |
4737 | END ; | |
4738 | Size := InitValue() ; (* Runtime size of symbol. *) | |
4739 | InitWhereDeclaredTok(tok, At) (* Declared here *) | |
4740 | END | |
4741 | END ; | |
4742 | PutExportUnImplemented (tok, Sym) ; | |
4743 | IF ExtendedOpaque OR (GetMainModule()=GetCurrentScope()) | |
4744 | THEN | |
4745 | PutHiddenTypeDeclared | |
4746 | END ; | |
4747 | (* Now add this type to the symbol table of the current scope *) | |
4748 | AddSymToScope(Sym, TypeName) | |
4749 | END ; | |
4750 | RETURN Sym | |
4751 | END MakeHiddenType ; | |
4752 | ||
4753 | ||
4754 | (* | |
4755 | GetConstFromTypeTree - return a constant symbol from the tree owned by constType. | |
4756 | NulSym is returned if the symbol is unknown. | |
4757 | *) | |
4758 | ||
4759 | (* | |
4760 | PROCEDURE GetConstFromTypeTree (constName: Name; constType: CARDINAL) : CARDINAL ; | |
4761 | VAR | |
4762 | pSym: PtrToSymbol ; | |
4763 | BEGIN | |
4764 | IF constType=NulSym | |
4765 | THEN | |
4766 | RETURN GetSymKey(ConstLitTree, constName) | |
4767 | ELSE | |
4768 | pSym := GetPsym(constType) ; | |
4769 | Assert(IsType(constType) OR IsSubrange(constType) OR IsPointer(constType)) ; | |
4770 | WITH pSym^ DO | |
4771 | CASE SymbolType OF | |
4772 | ||
4773 | TypeSym : RETURN GetSymKey (Type.ConstLitTree, constName) | | |
4774 | SubrangeSym: RETURN GetSymKey (Subrange.ConstLitTree, constName) | | |
4775 | PointerSym : RETURN GetSymKey (Pointer.ConstLitTree, constName) | |
4776 | ||
4777 | ELSE | |
4778 | InternalError ('expecting Type symbol') | |
4779 | END | |
4780 | END | |
4781 | END | |
4782 | END GetConstFromTypeTree ; | |
4783 | *) | |
4784 | ||
4785 | ||
4786 | (* | |
4787 | PutConstIntoTypeTree - places, constSym, into the tree of constants owned by, constType. | |
4788 | constName is the name of constSym. | |
4789 | *) | |
4790 | ||
4791 | (* | |
4792 | PROCEDURE PutConstIntoTypeTree (constName: Name; constType: CARDINAL; constSym: CARDINAL) ; | |
4793 | VAR | |
4794 | pSym: PtrToSymbol ; | |
4795 | BEGIN | |
4796 | IF constType=NulSym | |
4797 | THEN | |
4798 | PutSymKey(ConstLitTree, constName, constSym) | |
4799 | ELSE | |
4800 | pSym := GetPsym(constType) ; | |
4801 | Assert(IsType(constType) OR IsSubrange(constType) OR IsPointer(constType)) ; | |
4802 | WITH pSym^ DO | |
4803 | CASE SymbolType OF | |
4804 | ||
4805 | TypeSym : PutSymKey (Type.ConstLitTree, constName, constSym) | | |
4806 | SubrangeSym: PutSymKey (Subrange.ConstLitTree, constName, constSym) | | |
4807 | PointerSym : PutSymKey (Pointer.ConstLitTree, constName, constSym) | |
4808 | ||
4809 | ELSE | |
4810 | InternalError ('expecting Type symbol') | |
4811 | END | |
4812 | END | |
4813 | END | |
4814 | END PutConstIntoTypeTree ; | |
4815 | *) | |
4816 | ||
4817 | ||
4818 | (* | |
4819 | MakeConstant - create a constant cardinal and return the symbol. | |
4820 | *) | |
4821 | ||
4822 | PROCEDURE MakeConstant (tok: CARDINAL; value: CARDINAL) : CARDINAL ; | |
4823 | VAR | |
4824 | str: String ; | |
4825 | sym: CARDINAL ; | |
4826 | BEGIN | |
4827 | str := Sprintf1 (Mark (InitString ("%d")), value) ; | |
4828 | sym := MakeConstLit (tok, makekey (string (str)), Cardinal) ; | |
4829 | str := KillString (str) ; | |
4830 | RETURN sym | |
4831 | END MakeConstant ; | |
4832 | ||
4833 | ||
4834 | (* | |
d5e2694e | 4835 | CreateConstLit - |
1eee94d3 GM |
4836 | *) |
4837 | ||
d5e2694e | 4838 | PROCEDURE CreateConstLit (tok: CARDINAL; constName: Name; constType: CARDINAL) : CARDINAL ; |
1eee94d3 | 4839 | VAR |
370298f4 GM |
4840 | pSym : PtrToSymbol ; |
4841 | Sym : CARDINAL ; | |
370298f4 | 4842 | overflow : BOOLEAN ; |
1eee94d3 | 4843 | BEGIN |
370298f4 | 4844 | overflow := FALSE ; |
1eee94d3 GM |
4845 | IF constType=NulSym |
4846 | THEN | |
d5e2694e | 4847 | constType := GetConstLitType (tok, constName, overflow, TRUE) |
1eee94d3 GM |
4848 | END ; |
4849 | NewSym (Sym) ; | |
4850 | pSym := GetPsym (Sym) ; | |
4851 | WITH pSym^ DO | |
4852 | SymbolType := ConstLitSym ; | |
4853 | CASE SymbolType OF | |
4854 | ||
4855 | ConstLitSym : ConstLit.name := constName ; | |
4856 | ConstLit.Value := InitValue () ; | |
d5e2694e | 4857 | PushString (tok, constName, NOT overflow) ; |
1eee94d3 GM |
4858 | PopInto (ConstLit.Value) ; |
4859 | ConstLit.Type := constType ; | |
4860 | ConstLit.IsSet := FALSE ; | |
4861 | ConstLit.IsConstructor := FALSE ; | |
4862 | ConstLit.FromType := NulSym ; (* type is determined FromType *) | |
d5e2694e | 4863 | ConstLit.RangeError := overflow ; |
1eee94d3 | 4864 | ConstLit.UnresFromType := FALSE ; (* is Type resolved? *) |
d5e2694e | 4865 | ConstLit.Scope := GetCurrentScope () ; |
1eee94d3 GM |
4866 | InitWhereDeclaredTok (tok, ConstLit.At) ; |
4867 | InitWhereFirstUsedTok (tok, ConstLit.At) | |
4868 | ||
4869 | ELSE | |
4870 | InternalError ('expecting ConstLit symbol') | |
4871 | END | |
4872 | END ; | |
4873 | RETURN Sym | |
d5e2694e GM |
4874 | END CreateConstLit ; |
4875 | ||
4876 | ||
4877 | (* | |
4878 | LookupConstLitPoolEntry - return a ConstLit symbol from the constant pool which | |
4879 | matches tok, constName and constType. | |
4880 | *) | |
4881 | ||
4882 | PROCEDURE LookupConstLitPoolEntry (tok: CARDINAL; | |
4883 | constName: Name; constType: CARDINAL) : CARDINAL ; | |
4884 | VAR | |
4885 | pe : ConstLitPoolEntry ; | |
4886 | rootIndex: CARDINAL ; | |
4887 | BEGIN | |
4888 | rootIndex := GetSymKey (ConstLitPoolTree, constName) ; | |
4889 | IF rootIndex # 0 | |
4890 | THEN | |
4891 | pe := Indexing.GetIndice (ConstLitArray, rootIndex) ; | |
4892 | WHILE pe # NIL DO | |
4893 | IF (pe^.tok = tok) AND | |
4894 | (pe^.constName = constName) AND | |
4895 | (pe^.constType = constType) | |
4896 | THEN | |
4897 | RETURN pe^.sym | |
4898 | END ; | |
4899 | pe := pe^.next | |
4900 | END | |
4901 | END ; | |
4902 | RETURN NulSym | |
4903 | END LookupConstLitPoolEntry ; | |
4904 | ||
4905 | ||
4906 | (* | |
4907 | AddConstLitPoolEntry - adds sym to the constlit pool. | |
4908 | *) | |
4909 | ||
4910 | PROCEDURE AddConstLitPoolEntry (sym: CARDINAL; tok: CARDINAL; | |
4911 | constName: Name; constType: CARDINAL) ; | |
4912 | VAR | |
4913 | pe, old : ConstLitPoolEntry ; | |
4914 | rootIndex, high: CARDINAL ; | |
4915 | BEGIN | |
4916 | rootIndex := GetSymKey (ConstLitPoolTree, constName) ; | |
4917 | IF rootIndex = NulKey | |
4918 | THEN | |
4919 | high := Indexing.HighIndice (ConstLitArray) ; | |
4920 | NEW (pe) ; | |
4921 | IF pe = NIL | |
4922 | THEN | |
4923 | InternalError ('out of memory') | |
4924 | ELSE | |
4925 | pe^.sym := sym ; | |
4926 | pe^.tok := tok ; | |
4927 | pe^.constName := constName ; | |
4928 | pe^.constType := constType ; | |
4929 | pe^.next := NIL ; | |
4930 | PutSymKey (ConstLitPoolTree, constName, high+1) ; | |
4931 | Indexing.PutIndice (ConstLitArray, high+1, pe) | |
4932 | END | |
4933 | ELSE | |
4934 | NEW (pe) ; | |
4935 | IF pe = NIL | |
4936 | THEN | |
4937 | InternalError ('out of memory') | |
4938 | ELSE | |
4939 | old := Indexing.GetIndice (ConstLitArray, rootIndex) ; | |
4940 | pe^.sym := sym ; | |
4941 | pe^.tok := tok ; | |
4942 | pe^.constName := constName ; | |
4943 | pe^.constType := constType ; | |
4944 | pe^.next := old ; | |
4945 | Indexing.PutIndice (ConstLitArray, rootIndex, pe) | |
4946 | END | |
4947 | END | |
4948 | END AddConstLitPoolEntry ; | |
4949 | ||
4950 | ||
4951 | (* | |
4952 | MakeConstLit - returns a constant literal of type, constType, with a constName, | |
4953 | at location, tok. | |
4954 | *) | |
4955 | ||
4956 | PROCEDURE MakeConstLit (tok: CARDINAL; constName: Name; constType: CARDINAL) : CARDINAL ; | |
4957 | VAR | |
4958 | sym: CARDINAL ; | |
4959 | BEGIN | |
4960 | sym := LookupConstLitPoolEntry (tok, constName, constType) ; | |
4961 | IF sym = NulSym | |
4962 | THEN | |
4963 | sym := CreateConstLit (tok, constName, constType) ; | |
4964 | AddConstLitPoolEntry (sym, tok, constName, constType) | |
4965 | END ; | |
4966 | RETURN sym | |
1eee94d3 GM |
4967 | END MakeConstLit ; |
4968 | ||
4969 | ||
4970 | (* | |
4971 | MakeConstVar - makes a ConstVar type with | |
4972 | name ConstVarName. | |
4973 | *) | |
4974 | ||
4975 | PROCEDURE MakeConstVar (tok: CARDINAL; ConstVarName: Name) : CARDINAL ; | |
4976 | VAR | |
4977 | pSym: PtrToSymbol ; | |
4978 | Sym : CARDINAL ; | |
4979 | BEGIN | |
4980 | Sym := DeclareSym (tok, ConstVarName) ; | |
4981 | IF NOT IsError(Sym) | |
4982 | THEN | |
4983 | pSym := GetPsym(Sym) ; | |
4984 | WITH pSym^ DO | |
4985 | SymbolType := ConstVarSym ; | |
4986 | WITH ConstVar DO | |
4987 | name := ConstVarName ; | |
4988 | Value := InitValue() ; | |
4989 | Type := NulSym ; | |
4990 | IsSet := FALSE ; | |
4991 | IsConstructor := FALSE ; | |
4992 | FromType := NulSym ; (* type is determined FromType *) | |
4993 | UnresFromType := FALSE ; (* is Type resolved? *) | |
4994 | IsTemp := FALSE ; | |
d5e2694e | 4995 | Scope := GetCurrentScope () ; |
1eee94d3 GM |
4996 | InitWhereDeclaredTok (tok, At) |
4997 | END | |
4998 | END ; | |
4999 | (* Now add this constant to the symbol table of the current scope *) | |
5000 | AddSymToScope(Sym, ConstVarName) | |
5001 | END ; | |
5002 | RETURN( Sym ) | |
5003 | END MakeConstVar ; | |
5004 | ||
5005 | ||
5006 | (* | |
5007 | MakeConstLitString - put a constant which has the string described by | |
5008 | ConstName into the ConstantTree. | |
5009 | The symbol number is returned. | |
5010 | This symbol is known as a String Constant rather than a | |
5011 | ConstLit which indicates a number. | |
5012 | If the constant already exits | |
5013 | then a duplicate constant is not entered in the tree. | |
5014 | All values of constant strings | |
5015 | are ignored in Pass 1 and evaluated in Pass 2 via | |
5016 | character manipulation. | |
5017 | In this procedure ConstName is the string. | |
5018 | *) | |
5019 | ||
5020 | PROCEDURE MakeConstLitString (tok: CARDINAL; ConstName: Name) : CARDINAL ; | |
5021 | VAR | |
5022 | pSym: PtrToSymbol ; | |
5023 | sym : CARDINAL ; | |
5024 | BEGIN | |
5025 | sym := GetSymKey (ConstLitStringTree, ConstName) ; | |
5026 | IF sym=NulSym | |
5027 | THEN | |
5028 | NewSym (sym) ; | |
5029 | PutSymKey (ConstLitStringTree, ConstName, sym) ; | |
5030 | pSym := GetPsym (sym) ; | |
5031 | WITH pSym^ DO | |
5032 | SymbolType := ConstStringSym ; | |
5033 | CASE SymbolType OF | |
5034 | ||
5035 | ConstStringSym: InitConstString (tok, sym, ConstName, ConstName, | |
5036 | m2str, | |
5037 | sym, NulSym, NulSym, NulSym) | |
5038 | ||
5039 | ELSE | |
5040 | InternalError ('expecting ConstString symbol') | |
5041 | END | |
5042 | END | |
5043 | END ; | |
5044 | RETURN sym | |
5045 | END MakeConstLitString ; | |
5046 | ||
5047 | ||
5048 | (* | |
5049 | BackFillString - | |
5050 | *) | |
5051 | ||
5052 | PROCEDURE BackFillString (sym, m2sym, m2nulsym, csym, cnulsym: CARDINAL) ; | |
5053 | VAR | |
5054 | pSym: PtrToSymbol ; | |
5055 | BEGIN | |
5056 | IF sym # NulSym | |
5057 | THEN | |
5058 | pSym := GetPsym (sym) ; | |
5059 | WITH pSym^ DO | |
5060 | CASE SymbolType OF | |
5061 | ||
5062 | ConstStringSym: ConstString.M2Variant := m2sym ; | |
5063 | ConstString.NulM2Variant := m2nulsym ; | |
5064 | ConstString.CVariant := csym ; | |
5065 | ConstString.NulCVariant := cnulsym | |
5066 | ||
5067 | ELSE | |
5068 | InternalError ('expecting ConstStringSym') | |
5069 | END | |
5070 | END | |
5071 | END | |
5072 | END BackFillString ; | |
5073 | ||
5074 | ||
5075 | (* | |
5076 | InitConstString - initialize the constant string and back fill any | |
5077 | previous string variants. | |
5078 | *) | |
5079 | ||
5080 | PROCEDURE InitConstString (tok: CARDINAL; sym: CARDINAL; name, contents: Name; | |
5081 | kind: ConstStringVariant; | |
5082 | m2sym, m2nulsym, csym, cnulsym: CARDINAL) ; | |
5083 | VAR | |
5084 | pSym: PtrToSymbol ; | |
5085 | BEGIN | |
5086 | pSym := GetPsym (sym) ; | |
5087 | WITH pSym^ DO | |
5088 | SymbolType := ConstStringSym ; | |
5089 | CASE SymbolType OF | |
5090 | ||
5091 | ConstStringSym: ConstString.name := name ; | |
5092 | ConstString.StringVariant := kind ; | |
5093 | PutConstString (tok, sym, contents) ; | |
5094 | BackFillString (sym, | |
5095 | m2sym, m2nulsym, csym, cnulsym) ; | |
5096 | BackFillString (m2sym, | |
5097 | m2sym, m2nulsym, csym, cnulsym) ; | |
5098 | BackFillString (m2nulsym, | |
5099 | m2sym, m2nulsym, csym, cnulsym) ; | |
5100 | BackFillString (csym, | |
5101 | m2sym, m2nulsym, csym, cnulsym) ; | |
5102 | BackFillString (cnulsym, | |
5103 | m2sym, m2nulsym, csym, cnulsym) ; | |
5104 | ConstString.Scope := GetCurrentScope() ; | |
5105 | InitWhereDeclaredTok (tok, ConstString.At) | |
5106 | ||
5107 | ELSE | |
5108 | InternalError ('expecting ConstStringSym') | |
5109 | END | |
5110 | END | |
5111 | END InitConstString ; | |
5112 | ||
5113 | ||
5114 | (* | |
5115 | GetConstStringM2 - returns the Modula-2 variant of a string | |
5116 | (with no added nul terminator). | |
5117 | *) | |
5118 | ||
5119 | PROCEDURE GetConstStringM2 (sym: CARDINAL) : CARDINAL ; | |
5120 | VAR | |
5121 | pSym: PtrToSymbol ; | |
5122 | BEGIN | |
5123 | pSym := GetPsym (sym) ; | |
5124 | WITH pSym^ DO | |
5125 | CASE SymbolType OF | |
5126 | ||
5127 | ConstStringSym: RETURN ConstString.M2Variant | |
5128 | ||
5129 | ELSE | |
5130 | InternalError ('expecting ConstStringSym') | |
5131 | END | |
5132 | END | |
5133 | END GetConstStringM2 ; | |
5134 | ||
5135 | ||
5136 | (* | |
5137 | GetConstStringC - returns the C variant of a string | |
5138 | (with no added nul terminator). | |
5139 | *) | |
5140 | ||
5141 | PROCEDURE GetConstStringC (sym: CARDINAL) : CARDINAL ; | |
5142 | VAR | |
5143 | pSym: PtrToSymbol ; | |
5144 | BEGIN | |
5145 | pSym := GetPsym (sym) ; | |
5146 | WITH pSym^ DO | |
5147 | CASE SymbolType OF | |
5148 | ||
5149 | ConstStringSym: RETURN ConstString.CVariant | |
5150 | ||
5151 | ELSE | |
5152 | InternalError ('expecting ConstStringSym') | |
5153 | END | |
5154 | END | |
5155 | END GetConstStringC ; | |
5156 | ||
5157 | ||
5158 | (* | |
5159 | GetConstStringM2nul - returns the Modula-2 variant of a string | |
5160 | (with added nul terminator). | |
5161 | *) | |
5162 | ||
5163 | PROCEDURE GetConstStringM2nul (sym: CARDINAL) : CARDINAL ; | |
5164 | VAR | |
5165 | pSym: PtrToSymbol ; | |
5166 | BEGIN | |
5167 | pSym := GetPsym (sym) ; | |
5168 | WITH pSym^ DO | |
5169 | CASE SymbolType OF | |
5170 | ||
5171 | ConstStringSym: RETURN ConstString.NulM2Variant | |
5172 | ||
5173 | ELSE | |
5174 | InternalError ('expecting ConstStringSym') | |
5175 | END | |
5176 | END | |
5177 | END GetConstStringM2nul ; | |
5178 | ||
5179 | ||
5180 | (* | |
5181 | GetConstStringCnul - returns the C variant of a string | |
5182 | (with no added nul terminator). | |
5183 | *) | |
5184 | ||
5185 | PROCEDURE GetConstStringCnul (sym: CARDINAL) : CARDINAL ; | |
5186 | VAR | |
5187 | pSym: PtrToSymbol ; | |
5188 | BEGIN | |
5189 | pSym := GetPsym (sym) ; | |
5190 | WITH pSym^ DO | |
5191 | CASE SymbolType OF | |
5192 | ||
5193 | ConstStringSym: RETURN ConstString.NulCVariant | |
5194 | ||
5195 | ELSE | |
5196 | InternalError ('expecting ConstStringSym') | |
5197 | END | |
5198 | END | |
5199 | END GetConstStringCnul ; | |
5200 | ||
5201 | ||
5202 | (* | |
5203 | IsConstStringNulTerminated - returns TRUE if the constant string, sym, | |
5204 | should be created with a nul terminator. | |
5205 | *) | |
5206 | ||
5207 | PROCEDURE IsConstStringNulTerminated (sym: CARDINAL) : BOOLEAN ; | |
5208 | VAR | |
5209 | pSym: PtrToSymbol ; | |
5210 | BEGIN | |
5211 | pSym := GetPsym (sym) ; | |
5212 | WITH pSym^ DO | |
5213 | CASE SymbolType OF | |
5214 | ||
5215 | ConstStringSym: RETURN ((ConstString.StringVariant = m2nulstr) OR | |
5216 | (ConstString.StringVariant = cnulstr)) | |
5217 | ||
5218 | ELSE | |
5219 | InternalError ('expecting ConstStringSym') | |
5220 | END | |
5221 | END | |
5222 | END IsConstStringNulTerminated ; | |
5223 | ||
5224 | ||
5225 | (* | |
5226 | MakeConstStringCnul - creates a constant string nul terminated string suitable for C. | |
5227 | sym is a ConstString and a new symbol is returned | |
5228 | with the escape sequences converted into characters. | |
5229 | *) | |
5230 | ||
5231 | PROCEDURE MakeConstStringCnul (tok: CARDINAL; sym: CARDINAL) : CARDINAL ; | |
5232 | VAR | |
5233 | pSym : PtrToSymbol ; | |
5234 | newstr: CARDINAL ; | |
5235 | BEGIN | |
5236 | pSym := GetPsym (GetConstStringM2 (sym)) ; | |
5237 | WITH pSym^ DO | |
5238 | CASE SymbolType OF | |
5239 | ||
5240 | ConstStringSym: Assert (ConstString.StringVariant = m2str) ; | |
5241 | ConstString.CVariant := MakeConstStringC (tok, sym) ; | |
5242 | IF ConstString.NulCVariant = NulSym | |
5243 | THEN | |
5244 | NewSym (newstr) ; | |
5245 | ConstString.NulCVariant := newstr ; | |
5246 | InitConstString (tok, newstr, ConstString.name, GetString (ConstString.CVariant), | |
5247 | cnulstr, | |
5248 | ConstString.M2Variant, ConstString.NulM2Variant, ConstString.CVariant, ConstString.NulCVariant) | |
5249 | END ; | |
5250 | RETURN ConstString.NulCVariant | |
5251 | ||
5252 | ELSE | |
5253 | InternalError ('expecting ConstStringSym') | |
5254 | END | |
5255 | END | |
5256 | END MakeConstStringCnul ; | |
5257 | ||
5258 | ||
5259 | (* | |
5260 | MakeConstStringM2nul - creates a constant string nul terminated string. | |
5261 | sym is a ConstString and a new symbol is returned. | |
5262 | *) | |
5263 | ||
5264 | PROCEDURE MakeConstStringM2nul (tok: CARDINAL; sym: CARDINAL) : CARDINAL ; | |
5265 | VAR | |
5266 | pSym: PtrToSymbol ; | |
5267 | BEGIN | |
5268 | pSym := GetPsym (GetConstStringM2 (sym)) ; | |
5269 | WITH pSym^ DO | |
5270 | CASE SymbolType OF | |
5271 | ||
5272 | ConstStringSym: Assert (ConstString.StringVariant = m2str) ; | |
5273 | IF ConstString.NulM2Variant = NulSym | |
5274 | THEN | |
5275 | NewSym (ConstString.NulM2Variant) ; | |
5276 | InitConstString (tok, ConstString.NulM2Variant, | |
5277 | ConstString.name, ConstString.Contents, | |
5278 | m2nulstr, | |
5279 | ConstString.M2Variant, ConstString.NulM2Variant, | |
5280 | ConstString.CVariant, ConstString.NulCVariant) | |
5281 | END ; | |
5282 | RETURN ConstString.NulM2Variant | |
5283 | ||
5284 | ELSE | |
5285 | InternalError ('expecting ConstStringSym') | |
5286 | END | |
5287 | END | |
5288 | END MakeConstStringM2nul ; | |
5289 | ||
5290 | ||
5291 | (* | |
5292 | MakeConstStringC - creates a constant string suitable for C. | |
5293 | sym is a Modula-2 ConstString and a new symbol is returned | |
5294 | with the escape sequences converted into characters. | |
5295 | It is not nul terminated. | |
5296 | *) | |
5297 | ||
5298 | PROCEDURE MakeConstStringC (tok: CARDINAL; sym: CARDINAL) : CARDINAL ; | |
5299 | VAR | |
5300 | pSym : PtrToSymbol ; | |
5301 | s : String ; | |
5302 | BEGIN | |
5303 | pSym := GetPsym (sym) ; | |
5304 | WITH pSym^ DO | |
5305 | CASE SymbolType OF | |
5306 | ||
5307 | ConstStringSym: IF ConstString.StringVariant = cstr | |
5308 | THEN | |
5309 | RETURN sym (* this is already the C variant. *) | |
5310 | ELSIF ConstString.CVariant = NulSym | |
5311 | THEN | |
5312 | Assert (ConstString.StringVariant = m2str) ; (* we can only derive string variants from Modula-2 strings. *) | |
5313 | Assert (sym = ConstString.M2Variant) ; | |
5314 | (* we need to create a new one and return the new symbol. *) | |
5315 | s := HandleEscape (InitStringCharStar (KeyToCharStar (GetString (ConstString.M2Variant)))) ; | |
5316 | NewSym (ConstString.CVariant) ; | |
5317 | InitConstString (tok, ConstString.CVariant, ConstString.name, makekey (string (s)), | |
5318 | cstr, | |
5319 | ConstString.M2Variant, ConstString.NulM2Variant, ConstString.CVariant, ConstString.NulCVariant) ; | |
5320 | s := KillString (s) | |
5321 | END ; | |
5322 | RETURN ConstString.CVariant | |
5323 | ||
5324 | ELSE | |
5325 | InternalError ('expecting ConstStringSym') | |
5326 | END | |
5327 | END | |
5328 | END MakeConstStringC ; | |
5329 | ||
5330 | ||
5331 | (* | |
5332 | MakeConstString - puts a constant into the symboltable which is a string. | |
5333 | The string value is unknown at this time and will be | |
5334 | filled in later by PutString. | |
5335 | *) | |
5336 | ||
5337 | PROCEDURE MakeConstString (tok: CARDINAL; ConstName: Name) : CARDINAL ; | |
5338 | VAR | |
5339 | pSym: PtrToSymbol ; | |
5340 | sym : CARDINAL ; | |
5341 | BEGIN | |
5342 | NewSym (sym) ; | |
5343 | PutSymKey (ConstLitStringTree, ConstName, sym) ; | |
5344 | pSym := GetPsym (sym) ; | |
5345 | WITH pSym^ DO | |
5346 | SymbolType := ConstStringSym ; | |
5347 | CASE SymbolType OF | |
5348 | ||
5349 | ConstStringSym : InitConstString (tok, sym, ConstName, NulName, | |
5350 | m2str, sym, NulSym, NulSym, NulSym) | |
5351 | ||
5352 | ELSE | |
5353 | InternalError ('expecting ConstString symbol') | |
5354 | END | |
5355 | END ; | |
5356 | RETURN sym | |
5357 | END MakeConstString ; | |
5358 | ||
5359 | ||
5360 | (* | |
5361 | PutConstString - places a string, String, into a constant symbol, Sym. | |
5362 | Sym maybe a ConstString or a ConstVar. If the later is | |
5363 | true then the ConstVar is converted to a ConstString. | |
5364 | *) | |
5365 | ||
5366 | PROCEDURE PutConstString (tok: CARDINAL; sym: CARDINAL; contents: Name) ; | |
5367 | VAR | |
5368 | pSym: PtrToSymbol ; | |
5369 | BEGIN | |
5370 | pSym := GetPsym (sym) ; | |
5371 | WITH pSym^ DO | |
5372 | CASE SymbolType OF | |
5373 | ||
5374 | ConstStringSym: ConstString.Length := LengthKey (contents) ; | |
5375 | ConstString.Contents := contents ; | |
5376 | InitWhereFirstUsedTok (tok, ConstString.At) | | |
5377 | ||
5378 | ConstVarSym : (* ok altering this to ConstString *) | |
5379 | (* copy name and alter symbol. *) | |
5380 | InitConstString (tok, sym, ConstVar.name, contents, | |
5381 | m2str, | |
5382 | sym, NulSym, NulSym, NulSym) | |
5383 | ||
5384 | ELSE | |
5385 | InternalError ('expecting ConstString or ConstVar symbol') | |
5386 | END | |
5387 | END | |
5388 | END PutConstString ; | |
5389 | ||
5390 | ||
5391 | (* | |
5392 | IsConstStringM2 - returns whether this conststring is an unaltered Modula-2 string. | |
5393 | *) | |
5394 | ||
5395 | PROCEDURE IsConstStringM2 (sym: CARDINAL) : BOOLEAN ; | |
5396 | VAR | |
5397 | pSym: PtrToSymbol ; | |
5398 | BEGIN | |
5399 | pSym := GetPsym (sym) ; | |
5400 | WITH pSym^ DO | |
5401 | CASE SymbolType OF | |
5402 | ||
5403 | ConstStringSym: RETURN ConstString.StringVariant = m2str | |
5404 | ||
5405 | ELSE | |
5406 | InternalError ('expecting ConstString symbol') | |
5407 | END | |
5408 | END | |
5409 | END IsConstStringM2 ; | |
5410 | ||
5411 | ||
5412 | (* | |
5413 | IsConstStringC - returns whether this conststring is a C style string | |
5414 | which will have any escape translated. | |
5415 | *) | |
5416 | ||
5417 | PROCEDURE IsConstStringC (sym: CARDINAL) : BOOLEAN ; | |
5418 | VAR | |
5419 | pSym: PtrToSymbol ; | |
5420 | BEGIN | |
5421 | pSym := GetPsym (sym) ; | |
5422 | WITH pSym^ DO | |
5423 | CASE SymbolType OF | |
5424 | ||
5425 | ConstStringSym: RETURN ConstString.StringVariant = cstr | |
5426 | ||
5427 | ELSE | |
5428 | InternalError ('expecting ConstString symbol') | |
5429 | END | |
5430 | END | |
5431 | END IsConstStringC ; | |
5432 | ||
5433 | ||
5434 | (* | |
5435 | IsConstStringM2nul - returns whether this conststring is a Modula-2 string which | |
5436 | contains a nul terminator. | |
5437 | *) | |
5438 | ||
5439 | PROCEDURE IsConstStringM2nul (sym: CARDINAL) : BOOLEAN ; | |
5440 | VAR | |
5441 | pSym: PtrToSymbol ; | |
5442 | BEGIN | |
5443 | pSym := GetPsym (sym) ; | |
5444 | WITH pSym^ DO | |
5445 | CASE SymbolType OF | |
5446 | ||
5447 | ConstStringSym: RETURN ConstString.StringVariant = m2nulstr | |
5448 | ||
5449 | ELSE | |
5450 | InternalError ('expecting ConstString symbol') | |
5451 | END | |
5452 | END | |
5453 | END IsConstStringM2nul ; | |
5454 | ||
5455 | ||
5456 | (* | |
5457 | IsConstStringCnul - returns whether this conststring is a C style string | |
5458 | which will have any escape translated and also contains | |
5459 | a nul terminator. | |
5460 | *) | |
5461 | ||
5462 | PROCEDURE IsConstStringCnul (sym: CARDINAL) : BOOLEAN ; | |
5463 | VAR | |
5464 | pSym: PtrToSymbol ; | |
5465 | BEGIN | |
5466 | pSym := GetPsym (sym) ; | |
5467 | WITH pSym^ DO | |
5468 | CASE SymbolType OF | |
5469 | ||
5470 | ConstStringSym: RETURN ConstString.StringVariant = cnulstr | |
5471 | ||
5472 | ELSE | |
5473 | InternalError ('expecting ConstString symbol') | |
5474 | END | |
5475 | END | |
5476 | END IsConstStringCnul ; | |
5477 | ||
5478 | ||
5479 | (* | |
5480 | GetString - returns the contents of the string symbol sym, note that | |
5481 | this is not the same as GetName (unless it was a literal). | |
5482 | *) | |
5483 | ||
5484 | PROCEDURE GetString (Sym: CARDINAL) : Name ; | |
5485 | VAR | |
5486 | pSym: PtrToSymbol ; | |
5487 | BEGIN | |
5488 | pSym := GetPsym (Sym) ; | |
5489 | WITH pSym^ DO | |
5490 | CASE SymbolType OF | |
5491 | ||
5492 | ConstStringSym: RETURN ConstString.Contents | |
5493 | ||
5494 | ELSE | |
5495 | InternalError ('expecting ConstString symbol') | |
5496 | END | |
5497 | END | |
5498 | END GetString ; | |
5499 | ||
5500 | ||
5501 | (* | |
5502 | GetStringLength - returns the length of the string symbol Sym. | |
5503 | *) | |
5504 | ||
5505 | PROCEDURE GetStringLength (Sym: CARDINAL) : CARDINAL ; | |
5506 | VAR | |
5507 | pSym: PtrToSymbol ; | |
5508 | BEGIN | |
5509 | pSym := GetPsym (Sym) ; | |
5510 | WITH pSym^ DO | |
5511 | CASE SymbolType OF | |
5512 | ||
5513 | ConstStringSym: RETURN ConstString.Length | |
5514 | ||
5515 | ELSE | |
5516 | InternalError ('expecting ConstString symbol') | |
5517 | END | |
5518 | END | |
5519 | END GetStringLength ; | |
5520 | ||
5521 | ||
5522 | (* | |
5523 | PutVariableAtAddress - determines that a variable, sym, is declared at | |
5524 | a specific address. | |
5525 | *) | |
5526 | ||
5527 | PROCEDURE PutVariableAtAddress (sym: CARDINAL; address: CARDINAL) ; | |
5528 | VAR | |
5529 | pSym: PtrToSymbol ; | |
5530 | BEGIN | |
5531 | Assert(sym#NulSym) ; | |
5532 | pSym := GetPsym(sym) ; | |
5533 | WITH pSym^ DO | |
5534 | CASE SymbolType OF | |
5535 | ||
5536 | VarSym: Var.AtAddress := TRUE ; | |
5537 | Var.Address := address | |
5538 | ||
5539 | ELSE | |
5540 | InternalError ('expecting a variable symbol') | |
5541 | END | |
5542 | END | |
5543 | END PutVariableAtAddress ; | |
5544 | ||
5545 | ||
5546 | (* | |
5547 | GetVariableAtAddress - returns the address at which variable, sym, is declared. | |
5548 | *) | |
5549 | ||
5550 | PROCEDURE GetVariableAtAddress (sym: CARDINAL) : CARDINAL ; | |
5551 | VAR | |
5552 | pSym: PtrToSymbol ; | |
5553 | BEGIN | |
5554 | Assert(sym#NulSym) ; | |
5555 | pSym := GetPsym(sym) ; | |
5556 | WITH pSym^ DO | |
5557 | CASE SymbolType OF | |
5558 | ||
5559 | VarSym: RETURN( Var.Address ) | |
5560 | ||
5561 | ELSE | |
5562 | InternalError ('expecting a variable symbol') | |
5563 | END | |
5564 | END | |
5565 | END GetVariableAtAddress ; | |
5566 | ||
5567 | ||
5568 | (* | |
5569 | IsVariableAtAddress - returns TRUE if a variable, sym, was declared at | |
5570 | a specific address. | |
5571 | *) | |
5572 | ||
5573 | PROCEDURE IsVariableAtAddress (sym: CARDINAL) : BOOLEAN ; | |
5574 | VAR | |
5575 | pSym: PtrToSymbol ; | |
5576 | BEGIN | |
5577 | Assert(sym#NulSym) ; | |
5578 | pSym := GetPsym(sym) ; | |
5579 | WITH pSym^ DO | |
5580 | CASE SymbolType OF | |
5581 | ||
5582 | VarSym: RETURN( Var.AtAddress ) | |
5583 | ||
5584 | ELSE | |
5585 | InternalError ('expecting a variable symbol') | |
5586 | END | |
5587 | END | |
5588 | END IsVariableAtAddress ; | |
5589 | ||
5590 | ||
5591 | (* | |
5592 | PutVariableSSA - assigns value to the SSA field within variable sym. | |
5593 | *) | |
5594 | ||
5595 | PROCEDURE PutVariableSSA (sym: CARDINAL; value: BOOLEAN) ; | |
5596 | VAR | |
5597 | pSym: PtrToSymbol ; | |
5598 | BEGIN | |
5599 | Assert (sym#NulSym) ; | |
5600 | pSym := GetPsym (sym) ; | |
5601 | WITH pSym^ DO | |
5602 | CASE SymbolType OF | |
5603 | ||
5604 | VarSym: Var.IsSSA := value | |
5605 | ||
5606 | ELSE | |
5607 | InternalError ('expecting a variable symbol') | |
5608 | END | |
5609 | END | |
5610 | END PutVariableSSA ; | |
5611 | ||
5612 | ||
5613 | (* | |
5614 | IsVariableSSA - returns TRUE if variable is known to be a SSA. | |
5615 | *) | |
5616 | ||
5617 | PROCEDURE IsVariableSSA (sym: CARDINAL) : BOOLEAN ; | |
5618 | VAR | |
5619 | pSym: PtrToSymbol ; | |
5620 | BEGIN | |
5621 | Assert (sym#NulSym) ; | |
5622 | pSym := GetPsym (sym) ; | |
5623 | WITH pSym^ DO | |
5624 | CASE SymbolType OF | |
5625 | ||
5626 | VarSym: RETURN Var.IsSSA | |
5627 | ||
5628 | ELSE | |
5629 | InternalError ('expecting a variable symbol') | |
5630 | END | |
5631 | END | |
5632 | END IsVariableSSA ; | |
5633 | ||
5634 | ||
5635 | (* | |
5636 | PutPriority - places a interrupt, priority, value into module, module. | |
5637 | *) | |
5638 | ||
5639 | PROCEDURE PutPriority (module: CARDINAL; priority: CARDINAL) ; | |
5640 | VAR | |
5641 | pSym: PtrToSymbol ; | |
5642 | BEGIN | |
5643 | Assert(module#NulSym) ; | |
5644 | pSym := GetPsym(module) ; | |
5645 | WITH pSym^ DO | |
5646 | CASE SymbolType OF | |
5647 | ||
5648 | DefImpSym: DefImp.Priority := priority | | |
5649 | ModuleSym: Module.Priority := priority | |
5650 | ||
5651 | ELSE | |
5652 | InternalError ('expecting DefImp or Module symbol') | |
5653 | END | |
5654 | END | |
5655 | END PutPriority ; | |
5656 | ||
5657 | ||
5658 | (* | |
5659 | GetPriority - returns the interrupt priority which was assigned to | |
5660 | module, module. | |
5661 | *) | |
5662 | ||
5663 | PROCEDURE GetPriority (module: CARDINAL) : CARDINAL ; | |
5664 | VAR | |
5665 | pSym: PtrToSymbol ; | |
5666 | BEGIN | |
5667 | Assert(module#NulSym) ; | |
5668 | pSym := GetPsym(module) ; | |
5669 | WITH pSym^ DO | |
5670 | CASE SymbolType OF | |
5671 | ||
5672 | DefImpSym: RETURN( DefImp.Priority ) | | |
5673 | ModuleSym: RETURN( Module.Priority ) | |
5674 | ||
5675 | ELSE | |
5676 | InternalError ('expecting DefImp or Module symbol') | |
5677 | END | |
5678 | END | |
5679 | END GetPriority ; | |
5680 | ||
5681 | ||
5682 | (* | |
5683 | PutNeedSavePriority - set a boolean flag indicating that this procedure | |
5684 | needs to save and restore interrupts. | |
5685 | *) | |
5686 | ||
5687 | PROCEDURE PutNeedSavePriority (sym: CARDINAL) ; | |
5688 | VAR | |
5689 | pSym: PtrToSymbol ; | |
5690 | BEGIN | |
5691 | pSym := GetPsym(sym) ; | |
5692 | WITH pSym^ DO | |
5693 | CASE SymbolType OF | |
5694 | ||
5695 | ProcedureSym: Procedure.SavePriority := TRUE | |
5696 | ||
5697 | ELSE | |
5698 | InternalError ('expecting procedure symbol') | |
5699 | END | |
5700 | END | |
5701 | END PutNeedSavePriority ; | |
5702 | ||
5703 | ||
5704 | (* | |
5705 | GetNeedSavePriority - returns the boolean flag indicating whether this procedure | |
5706 | needs to save and restore interrupts. | |
5707 | *) | |
5708 | ||
5709 | PROCEDURE GetNeedSavePriority (sym: CARDINAL) : BOOLEAN ; | |
5710 | VAR | |
5711 | pSym: PtrToSymbol ; | |
5712 | BEGIN | |
5713 | pSym := GetPsym(sym) ; | |
5714 | WITH pSym^ DO | |
5715 | CASE SymbolType OF | |
5716 | ||
5717 | ProcedureSym: RETURN( Procedure.SavePriority ) | |
5718 | ||
5719 | ELSE | |
5720 | InternalError ('expecting procedure symbol') | |
5721 | END | |
5722 | END | |
5723 | END GetNeedSavePriority ; | |
5724 | ||
5725 | ||
5726 | (* | |
5727 | GetProcedureBuiltin - returns the builtin name for the equivalent procedure, Sym. | |
5728 | *) | |
5729 | ||
5730 | PROCEDURE GetProcedureBuiltin (Sym: CARDINAL) : Name ; | |
5731 | VAR | |
5732 | pSym: PtrToSymbol ; | |
5733 | BEGIN | |
5734 | pSym := GetPsym(Sym) ; | |
5735 | WITH pSym^ DO | |
5736 | CASE SymbolType OF | |
5737 | ||
5738 | ProcedureSym: RETURN( Procedure.BuiltinName ) | |
5739 | ||
5740 | ELSE | |
5741 | InternalError ('expecting procedure symbol') | |
5742 | END | |
5743 | END | |
5744 | END GetProcedureBuiltin ; | |
5745 | ||
5746 | ||
5747 | (* | |
5748 | PutProcedureBuiltin - assigns the builtin name for the equivalent procedure, Sym. | |
5749 | *) | |
5750 | ||
5751 | PROCEDURE PutProcedureBuiltin (Sym: CARDINAL; name: Name) ; | |
5752 | VAR | |
5753 | pSym: PtrToSymbol ; | |
5754 | BEGIN | |
5755 | pSym := GetPsym(Sym) ; | |
5756 | WITH pSym^ DO | |
5757 | CASE SymbolType OF | |
5758 | ||
5759 | ProcedureSym : Procedure.BuiltinName := name ; | |
5760 | Procedure.IsBuiltin := TRUE ; | |
5761 | (* we use the same extra pass method as hidden types for builtins *) | |
5762 | PutHiddenTypeDeclared | |
5763 | ||
5764 | ELSE | |
5765 | InternalError ('expecting procedure symbol') | |
5766 | END | |
5767 | END | |
5768 | END PutProcedureBuiltin ; | |
5769 | ||
5770 | ||
5771 | (* | |
5772 | IsProcedureBuiltin - returns TRUE if this procedure has a builtin equivalent. | |
5773 | *) | |
5774 | ||
5775 | PROCEDURE IsProcedureBuiltin (Sym: CARDINAL) : BOOLEAN ; | |
5776 | VAR | |
5777 | pSym: PtrToSymbol ; | |
5778 | BEGIN | |
5779 | pSym := GetPsym(Sym) ; | |
5780 | WITH pSym^ DO | |
5781 | CASE SymbolType OF | |
5782 | ||
5783 | ProcedureSym : RETURN( Procedure.IsBuiltin ) | |
5784 | ||
5785 | ELSE | |
5786 | InternalError ('expecting procedure symbol') | |
5787 | END | |
5788 | END | |
5789 | END IsProcedureBuiltin ; | |
5790 | ||
5791 | ||
81d5ca0b GM |
5792 | (* |
5793 | CanUseBuiltin - returns TRUE if the procedure, Sym, can be | |
5794 | inlined via a builtin function. | |
5795 | *) | |
5796 | ||
5797 | PROCEDURE CanUseBuiltin (Sym: CARDINAL) : BOOLEAN ; | |
5798 | BEGIN | |
5799 | RETURN( (NOT DebugBuiltins) AND | |
5800 | (BuiltinExists (KeyToCharStar (GetProcedureBuiltin (Sym))) OR | |
5801 | BuiltinExists (KeyToCharStar (GetSymName (Sym)))) ) | |
5802 | END CanUseBuiltin ; | |
5803 | ||
5804 | ||
5805 | (* | |
5806 | IsProcedureBuiltinAvailable - return TRUE if procedure is available as a builtin | |
5807 | for the target architecture. | |
5808 | *) | |
5809 | ||
5810 | PROCEDURE IsProcedureBuiltinAvailable (procedure: CARDINAL) : BOOLEAN ; | |
5811 | BEGIN | |
5812 | RETURN IsProcedureBuiltin (procedure) AND CanUseBuiltin (procedure) | |
5813 | END IsProcedureBuiltinAvailable ; | |
5814 | ||
5815 | ||
1eee94d3 GM |
5816 | (* |
5817 | PutProcedureInline - determines that procedure, Sym, has been requested to be inlined. | |
5818 | *) | |
5819 | ||
5820 | PROCEDURE PutProcedureInline (Sym: CARDINAL) ; | |
5821 | VAR | |
5822 | pSym: PtrToSymbol ; | |
5823 | BEGIN | |
5824 | pSym := GetPsym(Sym) ; | |
5825 | WITH pSym^ DO | |
5826 | CASE SymbolType OF | |
5827 | ||
5828 | ProcedureSym : Procedure.IsInline := TRUE ; | |
5829 | ||
5830 | ELSE | |
5831 | InternalError ('expecting procedure symbol') | |
5832 | END | |
5833 | END | |
5834 | END PutProcedureInline ; | |
5835 | ||
5836 | ||
5837 | (* | |
5838 | IsProcedureBuiltin - returns TRUE if this procedure was declared as inlined. | |
5839 | *) | |
5840 | ||
5841 | PROCEDURE IsProcedureInline (Sym: CARDINAL) : BOOLEAN ; | |
5842 | VAR | |
5843 | pSym: PtrToSymbol ; | |
5844 | BEGIN | |
5845 | pSym := GetPsym(Sym) ; | |
5846 | WITH pSym^ DO | |
5847 | CASE SymbolType OF | |
5848 | ||
5849 | ProcedureSym : RETURN( Procedure.IsInline ) | |
5850 | ||
5851 | ELSE | |
5852 | InternalError ('expecting procedure symbol') | |
5853 | END | |
5854 | END | |
5855 | END IsProcedureInline ; | |
5856 | ||
5857 | ||
5858 | (* | |
5859 | PutConstSet - informs the const var symbol, sym, that it is or will contain | |
5860 | a set value. | |
5861 | *) | |
5862 | ||
5863 | PROCEDURE PutConstSet (Sym: CARDINAL) ; | |
5864 | VAR | |
5865 | pSym: PtrToSymbol ; | |
5866 | BEGIN | |
5867 | pSym := GetPsym(Sym) ; | |
5868 | WITH pSym^ DO | |
5869 | CASE SymbolType OF | |
5870 | ||
5871 | ConstVarSym: ConstVar.IsSet := TRUE | | |
5872 | ConstLitSym: ConstLit.IsSet := TRUE | |
5873 | ||
5874 | ELSE | |
5875 | InternalError ('expecting ConstVar symbol') | |
5876 | END | |
5877 | END | |
5878 | END PutConstSet ; | |
5879 | ||
5880 | ||
5881 | (* | |
5882 | IsConstSet - returns TRUE if the constant is declared as a set. | |
5883 | *) | |
5884 | ||
5885 | PROCEDURE IsConstSet (Sym: CARDINAL) : BOOLEAN ; | |
5886 | VAR | |
5887 | pSym: PtrToSymbol ; | |
5888 | BEGIN | |
5889 | pSym := GetPsym(Sym) ; | |
5890 | WITH pSym^ DO | |
5891 | CASE SymbolType OF | |
5892 | ||
5893 | ConstVarSym: RETURN( ConstVar.IsSet ) | | |
5894 | ConstLitSym: RETURN( ConstLit.IsSet ) | |
5895 | ||
5896 | ELSE | |
5897 | RETURN( FALSE ) | |
5898 | END | |
5899 | END | |
5900 | END IsConstSet ; | |
5901 | ||
5902 | ||
5903 | (* | |
5904 | PutConstructor - informs the const var symbol, sym, that it is or | |
5905 | will contain a constructor (record, set or array) | |
5906 | value. | |
5907 | *) | |
5908 | ||
5909 | PROCEDURE PutConstructor (Sym: CARDINAL) ; | |
5910 | VAR | |
5911 | pSym: PtrToSymbol ; | |
5912 | BEGIN | |
5913 | pSym := GetPsym(Sym) ; | |
5914 | WITH pSym^ DO | |
5915 | CASE SymbolType OF | |
5916 | ||
5917 | ConstVarSym: ConstVar.IsConstructor := TRUE | | |
5918 | ConstLitSym: ConstLit.IsConstructor := TRUE | |
5919 | ||
5920 | ELSE | |
5921 | InternalError ('expecting ConstVar or ConstLit symbol') | |
5922 | END | |
5923 | END | |
5924 | END PutConstructor ; | |
5925 | ||
5926 | ||
5927 | (* | |
5928 | IsConstructor - returns TRUE if the constant is declared as a | |
5929 | constant set, array or record. | |
5930 | *) | |
5931 | ||
5932 | PROCEDURE IsConstructor (Sym: CARDINAL) : BOOLEAN ; | |
5933 | VAR | |
5934 | pSym: PtrToSymbol ; | |
5935 | BEGIN | |
5936 | pSym := GetPsym(Sym) ; | |
5937 | WITH pSym^ DO | |
5938 | CASE SymbolType OF | |
5939 | ||
5940 | ConstVarSym: RETURN( ConstVar.IsConstructor ) | | |
5941 | ConstLitSym: RETURN( ConstLit.IsConstructor ) | |
5942 | ||
5943 | ELSE | |
5944 | RETURN( FALSE ) | |
5945 | END | |
5946 | END | |
5947 | END IsConstructor ; | |
5948 | ||
5949 | ||
5950 | (* | |
5951 | PutConstructorFrom - sets the from type field in constructor, | |
5952 | Sym, to, from. | |
5953 | *) | |
5954 | ||
5955 | PROCEDURE PutConstructorFrom (Sym: CARDINAL; from: CARDINAL) ; | |
5956 | VAR | |
5957 | pSym: PtrToSymbol ; | |
5958 | BEGIN | |
5959 | pSym := GetPsym(Sym) ; | |
5960 | WITH pSym^ DO | |
5961 | CASE SymbolType OF | |
5962 | ||
5963 | ConstVarSym: ConstVar.FromType := from ; | |
5964 | ConstVar.UnresFromType := TRUE | | |
5965 | ConstLitSym: ConstLit.FromType := from ; | |
5966 | ConstLit.UnresFromType := TRUE | |
5967 | ||
5968 | ELSE | |
5969 | InternalError ('expecting ConstVar or ConstLit symbol') | |
5970 | END | |
5971 | END ; | |
5972 | IncludeItemIntoList(UnresolvedConstructorType, Sym) | |
5973 | END PutConstructorFrom ; | |
5974 | ||
5975 | ||
5976 | (* | |
5977 | InitPacked - initialise packedInfo to FALSE and NulSym. | |
5978 | *) | |
5979 | ||
5980 | PROCEDURE InitPacked (VAR packedInfo: PackedInfo) ; | |
5981 | BEGIN | |
5982 | WITH packedInfo DO | |
5983 | IsPacked := FALSE ; | |
5984 | PackedEquiv := NulSym | |
5985 | END | |
5986 | END InitPacked ; | |
5987 | ||
5988 | ||
5989 | (* | |
5990 | doEquivalent - create a packed equivalent symbol for, sym, and return the | |
5991 | new symbol. It sets both fields in packedInfo to FALSE | |
5992 | and the new symbol. | |
5993 | *) | |
5994 | ||
5995 | PROCEDURE doEquivalent (VAR packedInfo: PackedInfo; sym: CARDINAL) : CARDINAL ; | |
5996 | VAR | |
5997 | nSym: CARDINAL ; | |
5998 | pSym: PtrToSymbol ; | |
5999 | BEGIN | |
6000 | NewSym(nSym) ; | |
6001 | pSym := GetPsym(nSym) ; | |
6002 | WITH pSym^ DO | |
6003 | SymbolType := EquivSym ; | |
6004 | WITH Equiv DO | |
6005 | nonPacked := sym ; | |
6006 | packedInfo.IsPacked := TRUE ; | |
6007 | packedInfo.PackedEquiv := NulSym | |
6008 | END | |
6009 | END ; | |
6010 | packedInfo.IsPacked := FALSE ; | |
6011 | packedInfo.PackedEquiv := nSym ; | |
6012 | RETURN( nSym ) | |
6013 | END doEquivalent ; | |
6014 | ||
6015 | ||
6016 | (* | |
6017 | MakeEquivalent - return the equivalent packed symbol for, sym. | |
6018 | *) | |
6019 | ||
6020 | PROCEDURE MakeEquivalent (sym: CARDINAL) : CARDINAL ; | |
6021 | VAR | |
6022 | pSym: PtrToSymbol ; | |
6023 | BEGIN | |
6024 | pSym := GetPsym(sym) ; | |
6025 | WITH pSym^ DO | |
6026 | CASE SymbolType OF | |
6027 | ||
6028 | EnumerationSym: RETURN( doEquivalent(Enumeration.packedInfo, sym) ) | | |
6029 | SubrangeSym : RETURN( doEquivalent(Subrange.packedInfo, sym) ) | | |
6030 | TypeSym : RETURN( doEquivalent(Type.packedInfo, sym) ) | | |
6031 | SetSym : RETURN( doEquivalent(Set.packedInfo, sym) ) | |
6032 | ||
6033 | ELSE | |
6034 | InternalError ('expecting type, subrange or enumerated type symbol') | |
6035 | END | |
6036 | END | |
6037 | END MakeEquivalent ; | |
6038 | ||
6039 | ||
6040 | (* | |
6041 | GetEquivalent - | |
6042 | *) | |
6043 | ||
6044 | PROCEDURE GetEquivalent (VAR packedInfo: PackedInfo; sym: CARDINAL) : CARDINAL ; | |
6045 | BEGIN | |
6046 | WITH packedInfo DO | |
6047 | IF IsPacked | |
6048 | THEN | |
6049 | RETURN( sym ) | |
6050 | ELSIF PackedEquiv=NulSym | |
6051 | THEN | |
6052 | PackedEquiv := MakeEquivalent(sym) | |
6053 | END ; | |
6054 | RETURN( PackedEquiv ) | |
6055 | END | |
6056 | END GetEquivalent ; | |
6057 | ||
6058 | ||
6059 | (* | |
6060 | GetPackedEquivalent - returns the packed equivalent of type, sym. | |
6061 | sym must be a type, subrange or enumerated type. | |
6062 | *) | |
6063 | ||
6064 | PROCEDURE GetPackedEquivalent (sym: CARDINAL) : CARDINAL ; | |
6065 | VAR | |
6066 | pSym: PtrToSymbol ; | |
6067 | BEGIN | |
6068 | pSym := GetPsym(sym) ; | |
6069 | WITH pSym^ DO | |
6070 | CASE SymbolType OF | |
6071 | ||
6072 | EnumerationSym: RETURN( GetEquivalent(Enumeration.packedInfo, sym) ) | | |
6073 | SubrangeSym : RETURN( GetEquivalent(Subrange.packedInfo, sym) ) | | |
6074 | TypeSym : RETURN( GetEquivalent(Type.packedInfo, sym) ) | | |
6075 | SetSym : RETURN( GetEquivalent(Set.packedInfo, sym) ) | |
6076 | ||
6077 | ELSE | |
6078 | InternalError ('expecting type, subrange or enumerated type symbol') | |
6079 | END | |
6080 | END | |
6081 | END GetPackedEquivalent ; | |
6082 | ||
6083 | ||
6084 | (* | |
6085 | GetNonPackedEquivalent - returns the equivalent non packed symbol associated with, sym. | |
6086 | *) | |
6087 | ||
6088 | PROCEDURE GetNonPackedEquivalent (sym: CARDINAL) : CARDINAL ; | |
6089 | VAR | |
6090 | pSym: PtrToSymbol ; | |
6091 | BEGIN | |
6092 | pSym := GetPsym(sym) ; | |
6093 | WITH pSym^ DO | |
6094 | CASE SymbolType OF | |
6095 | ||
6096 | EquivSym: RETURN( Equiv.nonPacked ) | |
6097 | ||
6098 | ELSE | |
6099 | InternalError ('expecting equivalent symbol') | |
6100 | END | |
6101 | END | |
6102 | END GetNonPackedEquivalent ; | |
6103 | ||
6104 | ||
6105 | (* | |
6106 | IsEquivalent - returns TRUE if, sym, is an equivalent symbol. | |
6107 | *) | |
6108 | ||
6109 | PROCEDURE IsEquivalent (sym: CARDINAL) : BOOLEAN ; | |
6110 | VAR | |
6111 | pSym: PtrToSymbol ; | |
6112 | BEGIN | |
6113 | pSym := GetPsym(sym) ; | |
6114 | WITH pSym^ DO | |
6115 | CASE SymbolType OF | |
6116 | ||
6117 | EquivSym: RETURN( TRUE ) | |
6118 | ||
6119 | ELSE | |
6120 | RETURN( FALSE ) | |
6121 | END | |
6122 | END | |
6123 | END IsEquivalent ; | |
6124 | ||
6125 | ||
6126 | (* | |
6127 | MakeSubrange - makes a new symbol into a subrange type with | |
6128 | name SubrangeName. | |
6129 | *) | |
6130 | ||
6131 | PROCEDURE MakeSubrange (tok: CARDINAL; SubrangeName: Name) : CARDINAL ; | |
6132 | VAR | |
6133 | pSym : PtrToSymbol ; | |
6134 | sym, oaf: CARDINAL ; | |
6135 | BEGIN | |
6136 | sym := HandleHiddenOrDeclare (tok, SubrangeName, oaf) ; | |
6137 | IF NOT IsError(sym) | |
6138 | THEN | |
6139 | pSym := GetPsym(sym) ; | |
6140 | WITH pSym^ DO | |
6141 | SymbolType := SubrangeSym ; | |
6142 | WITH Subrange DO | |
6143 | name := SubrangeName ; | |
6144 | Low := NulSym ; (* Index to a symbol determining *) | |
6145 | (* the lower bound of subrange. *) | |
6146 | (* Points to a constant - *) | |
6147 | (* possibly created by *) | |
6148 | (* ConstExpression. *) | |
6149 | High := NulSym ; (* Index to a symbol determining *) | |
6150 | (* the lower bound of subrange. *) | |
6151 | (* Points to a constant - *) | |
6152 | (* possibly created by *) | |
6153 | (* ConstExpression. *) | |
6154 | Type := NulSym ; (* Index to a type. Determines *) | |
6155 | (* the type of subrange. *) | |
2b783fe2 | 6156 | Align := NulSym ; (* The alignment of this type. *) |
1eee94d3 GM |
6157 | InitPacked(packedInfo) ; (* not packed and no equivalent *) |
6158 | InitTree(ConstLitTree) ; (* constants of this type. *) | |
6159 | Size := InitValue() ; (* Size determines the type size *) | |
6160 | oafamily := oaf ; (* The unbounded sym for this *) | |
6161 | Scope := GetCurrentScope() ; (* Which scope created it *) | |
6162 | InitWhereDeclaredTok(tok, At) (* Declared here *) | |
6163 | END | |
6164 | END | |
6165 | END ; | |
6166 | ForeachOAFamily(oaf, doFillInOAFamily) ; | |
6167 | RETURN sym | |
6168 | END MakeSubrange ; | |
6169 | ||
6170 | ||
6171 | (* | |
6172 | MakeArray - makes an Array symbol with name ArrayName. | |
6173 | *) | |
6174 | ||
6175 | PROCEDURE MakeArray (tok: CARDINAL; ArrayName: Name) : CARDINAL ; | |
6176 | VAR | |
6177 | pSym : PtrToSymbol ; | |
6178 | sym, oaf: CARDINAL ; | |
6179 | BEGIN | |
6180 | sym := HandleHiddenOrDeclare (tok, ArrayName, oaf) ; | |
6181 | IF NOT IsError(sym) | |
6182 | THEN | |
6183 | pSym := GetPsym(sym) ; | |
6184 | WITH pSym^ DO | |
6185 | SymbolType := ArraySym ; | |
6186 | WITH Array DO | |
6187 | name := ArrayName ; | |
6188 | Subscript := NulSym ; (* Contains the array subscripts. *) | |
6189 | Size := InitValue() ; (* Size of array. *) | |
6190 | Offset := InitValue() ; (* Offset of array. *) | |
6191 | Type := NulSym ; (* The Array Type. ARRAY OF Type. *) | |
6192 | Large := FALSE ; (* is this array large? *) | |
6193 | Align := NulSym ; (* The alignment of this type. *) | |
6194 | oafamily := oaf ; (* The unbounded for this array *) | |
6195 | Scope := GetCurrentScope() ; (* Which scope created it *) | |
6196 | InitWhereDeclaredTok(tok, At) (* Declared here *) | |
6197 | END | |
6198 | END | |
6199 | END ; | |
6200 | ForeachOAFamily(oaf, doFillInOAFamily) ; | |
6201 | RETURN( sym ) | |
6202 | END MakeArray ; | |
6203 | ||
6204 | ||
6205 | (* | |
6206 | PutArrayLarge - indicates that this is a large array in which case | |
6207 | the interface to gcc maps this array from 0..high-low, | |
6208 | using an integer indice. | |
6209 | *) | |
6210 | ||
6211 | PROCEDURE PutArrayLarge (array: CARDINAL) ; | |
6212 | VAR | |
6213 | pSym: PtrToSymbol ; | |
6214 | BEGIN | |
6215 | IF NOT IsError(array) | |
6216 | THEN | |
6217 | Assert(IsArray(array)) ; | |
6218 | pSym := GetPsym(array) ; | |
6219 | WITH pSym^.Array DO | |
6220 | Large := TRUE | |
6221 | END | |
6222 | END | |
6223 | END PutArrayLarge ; | |
6224 | ||
6225 | ||
6226 | (* | |
6227 | IsArrayLarge - returns TRUE if we need to treat this as a large array. | |
6228 | *) | |
6229 | ||
6230 | PROCEDURE IsArrayLarge (array: CARDINAL) : BOOLEAN ; | |
6231 | VAR | |
6232 | pSym: PtrToSymbol ; | |
6233 | BEGIN | |
6234 | Assert(IsArray(array)) ; | |
6235 | pSym := GetPsym(array) ; | |
6236 | RETURN( pSym^.Array.Large ) | |
6237 | END IsArrayLarge ; | |
6238 | ||
6239 | ||
6240 | (* | |
6241 | GetModule - Returns the Module symbol for the module with name, name. | |
6242 | *) | |
6243 | ||
6244 | PROCEDURE GetModule (name: Name) : CARDINAL ; | |
6245 | BEGIN | |
6246 | RETURN( GetSymKey(ModuleTree, name) ) | |
6247 | END GetModule ; | |
6248 | ||
6249 | ||
6250 | (* | |
6251 | GetLowestType - Returns the lowest type in the type chain of | |
6252 | symbol Sym. | |
6253 | If NulSym is returned then we assume type unknown or | |
6254 | you have reqested the type of a base type. | |
6255 | *) | |
6256 | ||
6257 | PROCEDURE GetLowestType (Sym: CARDINAL) : CARDINAL ; | |
6258 | VAR | |
6259 | pSym: PtrToSymbol ; | |
6260 | type: CARDINAL ; | |
6261 | BEGIN | |
6262 | Assert(Sym#NulSym) ; | |
6263 | pSym := GetPsym(Sym) ; | |
6264 | WITH pSym^ DO | |
6265 | CASE SymbolType OF | |
6266 | ||
6267 | VarSym : type := Var.Type | | |
6268 | ConstLitSym : type := ConstLit.Type | | |
6269 | ConstVarSym : type := ConstVar.Type | | |
6270 | ConstStringSym : type := NulSym | (* No type for a string *) | |
6271 | TypeSym : type := Type.Type | | |
6272 | RecordFieldSym : type := RecordField.Type | | |
6273 | RecordSym : type := NulSym | (* No type for a record *) | |
6274 | EnumerationFieldSym : type := EnumerationField.Type | | |
6275 | EnumerationSym : type := NulSym | (* No type for enumeration *) | |
6276 | PointerSym : type := Sym | (* we don't go to Pointer.Type *) | |
6277 | ProcedureSym : type := Procedure.ReturnType | | |
6278 | ProcTypeSym : type := ProcType.ReturnType | | |
6279 | ParamSym : type := Param.Type | | |
6280 | VarParamSym : type := VarParam.Type | | |
6281 | SubrangeSym : type := Subrange.Type | | |
6282 | ArraySym : type := Array.Type | | |
6283 | SubscriptSym : type := Subscript.Type | | |
6284 | SetSym : type := Set.Type | | |
6285 | UnboundedSym : type := Unbounded.Type | | |
6286 | UndefinedSym : type := NulSym | | |
6287 | DummySym : type := NulSym | |
6288 | ||
6289 | ELSE | |
6290 | InternalError ('not implemented yet') | |
6291 | END | |
6292 | END ; | |
6293 | pSym := GetPsym(Sym) ; | |
6294 | IF (pSym^.SymbolType=TypeSym) AND (type=NulSym) | |
6295 | THEN | |
6296 | type := Sym (* Base Type *) | |
6297 | ELSIF (type#NulSym) AND IsType(type) AND (GetAlignment(type)=NulSym) | |
6298 | THEN | |
6299 | type := GetLowestType(type) (* Type def *) | |
6300 | END ; | |
6301 | RETURN( type ) | |
6302 | END GetLowestType ; | |
6303 | ||
6304 | ||
6305 | (* | |
6306 | doGetType - subsiduary helper procedure function of GetDType, GetSType and GetLType. | |
6307 | *) | |
6308 | ||
6309 | PROCEDURE doGetType (sym: CARDINAL; skipEquiv, skipAlign, skipHidden, skipBase: BOOLEAN) : CARDINAL ; | |
6310 | VAR | |
6311 | pSym: PtrToSymbol ; | |
6312 | type: CARDINAL ; | |
6313 | BEGIN | |
6314 | type := NulSym ; | |
6315 | Assert (sym # NulSym) ; | |
6316 | pSym := GetPsym (sym) ; | |
6317 | WITH pSym^ DO | |
6318 | CASE SymbolType OF | |
6319 | ||
6320 | OAFamilySym : type := OAFamily.SimpleType | | |
6321 | VarSym : type := GetTypeOfVar(sym) | | |
6322 | ConstLitSym : type := ConstLit.Type | | |
6323 | ConstVarSym : type := ConstVar.Type | | |
6324 | ConstStringSym : IF ConstString.Length=1 | |
6325 | THEN | |
6326 | type := Char | |
6327 | ELSE | |
6328 | type := NulSym (* No type for a string *) | |
6329 | END | | |
6330 | TypeSym : type := Type.Type | | |
6331 | RecordFieldSym : type := RecordField.Type | | |
6332 | RecordSym : type := NulSym | (* No type for a record *) | |
6333 | VarientSym : type := NulSym | (* No type for a record *) | |
6334 | EnumerationFieldSym : type := EnumerationField.Type | | |
6335 | EnumerationSym : type := NulSym | (* No type for enumeration *) | |
6336 | PointerSym : type := Pointer.Type | | |
6337 | ProcedureSym : type := Procedure.ReturnType | | |
6338 | ProcTypeSym : type := ProcType.ReturnType | | |
6339 | ParamSym : type := Param.Type | | |
6340 | VarParamSym : type := VarParam.Type | | |
6341 | SubrangeSym : type := Subrange.Type | | |
6342 | ArraySym : type := Array.Type | | |
6343 | SubscriptSym : type := Subscript.Type | | |
6344 | SetSym : type := Set.Type | | |
6345 | UnboundedSym : type := Unbounded.Type | | |
6346 | UndefinedSym : type := NulSym | | |
6347 | PartialUnboundedSym : type := PartialUnbounded.Type | | |
6348 | ObjectSym : type := NulSym | |
6349 | ||
6350 | ELSE | |
6351 | InternalError ('not implemented yet') | |
6352 | END | |
6353 | END ; | |
6354 | IF (type=NulSym) AND IsType(sym) AND (NOT skipBase) | |
6355 | THEN | |
6356 | RETURN sym (* sym is a base type *) | |
6357 | ELSIF type#NulSym | |
6358 | THEN | |
6359 | IF IsType(type) AND skipEquiv | |
6360 | THEN | |
6361 | IF (NOT IsHiddenType(type)) OR skipHidden | |
6362 | THEN | |
6363 | IF (GetAlignment(type)=NulSym) OR skipAlign | |
6364 | THEN | |
6365 | RETURN doGetType (type, skipEquiv, skipAlign, skipHidden, skipBase) | |
6366 | END | |
6367 | END | |
6368 | END | |
6369 | END ; | |
6370 | RETURN type | |
6371 | END doGetType ; | |
6372 | ||
6373 | ||
6374 | (* | |
6375 | GetLType - get lowest type. It returns the lowest type | |
6376 | of symbol, sym. It skips over type equivalences. | |
6377 | It will not skip over base types. | |
6378 | *) | |
6379 | ||
6380 | PROCEDURE GetLType (sym: CARDINAL) : CARDINAL ; | |
6381 | BEGIN | |
6382 | (* | |
6383 | Assert (doGetType (sym, TRUE, TRUE, TRUE, FALSE) = GetLowestType (sym)) ; | |
6384 | *) | |
6385 | RETURN doGetType (sym, TRUE, TRUE, TRUE, FALSE) | |
6386 | END GetLType ; | |
6387 | ||
6388 | ||
6389 | (* | |
6390 | GetSType - get source type. It returns the type closest | |
6391 | to the object. It does not skip over type | |
6392 | equivalences. It will skip over base types. | |
6393 | *) | |
6394 | ||
6395 | PROCEDURE GetSType (sym: CARDINAL) : CARDINAL ; | |
6396 | BEGIN | |
6397 | Assert (doGetType (sym, FALSE, FALSE, FALSE, TRUE) = GetType (sym)) ; | |
6398 | RETURN doGetType (sym, FALSE, FALSE, FALSE, TRUE) | |
6399 | END GetSType ; | |
6400 | ||
6401 | ||
6402 | (* | |
6403 | GetDType - get gcc declared type. It returns the type | |
6404 | of the object which is declared to GCC. | |
6405 | It does skip over type equivalences but only | |
6406 | if they do not contain a user alignment. | |
6407 | It does not skip over hidden types. | |
6408 | It does not skip over base types. | |
6409 | *) | |
6410 | ||
6411 | PROCEDURE GetDType (sym: CARDINAL) : CARDINAL ; | |
6412 | BEGIN | |
6413 | (* | |
6414 | Assert (doGetType (sym, TRUE, FALSE, FALSE, FALSE) = SkipType(GetType(sym))) ; | |
6415 | *) | |
6416 | RETURN doGetType (sym, TRUE, FALSE, FALSE, FALSE) | |
6417 | END GetDType ; | |
6418 | ||
6419 | ||
6420 | (* | |
6421 | GetTypeOfVar - returns the type of symbol, var. | |
6422 | *) | |
6423 | ||
6424 | PROCEDURE GetTypeOfVar (var: CARDINAL) : CARDINAL ; | |
6425 | VAR | |
6426 | pSym: PtrToSymbol ; | |
6427 | high: CARDINAL ; | |
6428 | BEGIN | |
6429 | pSym := GetPsym(var) ; | |
6430 | WITH pSym^ DO | |
6431 | CASE SymbolType OF | |
6432 | ||
6433 | VarSym: IF Var.IsTemp AND Var.IsComponentRef | |
6434 | THEN | |
6435 | high := Indexing.HighIndice(Var.list) ; | |
6436 | RETURN( GetType(GetFromIndex(Var.list, high)) ) | |
6437 | ELSE | |
6438 | RETURN( Var.Type ) | |
6439 | END | |
6440 | ||
6441 | ELSE | |
6442 | InternalError ('expecting a var symbol') | |
6443 | END | |
6444 | END | |
6445 | END GetTypeOfVar ; | |
6446 | ||
6447 | ||
6448 | (* | |
6449 | GetType - Returns the symbol that is the TYPE symbol to Sym. | |
6450 | If zero is returned then we assume type unknown. | |
6451 | *) | |
6452 | ||
6453 | PROCEDURE GetType (Sym: CARDINAL) : CARDINAL ; | |
6454 | VAR | |
6455 | pSym: PtrToSymbol ; | |
6456 | type: CARDINAL ; | |
6457 | BEGIN | |
6458 | Assert(Sym#NulSym) ; | |
6459 | pSym := GetPsym(Sym) ; | |
6460 | WITH pSym^ DO | |
6461 | CASE SymbolType OF | |
6462 | ||
6463 | OAFamilySym : type := OAFamily.SimpleType | | |
6464 | VarSym : type := GetTypeOfVar(Sym) | | |
6465 | ConstLitSym : type := ConstLit.Type | | |
6466 | ConstVarSym : type := ConstVar.Type | | |
6467 | ConstStringSym : IF ConstString.Length=1 | |
6468 | THEN | |
6469 | type := Char | |
6470 | ELSE | |
6471 | type := NulSym (* No type for a string *) | |
6472 | END | | |
6473 | TypeSym : type := Type.Type | | |
6474 | RecordFieldSym : type := RecordField.Type | | |
6475 | RecordSym : type := NulSym | (* No type for a record *) | |
6476 | VarientSym : type := NulSym | (* No type for a record *) | |
6477 | EnumerationFieldSym : type := EnumerationField.Type | | |
6478 | EnumerationSym : type := NulSym | (* No type for enumeration *) | |
6479 | PointerSym : type := Pointer.Type | | |
6480 | ProcedureSym : type := Procedure.ReturnType | | |
6481 | ProcTypeSym : type := ProcType.ReturnType | | |
6482 | ParamSym : type := Param.Type | | |
6483 | VarParamSym : type := VarParam.Type | | |
6484 | SubrangeSym : type := Subrange.Type | | |
6485 | ArraySym : type := Array.Type | | |
6486 | SubscriptSym : type := Subscript.Type | | |
6487 | SetSym : type := Set.Type | | |
6488 | UnboundedSym : type := Unbounded.Type | | |
6489 | UndefinedSym : type := NulSym | | |
6490 | PartialUnboundedSym : type := PartialUnbounded.Type | | |
6491 | ObjectSym : type := NulSym | |
6492 | ||
6493 | ELSE | |
6494 | InternalError ('not implemented yet') | |
6495 | END | |
6496 | END ; | |
6497 | RETURN( type ) | |
6498 | END GetType ; | |
6499 | ||
6500 | ||
6501 | (* | |
6502 | SkipType - if sym is a TYPE foo = bar | |
6503 | then call SkipType(bar) | |
6504 | else return sym | |
6505 | ||
6506 | it does not skip over hidden types. | |
6507 | *) | |
6508 | ||
6509 | PROCEDURE SkipType (Sym: CARDINAL) : CARDINAL ; | |
6510 | BEGIN | |
6511 | IF (Sym#NulSym) AND IsType(Sym) AND | |
6512 | (NOT IsHiddenType(Sym)) AND (GetType(Sym)#NulSym) | |
6513 | THEN | |
6514 | RETURN( SkipType(GetType(Sym)) ) | |
6515 | ELSE | |
6516 | RETURN( Sym ) | |
6517 | END | |
6518 | END SkipType ; | |
6519 | ||
6520 | ||
6521 | (* | |
6522 | SkipTypeAndSubrange - if sym is a TYPE foo = bar OR | |
6523 | sym is declared as a subrange of bar | |
6524 | then call SkipTypeAndSubrange(bar) | |
6525 | else return sym | |
6526 | ||
6527 | it does not skip over hidden types. | |
6528 | *) | |
6529 | ||
6530 | PROCEDURE SkipTypeAndSubrange (Sym: CARDINAL) : CARDINAL ; | |
6531 | BEGIN | |
6532 | IF (Sym#NulSym) AND (IsType(Sym) OR IsSubrange(Sym)) AND | |
6533 | (NOT IsHiddenType(Sym)) AND (GetType(Sym)#NulSym) | |
6534 | THEN | |
6535 | RETURN( SkipTypeAndSubrange(GetType(Sym)) ) | |
6536 | ELSE | |
6537 | RETURN( Sym ) | |
6538 | END | |
6539 | END SkipTypeAndSubrange ; | |
6540 | ||
6541 | ||
6542 | (* | |
6543 | IsHiddenType - returns TRUE if, Sym, is a Type and is also declared as a hidden type. | |
6544 | *) | |
6545 | ||
6546 | PROCEDURE IsHiddenType (Sym: CARDINAL) : BOOLEAN ; | |
6547 | VAR | |
6548 | pSym: PtrToSymbol ; | |
6549 | BEGIN | |
6550 | pSym := GetPsym(Sym) ; | |
6551 | WITH pSym^ DO | |
6552 | CASE SymbolType OF | |
6553 | ||
6554 | TypeSym: RETURN( Type.IsHidden ) | |
6555 | ||
6556 | ELSE | |
6557 | RETURN( FALSE ) | |
6558 | END | |
6559 | END | |
6560 | END IsHiddenType ; | |
6561 | ||
6562 | ||
6563 | (* | |
6564 | GetConstLitType - returns the type of the constant of, name. | |
6565 | All floating point constants have type LONGREAL. | |
6566 | Character constants are type CHAR. | |
6567 | Integer values are INTEGER, LONGINT or LONGCARD | |
6568 | depending upon their value. | |
6569 | *) | |
6570 | ||
370298f4 GM |
6571 | PROCEDURE GetConstLitType (tok: CARDINAL; name: Name; |
6572 | VAR overflow: BOOLEAN; issueError: BOOLEAN) : CARDINAL ; | |
1eee94d3 | 6573 | VAR |
68201409 GM |
6574 | loc: location_t ; |
6575 | s : String ; | |
1eee94d3 GM |
6576 | BEGIN |
6577 | s := InitStringCharStar (KeyToCharStar (name)) ; | |
6578 | IF char (s, -1) = 'C' | |
6579 | THEN | |
6580 | s := KillString (s) ; | |
6581 | RETURN Char | |
6582 | ELSE | |
6583 | IF Index (s, '.', 0) # -1 (* found a '.' in our constant *) | |
6584 | THEN | |
6585 | s := KillString (s) ; | |
6586 | RETURN RType | |
6587 | END ; | |
6588 | loc := TokenToLocation (tok) ; | |
6589 | CASE char (s, -1) OF | |
6590 | ||
9693459e GM |
6591 | 'H': overflow := OverflowZType (loc, string (s), 16, issueError) | |
6592 | 'B': overflow := OverflowZType (loc, string (s), 8, issueError) | | |
6593 | 'A': overflow := OverflowZType (loc, string (s), 2, issueError) | |
1eee94d3 GM |
6594 | |
6595 | ELSE | |
9693459e | 6596 | overflow := OverflowZType (loc, string (s), 10, issueError) |
1eee94d3 GM |
6597 | END ; |
6598 | s := KillString (s) ; | |
1eee94d3 GM |
6599 | RETURN ZType |
6600 | END | |
6601 | END GetConstLitType ; | |
6602 | ||
6603 | ||
6604 | (* | |
6605 | GetLocalSym - only searches the scope Sym for a symbol with name | |
6606 | and returns the index to the symbol. | |
6607 | *) | |
6608 | ||
6609 | PROCEDURE GetLocalSym (Sym: CARDINAL; name: Name) : CARDINAL ; | |
6610 | VAR | |
6611 | pSym : PtrToSymbol ; | |
6612 | LocalSym: CARDINAL ; | |
6613 | BEGIN | |
6614 | (* | |
6615 | WriteString('Attempting to retrieve symbol from ') ; WriteKey(GetSymName(Sym)) ; | |
6616 | WriteString(' local symbol table') ; WriteLn ; | |
6617 | *) | |
6618 | pSym := GetPsym(Sym) ; | |
6619 | WITH pSym^ DO | |
6620 | CASE SymbolType OF | |
6621 | ||
6622 | EnumerationSym : LocalSym := GetSymKey(Enumeration.LocalSymbols, name) | | |
6623 | RecordSym : LocalSym := GetSymKey(Record.LocalSymbols, name) | | |
6624 | ProcedureSym : LocalSym := GetSymKey(Procedure.LocalSymbols, name) | | |
6625 | ModuleSym : LocalSym := GetSymKey(Module.LocalSymbols, name) | | |
6626 | DefImpSym : LocalSym := GetSymKey(DefImp.LocalSymbols, name) | |
6627 | ||
6628 | ELSE | |
6629 | InternalError ('symbol does not have a LocalSymbols field') | |
6630 | END | |
6631 | END ; | |
6632 | RETURN( LocalSym ) | |
6633 | END GetLocalSym ; | |
6634 | ||
6635 | ||
6636 | (* | |
6637 | GetNthFromComponent - | |
6638 | *) | |
6639 | ||
6640 | PROCEDURE GetNthFromComponent (Sym: CARDINAL; n: CARDINAL) : CARDINAL ; | |
6641 | VAR | |
6642 | pSym: PtrToSymbol ; | |
6643 | BEGIN | |
6644 | pSym := GetPsym(Sym) ; | |
6645 | WITH pSym^ DO | |
6646 | CASE SymbolType OF | |
6647 | ||
6648 | VarSym: IF IsComponent(Sym) | |
6649 | THEN | |
6650 | IF InBounds(Var.list, n) | |
6651 | THEN | |
6652 | RETURN( GetFromIndex(Var.list, n) ) | |
6653 | ELSE | |
6654 | RETURN( NulSym ) | |
6655 | END | |
6656 | ELSE | |
6657 | InternalError ('cannot GetNth from this symbol') | |
6658 | END | |
6659 | ||
6660 | ELSE | |
6661 | InternalError ('cannot GetNth from this symbol') | |
6662 | END | |
6663 | END | |
6664 | END GetNthFromComponent ; | |
6665 | ||
6666 | ||
6667 | (* | |
89b58667 GM |
6668 | GetNth - returns the n th symbol in the list associated with the scope |
6669 | of Sym. Sym may be a Module, DefImp, Procedure, Record or | |
6670 | Enumeration symbol. | |
1eee94d3 GM |
6671 | *) |
6672 | ||
6673 | PROCEDURE GetNth (Sym: CARDINAL; n: CARDINAL) : CARDINAL ; | |
6674 | VAR | |
6675 | pSym: PtrToSymbol ; | |
6676 | i : CARDINAL ; | |
6677 | BEGIN | |
6678 | pSym := GetPsym(Sym) ; | |
6679 | WITH pSym^ DO | |
6680 | CASE SymbolType OF | |
6681 | ||
89b58667 GM |
6682 | RecordSym : i := GetItemFromList (Record.ListOfSons, n) | |
6683 | VarientSym : i := GetItemFromList (Varient.ListOfSons, n) | | |
6684 | VarientFieldSym : i := GetItemFromList (VarientField.ListOfSons, n) | | |
6685 | ProcedureSym : i := GetItemFromList (Procedure.ListOfVars, n) | | |
6686 | DefImpSym : i := GetItemFromList (DefImp.ListOfVars, n) | | |
6687 | ModuleSym : i := GetItemFromList (Module.ListOfVars, n) | | |
6688 | TupleSym : i := GetFromIndex (Tuple.list, n) | | |
6689 | VarSym : i := GetNthFromComponent (Sym, n) | | |
6690 | EnumerationSym : i := GetItemFromList (Enumeration.ListOfFields, n) | |
1eee94d3 GM |
6691 | |
6692 | ELSE | |
6693 | InternalError ('cannot GetNth from this symbol') | |
6694 | END | |
6695 | END ; | |
6696 | RETURN( i ) | |
6697 | END GetNth ; | |
6698 | ||
6699 | ||
6700 | (* | |
6701 | GetNthParam - returns the n th parameter of a procedure Sym. | |
6702 | *) | |
6703 | ||
6704 | PROCEDURE GetNthParam (Sym: CARDINAL; ParamNo: CARDINAL) : CARDINAL ; | |
6705 | VAR | |
6706 | pSym: PtrToSymbol ; | |
6707 | i : CARDINAL ; | |
6708 | BEGIN | |
6709 | IF ParamNo=0 | |
6710 | THEN | |
6711 | (* Demands the return type of the function *) | |
6712 | i := GetType(Sym) | |
6713 | ELSE | |
6714 | pSym := GetPsym(Sym) ; | |
6715 | WITH pSym^ DO | |
6716 | CASE SymbolType OF | |
6717 | ||
6718 | ProcedureSym: i := GetItemFromList(Procedure.ListOfParam, ParamNo) | | |
6719 | ProcTypeSym : i := GetItemFromList(ProcType.ListOfParam, ParamNo) | |
6720 | ||
6721 | ELSE | |
6722 | InternalError ('expecting ProcedureSym or ProcTypeSym') | |
6723 | END | |
6724 | END | |
6725 | END ; | |
6726 | RETURN( i ) | |
6727 | END GetNthParam ; | |
6728 | ||
6729 | ||
6730 | (* | |
6731 | The Following procedures fill in the symbol table with the | |
6732 | symbol entities. | |
6733 | *) | |
6734 | ||
6735 | (* | |
6736 | PutVar - gives the VarSym symbol Sym a type Type. | |
6737 | *) | |
6738 | ||
6739 | PROCEDURE PutVar (Sym: CARDINAL; VarType: CARDINAL) ; | |
6740 | VAR | |
6741 | pSym: PtrToSymbol ; | |
6742 | BEGIN | |
6743 | pSym := GetPsym(Sym) ; | |
6744 | WITH pSym^ DO | |
6745 | CASE SymbolType OF | |
6746 | ||
b0762d4c GM |
6747 | VarSym : Var.Type := VarType ; |
6748 | ConfigSymInit (Var.InitState[LeftValue], Sym) ; | |
6749 | ConfigSymInit (Var.InitState[RightValue], Sym) | | |
1eee94d3 GM |
6750 | ConstVarSym: ConstVar.Type := VarType |
6751 | ||
6752 | ELSE | |
6753 | InternalError ('expecting VarSym or ConstVarSym') | |
6754 | END | |
6755 | END | |
6756 | END PutVar ; | |
6757 | ||
6758 | ||
6759 | (* | |
6760 | PutLeftValueFrontBackType - gives the variable symbol a front and backend type. | |
6761 | The variable must be a LeftValue. | |
6762 | *) | |
6763 | ||
6764 | PROCEDURE PutLeftValueFrontBackType (Sym: CARDINAL; FrontType, BackType: CARDINAL) ; | |
6765 | VAR | |
6766 | pSym: PtrToSymbol ; | |
6767 | BEGIN | |
6768 | Assert(GetMode(Sym)=LeftValue) ; | |
6769 | pSym := GetPsym(Sym) ; | |
6770 | WITH pSym^ DO | |
6771 | CASE SymbolType OF | |
6772 | ||
6773 | VarSym : Var.Type := FrontType ; | |
6774 | Var.BackType := BackType ; | |
6775 | PushSize(Address) ; | |
6776 | PopInto(Var.Size) | |
6777 | ||
6778 | ELSE | |
6779 | InternalError ('expecting VarSym') | |
6780 | END | |
6781 | END | |
6782 | END PutLeftValueFrontBackType ; | |
6783 | ||
6784 | ||
6785 | (* | |
6786 | GetVarBackEndType - returns the back end type if specified. | |
6787 | *) | |
6788 | ||
6789 | PROCEDURE GetVarBackEndType (Sym: CARDINAL) : CARDINAL ; | |
6790 | VAR | |
6791 | pSym: PtrToSymbol ; | |
6792 | BEGIN | |
6793 | Assert(Sym#NulSym) ; | |
6794 | pSym := GetPsym(Sym) ; | |
6795 | WITH pSym^ DO | |
6796 | CASE SymbolType OF | |
6797 | ||
6798 | VarSym: RETURN( Var.BackType ) | |
6799 | ||
6800 | ELSE | |
6801 | RETURN( NulSym ) | |
6802 | END | |
6803 | END | |
6804 | END GetVarBackEndType ; | |
6805 | ||
6806 | ||
6807 | (* | |
6808 | PutVarPointerCheck - marks variable, sym, as requiring (or not | |
6809 | depending upon the, value), a NIL pointer check | |
6810 | when this symbol is dereferenced. | |
6811 | *) | |
6812 | ||
6813 | PROCEDURE PutVarPointerCheck (sym: CARDINAL; value: BOOLEAN) ; | |
6814 | VAR | |
6815 | pSym: PtrToSymbol ; | |
6816 | BEGIN | |
6817 | IF IsVar(sym) | |
6818 | THEN | |
6819 | pSym := GetPsym(sym) ; | |
6820 | WITH pSym^.Var DO | |
6821 | IsPointerCheck := value | |
6822 | END | |
6823 | END | |
6824 | END PutVarPointerCheck ; | |
6825 | ||
6826 | ||
6827 | (* | |
6828 | GetVarPointerCheck - returns TRUE if this symbol is a variable and | |
6829 | has been marked as needing a pointer via NIL check. | |
6830 | *) | |
6831 | ||
6832 | PROCEDURE GetVarPointerCheck (sym: CARDINAL) : BOOLEAN ; | |
6833 | VAR | |
6834 | pSym: PtrToSymbol ; | |
6835 | BEGIN | |
6836 | IF IsVar(sym) | |
6837 | THEN | |
6838 | pSym := GetPsym(sym) ; | |
6839 | WITH pSym^.Var DO | |
6840 | RETURN( IsPointerCheck ) | |
6841 | END | |
d5e2694e GM |
6842 | END ; |
6843 | RETURN FALSE | |
1eee94d3 GM |
6844 | END GetVarPointerCheck ; |
6845 | ||
6846 | ||
6847 | (* | |
6848 | PutVarWritten - marks variable, sym, as being written to (or not | |
6849 | depending upon the, value). | |
6850 | *) | |
6851 | ||
6852 | PROCEDURE PutVarWritten (sym: CARDINAL; value: BOOLEAN) ; | |
6853 | VAR | |
6854 | pSym: PtrToSymbol ; | |
6855 | BEGIN | |
6856 | IF IsVar(sym) | |
6857 | THEN | |
6858 | pSym := GetPsym(sym) ; | |
6859 | WITH pSym^.Var DO | |
6860 | IsWritten := value | |
6861 | END | |
6862 | END | |
6863 | END PutVarWritten ; | |
6864 | ||
6865 | ||
6866 | (* | |
6867 | GetVarWritten - returns TRUE if this symbol is a variable and | |
6868 | has been marked as being written. | |
6869 | *) | |
6870 | ||
6871 | PROCEDURE GetVarWritten (sym: CARDINAL) : BOOLEAN ; | |
6872 | VAR | |
6873 | pSym: PtrToSymbol ; | |
6874 | BEGIN | |
6875 | pSym := GetPsym(sym) ; | |
6876 | WITH pSym^ DO | |
6877 | CASE SymbolType OF | |
6878 | ||
6879 | VarSym: RETURN( Var.IsWritten ) | |
6880 | ||
6881 | ELSE | |
6882 | InternalError ('expecting VarSym') | |
6883 | END | |
6884 | END | |
6885 | END GetVarWritten ; | |
6886 | ||
6887 | ||
6888 | (* | |
6889 | PutVarConst - sets the IsConst field to value indicating the variable is read only. | |
6890 | *) | |
6891 | ||
6892 | PROCEDURE PutVarConst (sym: CARDINAL; value: BOOLEAN) ; | |
6893 | VAR | |
6894 | pSym: PtrToSymbol ; | |
6895 | BEGIN | |
6896 | IF IsVar (sym) | |
6897 | THEN | |
6898 | pSym := GetPsym (sym) ; | |
6899 | pSym^.Var.IsConst := value | |
6900 | END | |
6901 | END PutVarConst ; | |
6902 | ||
6903 | ||
6904 | (* | |
6905 | IsVarConst - returns the IsConst field indicating the variable is read only. | |
6906 | *) | |
6907 | ||
6908 | PROCEDURE IsVarConst (sym: CARDINAL) : BOOLEAN ; | |
6909 | VAR | |
6910 | pSym: PtrToSymbol ; | |
6911 | BEGIN | |
6912 | pSym := GetPsym(sym) ; | |
6913 | WITH pSym^ DO | |
6914 | CASE SymbolType OF | |
6915 | ||
6916 | VarSym: RETURN( Var.IsConst ) | |
6917 | ||
6918 | ELSE | |
6919 | InternalError ('expecting VarSym') | |
6920 | END | |
6921 | END | |
6922 | END IsVarConst ; | |
6923 | ||
6924 | ||
6925 | (* | |
6926 | PutConst - gives the constant symbol Sym a type ConstType. | |
6927 | *) | |
6928 | ||
6929 | PROCEDURE PutConst (Sym: CARDINAL; ConstType: CARDINAL) ; | |
6930 | VAR | |
6931 | pSym: PtrToSymbol ; | |
6932 | BEGIN | |
6933 | pSym := GetPsym(Sym) ; | |
6934 | WITH pSym^ DO | |
6935 | CASE SymbolType OF | |
6936 | ||
6937 | ConstVarSym: ConstVar.Type := ConstType | |
6938 | ||
6939 | ELSE | |
6940 | InternalError ('expecting ConstVarSym') | |
6941 | END | |
6942 | END | |
6943 | END PutConst ; | |
6944 | ||
6945 | ||
40b91158 GM |
6946 | (* |
6947 | PutVarArrayRef - assigns ArrayRef field with value. | |
6948 | *) | |
6949 | ||
6950 | PROCEDURE PutVarArrayRef (sym: CARDINAL; value: BOOLEAN) ; | |
6951 | VAR | |
6952 | pSym: PtrToSymbol ; | |
6953 | BEGIN | |
6954 | pSym := GetPsym(sym) ; | |
6955 | WITH pSym^ DO | |
6956 | CASE SymbolType OF | |
6957 | ||
6958 | VarSym: Var.ArrayRef := value | |
6959 | ||
6960 | ELSE | |
6961 | InternalError ('expecting VarSym') | |
6962 | END | |
6963 | END | |
6964 | END PutVarArrayRef ; | |
6965 | ||
6966 | ||
6967 | (* | |
6968 | IsVarArrayRef - returns ArrayRef field value. | |
6969 | *) | |
6970 | ||
6971 | PROCEDURE IsVarArrayRef (sym: CARDINAL) : BOOLEAN ; | |
6972 | VAR | |
6973 | pSym: PtrToSymbol ; | |
6974 | BEGIN | |
6975 | pSym := GetPsym(sym) ; | |
6976 | WITH pSym^ DO | |
6977 | CASE SymbolType OF | |
6978 | ||
6979 | VarSym: RETURN (Var.ArrayRef) | |
6980 | ||
6981 | ELSE | |
6982 | InternalError ('expecting VarSym') | |
6983 | END | |
6984 | END | |
6985 | END IsVarArrayRef ; | |
6986 | ||
6987 | ||
b80e3c46 GM |
6988 | (* |
6989 | PutVarHeap - assigns ArrayRef field with value. | |
6990 | *) | |
6991 | ||
6992 | PROCEDURE PutVarHeap (sym: CARDINAL; value: BOOLEAN) ; | |
6993 | VAR | |
6994 | pSym: PtrToSymbol ; | |
6995 | BEGIN | |
6996 | pSym := GetPsym(sym) ; | |
6997 | WITH pSym^ DO | |
6998 | CASE SymbolType OF | |
6999 | ||
7000 | VarSym: Var.Heap := value | |
7001 | ||
7002 | ELSE | |
7003 | InternalError ('expecting VarSym') | |
7004 | END | |
7005 | END | |
7006 | END PutVarHeap ; | |
7007 | ||
7008 | ||
7009 | (* | |
7010 | IsVarHeap - returns ArrayRef field value. | |
7011 | *) | |
7012 | ||
7013 | PROCEDURE IsVarHeap (sym: CARDINAL) : BOOLEAN ; | |
7014 | VAR | |
7015 | pSym: PtrToSymbol ; | |
7016 | BEGIN | |
7017 | pSym := GetPsym(sym) ; | |
7018 | WITH pSym^ DO | |
7019 | CASE SymbolType OF | |
7020 | ||
7021 | VarSym: RETURN (Var.Heap) | |
7022 | ||
7023 | ELSE | |
7024 | InternalError ('expecting VarSym') | |
7025 | END | |
7026 | END | |
7027 | END IsVarHeap ; | |
7028 | ||
7029 | ||
1eee94d3 GM |
7030 | (* |
7031 | PutFieldRecord - places a field, FieldName and FieldType into a record, Sym. | |
7032 | VarSym is a optional varient symbol which can be returned | |
7033 | by a call to GetVarient(fieldsymbol). The created field | |
7034 | is returned. | |
7035 | *) | |
7036 | ||
7037 | PROCEDURE PutFieldRecord (Sym: CARDINAL; | |
7038 | FieldName: Name; FieldType: CARDINAL; | |
7039 | VarSym: CARDINAL) : CARDINAL ; | |
7040 | VAR | |
7041 | oSym, | |
7042 | pSym : PtrToSymbol ; | |
7043 | esym, | |
7044 | ParSym, | |
7045 | SonSym: CARDINAL ; | |
7046 | BEGIN | |
7047 | NewSym(SonSym) ; (* Cannot be used before declared since use occurs *) | |
7048 | (* in pass 3 and it will be declared in pass 2. *) | |
7049 | (* Fill in the SonSym and connect it to its brothers (if any) and *) | |
7050 | (* ensure that it is connected its parent. *) | |
7051 | pSym := GetPsym(Sym) ; | |
7052 | WITH pSym^ DO | |
7053 | CASE SymbolType OF | |
7054 | ||
7055 | RecordSym : WITH Record DO | |
7056 | PutItemIntoList(ListOfSons, SonSym) ; | |
7057 | Assert(IsItemInList(Record.ListOfSons, SonSym)) ; | |
7058 | (* | |
7059 | n := NoOfItemsInList(ListOfSons) ; | |
7060 | printf3('record %d no of fields in ListOfSons = %d, field %d\n', Sym, n, SonSym) ; | |
7061 | *) | |
7062 | (* Ensure that the Field is in the Parents Local Symbols *) | |
7063 | IF FieldName#NulName | |
7064 | THEN | |
7065 | IF GetSymKey(LocalSymbols, FieldName)=NulKey | |
7066 | THEN | |
7067 | PutSymKey(LocalSymbols, FieldName, SonSym) | |
7068 | ELSE | |
7069 | esym := GetSymKey(LocalSymbols, FieldName) ; | |
7070 | MetaErrors1('field record {%1Dad} has already been declared', | |
7071 | 'field record duplicate', esym) | |
7072 | END | |
7073 | END | |
7074 | END ; | |
7075 | CheckRecordConsistency(Sym) | | |
7076 | VarientFieldSym : WITH VarientField DO | |
7077 | PutItemIntoList(ListOfSons, SonSym) ; | |
7078 | ParSym := GetRecord(Parent) | |
7079 | END ; | |
7080 | oSym := GetPsym(ParSym) ; | |
7081 | Assert(oSym^.SymbolType=RecordSym) ; | |
7082 | IF FieldName#NulName | |
7083 | THEN | |
7084 | oSym := GetPsym(ParSym) ; | |
7085 | PutSymKey(oSym^.Record.LocalSymbols, FieldName, SonSym) | |
7086 | END | |
7087 | ||
7088 | ELSE | |
7089 | InternalError ('expecting Record symbol') | |
7090 | END | |
7091 | END ; | |
7092 | (* Fill in SonSym *) | |
7093 | oSym := GetPsym(SonSym) ; | |
7094 | WITH oSym^ DO | |
7095 | SymbolType := RecordFieldSym ; | |
7096 | WITH RecordField DO | |
7097 | Type := FieldType ; | |
7098 | name := FieldName ; | |
7099 | Tag := FALSE ; | |
7100 | Parent := Sym ; | |
7101 | Varient := VarSym ; | |
7102 | Align := NulSym ; | |
7103 | Used := TRUE ; | |
7104 | DeclPacked := FALSE ; (* not known as packed (yet). *) | |
7105 | DeclResolved := FALSE ; | |
7106 | Scope := GetScope(Sym) ; | |
7107 | Size := InitValue() ; | |
7108 | Offset := InitValue() ; | |
7109 | InitWhereDeclared(At) | |
7110 | END | |
7111 | END ; | |
7112 | RETURN( SonSym ) | |
7113 | END PutFieldRecord ; | |
7114 | ||
7115 | ||
7116 | (* | |
7117 | MakeFieldVarient - returns a FieldVarient symbol which has been | |
7118 | assigned to the Varient symbol, Sym. | |
7119 | *) | |
7120 | ||
7121 | PROCEDURE MakeFieldVarient (n: Name; Sym: CARDINAL) : CARDINAL ; | |
7122 | VAR | |
7123 | pSym : PtrToSymbol ; | |
7124 | SonSym: CARDINAL ; | |
7125 | BEGIN | |
7126 | NewSym(SonSym) ; | |
7127 | (* | |
7128 | IF NoOfItemsInList(FreeFVarientList)=0 | |
7129 | THEN | |
7130 | NewSym(SonSym) | |
7131 | ELSE | |
7132 | SonSym := GetItemFromList(FreeFVarientList, 1) ; | |
7133 | RemoveItemFromList(FreeFVarientList, SonSym) | |
7134 | END ; | |
7135 | *) | |
7136 | (* Fill in Sym *) | |
7137 | pSym := GetPsym(SonSym) ; | |
7138 | WITH pSym^ DO | |
7139 | SymbolType := VarientFieldSym ; | |
7140 | WITH VarientField DO | |
7141 | name := n ; | |
7142 | InitList(ListOfSons) ; | |
7143 | Parent := GetRecord(Sym) ; | |
7144 | Varient := NulSym ; | |
7145 | Size := InitValue() ; | |
7146 | Offset := InitValue() ; | |
7147 | DeclPacked := FALSE ; | |
7148 | DeclResolved := FALSE ; | |
7149 | Scope := GetCurrentScope() ; | |
7150 | InitWhereDeclared(At) | |
7151 | END | |
7152 | END ; | |
7153 | RETURN( SonSym ) | |
7154 | END MakeFieldVarient ; | |
7155 | ||
7156 | ||
7157 | (* | |
7158 | PutFieldVarient - places the field varient, Field, as a brother to, the | |
7159 | varient symbol, sym, and also tells Field that its varient | |
7160 | parent is Sym. | |
7161 | *) | |
7162 | ||
7163 | PROCEDURE PutFieldVarient (Field, Sym: CARDINAL) ; | |
7164 | VAR | |
7165 | pSym: PtrToSymbol ; | |
7166 | BEGIN | |
7167 | Assert(IsVarient(Sym)) ; | |
7168 | Assert(IsFieldVarient(Field)) ; | |
7169 | pSym := GetPsym(Sym) ; | |
7170 | WITH pSym^ DO | |
7171 | CASE SymbolType OF | |
7172 | ||
7173 | VarientSym : IncludeItemIntoList(Varient.ListOfSons, Field) | |
7174 | ||
7175 | ELSE | |
7176 | InternalError ('expecting Varient symbol') | |
7177 | END | |
7178 | END ; | |
7179 | pSym := GetPsym(Field) ; | |
7180 | WITH pSym^ DO | |
7181 | CASE SymbolType OF | |
7182 | ||
7183 | VarientFieldSym : VarientField.Varient := Sym | |
7184 | ||
7185 | ELSE | |
7186 | InternalError ('expecting VarientField symbol') | |
7187 | END | |
7188 | END ; | |
7189 | (* PutItemIntoList(UsedFVarientList, Field) *) | |
7190 | END PutFieldVarient ; | |
7191 | ||
7192 | ||
7193 | (* | |
7194 | GetVarient - returns the varient symbol associated with the | |
7195 | record or varient field symbol, Field. | |
7196 | *) | |
7197 | ||
7198 | PROCEDURE GetVarient (Field: CARDINAL) : CARDINAL ; | |
7199 | VAR | |
7200 | pSym: PtrToSymbol ; | |
7201 | BEGIN | |
7202 | pSym := GetPsym(Field) ; | |
7203 | WITH pSym^ DO | |
7204 | CASE SymbolType OF | |
7205 | ||
7206 | VarientFieldSym : RETURN( VarientField.Varient ) | | |
7207 | RecordFieldSym : RETURN( RecordField.Varient ) | | |
7208 | VarientSym : RETURN( Varient.Varient ) | |
7209 | ||
7210 | ELSE | |
7211 | RETURN( NulSym ) | |
7212 | END | |
7213 | END | |
7214 | END GetVarient ; | |
7215 | ||
7216 | ||
7217 | (* | |
7218 | EnsureOrder - providing that both symbols, a, and, b, exist in | |
7219 | list, l. Ensure that, b, is placed after a. | |
7220 | *) | |
7221 | ||
7222 | PROCEDURE EnsureOrder (l: List; a, b: CARDINAL) ; | |
7223 | VAR | |
7224 | n: CARDINAL ; | |
7225 | BEGIN | |
7226 | n := NoOfItemsInList(l) ; | |
7227 | IF IsItemInList(l, a) AND IsItemInList(l, b) | |
7228 | THEN | |
7229 | RemoveItemFromList(l, b) ; | |
7230 | IncludeItemIntoList(l, b) | |
7231 | END ; | |
7232 | Assert(n=NoOfItemsInList(l)) | |
7233 | END EnsureOrder ; | |
7234 | ||
7235 | ||
7236 | VAR | |
7237 | recordConsist: CARDINAL ; (* is used by CheckRecordConsistency and friends. *) | |
7238 | ||
7239 | ||
7240 | (* | |
7241 | DumpSons - | |
7242 | *) | |
7243 | ||
7244 | PROCEDURE DumpSons (sym: CARDINAL) ; | |
7245 | VAR | |
7246 | pSym : PtrToSymbol ; | |
7247 | f, n, i: CARDINAL ; | |
7248 | BEGIN | |
7249 | pSym := GetPsym(sym) ; | |
7250 | WITH pSym^ DO | |
7251 | CASE SymbolType OF | |
7252 | ||
7253 | RecordSym: n := NoOfItemsInList(Record.ListOfSons) ; | |
7254 | i := 1 ; | |
7255 | WHILE i<=n DO | |
7256 | f := GetItemFromList(Record.ListOfSons, i) ; | |
7257 | printf3('record %d field %d is %d\n', sym, i, f) ; | |
7258 | INC(i) | |
7259 | END | |
7260 | ||
7261 | ELSE | |
7262 | InternalError ('expecting record symbol') | |
7263 | END | |
7264 | END | |
7265 | END DumpSons ; | |
7266 | ||
7267 | ||
7268 | ||
7269 | (* | |
7270 | CheckListOfSons - checks to see that sym, is present in, recordConsist, ListOfSons. | |
7271 | *) | |
7272 | ||
7273 | PROCEDURE CheckListOfSons (sym: WORD) ; | |
7274 | VAR | |
7275 | pSym: PtrToSymbol ; | |
7276 | BEGIN | |
7277 | pSym := GetPsym(recordConsist) ; | |
7278 | WITH pSym^ DO | |
7279 | CASE SymbolType OF | |
7280 | ||
7281 | RecordSym: IF NOT IsItemInList(Record.ListOfSons, sym) | |
7282 | THEN | |
7283 | DumpSons(recordConsist) ; | |
7284 | MetaError1('internal error: expecting {%1ad} to exist in record ListOfSons', sym) | |
7285 | END | |
7286 | ||
7287 | ELSE | |
7288 | InternalError ('expecting record symbol') | |
7289 | END | |
7290 | END | |
7291 | END CheckListOfSons ; | |
7292 | ||
7293 | ||
7294 | (* | |
7295 | CheckRecordConsistency - | |
7296 | *) | |
7297 | ||
7298 | PROCEDURE CheckRecordConsistency (sym: CARDINAL) ; | |
7299 | VAR | |
7300 | pSym: PtrToSymbol ; | |
7301 | BEGIN | |
7302 | RETURN ; | |
7303 | pSym := GetPsym(sym) ; | |
7304 | WITH pSym^ DO | |
7305 | CASE SymbolType OF | |
7306 | ||
7307 | RecordSym: recordConsist := sym ; | |
7308 | WITH Record DO | |
7309 | ForeachNodeDo(LocalSymbols, CheckListOfSons) | |
7310 | END | | |
7311 | ||
7312 | ELSE | |
7313 | InternalError ('record symbol expected') | |
7314 | END | |
7315 | END | |
7316 | END CheckRecordConsistency ; | |
7317 | ||
7318 | ||
7319 | (* | |
7320 | IsEmptyFieldVarient - returns TRUE if the field variant has | |
7321 | no fields. This will occur then the | |
7322 | compiler constructs 'else end' variants. | |
7323 | *) | |
7324 | ||
7325 | PROCEDURE IsEmptyFieldVarient (sym: CARDINAL) : BOOLEAN ; | |
7326 | VAR | |
7327 | pSym: PtrToSymbol ; | |
7328 | BEGIN | |
7329 | pSym := GetPsym(sym) ; | |
7330 | WITH pSym^ DO | |
7331 | CASE SymbolType OF | |
7332 | ||
7333 | VarientFieldSym: RETURN( NoOfItemsInList(VarientField.ListOfSons)=0 ) | |
7334 | ||
7335 | ELSE | |
7336 | InternalError ('varient field symbol expected') | |
7337 | END | |
7338 | END | |
7339 | END IsEmptyFieldVarient ; | |
7340 | ||
7341 | ||
7342 | (* | |
7343 | IsRecordFieldAVarientTag - returns TRUE if record field, sym, is | |
7344 | a varient tag. | |
7345 | *) | |
7346 | ||
7347 | PROCEDURE IsRecordFieldAVarientTag (sym: CARDINAL) : BOOLEAN ; | |
7348 | VAR | |
7349 | pSym: PtrToSymbol ; | |
7350 | BEGIN | |
7351 | IF IsRecordField(sym) | |
7352 | THEN | |
7353 | pSym := GetPsym(sym) ; | |
7354 | RETURN( pSym^.RecordField.Tag ) | |
7355 | ELSE | |
7356 | InternalError ('record field symbol expected') | |
7357 | END | |
7358 | END IsRecordFieldAVarientTag ; | |
7359 | ||
7360 | ||
7361 | (* | |
7362 | PutVarientTag - places, Tag, into varient, Sym. | |
7363 | *) | |
7364 | ||
7365 | PROCEDURE PutVarientTag (Sym, Tag: CARDINAL) ; | |
7366 | VAR | |
7367 | pSym : PtrToSymbol ; | |
7368 | parent: CARDINAL ; | |
7369 | BEGIN | |
7370 | pSym := GetPsym(Sym) ; | |
7371 | WITH pSym^ DO | |
7372 | CASE SymbolType OF | |
7373 | ||
7374 | VarientSym: Varient.tag := Tag | |
7375 | ||
7376 | ELSE | |
7377 | InternalError ('varient symbol expected') | |
7378 | END | |
7379 | END ; | |
7380 | (* now ensure that if Tag is a RecordField then it must be | |
7381 | placed before the varient symbol in its parent ListOfSons. | |
7382 | This allows M2GCCDeclare to declare record fields in order | |
7383 | and preserve the order of fields. Otherwise it will add the | |
7384 | tag field after the C union. *) | |
7385 | IF IsRecordField(Tag) | |
7386 | THEN | |
7387 | pSym := GetPsym(Tag) ; | |
7388 | pSym^.RecordField.Tag := TRUE ; | |
7389 | parent := GetParent(Sym) ; | |
7390 | pSym := GetPsym(parent) ; | |
7391 | WITH pSym^ DO | |
7392 | CASE SymbolType OF | |
7393 | ||
7394 | ErrorSym: | | |
7395 | VarientSym : EnsureOrder(Varient.ListOfSons, Tag, Sym) | | |
7396 | VarientFieldSym: EnsureOrder(VarientField.ListOfSons, Tag, Sym) | | |
7397 | RecordSym : EnsureOrder(Record.ListOfSons, Tag, Sym) ; | |
7398 | CheckRecordConsistency(parent) | |
7399 | ||
7400 | ELSE | |
7401 | InternalError ('not expecting this symbol type') | |
7402 | END | |
7403 | END | |
7404 | END | |
7405 | END PutVarientTag ; | |
7406 | ||
7407 | ||
7408 | (* | |
7409 | GetVarientTag - returns the varient tag from, Sym. | |
7410 | *) | |
7411 | ||
7412 | PROCEDURE GetVarientTag (Sym: CARDINAL) : CARDINAL ; | |
7413 | VAR | |
7414 | pSym: PtrToSymbol ; | |
7415 | BEGIN | |
7416 | pSym := GetPsym(Sym) ; | |
7417 | WITH pSym^ DO | |
7418 | CASE SymbolType OF | |
7419 | ||
7420 | VarientSym: RETURN( Varient.tag ) | |
7421 | ||
7422 | ELSE | |
7423 | InternalError ('varient symbol expected') | |
7424 | END | |
7425 | END | |
7426 | END GetVarientTag ; | |
7427 | ||
7428 | ||
7429 | (* | |
7430 | IsFieldVarient - returns true if the symbol, Sym, is a | |
7431 | varient field. | |
7432 | *) | |
7433 | ||
7434 | PROCEDURE IsFieldVarient (Sym: CARDINAL) : BOOLEAN ; | |
7435 | VAR | |
7436 | pSym: PtrToSymbol ; | |
7437 | BEGIN | |
7438 | pSym := GetPsym(Sym) ; | |
7439 | RETURN( pSym^.SymbolType=VarientFieldSym ) | |
7440 | END IsFieldVarient ; | |
7441 | ||
7442 | ||
7443 | (* | |
7444 | IsFieldEnumeration - returns true if the symbol, Sym, is an | |
7445 | enumeration field. | |
7446 | *) | |
7447 | ||
7448 | PROCEDURE IsFieldEnumeration (Sym: CARDINAL) : BOOLEAN ; | |
7449 | VAR | |
7450 | pSym: PtrToSymbol ; | |
7451 | BEGIN | |
7452 | pSym := GetPsym(Sym) ; | |
7453 | RETURN( pSym^.SymbolType=EnumerationFieldSym ) | |
7454 | END IsFieldEnumeration ; | |
7455 | ||
7456 | ||
7457 | (* | |
7458 | IsVarient - returns true if the symbol, Sym, is a | |
7459 | varient symbol. | |
7460 | *) | |
7461 | ||
7462 | PROCEDURE IsVarient (Sym: CARDINAL) : BOOLEAN ; | |
7463 | VAR | |
7464 | pSym: PtrToSymbol ; | |
7465 | BEGIN | |
7466 | pSym := GetPsym(Sym) ; | |
7467 | RETURN( pSym^.SymbolType=VarientSym ) | |
7468 | END IsVarient ; | |
7469 | ||
7470 | ||
7471 | (* | |
7472 | PutUnused - sets, sym, as unused. This is a gm2 pragma. | |
7473 | *) | |
7474 | ||
7475 | PROCEDURE PutUnused (sym: CARDINAL) ; | |
7476 | VAR | |
7477 | pSym: PtrToSymbol ; | |
7478 | BEGIN | |
7479 | pSym := GetPsym(sym) ; | |
7480 | WITH pSym^ DO | |
7481 | CASE SymbolType OF | |
7482 | ||
7483 | RecordFieldSym: RecordField.Used := FALSE | |
7484 | ||
7485 | ELSE | |
7486 | MetaError1("cannot use pragma 'unused' on symbol {%1ad}", sym) | |
7487 | END | |
7488 | END | |
7489 | END PutUnused ; | |
7490 | ||
7491 | ||
7492 | (* | |
7493 | IsUnused - returns TRUE if the symbol was declared as unused with a | |
7494 | gm2 pragma. | |
7495 | *) | |
7496 | ||
7497 | PROCEDURE IsUnused (sym: CARDINAL) : BOOLEAN ; | |
7498 | VAR | |
7499 | pSym: PtrToSymbol ; | |
7500 | BEGIN | |
7501 | pSym := GetPsym(sym) ; | |
7502 | WITH pSym^ DO | |
7503 | CASE SymbolType OF | |
7504 | ||
7505 | RecordFieldSym: RETURN( NOT RecordField.Used ) | |
7506 | ||
7507 | ELSE | |
7508 | InternalError ('expecting a record field symbol') | |
7509 | END | |
7510 | END | |
7511 | END IsUnused ; | |
7512 | ||
7513 | ||
7514 | (* | |
7515 | PutFieldEnumeration - places a field into the enumeration type | |
7516 | Sym. The field has a name FieldName and a | |
7517 | value FieldVal. | |
7518 | *) | |
7519 | ||
7520 | PROCEDURE PutFieldEnumeration (tok: CARDINAL; Sym: CARDINAL; FieldName: Name) ; | |
7521 | VAR | |
7522 | oSym, | |
7523 | pSym : PtrToSymbol ; | |
7524 | s : String ; | |
7525 | Field: CARDINAL ; | |
7526 | BEGIN | |
7527 | Field := CheckForHiddenType(FieldName) ; | |
7528 | IF Field=NulSym | |
7529 | THEN | |
7530 | Field := DeclareSym (tok, FieldName) | |
7531 | END ; | |
7532 | IF NOT IsError(Field) | |
7533 | THEN | |
7534 | pSym := GetPsym(Field) ; | |
7535 | WITH pSym^ DO | |
7536 | SymbolType := EnumerationFieldSym ; | |
7537 | WITH EnumerationField DO | |
7538 | name := FieldName ; (* Index into name array, name *) | |
7539 | (* of type. *) | |
7540 | oSym := GetPsym(Sym) ; | |
7541 | PushCard(oSym^.Enumeration.NoOfElements) ; | |
7542 | Value := InitValue() ; | |
7543 | PopInto(Value) ; | |
7544 | Type := Sym ; | |
7545 | Scope := GetCurrentScope() ; | |
7546 | InitWhereDeclaredTok (tok, At) (* Declared here *) | |
7547 | END | |
7548 | END ; | |
7549 | pSym := GetPsym(Sym) ; | |
7550 | WITH pSym^ DO | |
7551 | CASE SymbolType OF | |
7552 | ||
7553 | EnumerationSym: WITH Enumeration DO | |
7554 | INC(NoOfElements) ; | |
7555 | IF GetSymKey(LocalSymbols, FieldName)#NulSym | |
7556 | THEN | |
7557 | s := Mark(InitStringCharStar(KeyToCharStar(FieldName))) ; | |
7558 | AlreadyDeclaredError(Sprintf1(Mark(InitString('enumeration field (%s) is already declared elsewhere, use a different name or remove the declaration')), s), | |
7559 | FieldName, | |
7560 | GetDeclaredMod(GetSymKey(LocalSymbols, FieldName))) | |
7561 | ELSE | |
89b58667 GM |
7562 | PutSymKey(LocalSymbols, FieldName, Field) ; |
7563 | IncludeItemIntoList (ListOfFields, Field) | |
1eee94d3 GM |
7564 | END |
7565 | END | |
7566 | ||
7567 | ELSE | |
7568 | InternalError ('expecting Sym=Enumeration') | |
7569 | END | |
7570 | END | |
7571 | END | |
7572 | END PutFieldEnumeration ; | |
7573 | ||
7574 | ||
7575 | (* | |
7576 | PutType - gives a type symbol Sym type TypeSymbol. | |
7577 | *) | |
7578 | ||
7579 | PROCEDURE PutType (Sym: CARDINAL; TypeSymbol: CARDINAL) ; | |
7580 | VAR | |
7581 | pSym: PtrToSymbol ; | |
7582 | BEGIN | |
7583 | IF TypeSymbol=Sym | |
7584 | THEN | |
7585 | InternalError ('not expecting a type to be declared as itself') | |
7586 | END ; | |
7587 | pSym := GetPsym(Sym) ; | |
7588 | WITH pSym^ DO | |
7589 | CASE SymbolType OF | |
7590 | ||
7591 | ErrorSym: | | |
7592 | TypeSym : Type.Type := TypeSymbol | |
7593 | ||
7594 | ELSE | |
7595 | InternalError ('expecting a Type symbol') | |
7596 | END | |
7597 | END | |
7598 | END PutType ; | |
7599 | ||
7600 | ||
7601 | (* | |
7602 | IsDefImp - returns true is the Sym is a DefImp symbol. | |
7603 | Definition/Implementation module symbol. | |
7604 | *) | |
7605 | ||
7606 | PROCEDURE IsDefImp (Sym: CARDINAL) : BOOLEAN ; | |
7607 | VAR | |
7608 | pSym: PtrToSymbol ; | |
7609 | BEGIN | |
7610 | pSym := GetPsym(Sym) ; | |
7611 | RETURN( pSym^.SymbolType=DefImpSym ) | |
7612 | END IsDefImp ; | |
7613 | ||
7614 | ||
7615 | (* | |
7616 | IsModule - returns true is the Sym is a Module symbol. | |
7617 | Program module symbol. | |
7618 | *) | |
7619 | ||
7620 | PROCEDURE IsModule (Sym: CARDINAL) : BOOLEAN ; | |
7621 | VAR | |
7622 | pSym: PtrToSymbol ; | |
7623 | BEGIN | |
7624 | pSym := GetPsym(Sym) ; | |
7625 | RETURN( pSym^.SymbolType=ModuleSym ) | |
7626 | END IsModule ; | |
7627 | ||
7628 | ||
7629 | (* | |
7630 | IsInnerModule - returns true if the symbol, Sym, is an inner module. | |
7631 | *) | |
7632 | ||
7633 | PROCEDURE IsInnerModule (Sym: CARDINAL) : BOOLEAN ; | |
7634 | BEGIN | |
7635 | IF IsModule(Sym) | |
7636 | THEN | |
7637 | RETURN( GetScope(Sym)#NulSym ) | |
7638 | ELSE | |
7639 | RETURN( FALSE ) | |
7640 | END | |
7641 | END IsInnerModule ; | |
7642 | ||
7643 | ||
7644 | (* | |
7645 | GetSymName - returns the symbol name. | |
7646 | *) | |
7647 | ||
7648 | PROCEDURE GetSymName (Sym: CARDINAL) : Name ; | |
7649 | VAR | |
7650 | pSym: PtrToSymbol ; | |
7651 | n : Name ; | |
7652 | BEGIN | |
7653 | IF Sym=NulSym | |
7654 | THEN | |
7655 | n := NulKey | |
7656 | ELSE | |
7657 | pSym := GetPsym(Sym) ; | |
7658 | WITH pSym^ DO | |
7659 | CASE SymbolType OF | |
7660 | ||
7661 | ErrorSym : n := Error.name | | |
7662 | ObjectSym : n := Object.name | | |
7663 | DefImpSym : n := DefImp.name | | |
7664 | ModuleSym : n := Module.name | | |
7665 | TypeSym : n := Type.name | | |
7666 | VarSym : n := Var.name | | |
7667 | ConstLitSym : n := ConstLit.name | | |
7668 | ConstVarSym : n := ConstVar.name | | |
7669 | ConstStringSym : n := ConstString.name | | |
7670 | EnumerationSym : n := Enumeration.name | | |
7671 | EnumerationFieldSym : n := EnumerationField.name | | |
7672 | UndefinedSym : n := Undefined.name | | |
7673 | ProcedureSym : n := Procedure.name | | |
7674 | ProcTypeSym : n := ProcType.name | | |
7675 | RecordFieldSym : n := RecordField.name | | |
7676 | RecordSym : n := Record.name | | |
7677 | VarientSym : n := NulName | | |
7678 | VarientFieldSym : n := VarientField.name | | |
7679 | VarParamSym : n := VarParam.name | | |
7680 | ParamSym : n := Param.name | | |
7681 | PointerSym : n := Pointer.name | | |
7682 | ArraySym : n := Array.name | | |
7683 | UnboundedSym : n := NulName | | |
7684 | SubrangeSym : n := Subrange.name | | |
7685 | SetSym : n := Set.name | | |
7686 | SubscriptSym : n := NulName | | |
7687 | DummySym : n := NulName | | |
7688 | PartialUnboundedSym : n := GetSymName(PartialUnbounded.Type) | | |
7689 | TupleSym : n := NulName | | |
7690 | GnuAsmSym : n := NulName | | |
ef6696af GM |
7691 | InterfaceSym : n := NulName | |
7692 | ImportSym : n := NulName | | |
7693 | ImportStatementSym : n := NulName | |
1eee94d3 GM |
7694 | |
7695 | ELSE | |
7696 | InternalError ('unexpected symbol type') | |
7697 | END | |
7698 | END | |
7699 | END ; | |
7700 | RETURN( n ) | |
7701 | END GetSymName ; | |
7702 | ||
7703 | ||
7704 | (* | |
7705 | PutConstVarTemporary - indicates that constant, sym, is a temporary. | |
7706 | *) | |
7707 | ||
7708 | PROCEDURE PutConstVarTemporary (sym: CARDINAL) ; | |
7709 | VAR | |
7710 | pSym: PtrToSymbol ; | |
7711 | BEGIN | |
7712 | pSym := GetPsym(sym) ; | |
7713 | WITH pSym^ DO | |
7714 | CASE SymbolType OF | |
7715 | ||
7716 | ConstVarSym: ConstVar.IsTemp := TRUE | |
7717 | ||
7718 | ELSE | |
7719 | InternalError ('expecting a Var symbol') | |
7720 | END | |
7721 | END | |
7722 | END PutConstVarTemporary ; | |
7723 | ||
7724 | ||
7725 | (* | |
7726 | buildTemporary - builds the temporary filling in componentRef, record and sets mode. | |
7727 | *) | |
7728 | ||
7729 | PROCEDURE buildTemporary (tok: CARDINAL; | |
7730 | Mode: ModeOfAddr; componentRef: BOOLEAN; record: CARDINAL) : CARDINAL ; | |
7731 | VAR | |
7732 | pSym: PtrToSymbol ; | |
7733 | s : String ; | |
7734 | Sym : CARDINAL ; | |
7735 | BEGIN | |
7736 | INC(TemporaryNo) ; | |
7737 | (* Make the name *) | |
7738 | s := Sprintf1(Mark(InitString('_T%d')), TemporaryNo) ; | |
7739 | IF Mode=ImmediateValue | |
7740 | THEN | |
7741 | Sym := MakeConstVar(tok, makekey(string(s))) ; | |
7742 | PutConstVarTemporary(Sym) | |
7743 | ELSE | |
7744 | Sym := MakeVar(tok, makekey(string(s))) ; | |
7745 | pSym := GetPsym(Sym) ; | |
7746 | WITH pSym^ DO | |
7747 | CASE SymbolType OF | |
7748 | ||
7749 | VarSym : Var.AddrMode := Mode ; | |
7750 | Var.IsComponentRef := componentRef ; | |
7751 | Var.IsTemp := TRUE ; (* Variable is a temporary var *) | |
7752 | IF componentRef | |
7753 | THEN | |
7754 | Var.list := Indexing.InitIndex(1) ; | |
7755 | PutIntoIndex(Var.list, 1, record) | |
7756 | END ; | |
7757 | InitWhereDeclaredTok(tok, Var.At) ; (* Declared here *) | |
7758 | InitWhereFirstUsedTok(tok, Var.At) ; (* Where symbol first used. *) | |
7759 | ||
7760 | ELSE | |
7761 | InternalError ('expecting a Var symbol') | |
7762 | END | |
7763 | END | |
7764 | END ; | |
7765 | s := KillString(s) ; | |
7766 | RETURN Sym | |
7767 | END buildTemporary ; | |
7768 | ||
7769 | ||
7770 | (* | |
7771 | MakeComponentRef - use, sym, to reference, field, sym is returned. | |
7772 | *) | |
7773 | ||
7774 | PROCEDURE MakeComponentRef (sym: CARDINAL; field: CARDINAL) : CARDINAL ; | |
7775 | VAR | |
7776 | pSym: PtrToSymbol ; | |
7777 | high: CARDINAL ; | |
7778 | BEGIN | |
7779 | pSym := GetPsym (sym) ; | |
7780 | WITH pSym^ DO | |
7781 | CASE SymbolType OF | |
7782 | ||
7783 | VarSym: IF NOT Var.IsTemp | |
7784 | THEN | |
7785 | InternalError ('variable must be a temporary') | |
7786 | ELSIF Var.IsComponentRef | |
7787 | THEN | |
7788 | high := Indexing.HighIndice (Var.list) ; | |
7789 | PutIntoIndex (Var.list, high+1, field) | |
7790 | ELSE | |
7791 | InternalError ('temporary is not a component reference') | |
7792 | END | |
7793 | ||
7794 | ELSE | |
7795 | InternalError ('expecting a variable symbol') | |
7796 | END | |
7797 | END ; | |
7798 | RETURN( sym ) | |
7799 | END MakeComponentRef ; | |
7800 | ||
7801 | ||
7802 | (* | |
7803 | MakeComponentRecord - make a temporary which will be used to reference and field | |
7804 | (or sub field) of record. | |
7805 | *) | |
7806 | ||
7807 | PROCEDURE MakeComponentRecord (tok: CARDINAL; Mode: ModeOfAddr; record: CARDINAL) : CARDINAL ; | |
7808 | BEGIN | |
7809 | RETURN buildTemporary (tok, Mode, TRUE, record) | |
7810 | END MakeComponentRecord ; | |
7811 | ||
7812 | ||
7813 | (* | |
7814 | IsComponent - returns TRUE if symbol, sym, is a temporary and a component | |
7815 | reference. | |
7816 | *) | |
7817 | ||
7818 | PROCEDURE IsComponent (sym: CARDINAL) : BOOLEAN ; | |
7819 | VAR | |
7820 | pSym: PtrToSymbol ; | |
7821 | BEGIN | |
7822 | pSym := GetPsym(sym) ; | |
7823 | WITH pSym^ DO | |
7824 | CASE SymbolType OF | |
7825 | ||
7826 | VarSym: RETURN( Var.IsComponentRef ) | |
7827 | ||
7828 | ELSE | |
7829 | RETURN( FALSE ) | |
7830 | END | |
7831 | END | |
7832 | END IsComponent ; | |
7833 | ||
7834 | ||
7835 | (* | |
7836 | MakeTemporary - Makes a new temporary variable at the highest real scope. | |
7837 | The addressing mode of the temporary is set to NoValue. | |
7838 | *) | |
7839 | ||
7840 | PROCEDURE MakeTemporary (tok: CARDINAL; Mode: ModeOfAddr) : CARDINAL ; | |
7841 | BEGIN | |
7842 | RETURN buildTemporary (tok, Mode, FALSE, NulSym) | |
7843 | END MakeTemporary ; | |
7844 | ||
7845 | ||
7846 | (* | |
7847 | MakeTemporaryFromExpressions - makes a new temporary variable at the | |
7848 | highest real scope. The addressing | |
7849 | mode of the temporary is set and the | |
7850 | type is determined by expressions, | |
7851 | e1 and e2. | |
7852 | *) | |
7853 | ||
7854 | PROCEDURE MakeTemporaryFromExpressions (tok: CARDINAL; | |
7855 | e1, e2: CARDINAL; | |
7856 | mode: ModeOfAddr) : CARDINAL ; | |
7857 | VAR | |
7858 | pSym: PtrToSymbol ; | |
7859 | s : String ; | |
7860 | t, | |
7861 | Sym : CARDINAL ; | |
7862 | BEGIN | |
7863 | INC(TemporaryNo) ; | |
7864 | (* Make the name *) | |
7865 | s := Sprintf1(Mark(InitString('_T%d')), TemporaryNo) ; | |
7866 | IF mode=ImmediateValue | |
7867 | THEN | |
7868 | Sym := MakeConstVar(tok, makekey(string(s))) ; | |
7869 | IF IsConstructor(e1) | |
7870 | THEN | |
7871 | PutConstructor(Sym) ; | |
7872 | PutConstructorFrom(Sym, e1) | |
7873 | ELSIF IsConstructor(e2) | |
7874 | THEN | |
7875 | PutConstructor(Sym) ; | |
7876 | PutConstructorFrom(Sym, e2) | |
7877 | ELSE | |
7878 | PutVar(Sym, MixTypes(GetType(e1), GetType(e2), tok)) | |
7879 | END ; | |
7880 | PutConstVarTemporary(Sym) | |
7881 | ELSE | |
7882 | Sym := MakeVar(tok, makekey(string(s))) ; | |
7883 | pSym := GetPsym(Sym) ; | |
7884 | WITH pSym^ DO | |
7885 | CASE SymbolType OF | |
7886 | ||
7887 | VarSym : Var.AddrMode := mode ; | |
7888 | Var.IsComponentRef := FALSE ; | |
7889 | Var.IsTemp := TRUE ; (* Variable is a temporary var *) | |
7890 | InitWhereDeclaredTok(tok, Var.At) | |
7891 | (* Declared here *) | |
7892 | ||
7893 | ELSE | |
7894 | InternalError ('expecting a Var symbol') | |
7895 | END | |
7896 | END ; | |
7897 | t := MixTypes(GetType(e1), GetType(e2), tok) ; | |
7898 | IF t#NulSym | |
7899 | THEN | |
7900 | Assert(NOT IsConstructor(t)) ; | |
7901 | PutVar(Sym, t) | |
7902 | END | |
7903 | END ; | |
7904 | s := KillString(s) ; | |
7905 | RETURN( Sym ) | |
7906 | END MakeTemporaryFromExpressions ; | |
7907 | ||
7908 | ||
7909 | (* | |
7910 | MakeTemporaryFromExpression - makes a new temporary variable at the | |
7911 | highest real scope. The addressing | |
7912 | mode of the temporary is set and the | |
7913 | type is determined by expressions, e. | |
7914 | *) | |
7915 | ||
7916 | PROCEDURE MakeTemporaryFromExpression (tok: CARDINAL; | |
7917 | e: CARDINAL; | |
7918 | mode: ModeOfAddr) : CARDINAL ; | |
7919 | BEGIN | |
7920 | RETURN MakeTemporaryFromExpressions (tok, e, e, mode) | |
7921 | END MakeTemporaryFromExpression ; | |
7922 | ||
7923 | ||
7924 | (* | |
7925 | PutMode - Puts the addressing mode, SymMode, into symbol Sym. | |
7926 | The mode may only be altered if the mode | |
7927 | is None. | |
7928 | *) | |
7929 | ||
7930 | PROCEDURE PutMode (Sym: CARDINAL; SymMode: ModeOfAddr) ; | |
7931 | VAR | |
7932 | pSym: PtrToSymbol ; | |
7933 | BEGIN | |
7934 | pSym := GetPsym(Sym) ; | |
7935 | WITH pSym^ DO | |
7936 | CASE SymbolType OF | |
7937 | ||
7938 | ErrorSym: | | |
7939 | VarSym : Var.AddrMode := SymMode | |
7940 | ||
7941 | ELSE | |
7942 | InternalError ('Expecting VarSym') | |
7943 | END | |
7944 | END | |
7945 | END PutMode ; | |
7946 | ||
7947 | ||
7948 | (* | |
7949 | GetMode - Returns the addressing mode of a symbol. | |
7950 | *) | |
7951 | ||
7952 | PROCEDURE GetMode (Sym: CARDINAL) : ModeOfAddr ; | |
7953 | VAR | |
7954 | pSym: PtrToSymbol ; | |
7955 | BEGIN | |
7956 | pSym := GetPsym(Sym) ; | |
7957 | WITH pSym^ DO | |
7958 | CASE SymbolType OF | |
7959 | ||
7960 | ErrorSym : ErrorAbort0('') | | |
7961 | VarSym : RETURN( Var.AddrMode ) | | |
7962 | ConstLitSym : RETURN( ImmediateValue ) | | |
7963 | ConstVarSym : RETURN( ImmediateValue ) | | |
7964 | ConstStringSym : RETURN( ImmediateValue ) | | |
7965 | EnumerationFieldSym: RETURN( ImmediateValue ) | | |
7966 | ProcedureSym : RETURN( ImmediateValue ) | | |
7967 | RecordFieldSym : RETURN( ImmediateValue ) | | |
7968 | VarientFieldSym : RETURN( ImmediateValue ) | | |
7969 | TypeSym : RETURN( NoValue ) | | |
7970 | ArraySym : RETURN( NoValue ) | | |
7971 | SubrangeSym : RETURN( NoValue ) | | |
7972 | EnumerationSym : RETURN( NoValue ) | | |
7973 | RecordSym : RETURN( NoValue ) | | |
7974 | PointerSym : RETURN( NoValue ) | | |
7975 | SetSym : RETURN( NoValue ) | | |
7976 | ProcTypeSym : RETURN( NoValue ) | | |
7977 | UnboundedSym : RETURN( NoValue ) | | |
7978 | UndefinedSym : RETURN( NoValue ) | |
7979 | ||
7980 | ELSE | |
7981 | InternalError ('not expecting this type') | |
7982 | END | |
7983 | END | |
7984 | END GetMode ; | |
7985 | ||
7986 | ||
7987 | (* | |
7988 | RenameSym - renames a symbol, Sym, with SymName. | |
7989 | It also checks the unknown tree for a symbol | |
7990 | with this new name. Must only be renamed in | |
7991 | the same scope of being declared. | |
7992 | *) | |
7993 | ||
7994 | PROCEDURE RenameSym (Sym: CARDINAL; SymName: Name) ; | |
7995 | VAR | |
7996 | pSym: PtrToSymbol ; | |
7997 | BEGIN | |
7998 | IF GetSymName(Sym)=NulName | |
7999 | THEN | |
8000 | pSym := GetPsym(Sym) ; | |
8001 | WITH pSym^ DO | |
8002 | CASE SymbolType OF | |
8003 | ||
8004 | ErrorSym : ErrorAbort0('') | | |
8005 | TypeSym : Type.name := SymName | | |
8006 | VarSym : Var.name := SymName | | |
8007 | ConstLitSym : ConstLit.name := SymName | | |
8008 | ConstVarSym : ConstVar.name := SymName | | |
8009 | UndefinedSym : Undefined.name := SymName | | |
8010 | RecordSym : Record.name := SymName | | |
8011 | PointerSym : Pointer.name := SymName | |
8012 | ||
8013 | ELSE | |
8014 | InternalError ('not implemented yet') | |
8015 | END | |
8016 | END ; | |
8017 | AddSymToScope(Sym, SymName) | |
8018 | ELSE | |
8019 | InternalError ('old name of symbol must be nul') | |
8020 | END | |
8021 | END RenameSym ; | |
8022 | ||
8023 | ||
8024 | (* | |
8025 | IsUnknown - returns true is the symbol Sym is unknown. | |
8026 | *) | |
8027 | ||
8028 | PROCEDURE IsUnknown (Sym: WORD) : BOOLEAN ; | |
8029 | VAR | |
8030 | pSym: PtrToSymbol ; | |
8031 | BEGIN | |
8032 | CheckLegal (Sym) ; | |
8033 | pSym := GetPsym(Sym) ; | |
8034 | RETURN pSym^.SymbolType=UndefinedSym | |
8035 | END IsUnknown ; | |
8036 | ||
8037 | ||
8038 | (* | |
8039 | CheckLegal - determines whether the Sym is a legal symbol. | |
8040 | *) | |
8041 | ||
8042 | PROCEDURE CheckLegal (Sym: CARDINAL) ; | |
8043 | BEGIN | |
8044 | IF (Sym<1) OR (Sym>FinalSymbol()) | |
8045 | THEN | |
8046 | InternalError ('illegal symbol') | |
8047 | END | |
8048 | END CheckLegal ; | |
8049 | ||
8050 | ||
8051 | (* | |
8052 | CheckForHiddenType - scans the NeedToBeImplemented tree providing | |
8053 | that we are currently compiling an implementation | |
8054 | module. If a symbol is found with TypeName | |
8055 | then its Sym is returned. | |
8056 | Otherwise NulSym is returned. | |
8057 | CheckForHiddenType is called before any type is | |
8058 | created, therefore the compiler allows hidden | |
8059 | types to be implemented using any type. | |
8060 | *) | |
8061 | ||
8062 | PROCEDURE CheckForHiddenType (TypeName: Name) : CARDINAL ; | |
8063 | VAR | |
8064 | pSym: PtrToSymbol ; | |
8065 | Sym : CARDINAL ; | |
8066 | BEGIN | |
8067 | Sym := NulSym ; | |
8068 | IF CompilingImplementationModule() AND | |
8069 | IsDefImp(CurrentModule) AND | |
8070 | IsHiddenTypeDeclared(CurrentModule) AND | |
8071 | (TypeName#NulName) | |
8072 | THEN | |
b0762d4c | 8073 | (* Check to see whether we are declaring a HiddenType. *) |
1eee94d3 GM |
8074 | pSym := GetPsym(CurrentModule) ; |
8075 | WITH pSym^ DO | |
8076 | CASE SymbolType OF | |
8077 | ||
8078 | DefImpSym: Sym := GetSymKey(DefImp.NeedToBeImplemented, TypeName) | |
8079 | ||
8080 | ELSE | |
8081 | InternalError ('expecting a DefImp symbol') | |
8082 | END | |
8083 | END | |
8084 | END ; | |
8085 | RETURN( Sym ) | |
8086 | END CheckForHiddenType ; | |
8087 | ||
8088 | ||
8089 | (* | |
8090 | IsReallyPointer - returns TRUE is sym is a pointer, address or a | |
8091 | type declared as a pointer or address. | |
8092 | *) | |
8093 | ||
8094 | PROCEDURE IsReallyPointer (Sym: CARDINAL) : BOOLEAN ; | |
8095 | BEGIN | |
8096 | IF IsVar(Sym) | |
8097 | THEN | |
8098 | Sym := GetType(Sym) | |
8099 | END ; | |
8100 | Sym := SkipType(Sym) ; | |
8101 | RETURN( IsPointer(Sym) OR (Sym=Address) ) | |
8102 | END IsReallyPointer ; | |
8103 | ||
8104 | ||
8105 | (* | |
8106 | SkipHiddenType - if sym is a TYPE foo = bar | |
8107 | then call SkipType(bar) | |
8108 | else return sym | |
8109 | ||
8110 | it does skip over hidden type. | |
8111 | *) | |
8112 | ||
8113 | (* | |
8114 | PROCEDURE SkipHiddenType (Sym: CARDINAL) : CARDINAL ; | |
8115 | BEGIN | |
8116 | IF (Sym#NulSym) AND IsType(Sym) AND (GetType(Sym)#NulSym) | |
8117 | THEN | |
8118 | RETURN( SkipType(GetType(Sym)) ) | |
8119 | ELSE | |
8120 | RETURN( Sym ) | |
8121 | END | |
8122 | END SkipHiddenType ; | |
8123 | *) | |
8124 | ||
8125 | ||
8126 | (* | |
8127 | IsHiddenReallyPointer - returns TRUE is sym is a pointer, address or a | |
8128 | type declared as a pointer or address. | |
8129 | *) | |
8130 | ||
8131 | PROCEDURE IsHiddenReallyPointer (Sym: CARDINAL) : BOOLEAN ; | |
8132 | BEGIN | |
8133 | IF IsVar (Sym) | |
8134 | THEN | |
8135 | Sym := GetType (Sym) | |
8136 | END ; | |
8137 | WHILE (Sym # NulSym) AND IsType (Sym) DO | |
8138 | Sym := SkipType (GetType (Sym)) | |
8139 | END ; | |
8140 | RETURN (Sym # NulSym) AND (IsPointer (Sym) OR (Sym = Address)) | |
8141 | END IsHiddenReallyPointer ; | |
8142 | ||
8143 | ||
8144 | (* | |
8145 | CheckHiddenTypeAreAddress - checks to see that any hidden types | |
8146 | which we have declared are actually | |
8147 | of type ADDRESS or map onto a POINTER type. | |
8148 | *) | |
8149 | ||
8150 | PROCEDURE CheckHiddenTypeAreAddress ; | |
8151 | VAR | |
8152 | name: Name ; | |
8153 | e : Error ; | |
8154 | sym, | |
8155 | i, n: CARDINAL ; | |
8156 | BEGIN | |
8157 | i := 1 ; | |
8158 | n := NoOfItemsInList(AddressTypes) ; | |
8159 | WHILE i<=n DO | |
8160 | sym := GetItemFromList(AddressTypes, i) ; | |
8161 | IF NOT IsHiddenReallyPointer(sym) | |
8162 | THEN | |
8163 | name := GetSymName(sym) ; | |
8164 | e := NewError(GetDeclaredDef(sym)) ; | |
8165 | ErrorFormat1(e, 'opaque type (%a) should be equivalent to a POINTER or an ADDRESS', name) ; | |
8166 | e := NewError(GetDeclaredMod(sym)) ; | |
8167 | ErrorFormat0(e, 'if you really need a non POINTER type use the -fextended-opaque switch') | |
8168 | END ; | |
8169 | INC(i) | |
8170 | END | |
8171 | END CheckHiddenTypeAreAddress ; | |
8172 | ||
8173 | ||
8174 | (* | |
8175 | GetLastMainScopeId - returns the, id, containing the last main scope. | |
8176 | *) | |
8177 | ||
8178 | (* | |
8179 | PROCEDURE GetLastMainScopeId (id: CARDINAL) : CARDINAL ; | |
8180 | VAR | |
8181 | pCall: PtrToCallFrame ; | |
8182 | sym : CARDINAL ; | |
8183 | BEGIN | |
8184 | IF id>0 | |
8185 | THEN | |
8186 | pCall := GetPcall(id) ; | |
8187 | sym := pCall^.Main ; | |
8188 | WHILE id>1 DO | |
8189 | DEC(id) ; | |
8190 | pCall := GetPcall(id) ; | |
8191 | IF sym#pCall^.Main | |
8192 | THEN | |
8193 | RETURN( id ) | |
8194 | END | |
8195 | END | |
8196 | END ; | |
8197 | RETURN( 0 ) | |
8198 | END GetLastMainScopeId ; | |
8199 | *) | |
8200 | ||
8201 | ||
8202 | (* | |
8203 | GetDeclareSym - searches for a symbol with a name SymName in the | |
8204 | current and previous scopes. | |
8205 | If the symbol is found then it is returned | |
8206 | else an unknown symbol is returned. | |
8207 | This procedure assumes that SymName is being | |
8208 | declared at this point and therefore it does | |
8209 | not examine the base scope (for pervasive | |
8210 | identifiers). | |
8211 | *) | |
8212 | ||
8213 | PROCEDURE GetDeclareSym (tok: CARDINAL; SymName: Name) : CARDINAL ; | |
8214 | VAR | |
8215 | Sym: CARDINAL ; | |
8216 | BEGIN | |
8217 | Sym := GetScopeSym (SymName, FALSE) ; (* must not be allowed to fetch a symbol through a procedure scope *) | |
8218 | IF Sym=NulSym | |
8219 | THEN | |
8220 | Sym := GetSymFromUnknownTree (SymName) ; | |
8221 | IF Sym=NulSym | |
8222 | THEN | |
8223 | (* Make unknown *) | |
8224 | NewSym (Sym) ; | |
8225 | FillInUnknownFields (tok, Sym, SymName) ; | |
8226 | (* Add to unknown tree *) | |
8227 | AddSymToUnknownTree (ScopePtr, SymName, Sym) | |
8228 | (* | |
8229 | ; WriteKey(SymName) ; WriteString(' unknown demanded') ; WriteLn | |
8230 | *) | |
8231 | END | |
8232 | END ; | |
8233 | RETURN Sym | |
8234 | END GetDeclareSym ; | |
8235 | ||
8236 | ||
8237 | (* | |
8238 | RequestSym - searches for a symbol with a name SymName in the | |
8239 | current and previous scopes. | |
8240 | If the symbol is found then it is returned | |
8241 | else an unknown symbol is returned create at token | |
8242 | position, tok. | |
8243 | This procedure does search the base scope (for | |
8244 | pervasive identifiers). | |
8245 | *) | |
8246 | ||
8247 | PROCEDURE RequestSym (tok: CARDINAL; SymName: Name) : CARDINAL ; | |
8248 | VAR | |
8249 | Sym: CARDINAL ; | |
8250 | BEGIN | |
8251 | (* | |
8252 | WriteString('RequestSym for: ') ; WriteKey(SymName) ; WriteLn ; | |
8253 | *) | |
8254 | Sym := GetSym (SymName) ; | |
8255 | IF Sym=NulSym | |
8256 | THEN | |
8257 | Sym := GetSymFromUnknownTree (SymName) ; | |
8258 | IF Sym=NulSym | |
8259 | THEN | |
8260 | (* Make unknown *) | |
8261 | NewSym (Sym) ; | |
8262 | FillInUnknownFields (tok, Sym, SymName) ; | |
8263 | (* Add to unknown tree *) | |
8264 | AddSymToUnknownTree (ScopePtr, SymName, Sym) | |
8265 | (* | |
8266 | ; WriteKey(SymName) ; WriteString(' unknown demanded') ; WriteLn | |
8267 | *) | |
8268 | END | |
8269 | END ; | |
8270 | RETURN( Sym ) | |
8271 | END RequestSym ; | |
8272 | ||
8273 | ||
8274 | (* | |
8275 | PutImported - places a symbol, Sym, into the current main scope. | |
8276 | *) | |
8277 | ||
8278 | PROCEDURE PutImported (Sym: CARDINAL) ; | |
8279 | VAR | |
8280 | pSym : PtrToSymbol ; | |
8281 | ModSym: CARDINAL ; | |
8282 | n : Name ; | |
8283 | BEGIN | |
8284 | (* | |
8285 | We have currently imported Sym, now place it into the current module. | |
8286 | *) | |
8287 | ModSym := GetCurrentModuleScope() ; | |
8288 | Assert(IsDefImp(ModSym) OR IsModule(ModSym)) ; | |
8289 | pSym := GetPsym(ModSym) ; | |
8290 | WITH pSym^ DO | |
8291 | CASE SymbolType OF | |
8292 | ||
8293 | ModuleSym: IF GetSymKey(Module.ImportTree, GetSymName(Sym))=Sym | |
8294 | THEN | |
8295 | IF Pedantic | |
8296 | THEN | |
8297 | n := GetSymName(Sym) ; | |
8298 | WriteFormat1('symbol (%a) has already been imported', n) | |
8299 | END | |
8300 | ELSIF GetSymKey(Module.ImportTree, GetSymName(Sym))=NulKey | |
8301 | THEN | |
8302 | IF GetSymKey(Module.WhereImported, Sym)=NulKey | |
8303 | THEN | |
8304 | PutSymKey(Module.WhereImported, Sym, GetTokenNo()) | |
8305 | END ; | |
8306 | PutSymKey(Module.ImportTree, GetSymName(Sym), Sym) ; | |
8307 | AddSymToModuleScope(ModSym, Sym) | |
8308 | ELSE | |
8309 | n := GetSymName(Sym) ; | |
8310 | WriteFormat1('name clash when trying to import (%a)', n) | |
8311 | END | | |
8312 | DefImpSym: IF GetSymKey(DefImp.ImportTree, GetSymName(Sym))=Sym | |
8313 | THEN | |
8314 | IF Pedantic | |
8315 | THEN | |
8316 | n := GetSymName(Sym) ; | |
8317 | WriteFormat1('symbol (%a) has already been imported', n) | |
8318 | END | |
8319 | ELSIF GetSymKey(DefImp.ImportTree, GetSymName(Sym))=NulKey | |
8320 | THEN | |
8321 | IF GetSymKey(DefImp.WhereImported, Sym)=NulKey | |
8322 | THEN | |
8323 | PutSymKey(DefImp.WhereImported, Sym, GetTokenNo()) | |
8324 | END ; | |
8325 | PutSymKey(DefImp.ImportTree, GetSymName(Sym), Sym) ; | |
8326 | AddSymToModuleScope(ModSym, Sym) | |
8327 | ELSE | |
8328 | n := GetSymName(Sym) ; | |
8329 | WriteFormat1('name clash when trying to import (%a)', n) | |
8330 | END | |
8331 | ||
8332 | ELSE | |
8333 | InternalError ('expecting a Module or DefImp symbol') | |
8334 | END | |
8335 | END | |
8336 | END PutImported ; | |
8337 | ||
8338 | ||
8339 | (* | |
8340 | PutIncluded - places a symbol, Sym, into the included list of the | |
8341 | current module. | |
8342 | Symbols that are placed in this list are indirectly declared | |
8343 | by: | |
8344 | ||
8345 | IMPORT modulename ; | |
8346 | ||
8347 | modulename.identifier | |
8348 | *) | |
8349 | ||
8350 | PROCEDURE PutIncluded (Sym: CARDINAL) ; | |
8351 | VAR | |
8352 | pSym : PtrToSymbol ; | |
8353 | ModSym: CARDINAL ; | |
8354 | n1, n2: Name ; | |
8355 | BEGIN | |
8356 | (* | |
8357 | We have referenced Sym, via modulename.Sym | |
8358 | now place it into the current module include list. | |
8359 | *) | |
8360 | ModSym := GetCurrentModuleScope() ; | |
8361 | Assert(IsDefImp(ModSym) OR IsModule(ModSym)) ; | |
8362 | IF DebugUnknowns | |
8363 | THEN | |
8364 | n1 := GetSymName(Sym) ; | |
8365 | n2 := GetSymName(ModSym) ; | |
8366 | printf2('including %a into scope %a\n', n1, n2) | |
8367 | END ; | |
8368 | pSym := GetPsym(ModSym) ; | |
8369 | WITH pSym^ DO | |
8370 | CASE SymbolType OF | |
8371 | ||
8372 | ModuleSym: IncludeItemIntoList(Module.IncludeList, Sym) | | |
8373 | DefImpSym: IncludeItemIntoList(DefImp.IncludeList, Sym) | |
8374 | ||
8375 | ELSE | |
8376 | InternalError ('expecting a Module or DefImp symbol') | |
8377 | END | |
8378 | END | |
8379 | END PutIncluded ; | |
8380 | ||
8381 | ||
8382 | (* | |
8383 | PutExported - places a symbol, Sym into the next level out module. | |
8384 | Sym is also placed in the ExportTree of the current inner | |
8385 | module. | |
8386 | *) | |
8387 | ||
8388 | PROCEDURE PutExported (Sym: CARDINAL) ; | |
8389 | VAR | |
8390 | pSym: PtrToSymbol ; | |
8391 | BEGIN | |
8392 | (* | |
8393 | WriteString('PutExported') ; WriteLn ; | |
8394 | *) | |
8395 | AddSymToModuleScope(GetLastModuleOrProcedureScope(), Sym) ; | |
8396 | pSym := GetPsym(GetCurrentModuleScope()) ; | |
8397 | WITH pSym^ DO | |
8398 | CASE SymbolType OF | |
8399 | ||
8400 | ModuleSym: PutSymKey(Module.ExportTree, GetSymName(Sym), Sym) ; | |
8401 | IF IsUnknown(Sym) | |
8402 | THEN | |
8403 | PutExportUndeclared(GetCurrentModuleScope(), Sym) | |
8404 | END | |
8405 | (* | |
8406 | ; WriteKey(Module.name) ; WriteString(' exports ') ; | |
8407 | ; WriteKey(GetSymName(Sym)) ; WriteLn ; | |
8408 | *) | |
8409 | ||
8410 | ELSE | |
8411 | InternalError ('expecting a Module symbol') | |
8412 | END | |
8413 | END | |
8414 | END PutExported ; | |
8415 | ||
8416 | ||
8417 | (* | |
8418 | PutExportQualified - places a symbol with the name, SymName, | |
8419 | into the export tree of the | |
8420 | Definition module being compiled. | |
8421 | The symbol with name has been EXPORT QUALIFIED | |
8422 | by the definition module and therefore any reference | |
8423 | to this symbol in the code generation phase | |
8424 | will be in the form _Module_Name. | |
8425 | *) | |
8426 | ||
8427 | PROCEDURE PutExportQualified (tokenno: CARDINAL; SymName: Name) ; | |
8428 | VAR | |
8429 | pSym : PtrToSymbol ; | |
8430 | n : Name ; | |
8431 | Sym, | |
8432 | ModSym: CARDINAL ; | |
8433 | BEGIN | |
8434 | ModSym := GetCurrentModule () ; | |
8435 | Assert (IsDefImp (ModSym)) ; | |
8436 | Assert (CompilingDefinitionModule () OR | |
8437 | (GetSymName(ModSym) = MakeKey ('SYSTEM'))) ; | |
8438 | (* printf2('module %a exporting %a\n', GetSymName(ModSym), SymName) ; *) | |
8439 | (* | |
8440 | WriteString('1st MODULE ') ; WriteKey(GetSymName(ModSym)) ; | |
8441 | WriteString(' identifier ') ; WriteKey(SymName) ; WriteLn ; | |
8442 | *) | |
8443 | pSym := GetPsym (ModSym) ; | |
8444 | WITH pSym^ DO | |
8445 | CASE SymbolType OF | |
8446 | ||
8447 | DefImpSym: WITH DefImp DO | |
8448 | IF (GetSymKey (ExportQualifiedTree, SymName) # NulKey) AND | |
8449 | (GetSymKey (ExportRequest, SymName) = NulKey) | |
8450 | THEN | |
8451 | n := GetSymName(ModSym) ; | |
8452 | WriteFormat2('identifier (%a) has already been exported from MODULE %a', | |
8453 | SymName, n) | |
8454 | ELSIF GetSymKey(ExportRequest, SymName)#NulKey | |
8455 | THEN | |
8456 | Sym := GetSymKey(ExportRequest, SymName) ; | |
8457 | DelSymKey(ExportRequest, SymName) ; | |
8458 | PutSymKey(ExportQualifiedTree, SymName, Sym) ; | |
8459 | PutExportUndeclared (ModSym, Sym) | |
8460 | ELSE | |
8461 | Sym := GetDeclareSym(tokenno, SymName) ; | |
8462 | PutSymKey(ExportQualifiedTree, SymName, Sym) ; | |
8463 | PutExportUndeclared (ModSym, Sym) | |
8464 | END | |
8465 | END | |
8466 | ||
8467 | ELSE | |
8468 | InternalError ('expecting a DefImp symbol') | |
8469 | END | |
8470 | END | |
8471 | END PutExportQualified ; | |
8472 | ||
8473 | ||
8474 | (* | |
8475 | PutExportUnQualified - places a symbol with the name, SymName, | |
8476 | into the export tree of the | |
8477 | Definition module being compiled. | |
8478 | The symbol with Name has been EXPORT UNQUALIFIED | |
8479 | by the definition module and therefore any reference | |
8480 | to this symbol in the code generation phase | |
8481 | will be in the form _Name. | |
8482 | *) | |
8483 | ||
8484 | PROCEDURE PutExportUnQualified (tokenno: CARDINAL; SymName: Name) ; | |
8485 | VAR | |
8486 | pSym : PtrToSymbol ; | |
8487 | n : Name ; | |
8488 | Sym, | |
8489 | ModSym: CARDINAL ; | |
8490 | BEGIN | |
8491 | ModSym := GetCurrentModule() ; | |
8492 | Assert(IsDefImp(ModSym)) ; | |
8493 | Assert(CompilingDefinitionModule() OR (GetSymName(ModSym)=MakeKey('SYSTEM'))) ; | |
8494 | pSym := GetPsym(ModSym) ; | |
8495 | WITH pSym^ DO | |
8496 | CASE SymbolType OF | |
8497 | ||
8498 | DefImpSym: WITH DefImp DO | |
8499 | IF (GetSymKey(ExportUnQualifiedTree, SymName)#NulKey) AND | |
8500 | (GetSymKey(ExportRequest, SymName)=NulKey) | |
8501 | THEN | |
8502 | n := GetSymName(ModSym) ; | |
8503 | WriteFormat2('identifier (%a) has already been exported from MODULE %a', | |
8504 | SymName, n) | |
8505 | ELSIF GetSymKey(ExportRequest, SymName)#NulKey | |
8506 | THEN | |
8507 | Sym := GetSymKey(ExportRequest, SymName) ; | |
8508 | DelSymKey(ExportRequest, SymName) ; | |
8509 | PutSymKey(ExportUnQualifiedTree, SymName, Sym) ; | |
8510 | PutExportUndeclared(ModSym, Sym) | |
8511 | ELSE | |
8512 | Sym := GetDeclareSym(tokenno, SymName) ; | |
8513 | PutSymKey(ExportUnQualifiedTree, SymName, Sym) ; | |
8514 | PutExportUndeclared(ModSym, Sym) | |
8515 | END | |
8516 | END | |
8517 | ||
8518 | ELSE | |
8519 | InternalError ('expecting a DefImp symbol') | |
8520 | END | |
8521 | END | |
8522 | END PutExportUnQualified ; | |
8523 | ||
8524 | ||
8525 | (* | |
8526 | GetExported - returns the symbol which has a name SymName, | |
8527 | and is exported from the definition module ModSym. | |
8528 | ||
8529 | *) | |
8530 | ||
8531 | PROCEDURE GetExported (tokenno: CARDINAL; | |
8532 | ModSym: CARDINAL; | |
8533 | SymName: Name) : CARDINAL ; | |
8534 | VAR | |
8535 | pSym: PtrToSymbol ; | |
8536 | Sym : CARDINAL ; | |
8537 | BEGIN | |
8538 | pSym := GetPsym(ModSym) ; | |
8539 | WITH pSym^ DO | |
8540 | CASE SymbolType OF | |
8541 | ||
8542 | DefImpSym: Sym := RequestFromDefinition (tokenno, ModSym, SymName) | | |
8543 | ModuleSym: Sym := RequestFromModule (tokenno, ModSym, SymName) | |
8544 | ||
8545 | ELSE | |
8546 | InternalError ('expecting a DefImp symbol') | |
8547 | END | |
8548 | END ; | |
8549 | RETURN( Sym ) | |
8550 | END GetExported ; | |
8551 | ||
8552 | ||
8553 | (* | |
8554 | RequestFromModule - returns a symbol from module ModSym with name, SymName. | |
8555 | *) | |
8556 | ||
8557 | PROCEDURE RequestFromModule (tok: CARDINAL; ModSym: CARDINAL; SymName: Name) : CARDINAL ; | |
8558 | VAR | |
8559 | pSym: PtrToSymbol ; | |
8560 | Sym : CARDINAL ; | |
8561 | BEGIN | |
8562 | pSym := GetPsym(ModSym) ; | |
8563 | WITH pSym^ DO | |
8564 | CASE SymbolType OF | |
8565 | ||
8566 | DefImpSym: WITH DefImp DO | |
8567 | Sym := GetSymKey (LocalSymbols, SymName) ; | |
8568 | IF Sym=NulSym | |
8569 | THEN | |
8570 | Sym := FetchUnknownFromDefImp (tok, ModSym, SymName) | |
8571 | END | |
8572 | END | | |
8573 | ||
8574 | ModuleSym: WITH Module DO | |
8575 | Sym := GetSymKey (LocalSymbols, SymName) ; | |
8576 | IF Sym=NulSym | |
8577 | THEN | |
8578 | Sym := FetchUnknownFromModule (tok, ModSym, SymName) | |
8579 | END | |
8580 | END | |
8581 | ||
8582 | ELSE | |
8583 | InternalError ('expecting a DefImp or Module symbol') | |
8584 | END | |
8585 | END ; | |
8586 | RETURN( Sym ) | |
8587 | END RequestFromModule ; | |
8588 | ||
8589 | ||
8590 | (* | |
8591 | RequestFromDefinition - returns a symbol from module ModSym with name, | |
8592 | SymName. | |
8593 | *) | |
8594 | ||
8595 | PROCEDURE RequestFromDefinition (tok: CARDINAL; | |
8596 | ModSym: CARDINAL; SymName: Name) : CARDINAL ; | |
8597 | VAR | |
8598 | pSym : PtrToSymbol ; | |
8599 | Sym : CARDINAL ; | |
8600 | OldScopePtr: CARDINAL ; | |
8601 | BEGIN | |
8602 | pSym := GetPsym(ModSym) ; | |
8603 | WITH pSym^ DO | |
8604 | CASE SymbolType OF | |
8605 | ||
8606 | DefImpSym: WITH DefImp DO | |
8607 | Sym := GetSymKey (ExportQualifiedTree, SymName) ; | |
8608 | IF Sym=NulSym | |
8609 | THEN | |
8610 | Sym := GetSymKey (ExportUnQualifiedTree, SymName) ; | |
8611 | IF Sym=NulSym | |
8612 | THEN | |
8613 | Sym := GetSymKey (ExportRequest, SymName) ; | |
8614 | IF Sym=NulSym | |
8615 | THEN | |
8616 | OldScopePtr := ScopePtr ; | |
8617 | StartScope (ModSym) ; | |
8618 | Sym := GetScopeSym (SymName, TRUE) ; | |
8619 | EndScope ; | |
8620 | Assert (OldScopePtr=ScopePtr) ; | |
8621 | IF Sym=NulSym | |
8622 | THEN | |
8623 | Sym := FetchUnknownFromDefImp (tok, ModSym, SymName) | |
8624 | ELSE | |
8625 | IF IsFieldEnumeration (Sym) | |
8626 | THEN | |
8627 | IF IsExported (ModSym, GetType (Sym)) | |
8628 | THEN | |
8629 | RETURN( Sym ) | |
8630 | END | |
8631 | END | |
8632 | END ; | |
8633 | PutSymKey (ExportRequest, SymName, Sym) | |
8634 | END | |
8635 | END | |
8636 | END | |
8637 | END | |
8638 | ||
8639 | ELSE | |
8640 | InternalError ('expecting a DefImp symbol') | |
8641 | END | |
8642 | END ; | |
8643 | RETURN( Sym ) | |
8644 | END RequestFromDefinition ; | |
8645 | ||
8646 | ||
8647 | (* | |
8648 | PutIncludedByDefinition - places a module symbol, Sym, into the | |
8649 | included list of the current definition module. | |
8650 | *) | |
8651 | ||
8652 | PROCEDURE PutIncludedByDefinition (Sym: CARDINAL) ; | |
8653 | VAR | |
8654 | pSym : PtrToSymbol ; | |
8655 | ModSym: CARDINAL ; | |
8656 | BEGIN | |
8657 | ModSym := GetCurrentModuleScope() ; | |
8658 | Assert(IsDefImp(ModSym)) ; | |
8659 | Assert(IsDefImp(Sym)) ; | |
8660 | pSym := GetPsym(ModSym) ; | |
8661 | WITH pSym^ DO | |
8662 | CASE SymbolType OF | |
8663 | ||
8664 | DefImpSym: IncludeItemIntoList(DefImp.DefIncludeList, Sym) | |
8665 | ||
8666 | ELSE | |
8667 | InternalError ('expecting a DefImp symbol') | |
8668 | END | |
8669 | END | |
8670 | END PutIncludedByDefinition ; | |
8671 | ||
8672 | ||
8673 | (* | |
8674 | IsIncludedByDefinition - returns TRUE if definition module symbol, Sym, was included | |
8675 | by ModSym's definition module. | |
8676 | *) | |
8677 | ||
8678 | PROCEDURE IsIncludedByDefinition (ModSym, Sym: CARDINAL) : BOOLEAN ; | |
8679 | VAR | |
8680 | pSym: PtrToSymbol ; | |
8681 | BEGIN | |
8682 | Assert(IsDefImp(ModSym)) ; | |
8683 | Assert(IsDefImp(Sym)) ; | |
8684 | pSym := GetPsym(ModSym) ; | |
8685 | WITH pSym^ DO | |
8686 | CASE SymbolType OF | |
8687 | ||
8688 | DefImpSym: RETURN( IsItemInList(DefImp.DefIncludeList, Sym) ) | |
8689 | ||
8690 | ELSE | |
8691 | InternalError ('expecting a DefImp symbol') | |
8692 | END | |
8693 | END | |
8694 | END IsIncludedByDefinition ; | |
8695 | ||
8696 | ||
8697 | (* | |
8698 | GetWhereImported - returns the token number where this symbol | |
8699 | was imported into the current module. | |
8700 | *) | |
8701 | ||
8702 | PROCEDURE GetWhereImported (Sym: CARDINAL) : CARDINAL ; | |
8703 | VAR | |
8704 | pSym: PtrToSymbol ; | |
8705 | BEGIN | |
8706 | pSym := GetPsym(GetCurrentModuleScope()) ; | |
8707 | WITH pSym^ DO | |
8708 | CASE SymbolType OF | |
8709 | ||
8710 | DefImpSym: RETURN( GetSymKey(DefImp.WhereImported, Sym) ) | | |
8711 | ModuleSym: RETURN( GetSymKey(Module.WhereImported, Sym) ) | |
8712 | ||
8713 | ELSE | |
8714 | InternalError ('expecting DefImp or Module symbol') | |
8715 | END | |
8716 | END | |
8717 | END GetWhereImported ; | |
8718 | ||
8719 | ||
8720 | (* | |
8721 | DisplayName - displays the name. | |
8722 | *) | |
8723 | ||
8724 | PROCEDURE DisplayName (sym: WORD) ; | |
8725 | BEGIN | |
8726 | printf1(' %a', sym) | |
8727 | END DisplayName ; | |
8728 | ||
8729 | ||
8730 | (* | |
8731 | DisplaySymbol - displays the name of a symbol | |
8732 | *) | |
8733 | ||
8734 | PROCEDURE DisplaySymbol (sym: WORD) ; | |
8735 | VAR | |
8736 | s: String ; | |
8737 | BEGIN | |
8738 | s := Mark(InitStringCharStar(KeyToCharStar(GetSymName(sym)))) ; | |
8739 | printf2(' %s (%d)', s, sym) | |
8740 | END DisplaySymbol ; | |
8741 | ||
8742 | ||
8743 | (* | |
8744 | DisplayTrees - displays the SymbolTrees for Module symbol, ModSym. | |
8745 | *) | |
8746 | ||
8747 | PROCEDURE DisplayTrees (ModSym: CARDINAL) ; | |
8748 | VAR | |
8749 | pSym: PtrToSymbol ; | |
8750 | n : Name ; | |
8751 | BEGIN | |
8752 | n := GetSymName(ModSym) ; | |
8753 | printf1('Symbol trees for module/procedure: %a\n', n) ; | |
8754 | pSym := GetPsym(ModSym) ; | |
8755 | WITH pSym^ DO | |
8756 | CASE SymbolType OF | |
8757 | ||
8758 | DefImpSym: WITH DefImp DO | |
8759 | n := GetSymName(ModSym) ; | |
8760 | printf1('%a UndefinedTree', n) ; | |
8761 | ForeachNodeDo(Unresolved, DisplaySymbol) ; printf0('\n') ; | |
8762 | printf1('%a Local symbols', n) ; | |
8763 | ForeachNodeDo(LocalSymbols, DisplaySymbol) ; printf0('\n') ; | |
8764 | printf1('%a ExportRequest', n) ; | |
8765 | ForeachNodeDo(ExportRequest, DisplaySymbol) ; printf0('\n') ; | |
8766 | printf1('%a ExportQualified', n) ; | |
8767 | ForeachNodeDo(ExportQualifiedTree, DisplaySymbol) ; printf0('\n') ; | |
8768 | printf1('%a ExportUnQualified', n) ; | |
8769 | ForeachNodeDo(ExportUnQualifiedTree, DisplaySymbol) ; printf0('\n') ; | |
8770 | printf1('%a ExportUndeclared', n) ; | |
8771 | ForeachNodeDo(ExportUndeclared, DisplaySymbol) ; printf0('\n') ; | |
8772 | printf1('%a DeclaredObjects', n) ; | |
8773 | ForeachNodeDo(NamedObjects, DisplaySymbol) ; printf0('\n') ; | |
8774 | printf1('%a ImportedObjects', n) ; | |
8775 | ForeachNodeDo(NamedImports, DisplayName) ; printf0('\n') | |
8776 | END | | |
8777 | ModuleSym: WITH Module DO | |
8778 | n := GetSymName(ModSym) ; | |
8779 | printf1('%a UndefinedTree', n) ; | |
8780 | ForeachNodeDo(Unresolved, DisplaySymbol) ; printf0('\n') ; | |
8781 | printf1('%a Local symbols', n) ; | |
8782 | ForeachNodeDo(LocalSymbols, DisplaySymbol) ; printf0('\n') ; | |
8783 | printf1('%a ImportTree', n) ; | |
8784 | ForeachNodeDo(ImportTree, DisplaySymbol) ; printf0('\n') ; | |
8785 | printf1('%a ExportTree', n) ; | |
8786 | ForeachNodeDo(ExportTree, DisplaySymbol) ; printf0('\n') ; | |
8787 | printf1('%a ExportUndeclared', n) ; | |
8788 | ForeachNodeDo(ExportUndeclared, DisplaySymbol) ; printf0('\n') ; | |
8789 | printf1('%a DeclaredObjects', n) ; | |
8790 | ForeachNodeDo(NamedObjects, DisplaySymbol) ; printf0('\n') ; | |
8791 | printf1('%a ImportedObjects', n) ; | |
8792 | ForeachNodeDo(NamedImports, DisplayName) ; printf0('\n') | |
8793 | END | | |
8794 | ProcedureSym: WITH Procedure DO | |
8795 | n := GetSymName(ModSym) ; | |
8796 | printf1('%a UndefinedTree', n) ; | |
8797 | ForeachNodeDo(Unresolved, DisplaySymbol) ; printf0('\n') ; | |
8798 | printf1('%a Local symbols', n) ; | |
8799 | ForeachNodeDo(LocalSymbols, DisplaySymbol) ; printf0('\n') ; | |
8800 | printf1('%a DeclaredObjects', n) ; | |
8801 | ForeachNodeDo(NamedObjects, DisplayName) ; printf0('\n') | |
8802 | END | |
8803 | ||
8804 | ELSE | |
8805 | InternalError ('expecting DefImp symbol') | |
8806 | END | |
8807 | END | |
8808 | END DisplayTrees ; | |
8809 | ||
8810 | ||
8811 | (* | |
8812 | FetchUnknownFromModule - returns an Unknown symbol from module, ModSym. | |
8813 | *) | |
8814 | ||
8815 | PROCEDURE FetchUnknownFromModule (tok: CARDINAL; | |
8816 | ModSym: CARDINAL; | |
8817 | SymName: Name) : CARDINAL ; | |
8818 | VAR | |
8819 | pSym: PtrToSymbol ; | |
8820 | Sym : CARDINAL ; | |
8821 | BEGIN | |
8822 | pSym := GetPsym (ModSym) ; | |
8823 | WITH pSym^ DO | |
8824 | CASE SymbolType OF | |
8825 | ModuleSym: WITH Module DO | |
8826 | Sym := GetSymKey (Unresolved, SymName) ; | |
8827 | IF Sym=NulSym | |
8828 | THEN | |
8829 | NewSym (Sym) ; | |
8830 | FillInUnknownFields (tok, Sym, SymName) ; | |
8831 | PutSymKey (Unresolved, SymName, Sym) | |
8832 | END | |
8833 | END | |
8834 | ELSE | |
8835 | InternalError ('expecting a Module symbol') | |
8836 | END | |
8837 | END ; | |
8838 | RETURN( Sym ) | |
8839 | END FetchUnknownFromModule ; | |
8840 | ||
8841 | ||
8842 | (* | |
8843 | FetchUnknownFromDefImp - returns an Unknown symbol from module, ModSym. | |
8844 | *) | |
8845 | ||
8846 | PROCEDURE FetchUnknownFromDefImp (tok: CARDINAL; | |
8847 | ModSym: CARDINAL; | |
8848 | SymName: Name) : CARDINAL ; | |
8849 | VAR | |
8850 | pSym: PtrToSymbol ; | |
8851 | Sym : CARDINAL ; | |
8852 | BEGIN | |
8853 | pSym := GetPsym (ModSym) ; | |
8854 | WITH pSym^ DO | |
8855 | CASE SymbolType OF | |
8856 | DefImpSym: WITH DefImp DO | |
8857 | Sym := GetSymKey (Unresolved , SymName) ; | |
8858 | IF Sym=NulSym | |
8859 | THEN | |
8860 | NewSym(Sym) ; | |
8861 | FillInUnknownFields (tok, Sym, SymName) ; | |
8862 | PutSymKey (Unresolved, SymName, Sym) | |
8863 | END | |
8864 | END | |
8865 | ELSE | |
8866 | InternalError ('expecting a DefImp symbol') | |
8867 | END | |
8868 | END ; | |
8869 | RETURN( Sym ) | |
8870 | END FetchUnknownFromDefImp ; | |
8871 | ||
8872 | ||
8873 | PROCEDURE FetchUnknownFrom (tok: CARDINAL; | |
8874 | scope: CARDINAL; | |
8875 | SymName: Name) : CARDINAL ; | |
8876 | VAR | |
8877 | pSym: PtrToSymbol ; | |
8878 | Sym : CARDINAL ; | |
8879 | BEGIN | |
8880 | pSym := GetPsym(scope) ; | |
8881 | WITH pSym^ DO | |
8882 | CASE SymbolType OF | |
8883 | DefImpSym: WITH DefImp DO | |
8884 | Sym := GetSymKey(Unresolved, SymName) ; | |
8885 | IF Sym=NulSym | |
8886 | THEN | |
8887 | NewSym(Sym) ; | |
8888 | FillInUnknownFields (tok, Sym, SymName) ; | |
8889 | PutSymKey(Unresolved, SymName, Sym) | |
8890 | END | |
8891 | END | | |
8892 | ModuleSym: WITH Module DO | |
8893 | Sym := GetSymKey(Unresolved, SymName) ; | |
8894 | IF Sym=NulSym | |
8895 | THEN | |
8896 | NewSym(Sym) ; | |
8897 | FillInUnknownFields (tok, Sym, SymName) ; | |
8898 | PutSymKey(Unresolved, SymName, Sym) | |
8899 | END | |
8900 | END | | |
8901 | ProcedureSym: WITH Procedure DO | |
8902 | Sym := GetSymKey(Unresolved, SymName) ; | |
8903 | IF Sym=NulSym | |
8904 | THEN | |
8905 | NewSym(Sym) ; | |
8906 | FillInUnknownFields (tok, Sym, SymName) ; | |
8907 | PutSymKey(Unresolved, SymName, Sym) | |
8908 | END | |
8909 | END | |
8910 | ||
8911 | ELSE | |
8912 | InternalError ('expecting a DefImp or Module or Procedure symbol') | |
8913 | END | |
8914 | END ; | |
8915 | RETURN( Sym ) | |
8916 | END FetchUnknownFrom ; | |
8917 | ||
8918 | ||
8919 | (* | |
8920 | GetFromOuterModule - returns a symbol with name, SymName, which comes | |
8921 | from outside the current module. | |
8922 | *) | |
8923 | ||
8924 | PROCEDURE GetFromOuterModule (tokenno: CARDINAL; SymName: Name) : CARDINAL ; | |
8925 | VAR | |
8926 | pCall : PtrToCallFrame ; | |
8927 | ScopeId : CARDINAL ; | |
8928 | Sym, | |
8929 | ScopeSym: CARDINAL ; | |
8930 | BEGIN | |
8931 | ScopeId := ScopePtr ; | |
8932 | pCall := GetPcall(ScopeId) ; | |
8933 | WHILE (NOT IsModule(pCall^.Search)) AND | |
8934 | (NOT IsDefImp(pCall^.Search)) DO | |
8935 | Assert (ScopeId>0) ; | |
8936 | DEC (ScopeId) ; | |
8937 | pCall := GetPcall (ScopeId) | |
8938 | END ; | |
8939 | DEC (ScopeId) ; | |
8940 | (* we are now below the current module *) | |
8941 | WHILE ScopeId>0 DO | |
8942 | pCall := GetPcall(ScopeId) ; | |
8943 | ScopeSym := pCall^.Search ; | |
8944 | IF ScopeSym#NulSym | |
8945 | THEN | |
8946 | Sym := GetLocalSym(ScopeSym, SymName) ; | |
8947 | IF Sym=NulSym | |
8948 | THEN | |
8949 | IF IsModule(ScopeSym) OR IsProcedure(ScopeSym) OR IsDefImp(ScopeSym) | |
8950 | THEN | |
8951 | IF Sym=NulSym | |
8952 | THEN | |
8953 | Sym := ExamineUnresolvedTree(ScopeSym, SymName) ; | |
8954 | IF Sym#NulSym | |
8955 | THEN | |
8956 | RETURN( Sym ) | |
8957 | END | |
8958 | END | |
8959 | END | |
8960 | ELSE | |
8961 | RETURN( Sym ) | |
8962 | END | |
8963 | END ; | |
8964 | DEC(ScopeId) ; | |
8965 | pCall := GetPcall(ScopeId) | |
8966 | END ; | |
8967 | (* at this point we force an unknown from the last module scope *) | |
8968 | RETURN( RequestFromModule (tokenno, GetLastModuleScope(), SymName) ) | |
8969 | END GetFromOuterModule ; | |
8970 | ||
8971 | ||
8972 | (* | |
8973 | IsExportUnQualified - returns true if a symbol, Sym, was defined as | |
8974 | being EXPORT UNQUALIFIED. | |
8975 | *) | |
8976 | ||
8977 | PROCEDURE IsExportUnQualified (Sym: CARDINAL) : BOOLEAN ; | |
8978 | VAR | |
8979 | pSym : PtrToSymbol ; | |
8980 | OuterModule: CARDINAL ; | |
8981 | BEGIN | |
8982 | OuterModule := Sym ; | |
8983 | REPEAT | |
8984 | OuterModule := GetScope(OuterModule) | |
8985 | UNTIL GetScope(OuterModule)=NulSym ; | |
8986 | pSym := GetPsym(OuterModule) ; | |
8987 | WITH pSym^ DO | |
8988 | CASE SymbolType OF | |
8989 | ||
8990 | ModuleSym: RETURN( FALSE ) | | |
8991 | DefImpSym: RETURN( GetSymKey( | |
8992 | DefImp.ExportUnQualifiedTree, | |
8993 | GetSymName(Sym) | |
8994 | )=Sym | |
8995 | ) | |
8996 | ||
8997 | ELSE | |
8998 | InternalError ('expecting a DefImp or Module symbol') | |
8999 | END | |
9000 | END | |
9001 | END IsExportUnQualified ; | |
9002 | ||
9003 | ||
9004 | (* | |
9005 | IsExportQualified - returns true if a symbol, Sym, was defined as | |
9006 | being EXPORT QUALIFIED. | |
9007 | Sym is expected to be either a procedure or a | |
9008 | variable. | |
9009 | *) | |
9010 | ||
9011 | PROCEDURE IsExportQualified (Sym: CARDINAL) : BOOLEAN ; | |
9012 | VAR | |
9013 | pSym : PtrToSymbol ; | |
9014 | OuterModule: CARDINAL ; | |
9015 | BEGIN | |
9016 | OuterModule := Sym ; | |
9017 | REPEAT | |
9018 | OuterModule := GetScope(OuterModule) | |
9019 | UNTIL GetScope(OuterModule)=NulSym ; | |
9020 | pSym := GetPsym(OuterModule) ; | |
9021 | WITH pSym^ DO | |
9022 | CASE SymbolType OF | |
9023 | ||
9024 | ModuleSym: RETURN( FALSE ) | | |
9025 | DefImpSym: RETURN( GetSymKey(DefImp.ExportQualifiedTree, GetSymName(Sym))=Sym ) | |
9026 | ||
9027 | ELSE | |
9028 | InternalError ('expecting a DefImp or Module symbol') | |
9029 | END | |
9030 | END | |
9031 | END IsExportQualified ; | |
9032 | ||
9033 | ||
9034 | (* | |
9035 | ForeachImportedDo - calls a procedure, P, foreach imported symbol | |
9036 | in module, ModSym. | |
9037 | *) | |
9038 | ||
9039 | PROCEDURE ForeachImportedDo (ModSym: CARDINAL; P: PerformOperation) ; | |
9040 | VAR | |
9041 | pSym: PtrToSymbol ; | |
9042 | BEGIN | |
9043 | pSym := GetPsym(ModSym) ; | |
9044 | WITH pSym^ DO | |
9045 | CASE SymbolType OF | |
9046 | ||
9047 | DefImpSym: WITH DefImp DO | |
9048 | ForeachNodeDo( ImportTree, P ) ; | |
9049 | ForeachItemInListDo( IncludeList, P ) | |
9050 | END | | |
9051 | ModuleSym: WITH Module DO | |
9052 | ForeachNodeDo( ImportTree, P ) ; | |
9053 | ForeachItemInListDo( IncludeList, P ) | |
9054 | END | |
9055 | ||
9056 | ELSE | |
9057 | InternalError ('expecting a DefImp or Module symbol') | |
9058 | END | |
9059 | END | |
9060 | END ForeachImportedDo ; | |
9061 | ||
9062 | ||
9063 | (* | |
9064 | ForeachExportedDo - calls a procedure, P, foreach imported symbol | |
9065 | in module, ModSym. | |
9066 | *) | |
9067 | ||
9068 | PROCEDURE ForeachExportedDo (ModSym: CARDINAL; P: PerformOperation) ; | |
9069 | VAR | |
9070 | pSym: PtrToSymbol ; | |
9071 | BEGIN | |
9072 | pSym := GetPsym(ModSym) ; | |
9073 | WITH pSym^ DO | |
9074 | CASE SymbolType OF | |
9075 | ||
9076 | DefImpSym: WITH DefImp DO | |
9077 | ForeachNodeDo( ExportQualifiedTree, P ) ; | |
9078 | ForeachNodeDo( ExportUnQualifiedTree, P ) | |
9079 | END | | |
9080 | ModuleSym: WITH Module DO | |
9081 | ForeachNodeDo( ExportTree, P ) | |
9082 | END | |
9083 | ||
9084 | ELSE | |
9085 | InternalError ('expecting a DefImp or Module symbol') | |
9086 | END | |
9087 | END | |
9088 | END ForeachExportedDo ; | |
9089 | ||
9090 | ||
9091 | (* | |
9092 | ForeachLocalSymDo - foreach local symbol in module, Sym, or procedure, Sym, | |
9093 | perform the procedure, P. | |
9094 | *) | |
9095 | ||
9096 | PROCEDURE ForeachLocalSymDo (Sym: CARDINAL; P: PerformOperation) ; | |
9097 | VAR | |
9098 | pSym: PtrToSymbol ; | |
9099 | BEGIN | |
9100 | pSym := GetPsym(Sym) ; | |
9101 | WITH pSym^ DO | |
9102 | CASE SymbolType OF | |
9103 | ||
9104 | DefImpSym: WITH DefImp DO | |
9105 | ForeachNodeDo( LocalSymbols, P ) | |
9106 | END | | |
9107 | ModuleSym: WITH Module DO | |
9108 | ForeachNodeDo( LocalSymbols, P ) | |
9109 | END | | |
9110 | ProcedureSym: WITH Procedure DO | |
9111 | ForeachNodeDo( LocalSymbols, P ) | |
9112 | END | | |
9113 | RecordSym: WITH Record DO | |
9114 | ForeachNodeDo( LocalSymbols, P ) | |
9115 | END | | |
9116 | EnumerationSym: WITH Enumeration DO | |
9117 | ForeachNodeDo( LocalSymbols, P ) | |
9118 | END | |
9119 | ||
9120 | ELSE | |
9121 | InternalError ('expecting a DefImp, Module or Procedure symbol') | |
9122 | END | |
9123 | END | |
9124 | END ForeachLocalSymDo ; | |
9125 | ||
9126 | ||
b80e3c46 GM |
9127 | (* |
9128 | ForeachParamSymDo - foreach parameter symbol in procedure, Sym, | |
9129 | perform the procedure, P. Each symbol | |
9130 | looked up will be VarParam or Param | |
9131 | (not the shadow variable). | |
9132 | *) | |
9133 | ||
9134 | PROCEDURE ForeachParamSymDo (Sym: CARDINAL; P: PerformOperation) ; | |
9135 | VAR | |
9136 | param: CARDINAL ; | |
9137 | p, i : CARDINAL ; | |
9138 | BEGIN | |
9139 | IF IsProcedure (Sym) | |
9140 | THEN | |
9141 | p := NoOfParam (Sym) ; | |
9142 | i := p ; | |
9143 | WHILE i>0 DO | |
9144 | param := GetNthParam (Sym, i) ; | |
9145 | P (param) ; | |
9146 | DEC(i) | |
9147 | END | |
9148 | END | |
9149 | END ForeachParamSymDo ; | |
9150 | ||
9151 | ||
1eee94d3 GM |
9152 | (* |
9153 | CheckForUnknownInModule - checks for any unknown symbols in the | |
9154 | current module. | |
9155 | If any unknown symbols are found then | |
9156 | an error message is displayed. | |
9157 | *) | |
9158 | ||
9159 | PROCEDURE CheckForUnknownInModule ; | |
9160 | VAR | |
9161 | pSym: PtrToSymbol ; | |
9162 | BEGIN | |
9163 | pSym := GetPsym(GetCurrentModuleScope()) ; | |
9164 | WITH pSym^ DO | |
9165 | CASE SymbolType OF | |
9166 | ||
9167 | DefImpSym: WITH DefImp DO | |
990d10ab GM |
9168 | CheckForUnknowns (name, ExportQualifiedTree, |
9169 | 'EXPORT QUALIFIED') ; | |
9170 | CheckForUnknowns (name, ExportUnQualifiedTree, | |
9171 | 'EXPORT UNQUALIFIED') ; | |
9172 | CheckForSymbols (ExportRequest, | |
9173 | 'requested by another modules import (symbols have not been exported by the appropriate definition module)') ; | |
9174 | CheckForUnknowns (name, Unresolved, 'unresolved') ; | |
9175 | CheckForUnknowns (name, LocalSymbols, 'locally used') | |
1eee94d3 GM |
9176 | END | |
9177 | ModuleSym: WITH Module DO | |
990d10ab GM |
9178 | CheckForUnknowns (name, Unresolved, 'unresolved') ; |
9179 | CheckForUnknowns (name, ExportUndeclared, 'exported but undeclared') ; | |
9180 | CheckForUnknowns (name, ExportTree, 'exported but undeclared') ; | |
9181 | CheckForUnknowns (name, LocalSymbols, 'locally used') | |
1eee94d3 GM |
9182 | END |
9183 | ||
9184 | ELSE | |
9185 | InternalError ('expecting a DefImp or Module symbol') | |
9186 | END | |
9187 | END | |
9188 | END CheckForUnknownInModule ; | |
9189 | ||
9190 | ||
9191 | (* | |
9192 | UnknownSymbolError - displays symbol name for symbol, sym. | |
9193 | *) | |
9194 | ||
9195 | PROCEDURE UnknownSymbolError (sym: WORD) ; | |
9196 | BEGIN | |
9197 | IF IsUnreportedUnknown (sym) | |
9198 | THEN | |
9199 | IncludeElementIntoSet (ReportedUnknowns, sym) ; | |
9200 | MetaErrorStringT1 (GetFirstUsed (sym), InitString ("unknown symbol {%1EUad}"), sym) | |
9201 | END | |
9202 | END UnknownSymbolError ; | |
9203 | ||
9204 | ||
9205 | (* | |
9206 | UnknownReported - if sym is an unknown symbol and has not been reported | |
9207 | then include it into the set of reported unknowns. | |
9208 | *) | |
9209 | ||
9210 | PROCEDURE UnknownReported (sym: CARDINAL) ; | |
9211 | BEGIN | |
9212 | IF IsUnreportedUnknown (sym) | |
9213 | THEN | |
9214 | IncludeElementIntoSet (ReportedUnknowns, sym) | |
9215 | END | |
9216 | END UnknownReported ; | |
9217 | ||
9218 | ||
9219 | (* | |
9220 | IsUnreportedUnknown - returns TRUE if symbol, sym, has not been | |
9221 | reported and is an unknown symbol. | |
9222 | *) | |
9223 | ||
9224 | PROCEDURE IsUnreportedUnknown (sym: CARDINAL) : BOOLEAN ; | |
9225 | BEGIN | |
9226 | RETURN IsUnknown (sym) AND (NOT IsElementInSet (ReportedUnknowns, sym)) | |
9227 | END IsUnreportedUnknown ; | |
9228 | ||
9229 | ||
9230 | VAR | |
9231 | ListifySentance : String ; | |
9232 | ListifyTotal, | |
9233 | ListifyWordCount: CARDINAL ; | |
9234 | ||
9235 | ||
9236 | (* | |
9237 | AddListify - | |
9238 | *) | |
9239 | ||
9240 | PROCEDURE AddListify (sym: CARDINAL) ; | |
9241 | BEGIN | |
9242 | INC (ListifyWordCount) ; | |
29c82c6c GM |
9243 | (* printf ("AddListify: ListifyWordCount = %d, ListifyTotal = %d\n", |
9244 | ListifyWordCount, ListifyTotal) ; *) | |
9245 | IF ListifyWordCount > 1 | |
1eee94d3 | 9246 | THEN |
29c82c6c GM |
9247 | IF ListifyWordCount = ListifyTotal |
9248 | THEN | |
9249 | ListifySentance := ConCat (ListifySentance, Mark (InitString (" and "))) | |
9250 | ELSE | |
9251 | ListifySentance := ConCat (ListifySentance, Mark (InitString (", "))) | |
9252 | END | |
1eee94d3 GM |
9253 | END ; |
9254 | ListifySentance := ConCat (ListifySentance, | |
9255 | Mark (InitStringCharStar (KeyToCharStar (GetSymName (sym))))) | |
9256 | END AddListify ; | |
9257 | ||
9258 | ||
9259 | (* | |
9260 | Listify - convert tree into a string list and return the result. | |
9261 | *) | |
9262 | ||
9263 | PROCEDURE Listify (tree: SymbolTree; isCondition: IsSymbol) : String ; | |
9264 | BEGIN | |
9265 | ListifyTotal := NoOfNodes (tree, isCondition) ; | |
9266 | ListifyWordCount := 0 ; | |
9267 | ListifySentance := InitString ('') ; | |
9268 | ForeachNodeConditionDo (tree, isCondition, AddListify) ; | |
9269 | RETURN ListifySentance | |
9270 | END Listify ; | |
9271 | ||
9272 | ||
9273 | (* | |
9274 | CheckForUnknowns - checks a binary tree, Tree, to see whether it contains | |
9275 | an unknown symbol. All unknown symbols are displayed | |
9276 | together with an error message. | |
9277 | *) | |
9278 | ||
9279 | PROCEDURE CheckForUnknowns (name: Name; Tree: SymbolTree; | |
9280 | a: ARRAY OF CHAR) ; | |
9281 | VAR | |
9282 | s: String ; | |
9283 | BEGIN | |
9284 | IF DoesTreeContainAny(Tree, IsUnreportedUnknown) | |
9285 | THEN | |
9286 | CurrentError := NewError(GetTokenNo()) ; | |
9287 | s := InitString("{%E} the following unknown symbols in module %<") ; | |
9288 | s := ConCat(s, Mark(InitStringCharStar(KeyToCharStar(name)))) ; | |
9289 | s := ConCat(s, Mark(InitString('%> were '))) ; | |
9290 | s := ConCat(s, Mark(InitString(a))) ; | |
9291 | s := ConCat (s, Mark (InitString (': '))) ; | |
9292 | s := ConCat (s, Mark (Listify (Tree, IsUnreportedUnknown))) ; | |
9293 | MetaErrorStringT0(GetTokenNo(), s) ; | |
9294 | ForeachNodeDo(Tree, UnknownSymbolError) | |
9295 | END | |
9296 | END CheckForUnknowns ; | |
9297 | ||
9298 | ||
9299 | (* | |
9300 | SymbolError - displays symbol name for symbol, Sym. | |
9301 | *) | |
9302 | ||
9303 | PROCEDURE SymbolError (Sym: WORD) ; | |
9304 | VAR | |
9305 | e: Error ; | |
9306 | n: Name ; | |
9307 | BEGIN | |
9308 | n := GetSymName(Sym) ; | |
9309 | e := ChainError(GetFirstUsed(Sym), CurrentError) ; | |
9310 | ErrorFormat1(e, "unknown symbol '%a' found", n) | |
9311 | END SymbolError ; | |
9312 | ||
9313 | ||
9314 | (* | |
9315 | CheckForSymbols - checks a binary tree, Tree, to see whether it contains | |
9316 | any symbol. The tree is expected to be empty, if not | |
9317 | then an error has occurred. | |
9318 | *) | |
9319 | ||
9320 | PROCEDURE CheckForSymbols (Tree: SymbolTree; a: ARRAY OF CHAR) ; | |
9321 | VAR | |
9322 | s: String ; | |
9323 | BEGIN | |
9324 | IF NOT IsEmptyTree(Tree) | |
9325 | THEN | |
9326 | s := InitString ("the symbols are unknown at the end of module {%1Ea} when ") ; | |
9327 | s := ConCat (s, Mark(InitString(a))) ; | |
9328 | MetaErrorString1 (s, MainModule) ; | |
9329 | ForeachNodeDo(Tree, SymbolError) | |
9330 | END | |
9331 | END CheckForSymbols ; | |
9332 | ||
9333 | ||
9334 | (* | |
9335 | PutExportUndeclared - places a symbol, Sym, into module, ModSym, | |
9336 | ExportUndeclared list provided that Sym | |
9337 | is unknown. | |
9338 | *) | |
9339 | ||
9340 | PROCEDURE PutExportUndeclared (ModSym: CARDINAL; Sym: CARDINAL) ; | |
9341 | VAR | |
9342 | pSym: PtrToSymbol ; | |
9343 | BEGIN | |
9344 | IF IsUnknown (Sym) | |
9345 | THEN | |
9346 | pSym := GetPsym (ModSym) ; | |
9347 | WITH pSym^ DO | |
9348 | CASE SymbolType OF | |
9349 | ||
9350 | ModuleSym: PutSymKey (Module.ExportUndeclared, GetSymName (Sym), Sym) | | |
9351 | DefImpSym: PutSymKey (DefImp.ExportUndeclared, GetSymName (Sym), Sym) | |
9352 | ||
9353 | ELSE | |
9354 | InternalError ('expecting a DefImp or Module symbol') | |
9355 | END | |
9356 | END | |
9357 | END | |
9358 | END PutExportUndeclared ; | |
9359 | ||
9360 | ||
9361 | (* | |
9362 | GetExportUndeclared - returns a symbol which has, name, from module, ModSym, | |
9363 | which is in the ExportUndeclared list. | |
9364 | *) | |
9365 | ||
9366 | PROCEDURE GetExportUndeclared (ModSym: CARDINAL; name: Name) : CARDINAL ; | |
9367 | VAR | |
9368 | pSym: PtrToSymbol ; | |
9369 | BEGIN | |
9370 | pSym := GetPsym(ModSym) ; | |
9371 | WITH pSym^ DO | |
9372 | CASE SymbolType OF | |
9373 | ||
9374 | ModuleSym: RETURN( GetSymKey(Module.ExportUndeclared, name) ) | | |
9375 | DefImpSym: RETURN( GetSymKey(DefImp.ExportUndeclared, name) ) | |
9376 | ||
9377 | ELSE | |
9378 | InternalError ('expecting a DefImp or Module symbol') | |
9379 | END | |
9380 | END | |
9381 | END GetExportUndeclared ; | |
9382 | ||
9383 | ||
9384 | (* | |
9385 | RemoveExportUndeclared - removes a symbol, Sym, from the module, ModSym, | |
9386 | ExportUndeclaredTree. | |
9387 | *) | |
9388 | ||
9389 | PROCEDURE RemoveExportUndeclared (ModSym: CARDINAL; Sym: CARDINAL) ; | |
9390 | VAR | |
9391 | pSym: PtrToSymbol ; | |
9392 | BEGIN | |
9393 | pSym := GetPsym(ModSym) ; | |
9394 | WITH pSym^ DO | |
9395 | CASE SymbolType OF | |
9396 | ||
9397 | ModuleSym: IF GetSymKey(Module.ExportUndeclared, GetSymName(Sym))=Sym | |
9398 | THEN | |
9399 | DelSymKey(Module.ExportUndeclared, GetSymName(Sym)) | |
9400 | END | | |
9401 | DefImpSym: IF GetSymKey(DefImp.ExportUndeclared, GetSymName(Sym))=Sym | |
9402 | THEN | |
9403 | DelSymKey(DefImp.ExportUndeclared, GetSymName(Sym)) | |
9404 | END | |
9405 | ||
9406 | ELSE | |
9407 | InternalError ('expecting a DefImp or Module symbol') | |
9408 | END | |
9409 | END | |
9410 | END RemoveExportUndeclared ; | |
9411 | ||
9412 | ||
9413 | (* | |
9414 | CheckForExportedDeclaration - checks to see whether a definition module | |
9415 | is currently being compiled, if so, | |
9416 | symbol, Sym, is removed from the | |
9417 | ExportUndeclared list. | |
9418 | This procedure is called whenever a symbol | |
9419 | is declared, thus attempting to reduce | |
9420 | the ExportUndeclared list. | |
9421 | *) | |
9422 | ||
9423 | PROCEDURE CheckForExportedDeclaration (Sym: CARDINAL) ; | |
9424 | BEGIN | |
9425 | IF CompilingDefinitionModule () | |
9426 | THEN | |
9427 | RemoveExportUndeclared(GetCurrentModule(), Sym) | |
9428 | END | |
9429 | END CheckForExportedDeclaration ; | |
9430 | ||
9431 | ||
9432 | (* | |
9433 | CheckForUndeclaredExports - displays an error and the offending symbols | |
9434 | which have been exported but not declared | |
9435 | from module, ModSym. | |
9436 | *) | |
9437 | ||
9438 | PROCEDURE CheckForUndeclaredExports (ModSym: CARDINAL) ; | |
9439 | VAR | |
9440 | pSym: PtrToSymbol ; | |
9441 | BEGIN | |
9442 | (* WriteString('Inside CheckForUndeclaredExports') ; WriteLn ; *) | |
9443 | pSym := GetPsym(ModSym) ; | |
9444 | WITH pSym^ DO | |
9445 | CASE SymbolType OF | |
9446 | ||
9447 | ModuleSym: IF NOT IsEmptyTree(Module.ExportUndeclared) | |
9448 | THEN | |
9449 | MetaError1('undeclared identifier(s) in EXPORT list of {%1ERd} {%1a}', ModSym) ; | |
9450 | ForeachNodeDo(Module.ExportUndeclared, UndeclaredSymbolError) | |
9451 | END | | |
9452 | DefImpSym: IF NOT IsEmptyTree(DefImp.ExportUndeclared) | |
9453 | THEN | |
9454 | IF DoesNotNeedExportList(ModSym) | |
9455 | THEN | |
9456 | MetaError1('undeclared identifier(s) in {%1ERd} {%1a}', ModSym) ; | |
9457 | ELSE | |
9458 | MetaError1('undeclared identifier(s) in export list of {%1ERd} {%1a}', ModSym) ; | |
9459 | END ; | |
9460 | ForeachNodeDo(DefImp.ExportUndeclared, UndeclaredSymbolError) | |
9461 | END | |
9462 | ||
9463 | ELSE | |
9464 | InternalError ('expecting a DefImp or Module symbol') | |
9465 | END | |
9466 | END | |
9467 | END CheckForUndeclaredExports ; | |
9468 | ||
9469 | ||
9470 | (* | |
9471 | UndeclaredSymbolError - displays symbol name for symbol, Sym. | |
9472 | *) | |
9473 | ||
9474 | PROCEDURE UndeclaredSymbolError (Sym: WORD) ; | |
9475 | BEGIN | |
9476 | IF DebugUnknowns | |
9477 | THEN | |
9478 | printf1('undeclared symbol (%d)\n', Sym) | |
9479 | END ; | |
9480 | MetaError1('{%1UC} undeclared symbol {%1a}', Sym) | |
9481 | END UndeclaredSymbolError ; | |
9482 | ||
9483 | ||
9484 | (* | |
9485 | PutExportUnImplemented - places a symbol, Sym, into the currently compiled | |
9486 | DefImp module NeedToBeImplemented list. | |
9487 | *) | |
9488 | ||
9489 | PROCEDURE PutExportUnImplemented (tokenno: CARDINAL; Sym: CARDINAL) ; | |
9490 | VAR | |
9491 | pSym: PtrToSymbol ; | |
9492 | BEGIN | |
9493 | pSym := GetPsym (CurrentModule) ; | |
9494 | WITH pSym^ DO | |
9495 | CASE SymbolType OF | |
9496 | ||
9497 | DefImpSym: IF GetSymKey (DefImp.NeedToBeImplemented, GetSymName (Sym)) = Sym | |
9498 | THEN | |
9499 | MetaErrorT2 (tokenno, 'symbol {%1a} is already exported from module {%2a}', | |
9500 | Sym, CurrentModule) | |
9501 | (* | |
9502 | n1 := GetSymName (Sym) ; | |
9503 | n2 := GetSymName (CurrentModule) ; | |
9504 | WriteFormat2 ('symbol (%a) already exported from module (%a)', n1, n2) | |
9505 | *) | |
9506 | ELSE | |
9507 | PutSymKey (DefImp.NeedToBeImplemented, GetSymName(Sym), Sym) | |
9508 | END | |
9509 | ||
9510 | ELSE | |
9511 | InternalError ('expecting a DefImp symbol') | |
9512 | END | |
9513 | END | |
9514 | END PutExportUnImplemented ; | |
9515 | ||
9516 | ||
9517 | (* | |
9518 | RemoveExportUnImplemented - removes a symbol, Sym, from the module, ModSym, | |
9519 | NeedToBeImplemented list. | |
9520 | *) | |
9521 | ||
9522 | PROCEDURE RemoveExportUnImplemented (ModSym: CARDINAL; Sym: CARDINAL) ; | |
9523 | VAR | |
9524 | pSym: PtrToSymbol ; | |
9525 | BEGIN | |
9526 | pSym := GetPsym(ModSym) ; | |
9527 | WITH pSym^ DO | |
9528 | CASE SymbolType OF | |
9529 | ||
9530 | DefImpSym: IF GetSymKey(DefImp.NeedToBeImplemented, GetSymName(Sym))=Sym | |
9531 | THEN | |
9532 | DelSymKey(DefImp.NeedToBeImplemented, GetSymName(Sym)) | |
9533 | END | |
9534 | ||
9535 | ELSE | |
9536 | InternalError ('expecting a DefImp symbol') | |
9537 | END | |
9538 | END | |
9539 | END RemoveExportUnImplemented ; | |
9540 | ||
9541 | ||
9542 | VAR | |
9543 | ExportRequestModule: CARDINAL ; | |
9544 | ||
9545 | ||
9546 | (* | |
9547 | RemoveFromExportRequest - | |
9548 | *) | |
9549 | ||
9550 | PROCEDURE RemoveFromExportRequest (Sym: CARDINAL) ; | |
9551 | VAR | |
9552 | pSym: PtrToSymbol ; | |
9553 | BEGIN | |
9554 | pSym := GetPsym(ExportRequestModule) ; | |
9555 | WITH pSym^ DO | |
9556 | CASE SymbolType OF | |
9557 | ||
9558 | DefImpSym: IF GetSymKey(DefImp.ExportRequest, GetSymName(Sym))=Sym | |
9559 | THEN | |
9560 | DelSymKey(DefImp.ExportRequest, GetSymName(Sym)) | |
9561 | END | |
9562 | ||
9563 | ELSE | |
9564 | InternalError ('expecting a DefImp symbol') | |
9565 | END | |
9566 | END | |
9567 | END RemoveFromExportRequest ; | |
9568 | ||
9569 | ||
9570 | (* | |
9571 | RemoveEnumerationFromExportRequest - removes enumeration symbol, sym, | |
9572 | (and its fields) from the ExportRequest tree. | |
9573 | *) | |
9574 | ||
9575 | PROCEDURE RemoveEnumerationFromExportRequest (ModSym: CARDINAL; Sym: CARDINAL) ; | |
9576 | BEGIN | |
9577 | IF IsEnumeration(Sym) | |
9578 | THEN | |
9579 | ExportRequestModule := ModSym ; | |
9580 | RemoveFromExportRequest(Sym) ; | |
9581 | ForeachLocalSymDo(Sym, RemoveFromExportRequest) | |
9582 | END | |
9583 | END RemoveEnumerationFromExportRequest ; | |
9584 | ||
9585 | ||
9586 | (* | |
9587 | CheckForExportedImplementation - checks to see whether an implementation | |
9588 | module is currently being compiled, if so, | |
9589 | symbol, Sym, is removed from the | |
9590 | NeedToBeImplemented list. | |
9591 | This procedure is called whenever a symbol | |
9592 | is declared, thus attempting to reduce | |
9593 | the NeedToBeImplemented list. | |
9594 | Only needs to be called when a TYPE or | |
9595 | PROCEDURE is built since the implementation | |
9596 | module can only implement these objects | |
9597 | declared in the definition module. | |
9598 | ||
9599 | It also checks whether a definition module | |
9600 | is currently being compiled and, if so, | |
9601 | it will ensure that symbol, Sym, is removed | |
9602 | from the ExportRequest list. If Sym is an | |
9603 | enumerated type it ensures that its fields | |
9604 | are also removed. | |
9605 | *) | |
9606 | ||
9607 | PROCEDURE CheckForExportedImplementation (Sym: CARDINAL) ; | |
9608 | BEGIN | |
9609 | IF CompilingImplementationModule() | |
9610 | THEN | |
9611 | RemoveExportUnImplemented(GetCurrentModule(), Sym) | |
9612 | END ; | |
9613 | IF CompilingDefinitionModule() AND IsEnumeration(Sym) | |
9614 | THEN | |
9615 | RemoveEnumerationFromExportRequest(GetCurrentModule(), Sym) | |
9616 | END | |
9617 | END CheckForExportedImplementation ; | |
9618 | ||
9619 | ||
9620 | (* | |
9621 | CheckForUnImplementedExports - displays an error and the offending symbols | |
9622 | which have been exported but not implemented | |
9623 | from the current compiled module. | |
9624 | *) | |
9625 | ||
9626 | PROCEDURE CheckForUnImplementedExports ; | |
9627 | VAR | |
9628 | pSym: PtrToSymbol ; | |
9629 | BEGIN | |
9630 | (* WriteString('Inside CheckForImplementedExports') ; WriteLn ; *) | |
9631 | pSym := GetPsym (CurrentModule) ; | |
9632 | WITH pSym^ DO | |
9633 | CASE SymbolType OF | |
9634 | ||
9635 | DefImpSym: IF NOT IsEmptyTree (DefImp.NeedToBeImplemented) | |
9636 | THEN | |
9637 | CurrentError := NewError (GetTokenNo ()) ; | |
9638 | ErrorFormat1 (CurrentError, 'unimplemented identifier(s) in EXPORT list of DEFINITION MODULE %a\nthe implementation module fails to implement the following exported identifier(s)', DefImp.name) ; | |
9639 | ForeachNodeDo (DefImp.NeedToBeImplemented, UnImplementedSymbolError) | |
9640 | END | |
9641 | ||
9642 | ELSE | |
9643 | InternalError ('expecting a DefImp symbol') | |
9644 | END | |
9645 | END | |
9646 | END CheckForUnImplementedExports ; | |
9647 | ||
9648 | ||
9649 | (* | |
9650 | UnImplementedSymbolError - displays symbol name for symbol, Sym. | |
9651 | *) | |
9652 | ||
9653 | PROCEDURE UnImplementedSymbolError (Sym: WORD) ; | |
9654 | VAR | |
9655 | n: Name ; | |
9656 | BEGIN | |
9657 | CurrentError := ChainError (GetFirstUsed (Sym), CurrentError) ; | |
9658 | IF IsType (Sym) | |
9659 | THEN | |
9660 | n := GetSymName(Sym) ; | |
9661 | ErrorFormat1 (CurrentError, 'hidden type is undeclared (%a)', n) | |
9662 | ELSIF IsProcedure (Sym) | |
9663 | THEN | |
9664 | n := GetSymName(Sym) ; | |
9665 | ErrorFormat1 (CurrentError, 'procedure is undeclared (%a)', n) | |
9666 | ELSIF IsProcType (Sym) | |
9667 | THEN | |
9668 | n := GetSymName(Sym) ; | |
9669 | ErrorFormat1 (CurrentError, 'procedure type is undeclared (%a)', n) | |
9670 | ELSE | |
9671 | ErrorFormat0 (CurrentError, 'undeclared symbol') | |
9672 | END | |
9673 | END UnImplementedSymbolError ; | |
9674 | ||
9675 | ||
9676 | (* | |
9677 | PutHiddenTypeDeclared - sets a flag in the current compiled module which | |
9678 | indicates that a Hidden Type is declared within | |
9679 | the implementation part of the module. | |
9680 | This procedure is expected to be called while | |
9681 | compiling the associated definition module. | |
9682 | *) | |
9683 | ||
9684 | PROCEDURE PutHiddenTypeDeclared ; | |
9685 | VAR | |
9686 | pSym: PtrToSymbol ; | |
9687 | BEGIN | |
9688 | pSym := GetPsym(CurrentModule) ; | |
9689 | WITH pSym^ DO | |
9690 | CASE SymbolType OF | |
9691 | ||
9692 | DefImpSym: DefImp.ContainsHiddenType := TRUE | |
9693 | ||
9694 | ELSE | |
9695 | InternalError ('expecting a DefImp symbol') | |
9696 | END | |
9697 | END | |
9698 | END PutHiddenTypeDeclared ; | |
9699 | ||
9700 | ||
9701 | (* | |
9702 | IsHiddenTypeDeclared - returns true if a Hidden Type was declared in | |
9703 | the module, Sym. | |
9704 | *) | |
9705 | ||
9706 | PROCEDURE IsHiddenTypeDeclared (Sym: CARDINAL) : BOOLEAN ; | |
9707 | VAR | |
9708 | pSym: PtrToSymbol ; | |
9709 | BEGIN | |
9710 | pSym := GetPsym(Sym) ; | |
9711 | WITH pSym^ DO | |
9712 | CASE SymbolType OF | |
9713 | ||
9714 | DefImpSym: RETURN( DefImp.ContainsHiddenType ) | |
9715 | ||
9716 | ELSE | |
9717 | InternalError ('expecting a DefImp symbol') | |
9718 | END | |
9719 | END | |
9720 | END IsHiddenTypeDeclared ; | |
9721 | ||
9722 | ||
9723 | (* | |
9724 | PutModuleContainsBuiltin - sets a flag in the current compiled module which | |
9725 | indicates that a builtin procedure is being declared. | |
9726 | This is only expected to be called when we are | |
9727 | parsing the definition module. | |
9728 | *) | |
9729 | ||
9730 | PROCEDURE PutModuleContainsBuiltin ; | |
9731 | VAR | |
9732 | pSym: PtrToSymbol ; | |
9733 | BEGIN | |
9734 | PutHiddenTypeDeclared ; | |
9735 | pSym := GetPsym(CurrentModule) ; | |
9736 | WITH pSym^ DO | |
9737 | CASE SymbolType OF | |
9738 | ||
9739 | DefImpSym: DefImp.ContainsBuiltin := TRUE | |
9740 | ||
9741 | ELSE | |
9742 | InternalError ('expecting a DefImp symbol') | |
9743 | END | |
9744 | END | |
9745 | END PutModuleContainsBuiltin ; | |
9746 | ||
9747 | ||
9748 | (* | |
9749 | IsBuiltinInModule - returns true if a module, Sym, has declared a builtin procedure. | |
9750 | *) | |
9751 | ||
9752 | PROCEDURE IsBuiltinInModule (Sym: CARDINAL) : BOOLEAN ; | |
9753 | VAR | |
9754 | pSym: PtrToSymbol ; | |
9755 | BEGIN | |
9756 | pSym := GetPsym(Sym) ; | |
9757 | WITH pSym^ DO | |
9758 | CASE SymbolType OF | |
9759 | ||
9760 | DefImpSym: RETURN( DefImp.ContainsBuiltin ) | |
9761 | ||
9762 | ELSE | |
9763 | InternalError ('expecting a DefImp symbol') | |
9764 | END | |
9765 | END | |
9766 | END IsBuiltinInModule ; | |
9767 | ||
9768 | ||
9769 | (* | |
9770 | PutDefinitionForC - sets a flag in the current compiled module which | |
9771 | indicates that this module is a wrapper for a C | |
9772 | file. Parameters passes to procedures in this module | |
9773 | will adopt the C calling convention. | |
9774 | *) | |
9775 | ||
9776 | PROCEDURE PutDefinitionForC (Sym: CARDINAL) ; | |
9777 | VAR | |
9778 | pSym: PtrToSymbol ; | |
9779 | BEGIN | |
9780 | pSym := GetPsym(Sym) ; | |
9781 | WITH pSym^ DO | |
9782 | CASE SymbolType OF | |
9783 | ||
9784 | DefImpSym: DefImp.ForC := TRUE | |
9785 | ||
9786 | ELSE | |
9787 | InternalError ('expecting a DefImp symbol') | |
9788 | END | |
9789 | END | |
9790 | END PutDefinitionForC ; | |
9791 | ||
9792 | ||
9793 | (* | |
9794 | IsDefinitionForC - returns true if this definition module was declared | |
9795 | as a DEFINITION MODULE FOR "C". | |
9796 | *) | |
9797 | ||
9798 | PROCEDURE IsDefinitionForC (Sym: CARDINAL) : BOOLEAN ; | |
9799 | VAR | |
9800 | pSym: PtrToSymbol ; | |
9801 | BEGIN | |
9802 | pSym := GetPsym(Sym) ; | |
9803 | WITH pSym^ DO | |
9804 | CASE SymbolType OF | |
9805 | ||
9806 | DefImpSym: RETURN( DefImp.ForC ) | |
9807 | ||
9808 | ELSE | |
9809 | InternalError ('expecting a DefImp symbol') | |
9810 | END | |
9811 | END | |
9812 | END IsDefinitionForC ; | |
9813 | ||
9814 | ||
9815 | (* | |
9816 | PutDoesNeedExportList - sets a flag in module, Sym, which | |
9817 | indicates that this module requires an explicit | |
9818 | EXPORT QUALIFIED or UNQUALIFIED list. PIM-2 | |
9819 | *) | |
9820 | ||
9821 | PROCEDURE PutDoesNeedExportList (Sym: CARDINAL) ; | |
9822 | VAR | |
9823 | pSym: PtrToSymbol ; | |
9824 | BEGIN | |
9825 | pSym := GetPsym(Sym) ; | |
9826 | WITH pSym^ DO | |
9827 | CASE SymbolType OF | |
9828 | ||
9829 | DefImpSym: DefImp.NeedExportList := TRUE | |
9830 | ||
9831 | ELSE | |
9832 | InternalError ('expecting a DefImp symbol') | |
9833 | END | |
9834 | END | |
9835 | END PutDoesNeedExportList ; | |
9836 | ||
9837 | ||
9838 | (* | |
9839 | PutDoesNotNeedExportList - sets a flag in module, Sym, which | |
9840 | indicates that this module does not require an explicit | |
9841 | EXPORT QUALIFIED or UNQUALIFIED list. PIM-3|4 | |
9842 | *) | |
9843 | ||
9844 | PROCEDURE PutDoesNotNeedExportList (Sym: CARDINAL) ; | |
9845 | VAR | |
9846 | pSym: PtrToSymbol ; | |
9847 | BEGIN | |
9848 | pSym := GetPsym(Sym) ; | |
9849 | WITH pSym^ DO | |
9850 | CASE SymbolType OF | |
9851 | ||
9852 | DefImpSym: DefImp.NeedExportList := FALSE | |
9853 | ||
9854 | ELSE | |
9855 | InternalError ('expecting a DefImp symbol') | |
9856 | END | |
9857 | END | |
9858 | END PutDoesNotNeedExportList ; | |
9859 | ||
9860 | ||
9861 | (* | |
9862 | DoesNotNeedExportList - returns TRUE if module, Sym, does not require an explicit | |
9863 | EXPORT QUALIFIED list. | |
9864 | *) | |
9865 | ||
9866 | PROCEDURE DoesNotNeedExportList (Sym: CARDINAL) : BOOLEAN ; | |
9867 | VAR | |
9868 | pSym: PtrToSymbol ; | |
9869 | BEGIN | |
9870 | pSym := GetPsym(Sym) ; | |
9871 | WITH pSym^ DO | |
9872 | CASE SymbolType OF | |
9873 | ||
9874 | DefImpSym: RETURN( NOT DefImp.NeedExportList ) | |
9875 | ||
9876 | ELSE | |
9877 | InternalError ('expecting a DefImp symbol') | |
9878 | END | |
9879 | END | |
9880 | END DoesNotNeedExportList ; | |
9881 | ||
9882 | ||
9883 | (* | |
9884 | CheckForEnumerationInCurrentModule - checks to see whether the enumeration | |
9885 | type symbol, Sym, has been entered into | |
9886 | the current modules scope list. | |
9887 | *) | |
9888 | ||
9889 | PROCEDURE CheckForEnumerationInCurrentModule (Sym: CARDINAL) ; | |
9890 | VAR | |
9891 | pSym : PtrToSymbol ; | |
9892 | ModSym: CARDINAL ; | |
9893 | BEGIN | |
9894 | IF (SkipType(Sym)#NulSym) AND IsEnumeration(SkipType(Sym)) | |
9895 | THEN | |
9896 | Sym := SkipType(Sym) | |
9897 | END ; | |
9898 | ||
9899 | IF IsEnumeration(Sym) | |
9900 | THEN | |
9901 | ModSym := GetCurrentModuleScope() ; | |
9902 | pSym := GetPsym(ModSym) ; | |
9903 | WITH pSym^ DO | |
9904 | CASE SymbolType OF | |
9905 | ||
9906 | DefImpSym: CheckEnumerationInList(DefImp.EnumerationScopeList, Sym) | | |
9907 | ModuleSym: CheckEnumerationInList(Module.EnumerationScopeList, Sym) | |
9908 | ||
9909 | ELSE | |
9910 | InternalError ('expecting a DefImp or Module symbol') | |
9911 | END | |
9912 | END | |
9913 | END | |
9914 | END CheckForEnumerationInCurrentModule ; | |
9915 | ||
9916 | ||
9917 | (* | |
9918 | CheckEnumerationInList - places symbol, Sym, in the list, l, | |
9919 | providing it does not already exist. | |
9920 | PseudoScope(Sym) is called if Sym needs to | |
9921 | be added to the enumeration list, l. | |
9922 | *) | |
9923 | ||
9924 | PROCEDURE CheckEnumerationInList (l: List; Sym: CARDINAL) ; | |
9925 | BEGIN | |
9926 | IF NOT IsItemInList(l, Sym) | |
9927 | THEN | |
9928 | PutItemIntoList(l, Sym) ; | |
9929 | PseudoScope(Sym) | |
9930 | END | |
9931 | END CheckEnumerationInList ; | |
9932 | ||
9933 | ||
9934 | (* | |
9935 | CheckIfEnumerationExported - An outer module may use an enumeration that | |
9936 | is declared inside an inner module. The usage | |
9937 | may occur before definition. The first pass | |
9938 | exports a symbol, later the symbol is declared | |
9939 | as an emumeration type. At this stage the | |
9940 | CheckIfEnumerationExported procedure should be | |
9941 | called. This procedure ripples from the current | |
9942 | (inner) module to outer module and every time | |
9943 | it is exported it must be added to the outer | |
9944 | module EnumerationScopeList. | |
9945 | *) | |
9946 | ||
9947 | PROCEDURE CheckIfEnumerationExported (Sym: CARDINAL; ScopeId: CARDINAL) ; | |
9948 | VAR | |
9949 | pCall : PtrToCallFrame ; | |
9950 | InnerModId, | |
9951 | OuterModId : CARDINAL ; | |
9952 | InnerModSym, | |
9953 | OuterModSym: CARDINAL ; | |
9954 | BEGIN | |
9955 | InnerModId := GetModuleScopeId(ScopeId) ; | |
9956 | IF InnerModId>0 | |
9957 | THEN | |
9958 | OuterModId := GetModuleScopeId(InnerModId-1) ; | |
9959 | IF OuterModId>0 | |
9960 | THEN | |
9961 | pCall := GetPcall(InnerModId) ; | |
9962 | InnerModSym := pCall^.Search ; | |
9963 | pCall := GetPcall(OuterModId) ; | |
9964 | OuterModSym := pCall^.Search ; | |
9965 | IF (InnerModSym#NulSym) AND (OuterModSym#NulSym) | |
9966 | THEN | |
9967 | IF IsExported(InnerModSym, Sym) | |
9968 | THEN | |
9969 | CheckForEnumerationInOuterModule(Sym, OuterModSym) ; | |
9970 | CheckIfEnumerationExported(Sym, OuterModId) | |
9971 | END | |
9972 | END | |
9973 | END | |
9974 | END | |
9975 | END CheckIfEnumerationExported ; | |
9976 | ||
9977 | ||
9978 | (* | |
9979 | CheckForEnumerationInOuterModule - checks to see whether the enumeration | |
9980 | type symbol, Sym, has been entered into | |
9981 | the outer module, OuterModule, scope list. | |
9982 | OuterModule may be internal to the | |
9983 | program module. | |
9984 | *) | |
9985 | ||
9986 | PROCEDURE CheckForEnumerationInOuterModule (Sym: CARDINAL; | |
9987 | OuterModule: CARDINAL) ; | |
9988 | VAR | |
9989 | pSym: PtrToSymbol ; | |
9990 | BEGIN | |
9991 | pSym := GetPsym(OuterModule) ; | |
9992 | WITH pSym^ DO | |
9993 | CASE SymbolType OF | |
9994 | ||
9995 | DefImpSym: IncludeItemIntoList(DefImp.EnumerationScopeList, Sym) | | |
9996 | ModuleSym: IncludeItemIntoList(Module.EnumerationScopeList, Sym) | |
9997 | ||
9998 | ELSE | |
9999 | InternalError ('expecting a DefImp or Module symbol') | |
10000 | END | |
10001 | END | |
10002 | END CheckForEnumerationInOuterModule ; | |
10003 | ||
10004 | ||
10005 | (* | |
10006 | IsExported - returns true if a symbol, Sym, is exported | |
10007 | from module, ModSym. | |
10008 | If ModSym is a DefImp symbol then its | |
10009 | ExportQualified and ExportUnQualified lists are examined. | |
10010 | *) | |
10011 | ||
10012 | PROCEDURE IsExported (ModSym: CARDINAL; Sym: CARDINAL) : BOOLEAN ; | |
10013 | VAR | |
10014 | pSym : PtrToSymbol ; | |
10015 | SymName: Name ; | |
10016 | BEGIN | |
10017 | SymName := GetSymName(Sym) ; | |
10018 | pSym := GetPsym(ModSym) ; | |
10019 | WITH pSym^ DO | |
10020 | CASE SymbolType OF | |
10021 | ||
10022 | DefImpSym: WITH DefImp DO | |
10023 | RETURN( | |
10024 | (GetSymKey(ExportQualifiedTree, SymName)=Sym) OR | |
10025 | (GetSymKey(ExportUnQualifiedTree, SymName)=Sym) | |
10026 | ) | |
10027 | END | | |
10028 | ModuleSym: WITH Module DO | |
10029 | RETURN( GetSymKey(ExportTree, SymName)=Sym ) | |
10030 | END | |
10031 | ||
10032 | ELSE | |
10033 | InternalError ('expecting a DefImp or Module symbol') | |
10034 | END | |
10035 | END | |
10036 | END IsExported ; | |
10037 | ||
10038 | ||
10039 | (* | |
10040 | IsImported - returns true if a symbol, Sym, in module, ModSym, | |
10041 | was imported. | |
10042 | *) | |
10043 | ||
10044 | PROCEDURE IsImported (ModSym: CARDINAL; Sym: CARDINAL) : BOOLEAN ; | |
10045 | VAR | |
10046 | pSym : PtrToSymbol ; | |
10047 | SymName: Name ; | |
10048 | BEGIN | |
10049 | SymName := GetSymName(Sym) ; | |
10050 | pSym := GetPsym(ModSym) ; | |
10051 | WITH pSym^ DO | |
10052 | CASE SymbolType OF | |
10053 | ||
10054 | DefImpSym: WITH DefImp DO | |
10055 | RETURN( | |
10056 | (GetSymKey(ImportTree, SymName)=Sym) OR | |
10057 | IsItemInList(IncludeList, Sym) | |
10058 | ) | |
10059 | END | | |
10060 | ModuleSym: WITH Module DO | |
10061 | RETURN( | |
10062 | (GetSymKey(ImportTree, SymName)=Sym) OR | |
10063 | IsItemInList(IncludeList, Sym) | |
10064 | ) | |
10065 | END | |
10066 | ||
10067 | ELSE | |
10068 | InternalError ('expecting a DefImp or Module symbol') | |
10069 | END | |
10070 | END | |
10071 | END IsImported ; | |
10072 | ||
10073 | ||
10074 | (* | |
10075 | IsType - returns true if the Sym is a type symbol. | |
10076 | *) | |
10077 | ||
10078 | PROCEDURE IsType (Sym: CARDINAL) : BOOLEAN ; | |
10079 | VAR | |
10080 | pSym: PtrToSymbol ; | |
10081 | BEGIN | |
10082 | pSym := GetPsym(Sym) ; | |
10083 | RETURN( pSym^.SymbolType=TypeSym ) | |
10084 | END IsType ; | |
10085 | ||
10086 | ||
10087 | (* | |
10088 | IsReturnOptional - returns TRUE if the return value for, sym, is | |
10089 | optional. | |
10090 | *) | |
10091 | ||
10092 | PROCEDURE IsReturnOptional (sym: CARDINAL) : BOOLEAN ; | |
10093 | VAR | |
10094 | pSym: PtrToSymbol ; | |
10095 | BEGIN | |
10096 | pSym := GetPsym(sym) ; | |
10097 | WITH pSym^ DO | |
10098 | CASE SymbolType OF | |
10099 | ||
10100 | ProcedureSym: RETURN( Procedure.ReturnOptional ) | | |
10101 | ProcTypeSym : RETURN( ProcType.ReturnOptional ) | |
10102 | ||
10103 | ELSE | |
10104 | InternalError ('expecting a Procedure or ProcType symbol') | |
10105 | END | |
10106 | END | |
10107 | END IsReturnOptional ; | |
10108 | ||
10109 | ||
10110 | (* | |
10111 | SetReturnOptional - sets the ReturnOptional field in the Procedure or | |
10112 | ProcType symboltable entry. | |
10113 | *) | |
10114 | ||
10115 | PROCEDURE SetReturnOptional (sym: CARDINAL; isopt: BOOLEAN) ; | |
10116 | VAR | |
10117 | pSym: PtrToSymbol ; | |
10118 | BEGIN | |
10119 | pSym := GetPsym(sym) ; | |
10120 | WITH pSym^ DO | |
10121 | CASE SymbolType OF | |
10122 | ||
10123 | ProcedureSym: Procedure.ReturnOptional := isopt | | |
10124 | ProcTypeSym : ProcType.ReturnOptional := isopt | |
10125 | ||
10126 | ELSE | |
10127 | InternalError ('expecting a Procedure or ProcType symbol') | |
10128 | END | |
10129 | END | |
10130 | END SetReturnOptional ; | |
10131 | ||
10132 | ||
10133 | (* | |
10134 | CheckOptFunction - checks to see whether the optional return value | |
10135 | has been set before and if it differs it will | |
10136 | generate an error message. It will set the | |
10137 | new value to, isopt. | |
10138 | *) | |
10139 | ||
10140 | PROCEDURE CheckOptFunction (sym: CARDINAL; isopt: BOOLEAN) ; | |
10141 | VAR | |
10142 | n: Name ; | |
10143 | e: Error ; | |
10144 | BEGIN | |
10145 | IF GetType(sym)#NulSym | |
10146 | THEN | |
10147 | IF IsReturnOptional(sym) AND (NOT isopt) | |
10148 | THEN | |
10149 | n := GetSymName(sym) ; | |
10150 | e := NewError(GetTokenNo()) ; | |
10151 | ErrorFormat1(e, 'function (%a) has no optional return value here', n) ; | |
10152 | e := ChainError(GetDeclaredMod(sym), e) ; | |
10153 | ErrorFormat1(e, 'whereas the same function (%a) was declared to have an optional return value at this point', n) | |
10154 | ELSIF (NOT IsReturnOptional(sym)) AND isopt | |
10155 | THEN | |
10156 | n := GetSymName(sym) ; | |
10157 | e := NewError(GetTokenNo()) ; | |
10158 | ErrorFormat1(e, 'function (%a) has an optional return value', n) ; | |
10159 | e := ChainError(GetDeclaredMod(sym), e) ; | |
10160 | ErrorFormat1(e, 'whereas the same function (%a) was declared to have no optional return value at this point', n) | |
10161 | END | |
10162 | END ; | |
10163 | SetReturnOptional(sym, isopt) | |
10164 | END CheckOptFunction ; | |
10165 | ||
10166 | ||
10167 | (* | |
10168 | PutFunction - Places a TypeSym as the return type to a procedure Sym. | |
10169 | *) | |
10170 | ||
10171 | PROCEDURE PutFunction (Sym: CARDINAL; TypeSym: CARDINAL) ; | |
10172 | VAR | |
10173 | pSym: PtrToSymbol ; | |
10174 | BEGIN | |
10175 | pSym := GetPsym(Sym) ; | |
10176 | WITH pSym^ DO | |
10177 | CASE SymbolType OF | |
10178 | ||
10179 | ErrorSym: | | |
10180 | ProcedureSym: CheckOptFunction(Sym, FALSE) ; Procedure.ReturnType := TypeSym | | |
10181 | ProcTypeSym : CheckOptFunction(Sym, FALSE) ; ProcType.ReturnType := TypeSym | |
10182 | ||
10183 | ELSE | |
10184 | InternalError ('expecting a Procedure or ProcType symbol') | |
10185 | END | |
10186 | END | |
10187 | END PutFunction ; | |
10188 | ||
10189 | ||
10190 | (* | |
10191 | PutOptFunction - places a TypeSym as the optional return type to a procedure Sym. | |
10192 | *) | |
10193 | ||
10194 | PROCEDURE PutOptFunction (Sym: CARDINAL; TypeSym: CARDINAL) ; | |
10195 | VAR | |
10196 | pSym: PtrToSymbol ; | |
10197 | BEGIN | |
10198 | pSym := GetPsym(Sym) ; | |
10199 | WITH pSym^ DO | |
10200 | CASE SymbolType OF | |
10201 | ||
10202 | ErrorSym: | | |
10203 | ProcedureSym: CheckOptFunction(Sym, TRUE) ; Procedure.ReturnType := TypeSym | | |
10204 | ProcTypeSym : CheckOptFunction(Sym, TRUE) ; ProcType.ReturnType := TypeSym | |
10205 | ||
10206 | ELSE | |
10207 | InternalError ('expecting a Procedure or ProcType symbol') | |
10208 | END | |
10209 | END | |
10210 | END PutOptFunction ; | |
10211 | ||
10212 | ||
10213 | (* | |
10214 | MakeVariableForParam - | |
10215 | *) | |
10216 | ||
10217 | PROCEDURE MakeVariableForParam (tok : CARDINAL; | |
10218 | ParamName: Name; | |
10219 | ProcSym : CARDINAL ; | |
10220 | no : CARDINAL) : CARDINAL ; | |
10221 | VAR | |
10222 | pSym : PtrToSymbol ; | |
10223 | VariableSym: CARDINAL ; | |
10224 | BEGIN | |
b80e3c46 GM |
10225 | VariableSym := MakeVar (tok, ParamName) ; |
10226 | pSym := GetPsym (VariableSym) ; | |
1eee94d3 GM |
10227 | WITH pSym^ DO |
10228 | CASE SymbolType OF | |
10229 | ||
10230 | ErrorSym: RETURN( NulSym ) | | |
b80e3c46 | 10231 | VarSym : Var.IsParam := TRUE (* Variable is really a parameter. *) |
1eee94d3 GM |
10232 | |
10233 | ELSE | |
10234 | InternalError ('expecting a Var symbol') | |
10235 | END | |
10236 | END ; | |
b80e3c46 GM |
10237 | (* Note that the parameter is now treated as a local variable. *) |
10238 | PutVar (VariableSym, GetType(GetNthParam(ProcSym, no))) ; | |
10239 | PutDeclared (tok, VariableSym) ; | |
1eee94d3 GM |
10240 | (* |
10241 | Normal VAR parameters have LeftValue, | |
10242 | however Unbounded VAR parameters have RightValue. | |
10243 | Non VAR parameters always have RightValue. | |
10244 | *) | |
b80e3c46 | 10245 | IF IsVarParam (ProcSym, no) AND (NOT IsUnboundedParam (ProcSym, no)) |
1eee94d3 | 10246 | THEN |
b80e3c46 | 10247 | PutMode (VariableSym, LeftValue) |
1eee94d3 | 10248 | ELSE |
b80e3c46 | 10249 | PutMode (VariableSym, RightValue) |
1eee94d3 GM |
10250 | END ; |
10251 | RETURN( VariableSym ) | |
10252 | END MakeVariableForParam ; | |
10253 | ||
10254 | ||
10255 | (* | |
10256 | PutParam - Places a Non VAR parameter ParamName with type ParamType into | |
10257 | procedure Sym. The parameter number is ParamNo. | |
10258 | If the procedure Sym already has this parameter then | |
10259 | the parameter is checked for consistancy and the | |
10260 | consistancy test is returned. | |
10261 | *) | |
10262 | ||
10263 | PROCEDURE PutParam (tok: CARDINAL; Sym: CARDINAL; ParamNo: CARDINAL; | |
10264 | ParamName: Name; ParamType: CARDINAL; | |
10265 | isUnbounded: BOOLEAN) : BOOLEAN ; | |
10266 | VAR | |
10267 | pSym : PtrToSymbol ; | |
10268 | ParSym : CARDINAL ; | |
10269 | VariableSym: CARDINAL ; | |
10270 | BEGIN | |
10271 | IF ParamNo<=NoOfParam(Sym) | |
10272 | THEN | |
10273 | InternalError ('why are we trying to put parameters again') | |
10274 | ELSE | |
10275 | (* Add a new parameter *) | |
10276 | NewSym(ParSym) ; | |
10277 | pSym := GetPsym(ParSym) ; | |
10278 | WITH pSym^ DO | |
10279 | SymbolType := ParamSym ; | |
10280 | WITH Param DO | |
10281 | name := ParamName ; | |
10282 | Type := ParamType ; | |
10283 | IsUnbounded := isUnbounded ; | |
10284 | ShadowVar := NulSym ; | |
10285 | InitWhereDeclaredTok(tok, At) | |
10286 | END | |
10287 | END ; | |
10288 | AddParameter(Sym, ParSym) ; | |
10289 | IF ParamName#NulName | |
10290 | THEN | |
10291 | VariableSym := MakeVariableForParam(tok, ParamName, Sym, ParamNo) ; | |
10292 | IF VariableSym=NulSym | |
10293 | THEN | |
10294 | RETURN( FALSE ) | |
10295 | ELSE | |
10296 | pSym := GetPsym(ParSym) ; | |
10297 | pSym^.Param.ShadowVar := VariableSym | |
10298 | END | |
10299 | END | |
10300 | END ; | |
10301 | RETURN( TRUE ) | |
10302 | END PutParam ; | |
10303 | ||
10304 | ||
10305 | (* | |
10306 | PutVarParam - Places a Non VAR parameter ParamName with type | |
10307 | ParamType into procedure Sym. | |
10308 | The parameter number is ParamNo. | |
10309 | If the procedure Sym already has this parameter then | |
10310 | the parameter is checked for consistancy and the | |
10311 | consistancy test is returned. | |
10312 | *) | |
10313 | ||
10314 | PROCEDURE PutVarParam (tok: CARDINAL; Sym: CARDINAL; ParamNo: CARDINAL; | |
10315 | ParamName: Name; ParamType: CARDINAL; | |
10316 | isUnbounded: BOOLEAN) : BOOLEAN ; | |
10317 | VAR | |
10318 | pSym : PtrToSymbol ; | |
10319 | ParSym : CARDINAL ; | |
10320 | VariableSym: CARDINAL ; | |
10321 | BEGIN | |
10322 | IF ParamNo<=NoOfParam(Sym) | |
10323 | THEN | |
10324 | InternalError ('why are we trying to put parameters again') | |
10325 | ELSE | |
10326 | (* Add a new parameter *) | |
10327 | NewSym(ParSym) ; | |
10328 | pSym := GetPsym(ParSym) ; | |
10329 | WITH pSym^ DO | |
10330 | SymbolType := VarParamSym ; | |
10331 | WITH VarParam DO | |
10332 | name := ParamName ; | |
10333 | Type := ParamType ; | |
10334 | IsUnbounded := isUnbounded ; | |
10335 | ShadowVar := NulSym ; | |
083e7857 | 10336 | HeapVar := NulSym ; (* Will contain a pointer value. *) |
1eee94d3 GM |
10337 | InitWhereDeclaredTok(tok, At) |
10338 | END | |
10339 | END ; | |
10340 | AddParameter(Sym, ParSym) ; | |
10341 | IF ParamName#NulName | |
10342 | THEN | |
10343 | VariableSym := MakeVariableForParam(tok, ParamName, Sym, ParamNo) ; | |
10344 | IF VariableSym=NulSym | |
10345 | THEN | |
10346 | RETURN( FALSE ) | |
10347 | ELSE | |
10348 | pSym := GetPsym(ParSym) ; | |
10349 | pSym^.VarParam.ShadowVar := VariableSym | |
10350 | END | |
10351 | END ; | |
10352 | RETURN( TRUE ) | |
10353 | END | |
10354 | END PutVarParam ; | |
10355 | ||
10356 | ||
10357 | (* | |
10358 | PutParamName - assigns a name, name, to paramater, no, of procedure, | |
10359 | ProcSym. | |
10360 | *) | |
10361 | ||
10362 | PROCEDURE PutParamName (tok: CARDINAL; ProcSym: CARDINAL; no: CARDINAL; name: Name) ; | |
10363 | VAR | |
10364 | pSym : PtrToSymbol ; | |
10365 | ParSym: CARDINAL ; | |
10366 | BEGIN | |
10367 | pSym := GetPsym(ProcSym) ; | |
10368 | ParSym := NulSym ; | |
10369 | WITH pSym^ DO | |
10370 | CASE SymbolType OF | |
10371 | ||
10372 | ErrorSym : RETURN | | |
10373 | ProcedureSym: ParSym := GetItemFromList(Procedure.ListOfParam, no) | | |
10374 | ProcTypeSym : ParSym := GetItemFromList(ProcType.ListOfParam, no) | |
10375 | ||
10376 | ELSE | |
10377 | InternalError ('expecting a Procedure symbol') | |
10378 | END | |
10379 | END ; | |
10380 | pSym := GetPsym(ParSym) ; | |
10381 | WITH pSym^ DO | |
10382 | CASE SymbolType OF | |
10383 | ||
10384 | ParamSym: IF Param.name=NulName | |
10385 | THEN | |
10386 | Param.name := name ; | |
10387 | Param.ShadowVar := MakeVariableForParam(tok, name, ProcSym, no) | |
10388 | ELSE | |
10389 | InternalError ('name of parameter has already been assigned') | |
10390 | END | | |
10391 | VarParamSym: IF VarParam.name=NulName | |
10392 | THEN | |
10393 | VarParam.name := name ; | |
10394 | VarParam.ShadowVar := MakeVariableForParam(tok, name, ProcSym, no) | |
10395 | ELSE | |
10396 | InternalError ('name of parameter has already been assigned') | |
10397 | END | |
10398 | ||
10399 | ELSE | |
10400 | InternalError ('expecting a VarParam or Param symbol') | |
10401 | END | |
10402 | END | |
10403 | END PutParamName ; | |
10404 | ||
10405 | ||
10406 | (* | |
10407 | AddParameter - adds a parameter ParSym to a procedure Sym. | |
10408 | *) | |
10409 | ||
10410 | PROCEDURE AddParameter (Sym: CARDINAL; ParSym: CARDINAL) ; | |
10411 | VAR | |
10412 | pSym: PtrToSymbol ; | |
10413 | BEGIN | |
10414 | pSym := GetPsym(Sym) ; | |
10415 | WITH pSym^ DO | |
10416 | CASE SymbolType OF | |
10417 | ||
10418 | ErrorSym: | | |
10419 | ProcedureSym: PutItemIntoList(Procedure.ListOfParam, ParSym) | | |
10420 | ProcTypeSym : PutItemIntoList(ProcType.ListOfParam, ParSym) | |
10421 | ||
10422 | ELSE | |
10423 | InternalError ('expecting a Procedure symbol') | |
10424 | END | |
10425 | END | |
10426 | END AddParameter ; | |
10427 | ||
10428 | ||
10429 | (* | |
10430 | IsVarParam - Returns a conditional depending whether parameter ParamNo | |
10431 | is a VAR parameter. | |
10432 | *) | |
10433 | ||
10434 | PROCEDURE IsVarParam (Sym: CARDINAL; ParamNo: CARDINAL) : BOOLEAN ; | |
10435 | VAR | |
10436 | pSym : PtrToSymbol ; | |
10437 | IsVar: BOOLEAN ; | |
10438 | BEGIN | |
10439 | IsVar := FALSE ; | |
10440 | pSym := GetPsym(Sym) ; | |
10441 | WITH pSym^ DO | |
10442 | CASE SymbolType OF | |
10443 | ||
10444 | ErrorSym : | | |
10445 | ProcedureSym: IsVar := IsNthParamVar(Procedure.ListOfParam, ParamNo) | | |
10446 | ProcTypeSym : IsVar := IsNthParamVar(ProcType.ListOfParam, ParamNo) | |
10447 | ||
10448 | ELSE | |
10449 | InternalError ('expecting a Procedure or ProcType symbol') | |
10450 | END | |
10451 | END ; | |
10452 | RETURN( IsVar ) | |
10453 | END IsVarParam ; | |
10454 | ||
10455 | ||
10456 | (* | |
10457 | IsNthParamVar - returns true if the n th parameter of the parameter list, | |
10458 | List, is a VAR parameter. | |
10459 | *) | |
10460 | ||
10461 | PROCEDURE IsNthParamVar (Head: List; n: CARDINAL) : BOOLEAN ; | |
10462 | VAR | |
10463 | pSym: PtrToSymbol ; | |
10464 | p : CARDINAL ; | |
10465 | BEGIN | |
10466 | p := GetItemFromList(Head, n) ; | |
10467 | IF p=NulSym | |
10468 | THEN | |
10469 | InternalError ('parameter does not exist') | |
10470 | ELSE | |
10471 | pSym := GetPsym(p) ; | |
10472 | WITH pSym^ DO | |
10473 | CASE SymbolType OF | |
10474 | ||
10475 | ErrorSym : RETURN( FALSE ) | | |
10476 | VarParamSym: RETURN( TRUE ) | | |
10477 | ParamSym : RETURN( FALSE ) | |
10478 | ||
10479 | ELSE | |
10480 | InternalError ('expecting Param or VarParam symbol') | |
10481 | END | |
10482 | END | |
10483 | END | |
10484 | END IsNthParamVar ; | |
10485 | ||
10486 | ||
10487 | (* | |
10488 | NoOfParam - Returns the number of parameters that procedure Sym contains. | |
10489 | *) | |
10490 | ||
10491 | PROCEDURE NoOfParam (Sym: CARDINAL) : CARDINAL ; | |
10492 | VAR | |
10493 | pSym: PtrToSymbol ; | |
10494 | n : CARDINAL ; | |
10495 | BEGIN | |
10496 | CheckLegal(Sym) ; | |
10497 | pSym := GetPsym(Sym) ; | |
10498 | WITH pSym^ DO | |
10499 | CASE SymbolType OF | |
10500 | ||
10501 | ErrorSym : n := 0 | | |
10502 | ProcedureSym: n := NoOfItemsInList(Procedure.ListOfParam) | | |
10503 | ProcTypeSym : n := NoOfItemsInList(ProcType.ListOfParam) | |
10504 | ||
10505 | ELSE | |
10506 | InternalError ('expecting a Procedure or ProcType symbol') | |
10507 | END | |
10508 | END ; | |
10509 | RETURN( n ) | |
10510 | END NoOfParam ; | |
10511 | ||
10512 | ||
10513 | (* | |
10514 | HasVarParameters - returns TRUE if procedure, p, has any VAR parameters. | |
10515 | *) | |
10516 | ||
10517 | PROCEDURE HasVarParameters (p: CARDINAL) : BOOLEAN ; | |
10518 | VAR | |
10519 | i, n: CARDINAL ; | |
10520 | BEGIN | |
10521 | n := NoOfParam(p) ; | |
10522 | i := 1 ; | |
10523 | WHILE i<=n DO | |
10524 | IF IsVarParam(p, i) | |
10525 | THEN | |
10526 | RETURN TRUE | |
10527 | END ; | |
10528 | INC(i) | |
10529 | END ; | |
10530 | RETURN FALSE | |
10531 | END HasVarParameters ; | |
10532 | ||
10533 | ||
10534 | (* | |
10535 | PutUseVarArgs - tell the symbol table that this procedure, Sym, | |
10536 | uses varargs. | |
10537 | The procedure _must_ be declared inside a | |
10538 | DEFINITION FOR "C" | |
10539 | ||
10540 | *) | |
10541 | ||
10542 | PROCEDURE PutUseVarArgs (Sym: CARDINAL) ; | |
10543 | VAR | |
10544 | pSym: PtrToSymbol ; | |
10545 | BEGIN | |
10546 | CheckLegal(Sym) ; | |
10547 | pSym := GetPsym(Sym) ; | |
10548 | WITH pSym^ DO | |
10549 | CASE SymbolType OF | |
10550 | ||
10551 | ErrorSym: | | |
10552 | ProcedureSym: Procedure.HasVarArgs := TRUE | | |
10553 | ProcTypeSym : ProcType.HasVarArgs := TRUE | |
10554 | ||
10555 | ELSE | |
10556 | InternalError ('expecting a Procedure or ProcType symbol') | |
10557 | END | |
10558 | END | |
10559 | END PutUseVarArgs ; | |
10560 | ||
10561 | ||
10562 | (* | |
10563 | UsesVarArgs - returns TRUE if procedure, Sym, uses varargs. | |
10564 | The procedure _must_ be declared inside a | |
10565 | DEFINITION FOR "C" | |
10566 | *) | |
10567 | ||
10568 | PROCEDURE UsesVarArgs (Sym: CARDINAL) : BOOLEAN ; | |
10569 | VAR | |
10570 | pSym: PtrToSymbol ; | |
10571 | BEGIN | |
10572 | CheckLegal(Sym) ; | |
10573 | pSym := GetPsym(Sym) ; | |
10574 | WITH pSym^ DO | |
10575 | CASE SymbolType OF | |
10576 | ||
10577 | ErrorSym : RETURN( FALSE ) | | |
10578 | ProcedureSym: RETURN( Procedure.HasVarArgs ) | | |
10579 | ProcTypeSym : RETURN( ProcType.HasVarArgs ) | |
10580 | ||
10581 | ELSE | |
10582 | InternalError ('expecting a Procedure or ProcType symbol') | |
10583 | END | |
10584 | END | |
10585 | END UsesVarArgs ; | |
10586 | ||
10587 | ||
10588 | (* | |
10589 | PutUseOptArg - tell the symbol table that this procedure, Sym, | |
10590 | uses an optarg. | |
10591 | *) | |
10592 | ||
10593 | PROCEDURE PutUseOptArg (Sym: CARDINAL) ; | |
10594 | VAR | |
10595 | pSym: PtrToSymbol ; | |
10596 | BEGIN | |
10597 | CheckLegal(Sym) ; | |
10598 | pSym := GetPsym(Sym) ; | |
10599 | WITH pSym^ DO | |
10600 | CASE SymbolType OF | |
10601 | ||
10602 | ErrorSym: | | |
10603 | ProcedureSym: Procedure.HasOptArg := TRUE | | |
10604 | ProcTypeSym : ProcType.HasOptArg := TRUE | |
10605 | ||
10606 | ELSE | |
10607 | InternalError ('expecting a Procedure or ProcType symbol') | |
10608 | END | |
10609 | END | |
10610 | END PutUseOptArg ; | |
10611 | ||
10612 | ||
10613 | (* | |
10614 | UsesOptArg - returns TRUE if procedure, Sym, uses varargs. | |
10615 | *) | |
10616 | ||
10617 | PROCEDURE UsesOptArg (Sym: CARDINAL) : BOOLEAN ; | |
10618 | VAR | |
10619 | pSym: PtrToSymbol ; | |
10620 | BEGIN | |
10621 | CheckLegal(Sym) ; | |
10622 | pSym := GetPsym(Sym) ; | |
10623 | WITH pSym^ DO | |
10624 | CASE SymbolType OF | |
10625 | ||
10626 | ErrorSym : RETURN( FALSE ) | | |
10627 | ProcedureSym: RETURN( Procedure.HasOptArg ) | | |
10628 | ProcTypeSym : RETURN( ProcType.HasOptArg ) | |
10629 | ||
10630 | ELSE | |
10631 | InternalError ('expecting a Procedure or ProcType symbol') | |
10632 | END | |
10633 | END | |
10634 | END UsesOptArg ; | |
10635 | ||
10636 | ||
10637 | (* | |
10638 | PutOptArgInit - makes symbol, Sym, the initializer value to | |
10639 | procedure, ProcSym. | |
10640 | *) | |
10641 | ||
10642 | PROCEDURE PutOptArgInit (ProcSym, Sym: CARDINAL) ; | |
10643 | VAR | |
10644 | pSym: PtrToSymbol ; | |
10645 | BEGIN | |
10646 | CheckLegal(Sym) ; | |
10647 | IF NOT IsError(ProcSym) | |
10648 | THEN | |
10649 | IF UsesOptArg(ProcSym) | |
10650 | THEN | |
10651 | pSym := GetPsym(ProcSym) ; | |
10652 | WITH pSym^ DO | |
10653 | CASE SymbolType OF | |
10654 | ||
10655 | ErrorSym : | | |
10656 | ProcedureSym: Procedure.OptArgInit := Sym | | |
10657 | ProcTypeSym : ProcType.OptArgInit := Sym | |
10658 | ||
10659 | ELSE | |
10660 | InternalError ('expecting a Procedure or ProcType symbol') | |
10661 | END | |
10662 | END | |
10663 | END | |
10664 | END | |
10665 | END PutOptArgInit ; | |
10666 | ||
10667 | ||
10668 | (* | |
10669 | GetOptArgInit - returns the initializer value to the optional parameter in | |
10670 | procedure, ProcSym. | |
10671 | *) | |
10672 | ||
10673 | PROCEDURE GetOptArgInit (ProcSym: CARDINAL) : CARDINAL ; | |
10674 | VAR | |
10675 | pSym: PtrToSymbol ; | |
10676 | BEGIN | |
10677 | IF NOT IsError(ProcSym) | |
10678 | THEN | |
10679 | IF UsesOptArg(ProcSym) | |
10680 | THEN | |
10681 | pSym := GetPsym(ProcSym) ; | |
10682 | WITH pSym^ DO | |
10683 | CASE SymbolType OF | |
10684 | ||
10685 | ErrorSym : | | |
10686 | ProcedureSym: RETURN( Procedure.OptArgInit ) | | |
10687 | ProcTypeSym : RETURN( ProcType.OptArgInit ) | |
10688 | ||
10689 | ELSE | |
10690 | InternalError ('expecting a Procedure or ProcType symbol') | |
10691 | END | |
10692 | END | |
10693 | END | |
10694 | END ; | |
10695 | RETURN( NulSym ) | |
10696 | END GetOptArgInit ; | |
10697 | ||
10698 | ||
083e7857 GM |
10699 | (* |
10700 | MakeParameterHeapVar - create a heap variable if sym is a pointer. | |
10701 | *) | |
10702 | ||
10703 | PROCEDURE MakeParameterHeapVar (tok: CARDINAL; type: CARDINAL; mode: ModeOfAddr) : CARDINAL ; | |
10704 | VAR | |
10705 | heapvar: CARDINAL ; | |
10706 | BEGIN | |
10707 | heapvar := NulSym ; | |
10708 | type := SkipType (type) ; | |
10709 | IF IsPointer (type) | |
10710 | THEN | |
10711 | heapvar := MakeTemporary (tok, mode) ; | |
10712 | PutVar (heapvar, type) ; | |
10713 | PutVarHeap (heapvar, TRUE) | |
10714 | END ; | |
10715 | RETURN heapvar | |
10716 | END MakeParameterHeapVar ; | |
10717 | ||
10718 | ||
10719 | (* | |
10720 | GetParameterHeapVar - return the heap variable associated with the | |
10721 | parameter or NulSym. | |
10722 | *) | |
10723 | ||
10724 | PROCEDURE GetParameterHeapVar (ParSym: CARDINAL) : CARDINAL ; | |
10725 | VAR | |
10726 | pSym: PtrToSymbol ; | |
10727 | BEGIN | |
10728 | pSym := GetPsym (ParSym) ; | |
10729 | WITH pSym^ DO | |
10730 | CASE SymbolType OF | |
10731 | ||
10732 | ParamSym : RETURN NulSym | (* Only VarParam has the pointer. *) | |
10733 | VarParamSym: RETURN VarParam.HeapVar | |
10734 | ||
10735 | ELSE | |
10736 | InternalError ('expecting Param or VarParam symbol') | |
10737 | END | |
10738 | END | |
10739 | END GetParameterHeapVar ; | |
10740 | ||
10741 | ||
10742 | (* | |
10743 | PutParameterHeapVar - creates a heap variable associated with parameter sym. | |
10744 | *) | |
10745 | ||
10746 | PROCEDURE PutParameterHeapVar (sym: CARDINAL) ; | |
10747 | VAR | |
10748 | pSym : PtrToSymbol ; | |
10749 | BEGIN | |
10750 | pSym := GetPsym (sym) ; | |
10751 | WITH pSym^ DO | |
10752 | CASE SymbolType OF | |
10753 | ||
10754 | ParamSym : | (* Nothing to do for the non var parameter. *) | |
10755 | VarParamSym: VarParam.HeapVar := MakeParameterHeapVar (GetDeclaredMod (sym), | |
10756 | VarParam.Type, LeftValue) | |
10757 | ||
10758 | ELSE | |
10759 | InternalError ('Param or VarParam symbol expected') | |
10760 | END | |
10761 | END | |
10762 | END PutParameterHeapVar ; | |
10763 | ||
10764 | ||
10765 | (* | |
10766 | PutProcedureParameterHeapVars - creates heap variables for parameter sym. | |
10767 | *) | |
10768 | ||
10769 | PROCEDURE PutProcedureParameterHeapVars (sym: CARDINAL) ; | |
10770 | BEGIN | |
10771 | Assert (IsProcedure (sym)) ; | |
10772 | ForeachParamSymDo (sym, PutParameterHeapVar) | |
10773 | END PutProcedureParameterHeapVars ; | |
10774 | ||
10775 | ||
1eee94d3 GM |
10776 | (* |
10777 | NoOfVariables - returns the number of variables in scope. The scope maybe | |
10778 | a procedure, module or defimp scope. | |
10779 | *) | |
10780 | ||
10781 | PROCEDURE NoOfVariables (scope: CARDINAL) : CARDINAL ; | |
10782 | VAR | |
10783 | pSym: PtrToSymbol ; | |
10784 | BEGIN | |
10785 | IF IsProcedure (scope) | |
10786 | THEN | |
10787 | RETURN NoOfLocalVar (scope) | |
10788 | ELSIF IsModule (scope) | |
10789 | THEN | |
10790 | pSym := GetPsym (scope) ; | |
10791 | WITH pSym^ DO | |
10792 | CASE SymbolType OF | |
10793 | ||
10794 | ModuleSym: RETURN NoOfItemsInList (Module.ListOfVars) | |
10795 | ||
10796 | ELSE | |
10797 | InternalError ('expecting module symbol') | |
10798 | END | |
10799 | END | |
10800 | ELSIF IsDefImp (scope) | |
10801 | THEN | |
10802 | pSym := GetPsym (scope) ; | |
10803 | WITH pSym^ DO | |
10804 | CASE SymbolType OF | |
10805 | ||
10806 | DefImpSym: RETURN NoOfItemsInList (DefImp.ListOfVars) | |
10807 | ||
10808 | ELSE | |
10809 | InternalError ('expecting defimp symbol') | |
10810 | END | |
10811 | END | |
10812 | ELSE | |
10813 | InternalError ('expecting procedure, module or defimp symbol') | |
10814 | END | |
10815 | END NoOfVariables ; | |
10816 | ||
10817 | ||
10818 | (* | |
10819 | NoOfLocalVar - returns the number of local variables that exist in | |
10820 | procedure Sym. Parameters are NOT included in the | |
10821 | count. | |
10822 | *) | |
10823 | ||
10824 | PROCEDURE NoOfLocalVar (Sym: CARDINAL) : CARDINAL ; | |
10825 | VAR | |
10826 | pSym: PtrToSymbol ; | |
10827 | n : CARDINAL ; | |
10828 | BEGIN | |
10829 | pSym := GetPsym(Sym) ; | |
10830 | WITH pSym^ DO | |
10831 | CASE SymbolType OF | |
10832 | ||
10833 | ErrorSym : n := 0 | | |
10834 | ProcedureSym: n := NoOfItemsInList(Procedure.ListOfVars) | |
10835 | ||
10836 | ELSE | |
10837 | InternalError ('expecting a Procedure symbol') | |
10838 | END | |
10839 | END ; | |
10840 | (* | |
10841 | Parameters are actually included in the list of local varaibles, | |
10842 | therefore we must subtract the Parameter Number from local variable | |
10843 | total. | |
10844 | *) | |
10845 | RETURN( n-NoOfParam(Sym) ) | |
10846 | END NoOfLocalVar ; | |
10847 | ||
10848 | ||
10849 | (* | |
10850 | IsParameterVar - returns true if parameter symbol Sym | |
10851 | was declared as a VAR. | |
10852 | *) | |
10853 | ||
10854 | PROCEDURE IsParameterVar (Sym: CARDINAL) : BOOLEAN ; | |
10855 | VAR | |
10856 | pSym: PtrToSymbol ; | |
10857 | BEGIN | |
10858 | pSym := GetPsym(Sym) ; | |
10859 | WITH pSym^ DO | |
10860 | CASE SymbolType OF | |
10861 | ||
10862 | ParamSym : RETURN( FALSE ) | | |
10863 | VarParamSym: RETURN( TRUE ) | |
10864 | ||
10865 | ELSE | |
10866 | InternalError ('expecting Param or VarParam symbol') | |
10867 | END | |
10868 | END | |
10869 | END IsParameterVar ; | |
10870 | ||
10871 | ||
10872 | (* | |
10873 | IsParameterUnbounded - returns TRUE if parameter, Sym, is | |
10874 | unbounded. | |
10875 | *) | |
10876 | ||
10877 | PROCEDURE IsParameterUnbounded (Sym: CARDINAL) : BOOLEAN ; | |
10878 | VAR | |
10879 | pSym: PtrToSymbol ; | |
10880 | BEGIN | |
10881 | pSym := GetPsym(Sym) ; | |
10882 | WITH pSym^ DO | |
10883 | CASE SymbolType OF | |
10884 | ||
10885 | ParamSym : RETURN( Param.IsUnbounded ) | | |
10886 | VarParamSym: RETURN( VarParam.IsUnbounded ) | |
10887 | ||
10888 | ELSE | |
10889 | InternalError ('expecting Param or VarParam symbol') | |
10890 | END | |
10891 | END | |
10892 | END IsParameterUnbounded ; | |
10893 | ||
10894 | ||
10895 | (* | |
10896 | IsUnboundedParam - Returns a conditional depending whether parameter | |
10897 | ParamNo is an unbounded array procedure parameter. | |
10898 | *) | |
10899 | ||
10900 | PROCEDURE IsUnboundedParam (Sym: CARDINAL; ParamNo: CARDINAL) : BOOLEAN ; | |
10901 | VAR | |
10902 | param: CARDINAL ; | |
10903 | BEGIN | |
10904 | Assert(IsProcedure(Sym) OR IsProcType(Sym)) ; | |
10905 | param := GetNthParam(Sym, ParamNo) ; | |
10906 | RETURN( IsParameterUnbounded(param) ) | |
10907 | END IsUnboundedParam ; | |
10908 | ||
10909 | ||
10910 | (* | |
10911 | IsParameter - returns true if Sym is a parameter symbol. | |
10912 | *) | |
10913 | ||
10914 | PROCEDURE IsParameter (Sym: CARDINAL) : BOOLEAN ; | |
10915 | VAR | |
10916 | pSym: PtrToSymbol ; | |
10917 | BEGIN | |
10918 | pSym := GetPsym(Sym) ; | |
10919 | WITH pSym^ DO | |
10920 | CASE SymbolType OF | |
10921 | ||
10922 | ParamSym, | |
10923 | VarParamSym: RETURN( TRUE ) | |
10924 | ||
10925 | ELSE | |
10926 | RETURN( FALSE ) | |
10927 | END | |
10928 | END | |
10929 | END IsParameter ; | |
10930 | ||
10931 | ||
10932 | (* | |
10933 | GetParameterShadowVar - returns the local variable associated with the | |
10934 | parameter symbol, sym. | |
10935 | *) | |
10936 | ||
10937 | PROCEDURE GetParameterShadowVar (sym: CARDINAL) : CARDINAL ; | |
10938 | VAR | |
10939 | pSym: PtrToSymbol ; | |
10940 | BEGIN | |
10941 | pSym := GetPsym(sym) ; | |
10942 | WITH pSym^ DO | |
10943 | CASE SymbolType OF | |
10944 | ||
10945 | ParamSym : RETURN( Param.ShadowVar ) | | |
10946 | VarParamSym: RETURN( VarParam.ShadowVar ) | |
10947 | ||
10948 | ELSE | |
10949 | InternalError ('expecting a ParamSym or VarParamSym') | |
10950 | END | |
10951 | END | |
10952 | END GetParameterShadowVar ; | |
10953 | ||
10954 | ||
10955 | (* | |
10956 | IsProcedure - returns true if Sym is a procedure symbol. | |
10957 | *) | |
10958 | ||
10959 | PROCEDURE IsProcedure (Sym: CARDINAL) : BOOLEAN ; | |
10960 | VAR | |
10961 | pSym: PtrToSymbol ; | |
10962 | BEGIN | |
10963 | CheckLegal(Sym) ; | |
10964 | pSym := GetPsym(Sym) ; | |
10965 | RETURN( pSym^.SymbolType=ProcedureSym ) | |
10966 | END IsProcedure ; | |
10967 | ||
10968 | ||
10969 | (* | |
10970 | ProcedureParametersDefined - dictates to procedure symbol, Sym, | |
10971 | that its parameters have been defined. | |
10972 | *) | |
10973 | ||
10974 | PROCEDURE ProcedureParametersDefined (Sym: CARDINAL) ; | |
10975 | VAR | |
10976 | pSym: PtrToSymbol ; | |
10977 | BEGIN | |
10978 | CheckLegal(Sym) ; | |
10979 | pSym := GetPsym(Sym) ; | |
10980 | WITH pSym^ DO | |
10981 | CASE SymbolType OF | |
10982 | ||
10983 | ErrorSym : | | |
10984 | ProcedureSym: Assert(NOT Procedure.ParamDefined) ; | |
10985 | Procedure.ParamDefined := TRUE | |
10986 | ||
10987 | ELSE | |
10988 | InternalError ('expecting a Procedure symbol') | |
10989 | END | |
10990 | END | |
10991 | END ProcedureParametersDefined ; | |
10992 | ||
10993 | ||
10994 | (* | |
10995 | AreProcedureParametersDefined - returns true if the parameters to procedure | |
10996 | symbol, Sym, have been defined. | |
10997 | *) | |
10998 | ||
10999 | PROCEDURE AreProcedureParametersDefined (Sym: CARDINAL) : BOOLEAN ; | |
11000 | VAR | |
11001 | pSym: PtrToSymbol ; | |
11002 | BEGIN | |
11003 | CheckLegal(Sym) ; | |
11004 | pSym := GetPsym(Sym) ; | |
11005 | WITH pSym^ DO | |
11006 | CASE SymbolType OF | |
11007 | ||
11008 | ErrorSym : RETURN( FALSE ) | | |
11009 | ProcedureSym: RETURN( Procedure.ParamDefined ) | |
11010 | ||
11011 | ELSE | |
11012 | InternalError ('expecting a Procedure symbol') | |
11013 | END | |
11014 | END | |
11015 | END AreProcedureParametersDefined ; | |
11016 | ||
11017 | ||
11018 | (* | |
11019 | ParametersDefinedInDefinition - dictates to procedure symbol, Sym, | |
11020 | that its parameters have been defined in | |
11021 | a definition module. | |
11022 | *) | |
11023 | ||
11024 | PROCEDURE ParametersDefinedInDefinition (Sym: CARDINAL) ; | |
11025 | VAR | |
11026 | pSym: PtrToSymbol ; | |
11027 | BEGIN | |
11028 | CheckLegal(Sym) ; | |
11029 | pSym := GetPsym(Sym) ; | |
11030 | WITH pSym^ DO | |
11031 | CASE SymbolType OF | |
11032 | ||
11033 | ErrorSym : | | |
11034 | ProcedureSym: Assert(NOT Procedure.DefinedInDef) ; | |
11035 | Procedure.DefinedInDef := TRUE | |
11036 | ||
11037 | ELSE | |
11038 | InternalError ('expecting a Procedure symbol') | |
11039 | END | |
11040 | END | |
11041 | END ParametersDefinedInDefinition ; | |
11042 | ||
11043 | ||
11044 | (* | |
11045 | AreParametersDefinedInDefinition - returns true if procedure symbol, Sym, | |
11046 | has had its parameters been defined in | |
11047 | a definition module. | |
11048 | *) | |
11049 | ||
11050 | PROCEDURE AreParametersDefinedInDefinition (Sym: CARDINAL) : BOOLEAN ; | |
11051 | VAR | |
11052 | pSym: PtrToSymbol ; | |
11053 | BEGIN | |
11054 | CheckLegal(Sym) ; | |
11055 | pSym := GetPsym(Sym) ; | |
11056 | WITH pSym^ DO | |
11057 | CASE SymbolType OF | |
11058 | ||
11059 | ErrorSym : RETURN( FALSE ) | | |
11060 | ProcedureSym: RETURN( Procedure.DefinedInDef ) | |
11061 | ||
11062 | ELSE | |
11063 | InternalError ('expecting a Procedure symbol') | |
11064 | END | |
11065 | END | |
11066 | END AreParametersDefinedInDefinition ; | |
11067 | ||
11068 | ||
11069 | (* | |
11070 | ParametersDefinedInImplementation - dictates to procedure symbol, Sym, | |
11071 | that its parameters have been defined in | |
11072 | a implemtation module. | |
11073 | *) | |
11074 | ||
11075 | PROCEDURE ParametersDefinedInImplementation (Sym: CARDINAL) ; | |
11076 | VAR | |
11077 | pSym: PtrToSymbol ; | |
11078 | BEGIN | |
11079 | CheckLegal(Sym) ; | |
11080 | pSym := GetPsym(Sym) ; | |
11081 | WITH pSym^ DO | |
11082 | CASE SymbolType OF | |
11083 | ||
11084 | ErrorSym : | | |
11085 | ProcedureSym: Assert(NOT Procedure.DefinedInImp) ; | |
11086 | Procedure.DefinedInImp := TRUE | |
11087 | ||
11088 | ELSE | |
11089 | InternalError ('expecting a Procedure symbol') | |
11090 | END | |
11091 | END | |
11092 | END ParametersDefinedInImplementation ; | |
11093 | ||
11094 | ||
11095 | (* | |
11096 | AreParametersDefinedInImplementation - returns true if procedure symbol, Sym, | |
11097 | has had its parameters been defined in | |
11098 | an implementation module. | |
11099 | *) | |
11100 | ||
11101 | PROCEDURE AreParametersDefinedInImplementation (Sym: CARDINAL) : BOOLEAN ; | |
11102 | VAR | |
11103 | pSym: PtrToSymbol ; | |
11104 | BEGIN | |
11105 | CheckLegal(Sym) ; | |
11106 | pSym := GetPsym(Sym) ; | |
11107 | WITH pSym^ DO | |
11108 | CASE SymbolType OF | |
11109 | ||
11110 | ErrorSym : RETURN( FALSE ) | | |
11111 | ProcedureSym: RETURN( Procedure.DefinedInImp ) | |
11112 | ||
11113 | ELSE | |
11114 | InternalError ('expecting a Procedure symbol') | |
11115 | END | |
11116 | END | |
11117 | END AreParametersDefinedInImplementation ; | |
11118 | ||
11119 | ||
11120 | (* | |
11121 | FillInUnknownFields - | |
11122 | *) | |
11123 | ||
11124 | PROCEDURE FillInUnknownFields (tok: CARDINAL; sym: CARDINAL; SymName: Name) ; | |
11125 | VAR | |
11126 | pSym: PtrToSymbol ; | |
11127 | BEGIN | |
11128 | pSym := GetPsym(sym) ; | |
11129 | WITH pSym^ DO | |
11130 | SymbolType := UndefinedSym ; | |
11131 | WITH Undefined DO | |
11132 | name := SymName ; | |
11133 | oafamily := NulSym ; | |
11134 | errorScope := GetCurrentErrorScope () ; | |
11135 | InitWhereFirstUsedTok (tok, At) | |
11136 | END | |
11137 | END | |
11138 | END FillInUnknownFields ; | |
11139 | ||
11140 | ||
11141 | (* | |
11142 | FillInPointerFields - given a new symbol, sym, make it a pointer symbol | |
11143 | and initialize its fields. | |
11144 | *) | |
11145 | ||
11146 | PROCEDURE FillInPointerFields (Sym: CARDINAL; PointerName: Name; | |
11147 | scope: CARDINAL; oaf: CARDINAL) ; | |
11148 | VAR | |
11149 | pSym: PtrToSymbol ; | |
11150 | BEGIN | |
11151 | IF NOT IsError(Sym) | |
11152 | THEN | |
11153 | pSym := GetPsym(Sym) ; | |
11154 | WITH pSym^ DO | |
11155 | SymbolType := PointerSym ; | |
11156 | CASE SymbolType OF | |
11157 | ||
11158 | PointerSym: Pointer.Type := NulSym ; | |
11159 | Pointer.name := PointerName ; | |
11160 | Pointer.oafamily := oaf ; (* The unbounded for this *) | |
11161 | InitTree(Pointer.ConstLitTree) ; (* constants of this type *) | |
11162 | Pointer.Scope := scope ; (* Which scope created it *) | |
11163 | Pointer.Size := InitValue() ; | |
11164 | Pointer.Align := NulSym ; (* Alignment of this type *) | |
11165 | ||
11166 | ELSE | |
11167 | InternalError ('expecting a Pointer symbol') | |
11168 | END | |
11169 | END | |
11170 | END | |
11171 | END FillInPointerFields ; | |
11172 | ||
11173 | ||
11174 | (* | |
11175 | MakePointer - returns a pointer symbol with PointerName. | |
11176 | *) | |
11177 | ||
11178 | PROCEDURE MakePointer (tok: CARDINAL; PointerName: Name) : CARDINAL ; | |
11179 | VAR | |
11180 | oaf, sym: CARDINAL ; | |
11181 | BEGIN | |
11182 | sym := HandleHiddenOrDeclare(tok, PointerName, oaf) ; | |
11183 | FillInPointerFields(sym, PointerName, GetCurrentScope(), oaf) ; | |
11184 | ForeachOAFamily(oaf, doFillInOAFamily) ; | |
11185 | RETURN( sym ) | |
11186 | END MakePointer ; | |
11187 | ||
11188 | ||
11189 | (* | |
11190 | PutPointer - gives a pointer symbol a type, PointerType. | |
11191 | *) | |
11192 | ||
11193 | PROCEDURE PutPointer (Sym: CARDINAL; PointerType: CARDINAL) ; | |
11194 | VAR | |
11195 | pSym: PtrToSymbol ; | |
11196 | BEGIN | |
11197 | pSym := GetPsym(Sym) ; | |
11198 | WITH pSym^ DO | |
11199 | CASE SymbolType OF | |
11200 | ||
11201 | ErrorSym : | | |
11202 | PointerSym: Pointer.Type := PointerType | |
11203 | ||
11204 | ELSE | |
11205 | InternalError ('expecting a Pointer symbol') | |
11206 | END | |
11207 | END | |
11208 | END PutPointer ; | |
11209 | ||
11210 | ||
11211 | (* | |
11212 | IsPointer - returns true is Sym is a pointer type symbol. | |
11213 | *) | |
11214 | ||
11215 | PROCEDURE IsPointer (Sym: CARDINAL) : BOOLEAN ; | |
11216 | VAR | |
11217 | pSym: PtrToSymbol ; | |
11218 | BEGIN | |
11219 | CheckLegal(Sym) ; | |
11220 | pSym := GetPsym(Sym) ; | |
11221 | RETURN( pSym^.SymbolType=PointerSym ) | |
11222 | END IsPointer ; | |
11223 | ||
11224 | ||
11225 | (* | |
11226 | IsRecord - returns true is Sym is a record type symbol. | |
11227 | *) | |
11228 | ||
11229 | PROCEDURE IsRecord (Sym: CARDINAL) : BOOLEAN ; | |
11230 | VAR | |
11231 | pSym: PtrToSymbol ; | |
11232 | BEGIN | |
11233 | CheckLegal(Sym) ; | |
11234 | pSym := GetPsym(Sym) ; | |
11235 | RETURN( pSym^.SymbolType=RecordSym ) | |
11236 | END IsRecord ; | |
11237 | ||
11238 | ||
11239 | (* | |
11240 | IsArray - returns true is Sym is an array type symbol. | |
11241 | *) | |
11242 | ||
11243 | PROCEDURE IsArray (Sym: CARDINAL) : BOOLEAN ; | |
11244 | VAR | |
11245 | pSym: PtrToSymbol ; | |
11246 | BEGIN | |
11247 | CheckLegal(Sym) ; | |
11248 | pSym := GetPsym(Sym) ; | |
11249 | RETURN( pSym^.SymbolType=ArraySym ) | |
11250 | END IsArray ; | |
11251 | ||
11252 | ||
11253 | (* | |
11254 | IsEnumeration - returns true if Sym is an enumeration symbol. | |
11255 | *) | |
11256 | ||
11257 | PROCEDURE IsEnumeration (Sym: CARDINAL) : BOOLEAN ; | |
11258 | VAR | |
11259 | pSym: PtrToSymbol ; | |
11260 | BEGIN | |
11261 | CheckLegal(Sym) ; | |
11262 | pSym := GetPsym(Sym) ; | |
11263 | RETURN( pSym^.SymbolType=EnumerationSym ) | |
11264 | END IsEnumeration ; | |
11265 | ||
11266 | ||
11267 | (* | |
11268 | IsUnbounded - returns true if Sym is an unbounded symbol. | |
11269 | *) | |
11270 | ||
11271 | PROCEDURE IsUnbounded (Sym: CARDINAL) : BOOLEAN ; | |
11272 | VAR | |
11273 | pSym: PtrToSymbol ; | |
11274 | BEGIN | |
11275 | CheckLegal(Sym) ; | |
11276 | pSym := GetPsym(Sym) ; | |
11277 | RETURN( pSym^.SymbolType=UnboundedSym ) | |
11278 | END IsUnbounded ; | |
11279 | ||
11280 | ||
11281 | (* | |
11282 | GetVarScope - returns the symbol which is the scope of variable Sym. | |
11283 | ie a Module, DefImp or Procedure Symbol. | |
11284 | *) | |
11285 | ||
11286 | PROCEDURE GetVarScope (Sym: CARDINAL) : CARDINAL ; | |
11287 | VAR | |
11288 | pSym: PtrToSymbol ; | |
11289 | BEGIN | |
11290 | pSym := GetPsym(Sym) ; | |
11291 | WITH pSym^ DO | |
11292 | CASE SymbolType OF | |
11293 | ||
11294 | ErrorSym: RETURN( NulSym ) | | |
11295 | VarSym : RETURN( Var.Scope ) | |
11296 | ||
11297 | ELSE | |
11298 | InternalError ('expecting a Var symbol') | |
11299 | END | |
11300 | END | |
11301 | END GetVarScope ; | |
11302 | ||
11303 | ||
11304 | (* | |
11305 | NoOfElements - Returns the number of elements in array Sym, | |
11306 | or the number of elements in an enumeration Sym or | |
11307 | the number of interface symbols in an Interface list. | |
11308 | *) | |
11309 | ||
11310 | PROCEDURE NoOfElements (Sym: CARDINAL) : CARDINAL ; | |
11311 | VAR | |
11312 | pSym: PtrToSymbol ; | |
11313 | n : CARDINAL ; | |
11314 | BEGIN | |
11315 | pSym := GetPsym(Sym) ; | |
11316 | WITH pSym^ DO | |
11317 | CASE SymbolType OF | |
11318 | ||
11319 | ErrorSym : n := 0 | | |
11320 | (* | |
11321 | ArraySym , | |
11322 | UnboundedSym : n := 1 | (* Standard language limitation *) | |
11323 | *) | |
11324 | EnumerationSym: n := pSym^.Enumeration.NoOfElements | | |
11325 | InterfaceSym : n := HighIndice(Interface.Parameters) | |
11326 | ||
11327 | ELSE | |
11328 | InternalError ('expecting an Array or UnBounded symbol') | |
11329 | END | |
11330 | END ; | |
11331 | RETURN( n ) | |
11332 | END NoOfElements ; | |
11333 | ||
11334 | ||
11335 | (* | |
11336 | PutArraySubscript - places an index field into the array Sym. The | |
11337 | index field is a subscript sym. | |
11338 | *) | |
11339 | ||
11340 | PROCEDURE PutArraySubscript (Sym: CARDINAL; SubscriptSymbol: CARDINAL) ; | |
11341 | VAR | |
11342 | pSym: PtrToSymbol ; | |
11343 | BEGIN | |
11344 | pSym := GetPsym(Sym) ; | |
11345 | WITH pSym^ DO | |
11346 | CASE SymbolType OF | |
11347 | ||
11348 | ErrorSym: | | |
11349 | ArraySym: Array.Subscript := SubscriptSymbol | |
11350 | ||
11351 | ELSE | |
11352 | InternalError ('expecting an Array symbol') | |
11353 | END | |
11354 | END | |
11355 | END PutArraySubscript ; | |
11356 | ||
11357 | ||
11358 | (* | |
11359 | GetArraySubscript - returns the subscript symbol for array, Sym. | |
11360 | *) | |
11361 | ||
11362 | PROCEDURE GetArraySubscript (Sym: CARDINAL) : CARDINAL ; | |
11363 | VAR | |
11364 | pSym: PtrToSymbol ; | |
11365 | BEGIN | |
11366 | pSym := GetPsym(Sym) ; | |
11367 | WITH pSym^ DO | |
11368 | CASE SymbolType OF | |
11369 | ||
11370 | ErrorSym: RETURN( NulSym ) | | |
11371 | ArraySym: RETURN( Array.Subscript ) | |
11372 | ||
11373 | ELSE | |
11374 | InternalError ('expecting an Array symbol') | |
11375 | END | |
11376 | END | |
11377 | END GetArraySubscript ; | |
11378 | ||
11379 | ||
11380 | (* | |
11381 | MakeSubscript - makes a subscript Symbol. | |
11382 | No name is required. | |
11383 | *) | |
11384 | ||
11385 | PROCEDURE MakeSubscript () : CARDINAL ; | |
11386 | VAR | |
11387 | pSym: PtrToSymbol ; | |
11388 | Sym : CARDINAL ; | |
11389 | BEGIN | |
11390 | NewSym(Sym) ; | |
11391 | pSym := GetPsym(Sym) ; | |
11392 | WITH pSym^ DO | |
11393 | SymbolType := SubscriptSym ; | |
11394 | WITH Subscript DO | |
11395 | Type := NulSym ; (* Index to a subrange symbol. *) | |
11396 | Size := InitValue() ; (* Size of this indice in*Size *) | |
11397 | Offset := InitValue() ; (* Offset at runtime of symbol *) | |
11398 | (* Pseudo ie: Offset+Size*i *) | |
11399 | (* 1..n. The array offset is *) | |
11400 | (* the real memory offset. *) | |
11401 | (* This offset allows the a[i] *) | |
11402 | (* to be calculated without *) | |
11403 | (* the need to perform *) | |
11404 | (* subtractions when a[4..10] *) | |
11405 | (* needs to be indexed. *) | |
11406 | InitWhereDeclared(At) (* Declared here *) | |
11407 | END | |
11408 | END ; | |
11409 | RETURN( Sym ) | |
11410 | END MakeSubscript ; | |
11411 | ||
11412 | ||
11413 | (* | |
11414 | PutSubscript - gives a subscript symbol a type, SimpleType. | |
11415 | *) | |
11416 | ||
11417 | PROCEDURE PutSubscript (Sym: CARDINAL; SimpleType: CARDINAL) ; | |
11418 | VAR | |
11419 | pSym: PtrToSymbol ; | |
11420 | BEGIN | |
11421 | pSym := GetPsym(Sym) ; | |
11422 | WITH pSym^ DO | |
11423 | CASE SymbolType OF | |
11424 | ||
11425 | ErrorSym: | | |
11426 | SubscriptSym: Subscript.Type := SimpleType ; | |
11427 | ||
11428 | ELSE | |
11429 | InternalError ('expecting a SubScript symbol') | |
11430 | END | |
11431 | END | |
11432 | END PutSubscript ; | |
11433 | ||
11434 | ||
11435 | (* | |
11436 | MakeSet - makes a set Symbol with name, SetName. | |
11437 | *) | |
11438 | ||
11439 | PROCEDURE MakeSet (tok: CARDINAL; SetName: Name) : CARDINAL ; | |
11440 | VAR | |
11441 | pSym : PtrToSymbol ; | |
11442 | oaf, sym: CARDINAL ; | |
11443 | BEGIN | |
11444 | sym := HandleHiddenOrDeclare(tok, SetName, oaf) ; | |
11445 | IF NOT IsError(sym) | |
11446 | THEN | |
11447 | pSym := GetPsym(sym) ; | |
11448 | WITH pSym^ DO | |
11449 | SymbolType := SetSym ; | |
11450 | WITH Set DO | |
11451 | name := SetName ; (* The name of the set. *) | |
11452 | Type := NulSym ; (* Index to a subrange symbol. *) | |
11453 | Size := InitValue() ; (* Size of this set *) | |
11454 | InitPacked(packedInfo) ; (* not packed and no *) | |
11455 | (* equivalent (yet). *) | |
11456 | ispacked := FALSE ; (* Not yet known to be packed. *) | |
11457 | oafamily := oaf ; (* The unbounded sym for this *) | |
11458 | Scope := GetCurrentScope() ; (* Which scope created it *) | |
11459 | InitWhereDeclaredTok(tok, At) (* Declared here *) | |
11460 | END | |
11461 | END | |
11462 | END ; | |
11463 | ForeachOAFamily(oaf, doFillInOAFamily) ; | |
11464 | RETURN( sym ) | |
11465 | END MakeSet ; | |
11466 | ||
11467 | ||
11468 | (* | |
11469 | PutSet - places SimpleType as the type for set, Sym. | |
11470 | *) | |
11471 | ||
11472 | PROCEDURE PutSet (Sym: CARDINAL; SimpleType: CARDINAL; packed: BOOLEAN) ; | |
11473 | VAR | |
11474 | pSym: PtrToSymbol ; | |
11475 | BEGIN | |
11476 | pSym := GetPsym(Sym) ; | |
11477 | WITH pSym^ DO | |
11478 | CASE SymbolType OF | |
11479 | ||
11480 | ErrorSym: | | |
11481 | SetSym: WITH Set DO | |
11482 | Type := SimpleType ; (* Index to a subrange symbol *) | |
11483 | (* or an enumeration type. *) | |
11484 | ispacked := packed | |
11485 | END | |
11486 | ELSE | |
11487 | InternalError ('expecting a Set symbol') | |
11488 | END | |
11489 | END | |
11490 | END PutSet ; | |
11491 | ||
11492 | ||
11493 | (* | |
11494 | IsSet - returns TRUE if Sym is a set symbol. | |
11495 | *) | |
11496 | ||
11497 | PROCEDURE IsSet (Sym: CARDINAL) : BOOLEAN ; | |
11498 | VAR | |
11499 | pSym: PtrToSymbol ; | |
11500 | BEGIN | |
11501 | CheckLegal(Sym) ; | |
11502 | pSym := GetPsym(Sym) ; | |
11503 | RETURN( pSym^.SymbolType=SetSym ) | |
11504 | END IsSet ; | |
11505 | ||
11506 | ||
11507 | (* | |
11508 | IsSetPacked - returns TRUE if Sym is packed. | |
11509 | *) | |
11510 | ||
11511 | PROCEDURE IsSetPacked (Sym: CARDINAL) : BOOLEAN ; | |
11512 | VAR | |
11513 | pSym: PtrToSymbol ; | |
11514 | BEGIN | |
11515 | CheckLegal (Sym) ; | |
11516 | pSym := GetPsym (Sym) ; | |
11517 | RETURN (pSym^.SymbolType=SetSym) AND pSym^.Set.ispacked | |
11518 | END IsSetPacked ; | |
11519 | ||
11520 | ||
11521 | (* | |
11522 | ForeachParameterDo - | |
11523 | *) | |
11524 | ||
11525 | PROCEDURE ForeachParameterDo (p: CheckProcedure) ; | |
11526 | VAR | |
11527 | l, h: CARDINAL ; | |
11528 | BEGIN | |
11529 | l := LowIndice(Symbols) ; | |
11530 | h := HighIndice(Symbols) ; | |
11531 | WHILE l<=h DO | |
11532 | IF IsParameter(l) | |
11533 | THEN | |
11534 | p(l) | |
11535 | END ; | |
11536 | INC(l) | |
11537 | END | |
11538 | END ForeachParameterDo ; | |
11539 | ||
11540 | ||
11541 | (* | |
11542 | CheckUnbounded - checks to see if parameter, Sym, is now an unbounded parameter. | |
11543 | *) | |
11544 | ||
11545 | PROCEDURE CheckUnbounded (Sym: CARDINAL) ; | |
11546 | VAR | |
11547 | pSym: PtrToSymbol ; | |
11548 | BEGIN | |
11549 | CheckLegal(Sym) ; | |
11550 | pSym := GetPsym(Sym) ; | |
11551 | WITH pSym^ DO | |
11552 | CASE SymbolType OF | |
11553 | ||
11554 | ParamSym : IF IsUnbounded(Param.Type) | |
11555 | THEN | |
11556 | Param.IsUnbounded := TRUE | |
11557 | END | | |
11558 | VarParamSym: IF IsUnbounded(VarParam.Type) | |
11559 | THEN | |
11560 | VarParam.IsUnbounded := TRUE | |
11561 | END | |
11562 | ||
11563 | ELSE | |
11564 | HALT | |
11565 | END | |
11566 | END | |
11567 | END CheckUnbounded ; | |
11568 | ||
11569 | ||
11570 | (* | |
11571 | IsOAFamily - returns TRUE if, Sym, is an OAFamily symbol. | |
11572 | *) | |
11573 | ||
11574 | PROCEDURE IsOAFamily (Sym: CARDINAL) : BOOLEAN ; | |
11575 | VAR | |
11576 | pSym: PtrToSymbol ; | |
11577 | BEGIN | |
11578 | CheckLegal(Sym) ; | |
11579 | pSym := GetPsym(Sym) ; | |
11580 | RETURN( pSym^.SymbolType=OAFamilySym ) | |
11581 | END IsOAFamily ; | |
11582 | ||
11583 | ||
11584 | (* | |
11585 | MakeOAFamily - makes an OAFamily symbol based on SimpleType. | |
11586 | It returns the OAFamily symbol. A new symbol | |
11587 | is created if one does not already exist for | |
11588 | SimpleType. | |
11589 | *) | |
11590 | ||
11591 | PROCEDURE MakeOAFamily (SimpleType: CARDINAL) : CARDINAL ; | |
11592 | VAR | |
11593 | pSym: PtrToSymbol ; | |
11594 | sym : CARDINAL ; | |
11595 | BEGIN | |
11596 | sym := GetOAFamily(SimpleType) ; | |
11597 | IF sym=NulSym | |
11598 | THEN | |
11599 | NewSym(sym) ; | |
11600 | pSym := GetPsym(sym) ; | |
11601 | WITH pSym^ DO | |
11602 | SymbolType := OAFamilySym ; | |
11603 | OAFamily.MaxDimensions := 0 ; | |
11604 | OAFamily.SimpleType := SimpleType ; | |
11605 | OAFamily.Dimensions := Indexing.InitIndex(1) | |
11606 | END ; | |
11607 | PutOAFamily(SimpleType, sym) | |
11608 | END ; | |
11609 | RETURN( sym ) | |
11610 | END MakeOAFamily ; | |
11611 | ||
11612 | ||
11613 | (* | |
11614 | GetOAFamily - returns the oafamily symbol associated with | |
11615 | SimpleType. | |
11616 | *) | |
11617 | ||
11618 | PROCEDURE GetOAFamily (SimpleType: CARDINAL) : CARDINAL ; | |
11619 | VAR | |
11620 | pSym: PtrToSymbol ; | |
11621 | BEGIN | |
11622 | pSym := GetPsym(SimpleType) ; | |
11623 | WITH pSym^ DO | |
11624 | CASE SymbolType OF | |
11625 | ||
11626 | ErrorSym : RETURN( NulSym ) | | |
11627 | RecordSym : RETURN( Record.oafamily ) | | |
11628 | SubrangeSym : RETURN( Subrange.oafamily ) | | |
11629 | EnumerationSym: RETURN( Enumeration.oafamily ) | | |
11630 | ArraySym : RETURN( Array.oafamily ) | | |
11631 | ProcTypeSym : RETURN( ProcType.oafamily ) | | |
11632 | TypeSym : RETURN( Type.oafamily ) | | |
11633 | PointerSym : RETURN( Pointer.oafamily ) | | |
11634 | SetSym : RETURN( Set.oafamily ) | | |
11635 | UndefinedSym : RETURN( Undefined.oafamily ) | |
11636 | ||
11637 | ELSE | |
11638 | RETURN( NulSym ) | |
11639 | END | |
11640 | END | |
11641 | END GetOAFamily ; | |
11642 | ||
11643 | ||
11644 | (* | |
11645 | PutOAFamily - places the, oaf, into, SimpleType, oafamily field. | |
11646 | *) | |
11647 | ||
11648 | PROCEDURE PutOAFamily (SimpleType: CARDINAL; oaf: CARDINAL) ; | |
11649 | VAR | |
11650 | pSym: PtrToSymbol ; | |
11651 | BEGIN | |
11652 | pSym := GetPsym(SimpleType) ; | |
11653 | WITH pSym^ DO | |
11654 | CASE SymbolType OF | |
11655 | ||
11656 | ErrorSym : | | |
11657 | RecordSym : Record.oafamily := oaf | | |
11658 | SubrangeSym : Subrange.oafamily := oaf | | |
11659 | EnumerationSym: Enumeration.oafamily := oaf | | |
11660 | ArraySym : Array.oafamily := oaf | | |
11661 | ProcTypeSym : ProcType.oafamily := oaf | | |
11662 | TypeSym : Type.oafamily := oaf | | |
11663 | PointerSym : Pointer.oafamily := oaf | | |
11664 | SetSym : Set.oafamily := oaf | | |
11665 | UndefinedSym : Undefined.oafamily := oaf | |
11666 | ||
11667 | ELSE | |
11668 | InternalError ('not expecting this SimpleType') | |
11669 | END | |
11670 | END | |
11671 | END PutOAFamily ; | |
11672 | ||
11673 | ||
11674 | (* | |
11675 | ForeachOAFamily - call, p[oaf, ndim, symbol] for every unbounded symbol, | |
11676 | sym, in the oaf. | |
11677 | *) | |
11678 | ||
11679 | PROCEDURE ForeachOAFamily (sym: CARDINAL; p: FamilyOperation) ; | |
11680 | VAR | |
11681 | pSym: PtrToSymbol ; | |
11682 | h, i: CARDINAL ; | |
11683 | pc : POINTER TO CARDINAL ; | |
11684 | BEGIN | |
11685 | IF sym#NulSym | |
11686 | THEN | |
11687 | pSym := GetPsym(sym) ; | |
11688 | WITH pSym^ DO | |
11689 | CASE SymbolType OF | |
11690 | ||
11691 | OAFamilySym: h := Indexing.HighIndice(OAFamily.Dimensions) ; | |
11692 | i := 1 ; | |
11693 | WHILE i<=h DO | |
11694 | pc := Indexing.GetIndice(OAFamily.Dimensions, i) ; | |
11695 | IF pc#NIL | |
11696 | THEN | |
11697 | p(sym, i, pc^) | |
11698 | END ; | |
11699 | INC(i) | |
11700 | END | |
11701 | ||
11702 | ELSE | |
11703 | InternalError ('expecting OAFamily symbol') | |
11704 | END | |
11705 | END | |
11706 | END | |
11707 | END ForeachOAFamily ; | |
11708 | ||
11709 | ||
11710 | (* | |
11711 | doFillInOAFamily - | |
11712 | *) | |
11713 | ||
11714 | PROCEDURE doFillInOAFamily (oaf: CARDINAL; i: CARDINAL; unbounded: CARDINAL) ; | |
11715 | VAR | |
11716 | SimpleType: CARDINAL ; | |
11717 | BEGIN | |
11718 | SimpleType := GetType(oaf) ; | |
11719 | IF unbounded#NulSym | |
11720 | THEN | |
11721 | FillInUnboundedFields(GetTokenNo(), unbounded, SimpleType, i) | |
11722 | END | |
11723 | END doFillInOAFamily ; | |
11724 | ||
11725 | ||
11726 | (* | |
11727 | FillInUnboundedFields - | |
11728 | *) | |
11729 | ||
11730 | PROCEDURE FillInUnboundedFields (tok: CARDINAL; | |
11731 | sym: CARDINAL; SimpleType: CARDINAL; ndim: CARDINAL) ; | |
11732 | VAR | |
11733 | pSym : PtrToSymbol ; | |
11734 | Contents: CARDINAL ; | |
11735 | i : CARDINAL ; | |
11736 | BEGIN | |
11737 | IF sym#NulSym | |
11738 | THEN | |
11739 | pSym := GetPsym(sym) ; | |
11740 | WITH pSym^ DO | |
11741 | SymbolType := UnboundedSym ; | |
11742 | WITH Unbounded DO | |
11743 | Type := SimpleType ; (* Index to a simple type. *) | |
11744 | Size := InitValue() ; (* Size in bytes for this sym *) | |
11745 | Scope := GetScope(SimpleType) ; (* Which scope will create it *) | |
11746 | InitWhereDeclaredTok(tok, At) ; (* Declared here *) | |
11747 | NewSym(RecordType) ; | |
11748 | FillInRecordFields(tok, RecordType, NulName, GetScope(SimpleType), NulSym) ; | |
11749 | NewSym(Contents) ; | |
11750 | FillInPointerFields(Contents, NulName, GetScope(SimpleType), NulSym) ; | |
11751 | PutPointer(Contents, SimpleType) ; | |
11752 | (* create the contents field for the unbounded array. *) | |
11753 | Assert (PutFieldRecord(RecordType, | |
11754 | MakeKey(UnboundedAddressName), | |
11755 | Contents, NulSym) # NulSym) ; | |
11756 | (* create all the high fields for the unbounded array. *) | |
11757 | i := 1 ; | |
11758 | WHILE i<=ndim DO | |
11759 | Assert (PutFieldRecord(RecordType, | |
11760 | makekey(string(Mark(Sprintf1(Mark(InitString(UnboundedHighName)), i)))), | |
11761 | Cardinal, NulSym) # NulSym) ; | |
11762 | INC(i) | |
11763 | END ; | |
11764 | Dimensions := ndim | |
11765 | END | |
11766 | END ; | |
11767 | ForeachParameterDo(CheckUnbounded) | |
11768 | END | |
11769 | END FillInUnboundedFields ; | |
11770 | ||
11771 | ||
11772 | (* | |
11773 | MakeUnbounded - makes an unbounded array Symbol. | |
11774 | ndim is the number of dimensions required. | |
11775 | No name is required. | |
11776 | *) | |
11777 | ||
11778 | PROCEDURE MakeUnbounded (tok: CARDINAL; | |
11779 | SimpleType: CARDINAL; ndim: CARDINAL) : CARDINAL ; | |
11780 | VAR | |
11781 | sym, oaf: CARDINAL ; | |
11782 | BEGIN | |
11783 | oaf := MakeOAFamily(SimpleType) ; | |
11784 | sym := GetUnbounded(oaf, ndim) ; | |
11785 | IF sym=NulSym | |
11786 | THEN | |
11787 | NewSym(sym) ; | |
11788 | IF IsUnknown (SimpleType) | |
11789 | THEN | |
11790 | PutPartialUnbounded(sym, SimpleType, ndim) | |
11791 | ELSE | |
11792 | FillInUnboundedFields(tok, sym, SimpleType, ndim) | |
11793 | END ; | |
11794 | PutUnbounded(oaf, sym, ndim) | |
11795 | END ; | |
11796 | RETURN( sym ) | |
11797 | END MakeUnbounded ; | |
11798 | ||
11799 | ||
11800 | (* | |
11801 | GetUnbounded - returns the unbounded symbol associated with | |
11802 | the OAFamily symbol, oaf, and the number of | |
11803 | dimensions, ndim, of the open array. | |
11804 | *) | |
11805 | ||
11806 | PROCEDURE GetUnbounded (oaf: CARDINAL; ndim: CARDINAL) : CARDINAL ; | |
11807 | VAR | |
11808 | pSym: PtrToSymbol ; | |
11809 | BEGIN | |
11810 | pSym := GetPsym(oaf) ; | |
11811 | WITH pSym^ DO | |
11812 | CASE SymbolType OF | |
11813 | ||
11814 | OAFamilySym: WITH OAFamily DO | |
11815 | IF ndim>MaxDimensions | |
11816 | THEN | |
11817 | RETURN( NulSym ) | |
11818 | ELSE | |
11819 | RETURN( GetFromIndex(Dimensions, ndim) ) | |
11820 | END | |
11821 | END | |
11822 | ||
11823 | ELSE | |
11824 | InternalError ('expecting OAFamily symbol') | |
11825 | END | |
11826 | END | |
11827 | END GetUnbounded ; | |
11828 | ||
11829 | ||
11830 | (* | |
11831 | PutUnbounded - associates the unbounded symbol, open, with | |
11832 | SimpleType. | |
11833 | *) | |
11834 | ||
11835 | PROCEDURE PutUnbounded (oaf: CARDINAL; sym: CARDINAL; ndim: CARDINAL) ; | |
11836 | VAR | |
11837 | pSym: PtrToSymbol ; | |
11838 | BEGIN | |
11839 | pSym := GetPsym(oaf) ; | |
11840 | WITH pSym^ DO | |
11841 | CASE SymbolType OF | |
11842 | ||
11843 | OAFamilySym: WITH OAFamily DO | |
11844 | (* need to check to see if we need to add NulSym for all dimensions < ndim | |
11845 | which have not been used. *) | |
11846 | WHILE MaxDimensions<ndim DO | |
11847 | INC(MaxDimensions) ; | |
11848 | IF MaxDimensions<ndim | |
11849 | THEN | |
11850 | (* add NulSym to an unused dimension. *) | |
11851 | PutIntoIndex(Dimensions, MaxDimensions, NulSym) | |
11852 | END | |
11853 | END ; | |
11854 | (* and finally add the known sym. *) | |
11855 | PutIntoIndex(Dimensions, ndim, sym) | |
11856 | END | |
11857 | ||
11858 | ELSE | |
11859 | InternalError ('expecting OAFamily symbol') | |
11860 | END | |
11861 | END | |
11862 | END PutUnbounded ; | |
11863 | ||
11864 | ||
11865 | (* | |
11866 | GetUnboundedRecordType - returns the record type used to | |
11867 | implement the unbounded array. | |
11868 | *) | |
11869 | ||
11870 | PROCEDURE GetUnboundedRecordType (Sym: CARDINAL) : CARDINAL ; | |
11871 | VAR | |
11872 | pSym: PtrToSymbol ; | |
11873 | BEGIN | |
11874 | pSym := GetPsym(Sym) ; | |
11875 | WITH pSym^ DO | |
11876 | CASE SymbolType OF | |
11877 | ||
11878 | UnboundedSym: RETURN( Unbounded.RecordType ) | |
11879 | ||
11880 | ELSE | |
11881 | InternalError ('expecting an UnBounded symbol') | |
11882 | END | |
11883 | END | |
11884 | END GetUnboundedRecordType ; | |
11885 | ||
11886 | ||
11887 | (* | |
11888 | GetUnboundedAddressOffset - returns the offset of the address field | |
11889 | inside the record used to implement the | |
11890 | unbounded type. | |
11891 | *) | |
11892 | ||
11893 | PROCEDURE GetUnboundedAddressOffset (sym: CARDINAL) : CARDINAL ; | |
11894 | VAR | |
11895 | field, | |
11896 | rec : CARDINAL ; | |
11897 | BEGIN | |
11898 | rec := GetUnboundedRecordType(sym) ; | |
11899 | IF rec=NulSym | |
11900 | THEN | |
11901 | InternalError ('expecting record type to be declared') | |
11902 | ELSE | |
11903 | field := GetLocalSym(rec, MakeKey(UnboundedAddressName)) ; | |
11904 | IF field=NulSym | |
11905 | THEN | |
11906 | InternalError ('expecting address field to be present inside unbounded record') | |
11907 | ELSE | |
11908 | RETURN( field ) | |
11909 | END | |
11910 | END | |
11911 | END GetUnboundedAddressOffset ; | |
11912 | ||
11913 | ||
11914 | (* | |
11915 | GetUnboundedHighOffset - returns the offset of the high field | |
11916 | inside the record used to implement the | |
11917 | unbounded type. | |
11918 | *) | |
11919 | ||
11920 | PROCEDURE GetUnboundedHighOffset (sym: CARDINAL; ndim: CARDINAL) : CARDINAL ; | |
11921 | VAR | |
11922 | rec: CARDINAL ; | |
11923 | BEGIN | |
11924 | rec := GetUnboundedRecordType(sym) ; | |
11925 | IF rec=NulSym | |
11926 | THEN | |
11927 | InternalError ('expecting record type to be declared') | |
11928 | ELSE | |
11929 | RETURN GetLocalSym(rec, | |
11930 | makekey(string(Mark(Sprintf1(Mark(InitString(UnboundedHighName)), | |
11931 | ndim))))) | |
11932 | END | |
11933 | END GetUnboundedHighOffset ; | |
11934 | ||
11935 | ||
11936 | (* | |
11937 | GetArrayDimension - returns the number of dimensions defined. | |
11938 | *) | |
11939 | ||
11940 | PROCEDURE GetArrayDimension (sym: CARDINAL) : CARDINAL ; | |
11941 | VAR | |
11942 | n: CARDINAL ; | |
11943 | BEGIN | |
11944 | n := 0 ; | |
11945 | WHILE IsArray(sym) DO | |
11946 | sym := SkipType(GetType(sym)) ; | |
11947 | INC(n) | |
11948 | END ; | |
11949 | RETURN( n ) | |
11950 | END GetArrayDimension ; | |
11951 | ||
11952 | ||
11953 | (* | |
11954 | GetDimension - return the number of dimensions associated with | |
11955 | this unbounded ARRAY parameter. | |
11956 | *) | |
11957 | ||
11958 | PROCEDURE GetDimension (sym: CARDINAL) : CARDINAL ; | |
11959 | VAR | |
11960 | pSym: PtrToSymbol ; | |
11961 | BEGIN | |
11962 | pSym := GetPsym(sym) ; | |
11963 | WITH pSym^ DO | |
11964 | CASE SymbolType OF | |
11965 | ||
11966 | PartialUnboundedSym: RETURN( PartialUnbounded.NDim ) | | |
11967 | UnboundedSym : RETURN( Unbounded.Dimensions ) | | |
11968 | OAFamilySym : RETURN( OAFamily.MaxDimensions ) | | |
11969 | ParamSym : IF Param.IsUnbounded | |
11970 | THEN | |
11971 | RETURN( GetDimension(GetType(sym)) ) | |
11972 | ELSE | |
11973 | InternalError ('expecting unbounded paramater') | |
11974 | END | | |
11975 | VarParamSym : IF VarParam.IsUnbounded | |
11976 | THEN | |
11977 | RETURN( GetDimension(GetType(sym)) ) | |
11978 | ELSE | |
11979 | InternalError ('expecting unbounded paramater') | |
11980 | END | | |
11981 | ArraySym : RETURN( GetArrayDimension(sym) ) | | |
11982 | TypeSym : RETURN( GetDimension(GetType(sym)) ) | | |
11983 | VarSym : RETURN( GetDimension(GetType(sym)) ) | |
11984 | ||
11985 | ELSE | |
11986 | InternalError ('expecting PartialUnbounded') | |
11987 | END | |
11988 | END | |
11989 | END GetDimension ; | |
11990 | ||
11991 | ||
11992 | (* | |
11993 | PutArray - places a type symbol into an Array. | |
11994 | *) | |
11995 | ||
11996 | PROCEDURE PutArray (Sym, TypeSymbol: CARDINAL) ; | |
11997 | VAR | |
11998 | pSym: PtrToSymbol ; | |
11999 | BEGIN | |
12000 | pSym := GetPsym(Sym) ; | |
12001 | WITH pSym^ DO | |
12002 | CASE SymbolType OF | |
12003 | ||
12004 | ErrorSym: | | |
12005 | ArraySym: WITH Array DO | |
12006 | Type := TypeSymbol (* The Array Type. ARRAY OF Type. *) | |
12007 | END | |
12008 | ELSE | |
12009 | InternalError ('expecting an Array symbol') | |
12010 | END | |
12011 | END | |
12012 | END PutArray ; | |
12013 | ||
12014 | ||
12015 | (* | |
12016 | ResolveConstructorType - if, sym, has an unresolved constructor type | |
12017 | then attempt to resolve it by examining the | |
12018 | from, type. | |
12019 | *) | |
12020 | ||
12021 | PROCEDURE ResolveConstructorType (sym: CARDINAL; | |
12022 | VAR type: CARDINAL; | |
12023 | VAR from: CARDINAL; | |
12024 | VAR unres: BOOLEAN) ; | |
12025 | BEGIN | |
12026 | IF unres | |
12027 | THEN | |
12028 | IF IsConstructor(from) | |
12029 | THEN | |
12030 | IF IsConstructorResolved(from) | |
12031 | THEN | |
12032 | unres := FALSE ; | |
12033 | type := GetType(from) ; | |
12034 | IF (type#NulSym) AND IsSet(SkipType(type)) | |
12035 | THEN | |
12036 | PutConstSet(sym) | |
12037 | END | |
12038 | END | |
12039 | ELSIF (from#NulSym) AND IsSet(SkipType(from)) | |
12040 | THEN | |
12041 | unres := FALSE ; | |
12042 | type := from ; | |
12043 | PutConstSet(sym) | |
12044 | ELSIF (from#NulSym) AND (IsRecord(SkipType(from)) OR IsArray(SkipType(from))) | |
12045 | THEN | |
12046 | unres := FALSE ; | |
12047 | type := from | |
12048 | END | |
12049 | END | |
12050 | END ResolveConstructorType ; | |
12051 | ||
12052 | ||
12053 | (* | |
12054 | IsConstructorResolved - returns TRUE if the constructor does not | |
12055 | have an unresolved type. | |
12056 | *) | |
12057 | ||
12058 | PROCEDURE IsConstructorResolved (sym: CARDINAL) : BOOLEAN ; | |
12059 | VAR | |
12060 | pSym: PtrToSymbol ; | |
12061 | BEGIN | |
12062 | pSym := GetPsym(sym) ; | |
12063 | WITH pSym^ DO | |
12064 | CASE SymbolType OF | |
12065 | ||
12066 | ConstVarSym: RETURN( NOT ConstVar.UnresFromType ) | | |
12067 | ConstLitSym: RETURN( NOT ConstLit.UnresFromType ) | |
12068 | ||
12069 | ELSE | |
12070 | InternalError ('expecting ConstVar or ConstLit symbol') | |
12071 | END | |
12072 | END | |
12073 | END IsConstructorResolved ; | |
12074 | ||
12075 | ||
12076 | (* | |
12077 | CanResolveConstructor - returns TRUE if the type of the constructor, | |
12078 | sym, is known. | |
12079 | *) | |
12080 | ||
12081 | PROCEDURE CanResolveConstructor (sym: CARDINAL) : BOOLEAN ; | |
12082 | VAR | |
12083 | pSym: PtrToSymbol ; | |
12084 | BEGIN | |
12085 | IF NOT IsConstructorResolved(sym) | |
12086 | THEN | |
12087 | pSym := GetPsym(sym) ; | |
12088 | WITH pSym^ DO | |
12089 | CASE SymbolType OF | |
12090 | ||
12091 | ConstVarSym: WITH ConstVar DO | |
12092 | ResolveConstructorType(sym, Type, FromType, UnresFromType) | |
12093 | END | | |
12094 | ConstLitSym: WITH ConstLit DO | |
12095 | ResolveConstructorType(sym, Type, FromType, UnresFromType) | |
12096 | END | | |
12097 | ||
12098 | ELSE | |
12099 | InternalError ('expecting ConstVar or ConstLit symbol') | |
12100 | END | |
12101 | END | |
12102 | END ; | |
12103 | RETURN( IsConstructorResolved(sym) ) | |
12104 | END CanResolveConstructor ; | |
12105 | ||
12106 | ||
12107 | (* | |
12108 | CheckAllConstructorsResolved - checks to see that the | |
12109 | UnresolvedConstructorType list is | |
12110 | empty and if it is not then it | |
12111 | generates error messages. | |
12112 | *) | |
12113 | ||
12114 | PROCEDURE CheckAllConstructorsResolved ; | |
12115 | VAR | |
12116 | i, n, s: CARDINAL ; | |
12117 | e : Error ; | |
12118 | BEGIN | |
12119 | n := NoOfItemsInList(UnresolvedConstructorType) ; | |
12120 | IF n>0 | |
12121 | THEN | |
12122 | FOR i := 1 TO n DO | |
12123 | s := GetItemFromList(UnresolvedConstructorType, i) ; | |
12124 | e := NewError(GetDeclaredMod(s)) ; | |
12125 | ErrorFormat0(e, 'constructor has an unknown type') | |
12126 | END ; | |
12127 | FlushErrors | |
12128 | END | |
12129 | END CheckAllConstructorsResolved ; | |
12130 | ||
12131 | ||
12132 | (* | |
12133 | ResolveConstructorTypes - to be called at the end of pass three. Its | |
12134 | purpose is to fix up all constructors whose | |
12135 | types are unknown. | |
12136 | *) | |
12137 | ||
12138 | PROCEDURE ResolveConstructorTypes ; | |
12139 | VAR | |
12140 | finished: BOOLEAN ; | |
12141 | i, n, s : CARDINAL ; | |
12142 | BEGIN | |
12143 | REPEAT | |
12144 | n := NoOfItemsInList(UnresolvedConstructorType) ; | |
12145 | finished := TRUE ; | |
12146 | i := 1 ; | |
12147 | WHILE i<=n DO | |
12148 | s := GetItemFromList(UnresolvedConstructorType, i) ; | |
12149 | Assert(IsConstructor(s)) ; | |
12150 | IF CanResolveConstructor(s) | |
12151 | THEN | |
12152 | finished := FALSE ; | |
12153 | RemoveItemFromList(UnresolvedConstructorType, s) ; | |
12154 | i := n | |
12155 | END ; | |
12156 | INC(i) | |
12157 | END | |
12158 | UNTIL finished ; | |
12159 | CheckAllConstructorsResolved | |
12160 | END ResolveConstructorTypes ; | |
12161 | ||
12162 | ||
12163 | (* | |
12164 | SanityCheckParameters - | |
12165 | *) | |
12166 | ||
12167 | PROCEDURE SanityCheckParameters (sym: CARDINAL) ; | |
12168 | VAR | |
12169 | p : CARDINAL ; | |
12170 | i, n: CARDINAL ; | |
12171 | BEGIN | |
12172 | i := 1 ; | |
12173 | n := NoOfParam(sym) ; | |
12174 | WHILE i<=n DO | |
12175 | p := GetType(GetParam(sym, i)) ; | |
12176 | IF IsConst(p) | |
12177 | THEN | |
12178 | MetaError3('the {%1N} formal parameter in procedure {%2Dad} should have a type rather than a constant {%3Dad}', | |
12179 | i, sym, p) | |
12180 | END ; | |
12181 | INC(i) | |
12182 | END | |
12183 | END SanityCheckParameters ; | |
12184 | ||
12185 | ||
12186 | (* | |
12187 | SanityCheckArray - checks to see that an array has a correct subrange type. | |
12188 | *) | |
12189 | ||
12190 | PROCEDURE SanityCheckArray (sym: CARDINAL) ; | |
12191 | VAR | |
12192 | type : CARDINAL ; | |
12193 | subscript: CARDINAL ; | |
12194 | BEGIN | |
12195 | IF IsArray(sym) | |
12196 | THEN | |
12197 | subscript := GetArraySubscript(sym) ; | |
12198 | IF subscript#NulSym | |
12199 | THEN | |
12200 | type := SkipType(GetType(subscript)) ; | |
12201 | IF IsAModula2Type(type) | |
12202 | THEN | |
12203 | (* ok all is good *) | |
12204 | ELSE | |
12205 | MetaError2('the array {%1Dad} must be declared with a simpletype in the [..] component rather than a {%2d}', | |
12206 | sym, type) | |
12207 | END | |
12208 | END | |
12209 | END | |
12210 | END SanityCheckArray ; | |
12211 | ||
12212 | ||
12213 | (* | |
12214 | ForeachSymbolDo - foreach symbol, call, P(sym). | |
12215 | *) | |
12216 | ||
12217 | PROCEDURE ForeachSymbolDo (P: PerformOperation) ; | |
12218 | VAR | |
12219 | i, n: CARDINAL ; | |
12220 | BEGIN | |
12221 | i := Indexing.LowIndice(Symbols) ; | |
12222 | n := Indexing.HighIndice(Symbols) ; | |
12223 | WHILE i<=n DO | |
12224 | P(i) ; | |
12225 | INC(i) | |
12226 | END | |
12227 | END ForeachSymbolDo ; | |
12228 | ||
12229 | ||
12230 | (* | |
12231 | SanityCheckProcedure - check to see that procedure parameters do not use constants | |
12232 | instead of types in their formal parameter section. | |
12233 | *) | |
12234 | ||
12235 | PROCEDURE SanityCheckProcedure (sym: CARDINAL) ; | |
12236 | BEGIN | |
12237 | SanityCheckParameters(sym) | |
12238 | END SanityCheckProcedure ; | |
12239 | ||
12240 | ||
12241 | (* | |
12242 | SanityCheckModule - | |
12243 | *) | |
12244 | ||
12245 | PROCEDURE SanityCheckModule (sym: CARDINAL) ; | |
12246 | BEGIN | |
12247 | ForeachInnerModuleDo(sym, SanityCheckModule) ; | |
12248 | ForeachProcedureDo(sym, SanityCheckProcedure) ; | |
12249 | ForeachLocalSymDo(sym, SanityCheckArray) | |
12250 | END SanityCheckModule ; | |
12251 | ||
12252 | ||
12253 | (* | |
12254 | SanityCheckConstants - must only be called once all constants, types, procedures | |
12255 | have been declared. It checks to see that constants are | |
12256 | not used as procedure parameter types. | |
12257 | *) | |
12258 | ||
12259 | PROCEDURE SanityCheckConstants ; | |
12260 | BEGIN | |
12261 | ForeachModuleDo(SanityCheckModule) ; | |
12262 | ForeachSymbolDo(SanityCheckArray) | |
12263 | END SanityCheckConstants ; | |
12264 | ||
12265 | ||
12266 | (* | |
12267 | AddNameTo - adds Name, n, to tree, s. | |
12268 | *) | |
12269 | ||
12270 | PROCEDURE AddNameTo (s: SymbolTree; o: CARDINAL) ; | |
12271 | BEGIN | |
12272 | IF GetSymKey(s, GetSymName(o))=NulKey | |
12273 | THEN | |
12274 | PutSymKey(s, GetSymName(o), o) | |
12275 | END | |
12276 | END AddNameTo ; | |
12277 | ||
12278 | ||
12279 | (* | |
12280 | AddNameToScope - adds a Name, n, to the list of objects declared at the | |
12281 | current scope. | |
12282 | *) | |
12283 | ||
12284 | PROCEDURE AddNameToScope (n: Name) ; | |
12285 | VAR | |
12286 | pSym : PtrToSymbol ; | |
12287 | scope: CARDINAL ; | |
12288 | BEGIN | |
12289 | scope := GetCurrentScope() ; | |
12290 | pSym := GetPsym(scope) ; | |
12291 | WITH pSym^ DO | |
12292 | CASE SymbolType OF | |
12293 | ||
12294 | ProcedureSym: AddNameTo(Procedure.NamedObjects, MakeObject(n)) | | |
12295 | ModuleSym : AddNameTo(Module.NamedObjects, MakeObject(n)) | | |
12296 | DefImpSym : AddNameTo(DefImp.NamedObjects, MakeObject(n)) | |
12297 | ||
12298 | ELSE | |
12299 | InternalError ('expecting - DefImp') | |
12300 | END | |
12301 | END | |
12302 | END AddNameToScope ; | |
12303 | ||
12304 | ||
12305 | (* | |
12306 | AddNameToImportList - adds a Name, n, to the import list of the current | |
12307 | module. | |
12308 | *) | |
12309 | ||
12310 | PROCEDURE AddNameToImportList (n: Name) ; | |
12311 | VAR | |
12312 | pSym : PtrToSymbol ; | |
12313 | scope: CARDINAL ; | |
12314 | BEGIN | |
12315 | scope := GetCurrentScope() ; | |
12316 | pSym := GetPsym(scope) ; | |
12317 | WITH pSym^ DO | |
12318 | CASE SymbolType OF | |
12319 | ||
12320 | ModuleSym: AddNameTo(Module.NamedImports, MakeObject(n)) | | |
12321 | DefImpSym: AddNameTo(DefImp.NamedImports, MakeObject(n)) | |
12322 | ||
12323 | ELSE | |
12324 | InternalError ('expecting - DefImp or Module symbol') | |
12325 | END | |
12326 | END | |
12327 | END AddNameToImportList ; | |
12328 | ||
12329 | ||
12330 | VAR | |
12331 | ResolveModule: CARDINAL ; | |
12332 | ||
12333 | ||
12334 | (* | |
12335 | CollectSymbolFrom - | |
12336 | *) | |
12337 | ||
12338 | PROCEDURE CollectSymbolFrom (tok: CARDINAL; scope: CARDINAL; n: Name) : CARDINAL ; | |
12339 | VAR | |
12340 | n1 : Name ; | |
12341 | sym: CARDINAL ; | |
12342 | BEGIN | |
12343 | n1 := GetSymName (scope) ; | |
12344 | IF DebugUnknowns | |
12345 | THEN | |
12346 | printf2('declaring %a in %a', n, n1) | |
12347 | END ; | |
12348 | sym := CheckScopeForSym (scope, n) ; | |
12349 | IF sym=NulSym | |
12350 | THEN | |
12351 | sym := FetchUnknownFrom (tok, scope, n) | |
12352 | END ; | |
12353 | IF DebugUnknowns | |
12354 | THEN | |
12355 | printf1(' symbol created (%d)\n', sym) | |
12356 | END ; | |
12357 | RETURN( sym ) | |
12358 | END CollectSymbolFrom ; | |
12359 | ||
12360 | ||
12361 | (* | |
12362 | CollectUnknown - | |
12363 | *) | |
12364 | ||
12365 | PROCEDURE CollectUnknown (tok: CARDINAL; sym: CARDINAL; n: Name) : CARDINAL ; | |
12366 | VAR | |
12367 | pSym: PtrToSymbol ; | |
12368 | s : CARDINAL ; | |
12369 | BEGIN | |
89b58667 | 12370 | s := NulSym ; |
1eee94d3 GM |
12371 | IF IsModule (sym) OR IsDefImp (sym) |
12372 | THEN | |
12373 | RETURN( CollectSymbolFrom (tok, sym, n) ) | |
12374 | ELSIF IsProcedure(sym) | |
12375 | THEN | |
12376 | s := CheckScopeForSym (sym, n) ; | |
12377 | IF s=NulSym | |
12378 | THEN | |
12379 | pSym := GetPsym (sym) ; | |
12380 | WITH pSym^ DO | |
12381 | CASE SymbolType OF | |
12382 | ||
12383 | ProcedureSym: IF GetSymKey (Procedure.NamedObjects, n) # NulKey | |
12384 | THEN | |
12385 | RETURN( CollectSymbolFrom (tok, sym, n) ) | |
12386 | END | |
12387 | ||
12388 | ELSE | |
12389 | InternalError ('expecting - Procedure symbol') | |
12390 | END | |
12391 | END ; | |
12392 | s := CollectUnknown (tok, GetScope (sym), n) | |
89b58667 | 12393 | END |
d5e2694e | 12394 | END ; |
89b58667 | 12395 | RETURN( s ) |
1eee94d3 GM |
12396 | END CollectUnknown ; |
12397 | ||
12398 | ||
12399 | (* | |
12400 | ResolveImport - | |
12401 | *) | |
12402 | ||
12403 | PROCEDURE ResolveImport (o: WORD) ; | |
12404 | VAR | |
12405 | n1, n2: Name ; | |
12406 | tok : CARDINAL ; | |
12407 | sym : CARDINAL ; | |
12408 | BEGIN | |
12409 | IF DebugUnknowns | |
12410 | THEN | |
12411 | n1 := GetSymName(o) ; | |
12412 | printf1('attempting to find out where %a was declared\n', n1) ; | |
12413 | n1 := GetSymName(ResolveModule) ; | |
12414 | n2 := GetSymName(GetScope(ResolveModule)) ; | |
12415 | printf2('scope of module %a is %a\n', n1, n2) | |
12416 | END ; | |
12417 | tok := GetFirstUsed (o) ; | |
12418 | sym := CollectUnknown (tok, GetScope(ResolveModule), GetSymName(o)) ; | |
12419 | IF sym=NulSym | |
12420 | THEN | |
12421 | MetaError2('unknown symbol {%1Uad} found in import list of module {%2a}', | |
12422 | o, ResolveModule) | |
12423 | ELSE | |
12424 | AddSymToModuleScope(ResolveModule, sym) | |
12425 | END | |
12426 | END ResolveImport ; | |
12427 | ||
12428 | ||
12429 | (* | |
12430 | ResolveRelativeImport - | |
12431 | *) | |
12432 | ||
12433 | PROCEDURE ResolveRelativeImport (sym: CARDINAL) ; | |
12434 | VAR | |
12435 | pSym: PtrToSymbol ; | |
12436 | BEGIN | |
12437 | IF IsModule(sym) | |
12438 | THEN | |
12439 | ResolveModule := sym ; | |
12440 | pSym := GetPsym(sym) ; | |
12441 | WITH pSym^ DO | |
12442 | CASE SymbolType OF | |
12443 | ||
12444 | ModuleSym: ForeachNodeDo(Module.NamedImports, | |
12445 | ResolveImport) | |
12446 | ||
12447 | ELSE | |
12448 | InternalError ('expecting - Module symbol') | |
12449 | END | |
12450 | END | |
12451 | END ; | |
12452 | ForeachProcedureDo(sym, ResolveRelativeImport) ; | |
12453 | ForeachInnerModuleDo(sym, ResolveRelativeImport) | |
12454 | END ResolveRelativeImport ; | |
12455 | ||
12456 | ||
12457 | (* | |
12458 | ResolveImports - it examines the import list of all inner modules | |
12459 | and resolves all relative imports. | |
12460 | *) | |
12461 | ||
12462 | PROCEDURE ResolveImports ; | |
12463 | VAR | |
12464 | scope: CARDINAL ; | |
12465 | BEGIN | |
12466 | scope := GetCurrentScope() ; | |
12467 | IF DebugUnknowns | |
12468 | THEN | |
12469 | DisplayTrees(scope) | |
12470 | END ; | |
12471 | ForeachProcedureDo(scope, ResolveRelativeImport) ; | |
12472 | ForeachInnerModuleDo(scope, ResolveRelativeImport) | |
12473 | END ResolveImports ; | |
12474 | ||
12475 | ||
12476 | (* | |
12477 | GetScope - returns the declaration scope of the symbol. | |
12478 | *) | |
12479 | ||
12480 | PROCEDURE GetScope (Sym: CARDINAL) : CARDINAL ; | |
12481 | VAR | |
12482 | pSym: PtrToSymbol ; | |
12483 | BEGIN | |
12484 | pSym := GetPsym(Sym) ; | |
12485 | WITH pSym^ DO | |
12486 | CASE SymbolType OF | |
12487 | ||
12488 | ErrorSym : ErrorAbort0('') | | |
12489 | DefImpSym : RETURN( NulSym ) | | |
12490 | ModuleSym : RETURN( Module.Scope ) | | |
12491 | VarSym : RETURN( Var.Scope ) | | |
12492 | ProcedureSym : RETURN( Procedure.Scope ) | | |
12493 | ProcTypeSym : RETURN( ProcType.Scope ) | | |
12494 | RecordFieldSym : RETURN( RecordField.Scope ) | | |
12495 | VarientSym : RETURN( Varient.Scope ) | | |
12496 | VarientFieldSym : RETURN( VarientField.Scope ) | | |
12497 | EnumerationSym : RETURN( Enumeration.Scope ) | | |
12498 | EnumerationFieldSym: RETURN( EnumerationField.Scope ) | | |
12499 | SubrangeSym : RETURN( Subrange.Scope ) | | |
12500 | ArraySym : RETURN( Array.Scope ) | | |
12501 | TypeSym : RETURN( Type.Scope ) | | |
12502 | PointerSym : RETURN( Pointer.Scope ) | | |
12503 | RecordSym : RETURN( Record.Scope ) | | |
12504 | SetSym : RETURN( Set.Scope ) | | |
12505 | UnboundedSym : RETURN( Unbounded.Scope ) | | |
12506 | ConstLitSym : RETURN( ConstLit.Scope ) | | |
12507 | ConstStringSym : RETURN( ConstString.Scope ) | | |
12508 | ConstVarSym : RETURN( ConstVar.Scope ) | | |
12509 | PartialUnboundedSym: InternalError ('should not be requesting the scope of a PartialUnbounded symbol') | |
12510 | ||
12511 | ELSE | |
12512 | InternalError ('not implemented yet') | |
12513 | END | |
12514 | END | |
12515 | END GetScope ; | |
12516 | ||
12517 | ||
12518 | (* | |
12519 | GetModuleScope - returns the module scope of symbol, sym. | |
12520 | If sym was declared within a nested procedure | |
12521 | then return the module which defines the | |
12522 | procedure. | |
12523 | *) | |
12524 | ||
12525 | PROCEDURE GetModuleScope (sym: CARDINAL) : CARDINAL ; | |
12526 | VAR | |
12527 | mod: CARDINAL ; | |
12528 | BEGIN | |
12529 | mod := GetScope(sym) ; | |
12530 | WHILE (mod#NulSym) AND (NOT IsDefImp(mod)) AND (NOT IsModule(mod)) DO | |
12531 | mod := GetScope(mod) | |
12532 | END ; | |
12533 | RETURN( mod ) | |
12534 | END GetModuleScope ; | |
12535 | ||
12536 | ||
12537 | (* | |
12538 | GetProcedureScope - returns the innermost procedure (if any) | |
12539 | in which the symbol, sym, resides. | |
12540 | A module inside the procedure is skipped | |
12541 | over. | |
12542 | *) | |
12543 | ||
12544 | PROCEDURE GetProcedureScope (sym: CARDINAL) : CARDINAL ; | |
12545 | BEGIN | |
12546 | WHILE (sym#NulSym) AND (NOT IsProcedure(sym)) DO | |
12547 | sym := GetScope(sym) | |
12548 | END ; | |
12549 | IF (sym#NulSym) AND IsProcedure(sym) | |
12550 | THEN | |
12551 | RETURN( sym ) | |
12552 | ELSE | |
12553 | RETURN( NulSym ) | |
12554 | END | |
12555 | END GetProcedureScope ; | |
12556 | ||
12557 | ||
12558 | (* | |
12559 | IsModuleWithinProcedure - returns TRUE if module, sym, is | |
12560 | inside a procedure. | |
12561 | *) | |
12562 | ||
12563 | PROCEDURE IsModuleWithinProcedure (sym: CARDINAL) : BOOLEAN ; | |
12564 | BEGIN | |
12565 | RETURN( GetProcedureScope(sym)#NulSym ) | |
12566 | END IsModuleWithinProcedure ; | |
12567 | ||
12568 | ||
12569 | (* | |
12570 | GetParent - returns the parent of symbol, Sym. | |
12571 | *) | |
12572 | ||
12573 | PROCEDURE GetParent (Sym: CARDINAL) : CARDINAL ; | |
12574 | VAR | |
12575 | pSym: PtrToSymbol ; | |
12576 | BEGIN | |
12577 | pSym := GetPsym(Sym) ; | |
12578 | WITH pSym^ DO | |
12579 | CASE SymbolType OF | |
12580 | ||
12581 | ErrorSym : ErrorAbort0('') | | |
12582 | VarientSym : RETURN( Varient.Parent ) | | |
12583 | VarientFieldSym : RETURN( VarientField.Parent ) | | |
12584 | RecordFieldSym : RETURN( RecordField.Parent ) | | |
12585 | EnumerationFieldSym: RETURN( EnumerationField.Type ) | |
12586 | ||
12587 | ELSE | |
12588 | InternalError ('not implemented yet') | |
12589 | END | |
12590 | END | |
12591 | END GetParent ; | |
12592 | ||
12593 | ||
12594 | (* | |
12595 | IsRecordField - returns true if Sym is a record field. | |
12596 | *) | |
12597 | ||
12598 | PROCEDURE IsRecordField (Sym: CARDINAL) : BOOLEAN ; | |
12599 | VAR | |
12600 | pSym: PtrToSymbol ; | |
12601 | BEGIN | |
12602 | pSym := GetPsym(Sym) ; | |
12603 | RETURN( pSym^.SymbolType=RecordFieldSym ) | |
12604 | END IsRecordField ; | |
12605 | ||
12606 | ||
12607 | (* | |
12608 | MakeProcType - returns a procedure type symbol with ProcTypeName. | |
12609 | *) | |
12610 | ||
12611 | PROCEDURE MakeProcType (tok: CARDINAL; ProcTypeName: Name) : CARDINAL ; | |
12612 | VAR | |
12613 | pSym : PtrToSymbol ; | |
12614 | oaf, sym: CARDINAL ; | |
12615 | BEGIN | |
12616 | sym := HandleHiddenOrDeclare (tok, ProcTypeName, oaf) ; | |
12617 | IF NOT IsError(sym) | |
12618 | THEN | |
12619 | pSym := GetPsym(sym) ; | |
12620 | WITH pSym^ DO | |
12621 | SymbolType := ProcTypeSym ; | |
12622 | CASE SymbolType OF | |
12623 | ||
12624 | ProcTypeSym: ProcType.ReturnType := NulSym ; | |
12625 | ProcType.name := ProcTypeName ; | |
12626 | InitList(ProcType.ListOfParam) ; | |
12627 | ProcType.HasVarArgs := FALSE ; (* Does this proc type use ... ? *) | |
12628 | ProcType.HasOptArg := FALSE ; (* Does this proc type use [ ] ? *) | |
12629 | ProcType.OptArgInit := NulSym ; (* The optarg initial value. *) | |
12630 | ProcType.ReturnOptional := FALSE ; (* Is the return value optional? *) | |
12631 | ProcType.Scope := GetCurrentScope() ; | |
12632 | (* scope of procedure. *) | |
12633 | ProcType.Size := InitValue() ; | |
12634 | ProcType.TotalParamSize := InitValue() ; (* size of all parameters *) | |
12635 | ProcType.oafamily := oaf ; (* The oa family for this symbol *) | |
12636 | InitWhereDeclaredTok(tok, ProcType.At) (* Declared here *) | |
12637 | ||
12638 | ELSE | |
12639 | InternalError ('expecting ProcType symbol') | |
12640 | END | |
12641 | END | |
12642 | END ; | |
12643 | ForeachOAFamily(oaf, doFillInOAFamily) ; | |
12644 | RETURN( sym ) | |
12645 | END MakeProcType ; | |
12646 | ||
12647 | ||
12648 | (* | |
12649 | PutProcTypeParam - Places a Non VAR parameter ParamName with type | |
12650 | ParamType into ProcType Sym. | |
12651 | *) | |
12652 | ||
12653 | PROCEDURE PutProcTypeParam (Sym: CARDINAL; | |
12654 | ParamType: CARDINAL; isUnbounded: BOOLEAN) ; | |
12655 | VAR | |
12656 | pSym : PtrToSymbol ; | |
12657 | ParSym: CARDINAL ; | |
12658 | BEGIN | |
12659 | NewSym(ParSym) ; | |
12660 | pSym := GetPsym(ParSym) ; | |
12661 | WITH pSym^ DO | |
12662 | SymbolType := ParamSym ; | |
12663 | WITH Param DO | |
12664 | name := NulName ; | |
12665 | Type := ParamType ; | |
12666 | IsUnbounded := isUnbounded ; | |
12667 | ShadowVar := NulSym ; | |
12668 | InitWhereDeclared(At) | |
12669 | END | |
12670 | END ; | |
12671 | AddParameter(Sym, ParSym) | |
12672 | END PutProcTypeParam ; | |
12673 | ||
12674 | ||
12675 | (* | |
12676 | PutProcTypeVarParam - Places a Non VAR parameter ParamName with type | |
12677 | ParamType into ProcType Sym. | |
12678 | *) | |
12679 | ||
12680 | PROCEDURE PutProcTypeVarParam (Sym: CARDINAL; | |
12681 | ParamType: CARDINAL; isUnbounded: BOOLEAN) ; | |
12682 | VAR | |
12683 | pSym : PtrToSymbol ; | |
12684 | ParSym: CARDINAL ; | |
12685 | BEGIN | |
12686 | NewSym(ParSym) ; | |
12687 | pSym := GetPsym(ParSym) ; | |
12688 | WITH pSym^ DO | |
12689 | SymbolType := VarParamSym ; | |
12690 | WITH Param DO | |
12691 | name := NulName ; | |
12692 | Type := ParamType ; | |
12693 | IsUnbounded := isUnbounded ; | |
12694 | ShadowVar := NulSym ; | |
12695 | InitWhereDeclared(At) | |
12696 | END | |
12697 | END ; | |
12698 | AddParameter(Sym, ParSym) | |
12699 | END PutProcTypeVarParam ; | |
12700 | ||
12701 | ||
12702 | (* | |
12703 | PutProcedureReachable - Sets the procedure, Sym, to be reachable by the | |
12704 | main Module. | |
12705 | *) | |
12706 | ||
12707 | PROCEDURE PutProcedureReachable (Sym: CARDINAL) ; | |
12708 | VAR | |
12709 | pSym: PtrToSymbol ; | |
12710 | BEGIN | |
12711 | pSym := GetPsym(Sym) ; | |
12712 | WITH pSym^ DO | |
12713 | CASE SymbolType OF | |
12714 | ||
12715 | ErrorSym: | | |
12716 | ProcedureSym: Procedure.Reachable := TRUE | |
12717 | ||
12718 | ELSE | |
12719 | InternalError ('expecting Procedure symbol') | |
12720 | END | |
12721 | END | |
12722 | END PutProcedureReachable ; | |
12723 | ||
12724 | ||
12725 | (* | |
12726 | PutModuleStartQuad - Places QuadNumber into the Module symbol, Sym. | |
12727 | QuadNumber is the start quad of Module, | |
12728 | Sym. | |
12729 | *) | |
12730 | ||
12731 | PROCEDURE PutModuleStartQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12732 | VAR | |
12733 | pSym: PtrToSymbol ; | |
12734 | BEGIN | |
12735 | pSym := GetPsym(Sym) ; | |
12736 | WITH pSym^ DO | |
12737 | CASE SymbolType OF | |
12738 | ||
12739 | ModuleSym: Module.StartQuad := QuadNumber | | |
12740 | DefImpSym: DefImp.StartQuad := QuadNumber | |
12741 | ||
12742 | ELSE | |
12743 | InternalError ('expecting a Module or DefImp symbol') | |
12744 | END | |
12745 | END | |
12746 | END PutModuleStartQuad ; | |
12747 | ||
12748 | ||
12749 | (* | |
12750 | PutModuleEndQuad - Places QuadNumber into the Module symbol, Sym. | |
12751 | QuadNumber is the end quad of Module, | |
12752 | Sym. | |
12753 | *) | |
12754 | ||
12755 | PROCEDURE PutModuleEndQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12756 | VAR | |
12757 | pSym: PtrToSymbol ; | |
12758 | BEGIN | |
12759 | pSym := GetPsym(Sym) ; | |
12760 | WITH pSym^ DO | |
12761 | CASE SymbolType OF | |
12762 | ||
12763 | ModuleSym: Module.EndQuad := QuadNumber | | |
12764 | DefImpSym: DefImp.EndQuad := QuadNumber | |
12765 | ||
12766 | ELSE | |
12767 | InternalError ('expecting a Module or DefImp symbol') | |
12768 | END | |
12769 | END | |
12770 | END PutModuleEndQuad ; | |
12771 | ||
12772 | ||
12773 | (* | |
12774 | PutModuleFinallyStartQuad - Places QuadNumber into the Module symbol, Sym. | |
12775 | QuadNumber is the finally start quad of | |
12776 | Module, Sym. | |
12777 | *) | |
12778 | ||
12779 | PROCEDURE PutModuleFinallyStartQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12780 | VAR | |
12781 | pSym: PtrToSymbol ; | |
12782 | BEGIN | |
12783 | pSym := GetPsym(Sym) ; | |
12784 | WITH pSym^ DO | |
12785 | CASE SymbolType OF | |
12786 | ||
12787 | ModuleSym: Module.StartFinishQuad := QuadNumber | | |
12788 | DefImpSym: DefImp.StartFinishQuad := QuadNumber | |
12789 | ||
12790 | ELSE | |
12791 | InternalError ('expecting a Module or DefImp symbol') | |
12792 | END | |
12793 | END | |
12794 | END PutModuleFinallyStartQuad ; | |
12795 | ||
12796 | ||
12797 | (* | |
12798 | PutModuleFinallyEndQuad - Places QuadNumber into the Module symbol, Sym. | |
12799 | QuadNumber is the end quad of the finally block | |
12800 | in Module, Sym. | |
12801 | *) | |
12802 | ||
12803 | PROCEDURE PutModuleFinallyEndQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12804 | VAR | |
12805 | pSym: PtrToSymbol ; | |
12806 | BEGIN | |
12807 | pSym := GetPsym(Sym) ; | |
12808 | WITH pSym^ DO | |
12809 | CASE SymbolType OF | |
12810 | ||
12811 | ModuleSym: Module.EndFinishQuad := QuadNumber | | |
12812 | DefImpSym: DefImp.EndFinishQuad := QuadNumber | |
12813 | ||
12814 | ELSE | |
12815 | InternalError ('expecting a Module or DefImp symbol') | |
12816 | END | |
12817 | END | |
12818 | END PutModuleFinallyEndQuad ; | |
12819 | ||
12820 | ||
12821 | (* | |
12822 | GetModuleQuads - Returns, StartInit EndInit StartFinish EndFinish, | |
12823 | Quads of a Module, Sym. | |
12824 | Start and End represent the initialization code | |
12825 | of the Module, Sym. | |
12826 | *) | |
12827 | ||
12828 | PROCEDURE GetModuleQuads (Sym: CARDINAL; | |
12829 | VAR StartInit, EndInit, | |
12830 | StartFinish, EndFinish: CARDINAL) ; | |
12831 | VAR | |
12832 | pSym: PtrToSymbol ; | |
12833 | BEGIN | |
12834 | pSym := GetPsym(Sym) ; | |
12835 | WITH pSym^ DO | |
12836 | CASE SymbolType OF | |
12837 | ||
12838 | ModuleSym: WITH Module DO | |
12839 | StartInit := StartQuad ; | |
12840 | EndInit := EndQuad ; | |
12841 | StartFinish := StartFinishQuad ; | |
12842 | EndFinish := EndFinishQuad | |
12843 | END | | |
12844 | DefImpSym: WITH DefImp DO | |
12845 | StartInit := StartQuad ; | |
12846 | EndInit := EndQuad ; | |
12847 | StartFinish := StartFinishQuad ; | |
12848 | EndFinish := EndFinishQuad | |
12849 | END | |
12850 | ||
12851 | ELSE | |
12852 | InternalError ('expecting a Module or DefImp symbol') | |
12853 | END | |
12854 | END | |
12855 | END GetModuleQuads ; | |
12856 | ||
12857 | ||
12858 | (* | |
12859 | PutModuleFinallyFunction - Places Tree, finally, into the Module symbol, Sym. | |
12860 | *) | |
12861 | ||
12862 | PROCEDURE PutModuleFinallyFunction (Sym: CARDINAL; finally: Tree) ; | |
12863 | VAR | |
12864 | pSym: PtrToSymbol ; | |
12865 | BEGIN | |
12866 | pSym := GetPsym(Sym) ; | |
12867 | WITH pSym^ DO | |
12868 | CASE SymbolType OF | |
12869 | ||
12870 | ModuleSym: Module.FinallyFunction := finally | | |
12871 | DefImpSym: DefImp.FinallyFunction := finally | |
12872 | ||
12873 | ELSE | |
12874 | InternalError ('expecting a Module or DefImp symbol') | |
12875 | END | |
12876 | END | |
12877 | END PutModuleFinallyFunction ; | |
12878 | ||
12879 | ||
12880 | (* | |
12881 | GetModuleFinallyFunction - returns the finally tree from the Module symbol, Sym. | |
12882 | *) | |
12883 | ||
12884 | PROCEDURE GetModuleFinallyFunction (Sym: CARDINAL) : Tree ; | |
12885 | VAR | |
12886 | pSym: PtrToSymbol ; | |
12887 | BEGIN | |
12888 | pSym := GetPsym(Sym) ; | |
12889 | WITH pSym^ DO | |
12890 | CASE SymbolType OF | |
12891 | ||
12892 | ModuleSym: RETURN( Module.FinallyFunction) | | |
12893 | DefImpSym: RETURN( DefImp.FinallyFunction) | |
12894 | ||
12895 | ELSE | |
12896 | InternalError ('expecting a Module or DefImp symbol') | |
12897 | END | |
12898 | END | |
12899 | END GetModuleFinallyFunction ; | |
12900 | ||
12901 | ||
12902 | (* | |
12903 | PutProcedureScopeQuad - Places QuadNumber into the Procedure symbol, Sym. | |
12904 | QuadNumber is the start quad of scope for procedure, | |
12905 | Sym. | |
12906 | *) | |
12907 | ||
12908 | PROCEDURE PutProcedureScopeQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12909 | VAR | |
12910 | pSym: PtrToSymbol ; | |
12911 | BEGIN | |
12912 | pSym := GetPsym(Sym) ; | |
12913 | WITH pSym^ DO | |
12914 | CASE SymbolType OF | |
12915 | ||
12916 | ProcedureSym: Procedure.ScopeQuad := QuadNumber | |
12917 | ||
12918 | ELSE | |
12919 | InternalError ('expecting a Procedure symbol') | |
12920 | END | |
12921 | END | |
12922 | END PutProcedureScopeQuad ; | |
12923 | ||
12924 | ||
12925 | (* | |
12926 | PutProcedureStartQuad - Places QuadNumber into the Procedure symbol, Sym. | |
12927 | QuadNumber is the start quad of procedure, | |
12928 | Sym. | |
12929 | *) | |
12930 | ||
12931 | PROCEDURE PutProcedureStartQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12932 | VAR | |
12933 | pSym: PtrToSymbol ; | |
12934 | BEGIN | |
12935 | pSym := GetPsym(Sym) ; | |
12936 | WITH pSym^ DO | |
12937 | CASE SymbolType OF | |
12938 | ||
12939 | ProcedureSym: Procedure.StartQuad := QuadNumber | |
12940 | ||
12941 | ELSE | |
12942 | InternalError ('expecting a Procedure symbol') | |
12943 | END | |
12944 | END | |
12945 | END PutProcedureStartQuad ; | |
12946 | ||
12947 | ||
12948 | (* | |
12949 | PutProcedureEndQuad - Places QuadNumber into the Procedure symbol, Sym. | |
12950 | QuadNumber is the end quad of procedure, | |
12951 | Sym. | |
12952 | *) | |
12953 | ||
12954 | PROCEDURE PutProcedureEndQuad (Sym: CARDINAL; QuadNumber: CARDINAL) ; | |
12955 | VAR | |
12956 | pSym: PtrToSymbol ; | |
12957 | BEGIN | |
12958 | pSym := GetPsym(Sym) ; | |
12959 | WITH pSym^ DO | |
12960 | CASE SymbolType OF | |
12961 | ||
12962 | ProcedureSym: Procedure.EndQuad := QuadNumber | |
12963 | ||
12964 | ELSE | |
12965 | InternalError ('expecting a Procedure symbol') | |
12966 | END | |
12967 | END | |
12968 | END PutProcedureEndQuad ; | |
12969 | ||
12970 | ||
12971 | (* | |
12972 | GetProcedureQuads - Returns, Start and End, Quads of a procedure, Sym. | |
12973 | *) | |
12974 | ||
12975 | PROCEDURE GetProcedureQuads (Sym: CARDINAL; VAR scope, start, end: CARDINAL) ; | |
12976 | VAR | |
12977 | pSym: PtrToSymbol ; | |
12978 | BEGIN | |
12979 | pSym := GetPsym(Sym) ; | |
12980 | WITH pSym^ DO | |
12981 | CASE SymbolType OF | |
12982 | ||
12983 | ProcedureSym: WITH Procedure DO | |
12984 | scope := ScopeQuad ; | |
12985 | start := StartQuad ; | |
12986 | end := EndQuad | |
12987 | END | |
12988 | ||
12989 | ELSE | |
12990 | InternalError ('expecting a Procedure symbol') | |
12991 | END | |
12992 | END | |
12993 | END GetProcedureQuads ; | |
12994 | ||
12995 | ||
12996 | (* | |
12997 | GetReadQuads - assigns Start and End to the beginning and end of | |
12998 | symbol, Sym, read history usage. | |
12999 | *) | |
13000 | ||
13001 | PROCEDURE GetReadQuads (Sym: CARDINAL; m: ModeOfAddr; | |
13002 | VAR Start, End: CARDINAL) ; | |
13003 | BEGIN | |
13004 | GetReadLimitQuads(Sym, m, 0, 0, Start, End) | |
13005 | END GetReadQuads ; | |
13006 | ||
13007 | ||
13008 | (* | |
13009 | GetWriteQuads - assigns Start and End to the beginning and end of | |
13010 | symbol, Sym, usage. | |
13011 | *) | |
13012 | ||
13013 | PROCEDURE GetWriteQuads (Sym: CARDINAL; m: ModeOfAddr; | |
13014 | VAR Start, End: CARDINAL) ; | |
13015 | BEGIN | |
13016 | GetWriteLimitQuads(Sym, m, 0, 0, Start, End) | |
13017 | END GetWriteQuads ; | |
13018 | ||
13019 | ||
13020 | (* | |
13021 | PutProcedureBegin - assigns begin as the token number matching the | |
13022 | procedure BEGIN. | |
13023 | *) | |
13024 | ||
13025 | PROCEDURE PutProcedureBegin (Sym: CARDINAL; begin: CARDINAL) ; | |
13026 | VAR | |
13027 | pSym: PtrToSymbol ; | |
13028 | BEGIN | |
13029 | pSym := GetPsym(Sym) ; | |
13030 | WITH pSym^ DO | |
13031 | CASE SymbolType OF | |
13032 | ||
13033 | ProcedureSym: Procedure.Begin := begin | |
13034 | ||
13035 | ELSE | |
13036 | InternalError ('expecting a Procedure symbol') | |
13037 | END | |
13038 | END | |
13039 | END PutProcedureBegin ; | |
13040 | ||
13041 | ||
13042 | (* | |
13043 | PutProcedureEnd - assigns end as the token number matching the | |
13044 | procedure END. | |
13045 | *) | |
13046 | ||
13047 | PROCEDURE PutProcedureEnd (Sym: CARDINAL; end: CARDINAL) ; | |
13048 | VAR | |
13049 | pSym: PtrToSymbol ; | |
13050 | BEGIN | |
13051 | pSym := GetPsym(Sym) ; | |
13052 | WITH pSym^ DO | |
13053 | CASE SymbolType OF | |
13054 | ||
13055 | ProcedureSym: Procedure.End := end | |
13056 | ||
13057 | ELSE | |
13058 | InternalError ('expecting a Procedure symbol') | |
13059 | END | |
13060 | END | |
13061 | END PutProcedureEnd ; | |
13062 | ||
13063 | ||
13064 | (* | |
13065 | GetProcedureBeginEnd - assigns, begin, end, to the stored token values. | |
13066 | *) | |
13067 | ||
13068 | PROCEDURE GetProcedureBeginEnd (Sym: CARDINAL; VAR begin, end: CARDINAL) ; | |
13069 | VAR | |
13070 | pSym: PtrToSymbol ; | |
13071 | BEGIN | |
13072 | pSym := GetPsym(Sym) ; | |
13073 | WITH pSym^ DO | |
13074 | CASE SymbolType OF | |
13075 | ||
13076 | ProcedureSym: begin := Procedure.Begin ; | |
13077 | end := Procedure.End | |
13078 | ||
13079 | ELSE | |
13080 | InternalError ('expecting a Procedure symbol') | |
13081 | END | |
13082 | END | |
13083 | END GetProcedureBeginEnd ; | |
13084 | ||
13085 | ||
13086 | (* | |
13087 | Max - | |
13088 | *) | |
13089 | ||
13090 | PROCEDURE Max (a, b: CARDINAL) : CARDINAL ; | |
13091 | BEGIN | |
13092 | IF a>b | |
13093 | THEN | |
13094 | RETURN( a ) | |
13095 | ELSE | |
13096 | RETURN( b ) | |
13097 | END | |
13098 | END Max ; | |
13099 | ||
13100 | ||
13101 | (* | |
13102 | Min - | |
13103 | *) | |
13104 | ||
13105 | PROCEDURE Min (a, b: CARDINAL) : CARDINAL ; | |
13106 | BEGIN | |
13107 | IF a<b | |
13108 | THEN | |
13109 | RETURN( a ) | |
13110 | ELSE | |
13111 | RETURN( b ) | |
13112 | END | |
13113 | END Min ; | |
13114 | ||
13115 | ||
13116 | (* | |
13117 | GetQuads - assigns Start and End to the beginning and end of | |
13118 | symbol, Sym, usage. | |
13119 | *) | |
13120 | ||
13121 | PROCEDURE GetQuads (Sym: CARDINAL; m: ModeOfAddr; VAR Start, End: CARDINAL) ; | |
13122 | VAR | |
13123 | StartRead, EndRead, | |
13124 | StartWrite, EndWrite: CARDINAL ; | |
13125 | BEGIN | |
13126 | GetReadQuads(Sym, m, StartRead, EndRead) ; | |
13127 | GetWriteQuads(Sym, m, StartWrite, EndWrite) ; | |
13128 | IF StartRead=0 | |
13129 | THEN | |
13130 | Start := StartWrite | |
13131 | ELSIF StartWrite=0 | |
13132 | THEN | |
13133 | Start := StartRead | |
13134 | ELSE | |
13135 | Start := Min(StartRead, StartWrite) | |
13136 | END ; | |
13137 | IF EndRead=0 | |
13138 | THEN | |
13139 | End := EndWrite | |
13140 | ELSIF EndWrite=0 | |
13141 | THEN | |
13142 | End := EndRead | |
13143 | ELSE | |
13144 | End := Max(EndRead, EndWrite) | |
13145 | END | |
13146 | END GetQuads ; | |
13147 | ||
13148 | ||
13149 | (* | |
13150 | PutReadQuad - places Quad into the list of symbol usage. | |
13151 | *) | |
13152 | ||
13153 | PROCEDURE PutReadQuad (Sym: CARDINAL; m: ModeOfAddr; Quad: CARDINAL) ; | |
13154 | VAR | |
13155 | pSym: PtrToSymbol ; | |
13156 | BEGIN | |
13157 | pSym := GetPsym(Sym) ; | |
13158 | WITH pSym^ DO | |
13159 | CASE SymbolType OF | |
13160 | ||
13161 | VarSym: IncludeItemIntoList(Var.ReadUsageList[m], Quad) | |
13162 | ||
13163 | ELSE | |
13164 | InternalError ('expecting a Var symbol') | |
13165 | END | |
13166 | END | |
13167 | END PutReadQuad ; | |
13168 | ||
13169 | ||
13170 | (* | |
13171 | RemoveReadQuad - places Quad into the list of symbol usage. | |
13172 | *) | |
13173 | ||
13174 | PROCEDURE RemoveReadQuad (Sym: CARDINAL; m: ModeOfAddr; Quad: CARDINAL) ; | |
13175 | VAR | |
13176 | pSym: PtrToSymbol ; | |
13177 | BEGIN | |
13178 | pSym := GetPsym(Sym) ; | |
13179 | WITH pSym^ DO | |
13180 | CASE SymbolType OF | |
13181 | ||
13182 | VarSym: RemoveItemFromList(Var.ReadUsageList[m], Quad) | |
13183 | ||
13184 | ELSE | |
13185 | InternalError ('expecting a Var symbol') | |
13186 | END | |
13187 | END | |
13188 | END RemoveReadQuad ; | |
13189 | ||
13190 | ||
13191 | (* | |
13192 | PutWriteQuad - places Quad into the list of symbol usage. | |
13193 | *) | |
13194 | ||
13195 | PROCEDURE PutWriteQuad (Sym: CARDINAL; m: ModeOfAddr; Quad: CARDINAL) ; | |
13196 | VAR | |
13197 | pSym: PtrToSymbol ; | |
13198 | BEGIN | |
13199 | pSym := GetPsym(Sym) ; | |
13200 | WITH pSym^ DO | |
13201 | CASE SymbolType OF | |
13202 | ||
13203 | VarSym: IncludeItemIntoList(Var.WriteUsageList[m], Quad) | |
13204 | ||
13205 | ELSE | |
13206 | InternalError ('expecting a Var symbol') | |
13207 | END | |
13208 | END | |
13209 | END PutWriteQuad ; | |
13210 | ||
13211 | ||
13212 | (* | |
13213 | RemoveWriteQuad - places Quad into the list of symbol usage. | |
13214 | *) | |
13215 | ||
13216 | PROCEDURE RemoveWriteQuad (Sym: CARDINAL; m: ModeOfAddr; Quad: CARDINAL) ; | |
13217 | VAR | |
13218 | pSym: PtrToSymbol ; | |
13219 | BEGIN | |
13220 | pSym := GetPsym(Sym) ; | |
13221 | WITH pSym^ DO | |
13222 | CASE SymbolType OF | |
13223 | ||
13224 | VarSym: RemoveItemFromList(Var.WriteUsageList[m], Quad) | |
13225 | ||
13226 | ELSE | |
13227 | InternalError ('expecting a Var symbol') | |
13228 | END | |
13229 | END | |
13230 | END RemoveWriteQuad ; | |
13231 | ||
13232 | ||
13233 | (* | |
13234 | DoFindLimits - assigns, Start, and, End, to the start and end | |
13235 | limits contained in the list, l. It ensures that | |
13236 | Start and End are within StartLimit..EndLimit. | |
13237 | If StartLimit or EndLimit are 0 then Start is | |
13238 | is set to the first value and End to the last. | |
13239 | *) | |
13240 | ||
13241 | PROCEDURE DoFindLimits (StartLimit, EndLimit: CARDINAL; | |
13242 | VAR Start, End: CARDINAL; l: List) ; | |
13243 | VAR | |
13244 | i, j, n: CARDINAL ; | |
13245 | BEGIN | |
13246 | End := 0 ; | |
13247 | Start := 0 ; | |
13248 | i := 1 ; | |
13249 | n := NoOfItemsInList(l) ; | |
13250 | WHILE i<=n DO | |
13251 | j := GetItemFromList(l, i) ; | |
13252 | IF (j>End) AND (j>=StartLimit) AND ((j<=EndLimit) OR (EndLimit=0)) | |
13253 | THEN | |
13254 | End := j | |
13255 | END ; | |
13256 | IF ((Start=0) OR (j<Start)) AND (j#0) AND (j>=StartLimit) AND | |
13257 | ((j<=EndLimit) OR (EndLimit=0)) | |
13258 | THEN | |
13259 | Start := j | |
13260 | END ; | |
13261 | INC(i) | |
13262 | END | |
13263 | END DoFindLimits ; | |
13264 | ||
13265 | ||
13266 | (* | |
13267 | GetReadLimitQuads - returns Start and End which have been assigned | |
13268 | the start and end of when the symbol was read | |
13269 | to within: StartLimit..EndLimit. | |
13270 | *) | |
13271 | ||
13272 | PROCEDURE GetReadLimitQuads (Sym: CARDINAL; m: ModeOfAddr; | |
13273 | StartLimit, EndLimit: CARDINAL; | |
13274 | VAR Start, End: CARDINAL) ; | |
13275 | VAR | |
13276 | pSym: PtrToSymbol ; | |
13277 | BEGIN | |
13278 | pSym := GetPsym(Sym) ; | |
13279 | WITH pSym^ DO | |
13280 | CASE SymbolType OF | |
13281 | ||
13282 | VarSym: DoFindLimits(StartLimit, EndLimit, Start, End, | |
13283 | Var.ReadUsageList[m]) | |
13284 | ||
13285 | ELSE | |
13286 | InternalError ('expecting a Var symbol') | |
13287 | END | |
13288 | END | |
13289 | END GetReadLimitQuads ; | |
13290 | ||
13291 | ||
13292 | (* | |
13293 | GetWriteLimitQuads - returns Start and End which have been assigned | |
13294 | the start and end of when the symbol was written | |
13295 | to within: StartLimit..EndLimit. | |
13296 | *) | |
13297 | ||
13298 | PROCEDURE GetWriteLimitQuads (Sym: CARDINAL; m: ModeOfAddr; | |
13299 | StartLimit, EndLimit: CARDINAL; | |
13300 | VAR Start, End: CARDINAL) ; | |
13301 | VAR | |
13302 | pSym: PtrToSymbol ; | |
13303 | BEGIN | |
13304 | pSym := GetPsym(Sym) ; | |
13305 | WITH pSym^ DO | |
13306 | CASE SymbolType OF | |
13307 | ||
13308 | VarSym : DoFindLimits(StartLimit, EndLimit, Start, End, | |
13309 | Var.WriteUsageList[m]) | |
13310 | ||
13311 | ELSE | |
13312 | InternalError ('expecting a Var symbol') | |
13313 | END | |
13314 | END | |
13315 | END GetWriteLimitQuads ; | |
13316 | ||
13317 | ||
13318 | (* | |
13319 | GetNthProcedure - Returns the Nth procedure in Module, Sym. | |
13320 | *) | |
13321 | ||
13322 | PROCEDURE GetNthProcedure (Sym: CARDINAL; n: CARDINAL) : CARDINAL ; | |
13323 | VAR | |
13324 | pSym: PtrToSymbol ; | |
13325 | BEGIN | |
13326 | pSym := GetPsym(Sym) ; | |
13327 | WITH pSym^ DO | |
13328 | CASE SymbolType OF | |
13329 | ||
13330 | DefImpSym: RETURN( GetItemFromList(DefImp.ListOfProcs, n) ) | | |
13331 | ModuleSym: RETURN( GetItemFromList(Module.ListOfProcs, n) ) | |
13332 | ||
13333 | ELSE | |
13334 | InternalError ('expecting a DefImp or Module symbol') | |
13335 | END | |
13336 | END | |
13337 | END GetNthProcedure ; | |
13338 | ||
13339 | ||
13340 | (* | |
13341 | GetDeclaredDefinition - returns the token where this symbol | |
13342 | was declared in the definition module. | |
13343 | *) | |
13344 | ||
13345 | PROCEDURE GetDeclaredDefinition (Sym: CARDINAL) : CARDINAL ; | |
13346 | VAR | |
13347 | pSym: PtrToSymbol ; | |
13348 | BEGIN | |
13349 | pSym := GetPsym(Sym) ; | |
13350 | WITH pSym^ DO | |
13351 | CASE SymbolType OF | |
13352 | ||
13353 | ErrorSym : RETURN( Error.At.DefDeclared ) | | |
13354 | ObjectSym : RETURN( Object.At.DefDeclared ) | | |
13355 | VarientSym : RETURN( Varient.At.DefDeclared ) | | |
13356 | RecordSym : RETURN( Record.At.DefDeclared ) | | |
13357 | SubrangeSym : RETURN( Subrange.At.DefDeclared ) | | |
13358 | EnumerationSym : RETURN( Enumeration.At.DefDeclared ) | | |
13359 | ArraySym : RETURN( Array.At.DefDeclared ) | | |
13360 | SubscriptSym : RETURN( Subscript.At.DefDeclared ) | | |
13361 | UnboundedSym : RETURN( Unbounded.At.DefDeclared ) | | |
13362 | ProcedureSym : RETURN( Procedure.At.DefDeclared ) | | |
13363 | ProcTypeSym : RETURN( ProcType.At.DefDeclared ) | | |
13364 | ParamSym : RETURN( Param.At.DefDeclared ) | | |
13365 | VarParamSym : RETURN( VarParam.At.DefDeclared ) | | |
13366 | ConstStringSym : RETURN( ConstString.At.DefDeclared ) | | |
13367 | ConstLitSym : RETURN( ConstLit.At.DefDeclared ) | | |
13368 | ConstVarSym : RETURN( ConstVar.At.DefDeclared ) | | |
13369 | VarSym : RETURN( Var.At.DefDeclared ) | | |
13370 | TypeSym : RETURN( Type.At.DefDeclared ) | | |
13371 | PointerSym : RETURN( Pointer.At.DefDeclared ) | | |
13372 | RecordFieldSym : RETURN( RecordField.At.DefDeclared ) | | |
13373 | VarientFieldSym : RETURN( VarientField.At.DefDeclared ) | | |
13374 | EnumerationFieldSym: RETURN( EnumerationField.At.DefDeclared ) | | |
13375 | SetSym : RETURN( Set.At.DefDeclared ) | | |
13376 | DefImpSym : RETURN( DefImp.At.DefDeclared ) | | |
13377 | ModuleSym : RETURN( Module.At.DefDeclared ) | | |
13378 | UndefinedSym : RETURN( GetFirstUsed(Sym) ) | | |
13379 | ImportSym : RETURN( Import.at.DefDeclared ) | | |
13380 | ImportStatementSym : RETURN( ImportStatement.at.DefDeclared ) | | |
13381 | PartialUnboundedSym: RETURN( GetDeclaredDefinition(PartialUnbounded.Type) ) | |
13382 | ||
13383 | ELSE | |
13384 | InternalError ('not expecting this type of symbol') | |
13385 | END | |
13386 | END | |
13387 | END GetDeclaredDefinition ; | |
13388 | ||
13389 | ||
13390 | (* | |
13391 | GetDeclaredModule - returns the token where this symbol was declared | |
13392 | in an implementation or program module. | |
13393 | *) | |
13394 | ||
13395 | PROCEDURE GetDeclaredModule (Sym: CARDINAL) : CARDINAL ; | |
13396 | VAR | |
13397 | pSym: PtrToSymbol ; | |
13398 | BEGIN | |
13399 | pSym := GetPsym(Sym) ; | |
13400 | WITH pSym^ DO | |
13401 | CASE SymbolType OF | |
13402 | ||
13403 | ErrorSym : RETURN( Error.At.ModDeclared ) | | |
13404 | ObjectSym : RETURN( Object.At.ModDeclared ) | | |
13405 | VarientSym : RETURN( Varient.At.ModDeclared ) | | |
13406 | RecordSym : RETURN( Record.At.ModDeclared ) | | |
13407 | SubrangeSym : RETURN( Subrange.At.ModDeclared ) | | |
13408 | EnumerationSym : RETURN( Enumeration.At.ModDeclared ) | | |
13409 | ArraySym : RETURN( Array.At.ModDeclared ) | | |
13410 | SubscriptSym : RETURN( Subscript.At.ModDeclared ) | | |
13411 | UnboundedSym : RETURN( Unbounded.At.ModDeclared ) | | |
13412 | ProcedureSym : RETURN( Procedure.At.ModDeclared ) | | |
13413 | ProcTypeSym : RETURN( ProcType.At.ModDeclared ) | | |
13414 | ParamSym : RETURN( Param.At.ModDeclared ) | | |
13415 | VarParamSym : RETURN( VarParam.At.ModDeclared ) | | |
13416 | ConstStringSym : RETURN( ConstString.At.ModDeclared ) | | |
13417 | ConstLitSym : RETURN( ConstLit.At.ModDeclared ) | | |
13418 | ConstVarSym : RETURN( ConstVar.At.ModDeclared ) | | |
13419 | VarSym : RETURN( Var.At.ModDeclared ) | | |
13420 | TypeSym : RETURN( Type.At.ModDeclared ) | | |
13421 | PointerSym : RETURN( Pointer.At.ModDeclared ) | | |
13422 | RecordFieldSym : RETURN( RecordField.At.ModDeclared ) | | |
13423 | VarientFieldSym : RETURN( VarientField.At.ModDeclared ) | | |
13424 | EnumerationFieldSym: RETURN( EnumerationField.At.ModDeclared ) | | |
13425 | SetSym : RETURN( Set.At.ModDeclared ) | | |
13426 | DefImpSym : RETURN( DefImp.At.ModDeclared ) | | |
13427 | ModuleSym : RETURN( Module.At.ModDeclared ) | | |
13428 | UndefinedSym : RETURN( GetFirstUsed(Sym) ) | | |
13429 | ImportSym : RETURN( Import.at.ModDeclared ) | | |
13430 | ImportStatementSym : RETURN( ImportStatement.at.ModDeclared ) | | |
13431 | PartialUnboundedSym: RETURN( GetDeclaredModule(PartialUnbounded.Type) ) | |
13432 | ||
13433 | ELSE | |
13434 | InternalError ('not expecting this type of symbol') | |
13435 | END | |
13436 | END | |
13437 | END GetDeclaredModule ; | |
13438 | ||
13439 | ||
13440 | (* | |
13441 | PutDeclaredDefinition - associates the current tokenno with | |
13442 | the symbols declaration in the definition | |
13443 | module. | |
13444 | *) | |
13445 | ||
13446 | PROCEDURE PutDeclaredDefinition (tok: CARDINAL; Sym: CARDINAL) ; | |
13447 | VAR | |
13448 | pSym: PtrToSymbol ; | |
13449 | BEGIN | |
13450 | pSym := GetPsym(Sym) ; | |
13451 | WITH pSym^ DO | |
13452 | CASE SymbolType OF | |
13453 | ||
13454 | ErrorSym : Error.At.DefDeclared := tok | | |
13455 | ObjectSym : Object.At.DefDeclared := tok | | |
13456 | VarientSym : Varient.At.DefDeclared := tok | | |
13457 | RecordSym : Record.At.DefDeclared := tok | | |
13458 | SubrangeSym : Subrange.At.DefDeclared := tok | | |
13459 | EnumerationSym : Enumeration.At.DefDeclared := tok | | |
13460 | ArraySym : Array.At.DefDeclared := tok | | |
13461 | SubscriptSym : Subscript.At.DefDeclared := tok | | |
13462 | UnboundedSym : Unbounded.At.DefDeclared := tok | | |
13463 | ProcedureSym : Procedure.At.DefDeclared := tok | | |
13464 | ProcTypeSym : ProcType.At.DefDeclared := tok | | |
13465 | ParamSym : Param.At.DefDeclared := tok | | |
13466 | VarParamSym : VarParam.At.DefDeclared := tok | | |
13467 | ConstStringSym : ConstString.At.DefDeclared := tok | | |
13468 | ConstLitSym : ConstLit.At.DefDeclared := tok | | |
13469 | ConstVarSym : ConstVar.At.DefDeclared := tok | | |
13470 | VarSym : Var.At.DefDeclared := tok | | |
13471 | TypeSym : Type.At.DefDeclared := tok | | |
13472 | PointerSym : Pointer.At.DefDeclared := tok | | |
13473 | RecordFieldSym : RecordField.At.DefDeclared := tok | | |
13474 | VarientFieldSym : VarientField.At.DefDeclared := tok | | |
13475 | EnumerationFieldSym: EnumerationField.At.DefDeclared := tok | | |
13476 | SetSym : Set.At.DefDeclared := tok | | |
13477 | DefImpSym : DefImp.At.DefDeclared := tok | | |
13478 | ModuleSym : Module.At.DefDeclared := tok | | |
13479 | UndefinedSym : | | |
13480 | PartialUnboundedSym: PutDeclaredDefinition(tok, PartialUnbounded.Type) | |
13481 | ||
13482 | ELSE | |
13483 | InternalError ('not expecting this type of symbol') | |
13484 | END | |
13485 | END | |
13486 | END PutDeclaredDefinition ; | |
13487 | ||
13488 | ||
13489 | (* | |
13490 | PutDeclaredModule - returns the token where this symbol was declared | |
13491 | in an implementation or program module. | |
13492 | *) | |
13493 | ||
13494 | PROCEDURE PutDeclaredModule (tok: CARDINAL; Sym: CARDINAL) ; | |
13495 | VAR | |
13496 | pSym: PtrToSymbol ; | |
13497 | BEGIN | |
13498 | pSym := GetPsym(Sym) ; | |
13499 | WITH pSym^ DO | |
13500 | CASE SymbolType OF | |
13501 | ||
13502 | ErrorSym : Error.At.ModDeclared := tok | | |
13503 | ObjectSym : Object.At.ModDeclared := tok | | |
13504 | VarientSym : Varient.At.ModDeclared := tok | | |
13505 | RecordSym : Record.At.ModDeclared := tok | | |
13506 | SubrangeSym : Subrange.At.ModDeclared := tok | | |
13507 | EnumerationSym : Enumeration.At.ModDeclared := tok | | |
13508 | ArraySym : Array.At.ModDeclared := tok | | |
13509 | SubscriptSym : Subscript.At.ModDeclared := tok | | |
13510 | UnboundedSym : Unbounded.At.ModDeclared := tok | | |
13511 | ProcedureSym : Procedure.At.ModDeclared := tok | | |
13512 | ProcTypeSym : ProcType.At.ModDeclared := tok | | |
13513 | ParamSym : Param.At.ModDeclared := tok | | |
13514 | VarParamSym : VarParam.At.ModDeclared := tok | | |
13515 | ConstStringSym : ConstString.At.ModDeclared := tok | | |
13516 | ConstLitSym : ConstLit.At.ModDeclared := tok | | |
13517 | ConstVarSym : ConstVar.At.ModDeclared := tok | | |
13518 | VarSym : Var.At.ModDeclared := tok | | |
13519 | TypeSym : Type.At.ModDeclared := tok | | |
13520 | PointerSym : Pointer.At.ModDeclared := tok | | |
13521 | RecordFieldSym : RecordField.At.ModDeclared := tok | | |
13522 | VarientFieldSym : VarientField.At.ModDeclared := tok | | |
13523 | EnumerationFieldSym: EnumerationField.At.ModDeclared := tok | | |
13524 | SetSym : Set.At.ModDeclared := tok | | |
13525 | DefImpSym : DefImp.At.ModDeclared := tok | | |
13526 | ModuleSym : Module.At.ModDeclared := tok | | |
13527 | UndefinedSym : | | |
13528 | PartialUnboundedSym: PutDeclaredModule(tok, PartialUnbounded.Type) | |
13529 | ||
13530 | ELSE | |
13531 | InternalError ('not expecting this type of symbol') | |
13532 | END | |
13533 | END | |
13534 | END PutDeclaredModule ; | |
13535 | ||
13536 | ||
13537 | (* | |
13538 | PutDeclared - adds an entry to symbol, Sym, indicating that it | |
13539 | was declared at, tok. This routine | |
13540 | may be called twice, once for definition module | |
13541 | partial declaration and once when parsing the | |
13542 | implementation module. | |
13543 | *) | |
13544 | ||
13545 | PROCEDURE PutDeclared (tok: CARDINAL; Sym: CARDINAL) ; | |
13546 | BEGIN | |
13547 | IF CompilingDefinitionModule () | |
13548 | THEN | |
13549 | PutDeclaredDefinition (tok, Sym) | |
13550 | ELSE | |
13551 | PutDeclaredModule (tok, Sym) | |
13552 | END | |
13553 | END PutDeclared ; | |
13554 | ||
13555 | ||
13556 | (* | |
13557 | GetDeclaredDef - returns the tokenno where the symbol was declared. | |
13558 | The priority of declaration is definition, implementation | |
13559 | and program module. | |
13560 | *) | |
13561 | ||
13562 | PROCEDURE GetDeclaredDef (Sym: CARDINAL) : CARDINAL ; | |
13563 | VAR | |
13564 | declared: CARDINAL ; | |
13565 | BEGIN | |
13566 | declared := GetDeclaredDefinition (Sym) ; | |
13567 | IF declared = UnknownTokenNo | |
13568 | THEN | |
13569 | RETURN GetDeclaredModule (Sym) | |
13570 | END ; | |
13571 | RETURN declared | |
13572 | END GetDeclaredDef ; | |
13573 | ||
13574 | ||
13575 | (* | |
13576 | GetDeclaredMod - returns the tokenno where the symbol was declared. | |
13577 | The priority of declaration is program, | |
13578 | implementation and definition module. | |
13579 | *) | |
13580 | ||
13581 | PROCEDURE GetDeclaredMod (Sym: CARDINAL) : CARDINAL ; | |
13582 | VAR | |
13583 | declared: CARDINAL ; | |
13584 | BEGIN | |
13585 | declared := GetDeclaredModule (Sym) ; | |
13586 | IF declared = UnknownTokenNo | |
13587 | THEN | |
13588 | RETURN GetDeclaredDefinition (Sym) | |
13589 | END ; | |
13590 | RETURN declared | |
13591 | END GetDeclaredMod ; | |
13592 | ||
13593 | ||
13594 | (* | |
13595 | GetFirstUsed - returns the token where this symbol was first used. | |
13596 | *) | |
13597 | ||
13598 | PROCEDURE GetFirstUsed (Sym: CARDINAL) : CARDINAL ; | |
13599 | VAR | |
13600 | pSym: PtrToSymbol ; | |
13601 | BEGIN | |
13602 | pSym := GetPsym (Sym) ; | |
13603 | WITH pSym^ DO | |
13604 | CASE SymbolType OF | |
13605 | ||
13606 | ErrorSym : RETURN( Error.At.FirstUsed ) | | |
13607 | ObjectSym : RETURN( Object.At.FirstUsed ) | | |
13608 | UndefinedSym : RETURN( Undefined.At.FirstUsed ) | | |
13609 | VarientSym : RETURN( Varient.At.FirstUsed ) | | |
13610 | RecordSym : RETURN( Record.At.FirstUsed ) | | |
13611 | SubrangeSym : RETURN( Subrange.At.FirstUsed ) | | |
13612 | EnumerationSym : RETURN( Enumeration.At.FirstUsed ) | | |
13613 | ArraySym : RETURN( Array.At.FirstUsed ) | | |
13614 | SubscriptSym : RETURN( Subscript.At.FirstUsed ) | | |
13615 | UnboundedSym : RETURN( Unbounded.At.FirstUsed ) | | |
13616 | ProcedureSym : RETURN( Procedure.At.FirstUsed ) | | |
13617 | ProcTypeSym : RETURN( ProcType.At.FirstUsed ) | | |
13618 | ParamSym : RETURN( Param.At.FirstUsed ) | | |
13619 | VarParamSym : RETURN( VarParam.At.FirstUsed ) | | |
13620 | ConstStringSym : RETURN( ConstString.At.FirstUsed ) | | |
13621 | ConstLitSym : RETURN( ConstLit.At.FirstUsed ) | | |
13622 | ConstVarSym : RETURN( ConstVar.At.FirstUsed ) | | |
13623 | VarSym : RETURN( Var.At.FirstUsed ) | | |
13624 | TypeSym : RETURN( Type.At.FirstUsed ) | | |
13625 | PointerSym : RETURN( Pointer.At.FirstUsed ) | | |
13626 | RecordFieldSym : RETURN( RecordField.At.FirstUsed ) | | |
13627 | VarientFieldSym : RETURN( VarientField.At.FirstUsed ) | | |
13628 | EnumerationFieldSym: RETURN( EnumerationField.At.FirstUsed ) | | |
13629 | SetSym : RETURN( Set.At.FirstUsed ) | | |
13630 | DefImpSym : RETURN( DefImp.At.FirstUsed ) | | |
13631 | ModuleSym : RETURN( Module.At.FirstUsed ) | |
13632 | ||
13633 | ELSE | |
13634 | InternalError ('not expecting this type of symbol') | |
13635 | END | |
13636 | END | |
13637 | END GetFirstUsed ; | |
13638 | ||
13639 | ||
13640 | (* | |
13641 | ForeachProcedureDo - for each procedure in module, Sym, do procedure, P. | |
13642 | *) | |
13643 | ||
13644 | PROCEDURE ForeachProcedureDo (Sym: CARDINAL; P: PerformOperation) ; | |
13645 | VAR | |
13646 | pSym: PtrToSymbol ; | |
13647 | BEGIN | |
13648 | pSym := GetPsym(Sym) ; | |
13649 | WITH pSym^ DO | |
13650 | CASE SymbolType OF | |
13651 | ||
13652 | DefImpSym : ForeachItemInListDo( DefImp.ListOfProcs, P) | | |
13653 | ModuleSym : ForeachItemInListDo( Module.ListOfProcs, P) | | |
13654 | ProcedureSym: ForeachItemInListDo( Procedure.ListOfProcs, P) | |
13655 | ||
13656 | ELSE | |
13657 | InternalError ('expecting DefImp or Module symbol') | |
13658 | END | |
13659 | END | |
13660 | END ForeachProcedureDo ; | |
13661 | ||
13662 | ||
13663 | (* | |
13664 | ForeachInnerModuleDo - for each inner module in module, Sym, | |
13665 | do procedure, P. | |
13666 | *) | |
13667 | ||
13668 | PROCEDURE ForeachInnerModuleDo (Sym: CARDINAL; P: PerformOperation) ; | |
13669 | VAR | |
13670 | pSym: PtrToSymbol ; | |
13671 | BEGIN | |
13672 | pSym := GetPsym(Sym) ; | |
13673 | WITH pSym^ DO | |
13674 | CASE SymbolType OF | |
13675 | ||
13676 | DefImpSym : ForeachItemInListDo( DefImp.ListOfModules, P) | | |
13677 | ModuleSym : ForeachItemInListDo( Module.ListOfModules, P) | | |
13678 | ProcedureSym: ForeachItemInListDo( Procedure.ListOfModules, P) | |
13679 | ||
13680 | ELSE | |
13681 | InternalError ('expecting DefImp or Module symbol') | |
13682 | END | |
13683 | END | |
13684 | END ForeachInnerModuleDo ; | |
13685 | ||
13686 | ||
13687 | (* | |
13688 | ForeachModuleDo - for each module do procedure, P. | |
13689 | *) | |
13690 | ||
13691 | PROCEDURE ForeachModuleDo (P: PerformOperation) ; | |
13692 | BEGIN | |
13693 | ForeachNodeDo (ModuleTree, P) | |
13694 | END ForeachModuleDo ; | |
13695 | ||
13696 | ||
13697 | (* | |
13698 | ForeachFieldEnumerationDo - for each field in enumeration, Sym, | |
89b58667 GM |
13699 | do procedure, P. Each call to P contains |
13700 | an enumeration field, the order is alphabetical. | |
13701 | Use ForeachLocalSymDo for declaration order. | |
1eee94d3 GM |
13702 | *) |
13703 | ||
13704 | PROCEDURE ForeachFieldEnumerationDo (Sym: CARDINAL; P: PerformOperation) ; | |
13705 | VAR | |
13706 | pSym: PtrToSymbol ; | |
13707 | BEGIN | |
13708 | pSym := GetPsym(Sym) ; | |
13709 | WITH pSym^ DO | |
13710 | CASE SymbolType OF | |
13711 | ||
89b58667 | 13712 | EnumerationSym: ForeachNodeDo (Enumeration.LocalSymbols, P) |
1eee94d3 GM |
13713 | |
13714 | ELSE | |
13715 | InternalError ('expecting Enumeration symbol') | |
13716 | END | |
13717 | END | |
13718 | END ForeachFieldEnumerationDo ; | |
13719 | ||
13720 | ||
13721 | (* | |
13722 | IsProcedureReachable - Returns true if the procedure, Sym, is | |
13723 | reachable from the main Module. | |
13724 | *) | |
13725 | ||
13726 | PROCEDURE IsProcedureReachable (Sym: CARDINAL) : BOOLEAN ; | |
13727 | VAR | |
13728 | pSym: PtrToSymbol ; | |
13729 | BEGIN | |
13730 | pSym := GetPsym(Sym) ; | |
13731 | WITH pSym^ DO | |
13732 | CASE SymbolType OF | |
13733 | ||
13734 | ProcedureSym: RETURN( Procedure.Reachable ) | |
13735 | ||
13736 | ELSE | |
13737 | InternalError ('expecting Procedure symbol') | |
13738 | END | |
13739 | END | |
13740 | END IsProcedureReachable ; | |
13741 | ||
13742 | ||
13743 | (* | |
13744 | IsProcType - returns true if Sym is a ProcType Symbol. | |
13745 | *) | |
13746 | ||
13747 | PROCEDURE IsProcType (Sym: CARDINAL) : BOOLEAN ; | |
13748 | VAR | |
13749 | pSym: PtrToSymbol ; | |
13750 | BEGIN | |
13751 | pSym := GetPsym(Sym) ; | |
13752 | RETURN( pSym^.SymbolType=ProcTypeSym ) | |
13753 | END IsProcType ; | |
13754 | ||
13755 | ||
13756 | (* | |
13757 | IsVar - returns true if Sym is a Var Symbol. | |
13758 | *) | |
13759 | ||
13760 | PROCEDURE IsVar (Sym: CARDINAL) : BOOLEAN ; | |
13761 | VAR | |
13762 | pSym: PtrToSymbol ; | |
13763 | BEGIN | |
13764 | pSym := GetPsym(Sym) ; | |
13765 | RETURN( pSym^.SymbolType=VarSym ) | |
13766 | END IsVar ; | |
13767 | ||
13768 | ||
13769 | (* | |
13770 | DoIsConst - returns TRUE if Sym is defined as a constant | |
13771 | or is an enumeration field or string. | |
13772 | *) | |
13773 | ||
13774 | PROCEDURE DoIsConst (Sym: CARDINAL) : BOOLEAN ; | |
13775 | VAR | |
13776 | pSym: PtrToSymbol ; | |
13777 | BEGIN | |
13778 | pSym := GetPsym(Sym) ; | |
13779 | WITH pSym^ DO | |
13780 | RETURN( (SymbolType=ConstVarSym) OR | |
13781 | (SymbolType=ConstLitSym) OR | |
13782 | (SymbolType=ConstStringSym) OR | |
13783 | ((SymbolType=VarSym) AND (Var.AddrMode=ImmediateValue)) OR | |
13784 | (SymbolType=EnumerationFieldSym) | |
13785 | ) | |
13786 | END | |
13787 | END DoIsConst ; | |
13788 | ||
13789 | ||
13790 | (* | |
13791 | IsConst - returns true if Sym contains a constant value. | |
13792 | *) | |
13793 | ||
13794 | PROCEDURE IsConst (Sym: CARDINAL) : BOOLEAN ; | |
13795 | BEGIN | |
13796 | IF IsConstructor(Sym) | |
13797 | THEN | |
13798 | RETURN( IsConstructorConstant(Sym) ) | |
13799 | ELSE | |
13800 | RETURN( DoIsConst(Sym) ) | |
13801 | END | |
13802 | END IsConst ; | |
13803 | ||
13804 | ||
13805 | (* | |
13806 | IsConstString - returns whether sym is a conststring of any variant. | |
13807 | *) | |
13808 | ||
13809 | PROCEDURE IsConstString (sym: CARDINAL) : BOOLEAN ; | |
13810 | VAR | |
13811 | pSym: PtrToSymbol ; | |
13812 | BEGIN | |
13813 | pSym := GetPsym (sym) ; | |
13814 | WITH pSym^ DO | |
13815 | RETURN SymbolType = ConstStringSym | |
13816 | END | |
13817 | END IsConstString ; | |
13818 | ||
13819 | ||
13820 | (* | |
13821 | IsConstLit - returns true if Sym is a literal constant. | |
13822 | *) | |
13823 | ||
13824 | PROCEDURE IsConstLit (Sym: CARDINAL) : BOOLEAN ; | |
13825 | VAR | |
13826 | pSym: PtrToSymbol ; | |
13827 | BEGIN | |
13828 | pSym := GetPsym(Sym) ; | |
13829 | WITH pSym^ DO | |
13830 | RETURN( SymbolType=ConstLitSym ) | |
13831 | END | |
13832 | END IsConstLit ; | |
13833 | ||
13834 | ||
13835 | (* | |
13836 | IsDummy - returns true if Sym is a Dummy symbol. | |
13837 | *) | |
13838 | ||
13839 | PROCEDURE IsDummy (Sym: CARDINAL) : BOOLEAN ; | |
13840 | VAR | |
13841 | pSym: PtrToSymbol ; | |
13842 | BEGIN | |
13843 | pSym := GetPsym(Sym) ; | |
13844 | RETURN( pSym^.SymbolType=DummySym ) | |
13845 | END IsDummy ; | |
13846 | ||
13847 | ||
13848 | (* | |
13849 | IsTemporary - returns true if Sym is a Temporary symbol. | |
13850 | *) | |
13851 | ||
13852 | PROCEDURE IsTemporary (Sym: CARDINAL) : BOOLEAN ; | |
13853 | VAR | |
13854 | pSym: PtrToSymbol ; | |
13855 | BEGIN | |
13856 | pSym := GetPsym(Sym) ; | |
13857 | WITH pSym^ DO | |
13858 | CASE SymbolType OF | |
13859 | ||
13860 | VarSym : RETURN( Var.IsTemp ) | | |
13861 | ConstVarSym: RETURN( ConstVar.IsTemp ) | |
13862 | ||
13863 | ELSE | |
13864 | RETURN( FALSE ) | |
13865 | END | |
13866 | END | |
13867 | END IsTemporary ; | |
13868 | ||
13869 | ||
13870 | (* | |
13871 | IsVarAParam - returns true if Sym is a variable declared as a parameter. | |
13872 | *) | |
13873 | ||
13874 | PROCEDURE IsVarAParam (Sym: CARDINAL) : BOOLEAN ; | |
13875 | VAR | |
13876 | pSym: PtrToSymbol ; | |
13877 | BEGIN | |
13878 | pSym := GetPsym(Sym) ; | |
13879 | WITH pSym^ DO | |
13880 | CASE SymbolType OF | |
13881 | ||
13882 | VarSym: RETURN( Var.IsParam ) | |
13883 | ||
13884 | ELSE | |
13885 | RETURN( FALSE ) | |
13886 | END | |
13887 | END | |
13888 | END IsVarAParam ; | |
13889 | ||
13890 | ||
13891 | (* | |
13892 | IsSubscript - returns true if Sym is a subscript symbol. | |
13893 | *) | |
13894 | ||
13895 | PROCEDURE IsSubscript (Sym: CARDINAL) : BOOLEAN ; | |
13896 | VAR | |
13897 | pSym: PtrToSymbol ; | |
13898 | BEGIN | |
13899 | pSym := GetPsym(Sym) ; | |
13900 | RETURN( pSym^.SymbolType=SubscriptSym ) | |
13901 | END IsSubscript ; | |
13902 | ||
13903 | ||
13904 | (* | |
13905 | IsSubrange - returns true if Sym is a subrange symbol. | |
13906 | *) | |
13907 | ||
13908 | PROCEDURE IsSubrange (Sym: CARDINAL) : BOOLEAN ; | |
13909 | VAR | |
13910 | pSym: PtrToSymbol ; | |
13911 | BEGIN | |
13912 | pSym := GetPsym(Sym) ; | |
13913 | RETURN( pSym^.SymbolType=SubrangeSym ) | |
13914 | END IsSubrange ; | |
13915 | ||
13916 | ||
13917 | (* | |
13918 | IsProcedureVariable - returns true if a Sym is a variable and | |
13919 | it was declared within a procedure. | |
13920 | *) | |
13921 | ||
13922 | PROCEDURE IsProcedureVariable (Sym: CARDINAL) : BOOLEAN ; | |
13923 | BEGIN | |
13924 | CheckLegal(Sym) ; | |
13925 | RETURN( IsVar(Sym) AND IsProcedure(GetVarScope(Sym)) ) | |
13926 | END IsProcedureVariable ; | |
13927 | ||
13928 | ||
13929 | (* | |
13930 | IsProcedureNested - returns TRUE if procedure, Sym, was | |
13931 | declared as a nested procedure. | |
13932 | *) | |
13933 | ||
13934 | PROCEDURE IsProcedureNested (Sym: CARDINAL) : BOOLEAN ; | |
13935 | BEGIN | |
13936 | RETURN( IsProcedure(Sym) AND (IsProcedure(GetScope(Sym))) ) | |
13937 | END IsProcedureNested ; | |
13938 | ||
13939 | ||
13940 | (* | |
13941 | IsAModula2Type - returns true if Sym, is a: | |
13942 | IsType, IsPointer, IsRecord, IsEnumeration, | |
13943 | IsSubrange, IsArray, IsUnbounded, IsProcType. | |
13944 | NOTE that it different from IsType. | |
13945 | *) | |
13946 | ||
13947 | PROCEDURE IsAModula2Type (Sym: CARDINAL) : BOOLEAN ; | |
13948 | BEGIN | |
13949 | CheckLegal(Sym) ; | |
13950 | RETURN( | |
13951 | IsType(Sym) OR IsRecord(Sym) OR IsPointer(Sym) OR | |
13952 | IsEnumeration(Sym) OR IsSubrange(Sym) OR IsArray(Sym) OR | |
13953 | IsUnbounded(Sym) OR IsProcType(Sym) OR IsSet(Sym) | |
13954 | ) | |
13955 | END IsAModula2Type ; | |
13956 | ||
13957 | ||
13958 | (* | |
13959 | IsGnuAsmVolatile - returns TRUE if a GnuAsm symbol was defined as VOLATILE. | |
13960 | *) | |
13961 | ||
13962 | PROCEDURE IsGnuAsmVolatile (Sym: CARDINAL) : BOOLEAN ; | |
13963 | VAR | |
13964 | pSym: PtrToSymbol ; | |
13965 | BEGIN | |
13966 | pSym := GetPsym(Sym) ; | |
13967 | WITH pSym^ DO | |
13968 | CASE SymbolType OF | |
13969 | ||
13970 | GnuAsmSym: RETURN( GnuAsm.Volatile ) | |
13971 | ||
13972 | ELSE | |
13973 | InternalError ('expecting GnuAsm symbol') | |
13974 | END | |
13975 | END | |
13976 | END IsGnuAsmVolatile ; | |
13977 | ||
13978 | ||
13979 | (* | |
13980 | IsGnuAsmSimple - returns TRUE if a GnuAsm symbol is a simple kind. | |
13981 | *) | |
13982 | ||
13983 | PROCEDURE IsGnuAsmSimple (Sym: CARDINAL) : BOOLEAN ; | |
13984 | VAR | |
13985 | pSym: PtrToSymbol ; | |
13986 | BEGIN | |
13987 | pSym := GetPsym(Sym) ; | |
13988 | WITH pSym^ DO | |
13989 | CASE SymbolType OF | |
13990 | ||
13991 | GnuAsmSym: RETURN( GnuAsm.Simple ) | |
13992 | ||
13993 | ELSE | |
13994 | InternalError ('expecting GnuAsm symbol') | |
13995 | END | |
13996 | END | |
13997 | END IsGnuAsmSimple ; | |
13998 | ||
13999 | ||
14000 | (* | |
14001 | IsGnuAsm - returns TRUE if Sym is a GnuAsm symbol. | |
14002 | *) | |
14003 | ||
14004 | PROCEDURE IsGnuAsm (Sym: CARDINAL) : BOOLEAN ; | |
14005 | VAR | |
14006 | pSym: PtrToSymbol ; | |
14007 | BEGIN | |
14008 | pSym := GetPsym(Sym) ; | |
14009 | WITH pSym^ DO | |
14010 | RETURN( SymbolType=GnuAsmSym ) | |
14011 | END | |
14012 | END IsGnuAsm ; | |
14013 | ||
14014 | ||
14015 | (* | |
14016 | IsRegInterface - returns TRUE if Sym is a RegInterface symbol. | |
14017 | *) | |
14018 | ||
14019 | PROCEDURE IsRegInterface (Sym: CARDINAL) : BOOLEAN ; | |
14020 | VAR | |
14021 | pSym: PtrToSymbol ; | |
14022 | BEGIN | |
14023 | pSym := GetPsym(Sym) ; | |
14024 | WITH pSym^ DO | |
14025 | RETURN( SymbolType=InterfaceSym ) | |
14026 | END | |
14027 | END IsRegInterface ; | |
14028 | ||
14029 | ||
14030 | (* | |
14031 | GetParam - returns the ParamNo parameter from procedure ProcSym | |
14032 | *) | |
14033 | ||
14034 | PROCEDURE GetParam (Sym: CARDINAL; ParamNo: CARDINAL) : CARDINAL ; | |
14035 | BEGIN | |
14036 | CheckLegal(Sym) ; | |
14037 | IF ParamNo=0 | |
14038 | THEN | |
14039 | (* Parameter Zero is the return argument for the Function *) | |
14040 | RETURN(GetType(Sym)) | |
14041 | ELSE | |
14042 | RETURN(GetNthParam(Sym, ParamNo)) | |
14043 | END | |
14044 | END GetParam ; | |
14045 | ||
14046 | ||
14047 | (* | |
14048 | GetFromIndex - return a value from list, i, at position, n. | |
14049 | *) | |
14050 | ||
14051 | PROCEDURE GetFromIndex (i: Indexing.Index; n: CARDINAL) : CARDINAL ; | |
14052 | VAR | |
14053 | p: POINTER TO CARDINAL ; | |
14054 | BEGIN | |
14055 | p := Indexing.GetIndice(i, n) ; | |
14056 | RETURN( p^ ) | |
14057 | END GetFromIndex ; | |
14058 | ||
14059 | ||
14060 | (* | |
14061 | PutIntoIndex - places value, v, into list, i, at position, n. | |
14062 | *) | |
14063 | ||
14064 | PROCEDURE PutIntoIndex (VAR i: Indexing.Index; n: CARDINAL; v: CARDINAL) ; | |
14065 | VAR | |
14066 | p: POINTER TO CARDINAL ; | |
14067 | BEGIN | |
14068 | NEW(p) ; | |
14069 | p^ := v ; | |
14070 | Indexing.PutIndice(i, n, p) | |
14071 | END PutIntoIndex ; | |
14072 | ||
14073 | ||
14074 | (* | |
14075 | Make2Tuple - creates and returns a 2 tuple from, a, and, b. | |
14076 | *) | |
14077 | ||
14078 | PROCEDURE Make2Tuple (a, b: CARDINAL) : CARDINAL ; | |
14079 | VAR | |
14080 | pSym: PtrToSymbol ; | |
14081 | Sym : CARDINAL ; | |
14082 | BEGIN | |
14083 | NewSym(Sym) ; | |
14084 | pSym := GetPsym(Sym) ; | |
14085 | WITH pSym^ DO | |
14086 | SymbolType := TupleSym ; | |
14087 | WITH Tuple DO | |
14088 | nTuple := 2 ; | |
14089 | list := Indexing.InitIndex(1) ; | |
14090 | PutIntoIndex(list, 1, a) ; | |
14091 | PutIntoIndex(list, 2, b) ; | |
14092 | InitWhereDeclared(At) ; | |
14093 | InitWhereFirstUsed(At) | |
14094 | END | |
14095 | END ; | |
14096 | RETURN( Sym ) | |
14097 | END Make2Tuple ; | |
14098 | ||
14099 | ||
14100 | (* | |
14101 | IsSizeSolved - returns true if the size of Sym is solved. | |
14102 | *) | |
14103 | ||
14104 | PROCEDURE IsSizeSolved (Sym: CARDINAL) : BOOLEAN ; | |
14105 | VAR | |
14106 | pSym: PtrToSymbol ; | |
14107 | BEGIN | |
14108 | CheckLegal(Sym) ; | |
14109 | pSym := GetPsym(Sym) ; | |
14110 | WITH pSym^ DO | |
14111 | CASE SymbolType OF | |
14112 | ||
14113 | ProcedureSym : RETURN( IsSolved(Procedure.Size) ) | | |
14114 | VarSym : RETURN( IsSolved(Var.Size) ) | | |
14115 | TypeSym : RETURN( IsSolved(Type.Size) ) | | |
14116 | SetSym : RETURN( IsSolved(Set.Size) ) | | |
14117 | RecordSym : RETURN( IsSolved(Record.Size) ) | | |
14118 | VarientSym : RETURN( IsSolved(Varient.Size) ) | | |
14119 | EnumerationSym : RETURN( IsSolved(Enumeration.Size) ) | | |
14120 | PointerSym : RETURN( IsSolved(Pointer.Size) ) | | |
14121 | ArraySym : RETURN( IsSolved(Array.Size) ) | | |
14122 | RecordFieldSym : RETURN( IsSolved(RecordField.Size) ) | | |
14123 | VarientFieldSym : RETURN( IsSolved(VarientField.Size) ) | | |
14124 | SubrangeSym : RETURN( IsSolved(Subrange.Size) ) | | |
14125 | SubscriptSym : RETURN( IsSolved(Subscript.Size) ) | | |
14126 | ProcTypeSym : RETURN( IsSolved(ProcType.Size) ) | | |
14127 | UnboundedSym : RETURN( IsSolved(Unbounded.Size) ) | |
14128 | ||
14129 | ELSE | |
14130 | InternalError ('not expecting this kind of symbol') | |
14131 | END | |
14132 | END | |
14133 | END IsSizeSolved ; | |
14134 | ||
14135 | ||
14136 | (* | |
14137 | IsOffsetSolved - returns true if the Offset of Sym is solved. | |
14138 | *) | |
14139 | ||
14140 | PROCEDURE IsOffsetSolved (Sym: CARDINAL) : BOOLEAN ; | |
14141 | VAR | |
14142 | pSym: PtrToSymbol ; | |
14143 | BEGIN | |
14144 | CheckLegal(Sym) ; | |
14145 | pSym := GetPsym(Sym) ; | |
14146 | WITH pSym^ DO | |
14147 | CASE SymbolType OF | |
14148 | ||
14149 | VarSym : RETURN( IsSolved(Var.Offset) ) | | |
14150 | RecordFieldSym : RETURN( IsSolved(RecordField.Offset) ) | | |
14151 | VarientFieldSym : RETURN( IsSolved(VarientField.Offset) ) | |
14152 | ||
14153 | ELSE | |
14154 | InternalError ('not expecting this kind of symbol') | |
14155 | END | |
14156 | END | |
14157 | END IsOffsetSolved ; | |
14158 | ||
14159 | ||
14160 | (* | |
14161 | IsValueSolved - returns true if the value of Sym is solved. | |
14162 | *) | |
14163 | ||
14164 | PROCEDURE IsValueSolved (Sym: CARDINAL) : BOOLEAN ; | |
14165 | VAR | |
14166 | pSym: PtrToSymbol ; | |
14167 | BEGIN | |
14168 | CheckLegal(Sym) ; | |
14169 | pSym := GetPsym(Sym) ; | |
14170 | WITH pSym^ DO | |
14171 | CASE SymbolType OF | |
14172 | ||
14173 | ConstLitSym : RETURN( IsSolved(ConstLit.Value) ) | | |
14174 | ConstVarSym : RETURN( IsSolved(ConstVar.Value) ) | | |
14175 | EnumerationFieldSym : RETURN( IsSolved(EnumerationField.Value) ) | | |
14176 | ConstStringSym : RETURN( TRUE ) | |
14177 | ||
14178 | ELSE | |
14179 | InternalError ('not expecting this kind of symbol') | |
14180 | END | |
14181 | END | |
14182 | END IsValueSolved ; | |
14183 | ||
14184 | ||
14185 | (* | |
14186 | IsConstructorConstant - returns TRUE if constructor, Sym, is | |
14187 | defined by only constants. | |
14188 | *) | |
14189 | ||
14190 | PROCEDURE IsConstructorConstant (Sym: CARDINAL) : BOOLEAN ; | |
14191 | VAR | |
14192 | pSym: PtrToSymbol ; | |
14193 | BEGIN | |
14194 | IF IsConstructor(Sym) OR IsConstSet(Sym) | |
14195 | THEN | |
14196 | pSym := GetPsym(Sym) ; | |
14197 | WITH pSym^ DO | |
14198 | CASE SymbolType OF | |
14199 | ||
14200 | ConstVarSym: RETURN( IsValueConst(ConstVar.Value) ) | | |
14201 | ConstLitSym: RETURN( IsValueConst(ConstLit.Value) ) | |
14202 | ||
14203 | ELSE | |
14204 | InternalError ('expecting Constructor') | |
14205 | END | |
14206 | END | |
14207 | ELSE | |
14208 | InternalError ('expecting Constructor') | |
14209 | END | |
14210 | END IsConstructorConstant ; | |
14211 | ||
14212 | ||
14213 | (* | |
14214 | IsComposite - returns TRUE if symbol, sym, is a composite | |
14215 | type: ie an ARRAY or RECORD. | |
14216 | *) | |
14217 | ||
14218 | PROCEDURE IsComposite (sym: CARDINAL) : BOOLEAN ; | |
14219 | BEGIN | |
14220 | IF sym=NulSym | |
14221 | THEN | |
14222 | RETURN( FALSE ) | |
14223 | ELSE | |
14224 | sym := SkipType(sym) ; | |
14225 | RETURN( IsArray(sym) OR IsRecord(sym) ) | |
14226 | END | |
14227 | END IsComposite ; | |
14228 | ||
14229 | ||
14230 | (* | |
14231 | IsSumOfParamSizeSolved - has the sum of parameters been solved yet? | |
14232 | *) | |
14233 | ||
14234 | PROCEDURE IsSumOfParamSizeSolved (Sym: CARDINAL) : BOOLEAN ; | |
14235 | VAR | |
14236 | pSym: PtrToSymbol ; | |
14237 | BEGIN | |
14238 | CheckLegal(Sym) ; | |
14239 | pSym := GetPsym(Sym) ; | |
14240 | WITH pSym^ DO | |
14241 | CASE SymbolType OF | |
14242 | ||
14243 | ProcedureSym: RETURN( IsSolved(Procedure.TotalParamSize) ) | | |
14244 | ProcTypeSym : RETURN( IsSolved(ProcType.TotalParamSize) ) | |
14245 | ||
14246 | ELSE | |
14247 | InternalError ('expecting Procedure or ProcType symbol') | |
14248 | END | |
14249 | END | |
14250 | END IsSumOfParamSizeSolved ; | |
14251 | ||
14252 | ||
14253 | (* | |
14254 | PushSize - pushes the size of Sym. | |
14255 | *) | |
14256 | ||
14257 | PROCEDURE PushSize (Sym: CARDINAL) ; | |
14258 | VAR | |
14259 | pSym: PtrToSymbol ; | |
14260 | BEGIN | |
14261 | CheckLegal(Sym) ; | |
14262 | pSym := GetPsym(Sym) ; | |
14263 | WITH pSym^ DO | |
14264 | CASE SymbolType OF | |
14265 | ||
14266 | ProcedureSym : PushFrom(Procedure.Size) | | |
14267 | VarSym : PushFrom(Var.Size) | | |
14268 | TypeSym : PushFrom(Type.Size) | | |
14269 | SetSym : PushFrom(Set.Size) | | |
14270 | VarientSym : PushFrom(Varient.Size) | | |
14271 | RecordSym : PushFrom(Record.Size) | | |
14272 | EnumerationSym : PushFrom(Enumeration.Size) | | |
14273 | PointerSym : PushFrom(Pointer.Size) | | |
14274 | ArraySym : PushFrom(Array.Size) | | |
14275 | RecordFieldSym : PushFrom(RecordField.Size) | | |
14276 | VarientFieldSym : PushFrom(VarientField.Size) | | |
14277 | SubrangeSym : PushFrom(Subrange.Size) | | |
14278 | SubscriptSym : PushFrom(Subscript.Size) | | |
14279 | ProcTypeSym : PushFrom(ProcType.Size) | | |
14280 | UnboundedSym : PushFrom(Unbounded.Size) | |
14281 | ||
14282 | ELSE | |
14283 | InternalError ('not expecting this kind of symbol') | |
14284 | END | |
14285 | END | |
14286 | END PushSize ; | |
14287 | ||
14288 | ||
14289 | (* | |
14290 | PushOffset - pushes the Offset of Sym. | |
14291 | *) | |
14292 | ||
14293 | PROCEDURE PushOffset (Sym: CARDINAL) ; | |
14294 | VAR | |
14295 | pSym: PtrToSymbol ; | |
14296 | BEGIN | |
14297 | CheckLegal(Sym) ; | |
14298 | pSym := GetPsym(Sym) ; | |
14299 | WITH pSym^ DO | |
14300 | CASE SymbolType OF | |
14301 | ||
14302 | VarSym : PushFrom(Var.Offset) | | |
14303 | RecordFieldSym : PushFrom(RecordField.Offset) | | |
14304 | VarientFieldSym : PushFrom(VarientField.Offset) | |
14305 | ||
14306 | ELSE | |
14307 | InternalError ('not expecting this kind of symbol') | |
14308 | END | |
14309 | END | |
14310 | END PushOffset ; | |
14311 | ||
14312 | ||
14313 | (* | |
14314 | PushValue - pushes the Value of Sym onto the ALU stack. | |
14315 | *) | |
14316 | ||
14317 | PROCEDURE PushValue (Sym: CARDINAL) ; | |
14318 | VAR | |
14319 | pSym: PtrToSymbol ; | |
14320 | BEGIN | |
14321 | CheckLegal(Sym) ; | |
14322 | pSym := GetPsym(Sym) ; | |
14323 | WITH pSym^ DO | |
14324 | CASE SymbolType OF | |
14325 | ||
14326 | ConstLitSym : PushFrom(ConstLit.Value) | | |
14327 | ConstVarSym : PushFrom(ConstVar.Value) | | |
14328 | EnumerationFieldSym : PushFrom(EnumerationField.Value) | | |
14329 | ConstStringSym : PushConstString(Sym) | |
14330 | ||
14331 | ELSE | |
14332 | InternalError ('not expecting this kind of symbol') | |
14333 | END | |
14334 | END | |
14335 | END PushValue ; | |
14336 | ||
14337 | ||
14338 | (* | |
14339 | PushConstString - pushes the character string onto the ALU stack. | |
14340 | It assumes that the character string is only | |
14341 | one character long. | |
14342 | *) | |
14343 | ||
14344 | PROCEDURE PushConstString (Sym: CARDINAL) ; | |
14345 | VAR | |
14346 | pSym: PtrToSymbol ; | |
14347 | a : ARRAY [0..10] OF CHAR ; | |
14348 | BEGIN | |
14349 | CheckLegal (Sym) ; | |
14350 | pSym := GetPsym (Sym) ; | |
14351 | WITH pSym^ DO | |
14352 | CASE SymbolType OF | |
14353 | ||
14354 | ConstStringSym: WITH ConstString DO | |
14355 | IF Length = 1 | |
14356 | THEN | |
14357 | GetKey (Contents, a) ; | |
14358 | PushChar (a[0]) | |
14359 | ELSE | |
14360 | WriteFormat0 ('ConstString must be length 1') | |
14361 | END | |
14362 | END | |
14363 | ||
14364 | ELSE | |
14365 | InternalError ('expecting ConstString symbol') | |
14366 | END | |
14367 | END | |
14368 | END PushConstString ; | |
14369 | ||
14370 | ||
14371 | (* | |
14372 | PushParamSize - push the size of parameter, ParamNo, | |
14373 | of procedure Sym onto the ALU stack. | |
14374 | *) | |
14375 | ||
14376 | PROCEDURE PushParamSize (Sym: CARDINAL; ParamNo: CARDINAL) ; | |
14377 | VAR | |
14378 | p, Type: CARDINAL ; | |
14379 | BEGIN | |
14380 | CheckLegal(Sym) ; | |
14381 | Assert(IsProcedure(Sym) OR IsProcType(Sym)) ; | |
14382 | IF ParamNo=0 | |
14383 | THEN | |
14384 | PushSize(GetType(Sym)) | |
14385 | ELSE | |
14386 | (* | |
14387 | can use GetNthParam but 1..n returns parameter. | |
14388 | But 0 yields the function return type. | |
14389 | ||
14390 | Note that VAR Unbounded parameters and non VAR Unbounded parameters | |
14391 | contain the unbounded descriptor. VAR unbounded parameters | |
14392 | do NOT JUST contain an address re: other VAR parameters. | |
14393 | *) | |
14394 | IF IsVarParam(Sym, ParamNo) AND (NOT IsUnboundedParam(Sym, ParamNo)) | |
14395 | THEN | |
14396 | PushSize(Address) (* VAR parameters point to the variable *) | |
14397 | ELSE | |
14398 | p := GetNthParam(Sym, ParamNo) ; (* nth Parameter *) | |
14399 | (* | |
14400 | N.B. chose to get the Type of the parameter rather than the Var | |
14401 | because ProcType's have Type but no Var associated with them. | |
14402 | *) | |
14403 | Type := GetType(p) ; (* ie Variable from Procedure Sym *) | |
14404 | Assert(p#NulSym) ; (* If this fails then ParamNo is out of range *) | |
14405 | PushSize(Type) | |
14406 | END | |
14407 | END | |
14408 | END PushParamSize ; | |
14409 | ||
14410 | ||
14411 | (* | |
14412 | PushSumOfLocalVarSize - push the total size of all local variables | |
14413 | onto the ALU stack. | |
14414 | *) | |
14415 | ||
14416 | PROCEDURE PushSumOfLocalVarSize (Sym: CARDINAL) ; | |
14417 | VAR | |
14418 | pSym: PtrToSymbol ; | |
14419 | BEGIN | |
14420 | CheckLegal(Sym) ; | |
14421 | pSym := GetPsym(Sym) ; | |
14422 | WITH pSym^ DO | |
14423 | CASE SymbolType OF | |
14424 | ||
14425 | ProcedureSym, | |
14426 | DefImpSym, | |
14427 | ModuleSym : PushSize(Sym) | |
14428 | ||
14429 | ELSE | |
14430 | InternalError ('expecting Procedure, DefImp or Module symbol') | |
14431 | END | |
14432 | END | |
14433 | END PushSumOfLocalVarSize ; | |
14434 | ||
14435 | ||
14436 | (* | |
14437 | PushSumOfParamSize - push the total size of all parameters onto | |
14438 | the ALU stack. | |
14439 | *) | |
14440 | ||
14441 | PROCEDURE PushSumOfParamSize (Sym: CARDINAL) ; | |
14442 | VAR | |
14443 | pSym: PtrToSymbol ; | |
14444 | BEGIN | |
14445 | CheckLegal(Sym) ; | |
14446 | pSym := GetPsym(Sym) ; | |
14447 | WITH pSym^ DO | |
14448 | CASE SymbolType OF | |
14449 | ||
14450 | ProcedureSym: PushFrom(Procedure.TotalParamSize) | | |
14451 | ProcTypeSym : PushFrom(ProcType.TotalParamSize) | |
14452 | ||
14453 | ELSE | |
14454 | InternalError ('expecting Procedure or ProcType symbol') | |
14455 | END | |
14456 | END | |
14457 | END PushSumOfParamSize ; | |
14458 | ||
14459 | ||
14460 | (* | |
14461 | PushVarSize - pushes the size of a variable, Sym. | |
14462 | The runtime size of Sym will depend upon its addressing mode, | |
14463 | RightValue has size PushSize(GetType(Sym)) and | |
14464 | LeftValue has size PushSize(Address) since it points to a | |
14465 | variable. | |
14466 | *) | |
14467 | ||
14468 | PROCEDURE PushVarSize (Sym: CARDINAL) ; | |
14469 | BEGIN | |
14470 | CheckLegal(Sym) ; | |
14471 | Assert(IsVar(Sym)) ; | |
14472 | IF GetMode(Sym)=LeftValue | |
14473 | THEN | |
14474 | PushSize(Address) | |
14475 | ELSE | |
14476 | Assert(GetMode(Sym)=RightValue) ; | |
14477 | PushSize(GetType(Sym)) | |
14478 | END | |
14479 | END PushVarSize ; | |
14480 | ||
14481 | ||
14482 | (* | |
14483 | PopValue - pops the ALU stack into Value of Sym. | |
14484 | *) | |
14485 | ||
14486 | PROCEDURE PopValue (Sym: CARDINAL) ; | |
14487 | VAR | |
14488 | pSym: PtrToSymbol ; | |
14489 | BEGIN | |
14490 | CheckLegal(Sym) ; | |
14491 | pSym := GetPsym(Sym) ; | |
14492 | WITH pSym^ DO | |
14493 | CASE SymbolType OF | |
14494 | ||
14495 | ConstLitSym : PopInto(ConstLit.Value) | | |
14496 | ConstVarSym : PopInto(ConstVar.Value) | | |
14497 | EnumerationFieldSym : InternalError ('cannot pop into an enumeration field') | |
14498 | ||
14499 | ELSE | |
14500 | InternalError ('symbol type not expected') | |
14501 | END | |
14502 | END | |
14503 | END PopValue ; | |
14504 | ||
14505 | ||
14506 | (* | |
14507 | PopSize - pops the ALU stack into Size of Sym. | |
14508 | *) | |
14509 | ||
14510 | PROCEDURE PopSize (Sym: CARDINAL) ; | |
14511 | VAR | |
14512 | pSym: PtrToSymbol ; | |
14513 | BEGIN | |
14514 | CheckLegal(Sym) ; | |
14515 | pSym := GetPsym(Sym) ; | |
14516 | WITH pSym^ DO | |
14517 | CASE SymbolType OF | |
14518 | ||
14519 | ProcedureSym : PopInto(Procedure.Size) | | |
14520 | VarSym : PopInto(Var.Size) | | |
14521 | TypeSym : PopInto(Type.Size) | | |
14522 | RecordSym : PopInto(Record.Size) | | |
14523 | VarientSym : PopInto(Varient.Size) | | |
14524 | EnumerationSym : PopInto(Enumeration.Size) | | |
14525 | PointerSym : PopInto(Pointer.Size) | | |
14526 | ArraySym : PopInto(Array.Size) | | |
14527 | RecordFieldSym : PopInto(RecordField.Size) | | |
14528 | VarientFieldSym : PopInto(VarientField.Size) | | |
14529 | SubrangeSym : PopInto(Subrange.Size) | | |
14530 | SubscriptSym : PopInto(Subscript.Size) | | |
14531 | ProcTypeSym : PopInto(ProcType.Size) | | |
14532 | UnboundedSym : PopInto(Unbounded.Size) | | |
14533 | SetSym : PopInto(Set.Size) | |
14534 | ||
14535 | ELSE | |
14536 | InternalError ('not expecting this kind of symbol') | |
14537 | END | |
14538 | END | |
14539 | END PopSize ; | |
14540 | ||
14541 | ||
14542 | (* | |
14543 | PopOffset - pops the ALU stack into Offset of Sym. | |
14544 | *) | |
14545 | ||
14546 | PROCEDURE PopOffset (Sym: CARDINAL) ; | |
14547 | VAR | |
14548 | pSym: PtrToSymbol ; | |
14549 | BEGIN | |
14550 | CheckLegal(Sym) ; | |
14551 | pSym := GetPsym(Sym) ; | |
14552 | WITH pSym^ DO | |
14553 | CASE SymbolType OF | |
14554 | ||
14555 | VarSym : PopInto(Var.Offset) | | |
14556 | RecordFieldSym : PopInto(RecordField.Offset) | | |
14557 | VarientFieldSym : PopInto(VarientField.Offset) | |
14558 | ||
14559 | ELSE | |
14560 | InternalError ('not expecting this kind of symbol') | |
14561 | END | |
14562 | END | |
14563 | END PopOffset ; | |
14564 | ||
14565 | ||
14566 | (* | |
14567 | PopSumOfParamSize - pop the total value on the ALU stack as the | |
14568 | sum of all parameters. | |
14569 | *) | |
14570 | ||
14571 | PROCEDURE PopSumOfParamSize (Sym: CARDINAL) ; | |
14572 | VAR | |
14573 | pSym: PtrToSymbol ; | |
14574 | BEGIN | |
14575 | CheckLegal(Sym) ; | |
14576 | pSym := GetPsym(Sym) ; | |
14577 | WITH pSym^ DO | |
14578 | CASE SymbolType OF | |
14579 | ||
14580 | ProcedureSym: PopInto(Procedure.TotalParamSize) | | |
14581 | ProcTypeSym : PopInto(ProcType.TotalParamSize) | |
14582 | ||
14583 | ELSE | |
14584 | InternalError ('expecting Procedure or ProcType symbol') | |
14585 | END | |
14586 | END | |
14587 | END PopSumOfParamSize ; | |
14588 | ||
14589 | ||
14590 | (* | |
14591 | PutAlignment - assigns the alignment constant associated with, | |
14592 | type, with, align. | |
14593 | *) | |
14594 | ||
14595 | PROCEDURE PutAlignment (type: CARDINAL; align: CARDINAL) ; | |
14596 | VAR | |
14597 | pSym: PtrToSymbol ; | |
14598 | BEGIN | |
14599 | pSym := GetPsym(type) ; | |
14600 | WITH pSym^ DO | |
14601 | CASE SymbolType OF | |
14602 | ||
14603 | RecordSym : Record.Align := align | | |
14604 | RecordFieldSym: RecordField.Align := align | | |
14605 | TypeSym : Type.Align := align | | |
14606 | ArraySym : Array.Align := align | | |
2b783fe2 GM |
14607 | PointerSym : Pointer.Align := align | |
14608 | SubrangeSym : Subrange.Align := align | |
1eee94d3 GM |
14609 | |
14610 | ELSE | |
2b783fe2 | 14611 | InternalError ('expecting record, field, pointer, type, subrange or an array symbol') |
1eee94d3 GM |
14612 | END |
14613 | END | |
14614 | END PutAlignment ; | |
14615 | ||
14616 | ||
14617 | (* | |
14618 | GetAlignment - returns the alignment constant associated with, | |
14619 | type. | |
14620 | *) | |
14621 | ||
14622 | PROCEDURE GetAlignment (type: CARDINAL) : CARDINAL ; | |
14623 | VAR | |
14624 | pSym: PtrToSymbol ; | |
14625 | BEGIN | |
14626 | pSym := GetPsym(type) ; | |
14627 | WITH pSym^ DO | |
14628 | CASE SymbolType OF | |
14629 | ||
14630 | RecordSym : RETURN( Record.Align ) | | |
14631 | RecordFieldSym : RETURN( RecordField.Align ) | | |
14632 | TypeSym : RETURN( Type.Align ) | | |
14633 | ArraySym : RETURN( Array.Align ) | | |
14634 | PointerSym : RETURN( Pointer.Align ) | | |
14635 | VarientFieldSym: RETURN( GetAlignment(VarientField.Parent) ) | | |
2b783fe2 GM |
14636 | VarientSym : RETURN( GetAlignment(Varient.Parent) ) | |
14637 | SubrangeSym : RETURN( Subrange.Align ) | |
1eee94d3 GM |
14638 | |
14639 | ELSE | |
2b783fe2 | 14640 | InternalError ('expecting record, field, pointer, type, subrange or an array symbol') |
1eee94d3 GM |
14641 | END |
14642 | END | |
14643 | END GetAlignment ; | |
14644 | ||
14645 | ||
14646 | (* | |
14647 | PutDefaultRecordFieldAlignment - assigns, align, as the default alignment | |
14648 | to record, sym. | |
14649 | *) | |
14650 | ||
14651 | PROCEDURE PutDefaultRecordFieldAlignment (sym: CARDINAL; align: CARDINAL) ; | |
14652 | VAR | |
14653 | pSym: PtrToSymbol ; | |
14654 | BEGIN | |
14655 | pSym := GetPsym(sym) ; | |
14656 | WITH pSym^ DO | |
14657 | CASE SymbolType OF | |
14658 | ||
14659 | RecordSym: Record.DefaultAlign := align | |
14660 | ||
14661 | ELSE | |
14662 | InternalError ('expecting record symbol') | |
14663 | END | |
14664 | END | |
14665 | END PutDefaultRecordFieldAlignment ; | |
14666 | ||
14667 | ||
14668 | (* | |
14669 | GetDefaultRecordFieldAlignment - assigns, align, as the default alignment | |
14670 | to record, sym. | |
14671 | *) | |
14672 | ||
14673 | PROCEDURE GetDefaultRecordFieldAlignment (sym: CARDINAL) : CARDINAL ; | |
14674 | VAR | |
14675 | pSym: PtrToSymbol ; | |
14676 | BEGIN | |
14677 | pSym := GetPsym(sym) ; | |
14678 | WITH pSym^ DO | |
14679 | CASE SymbolType OF | |
14680 | ||
14681 | RecordSym : RETURN( Record.DefaultAlign ) | | |
14682 | VarientFieldSym: RETURN( GetDefaultRecordFieldAlignment(GetParent(sym)) ) | | |
14683 | VarientSym : RETURN( GetDefaultRecordFieldAlignment(GetParent(sym)) ) | |
14684 | ||
14685 | ELSE | |
14686 | InternalError ('expecting record symbol') | |
14687 | END | |
14688 | END | |
14689 | END GetDefaultRecordFieldAlignment ; | |
14690 | ||
14691 | ||
b0762d4c GM |
14692 | (* |
14693 | VarCheckReadInit - returns TRUE if sym has been initialized. | |
14694 | *) | |
14695 | ||
14696 | PROCEDURE VarCheckReadInit (sym: CARDINAL; mode: ModeOfAddr) : BOOLEAN ; | |
14697 | VAR | |
14698 | pSym: PtrToSymbol ; | |
14699 | BEGIN | |
14700 | IF IsVar (sym) | |
14701 | THEN | |
14702 | pSym := GetPsym (sym) ; | |
14703 | WITH pSym^ DO | |
14704 | CASE SymbolType OF | |
14705 | ||
14706 | VarSym: RETURN GetInitialized (Var.InitState[mode]) | |
14707 | ||
14708 | ELSE | |
14709 | END | |
14710 | END | |
14711 | END ; | |
14712 | RETURN FALSE | |
14713 | END VarCheckReadInit ; | |
14714 | ||
14715 | ||
14716 | (* | |
14717 | VarInitState - initializes the init state for variable sym. | |
14718 | *) | |
14719 | ||
14720 | PROCEDURE VarInitState (sym: CARDINAL) ; | |
14721 | VAR | |
14722 | pSym: PtrToSymbol ; | |
14723 | BEGIN | |
14724 | IF IsVar (sym) | |
14725 | THEN | |
14726 | pSym := GetPsym (sym) ; | |
14727 | WITH pSym^ DO | |
14728 | CASE SymbolType OF | |
14729 | ||
14730 | VarSym: ConfigSymInit (Var.InitState[LeftValue], sym) ; | |
14731 | ConfigSymInit (Var.InitState[RightValue], sym) | |
14732 | ||
14733 | ELSE | |
14734 | END | |
14735 | END | |
14736 | END | |
14737 | END VarInitState ; | |
14738 | ||
14739 | ||
14740 | (* | |
14741 | PutVarInitialized - set sym as initialized. | |
14742 | *) | |
14743 | ||
14744 | PROCEDURE PutVarInitialized (sym: CARDINAL; mode: ModeOfAddr) ; | |
14745 | VAR | |
14746 | pSym: PtrToSymbol ; | |
14747 | BEGIN | |
14748 | IF IsVar (sym) | |
14749 | THEN | |
14750 | pSym := GetPsym (sym) ; | |
14751 | WITH pSym^ DO | |
14752 | CASE SymbolType OF | |
14753 | ||
14754 | VarSym: WITH Var DO | |
14755 | SetInitialized (InitState[mode]) | |
14756 | END | |
14757 | ||
14758 | ELSE | |
14759 | END | |
14760 | END | |
14761 | END | |
14762 | END PutVarInitialized ; | |
14763 | ||
14764 | ||
14765 | (* | |
14766 | PutVarFieldInitialized - records that field has been initialized with | |
14767 | variable sym. TRUE is returned if the field | |
14768 | is detected and changed to initialized. | |
14769 | *) | |
14770 | ||
14771 | PROCEDURE PutVarFieldInitialized (sym: CARDINAL; mode: ModeOfAddr; | |
14772 | fieldlist: List) : BOOLEAN ; | |
14773 | VAR | |
14774 | pSym: PtrToSymbol ; | |
14775 | BEGIN | |
14776 | IF IsVar (sym) | |
14777 | THEN | |
14778 | pSym := GetPsym (sym) ; | |
14779 | WITH pSym^ DO | |
14780 | CASE SymbolType OF | |
14781 | ||
14782 | VarSym: WITH Var DO | |
14783 | RETURN SetFieldInitialized (InitState[mode], fieldlist) | |
14784 | END | |
14785 | ||
14786 | ELSE | |
14787 | END | |
14788 | END | |
14789 | END ; | |
14790 | RETURN FALSE | |
14791 | END PutVarFieldInitialized ; | |
14792 | ||
14793 | ||
14794 | (* | |
14795 | GetVarFieldInitialized - return TRUE if fieldlist has been initialized | |
14796 | within variable sym. | |
14797 | *) | |
14798 | ||
14799 | PROCEDURE GetVarFieldInitialized (sym: CARDINAL; mode: ModeOfAddr; | |
14800 | fieldlist: List) : BOOLEAN ; | |
14801 | VAR | |
14802 | pSym: PtrToSymbol ; | |
14803 | BEGIN | |
14804 | IF IsVar (sym) | |
14805 | THEN | |
14806 | pSym := GetPsym (sym) ; | |
14807 | WITH pSym^ DO | |
14808 | CASE SymbolType OF | |
14809 | ||
14810 | VarSym: WITH Var DO | |
14811 | RETURN GetFieldInitialized (InitState[mode], fieldlist) | |
14812 | END | |
14813 | ||
14814 | ELSE | |
14815 | END | |
14816 | END | |
14817 | END ; | |
14818 | RETURN FALSE | |
14819 | END GetVarFieldInitialized ; | |
14820 | ||
14821 | ||
14822 | (* | |
14823 | PrintInitialized - display variable sym initialization state. | |
14824 | *) | |
14825 | ||
14826 | PROCEDURE PrintInitialized (sym: CARDINAL) ; | |
14827 | VAR | |
14828 | pSym: PtrToSymbol ; | |
14829 | BEGIN | |
14830 | IF IsVar (sym) | |
14831 | THEN | |
14832 | pSym := GetPsym (sym) ; | |
14833 | WITH pSym^ DO | |
14834 | CASE SymbolType OF | |
14835 | ||
14836 | VarSym: printf0 ("LeftMode init: ") ; | |
14837 | PrintSymInit (Var.InitState[LeftValue]) ; | |
14838 | printf0 ("RightMode init: ") ; | |
14839 | PrintSymInit (Var.InitState[RightValue]) | |
14840 | ||
14841 | ELSE | |
14842 | END | |
14843 | END | |
14844 | END | |
14845 | END PrintInitialized ; | |
14846 | ||
14847 | ||
1eee94d3 GM |
14848 | (* |
14849 | DumpSymbols - display all symbol numbers and their type. | |
14850 | *) | |
14851 | ||
14852 | (* | |
14853 | PROCEDURE DumpSymbols ; | |
14854 | VAR | |
14855 | pSym: PtrToSymbol ; | |
14856 | sym : CARDINAL ; | |
14857 | BEGIN | |
14858 | sym := 1 ; | |
14859 | WHILE sym <= FinalSymbol () DO | |
14860 | pSym := GetPsym(sym) ; | |
14861 | printf ("%d ", sym) ; | |
14862 | WITH pSym^ DO | |
14863 | CASE SymbolType OF | |
14864 | ||
14865 | RecordSym: printf ("RecordSym") | | |
14866 | VarientSym: printf ("VarientSym") | | |
14867 | DummySym: printf ("DummySym") | | |
14868 | VarSym: printf ("VarSym") | | |
14869 | EnumerationSym: printf ("EnumerationSym") | | |
14870 | SubrangeSym: printf ("SubrangeSym") | | |
14871 | ArraySym: printf ("ArraySym") | | |
14872 | ConstStringSym: printf ("ConstStringSym") | | |
14873 | ConstVarSym: printf ("ConstVarSym") | | |
14874 | ConstLitSym: printf ("ConstLitSym") | | |
14875 | VarParamSym: printf ("VarParamSym") | | |
14876 | ParamSym: printf ("ParamSym") | | |
14877 | PointerSym: printf ("PointerSym") | | |
14878 | UndefinedSym: printf ("UndefinedSym") | | |
14879 | TypeSym: printf ("TypeSym") | | |
14880 | RecordFieldSym: printf ("RecordFieldSym") | | |
14881 | VarientFieldSym: printf ("VarientFieldSym") | | |
14882 | EnumerationFieldSym: printf ("EnumerationFieldSym") | | |
14883 | DefImpSym: printf ("DefImpSym") | | |
14884 | ModuleSym: printf ("ModuleSym") | | |
14885 | SetSym: printf ("SetSym") | | |
14886 | ProcedureSym: printf ("ProcedureSym") | | |
14887 | ProcTypeSym: printf ("ProcTypeSym") | | |
14888 | SubscriptSym: printf ("SubscriptSym") | | |
14889 | UnboundedSym: printf ("UnboundedSym") | | |
14890 | GnuAsmSym: printf ("GnuAsmSym") | | |
14891 | InterfaceSym: printf ("InterfaceSym") | | |
14892 | ObjectSym: printf ("ObjectSym") | | |
14893 | PartialUnboundedSym: printf ("PartialUnboundedSym") | | |
14894 | TupleSym: printf ("TupleSym") | | |
14895 | OAFamilySym: printf ("OAFamilySym") | | |
14896 | EquivSym: printf ("EquivSym") | | |
14897 | ErrorSym: printf ("ErrorSym") | |
14898 | ||
14899 | END | |
14900 | END ; | |
14901 | printf ("\n") ; | |
14902 | INC (sym) | |
14903 | END | |
14904 | END DumpSymbols ; | |
14905 | *) | |
14906 | ||
14907 | ||
14908 | (* | |
14909 | GetErrorScope - returns the error scope for a symbol. | |
14910 | The error scope is the title scope which is used to | |
14911 | announce the symbol in the GCC error message. | |
14912 | *) | |
14913 | ||
14914 | PROCEDURE GetErrorScope (sym: CARDINAL) : ErrorScope ; | |
14915 | VAR | |
14916 | pSym: PtrToSymbol ; | |
14917 | BEGIN | |
14918 | pSym := GetPsym (sym) ; | |
14919 | WITH pSym^ DO | |
14920 | CASE SymbolType OF | |
14921 | ||
14922 | ProcedureSym: RETURN Procedure.errorScope | | |
14923 | ModuleSym : RETURN Module.errorScope | | |
14924 | DefImpSym : RETURN DefImp.errorScope | | |
14925 | UndefinedSym: RETURN Undefined.errorScope | |
14926 | ||
14927 | ELSE | |
14928 | InternalError ('expecting procedure, module or defimp symbol') | |
14929 | END | |
14930 | END | |
14931 | END GetErrorScope ; | |
14932 | ||
14933 | ||
14934 | (* | |
14935 | PutErrorScope - sets the error scope for a symbol. | |
14936 | The error scope is the title scope which is used to | |
14937 | announce the symbol in the GCC error message. | |
14938 | *) | |
14939 | ||
14940 | (* | |
14941 | PROCEDURE PutErrorScope (sym: CARDINAL; errorScope: ErrorScope) ; | |
14942 | VAR | |
14943 | pSym: PtrToSymbol ; | |
14944 | BEGIN | |
14945 | pSym := GetPsym (type) ; | |
14946 | WITH pSym^ DO | |
14947 | CASE SymbolType OF | |
14948 | ||
14949 | ProcedureSym: Procedure.errorScope := errorScope | | |
14950 | ModuleSym : Module.errorScope := errorScope | | |
14951 | DefImpSym : DefImp.errorScope := errorScope | |
14952 | ||
14953 | ELSE | |
14954 | InternalError ('expecting procedure, module or defimp symbol') | |
14955 | END | |
14956 | END | |
14957 | END PutErrorScope ; | |
14958 | *) | |
14959 | ||
14960 | ||
14961 | (* | |
14962 | IsLegal - returns TRUE if, sym, is a legal symbol. | |
14963 | *) | |
14964 | ||
14965 | PROCEDURE IsLegal (sym: CARDINAL) : BOOLEAN ; | |
14966 | BEGIN | |
14967 | RETURN sym < FreeSymbol | |
14968 | END IsLegal ; | |
14969 | ||
14970 | ||
14971 | BEGIN | |
14972 | Init | |
14973 | END SymbolTable. |