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7f4edbcb | 1 | /* Definitions for c-common.c. |
517cbe13 | 2 | Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
928c19bb | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
66647d44 | 4 | Free Software Foundation, Inc. |
7f4edbcb | 5 | |
1322177d | 6 | This file is part of GCC. |
7f4edbcb | 7 | |
1322177d LB |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 11 | version. |
7f4edbcb | 12 | |
1322177d LB |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
7f4edbcb BS |
17 | |
18 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
7f4edbcb | 21 | |
0e5921e8 ZW |
22 | #ifndef GCC_C_COMMON_H |
23 | #define GCC_C_COMMON_H | |
24 | ||
8f17b5c5 | 25 | #include "splay-tree.h" |
2a967f3d | 26 | #include "cpplib.h" |
d07605f5 | 27 | #include "ggc.h" |
8f17b5c5 | 28 | |
f2c5f623 | 29 | /* Usage of TREE_LANG_FLAG_?: |
325c3691 | 30 | 0: TREE_NEGATED_INT (in INTEGER_CST). |
f2c5f623 | 31 | IDENTIFIER_MARKED (used by search routines). |
f2c5f623 | 32 | DECL_PRETTY_FUNCTION_P (in VAR_DECL) |
928c19bb | 33 | C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C) |
f2c5f623 | 34 | 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) |
325c3691 | 35 | STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) |
928c19bb | 36 | C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C) |
6de9cd9a | 37 | 2: unused |
174283a3 | 38 | 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) |
325c3691 | 39 | 4: unused |
f2c5f623 BC |
40 | */ |
41 | ||
0e5921e8 | 42 | /* Reserved identifiers. This is the union of all the keywords for C, |
40f03658 | 43 | C++, and Objective-C. All the type modifiers have to be in one |
0e5921e8 ZW |
44 | block at the beginning, because they are used as mask bits. There |
45 | are 27 type modifiers; if we add many more we will have to redesign | |
46 | the mask mechanism. */ | |
f09f1de5 MM |
47 | |
48 | enum rid | |
49 | { | |
0e5921e8 | 50 | /* Modifiers: */ |
2ba84f36 | 51 | /* C, in empirical order of frequency. */ |
0e5921e8 ZW |
52 | RID_STATIC = 0, |
53 | RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, | |
54 | RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, | |
55 | RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, | |
56 | ||
57 | /* C extensions */ | |
ab22c1fa | 58 | RID_COMPLEX, RID_THREAD, RID_SAT, |
0e5921e8 ZW |
59 | |
60 | /* C++ */ | |
61 | RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, | |
62 | ||
63 | /* ObjC */ | |
b8363a24 | 64 | RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, |
0e5921e8 ZW |
65 | |
66 | /* C */ | |
67 | RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, | |
68 | RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, | |
69 | RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, | |
70 | RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, | |
71 | RID_SIZEOF, | |
72 | ||
73 | /* C extensions */ | |
74 | RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, | |
da5b307a JM |
75 | RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, |
76 | RID_TYPES_COMPATIBLE_P, | |
9a8ce21f | 77 | RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, |
ab22c1fa | 78 | RID_FRACT, RID_ACCUM, |
0e5921e8 | 79 | |
eea1139b ILT |
80 | /* This means to warn that this is a C++ keyword, and then treat it |
81 | as a normal identifier. */ | |
82 | RID_CXX_COMPAT_WARN, | |
83 | ||
0ba8a114 NS |
84 | /* Too many ways of getting the name of a function as a string */ |
85 | RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, | |
86 | ||
0e5921e8 ZW |
87 | /* C++ */ |
88 | RID_BOOL, RID_WCHAR, RID_CLASS, | |
89 | RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, | |
90 | RID_TEMPLATE, RID_NULL, RID_CATCH, | |
91 | RID_DELETE, RID_FALSE, RID_NAMESPACE, | |
c22cacf3 MS |
92 | RID_NEW, RID_OFFSETOF, RID_OPERATOR, |
93 | RID_THIS, RID_THROW, RID_TRUE, | |
94 | RID_TRY, RID_TYPENAME, RID_TYPEID, | |
b6baa67d | 95 | RID_USING, RID_CHAR16, RID_CHAR32, |
0e5921e8 ZW |
96 | |
97 | /* casts */ | |
98 | RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, | |
99 | ||
cb68ec50 PC |
100 | /* C++ extensions */ |
101 | RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, | |
102 | RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, | |
103 | RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, | |
104 | RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, | |
105 | RID_IS_ABSTRACT, RID_IS_BASE_OF, | |
106 | RID_IS_CONVERTIBLE_TO, RID_IS_CLASS, | |
107 | RID_IS_EMPTY, RID_IS_ENUM, | |
108 | RID_IS_POD, RID_IS_POLYMORPHIC, | |
109 | RID_IS_UNION, | |
110 | ||
218f0015 | 111 | /* C++0x */ |
3ad6a8e1 | 112 | RID_STATIC_ASSERT, RID_DECLTYPE, |
218f0015 | 113 | |
40f03658 | 114 | /* Objective-C */ |
3a3589b4 | 115 | RID_AT_ENCODE, RID_AT_END, |
0e5921e8 ZW |
116 | RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, |
117 | RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, | |
c22cacf3 | 118 | RID_AT_PROTOCOL, RID_AT_SELECTOR, |
264fa2db ZL |
119 | RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, |
120 | RID_AT_FINALLY, RID_AT_SYNCHRONIZED, | |
121 | RID_AT_INTERFACE, | |
0e5921e8 ZW |
122 | RID_AT_IMPLEMENTATION, |
123 | ||
124 | RID_MAX, | |
125 | ||
126 | RID_FIRST_MODIFIER = RID_STATIC, | |
b8363a24 ZW |
127 | RID_LAST_MODIFIER = RID_ONEWAY, |
128 | ||
e1f1ee86 | 129 | RID_FIRST_CXX0X = RID_STATIC_ASSERT, |
3ad6a8e1 | 130 | RID_LAST_CXX0X = RID_DECLTYPE, |
b8363a24 ZW |
131 | RID_FIRST_AT = RID_AT_ENCODE, |
132 | RID_LAST_AT = RID_AT_IMPLEMENTATION, | |
133 | RID_FIRST_PQ = RID_IN, | |
134 | RID_LAST_PQ = RID_ONEWAY | |
f09f1de5 MM |
135 | }; |
136 | ||
b8363a24 | 137 | #define OBJC_IS_AT_KEYWORD(rid) \ |
3f75a254 JM |
138 | ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ |
139 | (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) | |
b8363a24 ZW |
140 | |
141 | #define OBJC_IS_PQ_KEYWORD(rid) \ | |
3f75a254 JM |
142 | ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ |
143 | (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) | |
b8363a24 | 144 | |
f09f1de5 MM |
145 | /* The elements of `ridpointers' are identifier nodes for the reserved |
146 | type names and storage classes. It is indexed by a RID_... value. */ | |
3f75a254 | 147 | extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; |
f09f1de5 | 148 | |
7f4edbcb BS |
149 | /* Standard named or nameless data types of the C compiler. */ |
150 | ||
151 | enum c_tree_index | |
152 | { | |
b6baa67d KVH |
153 | CTI_CHAR16_TYPE, |
154 | CTI_CHAR32_TYPE, | |
7f4edbcb | 155 | CTI_WCHAR_TYPE, |
207bf79d | 156 | CTI_UNDERLYING_WCHAR_TYPE, |
c5ab7f91 | 157 | CTI_WINT_TYPE, |
cd732418 JM |
158 | CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ |
159 | CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ | |
b15ad712 JM |
160 | CTI_INTMAX_TYPE, |
161 | CTI_UINTMAX_TYPE, | |
7f4edbcb BS |
162 | CTI_WIDEST_INT_LIT_TYPE, |
163 | CTI_WIDEST_UINT_LIT_TYPE, | |
164 | ||
207bf79d JM |
165 | /* Types for <stdint.h>, that may not be defined on all |
166 | targets. */ | |
167 | CTI_SIG_ATOMIC_TYPE, | |
168 | CTI_INT8_TYPE, | |
169 | CTI_INT16_TYPE, | |
170 | CTI_INT32_TYPE, | |
171 | CTI_INT64_TYPE, | |
172 | CTI_UINT8_TYPE, | |
173 | CTI_UINT16_TYPE, | |
174 | CTI_UINT32_TYPE, | |
175 | CTI_UINT64_TYPE, | |
176 | CTI_INT_LEAST8_TYPE, | |
177 | CTI_INT_LEAST16_TYPE, | |
178 | CTI_INT_LEAST32_TYPE, | |
179 | CTI_INT_LEAST64_TYPE, | |
180 | CTI_UINT_LEAST8_TYPE, | |
181 | CTI_UINT_LEAST16_TYPE, | |
182 | CTI_UINT_LEAST32_TYPE, | |
183 | CTI_UINT_LEAST64_TYPE, | |
184 | CTI_INT_FAST8_TYPE, | |
185 | CTI_INT_FAST16_TYPE, | |
186 | CTI_INT_FAST32_TYPE, | |
187 | CTI_INT_FAST64_TYPE, | |
188 | CTI_UINT_FAST8_TYPE, | |
189 | CTI_UINT_FAST16_TYPE, | |
190 | CTI_UINT_FAST32_TYPE, | |
191 | CTI_UINT_FAST64_TYPE, | |
192 | CTI_INTPTR_TYPE, | |
193 | CTI_UINTPTR_TYPE, | |
194 | ||
7f4edbcb | 195 | CTI_CHAR_ARRAY_TYPE, |
b6baa67d KVH |
196 | CTI_CHAR16_ARRAY_TYPE, |
197 | CTI_CHAR32_ARRAY_TYPE, | |
7f4edbcb BS |
198 | CTI_WCHAR_ARRAY_TYPE, |
199 | CTI_INT_ARRAY_TYPE, | |
200 | CTI_STRING_TYPE, | |
201 | CTI_CONST_STRING_TYPE, | |
202 | ||
19552aa5 | 203 | /* Type for boolean expressions (bool in C++, int in C). */ |
de7df9eb JM |
204 | CTI_TRUTHVALUE_TYPE, |
205 | CTI_TRUTHVALUE_TRUE, | |
206 | CTI_TRUTHVALUE_FALSE, | |
207 | ||
7f4edbcb | 208 | CTI_DEFAULT_FUNCTION_TYPE, |
7f4edbcb | 209 | |
2ba84f36 | 210 | /* These are not types, but we have to look them up all the time. */ |
0ba8a114 NS |
211 | CTI_FUNCTION_NAME_DECL, |
212 | CTI_PRETTY_FUNCTION_NAME_DECL, | |
213 | CTI_C99_FUNCTION_NAME_DECL, | |
214 | CTI_SAVED_FUNCTION_NAME_DECLS, | |
c22cacf3 | 215 | |
ae499cce MM |
216 | CTI_VOID_ZERO, |
217 | ||
b2f97e4a MM |
218 | CTI_NULL, |
219 | ||
7f4edbcb BS |
220 | CTI_MAX |
221 | }; | |
222 | ||
5950c3c9 BE |
223 | #define C_CPP_HASHNODE(id) \ |
224 | (&(((struct c_common_identifier *) (id))->node)) | |
d75d71e0 ILT |
225 | #define C_RID_CODE(id) \ |
226 | ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) | |
227 | #define C_SET_RID_CODE(id, code) \ | |
228 | (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) | |
2a967f3d NB |
229 | |
230 | /* Identifier part common to the C front ends. Inherits from | |
231 | tree_identifier, despite appearances. */ | |
e2500fed | 232 | struct c_common_identifier GTY(()) |
2a967f3d NB |
233 | { |
234 | struct tree_common common; | |
17211ab5 | 235 | struct cpp_hashnode node; |
2a967f3d NB |
236 | }; |
237 | ||
eea1139b ILT |
238 | /* An entry in the reserved keyword table. */ |
239 | ||
240 | struct c_common_resword | |
241 | { | |
242 | const char *const word; | |
243 | ENUM_BITFIELD(rid) const rid : 16; | |
244 | const unsigned int disable : 16; | |
245 | }; | |
246 | ||
247 | /* Disable mask. Keywords are disabled if (reswords[i].disable & | |
248 | mask) is _true_. Thus for keywords which are present in all | |
249 | languages the disable field is zero. */ | |
250 | ||
251 | #define D_CONLY 0x001 /* C only (not in C++). */ | |
252 | #define D_CXXONLY 0x002 /* C++ only (not in C). */ | |
253 | #define D_C99 0x004 /* In C, C99 only. */ | |
254 | #define D_CXX0X 0x008 /* In C++, C++0X only. */ | |
255 | #define D_EXT 0x010 /* GCC extension. */ | |
256 | #define D_EXT89 0x020 /* GCC extension incorporated in C99. */ | |
257 | #define D_ASM 0x040 /* Disabled by -fno-asm. */ | |
258 | #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ | |
259 | #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ | |
260 | #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ | |
261 | ||
262 | /* The reserved keyword table. */ | |
263 | extern const struct c_common_resword c_common_reswords[]; | |
264 | ||
265 | /* The number of items in the reserved keyword table. */ | |
266 | extern const unsigned int num_c_common_reswords; | |
267 | ||
b6baa67d KVH |
268 | #define char16_type_node c_global_trees[CTI_CHAR16_TYPE] |
269 | #define char32_type_node c_global_trees[CTI_CHAR32_TYPE] | |
7f4edbcb | 270 | #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] |
207bf79d | 271 | #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] |
c5ab7f91 | 272 | #define wint_type_node c_global_trees[CTI_WINT_TYPE] |
cd732418 JM |
273 | #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] |
274 | #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] | |
b15ad712 JM |
275 | #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] |
276 | #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] | |
7f4edbcb BS |
277 | #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] |
278 | #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] | |
279 | ||
207bf79d JM |
280 | #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] |
281 | #define int8_type_node c_global_trees[CTI_INT8_TYPE] | |
282 | #define int16_type_node c_global_trees[CTI_INT16_TYPE] | |
283 | #define int32_type_node c_global_trees[CTI_INT32_TYPE] | |
284 | #define int64_type_node c_global_trees[CTI_INT64_TYPE] | |
285 | #define uint8_type_node c_global_trees[CTI_UINT8_TYPE] | |
286 | #define uint16_type_node c_global_trees[CTI_UINT16_TYPE] | |
287 | #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] | |
288 | #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] | |
289 | #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] | |
290 | #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] | |
291 | #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] | |
292 | #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] | |
293 | #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] | |
294 | #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] | |
295 | #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] | |
296 | #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] | |
297 | #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] | |
298 | #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] | |
299 | #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] | |
300 | #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] | |
301 | #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] | |
302 | #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] | |
303 | #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] | |
304 | #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] | |
305 | #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] | |
306 | #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] | |
307 | ||
de7df9eb JM |
308 | #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] |
309 | #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] | |
310 | #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] | |
19552aa5 | 311 | |
7f4edbcb | 312 | #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] |
b6baa67d KVH |
313 | #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] |
314 | #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] | |
7f4edbcb BS |
315 | #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] |
316 | #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] | |
317 | #define string_type_node c_global_trees[CTI_STRING_TYPE] | |
318 | #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] | |
319 | ||
320 | #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] | |
7f4edbcb | 321 | |
0ba8a114 NS |
322 | #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] |
323 | #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] | |
324 | #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] | |
325 | #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] | |
63ad61ed | 326 | |
ae499cce MM |
327 | /* A node for `((void) 0)'. */ |
328 | #define void_zero_node c_global_trees[CTI_VOID_ZERO] | |
329 | ||
b2f97e4a MM |
330 | /* The node for C++ `__null'. */ |
331 | #define null_node c_global_trees[CTI_NULL] | |
332 | ||
e2500fed | 333 | extern GTY(()) tree c_global_trees[CTI_MAX]; |
ab76ca54 | 334 | |
e0a21ab9 KH |
335 | /* In a RECORD_TYPE, a sorted array of the fields of the type, not a |
336 | tree for size reasons. */ | |
d07605f5 AP |
337 | struct sorted_fields_type GTY(()) |
338 | { | |
339 | int len; | |
340 | tree GTY((length ("%h.len"))) elts[1]; | |
341 | }; | |
342 | ||
8f17b5c5 MM |
343 | /* Mark which labels are explicitly declared. |
344 | These may be shadowed, and may be referenced from nested functions. */ | |
345 | #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) | |
346 | ||
ab76ca54 MM |
347 | typedef enum c_language_kind |
348 | { | |
37fa72e9 NB |
349 | clk_c = 0, /* C90, C94 or C99 */ |
350 | clk_objc = 1, /* clk_c with ObjC features. */ | |
351 | clk_cxx = 2, /* ANSI/ISO C++ */ | |
352 | clk_objcxx = 3 /* clk_cxx with ObjC features. */ | |
21c7361e | 353 | } |
ab76ca54 MM |
354 | c_language_kind; |
355 | ||
37fa72e9 NB |
356 | /* To test for a specific language use c_language, defined by each |
357 | front end. For "ObjC features" or "not C++" use the macros. */ | |
358 | extern c_language_kind c_language; | |
359 | ||
360 | #define c_dialect_cxx() (c_language & clk_cxx) | |
361 | #define c_dialect_objc() (c_language & clk_objc) | |
362 | ||
ae499cce MM |
363 | /* Information about a statement tree. */ |
364 | ||
e2500fed | 365 | struct stmt_tree_s GTY(()) { |
35fd3193 | 366 | /* The current statement list being collected. */ |
325c3691 RH |
367 | tree x_cur_stmt_list; |
368 | ||
da7d8304 | 369 | /* In C++, Nonzero if we should treat statements as full |
ae499cce MM |
370 | expressions. In particular, this variable is no-zero if at the |
371 | end of a statement we should destroy any temporaries created | |
372 | during that statement. Similarly, if, at the end of a block, we | |
373 | should destroy any local variables in this block. Normally, this | |
da7d8304 | 374 | variable is nonzero, since those are the normal semantics of |
ae499cce MM |
375 | C++. |
376 | ||
377 | However, in order to represent aggregate initialization code as | |
378 | tree structure, we use statement-expressions. The statements | |
379 | within the statement expression should not result in cleanups | |
21c7361e | 380 | being run until the entire enclosing statement is complete. |
ae499cce MM |
381 | |
382 | This flag has no effect in C. */ | |
21c7361e | 383 | int stmts_are_full_exprs_p; |
ae499cce MM |
384 | }; |
385 | ||
386 | typedef struct stmt_tree_s *stmt_tree; | |
387 | ||
388 | /* Global state pertinent to the current function. Some C dialects | |
389 | extend this structure with additional fields. */ | |
390 | ||
e2500fed | 391 | struct c_language_function GTY(()) { |
ae499cce MM |
392 | /* While we are parsing the function, this contains information |
393 | about the statement-tree that we are building. */ | |
394 | struct stmt_tree_s x_stmt_tree; | |
395 | }; | |
396 | ||
35fd3193 | 397 | /* When building a statement-tree, this is the current statement list |
325c3691 | 398 | being collected. It's TREE_CHAIN is a back-pointer to the previous |
35fd3193 | 399 | statement list. */ |
ae499cce | 400 | |
325c3691 | 401 | #define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list) |
8f17b5c5 MM |
402 | |
403 | /* Language-specific hooks. */ | |
404 | ||
4684cd27 MM |
405 | /* If non-NULL, this function is called after a precompile header file |
406 | is loaded. */ | |
407 | extern void (*lang_post_pch_load) (void); | |
408 | ||
f75fbaf7 ZW |
409 | extern void push_file_scope (void); |
410 | extern void pop_file_scope (void); | |
35b1a6fa | 411 | extern stmt_tree current_stmt_tree (void); |
325c3691 | 412 | extern tree push_stmt_list (void); |
325c3691 | 413 | extern tree pop_stmt_list (tree); |
35b1a6fa | 414 | extern tree add_stmt (tree); |
325c3691 | 415 | extern void push_cleanup (tree, tree, bool); |
953ff289 DN |
416 | extern tree pushdecl_top_level (tree); |
417 | extern tree pushdecl (tree); | |
c9f9eb5d AH |
418 | extern tree build_modify_expr (location_t, tree, enum tree_code, tree); |
419 | extern tree build_indirect_ref (location_t, tree, const char *); | |
35b1a6fa | 420 | |
3c79fa86 | 421 | extern int c_expand_decl (tree); |
c1e14513 | 422 | |
d07605f5 | 423 | extern int field_decl_cmp (const void *, const void *); |
c22cacf3 MS |
424 | extern void resort_sorted_fields (void *, void *, gt_pointer_operator, |
425 | void *); | |
58f9752a | 426 | extern bool has_c_linkage (const_tree decl); |
17211ab5 | 427 | \f |
4078b403 NB |
428 | /* Switches common to the C front ends. */ |
429 | ||
aaf93206 | 430 | /* Nonzero if prepreprocessing only. */ |
17211ab5 | 431 | |
aaf93206 NB |
432 | extern int flag_preprocess_only; |
433 | ||
264fa2db ZL |
434 | /* Zero means that faster, ...NonNil variants of objc_msgSend... |
435 | calls will be used in ObjC; passing nil receivers to such calls | |
436 | will most likely result in crashes. */ | |
437 | extern int flag_nil_receivers; | |
438 | ||
439 | /* Nonzero means that we will allow new ObjC exception syntax (@throw, | |
440 | @try, etc.) in source code. */ | |
441 | extern int flag_objc_exceptions; | |
442 | ||
093c7153 RH |
443 | /* Nonzero means that we generate NeXT setjmp based exceptions. */ |
444 | extern int flag_objc_sjlj_exceptions; | |
445 | ||
264fa2db ZL |
446 | /* Nonzero means that code generation will be altered to support |
447 | "zero-link" execution. This currently affects ObjC only, but may | |
448 | affect other languages in the future. */ | |
449 | extern int flag_zero_link; | |
450 | ||
451 | /* Nonzero means emit an '__OBJC, __image_info' for the current translation | |
452 | unit. It will inform the ObjC runtime that class definition(s) herein | |
453 | contained are to replace one(s) previously loaded. */ | |
454 | extern int flag_replace_objc_classes; | |
455 | ||
63973df3 NB |
456 | /* Nonzero means don't output line number information. */ |
457 | ||
458 | extern char flag_no_line_commands; | |
459 | ||
460 | /* Nonzero causes -E output not to be done, but directives such as | |
461 | #define that have side effects are still obeyed. */ | |
462 | ||
463 | extern char flag_no_output; | |
464 | ||
93d45d9e JM |
465 | /* Nonzero means dump macros in some fashion; contains the 'D', 'M', |
466 | 'N' or 'U' of the command line switch. */ | |
63973df3 NB |
467 | |
468 | extern char flag_dump_macros; | |
469 | ||
470 | /* Nonzero means pass #include lines through to the output. */ | |
471 | ||
472 | extern char flag_dump_includes; | |
473 | ||
c0d578e6 GK |
474 | /* Nonzero means process PCH files while preprocessing. */ |
475 | ||
476 | extern bool flag_pch_preprocess; | |
477 | ||
17211ab5 GK |
478 | /* The file name to which we should write a precompiled header, or |
479 | NULL if no header will be written in this compile. */ | |
480 | ||
481 | extern const char *pch_file; | |
482 | ||
3df89291 NB |
483 | /* Nonzero if an ISO standard was selected. It rejects macros in the |
484 | user's namespace. */ | |
17211ab5 | 485 | |
3df89291 NB |
486 | extern int flag_iso; |
487 | ||
488 | /* Nonzero if -undef was given. It suppresses target built-in macros | |
489 | and assertions. */ | |
17211ab5 | 490 | |
3df89291 NB |
491 | extern int flag_undef; |
492 | ||
4078b403 | 493 | /* Nonzero means don't recognize the non-ANSI builtin functions. */ |
ab76ca54 | 494 | |
4078b403 NB |
495 | extern int flag_no_builtin; |
496 | ||
497 | /* Nonzero means don't recognize the non-ANSI builtin functions. | |
498 | -ansi sets this. */ | |
499 | ||
500 | extern int flag_no_nonansi_builtin; | |
ab76ca54 | 501 | |
eaa7c03f JM |
502 | /* Nonzero means give `double' the same size as `float'. */ |
503 | ||
504 | extern int flag_short_double; | |
505 | ||
506 | /* Nonzero means give `wchar_t' the same size as `short'. */ | |
507 | ||
508 | extern int flag_short_wchar; | |
509 | ||
00c8e9f6 MS |
510 | /* Nonzero means allow implicit conversions between vectors with |
511 | differing numbers of subparts and/or differing element types. */ | |
512 | extern int flag_lax_vector_conversions; | |
513 | ||
750491fc RH |
514 | /* Nonzero means allow Microsoft extensions without warnings or errors. */ |
515 | extern int flag_ms_extensions; | |
516 | ||
4078b403 NB |
517 | /* Nonzero means don't recognize the keyword `asm'. */ |
518 | ||
519 | extern int flag_no_asm; | |
520 | ||
521 | /* Nonzero means give string constants the type `const char *', as mandated | |
522 | by the standard. */ | |
523 | ||
524 | extern int flag_const_strings; | |
525 | ||
4078b403 NB |
526 | /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */ |
527 | ||
528 | extern int flag_signed_bitfields; | |
4078b403 | 529 | |
c22cacf3 | 530 | /* Warn about #pragma directives that are not recognized. */ |
4078b403 | 531 | |
c22cacf3 | 532 | extern int warn_unknown_pragmas; /* Tri state variable. */ |
4078b403 | 533 | |
4078b403 NB |
534 | /* Warn about format/argument anomalies in calls to formatted I/O functions |
535 | (*printf, *scanf, strftime, strfmon, etc.). */ | |
ab76ca54 MM |
536 | |
537 | extern int warn_format; | |
538 | ||
b34c7881 | 539 | |
4078b403 | 540 | /* C/ObjC language option variables. */ |
b34c7881 | 541 | |
2683ed8d | 542 | |
4078b403 NB |
543 | /* Nonzero means allow type mismatches in conditional expressions; |
544 | just make their values `void'. */ | |
74ff4629 | 545 | |
4078b403 | 546 | extern int flag_cond_mismatch; |
6c36d76b | 547 | |
eaf299c6 | 548 | /* Nonzero means enable C89 Amendment 1 features. */ |
b8458e3e JM |
549 | |
550 | extern int flag_isoc94; | |
551 | ||
ab76ca54 MM |
552 | /* Nonzero means use the ISO C99 dialect of C. */ |
553 | ||
554 | extern int flag_isoc99; | |
555 | ||
6614fd40 | 556 | /* Nonzero means that we have builtin functions, and main is an int. */ |
93e2382f JM |
557 | |
558 | extern int flag_hosted; | |
559 | ||
4078b403 NB |
560 | /* ObjC language option variables. */ |
561 | ||
562 | ||
563 | /* Open and close the file for outputting class declarations, if | |
564 | requested (ObjC). */ | |
565 | ||
566 | extern int flag_gen_declaration; | |
567 | ||
4078b403 NB |
568 | /* Tells the compiler that this is a special run. Do not perform any |
569 | compiling, instead we are to test some platform dependent features | |
570 | and output a C header file with appropriate definitions. */ | |
571 | ||
572 | extern int print_struct_values; | |
573 | ||
574 | /* ???. Undocumented. */ | |
575 | ||
fd350d24 | 576 | extern const char *constant_string_class_name; |
4078b403 | 577 | |
4078b403 NB |
578 | |
579 | /* C++ language option variables. */ | |
580 | ||
581 | ||
582 | /* Nonzero means don't recognize any extension keywords. */ | |
583 | ||
584 | extern int flag_no_gnu_keywords; | |
585 | ||
586 | /* Nonzero means do emit exported implementations of functions even if | |
587 | they can be inlined. */ | |
588 | ||
589 | extern int flag_implement_inlines; | |
590 | ||
4078b403 NB |
591 | /* Nonzero means that implicit instantiations will be emitted if needed. */ |
592 | ||
593 | extern int flag_implicit_templates; | |
594 | ||
595 | /* Nonzero means that implicit instantiations of inline templates will be | |
596 | emitted if needed, even if instantiations of non-inline templates | |
597 | aren't. */ | |
598 | ||
599 | extern int flag_implicit_inline_templates; | |
600 | ||
601 | /* Nonzero means generate separate instantiation control files and | |
602 | juggle them at link time. */ | |
603 | ||
604 | extern int flag_use_repository; | |
605 | ||
606 | /* Nonzero if we want to issue diagnostics that the standard says are not | |
607 | required. */ | |
608 | ||
609 | extern int flag_optional_diags; | |
610 | ||
611 | /* Nonzero means we should attempt to elide constructors when possible. */ | |
612 | ||
613 | extern int flag_elide_constructors; | |
614 | ||
615 | /* Nonzero means that member functions defined in class scope are | |
616 | inline by default. */ | |
617 | ||
618 | extern int flag_default_inline; | |
619 | ||
620 | /* Controls whether compiler generates 'type descriptor' that give | |
621 | run-time type information. */ | |
622 | ||
623 | extern int flag_rtti; | |
624 | ||
625 | /* Nonzero if we want to conserve space in the .o files. We do this | |
626 | by putting uninitialized data and runtime initialized data into | |
627 | .common instead of .data at the expense of not flagging multiple | |
628 | definitions. */ | |
629 | ||
630 | extern int flag_conserve_space; | |
631 | ||
632 | /* Nonzero if we want to obey access control semantics. */ | |
633 | ||
634 | extern int flag_access_control; | |
635 | ||
636 | /* Nonzero if we want to check the return value of new and avoid calling | |
637 | constructors if it is a null pointer. */ | |
638 | ||
639 | extern int flag_check_new; | |
640 | ||
c1ae8be5 SM |
641 | /* The supported C++ dialects. */ |
642 | ||
643 | enum cxx_dialect { | |
644 | /* C++98 */ | |
645 | cxx98, | |
646 | /* Experimental features that are likely to become part of | |
647 | C++0x. */ | |
648 | cxx0x | |
649 | }; | |
966541e3 | 650 | |
c1ae8be5 SM |
651 | /* The C++ dialect being used. C++98 is the default. */ |
652 | extern enum cxx_dialect cxx_dialect; | |
966541e3 | 653 | |
4078b403 NB |
654 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' |
655 | initialization variables. | |
656 | 0: Old rules, set by -fno-for-scope. | |
657 | 2: New ISO rules, set by -ffor-scope. | |
658 | 1: Try to implement new ISO rules, but with backup compatibility | |
659 | (and warnings). This is the default, for now. */ | |
660 | ||
661 | extern int flag_new_for_scope; | |
662 | ||
663 | /* Nonzero if we want to emit defined symbols with common-like linkage as | |
664 | weak symbols where possible, in order to conform to C++ semantics. | |
665 | Otherwise, emit them as local symbols. */ | |
666 | ||
667 | extern int flag_weak; | |
668 | ||
b20d9f0c AO |
669 | /* 0 means we want the preprocessor to not emit line directives for |
670 | the current working directory. 1 means we want it to do it. -1 | |
671 | means we should decide depending on whether debugging information | |
672 | is being emitted or not. */ | |
673 | ||
674 | extern int flag_working_directory; | |
675 | ||
4078b403 NB |
676 | /* Nonzero to use __cxa_atexit, rather than atexit, to register |
677 | destructors for local statics and global objects. */ | |
678 | ||
679 | extern int flag_use_cxa_atexit; | |
680 | ||
c7b5e395 GK |
681 | /* Nonzero to use __cxa_get_exception_ptr in the C++ exception-handling |
682 | logic. */ | |
683 | ||
684 | extern int flag_use_cxa_get_exception_ptr; | |
685 | ||
4078b403 NB |
686 | /* Nonzero means to implement standard semantics for exception |
687 | specifications, calling unexpected if an exception is thrown that | |
688 | doesn't match the specification. Zero means to treat them as | |
689 | assertions and optimize accordingly, but not check them. */ | |
690 | ||
691 | extern int flag_enforce_eh_specs; | |
692 | ||
40aac948 JM |
693 | /* Nonzero (the default) means to generate thread-safe code for |
694 | initializing local statics. */ | |
695 | ||
696 | extern int flag_threadsafe_statics; | |
697 | ||
6ea2bd47 JM |
698 | /* Nonzero if we want to pretty-print template specializations as the |
699 | template signature followed by the arguments. */ | |
700 | ||
701 | extern int flag_pretty_templates; | |
702 | ||
4078b403 NB |
703 | /* Nonzero means warn about implicit declarations. */ |
704 | ||
705 | extern int warn_implicit; | |
706 | ||
b2f97e4a MM |
707 | /* Warn about using __null (as NULL in C++) as sentinel. For code compiled |
708 | with GCC this doesn't matter as __null is guaranteed to have the right | |
709 | size. */ | |
710 | ||
711 | extern int warn_strict_null_sentinel; | |
712 | ||
4078b403 NB |
713 | /* Maximum template instantiation depth. This limit is rather |
714 | arbitrary, but it exists to limit the time it takes to notice | |
715 | infinite template instantiations. */ | |
716 | ||
717 | extern int max_tinst_depth; | |
ab76ca54 | 718 | |
25587e40 AO |
719 | /* Nonzero means the expression being parsed will never be evaluated. |
720 | This is a count, since unevaluated expressions can nest. */ | |
721 | ||
722 | extern int skip_evaluation; | |
723 | ||
148e4216 JM |
724 | /* Whether lexing has been completed, so subsequent preprocessor |
725 | errors should use the compiler's input_location. */ | |
726 | ||
727 | extern bool done_lexing; | |
728 | ||
ab76ca54 MM |
729 | /* C types are partitioned into three subsets: object, function, and |
730 | incomplete types. */ | |
731 | #define C_TYPE_OBJECT_P(type) \ | |
732 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) | |
733 | ||
734 | #define C_TYPE_INCOMPLETE_P(type) \ | |
735 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) | |
736 | ||
737 | #define C_TYPE_FUNCTION_P(type) \ | |
738 | (TREE_CODE (type) == FUNCTION_TYPE) | |
739 | ||
740 | /* For convenience we define a single macro to identify the class of | |
741 | object or incomplete types. */ | |
742 | #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ | |
743 | (!C_TYPE_FUNCTION_P (type)) | |
744 | ||
349ae713 NB |
745 | /* Attribute table common to the C front ends. */ |
746 | extern const struct attribute_spec c_common_attribute_table[]; | |
747 | extern const struct attribute_spec c_common_format_attribute_table[]; | |
748 | ||
0ba8a114 | 749 | /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. |
2ce07e2d NS |
750 | ID is the identifier to use, NAME is the string. |
751 | TYPE_DEP indicates whether it depends on type of the function or not | |
752 | (i.e. __PRETTY_FUNCTION__). */ | |
753 | ||
35b1a6fa AJ |
754 | extern tree (*make_fname_decl) (tree, int); |
755 | ||
756 | extern tree identifier_global_value (tree); | |
757 | extern void record_builtin_type (enum rid, const char *, tree); | |
758 | extern tree build_void_list_node (void); | |
759 | extern void start_fname_decls (void); | |
760 | extern void finish_fname_decls (void); | |
761 | extern const char *fname_as_string (int); | |
3ba09659 | 762 | extern tree fname_decl (location_t, unsigned, tree); |
35b1a6fa | 763 | |
94a0dd7b | 764 | extern void check_function_arguments (tree, int, tree *, tree); |
35b1a6fa AJ |
765 | extern void check_function_arguments_recurse (void (*) |
766 | (void *, tree, | |
767 | unsigned HOST_WIDE_INT), | |
768 | void *, tree, | |
769 | unsigned HOST_WIDE_INT); | |
83322951 | 770 | extern bool check_builtin_function_arguments (tree, int, tree *); |
94a0dd7b | 771 | extern void check_function_format (tree, int, tree *); |
35b1a6fa AJ |
772 | extern void set_Wformat (int); |
773 | extern tree handle_format_attribute (tree *, tree, tree, int, bool *); | |
774 | extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); | |
2772ef3e | 775 | extern int c_common_handle_option (size_t code, const char *arg, int value); |
cb66e385 | 776 | extern bool c_common_missing_argument (const char *opt, size_t code); |
35b1a6fa AJ |
777 | extern tree c_common_type_for_mode (enum machine_mode, int); |
778 | extern tree c_common_type_for_size (unsigned int, int); | |
ab22c1fa CF |
779 | extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, |
780 | int, int); | |
12753674 | 781 | extern tree c_common_unsigned_type (tree); |
35b1a6fa AJ |
782 | extern tree c_common_signed_type (tree); |
783 | extern tree c_common_signed_or_unsigned_type (int, tree); | |
38a4afee | 784 | extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); |
58f9752a | 785 | extern bool decl_with_nonnull_addr_p (const_tree); |
928c19bb JM |
786 | extern tree c_fully_fold (tree, bool, bool *); |
787 | extern tree decl_constant_value_for_optimization (tree); | |
788 | extern tree c_save_expr (tree); | |
ba47d38d | 789 | extern tree c_common_truthvalue_conversion (location_t, tree); |
35b1a6fa | 790 | extern void c_apply_type_quals_to_decl (int, tree); |
03a08664 | 791 | extern tree c_sizeof_or_alignof_type (tree, bool, int); |
35b1a6fa | 792 | extern tree c_alignof_expr (tree); |
7f4edbcb BS |
793 | /* Print an error message for invalid operands to arith operation CODE. |
794 | NOP_EXPR is used as a special case (see truthvalue_conversion). */ | |
ba47d38d | 795 | extern void binary_op_error (location_t, enum tree_code, tree, tree); |
35b1a6fa | 796 | extern tree fix_string_type (tree); |
b84a3874 | 797 | struct varray_head_tag; |
35b1a6fa | 798 | extern void constant_expression_warning (tree); |
393eda6a | 799 | extern void constant_expression_error (tree); |
79bedddc | 800 | extern bool strict_aliasing_warning (tree, tree, tree); |
07231d4f | 801 | extern void warnings_for_convert_and_check (tree, tree, tree); |
35b1a6fa AJ |
802 | extern tree convert_and_check (tree, tree); |
803 | extern void overflow_warning (tree); | |
ca409efd MLI |
804 | extern void warn_logical_operator (location_t, enum tree_code, |
805 | enum tree_code, tree, enum tree_code, tree); | |
a1e45ff0 | 806 | extern void check_main_parameter_types (tree decl); |
b2ca3702 | 807 | extern bool c_determine_visibility (tree); |
5bed876a | 808 | extern bool same_scalar_type_ignoring_signedness (tree, tree); |
ab76ca54 | 809 | |
03a08664 ILT |
810 | #define c_sizeof(T) c_sizeof_or_alignof_type (T, true, 1) |
811 | #define c_alignof(T) c_sizeof_or_alignof_type (T, false, 1) | |
7f4edbcb | 812 | |
6715192c MLI |
813 | /* Subroutine of build_binary_op, used for certain operations. */ |
814 | extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); | |
815 | ||
7f4edbcb BS |
816 | /* Subroutine of build_binary_op, used for comparison operations. |
817 | See if the operands have both been converted from subword integer types | |
818 | and, if so, perhaps change them both back to their original type. */ | |
35b1a6fa | 819 | extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); |
7f4edbcb | 820 | |
a5f805df | 821 | extern tree pointer_int_sum (location_t, enum tree_code, tree, tree); |
50e60bc3 ZW |
822 | |
823 | /* Add qualifiers to a type, in the fashion for C. */ | |
35b1a6fa | 824 | extern tree c_build_qualified_type (tree, int); |
50e60bc3 | 825 | |
7f4edbcb BS |
826 | /* Build tree nodes and builtin functions common to both C and C++ language |
827 | frontends. */ | |
35b1a6fa | 828 | extern void c_common_nodes_and_builtins (void); |
d3707adb | 829 | |
b482789c MA |
830 | extern void set_builtin_user_assembler_name (tree decl, const char *asmspec); |
831 | ||
35b1a6fa | 832 | extern void disable_builtin_function (const char *); |
7d14c755 | 833 | |
3b2db49f MM |
834 | extern void set_compound_literal_name (tree decl); |
835 | ||
35b1a6fa | 836 | extern tree build_va_arg (tree, tree); |
7e8176d7 | 837 | |
b86f6cd9 | 838 | extern unsigned int c_common_init_options (unsigned int, const char **); |
35b1a6fa AJ |
839 | extern bool c_common_post_options (const char **); |
840 | extern bool c_common_init (void); | |
841 | extern void c_common_finish (void); | |
842 | extern void c_common_parse_file (int); | |
4862826d | 843 | extern alias_set_type c_common_get_alias_set (tree); |
9649812a | 844 | extern void c_register_builtin_type (tree, const char*); |
58f9752a KG |
845 | extern bool c_promoting_integer_type_p (const_tree); |
846 | extern int self_promoting_args_p (const_tree); | |
12ea3302 | 847 | extern tree strip_pointer_operator (tree); |
ba992967 | 848 | extern tree strip_pointer_or_array_types (tree); |
c5ff069d | 849 | extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); |
d7e7759d | 850 | |
d1bd0ded GK |
851 | /* This is the basic parsing function. */ |
852 | extern void c_parse_file (void); | |
853 | /* This is misnamed, it actually performs end-of-compilation processing. */ | |
854 | extern void finish_file (void); | |
855 | ||
c5ff069d | 856 | |
ae499cce MM |
857 | /* These macros provide convenient access to the various _STMT nodes. */ |
858 | ||
325c3691 RH |
859 | /* Nonzero if a given STATEMENT_LIST represents the outermost binding |
860 | if a statement expression. */ | |
861 | #define STATEMENT_LIST_STMT_EXPR(NODE) \ | |
862 | TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) | |
174283a3 RH |
863 | |
864 | /* Nonzero if a label has been added to the statement list. */ | |
865 | #define STATEMENT_LIST_HAS_LABEL(NODE) \ | |
866 | TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) | |
325c3691 | 867 | |
928c19bb JM |
868 | /* C_MAYBE_CONST_EXPR accessors. */ |
869 | #define C_MAYBE_CONST_EXPR_PRE(NODE) \ | |
870 | TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) | |
871 | #define C_MAYBE_CONST_EXPR_EXPR(NODE) \ | |
872 | TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) | |
873 | #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ | |
874 | TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) | |
875 | #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ | |
876 | TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) | |
877 | #define EXPR_INT_CONST_OPERANDS(EXPR) \ | |
878 | (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ | |
879 | && (TREE_CODE (EXPR) == INTEGER_CST \ | |
880 | || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ | |
881 | && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) | |
882 | ||
0a7394bc MM |
883 | /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ |
884 | #define DECL_C_BIT_FIELD(NODE) \ | |
885 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) | |
886 | #define SET_DECL_C_BIT_FIELD(NODE) \ | |
887 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) | |
888 | #define CLEAR_DECL_C_BIT_FIELD(NODE) \ | |
889 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) | |
890 | ||
35b1a6fa AJ |
891 | extern tree do_case (tree, tree); |
892 | extern tree build_stmt (enum tree_code, ...); | |
893 | extern tree build_case_label (tree, tree, tree); | |
f2c5f623 | 894 | |
ab76ca54 MM |
895 | /* These functions must be defined by each front-end which implements |
896 | a variant of the C language. They are used in c-common.c. */ | |
897 | ||
c9f9eb5d | 898 | extern tree build_unary_op (location_t, enum tree_code, tree, int); |
ba47d38d | 899 | extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); |
522ddfa2 | 900 | extern tree perform_integral_promotions (tree); |
ab76ca54 | 901 | |
d593cb3d MS |
902 | /* These functions must be defined by each front-end which implements |
903 | a variant of the C language. They are used by port files. */ | |
904 | ||
905 | extern tree default_conversion (tree); | |
906 | ||
ab76ca54 MM |
907 | /* Given two integer or real types, return the type for their sum. |
908 | Given two compatible ANSI C types, returns the merged type. */ | |
909 | ||
35b1a6fa | 910 | extern tree common_type (tree, tree); |
44835fdd | 911 | |
35b1a6fa | 912 | extern tree decl_constant_value (tree); |
56cb9733 | 913 | |
19552aa5 | 914 | /* Handle increment and decrement of boolean types. */ |
35b1a6fa | 915 | extern tree boolean_increment (enum tree_code, tree); |
19552aa5 | 916 | |
35b1a6fa | 917 | extern int case_compare (splay_tree_key, splay_tree_key); |
8f17b5c5 | 918 | |
a6c0a76c | 919 | extern tree c_add_case_label (splay_tree, tree, tree, tree, tree); |
8f17b5c5 | 920 | |
fbc315db | 921 | extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); |
6de9cd9a | 922 | |
35b1a6fa | 923 | extern tree build_function_call (tree, tree); |
c70eaeaf | 924 | |
48ae6c13 RH |
925 | extern tree resolve_overloaded_builtin (tree, tree); |
926 | ||
6a3799eb | 927 | extern tree finish_label_address_expr (tree, location_t); |
15b732b2 NB |
928 | |
929 | /* Same function prototype, but the C and C++ front ends have | |
930 | different implementations. Used in c-common.c. */ | |
35b1a6fa | 931 | extern tree lookup_label (tree); |
10e6657a | 932 | extern tree lookup_name (tree); |
15b732b2 | 933 | |
f83c7f63 | 934 | extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); |
58f9752a | 935 | extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); |
cc27e657 | 936 | |
0fab64a3 | 937 | extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); |
8f17b5c5 | 938 | |
35b1a6fa | 939 | extern void init_c_lex (void); |
81a75f0f | 940 | |
35b1a6fa | 941 | extern void c_cpp_builtins (cpp_reader *); |
ab442df7 | 942 | extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); |
76c3e73e | 943 | |
731e8b38 MM |
944 | /* Positive if an implicit `extern "C"' scope has just been entered; |
945 | negative if such a scope has just been exited. */ | |
7876228d | 946 | extern GTY(()) int pending_lang_change; |
731e8b38 | 947 | |
0e5921e8 ZW |
948 | /* Information recorded about each file examined during compilation. */ |
949 | ||
950 | struct c_fileinfo | |
951 | { | |
952 | int time; /* Time spent in the file. */ | |
5d709b00 ZW |
953 | |
954 | /* Flags used only by C++. | |
955 | INTERFACE_ONLY nonzero means that we are in an "interface" section | |
956 | of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust | |
957 | the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and | |
958 | INTERFACE_ONLY is zero, it means that we are responsible for | |
959 | exporting definitions that others might need. */ | |
960 | short interface_only; | |
0e5921e8 ZW |
961 | short interface_unknown; |
962 | }; | |
963 | ||
35b1a6fa AJ |
964 | struct c_fileinfo *get_fileinfo (const char *); |
965 | extern void dump_time_statistics (void); | |
966 | ||
967 | extern bool c_dump_tree (void *, tree); | |
968 | ||
726a989a | 969 | extern void c_warn_unused_result (gimple_seq); |
6de9cd9a | 970 | |
3a5b9284 RH |
971 | extern void verify_sequence_points (tree); |
972 | ||
6d4d7b0e | 973 | extern tree fold_offsetof (tree, tree); |
ee8a6a3e | 974 | |
5ae9ba3e | 975 | /* Places where an lvalue, or modifiable lvalue, may be required. |
37dc0d8d | 976 | Used to select diagnostic messages in lvalue_error and |
5ae9ba3e MM |
977 | readonly_error. */ |
978 | enum lvalue_use { | |
979 | lv_assign, | |
980 | lv_increment, | |
981 | lv_decrement, | |
982 | lv_addressof, | |
983 | lv_asm | |
984 | }; | |
985 | ||
37dc0d8d | 986 | extern void lvalue_error (enum lvalue_use); |
5ae9ba3e | 987 | |
aab038d5 RH |
988 | extern int complete_array_type (tree *, tree, bool); |
989 | ||
48ae6c13 RH |
990 | extern tree builtin_type_for_size (int, bool); |
991 | ||
ff6b6641 | 992 | extern void warn_array_subscript_with_type_char (tree); |
100d537d MLI |
993 | extern void warn_about_parentheses (enum tree_code, |
994 | enum tree_code, tree, | |
995 | enum tree_code, tree); | |
c616e51b | 996 | extern void warn_for_unused_label (tree label); |
c9f9eb5d | 997 | extern void warn_for_div_by_zero (location_t, tree divisor); |
ba47d38d AH |
998 | extern void warn_for_sign_compare (location_t, |
999 | tree orig_op0, tree orig_op1, | |
2d12797c MLI |
1000 | tree op0, tree op1, |
1001 | tree result_type, | |
1002 | enum tree_code resultcode); | |
d0940d56 DS |
1003 | extern void set_underlying_type (tree x); |
1004 | extern bool is_typedef_decl (tree x); | |
2a67bec2 | 1005 | |
7c34ced1 | 1006 | /* In c-gimplify.c */ |
6de9cd9a | 1007 | extern void c_genericize (tree); |
726a989a | 1008 | extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); |
325c3691 | 1009 | extern tree c_build_bind_expr (tree, tree); |
6de9cd9a | 1010 | |
c0d578e6 | 1011 | /* In c-pch.c */ |
35b1a6fa AJ |
1012 | extern void pch_init (void); |
1013 | extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); | |
1014 | extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, | |
1015 | const char *orig); | |
1016 | extern void c_common_write_pch (void); | |
18c81520 | 1017 | extern void c_common_no_more_pch (void); |
bc4071dd | 1018 | extern void c_common_pch_pragma (cpp_reader *pfile, const char *); |
3fd30b88 GK |
1019 | extern void c_common_print_pch_checksum (FILE *f); |
1020 | ||
1021 | /* In *-checksum.c */ | |
1022 | extern const unsigned char executable_checksum[16]; | |
c0d578e6 | 1023 | |
ab442df7 MM |
1024 | /* In c-cppbuiltin.c */ |
1025 | extern void builtin_define_std (const char *macro); | |
35b1a6fa AJ |
1026 | extern void builtin_define_with_value (const char *, const char *, int); |
1027 | extern void c_stddef_cpp_builtins (void); | |
1028 | extern void fe_file_change (const struct line_map *); | |
4bb8ca28 | 1029 | extern void c_parse_error (const char *, enum cpp_ttype, tree); |
9d10c9a9 | 1030 | |
e5a002e3 ZL |
1031 | /* Objective-C / Objective-C++ entry points. */ |
1032 | ||
1033 | /* The following ObjC/ObjC++ functions are called by the C and/or C++ | |
1034 | front-ends; they all must have corresponding stubs in stub-objc.c. */ | |
bc095846 | 1035 | extern tree objc_is_class_name (tree); |
264fa2db ZL |
1036 | extern tree objc_is_object_ptr (tree); |
1037 | extern void objc_check_decl (tree); | |
e5a002e3 | 1038 | extern int objc_is_reserved_word (tree); |
58393038 ZL |
1039 | extern bool objc_compare_types (tree, tree, int, tree); |
1040 | extern void objc_volatilize_decl (tree); | |
1041 | extern bool objc_type_quals_match (tree, tree); | |
6e955430 | 1042 | extern tree objc_rewrite_function_call (tree, tree); |
264fa2db | 1043 | extern tree objc_message_selector (void); |
16b34ad6 | 1044 | extern tree objc_lookup_ivar (tree, tree); |
325c3691 | 1045 | extern void objc_clear_super_receiver (void); |
7a3ea201 | 1046 | extern int objc_is_public (tree, tree); |
a45bcfb2 ZL |
1047 | extern tree objc_is_id (tree); |
1048 | extern void objc_declare_alias (tree, tree); | |
1049 | extern void objc_declare_class (tree); | |
1050 | extern void objc_declare_protocols (tree); | |
1051 | extern tree objc_build_message_expr (tree); | |
1052 | extern tree objc_finish_message_expr (tree, tree, tree); | |
1053 | extern tree objc_build_selector_expr (tree); | |
1054 | extern tree objc_build_protocol_expr (tree); | |
1055 | extern tree objc_build_encode_expr (tree); | |
1056 | extern tree objc_build_string_object (tree); | |
1057 | extern tree objc_get_protocol_qualified_type (tree, tree); | |
1058 | extern tree objc_get_class_reference (tree); | |
1059 | extern tree objc_get_class_ivars (tree); | |
1060 | extern void objc_start_class_interface (tree, tree, tree); | |
1061 | extern void objc_start_category_interface (tree, tree, tree); | |
1062 | extern void objc_start_protocol (tree, tree); | |
1063 | extern void objc_continue_interface (void); | |
1064 | extern void objc_finish_interface (void); | |
1065 | extern void objc_start_class_implementation (tree, tree); | |
1066 | extern void objc_start_category_implementation (tree, tree); | |
1067 | extern void objc_continue_implementation (void); | |
1068 | extern void objc_finish_implementation (void); | |
1069 | extern void objc_set_visibility (int); | |
1070 | extern void objc_set_method_type (enum tree_code); | |
dbb74365 | 1071 | extern tree objc_build_method_signature (tree, tree, tree, bool); |
a45bcfb2 ZL |
1072 | extern void objc_add_method_declaration (tree); |
1073 | extern void objc_start_method_definition (tree); | |
1074 | extern void objc_finish_method_definition (tree); | |
1075 | extern void objc_add_instance_variable (tree); | |
1076 | extern tree objc_build_keyword_decl (tree, tree, tree); | |
1077 | extern tree objc_build_throw_stmt (tree); | |
1078 | extern void objc_begin_try_stmt (location_t, tree); | |
6e955430 | 1079 | extern tree objc_finish_try_stmt (void); |
a45bcfb2 ZL |
1080 | extern void objc_begin_catch_clause (tree); |
1081 | extern void objc_finish_catch_clause (void); | |
1082 | extern void objc_build_finally_clause (location_t, tree); | |
6e955430 | 1083 | extern tree objc_build_synchronized (location_t, tree, tree); |
a45bcfb2 ZL |
1084 | extern int objc_static_init_needed_p (void); |
1085 | extern tree objc_generate_static_init_call (tree); | |
6e955430 | 1086 | extern tree objc_generate_write_barrier (tree, enum tree_code, tree); |
264fa2db | 1087 | |
e5a002e3 ZL |
1088 | /* The following are provided by the C and C++ front-ends, and called by |
1089 | ObjC/ObjC++. */ | |
bc095846 | 1090 | extern void *objc_get_current_scope (void); |
e5a002e3 ZL |
1091 | extern void objc_mark_locals_volatile (void *); |
1092 | ||
9d10c9a9 | 1093 | /* In c-ppoutput.c */ |
35b1a6fa AJ |
1094 | extern void init_pp_output (FILE *); |
1095 | extern void preprocess_file (cpp_reader *); | |
1096 | extern void pp_file_change (const struct line_map *); | |
8e9ea4d7 | 1097 | extern void pp_dir_change (cpp_reader *, const char *); |
104f8784 | 1098 | extern bool check_missing_format_attribute (tree, tree); |
17211ab5 | 1099 | |
953ff289 DN |
1100 | /* In c-omp.c */ |
1101 | extern tree c_finish_omp_master (tree); | |
1102 | extern tree c_finish_omp_critical (tree, tree); | |
1103 | extern tree c_finish_omp_ordered (tree); | |
1104 | extern void c_finish_omp_barrier (void); | |
fe89d797 | 1105 | extern tree c_finish_omp_atomic (enum tree_code, tree, tree); |
953ff289 | 1106 | extern void c_finish_omp_flush (void); |
a68ab351 | 1107 | extern void c_finish_omp_taskwait (void); |
953ff289 DN |
1108 | extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree); |
1109 | extern void c_split_parallel_clauses (tree, tree *, tree *); | |
1110 | extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); | |
1111 | ||
1112 | /* Not in c-omp.c; provided by the front end. */ | |
1113 | extern bool c_omp_sharing_predetermined (tree); | |
1114 | extern tree c_omp_remap_decl (tree, bool); | |
1115 | ||
ea40ba9c JM |
1116 | /* In order for the format checking to accept the C frontend |
1117 | diagnostic framework extensions, you must include this file before | |
1118 | toplev.h, not after. The C front end formats are a subset of those | |
1119 | for C++, so they are the appropriate set to use in common code; | |
1120 | cp-tree.h overrides this for C++. */ | |
1121 | #ifndef GCC_DIAG_STYLE | |
1122 | #define GCC_DIAG_STYLE __gcc_cdiag__ | |
1123 | #endif | |
1124 | ||
88657302 | 1125 | #endif /* ! GCC_C_COMMON_H */ |