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463ae493 | 1 | /* Gengtype persistent state serialization & de-serialization. |
2 | Useful for gengtype in plugin mode. | |
3 | ||
fbd26352 | 4 | Copyright (C) 2010-2019 Free Software Foundation, Inc. |
463ae493 | 5 | |
6 | This file is part of GCC. | |
7 | ||
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 | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. | |
21 | ||
22 | Contributed by Jeremie Salvucci <jeremie.salvucci@free.fr> | |
23 | and Basile Starynkevitch <basile@starynkevitch.net> | |
24 | */ | |
25 | ||
ed89620f | 26 | #ifdef HOST_GENERATOR_FILE |
6d70c713 | 27 | #include "config.h" |
ed89620f | 28 | #define GENERATOR_FILE 1 |
29 | #else | |
30 | #include "bconfig.h" | |
6d70c713 | 31 | #endif |
463ae493 | 32 | #include "system.h" |
33 | #include "errors.h" /* For fatal. */ | |
463ae493 | 34 | #include "version.h" /* For version_string & pkgversion_string. */ |
35 | #include "obstack.h" | |
36 | #include "gengtype.h" | |
37 | ||
38 | ||
39 | ||
40 | /* Gives the file location of a type, if any. */ | |
41 | static inline struct fileloc* | |
42 | type_lineloc (const_type_p ty) | |
43 | { | |
44 | if (!ty) | |
45 | return NULL; | |
46 | switch (ty->kind) | |
47 | { | |
48 | case TYPE_NONE: | |
49 | gcc_unreachable (); | |
50 | case TYPE_STRUCT: | |
51 | case TYPE_UNION: | |
52 | case TYPE_LANG_STRUCT: | |
2b15d2ba | 53 | case TYPE_USER_STRUCT: |
f1f41a6c | 54 | case TYPE_UNDEFINED: |
463ae493 | 55 | return CONST_CAST (struct fileloc*, &ty->u.s.line); |
463ae493 | 56 | case TYPE_SCALAR: |
57 | case TYPE_STRING: | |
58 | case TYPE_POINTER: | |
59 | case TYPE_ARRAY: | |
60 | return NULL; | |
61 | default: | |
62 | gcc_unreachable (); | |
63 | } | |
64 | } | |
65 | ||
66 | /* The state file has simplistic lispy lexical tokens. Its lexer gives | |
9d75589a | 67 | a linked list of struct state_token_st, through the peek_state_token |
463ae493 | 68 | function. Lexical tokens are consumed with next_state_tokens. */ |
69 | ||
70 | ||
71 | /* The lexical kind of each lispy token. */ | |
72 | enum state_token_en | |
73 | { | |
74 | STOK_NONE, /* Never used. */ | |
75 | STOK_INTEGER, /* Integer token. */ | |
76 | STOK_STRING, /* String token. */ | |
77 | STOK_LEFTPAR, /* Left opening parenthesis. */ | |
78 | STOK_RIGHTPAR, /* Right closing parenthesis. */ | |
79 | STOK_NAME /* hash-consed name or identifier. */ | |
80 | }; | |
81 | ||
82 | ||
83 | /* Structure and hash-table used to share identifiers or names. */ | |
84 | struct state_ident_st | |
85 | { | |
86 | /* TODO: We could improve the parser by reserving identifiers for | |
87 | state keywords and adding a keyword number for them. That would | |
88 | mean adding another field in this state_ident_st struct. */ | |
89 | char stid_name[1]; /* actually bigger & null terminated */ | |
90 | }; | |
91 | static htab_t state_ident_tab; | |
92 | ||
93 | ||
94 | /* The state_token_st structure is for lexical tokens in the read | |
95 | state file. The stok_kind field discriminates the union. Tokens | |
96 | are allocated by peek_state_token which calls read_a_state_token | |
97 | which allocate them. Tokens are freed by calls to | |
98 | next_state_tokens. Token are organized in a FIFO look-ahead queue | |
99 | filled by peek_state_token. */ | |
100 | struct state_token_st | |
101 | { | |
102 | enum state_token_en stok_kind; /* the lexical kind | |
103 | discriminates the stok_un | |
104 | union */ | |
105 | int stok_line; /* the line number */ | |
106 | int stok_col; /* the column number */ | |
107 | const char *stok_file; /* the file path */ | |
108 | struct state_token_st *stok_next; /* the next token in the | |
109 | queue, when peeked */ | |
110 | union /* discriminated by stok_kind! */ | |
111 | { | |
112 | int stok_num; /* when STOK_INTEGER */ | |
113 | char stok_string[1]; /* when STOK_STRING, actual size is | |
114 | bigger and null terminated */ | |
115 | struct state_ident_st *stok_ident; /* when STOK_IDENT */ | |
116 | void *stok_ptr; /* null otherwise */ | |
117 | } | |
118 | stok_un; | |
119 | }; | |
120 | ||
121 | ||
122 | ||
123 | ||
124 | #define NULL_STATE_TOKEN (struct state_token_st*)0 | |
125 | ||
126 | /* the state_token pointer contains the leftmost current token. The | |
127 | tokens are organized in a linked queue, using stok_next, for token | |
128 | look-ahead. */ | |
129 | struct state_token_st *state_token = NULL_STATE_TOKEN; | |
130 | ||
131 | /* Used by the reading lexer. */ | |
132 | static FILE *state_file; | |
133 | static const char *state_path = NULL; | |
134 | static int state_line = 0; | |
135 | static long state_bol = 0; /* offset of beginning of line */ | |
136 | ||
a50dd382 | 137 | /* A class for writing out s-expressions, keeping track of newlines and |
138 | nested indentation. */ | |
139 | class s_expr_writer | |
140 | { | |
141 | public: | |
9af5ce0c | 142 | s_expr_writer (); |
a50dd382 | 143 | |
144 | void write_new_line (); | |
145 | void write_any_indent (int leading_spaces); | |
463ae493 | 146 | |
a50dd382 | 147 | void begin_s_expr (const char *tag); |
148 | void end_s_expr (); | |
149 | ||
150 | private: | |
ae84f584 | 151 | int m_indent_amount; |
152 | int m_had_recent_newline; | |
a50dd382 | 153 | }; // class s_expr_writer |
154 | ||
155 | /* A class for writing out "gtype.state". */ | |
156 | class state_writer : public s_expr_writer | |
157 | { | |
158 | public: | |
9af5ce0c | 159 | state_writer (); |
a50dd382 | 160 | |
161 | private: | |
162 | void write_state_fileloc (struct fileloc *floc); | |
163 | void write_state_fields (pair_p fields); | |
164 | void write_state_a_string (const char *s); | |
165 | void write_state_string_option (options_p current); | |
166 | void write_state_type_option (options_p current); | |
167 | void write_state_nested_option (options_p current); | |
168 | void write_state_option (options_p current); | |
169 | void write_state_options (options_p opt); | |
170 | void write_state_lang_bitmap (lang_bitmap bitmap); | |
171 | void write_state_version (const char *version); | |
172 | void write_state_scalar_type (type_p current); | |
173 | void write_state_string_type (type_p current); | |
174 | void write_state_undefined_type (type_p current); | |
175 | void write_state_struct_union_type (type_p current, const char *kindstr); | |
176 | void write_state_struct_type (type_p current); | |
177 | void write_state_user_struct_type (type_p current); | |
178 | void write_state_union_type (type_p current); | |
179 | void write_state_lang_struct_type (type_p current); | |
a50dd382 | 180 | void write_state_pointer_type (type_p current); |
181 | void write_state_array_type (type_p current); | |
182 | void write_state_gc_used (enum gc_used_enum gus); | |
183 | void write_state_common_type_content (type_p current); | |
184 | void write_state_type (type_p current); | |
185 | void write_state_pair (pair_p current); | |
186 | int write_state_pair_list (pair_p list); | |
187 | void write_state_typedefs (void); | |
188 | void write_state_structures (void); | |
a50dd382 | 189 | void write_state_variables (void); |
190 | void write_state_srcdir (void); | |
191 | void write_state_files_list (void); | |
192 | void write_state_languages (void); | |
193 | ||
194 | friend void write_state (const char *state_path); | |
195 | ||
196 | private: | |
197 | /* Counter of written types. */ | |
ae84f584 | 198 | int m_state_written_type_count; |
a50dd382 | 199 | }; // class state_writer |
200 | ||
201 | ||
202 | /* class s_expr_writer's trivial constructor. */ | |
9af5ce0c | 203 | s_expr_writer::s_expr_writer () |
ae84f584 | 204 | : m_indent_amount (0), |
205 | m_had_recent_newline (0) | |
a50dd382 | 206 | { |
207 | } | |
208 | ||
209 | /* Write a newline to the output file, merging adjacent newlines. */ | |
210 | void | |
211 | s_expr_writer::write_new_line (void) | |
212 | { | |
213 | /* Don't add a newline if we've just had one. */ | |
ae84f584 | 214 | if (!m_had_recent_newline) |
a50dd382 | 215 | { |
216 | fprintf (state_file, "\n"); | |
ae84f584 | 217 | m_had_recent_newline = 1; |
a50dd382 | 218 | } |
219 | } | |
220 | ||
221 | /* If we've just had a newline, write the indentation amount, potentially | |
222 | omitting some spaces. | |
223 | ||
224 | LEADING_SPACES exists to support code that writes strings with leading | |
225 | spaces (e.g " foo") which might occur within a line, or could be the first | |
226 | thing on a line. By passing leading_spaces == 1, when such a string is the | |
227 | first thing on a line, write_any_indent () swallows the successive | |
228 | leading spaces into the indentation so that the "foo" begins at the expected | |
229 | column. */ | |
230 | void | |
231 | s_expr_writer::write_any_indent (int leading_spaces) | |
232 | { | |
233 | int i; | |
ae84f584 | 234 | int amount = m_indent_amount - leading_spaces; |
235 | if (m_had_recent_newline) | |
a50dd382 | 236 | for (i = 0; i < amount; i++) |
237 | fprintf (state_file, " "); | |
ae84f584 | 238 | m_had_recent_newline = 0; |
a50dd382 | 239 | } |
240 | ||
241 | /* Write the beginning of a new s-expresion e.g. "(!foo " | |
a04e8d62 | 242 | The writer automatically adds whitespace to show the hierarchical |
a50dd382 | 243 | structure of the expressions, so each one starts on a new line, |
244 | and any within it will be at an increased indentation level. */ | |
245 | void | |
246 | s_expr_writer::begin_s_expr (const char *tag) | |
247 | { | |
248 | write_new_line (); | |
249 | write_any_indent (0); | |
250 | fprintf (state_file, "(!%s ", tag); | |
ae84f584 | 251 | m_indent_amount++; |
a50dd382 | 252 | } |
253 | ||
254 | /* Write out the end of an s-expression: any necssessary indentation, | |
255 | a closing parenthesis, and a new line. */ | |
256 | void | |
257 | s_expr_writer::end_s_expr (void) | |
258 | { | |
ae84f584 | 259 | m_indent_amount--; |
a50dd382 | 260 | write_any_indent (0); |
261 | fprintf (state_file, ")"); | |
262 | write_new_line (); | |
263 | } | |
264 | ||
265 | ||
266 | /* class state_writer's trivial constructor. */ | |
9af5ce0c | 267 | state_writer::state_writer () |
268 | : s_expr_writer (), | |
ae84f584 | 269 | m_state_written_type_count (0) |
a50dd382 | 270 | { |
271 | } | |
463ae493 | 272 | |
273 | ||
274 | /* Fatal error messages when reading the state. They are extremely | |
275 | unlikely, and only appear when this gengtype-state.c file is buggy, | |
276 | or when reading a gengtype state which was not generated by the | |
277 | same version of gengtype or GCC. */ | |
278 | ||
279 | ||
280 | /* Fatal message while reading state. */ | |
03edaad8 | 281 | static void |
463ae493 | 282 | fatal_reading_state (struct state_token_st* tok, const char*msg) |
283 | { | |
284 | if (tok) | |
285 | fatal ("%s:%d:%d: Invalid state file; %s", | |
286 | tok->stok_file, tok->stok_line, tok->stok_col, | |
287 | msg); | |
288 | else | |
289 | fatal ("%s:%d: Invalid state file; %s", | |
290 | state_path, state_line, msg); | |
291 | } | |
292 | ||
293 | ||
294 | /* Fatal printf-like message while reading state. This can't be a | |
295 | function, because there is no way to pass a va_arg to a variant of | |
296 | fatal. */ | |
297 | #define fatal_reading_state_printf(Tok,Fmt,...) do { \ | |
298 | struct state_token_st* badtok = Tok; \ | |
299 | if (badtok) \ | |
300 | fatal ("%s:%d:%d: Invalid state file; " Fmt, \ | |
301 | badtok->stok_file, \ | |
302 | badtok->stok_line, \ | |
303 | badtok->stok_col, __VA_ARGS__); \ | |
304 | else \ | |
305 | fatal ("%s:%d: Invalid state file; " Fmt, \ | |
306 | state_path, state_line, __VA_ARGS__); \ | |
9af5ce0c | 307 | } while (0) |
463ae493 | 308 | |
309 | ||
310 | /* Find or allocate an identifier in our name hash table. */ | |
311 | static struct state_ident_st * | |
312 | state_ident_by_name (const char *name, enum insert_option optins) | |
313 | { | |
314 | PTR *slot = NULL; | |
315 | int namlen = 0; | |
316 | struct state_ident_st *stid = NULL; | |
317 | ||
318 | if (!name || !name[0]) | |
319 | return NULL; | |
320 | ||
321 | slot = htab_find_slot (state_ident_tab, name, optins); | |
322 | if (!slot) | |
323 | return NULL; | |
324 | ||
325 | namlen = strlen (name); | |
326 | stid = | |
327 | (struct state_ident_st *) xmalloc (sizeof (struct state_ident_st) + | |
328 | namlen); | |
329 | memset (stid, 0, sizeof (struct state_ident_st) + namlen); | |
330 | strcpy (stid->stid_name, name); | |
331 | *slot = stid; | |
332 | ||
333 | return stid; | |
334 | } | |
335 | ||
336 | /* Our token lexer is heavily inspired by MELT's lexer, and share some | |
337 | code with the file gcc/melt-runtime.c of the GCC MELT branch! We | |
338 | really want the gengtype state to be easily parsable by MELT. This | |
339 | is a usual lispy lexing routine, dealing with spaces and comments, | |
340 | numbers, parenthesis, names, strings. */ | |
341 | static struct state_token_st * | |
342 | read_a_state_token (void) | |
343 | { | |
344 | int c = 0; | |
345 | long curoff = 0; | |
346 | struct state_token_st *tk = NULL; | |
347 | ||
348 | again: /* Read again, e.g. after a comment or spaces. */ | |
349 | c = getc (state_file); | |
350 | if (c == EOF) | |
351 | return NULL; | |
352 | ||
353 | /* Handle spaces, count lines. */ | |
354 | if (c == '\n') | |
355 | { | |
356 | state_line++; | |
357 | state_bol = curoff = ftell (state_file); | |
358 | goto again; | |
359 | }; | |
360 | if (ISSPACE (c)) | |
361 | goto again; | |
362 | /* Skip comments starting with semi-colon. */ | |
363 | if (c == ';') | |
364 | { | |
365 | do | |
366 | { | |
367 | c = getc (state_file); | |
368 | } | |
369 | while (c > 0 && c != '\n'); | |
370 | if (c == '\n') | |
371 | { | |
372 | state_line++; | |
373 | state_bol = curoff = ftell (state_file); | |
374 | } | |
375 | goto again; | |
376 | }; | |
377 | /* Read signed numbers. */ | |
378 | if (ISDIGIT (c) || c == '-' || c == '+') | |
379 | { /* number */ | |
380 | int n = 0; | |
381 | ungetc (c, state_file); | |
382 | curoff = ftell (state_file); | |
383 | if (fscanf (state_file, "%d", &n) <= 0) | |
384 | fatal_reading_state (NULL_STATE_TOKEN, "Lexical error in number"); | |
385 | tk = XCNEW (struct state_token_st); | |
386 | tk->stok_kind = STOK_INTEGER; | |
387 | tk->stok_line = state_line; | |
388 | tk->stok_col = curoff - state_bol; | |
389 | tk->stok_file = state_path; | |
390 | tk->stok_next = NULL; | |
391 | tk->stok_un.stok_num = n; | |
392 | ||
393 | return tk; | |
394 | } | |
395 | /* Read an opening left parenthesis. */ | |
396 | else if (c == '(') | |
397 | { | |
398 | curoff = ftell (state_file); | |
399 | tk = XCNEW (struct state_token_st); | |
400 | tk->stok_kind = STOK_LEFTPAR; | |
401 | tk->stok_line = state_line; | |
402 | tk->stok_col = curoff - state_bol; | |
403 | tk->stok_file = state_path; | |
404 | tk->stok_next = NULL; | |
405 | ||
406 | return tk; | |
407 | } | |
408 | /* Read an closing right parenthesis. */ | |
409 | else if (c == ')') | |
410 | { | |
411 | curoff = ftell (state_file); | |
412 | tk = XCNEW (struct state_token_st); | |
413 | tk->stok_kind = STOK_RIGHTPAR; | |
414 | tk->stok_line = state_line; | |
415 | tk->stok_col = curoff - state_bol; | |
416 | tk->stok_file = state_path; | |
417 | tk->stok_next = NULL; | |
418 | ||
419 | return tk; | |
420 | } | |
421 | /* Read identifiers, using an obstack. */ | |
422 | else if (ISALPHA (c) || c == '_' || c == '$' || c == '!' || c == '#') | |
423 | { | |
424 | struct obstack id_obstack; | |
425 | struct state_ident_st *sid = NULL; | |
426 | char *ids = NULL; | |
427 | obstack_init (&id_obstack); | |
428 | curoff = ftell (state_file); | |
429 | while (ISALNUM (c) || c == '_' || c == '$' || c == '!' || c == '#') | |
430 | { | |
431 | obstack_1grow (&id_obstack, c); | |
432 | c = getc (state_file); | |
433 | if (c < 0) | |
434 | break; | |
435 | }; | |
436 | if (c >= 0) | |
437 | ungetc (c, state_file); | |
438 | obstack_1grow (&id_obstack, (char) 0); | |
439 | ids = XOBFINISH (&id_obstack, char *); | |
440 | sid = state_ident_by_name (ids, INSERT); | |
f0a34d7c | 441 | obstack_free (&id_obstack, NULL); |
463ae493 | 442 | ids = NULL; |
443 | tk = XCNEW (struct state_token_st); | |
444 | tk->stok_kind = STOK_NAME; | |
445 | tk->stok_line = state_line; | |
446 | tk->stok_col = curoff - state_bol; | |
447 | tk->stok_file = state_path; | |
448 | tk->stok_next = NULL; | |
449 | tk->stok_un.stok_ident = sid; | |
450 | ||
451 | return tk; | |
452 | } | |
453 | /* Read a string, dealing with escape sequences a la C! */ | |
454 | else if (c == '"') | |
455 | { | |
456 | char *cstr = NULL; | |
457 | int cslen = 0; | |
458 | struct obstack bstring_obstack; | |
459 | obstack_init (&bstring_obstack); | |
460 | curoff = ftell (state_file); | |
461 | while ((c = getc (state_file)) != '"' && c >= 0) | |
462 | { | |
463 | if (ISPRINT (c) && c != '\\') | |
464 | obstack_1grow (&bstring_obstack, (char) c); | |
465 | else if (ISSPACE (c) && c != '\n') | |
466 | obstack_1grow (&bstring_obstack, (char) c); | |
467 | else if (c == '\\') | |
468 | { | |
469 | c = getc (state_file); | |
470 | switch (c) | |
471 | { | |
472 | case 'a': | |
473 | obstack_1grow (&bstring_obstack, '\a'); | |
474 | c = getc (state_file); | |
475 | break; | |
476 | case 'b': | |
477 | obstack_1grow (&bstring_obstack, '\b'); | |
478 | c = getc (state_file); | |
479 | break; | |
480 | case 't': | |
481 | obstack_1grow (&bstring_obstack, '\t'); | |
482 | c = getc (state_file); | |
483 | break; | |
484 | case 'n': | |
485 | obstack_1grow (&bstring_obstack, '\n'); | |
486 | c = getc (state_file); | |
487 | break; | |
488 | case 'v': | |
489 | obstack_1grow (&bstring_obstack, '\v'); | |
490 | c = getc (state_file); | |
491 | break; | |
492 | case 'f': | |
493 | obstack_1grow (&bstring_obstack, '\f'); | |
494 | c = getc (state_file); | |
495 | break; | |
496 | case 'r': | |
497 | obstack_1grow (&bstring_obstack, '\r'); | |
498 | c = getc (state_file); | |
499 | break; | |
500 | case '"': | |
501 | obstack_1grow (&bstring_obstack, '\"'); | |
502 | c = getc (state_file); | |
503 | break; | |
504 | case '\\': | |
505 | obstack_1grow (&bstring_obstack, '\\'); | |
506 | c = getc (state_file); | |
507 | break; | |
508 | case ' ': | |
509 | obstack_1grow (&bstring_obstack, ' '); | |
510 | c = getc (state_file); | |
511 | break; | |
512 | case 'x': | |
513 | { | |
514 | unsigned int cx = 0; | |
515 | if (fscanf (state_file, "%02x", &cx) > 0 && cx > 0) | |
516 | obstack_1grow (&bstring_obstack, cx); | |
517 | else | |
518 | fatal_reading_state | |
519 | (NULL_STATE_TOKEN, | |
520 | "Lexical error in string hex escape"); | |
521 | c = getc (state_file); | |
522 | break; | |
523 | } | |
524 | default: | |
525 | fatal_reading_state | |
526 | (NULL_STATE_TOKEN, | |
527 | "Lexical error - unknown string escape"); | |
528 | } | |
529 | } | |
530 | else | |
531 | fatal_reading_state (NULL_STATE_TOKEN, "Lexical error..."); | |
532 | }; | |
533 | if (c != '"') | |
534 | fatal_reading_state (NULL_STATE_TOKEN, "Unterminated string"); | |
535 | obstack_1grow (&bstring_obstack, '\0'); | |
536 | cstr = XOBFINISH (&bstring_obstack, char *); | |
537 | cslen = strlen (cstr); | |
538 | tk = (struct state_token_st *) | |
539 | xcalloc (sizeof (struct state_token_st) + cslen, 1); | |
540 | tk->stok_kind = STOK_STRING; | |
541 | tk->stok_line = state_line; | |
542 | tk->stok_col = curoff - state_bol; | |
543 | tk->stok_file = state_path; | |
544 | tk->stok_next = NULL; | |
545 | strcpy (tk->stok_un.stok_string, cstr); | |
f0a34d7c | 546 | obstack_free (&bstring_obstack, NULL); |
463ae493 | 547 | |
548 | return tk; | |
549 | } | |
550 | /* Got an unexpected character. */ | |
551 | fatal_reading_state_printf | |
552 | (NULL_STATE_TOKEN, | |
553 | "Lexical error at offset %ld - bad character \\%03o = '%c'", | |
554 | ftell (state_file), c, c); | |
555 | } | |
556 | ||
557 | /* Used for lexical look-ahead. Retrieves the lexical token of rank | |
558 | DEPTH, starting with 0 when reading the state file. Gives null on | |
559 | end of file. */ | |
560 | static struct state_token_st * | |
561 | peek_state_token (int depth) | |
562 | { | |
563 | int remdepth = depth; | |
564 | struct state_token_st **ptoken = &state_token; | |
565 | struct state_token_st *tok = NULL; | |
566 | ||
567 | while (remdepth >= 0) | |
568 | { | |
569 | if (*ptoken == NULL) | |
570 | { | |
571 | *ptoken = tok = read_a_state_token (); | |
572 | if (tok == NULL) | |
573 | return NULL; | |
574 | } | |
575 | tok = *ptoken; | |
576 | ptoken = &((*ptoken)->stok_next); | |
577 | remdepth--; | |
578 | } | |
579 | ||
580 | return tok; | |
581 | } | |
582 | ||
583 | /* Consume the next DEPTH tokens and free them. */ | |
584 | static void | |
585 | next_state_tokens (int depth) | |
586 | { | |
587 | struct state_token_st *n; | |
588 | ||
589 | while (depth > 0) | |
590 | { | |
591 | if (state_token != NULL) | |
592 | { | |
593 | n = state_token->stok_next; | |
594 | free (state_token); | |
595 | state_token = n; | |
596 | } | |
597 | else | |
598 | fatal_reading_state (NULL_STATE_TOKEN, "Tokens stack empty"); | |
599 | ||
600 | depth--; | |
601 | } | |
602 | } | |
603 | ||
604 | /* Safely retrieve the lexical kind of a token. */ | |
605 | static inline enum state_token_en | |
606 | state_token_kind (struct state_token_st *p) | |
607 | { | |
608 | if (p == NULL) | |
609 | return STOK_NONE; | |
610 | else | |
611 | return p->stok_kind; | |
612 | } | |
613 | ||
614 | /* Test if a token is a given name i.e. an identifier. */ | |
615 | static inline bool | |
616 | state_token_is_name (struct state_token_st *p, const char *name) | |
617 | { | |
618 | if (p == NULL) | |
619 | return false; | |
620 | ||
621 | if (p->stok_kind != STOK_NAME) | |
622 | return false; | |
623 | ||
624 | return !strcmp (p->stok_un.stok_ident->stid_name, name); | |
625 | } | |
626 | ||
627 | ||
628 | /* Following routines are useful for serializing datas. | |
629 | * | |
630 | * We want to serialize : | |
631 | * - typedefs list | |
632 | * - structures list | |
463ae493 | 633 | * - variables list |
634 | * | |
635 | * So, we have one routine for each kind of data. The main writing | |
636 | * routine is write_state. The main reading routine is | |
637 | * read_state. Most writing routines write_state_FOO have a | |
638 | * corresponding reading routine read_state_FOO. Reading is done in a | |
639 | * recursive descending way, and any read error is fatal. | |
640 | */ | |
641 | ||
642 | /* When reading the state, we need to remember the previously seen | |
643 | types by their state_number, since GTY-ed types are usually | |
644 | shared. */ | |
645 | static htab_t state_seen_types; | |
646 | ||
647 | /* Return the length of a linked list made of pairs. */ | |
648 | static int pair_list_length (pair_p list); | |
649 | ||
463ae493 | 650 | /* Compute the length of a list of pairs, starting from the first |
651 | one. */ | |
652 | static int | |
653 | pair_list_length (pair_p list) | |
654 | { | |
655 | int nbpair = 0; | |
656 | pair_p l = NULL; | |
657 | for (l = list; l; l = l->next) | |
658 | nbpair++; | |
659 | return nbpair; | |
660 | } | |
661 | ||
662 | /* Write a file location. Files relative to $(srcdir) are quite | |
663 | frequent and are handled specially. This ensures that two gengtype | |
664 | state file-s produced by gengtype on the same GCC source tree are | |
665 | very similar and can be reasonably compared with diff, even if the | |
666 | two GCC source trees have different absolute paths. */ | |
a50dd382 | 667 | void |
668 | state_writer::write_state_fileloc (struct fileloc *floc) | |
463ae493 | 669 | { |
670 | ||
671 | if (floc != NULL && floc->line > 0) | |
672 | { | |
673 | const char *srcrelpath = NULL; | |
674 | gcc_assert (floc->file != NULL); | |
675 | /* Most of the files are inside $(srcdir) so it is worth to | |
676 | handle them specially. */ | |
677 | srcrelpath = get_file_srcdir_relative_path (floc->file); | |
678 | if (srcrelpath != NULL) | |
679 | { | |
a50dd382 | 680 | begin_s_expr ("srcfileloc"); |
463ae493 | 681 | write_state_a_string (srcrelpath); |
682 | } | |
683 | else | |
684 | { | |
a50dd382 | 685 | begin_s_expr ("fileloc"); |
463ae493 | 686 | write_state_a_string (get_input_file_name (floc->file)); |
687 | } | |
688 | fprintf (state_file, " %d", floc->line); | |
a50dd382 | 689 | end_s_expr (); |
463ae493 | 690 | } |
691 | else | |
692 | fprintf (state_file, "nil "); | |
693 | } | |
694 | ||
695 | /* Write a list of fields. */ | |
a50dd382 | 696 | void |
697 | state_writer::write_state_fields (pair_p fields) | |
463ae493 | 698 | { |
699 | int nbfields = pair_list_length (fields); | |
700 | int nbpairs = 0; | |
a50dd382 | 701 | begin_s_expr ("fields"); |
702 | fprintf (state_file, "%d ", nbfields); | |
463ae493 | 703 | nbpairs = write_state_pair_list (fields); |
704 | gcc_assert (nbpairs == nbfields); | |
a50dd382 | 705 | end_s_expr (); |
463ae493 | 706 | } |
707 | ||
708 | /* Write a null-terminated string in our lexical convention, very | |
709 | similar to the convention of C. */ | |
a50dd382 | 710 | void |
711 | state_writer::write_state_a_string (const char *s) | |
463ae493 | 712 | { |
713 | char c; | |
714 | ||
a50dd382 | 715 | write_any_indent (1); |
716 | ||
463ae493 | 717 | fputs (" \"", state_file); |
718 | for (; *s != 0; s++) | |
719 | { | |
720 | c = *s; | |
721 | switch (c) | |
722 | { | |
723 | case '\a': | |
724 | fputs ("\\a", state_file); | |
725 | break; | |
726 | case '\b': | |
727 | fputs ("\\b", state_file); | |
728 | break; | |
729 | case '\t': | |
730 | fputs ("\\t", state_file); | |
731 | break; | |
732 | case '\n': | |
733 | fputs ("\\n", state_file); | |
734 | break; | |
735 | case '\v': | |
736 | fputs ("\\v", state_file); | |
737 | break; | |
738 | case '\f': | |
739 | fputs ("\\f", state_file); | |
740 | break; | |
741 | case '\r': | |
742 | fputs ("\\r", state_file); | |
743 | break; | |
744 | case '\"': | |
745 | fputs ("\\\"", state_file); | |
746 | break; | |
747 | case '\\': | |
748 | fputs ("\\\\", state_file); | |
749 | break; | |
750 | default: | |
751 | if (ISPRINT (c)) | |
752 | putc (c, state_file); | |
753 | else | |
754 | fprintf (state_file, "\\x%02x", (unsigned) c); | |
755 | } | |
756 | } | |
757 | fputs ("\"", state_file); | |
758 | } | |
759 | ||
760 | /* Our option-s have three kinds, each with its writer. */ | |
a50dd382 | 761 | void |
762 | state_writer::write_state_string_option (options_p current) | |
463ae493 | 763 | { |
a50dd382 | 764 | write_any_indent (0); |
463ae493 | 765 | fprintf (state_file, "string "); |
766 | if (current->info.string != NULL) | |
767 | write_state_a_string (current->info.string); | |
768 | else | |
769 | fprintf (state_file, " nil "); | |
770 | } | |
771 | ||
a50dd382 | 772 | void |
773 | state_writer::write_state_type_option (options_p current) | |
463ae493 | 774 | { |
a50dd382 | 775 | write_any_indent (0); |
463ae493 | 776 | fprintf (state_file, "type "); |
777 | write_state_type (current->info.type); | |
778 | } | |
779 | ||
a50dd382 | 780 | void |
781 | state_writer::write_state_nested_option (options_p current) | |
463ae493 | 782 | { |
a50dd382 | 783 | write_any_indent (0); |
463ae493 | 784 | fprintf (state_file, "nested "); |
785 | write_state_type (current->info.nested->type); | |
786 | if (current->info.nested->convert_from != NULL) | |
787 | write_state_a_string (current->info.nested->convert_from); | |
788 | else | |
a50dd382 | 789 | { |
790 | write_any_indent (1); | |
791 | fprintf (state_file, " nil "); | |
792 | } | |
463ae493 | 793 | |
794 | if (current->info.nested->convert_to != NULL) | |
795 | write_state_a_string (current->info.nested->convert_to); | |
796 | else | |
a50dd382 | 797 | { |
798 | write_any_indent (1); | |
799 | fprintf (state_file, " nil "); | |
800 | } | |
463ae493 | 801 | } |
802 | ||
a50dd382 | 803 | void |
804 | state_writer::write_state_option (options_p current) | |
463ae493 | 805 | { |
a50dd382 | 806 | begin_s_expr ("option"); |
463ae493 | 807 | |
a50dd382 | 808 | write_any_indent (0); |
463ae493 | 809 | if (current->name != NULL) |
810 | fprintf (state_file, "%s ", current->name); | |
811 | else | |
812 | fprintf (state_file, "nil "); | |
813 | ||
814 | switch (current->kind) | |
815 | { | |
816 | case OPTION_STRING: | |
817 | write_state_string_option (current); | |
818 | break; | |
819 | case OPTION_TYPE: | |
820 | write_state_type_option (current); | |
821 | break; | |
822 | case OPTION_NESTED: | |
823 | write_state_nested_option (current); | |
824 | break; | |
825 | default: | |
826 | fatal ("Option tag unknown"); | |
827 | } | |
828 | ||
a50dd382 | 829 | /* Terminate the "option" s-expression. */ |
830 | end_s_expr (); | |
463ae493 | 831 | } |
832 | ||
833 | ||
834 | ||
835 | /* Write a list of GTY options. */ | |
a50dd382 | 836 | void |
837 | state_writer::write_state_options (options_p opt) | |
463ae493 | 838 | { |
839 | options_p current; | |
840 | ||
841 | if (opt == NULL) | |
842 | { | |
a50dd382 | 843 | write_any_indent (0); |
844 | fprintf (state_file, "nil "); | |
463ae493 | 845 | return; |
846 | } | |
847 | ||
a50dd382 | 848 | begin_s_expr ("options"); |
463ae493 | 849 | for (current = opt; current != NULL; current = current->next) |
850 | write_state_option (current); | |
a50dd382 | 851 | end_s_expr (); |
463ae493 | 852 | } |
853 | ||
854 | ||
855 | /* Write a bitmap representing a set of GCC front-end languages. */ | |
a50dd382 | 856 | void |
857 | state_writer::write_state_lang_bitmap (lang_bitmap bitmap) | |
463ae493 | 858 | { |
a50dd382 | 859 | write_any_indent (0); |
463ae493 | 860 | fprintf (state_file, "%d ", (int) bitmap); |
861 | } | |
862 | ||
863 | /* Write version information. */ | |
a50dd382 | 864 | void |
865 | state_writer::write_state_version (const char *version) | |
463ae493 | 866 | { |
a50dd382 | 867 | begin_s_expr ("version"); |
463ae493 | 868 | write_state_a_string (version); |
a50dd382 | 869 | end_s_expr (); |
463ae493 | 870 | } |
871 | ||
463ae493 | 872 | /* Write a scalar type. We have only two of these. */ |
a50dd382 | 873 | void |
874 | state_writer::write_state_scalar_type (type_p current) | |
463ae493 | 875 | { |
a50dd382 | 876 | write_any_indent (0); |
463ae493 | 877 | if (current == &scalar_nonchar) |
878 | fprintf (state_file, "scalar_nonchar "); | |
879 | else if (current == &scalar_char) | |
880 | fprintf (state_file, "scalar_char "); | |
881 | else | |
882 | fatal ("Unexpected type in write_state_scalar_type"); | |
883 | ||
884 | write_state_common_type_content (current); | |
885 | } | |
886 | ||
887 | /* Write the string type. There is only one such thing! */ | |
a50dd382 | 888 | void |
889 | state_writer::write_state_string_type (type_p current) | |
463ae493 | 890 | { |
891 | if (current == &string_type) | |
892 | { | |
a50dd382 | 893 | write_any_indent (0); |
463ae493 | 894 | fprintf (state_file, "string "); |
895 | write_state_common_type_content (current); | |
896 | } | |
897 | else | |
898 | fatal ("Unexpected type in write_state_string_type"); | |
899 | } | |
900 | ||
f1f41a6c | 901 | /* Write an undefined type. */ |
a50dd382 | 902 | void |
903 | state_writer::write_state_undefined_type (type_p current) | |
f1f41a6c | 904 | { |
905 | DBGPRINTF ("undefined type @ %p #%d '%s'", (void *) current, | |
906 | current->state_number, current->u.s.tag); | |
a50dd382 | 907 | write_any_indent (0); |
f1f41a6c | 908 | fprintf (state_file, "undefined "); |
909 | gcc_assert (current->gc_used == GC_UNUSED); | |
910 | write_state_common_type_content (current); | |
911 | if (current->u.s.tag != NULL) | |
912 | write_state_a_string (current->u.s.tag); | |
913 | else | |
a50dd382 | 914 | { |
915 | write_any_indent (0); | |
916 | fprintf (state_file, "nil"); | |
917 | } | |
f1f41a6c | 918 | |
919 | write_state_fileloc (type_lineloc (current)); | |
920 | } | |
921 | ||
463ae493 | 922 | |
923 | /* Common code to write structure like types. */ | |
a50dd382 | 924 | void |
925 | state_writer::write_state_struct_union_type (type_p current, | |
926 | const char *kindstr) | |
463ae493 | 927 | { |
928 | DBGPRINTF ("%s type @ %p #%d '%s'", kindstr, (void *) current, | |
929 | current->state_number, current->u.s.tag); | |
a50dd382 | 930 | write_any_indent (0); |
463ae493 | 931 | fprintf (state_file, "%s ", kindstr); |
932 | write_state_common_type_content (current); | |
933 | if (current->u.s.tag != NULL) | |
934 | write_state_a_string (current->u.s.tag); | |
935 | else | |
a50dd382 | 936 | { |
937 | write_any_indent (0); | |
938 | fprintf (state_file, "nil"); | |
939 | } | |
463ae493 | 940 | |
941 | write_state_fileloc (type_lineloc (current)); | |
942 | write_state_fields (current->u.s.fields); | |
943 | write_state_options (current->u.s.opt); | |
944 | write_state_lang_bitmap (current->u.s.bitmap); | |
945 | } | |
946 | ||
947 | ||
948 | /* Write a GTY struct type. */ | |
a50dd382 | 949 | void |
950 | state_writer::write_state_struct_type (type_p current) | |
463ae493 | 951 | { |
952 | write_state_struct_union_type (current, "struct"); | |
953 | write_state_type (current->u.s.lang_struct); | |
b1ca3490 | 954 | write_state_type (current->u.s.base_class); |
463ae493 | 955 | } |
956 | ||
2b15d2ba | 957 | /* Write a GTY user-defined struct type. */ |
a50dd382 | 958 | void |
959 | state_writer::write_state_user_struct_type (type_p current) | |
2b15d2ba | 960 | { |
961 | DBGPRINTF ("user_struct type @ %p #%d '%s'", (void *) current, | |
962 | current->state_number, current->u.s.tag); | |
a50dd382 | 963 | write_any_indent (0); |
2b15d2ba | 964 | fprintf (state_file, "user_struct "); |
965 | write_state_common_type_content (current); | |
966 | if (current->u.s.tag != NULL) | |
967 | write_state_a_string (current->u.s.tag); | |
968 | else | |
a50dd382 | 969 | { |
970 | write_any_indent (0); | |
971 | fprintf (state_file, "nil"); | |
972 | } | |
2b15d2ba | 973 | write_state_fileloc (type_lineloc (current)); |
974 | write_state_fields (current->u.s.fields); | |
975 | } | |
976 | ||
463ae493 | 977 | /* write a GTY union type. */ |
a50dd382 | 978 | void |
979 | state_writer::write_state_union_type (type_p current) | |
463ae493 | 980 | { |
981 | write_state_struct_union_type (current, "union"); | |
982 | write_state_type (current->u.s.lang_struct); | |
983 | } | |
984 | ||
985 | /* Write a lang_struct type. This is tricky and was painful to debug, | |
986 | we deal with the next field specifically within their lang_struct | |
987 | subfield, which points to a linked list of homonumous types. | |
988 | Change this function with extreme care, see also | |
989 | read_state_lang_struct_type. */ | |
a50dd382 | 990 | void |
991 | state_writer::write_state_lang_struct_type (type_p current) | |
463ae493 | 992 | { |
993 | int nbhomontype = 0; | |
994 | type_p hty = NULL; | |
995 | const char *homoname = 0; | |
996 | write_state_struct_union_type (current, "lang_struct"); | |
9d75589a | 997 | /* lang_struct-ures are particularly tricky, since their |
463ae493 | 998 | u.s.lang_struct field gives a list of homonymous struct-s or |
999 | union-s! */ | |
1000 | DBGPRINTF ("lang_struct @ %p #%d", (void *) current, current->state_number); | |
1001 | for (hty = current->u.s.lang_struct; hty != NULL; hty = hty->next) | |
1002 | { | |
1003 | nbhomontype++; | |
1004 | DBGPRINTF ("homonymous #%d hty @ %p #%d '%s'", nbhomontype, | |
1005 | (void *) hty, hty->state_number, hty->u.s.tag); | |
1006 | /* Every member of the homonymous list should have the same tag. */ | |
2b15d2ba | 1007 | gcc_assert (union_or_struct_p (hty)); |
463ae493 | 1008 | gcc_assert (hty->u.s.lang_struct == current); |
1009 | if (!homoname) | |
1010 | homoname = hty->u.s.tag; | |
1011 | gcc_assert (strcmp (homoname, hty->u.s.tag) == 0); | |
1012 | } | |
a50dd382 | 1013 | begin_s_expr ("homotypes"); |
1014 | fprintf (state_file, "%d", nbhomontype); | |
463ae493 | 1015 | for (hty = current->u.s.lang_struct; hty != NULL; hty = hty->next) |
1016 | write_state_type (hty); | |
a50dd382 | 1017 | end_s_expr (); |
463ae493 | 1018 | } |
1019 | ||
463ae493 | 1020 | /* Write a pointer type. */ |
a50dd382 | 1021 | void |
1022 | state_writer::write_state_pointer_type (type_p current) | |
463ae493 | 1023 | { |
a50dd382 | 1024 | write_any_indent (0); |
463ae493 | 1025 | fprintf (state_file, "pointer "); |
1026 | write_state_common_type_content (current); | |
1027 | write_state_type (current->u.p); | |
1028 | } | |
1029 | ||
1030 | /* Write an array type. */ | |
a50dd382 | 1031 | void |
1032 | state_writer::write_state_array_type (type_p current) | |
463ae493 | 1033 | { |
a50dd382 | 1034 | write_any_indent (0); |
463ae493 | 1035 | fprintf (state_file, "array "); |
1036 | write_state_common_type_content (current); | |
1037 | if (current->u.a.len != NULL) | |
1038 | write_state_a_string (current->u.a.len); | |
1039 | else | |
a50dd382 | 1040 | { |
1041 | write_any_indent (1); | |
1042 | fprintf (state_file, " nil"); | |
1043 | } | |
463ae493 | 1044 | |
a50dd382 | 1045 | write_any_indent (1); |
463ae493 | 1046 | fprintf (state_file, " "); |
1047 | write_state_type (current->u.a.p); | |
1048 | } | |
1049 | ||
1050 | /* Write the gc_used information. */ | |
a50dd382 | 1051 | void |
1052 | state_writer::write_state_gc_used (enum gc_used_enum gus) | |
463ae493 | 1053 | { |
a50dd382 | 1054 | write_any_indent (1); |
463ae493 | 1055 | switch (gus) |
1056 | { | |
1057 | case GC_UNUSED: | |
1058 | fprintf (state_file, " gc_unused"); | |
1059 | break; | |
1060 | case GC_USED: | |
1061 | fprintf (state_file, " gc_used"); | |
1062 | break; | |
1063 | case GC_MAYBE_POINTED_TO: | |
1064 | fprintf (state_file, " gc_maybe_pointed_to"); | |
1065 | break; | |
1066 | case GC_POINTED_TO: | |
1067 | fprintf (state_file, " gc_pointed_to"); | |
1068 | break; | |
1069 | default: | |
1070 | gcc_unreachable (); | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | /* Utility routine to write the common content of all types. Notice | |
1075 | that the next field is *not* written on purpose. */ | |
a50dd382 | 1076 | void |
1077 | state_writer::write_state_common_type_content (type_p current) | |
463ae493 | 1078 | { |
a50dd382 | 1079 | write_any_indent (0); |
463ae493 | 1080 | fprintf (state_file, "%d ", current->state_number); |
1081 | /* We do not write the next type, because list of types are | |
1082 | explicitly written. However, lang_struct are special in that | |
1083 | respect. See function write_state_lang_struct_type for more. */ | |
1084 | write_state_type (current->pointer_to); | |
1085 | write_state_gc_used (current->gc_used); | |
1086 | } | |
1087 | ||
1088 | ||
1089 | /* The important and recursive routine writing GTY types as understood | |
1090 | by gengtype. Types which have a positive state_number have already | |
1091 | been seen and written. */ | |
a50dd382 | 1092 | void |
1093 | state_writer::write_state_type (type_p current) | |
463ae493 | 1094 | { |
a50dd382 | 1095 | write_any_indent (0); |
463ae493 | 1096 | if (current == NULL) |
1097 | { | |
1098 | fprintf (state_file, "nil "); | |
1099 | return; | |
1100 | } | |
1101 | ||
a50dd382 | 1102 | begin_s_expr ("type"); |
463ae493 | 1103 | |
1104 | if (current->state_number > 0) | |
a50dd382 | 1105 | { |
1106 | write_any_indent (0); | |
1107 | fprintf (state_file, "already_seen %d", current->state_number); | |
1108 | } | |
463ae493 | 1109 | else |
1110 | { | |
ae84f584 | 1111 | m_state_written_type_count++; |
1112 | DBGPRINTF ("writing type #%d @%p old number %d", m_state_written_type_count, | |
463ae493 | 1113 | (void *) current, current->state_number); |
ae84f584 | 1114 | current->state_number = m_state_written_type_count; |
463ae493 | 1115 | switch (current->kind) |
1116 | { | |
25d34a34 | 1117 | case TYPE_NONE: |
1118 | gcc_unreachable (); | |
f1f41a6c | 1119 | case TYPE_UNDEFINED: |
1120 | write_state_undefined_type (current); | |
1121 | break; | |
463ae493 | 1122 | case TYPE_STRUCT: |
1123 | write_state_struct_type (current); | |
1124 | break; | |
2b15d2ba | 1125 | case TYPE_USER_STRUCT: |
1126 | write_state_user_struct_type (current); | |
1127 | break; | |
463ae493 | 1128 | case TYPE_UNION: |
1129 | write_state_union_type (current); | |
1130 | break; | |
1131 | case TYPE_POINTER: | |
1132 | write_state_pointer_type (current); | |
1133 | break; | |
1134 | case TYPE_ARRAY: | |
1135 | write_state_array_type (current); | |
1136 | break; | |
1137 | case TYPE_LANG_STRUCT: | |
1138 | write_state_lang_struct_type (current); | |
1139 | break; | |
463ae493 | 1140 | case TYPE_SCALAR: |
1141 | write_state_scalar_type (current); | |
1142 | break; | |
1143 | case TYPE_STRING: | |
1144 | write_state_string_type (current); | |
1145 | break; | |
463ae493 | 1146 | } |
1147 | } | |
1148 | ||
a50dd382 | 1149 | /* Terminate the "type" s-expression. */ |
1150 | end_s_expr (); | |
463ae493 | 1151 | } |
1152 | ||
1153 | ||
1154 | /* Write a pair. */ | |
a50dd382 | 1155 | void |
1156 | state_writer::write_state_pair (pair_p current) | |
463ae493 | 1157 | { |
1158 | if (current == NULL) | |
1159 | { | |
a50dd382 | 1160 | write_any_indent (0); |
463ae493 | 1161 | fprintf (state_file, "nil)"); |
1162 | return; | |
1163 | } | |
1164 | ||
a50dd382 | 1165 | begin_s_expr ("pair"); |
463ae493 | 1166 | |
1167 | if (current->name != NULL) | |
1168 | write_state_a_string (current->name); | |
1169 | else | |
1170 | write_state_a_string ("nil"); | |
1171 | ||
1172 | write_state_type (current->type); | |
1173 | write_state_fileloc (&(current->line)); | |
1174 | write_state_options (current->opt); | |
1175 | ||
a50dd382 | 1176 | /* Terminate the "pair" s-expression. */ |
1177 | end_s_expr (); | |
463ae493 | 1178 | } |
1179 | ||
1180 | /* Write a pair list and return the number of pairs written. */ | |
a50dd382 | 1181 | int |
1182 | state_writer::write_state_pair_list (pair_p list) | |
463ae493 | 1183 | { |
1184 | int nbpair = 0; | |
1185 | pair_p current; | |
1186 | ||
1187 | for (current = list; current != NULL; current = current->next) | |
1188 | { | |
1189 | write_state_pair (current); | |
1190 | nbpair++; | |
1191 | } | |
1192 | return nbpair; | |
1193 | ||
1194 | } | |
1195 | ||
eb06b251 | 1196 | /* When writing imported linked lists, like typedefs, structures, ... we count |
1197 | their length first and write it. This eases the reading, and enables an | |
1198 | extra verification on the number of actually read items. */ | |
463ae493 | 1199 | |
1200 | /* Write our typedefs. */ | |
a50dd382 | 1201 | void |
1202 | state_writer::write_state_typedefs (void) | |
463ae493 | 1203 | { |
1204 | int nbtypedefs = pair_list_length (typedefs); | |
1205 | int nbpairs = 0; | |
a50dd382 | 1206 | begin_s_expr ("typedefs"); |
1207 | fprintf (state_file, "%d", nbtypedefs); | |
463ae493 | 1208 | nbpairs = write_state_pair_list (typedefs); |
1209 | gcc_assert (nbpairs == nbtypedefs); | |
a50dd382 | 1210 | end_s_expr (); |
463ae493 | 1211 | if (verbosity_level >= 2) |
1212 | printf ("%s wrote %d typedefs\n", progname, nbtypedefs); | |
1213 | } | |
1214 | ||
1215 | /* Write our structures. */ | |
a50dd382 | 1216 | void |
1217 | state_writer::write_state_structures (void) | |
463ae493 | 1218 | { |
1219 | int nbstruct = 0; | |
1220 | type_p current; | |
1221 | ||
1222 | for (current = structures; current != NULL; current = current->next) | |
1223 | nbstruct++; | |
1224 | ||
a50dd382 | 1225 | begin_s_expr ("structures"); |
1226 | fprintf (state_file, "%d", nbstruct); | |
463ae493 | 1227 | |
1228 | for (current = structures; current != NULL; current = current->next) | |
a50dd382 | 1229 | { |
1230 | write_new_line (); | |
1231 | write_state_type (current); | |
1232 | } | |
463ae493 | 1233 | |
a50dd382 | 1234 | /* Terminate the "structures" s-expression. */ |
1235 | end_s_expr (); | |
463ae493 | 1236 | if (verbosity_level >= 2) |
1237 | printf ("%s wrote %d structures in state\n", progname, nbstruct); | |
1238 | } | |
1239 | ||
463ae493 | 1240 | /* Write our variables. */ |
a50dd382 | 1241 | void |
1242 | state_writer::write_state_variables (void) | |
463ae493 | 1243 | { |
1244 | int nbvars = pair_list_length (variables); | |
1245 | int nbpairs = 0; | |
a50dd382 | 1246 | begin_s_expr ("variables"); |
1247 | fprintf (state_file, "%d", nbvars); | |
463ae493 | 1248 | nbpairs = write_state_pair_list (variables); |
1249 | gcc_assert (nbpairs == nbvars); | |
a50dd382 | 1250 | end_s_expr (); |
463ae493 | 1251 | if (verbosity_level >= 2) |
1252 | printf ("%s wrote %d variables.\n", progname, nbvars); | |
1253 | } | |
1254 | ||
1255 | /* Write the source directory. File locations within the source | |
1256 | directory have been written specifically. */ | |
a50dd382 | 1257 | void |
1258 | state_writer::write_state_srcdir (void) | |
463ae493 | 1259 | { |
a50dd382 | 1260 | begin_s_expr ("srcdir"); |
463ae493 | 1261 | write_state_a_string (srcdir); |
a50dd382 | 1262 | end_s_expr (); |
463ae493 | 1263 | } |
1264 | ||
1265 | /* Count and write the list of our files. */ | |
a50dd382 | 1266 | void |
1267 | state_writer::write_state_files_list (void) | |
463ae493 | 1268 | { |
1269 | int i = 0; | |
1270 | /* Write the list of files with their lang_bitmap. */ | |
a50dd382 | 1271 | begin_s_expr ("fileslist"); |
1272 | fprintf (state_file, "%d", (int) num_gt_files); | |
463ae493 | 1273 | for (i = 0; i < (int) num_gt_files; i++) |
1274 | { | |
1275 | const char *cursrcrelpath = NULL; | |
1276 | const input_file *curfil = gt_files[i]; | |
1277 | /* Most of the files are inside $(srcdir) so it is worth to | |
1278 | handle them specially. */ | |
1279 | cursrcrelpath = get_file_srcdir_relative_path (curfil); | |
1280 | if (cursrcrelpath) | |
1281 | { | |
a50dd382 | 1282 | begin_s_expr ("srcfile"); |
1283 | fprintf (state_file, "%d ", get_lang_bitmap (curfil)); | |
463ae493 | 1284 | write_state_a_string (cursrcrelpath); |
1285 | } | |
1286 | else | |
1287 | { | |
a50dd382 | 1288 | begin_s_expr ("file"); |
1289 | fprintf (state_file, "%d ", get_lang_bitmap (curfil)); | |
463ae493 | 1290 | write_state_a_string (get_input_file_name (curfil)); |
1291 | } | |
a50dd382 | 1292 | /* Terminate the inner s-expression (either "srcfile" or "file"). */ |
1293 | end_s_expr (); | |
463ae493 | 1294 | } |
a50dd382 | 1295 | /* Terminate the "fileslist" s-expression. */ |
1296 | end_s_expr (); | |
463ae493 | 1297 | } |
1298 | ||
1299 | /* Write the list of GCC front-end languages. */ | |
a50dd382 | 1300 | void |
1301 | state_writer::write_state_languages (void) | |
463ae493 | 1302 | { |
1303 | int i = 0; | |
a50dd382 | 1304 | begin_s_expr ("languages"); |
1305 | fprintf (state_file, "%d", (int) num_lang_dirs); | |
463ae493 | 1306 | for (i = 0; i < (int) num_lang_dirs; i++) |
1307 | { | |
1308 | /* Languages names are identifiers, we expect only letters or | |
1309 | underscores or digits in them. In particular, C++ is not a | |
1310 | valid language name, but cp is valid. */ | |
1311 | fprintf (state_file, " %s", lang_dir_names[i]); | |
1312 | } | |
a50dd382 | 1313 | end_s_expr (); |
463ae493 | 1314 | } |
1315 | ||
1316 | /* Write the trailer. */ | |
1317 | static void | |
1318 | write_state_trailer (void) | |
1319 | { | |
1320 | /* This test should probably catch IO errors like disk full... */ | |
1321 | if (fputs ("\n(!endfile)\n", state_file) == EOF) | |
1322 | fatal ("failed to write state trailer [%s]", xstrerror (errno)); | |
1323 | } | |
1324 | ||
1325 | /* The write_state routine is the only writing routine called by main | |
1326 | in gengtype.c. To avoid messing the state if gengtype is | |
1327 | interrupted or aborted, we write a temporary file and rename it | |
1328 | after having written it in totality. */ | |
1329 | void | |
1330 | write_state (const char *state_path) | |
1331 | { | |
1332 | long statelen = 0; | |
1333 | time_t now = 0; | |
1334 | char *temp_state_path = NULL; | |
1335 | char tempsuffix[40]; | |
1336 | time (&now); | |
1337 | ||
1338 | /* We write a unique temporary file which is renamed when complete | |
1339 | * only. So even if gengtype is interrupted, the written state file | |
1340 | * won't be partially written, since the temporary file is not yet | |
1341 | * renamed in that case. */ | |
1342 | memset (tempsuffix, 0, sizeof (tempsuffix)); | |
1343 | snprintf (tempsuffix, sizeof (tempsuffix) - 1, "-%ld-%d.tmp", (long) now, | |
1344 | (int) getpid ()); | |
1345 | temp_state_path = concat (state_path, tempsuffix, NULL); | |
1346 | state_file = fopen (temp_state_path, "w"); | |
1347 | if (state_file == NULL) | |
1348 | fatal ("Failed to open file %s for writing state: %s", | |
1349 | temp_state_path, xstrerror (errno)); | |
1350 | if (verbosity_level >= 3) | |
1351 | printf ("%s writing state file %s temporarily in %s\n", | |
1352 | progname, state_path, temp_state_path); | |
1353 | /* This is the first line of the state. Perhaps the file utility | |
1354 | could know about that, so don't change it often. */ | |
1355 | fprintf (state_file, ";;;;@@@@ GCC gengtype state\n"); | |
1356 | /* Output a few comments for humans. */ | |
1357 | fprintf (state_file, | |
1358 | ";;; DON'T EDIT THIS FILE, since generated by GCC's gengtype\n"); | |
1359 | fprintf (state_file, | |
1360 | ";;; The format of this file is tied to a particular version of GCC.\n"); | |
1361 | fprintf (state_file, | |
1362 | ";;; Don't parse this file wihout knowing GCC gengtype internals.\n"); | |
1363 | fprintf (state_file, | |
1364 | ";;; This file should be parsed by the same %s which wrote it.\n", | |
1365 | progname); | |
a50dd382 | 1366 | |
1367 | state_writer sw; | |
1368 | ||
463ae493 | 1369 | /* The first non-comment significant line gives the version string. */ |
a50dd382 | 1370 | sw.write_state_version (version_string); |
1371 | sw.write_state_srcdir (); | |
1372 | sw.write_state_languages (); | |
1373 | sw.write_state_files_list (); | |
1374 | sw.write_state_structures (); | |
1375 | sw.write_state_typedefs (); | |
a50dd382 | 1376 | sw.write_state_variables (); |
463ae493 | 1377 | write_state_trailer (); |
1378 | statelen = ftell (state_file); | |
1379 | if (ferror (state_file)) | |
1380 | fatal ("output error when writing state file %s [%s]", | |
1381 | temp_state_path, xstrerror (errno)); | |
1382 | if (fclose (state_file)) | |
1383 | fatal ("failed to close state file %s [%s]", | |
1384 | temp_state_path, xstrerror (errno)); | |
1385 | if (rename (temp_state_path, state_path)) | |
1386 | fatal ("failed to rename %s to state file %s [%s]", temp_state_path, | |
1387 | state_path, xstrerror (errno)); | |
1388 | free (temp_state_path); | |
1389 | ||
1390 | if (verbosity_level >= 1) | |
1391 | printf ("%s wrote state file %s of %ld bytes with %d GTY-ed types\n", | |
ae84f584 | 1392 | progname, state_path, statelen, sw.m_state_written_type_count); |
463ae493 | 1393 | |
1394 | } | |
1395 | \f | |
1396 | /** End of writing routines! The corresponding reading routines follow. **/ | |
1397 | ||
1398 | ||
1399 | ||
1400 | /* Forward declarations, since some read_state_* functions are | |
1401 | recursive! */ | |
1402 | static void read_state_fileloc (struct fileloc *line); | |
1403 | static void read_state_options (options_p *opt); | |
1404 | static void read_state_type (type_p *current); | |
1405 | static void read_state_pair (pair_p *pair); | |
1406 | /* Return the number of pairs actually read. */ | |
1407 | static int read_state_pair_list (pair_p *list); | |
1408 | static void read_state_fields (pair_p *fields); | |
1409 | static void read_state_common_type_content (type_p current); | |
1410 | ||
1411 | ||
1412 | ||
1413 | ||
1414 | /* Record into the state_seen_types hash-table a type which we are | |
1415 | reading, to enable recursive or circular references to it. */ | |
1416 | static void | |
1417 | record_type (type_p type) | |
1418 | { | |
1419 | PTR *slot; | |
1420 | ||
1421 | slot = htab_find_slot (state_seen_types, type, INSERT); | |
1422 | gcc_assert (slot); | |
1423 | ||
1424 | *slot = type; | |
1425 | } | |
1426 | ||
1427 | /* Read an already seen type. */ | |
1428 | static void | |
1429 | read_state_already_seen_type (type_p *type) | |
1430 | { | |
1431 | struct state_token_st *t0 = peek_state_token (0); | |
1432 | ||
1433 | if (state_token_kind (t0) == STOK_INTEGER) | |
1434 | { | |
1435 | PTR *slot = NULL; | |
1436 | struct type loctype = { TYPE_SCALAR, 0, 0, 0, GC_UNUSED, {0} }; | |
1437 | ||
1438 | loctype.state_number = t0->stok_un.stok_num; | |
1439 | slot = htab_find_slot (state_seen_types, &loctype, NO_INSERT); | |
1440 | if (slot == NULL) | |
1441 | { | |
1442 | fatal_reading_state (t0, "Unknown type"); | |
1443 | } | |
1444 | ||
1445 | next_state_tokens (1); | |
1446 | *type = (type_p) *slot; | |
1447 | } | |
1448 | else | |
1449 | { | |
1450 | fatal_reading_state (t0, "Bad seen type"); | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | ||
1455 | /* Read the scalar_nonchar type. */ | |
1456 | static void | |
1457 | read_state_scalar_nonchar_type (type_p *type) | |
1458 | { | |
1459 | *type = &scalar_nonchar; | |
1460 | read_state_common_type_content (*type); | |
1461 | } | |
1462 | ||
1463 | ||
1464 | /* Read the scalar_char type. */ | |
1465 | static void | |
1466 | read_state_scalar_char_type (type_p *type) | |
1467 | { | |
1468 | *type = &scalar_char; | |
1469 | read_state_common_type_content (*type); | |
1470 | } | |
1471 | ||
463ae493 | 1472 | /* Read the string_type. */ |
1473 | static void | |
1474 | read_state_string_type (type_p *type) | |
1475 | { | |
1476 | *type = &string_type; | |
1477 | read_state_common_type_content (*type); | |
1478 | } | |
1479 | ||
1480 | ||
1481 | /* Read a lang_bitmap representing a set of GCC front-end languages. */ | |
1482 | static void | |
1483 | read_state_lang_bitmap (lang_bitmap *bitmap) | |
1484 | { | |
1485 | struct state_token_st *t; | |
1486 | ||
1487 | t = peek_state_token (0); | |
1488 | if (state_token_kind (t) == STOK_INTEGER) | |
1489 | { | |
1490 | *bitmap = t->stok_un.stok_num; | |
1491 | next_state_tokens (1); | |
1492 | } | |
1493 | else | |
1494 | { | |
1495 | fatal_reading_state (t, "Bad syntax for bitmap"); | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | ||
f1f41a6c | 1500 | /* Read an undefined type. */ |
1501 | static void | |
1502 | read_state_undefined_type (type_p type) | |
1503 | { | |
1504 | struct state_token_st *t0; | |
1505 | ||
1506 | type->kind = TYPE_UNDEFINED; | |
1507 | read_state_common_type_content (type); | |
1508 | t0 = peek_state_token (0); | |
1509 | if (state_token_kind (t0) == STOK_STRING) | |
1510 | { | |
1511 | if (state_token_is_name (t0, "nil")) | |
1512 | { | |
1513 | type->u.s.tag = NULL; | |
1514 | DBGPRINTF ("read anonymous undefined type @%p #%d", | |
1515 | (void *) type, type->state_number); | |
1516 | } | |
1517 | else | |
1518 | { | |
1519 | type->u.s.tag = xstrdup (t0->stok_un.stok_string); | |
1520 | DBGPRINTF ("read undefined type @%p #%d '%s'", | |
1521 | (void *) type, type->state_number, type->u.s.tag); | |
1522 | } | |
1523 | ||
1524 | next_state_tokens (1); | |
1525 | read_state_fileloc (&(type->u.s.line)); | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | fatal_reading_state (t0, "Bad tag in undefined type"); | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | ||
463ae493 | 1534 | /* Read a GTY-ed struct type. */ |
1535 | static void | |
1536 | read_state_struct_type (type_p type) | |
1537 | { | |
1538 | struct state_token_st *t0; | |
1539 | ||
1540 | type->kind = TYPE_STRUCT; | |
1541 | read_state_common_type_content (type); | |
1542 | t0 = peek_state_token (0); | |
1543 | if (state_token_kind (t0) == STOK_STRING) | |
1544 | { | |
1545 | if (state_token_is_name (t0, "nil")) | |
1546 | { | |
1547 | type->u.s.tag = NULL; | |
1548 | DBGPRINTF ("read anonymous struct type @%p #%d", | |
1549 | (void *) type, type->state_number); | |
1550 | } | |
1551 | else | |
1552 | { | |
1553 | type->u.s.tag = xstrdup (t0->stok_un.stok_string); | |
1554 | DBGPRINTF ("read struct type @%p #%d '%s'", | |
1555 | (void *) type, type->state_number, type->u.s.tag); | |
1556 | } | |
1557 | ||
1558 | next_state_tokens (1); | |
1559 | read_state_fileloc (&(type->u.s.line)); | |
1560 | read_state_fields (&(type->u.s.fields)); | |
1561 | read_state_options (&(type->u.s.opt)); | |
1562 | read_state_lang_bitmap (&(type->u.s.bitmap)); | |
1563 | read_state_type (&(type->u.s.lang_struct)); | |
b1ca3490 | 1564 | read_state_type (&(type->u.s.base_class)); |
80303fa7 | 1565 | if (type->u.s.base_class) |
1566 | add_subclass (type->u.s.base_class, type); | |
463ae493 | 1567 | } |
1568 | else | |
1569 | { | |
1570 | fatal_reading_state (t0, "Bad tag in struct type"); | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | ||
2b15d2ba | 1575 | /* Read a GTY-ed user-provided struct TYPE. */ |
1576 | ||
1577 | static void | |
1578 | read_state_user_struct_type (type_p type) | |
1579 | { | |
1580 | struct state_token_st *t0; | |
1581 | ||
1582 | type->kind = TYPE_USER_STRUCT; | |
1583 | read_state_common_type_content (type); | |
1584 | t0 = peek_state_token (0); | |
1585 | if (state_token_kind (t0) == STOK_STRING) | |
1586 | { | |
1587 | if (state_token_is_name (t0, "nil")) | |
1588 | { | |
1589 | type->u.s.tag = NULL; | |
1590 | DBGPRINTF ("read anonymous struct type @%p #%d", | |
1591 | (void *) type, type->state_number); | |
1592 | } | |
1593 | else | |
1594 | { | |
1595 | type->u.s.tag = xstrdup (t0->stok_un.stok_string); | |
1596 | DBGPRINTF ("read struct type @%p #%d '%s'", | |
1597 | (void *) type, type->state_number, type->u.s.tag); | |
1598 | } | |
1599 | ||
1600 | next_state_tokens (1); | |
1601 | read_state_fileloc (&(type->u.s.line)); | |
1602 | read_state_fields (&(type->u.s.fields)); | |
1603 | } | |
1604 | else | |
1605 | { | |
1606 | fatal_reading_state (t0, "Bad tag in user-struct type"); | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | ||
463ae493 | 1611 | /* Read a GTY-ed union type. */ |
1612 | static void | |
1613 | read_state_union_type (type_p type) | |
1614 | { | |
1615 | struct state_token_st *t0; | |
1616 | ||
1617 | type->kind = TYPE_UNION; | |
1618 | read_state_common_type_content (type); | |
1619 | t0 = peek_state_token (0); | |
1620 | if (state_token_kind (t0) == STOK_STRING) | |
1621 | { | |
1622 | if (state_token_is_name (t0, "nil")) | |
1623 | { | |
1624 | type->u.s.tag = NULL; | |
1625 | DBGPRINTF ("read anonymous union type @%p #%d", | |
1626 | (void *) type, type->state_number); | |
1627 | } | |
1628 | else | |
1629 | { | |
1630 | type->u.s.tag = xstrdup (t0->stok_un.stok_string); | |
1631 | DBGPRINTF ("read union type @%p #%d '%s'", | |
1632 | (void *) type, type->state_number, type->u.s.tag); | |
1633 | } | |
1634 | next_state_tokens (1); | |
1635 | read_state_fileloc (&(type->u.s.line)); | |
1636 | read_state_fields (&(type->u.s.fields)); | |
1637 | read_state_options (&(type->u.s.opt)); | |
1638 | read_state_lang_bitmap (&(type->u.s.bitmap)); | |
1639 | read_state_type (&(type->u.s.lang_struct)); | |
1640 | } | |
1641 | else | |
1642 | fatal_reading_state (t0, "Bad tag in union type"); | |
1643 | } | |
1644 | ||
1645 | ||
1646 | /* Read a GTY-ed pointer type. */ | |
1647 | static void | |
1648 | read_state_pointer_type (type_p type) | |
1649 | { | |
1650 | type->kind = TYPE_POINTER; | |
1651 | read_state_common_type_content (type); | |
1652 | DBGPRINTF ("read pointer type @%p #%d", (void *) type, type->state_number); | |
1653 | read_state_type (&(type->u.p)); | |
1654 | } | |
1655 | ||
1656 | ||
1657 | /* Read a GTY-ed array type. */ | |
1658 | static void | |
1659 | read_state_array_type (type_p type) | |
1660 | { | |
1661 | struct state_token_st *t0; | |
1662 | ||
1663 | type->kind = TYPE_ARRAY; | |
1664 | read_state_common_type_content (type); | |
1665 | t0 = peek_state_token (0); | |
1666 | if (state_token_kind (t0) == STOK_STRING) | |
1667 | { | |
1668 | type->u.a.len = xstrdup (t0->stok_un.stok_string); | |
1669 | DBGPRINTF ("read array type @%p #%d length '%s'", | |
1670 | (void *) type, type->state_number, type->u.a.len); | |
1671 | next_state_tokens (1); | |
1672 | } | |
1673 | ||
1674 | else if (state_token_is_name (t0, "nil")) | |
1675 | { | |
1676 | type->u.a.len = NULL; | |
1677 | DBGPRINTF ("read array type @%p #%d without length", | |
1678 | (void *) type, type->state_number); | |
1679 | next_state_tokens (1); | |
1680 | } | |
1681 | ||
1682 | else | |
1683 | fatal_reading_state (t0, "Bad array name type"); | |
1684 | read_state_type (&(type->u.a.p)); | |
1685 | } | |
1686 | ||
1687 | ||
1688 | ||
1689 | /* Read a lang_struct type for GTY-ed struct-s which depends upon GCC | |
1690 | front-end languages. This is a tricky function and it was painful | |
1691 | to debug. Change it with extreme care. See also | |
1692 | write_state_lang_struct_type. */ | |
1693 | static void | |
1694 | read_state_lang_struct_type (type_p type) | |
1695 | { | |
1696 | struct state_token_st *t0 = NULL; | |
1697 | struct state_token_st *t1 = NULL; | |
1698 | struct state_token_st *t2 = NULL; | |
1699 | ||
1700 | type->kind = TYPE_LANG_STRUCT; | |
1701 | read_state_common_type_content (type); | |
1702 | t0 = peek_state_token (0); | |
1703 | if (state_token_kind (t0) == STOK_STRING) | |
1704 | { | |
1705 | if (state_token_is_name (t0, "nil")) | |
1706 | { | |
1707 | DBGPRINTF ("read anonymous lang_struct type @%p #%d", | |
1708 | (void *) type, type->state_number); | |
1709 | type->u.s.tag = NULL; | |
1710 | } | |
1711 | else | |
1712 | { | |
1713 | type->u.s.tag = xstrdup (t0->stok_un.stok_string); | |
1714 | DBGPRINTF ("read lang_struct type @%p #%d '%s'", | |
1715 | (void *) type, type->state_number, type->u.s.tag); | |
1716 | } | |
1717 | next_state_tokens (1); | |
1718 | } | |
1719 | else | |
1720 | fatal_reading_state (t0, "Bad tag in lang struct type"); | |
1721 | read_state_fileloc (&(type->u.s.line)); | |
1722 | read_state_fields (&(type->u.s.fields)); | |
1723 | read_state_options (&(type->u.s.opt)); | |
1724 | read_state_lang_bitmap (&(type->u.s.bitmap)); | |
1725 | /* Within lang_struct-ures, the lang_struct field is a linked list | |
1726 | of homonymous types! */ | |
1727 | t0 = peek_state_token (0); | |
1728 | t1 = peek_state_token (1); | |
1729 | t2 = peek_state_token (2); | |
1730 | /* Parse (!homotypes <number-types> <type-1> .... <type-n>) */ | |
1731 | if (state_token_kind (t0) == STOK_LEFTPAR | |
1732 | && state_token_is_name (t1, "!homotypes") | |
1733 | && state_token_kind (t2) == STOK_INTEGER) | |
1734 | { | |
1735 | type_p *prevty = &type->u.s.lang_struct; | |
1736 | int nbhomotype = t2->stok_un.stok_num; | |
1737 | int i = 0; | |
1738 | t0 = t1 = t2 = NULL; | |
1739 | next_state_tokens (3); | |
1740 | for (i = 0; i < nbhomotype; i++) | |
1741 | { | |
1742 | read_state_type (prevty); | |
1743 | t0 = peek_state_token (0); | |
1744 | if (*prevty) | |
1745 | prevty = &(*prevty)->next; | |
1746 | else | |
1747 | fatal_reading_state (t0, | |
1748 | "expecting type in homotype list for lang_struct"); | |
1749 | }; | |
1750 | if (state_token_kind (t0) != STOK_RIGHTPAR) | |
1751 | fatal_reading_state (t0, | |
1752 | "expecting ) in homotype list for lang_struct"); | |
1753 | next_state_tokens (1); | |
1754 | } | |
1755 | else | |
1756 | fatal_reading_state (t0, "expecting !homotypes for lang_struct"); | |
1757 | } | |
1758 | ||
1759 | ||
463ae493 | 1760 | /* Read the gc used information. */ |
1761 | static void | |
1762 | read_state_gc_used (enum gc_used_enum *pgus) | |
1763 | { | |
1764 | struct state_token_st *t0 = peek_state_token (0); | |
1765 | if (state_token_is_name (t0, "gc_unused")) | |
1766 | *pgus = GC_UNUSED; | |
1767 | else if (state_token_is_name (t0, "gc_used")) | |
1768 | *pgus = GC_USED; | |
1769 | else if (state_token_is_name (t0, "gc_maybe_pointed_to")) | |
1770 | *pgus = GC_MAYBE_POINTED_TO; | |
1771 | else if (state_token_is_name (t0, "gc_pointed_to")) | |
1772 | *pgus = GC_POINTED_TO; | |
1773 | else | |
1774 | fatal_reading_state (t0, "invalid gc_used information"); | |
1775 | next_state_tokens (1); | |
1776 | } | |
1777 | ||
1778 | ||
1779 | /* Utility function to read the common content of types. */ | |
1780 | static void | |
1781 | read_state_common_type_content (type_p current) | |
1782 | { | |
1783 | struct state_token_st *t0 = peek_state_token (0); | |
1784 | ||
1785 | if (state_token_kind (t0) == STOK_INTEGER) | |
1786 | { | |
1787 | current->state_number = t0->stok_un.stok_num; | |
1788 | next_state_tokens (1); | |
1789 | record_type (current); | |
1790 | } | |
1791 | else | |
1792 | fatal_reading_state_printf (t0, | |
1793 | "Expected integer for state_number line %d", | |
1794 | state_line); | |
1795 | /* We don't read the next field of the type. */ | |
1796 | read_state_type (¤t->pointer_to); | |
1797 | read_state_gc_used (¤t->gc_used); | |
1798 | } | |
1799 | ||
1800 | ||
1801 | /* Read a GTY-ed type. */ | |
1802 | void | |
1803 | read_state_type (type_p *current) | |
1804 | { | |
1805 | struct state_token_st *t0 = peek_state_token (0); | |
1806 | struct state_token_st *t1 = peek_state_token (1); | |
1807 | ||
1808 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
1809 | state_token_is_name (t1, "!type")) | |
1810 | { | |
1811 | next_state_tokens (2); | |
1812 | t0 = peek_state_token (0); | |
1813 | if (state_token_is_name (t0, "already_seen")) | |
1814 | { | |
1815 | next_state_tokens (1); | |
1816 | read_state_already_seen_type (current); | |
1817 | } | |
1818 | else | |
1819 | { | |
1820 | t0 = peek_state_token (0); | |
1821 | ||
1822 | if (state_token_is_name (t0, "scalar_nonchar")) | |
1823 | { | |
1824 | next_state_tokens (1); | |
1825 | read_state_scalar_nonchar_type (current); | |
1826 | } | |
1827 | else if (state_token_is_name (t0, "scalar_char")) | |
1828 | { | |
1829 | next_state_tokens (1); | |
1830 | read_state_scalar_char_type (current); | |
1831 | } | |
1832 | else if (state_token_is_name (t0, "string")) | |
1833 | { | |
1834 | next_state_tokens (1); | |
1835 | read_state_string_type (current); | |
1836 | } | |
f1f41a6c | 1837 | else if (state_token_is_name (t0, "undefined")) |
1838 | { | |
1839 | *current = XCNEW (struct type); | |
1840 | next_state_tokens (1); | |
1841 | read_state_undefined_type (*current); | |
1842 | } | |
463ae493 | 1843 | else if (state_token_is_name (t0, "struct")) |
1844 | { | |
1845 | *current = XCNEW (struct type); | |
1846 | next_state_tokens (1); | |
1847 | read_state_struct_type (*current); | |
1848 | } | |
1849 | else if (state_token_is_name (t0, "union")) | |
1850 | { | |
1851 | *current = XCNEW (struct type); | |
1852 | next_state_tokens (1); | |
1853 | read_state_union_type (*current); | |
1854 | } | |
1855 | else if (state_token_is_name (t0, "lang_struct")) | |
1856 | { | |
1857 | *current = XCNEW (struct type); | |
1858 | next_state_tokens (1); | |
1859 | read_state_lang_struct_type (*current); | |
1860 | } | |
463ae493 | 1861 | else if (state_token_is_name (t0, "pointer")) |
1862 | { | |
1863 | *current = XCNEW (struct type); | |
1864 | next_state_tokens (1); | |
1865 | read_state_pointer_type (*current); | |
1866 | } | |
1867 | else if (state_token_is_name (t0, "array")) | |
1868 | { | |
1869 | *current = XCNEW (struct type); | |
1870 | next_state_tokens (1); | |
1871 | read_state_array_type (*current); | |
1872 | } | |
2b15d2ba | 1873 | else if (state_token_is_name (t0, "user_struct")) |
1874 | { | |
1875 | *current = XCNEW (struct type); | |
1876 | next_state_tokens (1); | |
1877 | read_state_user_struct_type (*current); | |
1878 | } | |
463ae493 | 1879 | else |
1880 | fatal_reading_state (t0, "bad type in (!type"); | |
1881 | } | |
1882 | t0 = peek_state_token (0); | |
1883 | if (state_token_kind (t0) != STOK_RIGHTPAR) | |
1884 | fatal_reading_state (t0, "missing ) in type"); | |
1885 | next_state_tokens (1); | |
1886 | } | |
1887 | else if (state_token_is_name (t0, "nil")) | |
1888 | { | |
1889 | next_state_tokens (1); | |
1890 | *current = NULL; | |
1891 | } | |
1892 | else | |
1893 | fatal_reading_state (t0, "bad type syntax"); | |
1894 | } | |
1895 | ||
1896 | ||
1897 | /* Read a file location. Files within the source directory are dealt | |
1898 | with specifically. */ | |
1899 | void | |
1900 | read_state_fileloc (struct fileloc *floc) | |
1901 | { | |
1902 | bool issrcfile = false; | |
1903 | struct state_token_st *t0 = peek_state_token (0); | |
1904 | struct state_token_st *t1 = peek_state_token (1); | |
1905 | ||
1906 | gcc_assert (floc != NULL); | |
1907 | gcc_assert (srcdir != NULL); | |
1908 | ||
1909 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
1910 | (state_token_is_name (t1, "!fileloc") | |
1911 | || (issrcfile = state_token_is_name (t1, "!srcfileloc")))) | |
1912 | { | |
1913 | next_state_tokens (2); | |
1914 | t0 = peek_state_token (0); | |
1915 | t1 = peek_state_token (1); | |
1916 | if (state_token_kind (t0) == STOK_STRING && | |
1917 | state_token_kind (t1) == STOK_INTEGER) | |
1918 | { | |
1919 | char *path = t0->stok_un.stok_string; | |
1920 | if (issrcfile) | |
1921 | { | |
1922 | static const char dirsepstr[2] = { DIR_SEPARATOR, (char) 0 }; | |
1923 | char *fullpath = concat (srcdir, dirsepstr, path, NULL); | |
1924 | floc->file = input_file_by_name (fullpath); | |
1925 | free (fullpath); | |
1926 | } | |
1927 | else | |
1928 | floc->file = input_file_by_name (path); | |
1929 | floc->line = t1->stok_un.stok_num; | |
1930 | next_state_tokens (2); | |
1931 | } | |
1932 | else | |
1933 | fatal_reading_state (t0, | |
1934 | "Bad fileloc syntax, expected path string and line"); | |
1935 | t0 = peek_state_token (0); | |
1936 | if (state_token_kind (t0) != STOK_RIGHTPAR) | |
1937 | fatal_reading_state (t0, "Bad fileloc syntax, expected )"); | |
1938 | next_state_tokens (1); | |
1939 | } | |
1940 | else if (state_token_is_name (t0, "nil")) | |
1941 | { | |
1942 | next_state_tokens (1); | |
1943 | floc->file = NULL; | |
1944 | floc->line = 0; | |
1945 | } | |
1946 | else | |
1947 | fatal_reading_state (t0, "Bad fileloc syntax"); | |
1948 | } | |
1949 | ||
1950 | ||
1951 | /* Read the fields of a GTY-ed type. */ | |
1952 | void | |
1953 | read_state_fields (pair_p *fields) | |
1954 | { | |
1955 | pair_p tmp = NULL; | |
1956 | struct state_token_st *t0 = peek_state_token (0); | |
1957 | struct state_token_st *t1 = peek_state_token (1); | |
1958 | struct state_token_st *t2 = peek_state_token (2); | |
1959 | ||
1960 | if (state_token_kind (t0) == STOK_LEFTPAR | |
1961 | && state_token_is_name (t1, "!fields") | |
1962 | && state_token_kind (t2) == STOK_INTEGER) | |
1963 | { | |
1964 | int nbfields = t2->stok_un.stok_num; | |
1965 | int nbpairs = 0; | |
1966 | next_state_tokens (3); | |
1967 | nbpairs = read_state_pair_list (&tmp); | |
1968 | t0 = peek_state_token (0); | |
1969 | if (nbpairs != nbfields) | |
1970 | fatal_reading_state_printf | |
1971 | (t0, | |
1972 | "Mismatched fields number, expected %d got %d", nbpairs, nbfields); | |
1973 | if (state_token_kind (t0) == STOK_RIGHTPAR) | |
1974 | next_state_tokens (1); | |
1975 | else | |
1976 | fatal_reading_state (t0, "Bad fields expecting )"); | |
1977 | } | |
1978 | ||
1979 | *fields = tmp; | |
1980 | } | |
1981 | ||
1982 | ||
1983 | /* Read a string option. */ | |
1984 | static void | |
1985 | read_state_string_option (options_p opt) | |
1986 | { | |
1987 | struct state_token_st *t0 = peek_state_token (0); | |
1988 | opt->kind = OPTION_STRING; | |
1989 | if (state_token_kind (t0) == STOK_STRING) | |
1990 | { | |
1991 | opt->info.string = xstrdup (t0->stok_un.stok_string); | |
1992 | next_state_tokens (1); | |
1993 | } | |
1994 | else if (state_token_is_name (t0, "nil")) | |
1995 | { | |
1996 | opt->info.string = NULL; | |
1997 | next_state_tokens (1); | |
1998 | } | |
1999 | else | |
2000 | fatal_reading_state (t0, "Missing name in string option"); | |
2001 | } | |
2002 | ||
2003 | ||
2004 | /* Read a type option. */ | |
2005 | static void | |
2006 | read_state_type_option (options_p opt) | |
2007 | { | |
2008 | opt->kind = OPTION_TYPE; | |
2009 | read_state_type (&(opt->info.type)); | |
2010 | } | |
2011 | ||
2012 | ||
2013 | /* Read a nested option. */ | |
2014 | static void | |
2015 | read_state_nested_option (options_p opt) | |
2016 | { | |
2017 | struct state_token_st *t0; | |
2018 | ||
2019 | opt->info.nested = XCNEW (struct nested_ptr_data); | |
2020 | opt->kind = OPTION_NESTED; | |
2021 | read_state_type (&(opt->info.nested->type)); | |
2022 | t0 = peek_state_token (0); | |
2023 | if (state_token_kind (t0) == STOK_STRING) | |
2024 | { | |
2025 | opt->info.nested->convert_from = xstrdup (t0->stok_un.stok_string); | |
2026 | next_state_tokens (1); | |
2027 | } | |
2028 | else if (state_token_is_name (t0, "nil")) | |
2029 | { | |
2030 | opt->info.nested->convert_from = NULL; | |
2031 | next_state_tokens (1); | |
2032 | } | |
2033 | else | |
2034 | fatal_reading_state (t0, "Bad nested convert_from option"); | |
2035 | ||
2036 | t0 = peek_state_token (0); | |
2037 | if (state_token_kind (t0) == STOK_STRING) | |
2038 | { | |
2039 | opt->info.nested->convert_to = xstrdup (t0->stok_un.stok_string); | |
2040 | next_state_tokens (1); | |
2041 | } | |
2042 | else if (state_token_is_name (t0, "nil")) | |
2043 | { | |
2044 | opt->info.nested->convert_to = NULL; | |
2045 | next_state_tokens (1); | |
2046 | } | |
2047 | else | |
2048 | fatal_reading_state (t0, "Bad nested convert_from option"); | |
2049 | } | |
2050 | ||
2051 | ||
2052 | /* Read an GTY option. */ | |
2053 | static void | |
2054 | read_state_option (options_p *opt) | |
2055 | { | |
2056 | struct state_token_st *t0 = peek_state_token (0); | |
2057 | struct state_token_st *t1 = peek_state_token (1); | |
2058 | ||
2059 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
2060 | state_token_is_name (t1, "!option")) | |
2061 | { | |
2062 | next_state_tokens (2); | |
2063 | t0 = peek_state_token (0); | |
2064 | if (state_token_kind (t0) == STOK_NAME) | |
2065 | { | |
2066 | *opt = XCNEW (struct options); | |
2067 | if (state_token_is_name (t0, "nil")) | |
2068 | (*opt)->name = NULL; | |
2069 | else | |
2070 | (*opt)->name = t0->stok_un.stok_ident->stid_name; | |
2071 | next_state_tokens (1); | |
2072 | t0 = peek_state_token (0); | |
2073 | if (state_token_kind (t0) == STOK_NAME) | |
2074 | { | |
2075 | if (state_token_is_name (t0, "string")) | |
2076 | { | |
2077 | next_state_tokens (1); | |
2078 | read_state_string_option (*opt); | |
2079 | } | |
2080 | else if (state_token_is_name (t0, "type")) | |
2081 | { | |
2082 | next_state_tokens (1); | |
2083 | read_state_type_option (*opt); | |
2084 | } | |
2085 | else if (state_token_is_name (t0, "nested")) | |
2086 | { | |
2087 | next_state_tokens (1); | |
2088 | read_state_nested_option (*opt); | |
2089 | } | |
2090 | else | |
2091 | fatal_reading_state (t0, "Bad option type"); | |
2092 | t0 = peek_state_token (0); | |
2093 | if (state_token_kind (t0) != STOK_RIGHTPAR) | |
2094 | fatal_reading_state (t0, "Bad syntax in option, expecting )"); | |
2095 | ||
2096 | next_state_tokens (1); | |
2097 | } | |
2098 | else | |
2099 | fatal_reading_state (t0, "Missing option type"); | |
2100 | } | |
2101 | else | |
2102 | fatal_reading_state (t0, "Bad name for option"); | |
2103 | } | |
2104 | else | |
2105 | fatal_reading_state (t0, "Bad option, waiting for )"); | |
2106 | } | |
2107 | ||
2108 | /* Read a list of options. */ | |
2109 | void | |
2110 | read_state_options (options_p *opt) | |
2111 | { | |
2112 | options_p head = NULL; | |
2113 | options_p previous = NULL; | |
2114 | options_p current_option = NULL; | |
2115 | struct state_token_st *t0 = peek_state_token (0); | |
2116 | struct state_token_st *t1 = peek_state_token (1); | |
2117 | ||
2118 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
2119 | state_token_is_name (t1, "!options")) | |
2120 | { | |
2121 | next_state_tokens (2); | |
2122 | t0 = peek_state_token (0); | |
2123 | while (state_token_kind (t0) != STOK_RIGHTPAR) | |
2124 | { | |
2125 | read_state_option (¤t_option); | |
2126 | if (head == NULL) | |
2127 | { | |
2128 | head = current_option; | |
2129 | previous = head; | |
2130 | } | |
2131 | else | |
2132 | { | |
2133 | previous->next = current_option; | |
2134 | previous = current_option; | |
2135 | } | |
2136 | t0 = peek_state_token (0); | |
2137 | } | |
2138 | next_state_tokens (1); | |
2139 | } | |
2140 | else if (state_token_is_name (t0, "nil")) | |
2141 | { | |
2142 | next_state_tokens (1); | |
2143 | } | |
2144 | else | |
2145 | fatal_reading_state (t0, "Bad options syntax"); | |
2146 | ||
2147 | *opt = head; | |
2148 | } | |
2149 | ||
2150 | ||
2151 | /* Read a version, and check against the version of the gengtype. */ | |
2152 | static void | |
2153 | read_state_version (const char *version_string) | |
2154 | { | |
2155 | struct state_token_st *t0 = peek_state_token (0); | |
2156 | struct state_token_st *t1 = peek_state_token (1); | |
2157 | ||
2158 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
2159 | state_token_is_name (t1, "!version")) | |
2160 | { | |
2161 | next_state_tokens (2); | |
2162 | t0 = peek_state_token (0); | |
2163 | t1 = peek_state_token (1); | |
2164 | if (state_token_kind (t0) == STOK_STRING && | |
2165 | state_token_kind (t1) == STOK_RIGHTPAR) | |
2166 | { | |
2167 | /* Check that the read version string is the same as current | |
2168 | version. */ | |
2169 | if (strcmp (version_string, t0->stok_un.stok_string)) | |
2170 | fatal_reading_state_printf (t0, | |
2171 | "version string mismatch; expecting %s but got %s", | |
2172 | version_string, | |
2173 | t0->stok_un.stok_string); | |
2174 | next_state_tokens (2); | |
2175 | } | |
2176 | else | |
2177 | fatal_reading_state (t0, "Missing version or right parenthesis"); | |
2178 | } | |
2179 | else | |
2180 | fatal_reading_state (t0, "Bad version syntax"); | |
2181 | } | |
2182 | ||
2183 | ||
2184 | /* Read a pair. */ | |
2185 | void | |
2186 | read_state_pair (pair_p *current) | |
2187 | { | |
2188 | struct state_token_st *t0 = peek_state_token (0); | |
2189 | struct state_token_st *t1 = peek_state_token (1); | |
2190 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
2191 | state_token_is_name (t1, "!pair")) | |
2192 | { | |
2193 | *current = XCNEW (struct pair); | |
2194 | next_state_tokens (2); | |
2195 | t0 = peek_state_token (0); | |
2196 | if (state_token_kind (t0) == STOK_STRING) | |
2197 | { | |
2198 | if (strcmp (t0->stok_un.stok_string, "nil") == 0) | |
2199 | { | |
2200 | (*current)->name = NULL; | |
2201 | } | |
2202 | else | |
2203 | { | |
2204 | (*current)->name = xstrdup (t0->stok_un.stok_string); | |
2205 | } | |
2206 | next_state_tokens (1); | |
2207 | read_state_type (&((*current)->type)); | |
2208 | read_state_fileloc (&((*current)->line)); | |
7f38a6aa | 2209 | read_state_options (&((*current)->opt)); |
463ae493 | 2210 | t0 = peek_state_token (0); |
2211 | if (state_token_kind (t0) == STOK_RIGHTPAR) | |
2212 | { | |
2213 | next_state_tokens (1); | |
2214 | } | |
2215 | else | |
2216 | { | |
2217 | fatal_reading_state (t0, "Bad syntax for pair, )"); | |
2218 | } | |
2219 | } | |
2220 | else | |
2221 | { | |
2222 | fatal_reading_state (t0, "Bad name for pair"); | |
2223 | } | |
2224 | } | |
2225 | else if (state_token_kind (t0) == STOK_NAME && | |
2226 | state_token_is_name (t0, "nil")) | |
2227 | { | |
2228 | next_state_tokens (1); | |
2229 | *current = NULL; | |
2230 | } | |
2231 | else | |
2232 | fatal_reading_state_printf (t0, "Bad syntax for pair, (!pair %d", | |
2233 | state_token->stok_kind); | |
2234 | } | |
2235 | ||
2236 | ||
2237 | /* Return the number of pairs actually read. */ | |
2238 | int | |
2239 | read_state_pair_list (pair_p *list) | |
2240 | { | |
2241 | int nbpair = 0; | |
2242 | pair_p head = NULL; | |
2243 | pair_p previous = NULL; | |
2244 | pair_p tmp = NULL; | |
2245 | struct state_token_st *t0 = peek_state_token (0); | |
2246 | while (t0 && state_token_kind (t0) != STOK_RIGHTPAR) | |
2247 | { | |
2248 | read_state_pair (&tmp); | |
2249 | if (head == NULL) | |
2250 | { | |
2251 | head = tmp; | |
2252 | previous = head; | |
2253 | } | |
2254 | else | |
2255 | { | |
2256 | previous->next = tmp; | |
2257 | previous = tmp; | |
2258 | } | |
2259 | t0 = peek_state_token (0); | |
2260 | nbpair++; | |
2261 | } | |
2262 | ||
2263 | /* don't consume the ); the caller will eat it. */ | |
2264 | *list = head; | |
2265 | return nbpair; | |
2266 | } | |
2267 | ||
2268 | /* Read the typedefs. */ | |
2269 | static void | |
2270 | read_state_typedefs (pair_p *typedefs) | |
2271 | { | |
2272 | int nbtypedefs = 0; | |
2273 | pair_p list = NULL; | |
2274 | struct state_token_st *t0 = peek_state_token (0); | |
2275 | struct state_token_st *t1 = peek_state_token (1); | |
2276 | struct state_token_st *t2 = peek_state_token (2); | |
2277 | ||
2278 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2279 | && state_token_is_name (t1, "!typedefs") | |
2280 | && state_token_kind (t2) == STOK_INTEGER) | |
2281 | { | |
2282 | int nbpairs = 0; | |
2283 | nbtypedefs = t2->stok_un.stok_num; | |
2284 | next_state_tokens (3); | |
2285 | nbpairs = read_state_pair_list (&list); | |
2286 | t0 = peek_state_token (0); | |
2287 | if (nbpairs != nbtypedefs) | |
2288 | fatal_reading_state_printf | |
2289 | (t0, | |
2290 | "invalid number of typedefs, expected %d but got %d", | |
2291 | nbtypedefs, nbpairs); | |
2292 | if (state_token_kind (t0) == STOK_RIGHTPAR) | |
2293 | next_state_tokens (1); | |
2294 | else | |
2295 | fatal_reading_state (t0, "Bad typedefs syntax )"); | |
2296 | } | |
2297 | else | |
2298 | fatal_reading_state (t0, "Bad typedefs syntax (!typedefs"); | |
2299 | ||
2300 | if (verbosity_level >= 2) | |
2301 | printf ("%s read %d typedefs from state\n", progname, nbtypedefs); | |
2302 | *typedefs = list; | |
2303 | } | |
2304 | ||
2305 | ||
2306 | /* Read the structures. */ | |
2307 | static void | |
2308 | read_state_structures (type_p *structures) | |
2309 | { | |
2310 | type_p head = NULL; | |
79031933 | 2311 | type_p previous = NULL; |
463ae493 | 2312 | type_p tmp; |
2313 | int nbstruct = 0, countstruct = 0; | |
2314 | struct state_token_st *t0 = peek_state_token (0); | |
2315 | struct state_token_st *t1 = peek_state_token (1); | |
2316 | struct state_token_st *t2 = peek_state_token (2); | |
2317 | ||
2318 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2319 | && state_token_is_name (t1, "!structures") | |
2320 | && state_token_kind (t2) == STOK_INTEGER) | |
2321 | { | |
2322 | nbstruct = t2->stok_un.stok_num; | |
2323 | next_state_tokens (3); | |
2324 | t0 = peek_state_token (0); | |
2325 | while (t0 && state_token_kind (t0) != STOK_RIGHTPAR) | |
2326 | { | |
2327 | tmp = NULL; | |
2328 | read_state_type (&tmp); | |
2329 | countstruct++; | |
2330 | if (head == NULL) | |
2331 | { | |
2332 | head = tmp; | |
2333 | previous = head; | |
2334 | } | |
2335 | else | |
2336 | { | |
2337 | previous->next = tmp; | |
2338 | previous = tmp; | |
2339 | } | |
2340 | t0 = peek_state_token (0); | |
2341 | } | |
2342 | next_state_tokens (1); | |
2343 | } | |
2344 | else | |
2345 | fatal_reading_state (t0, "Bad structures syntax"); | |
2346 | if (countstruct != nbstruct) | |
2347 | fatal_reading_state_printf (NULL_STATE_TOKEN, | |
2348 | "expected %d structures but got %d", | |
2349 | nbstruct, countstruct); | |
2350 | if (verbosity_level >= 2) | |
2351 | printf ("%s read %d structures from state\n", progname, nbstruct); | |
2352 | *structures = head; | |
2353 | } | |
2354 | ||
2355 | ||
463ae493 | 2356 | /* Read the variables. */ |
2357 | static void | |
2358 | read_state_variables (pair_p *variables) | |
2359 | { | |
2360 | pair_p list = NULL; | |
2361 | int nbvars = 0; | |
2362 | struct state_token_st *t0 = peek_state_token (0); | |
2363 | struct state_token_st *t1 = peek_state_token (1); | |
2364 | struct state_token_st *t2 = peek_state_token (2); | |
2365 | ||
2366 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2367 | && state_token_is_name (t1, "!variables") | |
2368 | && state_token_kind (t2) == STOK_INTEGER) | |
2369 | { | |
2370 | int nbpairs = 0; | |
2371 | nbvars = t2->stok_un.stok_num; | |
2372 | next_state_tokens (3); | |
2373 | nbpairs = read_state_pair_list (&list); | |
2374 | t0 = peek_state_token (0); | |
2375 | if (nbpairs != nbvars) | |
2376 | fatal_reading_state_printf | |
2377 | (t0, "Invalid number of variables, expected %d but got %d", | |
2378 | nbvars, nbpairs); | |
2379 | if (state_token_kind (t0) == STOK_RIGHTPAR) | |
2380 | next_state_tokens (1); | |
2381 | else | |
2382 | fatal_reading_state (t0, "Waiting for ) in variables"); | |
2383 | } | |
2384 | else | |
2385 | fatal_reading_state (t0, "Bad variables syntax"); | |
2386 | *variables = list; | |
2387 | if (verbosity_level >= 2) | |
2388 | printf ("%s read %d variables from state\n", progname, nbvars); | |
2389 | } | |
2390 | ||
2391 | ||
2392 | /* Read the source directory. */ | |
2393 | static void | |
2394 | read_state_srcdir (void) | |
2395 | { | |
2396 | struct state_token_st *t0 = peek_state_token (0); | |
2397 | struct state_token_st *t1 = peek_state_token (1); | |
2398 | if (state_token_kind (t0) == STOK_LEFTPAR && | |
2399 | state_token_is_name (t1, "!srcdir")) | |
2400 | { | |
2401 | next_state_tokens (2); | |
2402 | t0 = peek_state_token (0); | |
2403 | t1 = peek_state_token (1); | |
2404 | if (state_token_kind (t0) == STOK_STRING && | |
2405 | state_token_kind (t1) == STOK_RIGHTPAR) | |
2406 | { | |
2407 | srcdir = xstrdup (t0->stok_un.stok_string); | |
2408 | srcdir_len = strlen (srcdir); | |
2409 | next_state_tokens (2); | |
2410 | return; | |
2411 | } | |
2412 | } | |
2413 | ||
2414 | fatal_reading_state (t0, "Bad srcdir in state_file"); | |
2415 | } | |
2416 | ||
2417 | ||
2418 | /* Read the sequence of GCC front-end languages. */ | |
2419 | static void | |
2420 | read_state_languages (void) | |
2421 | { | |
2422 | struct state_token_st *t0 = peek_state_token (0); | |
2423 | struct state_token_st *t1 = peek_state_token (1); | |
2424 | struct state_token_st *t2 = peek_state_token (2); | |
2425 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2426 | && state_token_is_name (t1, "!languages") | |
2427 | && state_token_kind (t2) == STOK_INTEGER) | |
2428 | { | |
2429 | int i = 0; | |
2430 | num_lang_dirs = t2->stok_un.stok_num; | |
2431 | lang_dir_names = XCNEWVEC (const char *, num_lang_dirs); | |
2432 | next_state_tokens (3); | |
2433 | t0 = t1 = t2 = NULL; | |
2434 | for (i = 0; i < (int) num_lang_dirs; i++) | |
2435 | { | |
2436 | t0 = peek_state_token (0); | |
2437 | if (state_token_kind (t0) != STOK_NAME) | |
2438 | fatal_reading_state (t0, "expecting language name in state file"); | |
2439 | lang_dir_names[i] = t0->stok_un.stok_ident->stid_name; | |
2440 | next_state_tokens (1); | |
2441 | } | |
2442 | t0 = peek_state_token (0); | |
2443 | if (state_token_kind (t0) != STOK_RIGHTPAR) | |
2444 | fatal_reading_state (t0, "missing ) in languages list of state file"); | |
2445 | next_state_tokens (1); | |
2446 | } | |
2447 | else | |
2448 | fatal_reading_state (t0, "expecting languages list in state file"); | |
2449 | ||
2450 | } | |
2451 | ||
2452 | /* Read the sequence of files. */ | |
2453 | static void | |
2454 | read_state_files_list (void) | |
2455 | { | |
2456 | struct state_token_st *t0 = peek_state_token (0); | |
2457 | struct state_token_st *t1 = peek_state_token (1); | |
2458 | struct state_token_st *t2 = peek_state_token (2); | |
2459 | ||
2460 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2461 | && state_token_is_name (t1, "!fileslist") | |
2462 | && state_token_kind (t2) == STOK_INTEGER) | |
2463 | { | |
2464 | int i = 0; | |
2465 | num_gt_files = t2->stok_un.stok_num; | |
2466 | next_state_tokens (3); | |
2467 | t0 = t1 = t2 = NULL; | |
2468 | gt_files = XCNEWVEC (const input_file *, num_gt_files); | |
2469 | for (i = 0; i < (int) num_gt_files; i++) | |
2470 | { | |
2471 | bool issrcfile = FALSE; | |
2472 | t0 = t1 = t2 = NULL; | |
2473 | t0 = peek_state_token (0); | |
2474 | t1 = peek_state_token (1); | |
2475 | t2 = peek_state_token (2); | |
2476 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2477 | && (state_token_is_name (t1, "!file") | |
2478 | || (issrcfile = state_token_is_name (t1, "!srcfile"))) | |
2479 | && state_token_kind (t2) == STOK_INTEGER) | |
2480 | { | |
2481 | lang_bitmap bmap = t2->stok_un.stok_num; | |
2482 | next_state_tokens (3); | |
2483 | t0 = t1 = t2 = NULL; | |
2484 | t0 = peek_state_token (0); | |
2485 | t1 = peek_state_token (1); | |
2486 | if (state_token_kind (t0) == STOK_STRING | |
2487 | && state_token_kind (t1) == STOK_RIGHTPAR) | |
2488 | { | |
2489 | const char *fnam = t0->stok_un.stok_string; | |
2490 | /* Allocate & fill a gt_file entry with space for the lang_bitmap before! */ | |
2491 | input_file *curgt = NULL; | |
2492 | if (issrcfile) | |
2493 | { | |
2494 | static const char dirsepstr[2] = | |
2495 | { DIR_SEPARATOR, (char) 0 }; | |
2496 | char *fullpath = concat (srcdir, dirsepstr, fnam, NULL); | |
2497 | curgt = input_file_by_name (fullpath); | |
2498 | free (fullpath); | |
2499 | } | |
2500 | else | |
2501 | curgt = input_file_by_name (fnam); | |
2502 | set_lang_bitmap (curgt, bmap); | |
2503 | gt_files[i] = curgt; | |
2504 | next_state_tokens (2); | |
2505 | } | |
2506 | else | |
2507 | fatal_reading_state (t0, | |
2508 | "bad file in !fileslist of state file"); | |
2509 | } | |
2510 | else | |
2511 | fatal_reading_state (t0, | |
2512 | "expecting file in !fileslist of state file"); | |
2513 | }; | |
2514 | t0 = peek_state_token (0); | |
60141df0 | 2515 | if (state_token_kind (t0) != STOK_RIGHTPAR) |
463ae493 | 2516 | fatal_reading_state (t0, "missing ) for !fileslist in state file"); |
2517 | next_state_tokens (1); | |
2518 | } | |
2519 | else | |
2520 | fatal_reading_state (t0, "missing !fileslist in state file"); | |
2521 | } | |
2522 | ||
2523 | ||
2524 | /* Read the trailer. */ | |
2525 | static void | |
2526 | read_state_trailer (void) | |
2527 | { | |
2528 | struct state_token_st *t0 = peek_state_token (0); | |
2529 | struct state_token_st *t1 = peek_state_token (1); | |
2530 | struct state_token_st *t2 = peek_state_token (2); | |
2531 | ||
2532 | if (state_token_kind (t0) == STOK_LEFTPAR | |
2533 | && state_token_is_name (t1, "!endfile") | |
2534 | && state_token_kind (t2) == STOK_RIGHTPAR) | |
2535 | next_state_tokens (3); | |
2536 | else | |
2537 | fatal_reading_state (t0, "missing !endfile in state file"); | |
2538 | } | |
2539 | ||
2540 | ||
2541 | /* Utility functions for the state_seen_types hash table. */ | |
2542 | static unsigned | |
2543 | hash_type_number (const void *ty) | |
2544 | { | |
2545 | const struct type *type = (const struct type *) ty; | |
2546 | ||
2547 | return type->state_number; | |
2548 | } | |
2549 | ||
2550 | static int | |
2551 | equals_type_number (const void *ty1, const void *ty2) | |
2552 | { | |
2553 | const struct type *type1 = (const struct type *) ty1; | |
2554 | const struct type *type2 = (const struct type *) ty2; | |
2555 | ||
2556 | return type1->state_number == type2->state_number; | |
2557 | } | |
2558 | ||
465d0f82 | 2559 | static int |
2560 | string_eq (const void *a, const void *b) | |
2561 | { | |
2562 | const char *a0 = (const char *)a; | |
2563 | const char *b0 = (const char *)b; | |
2564 | ||
2565 | return (strcmp (a0, b0) == 0); | |
2566 | } | |
2567 | ||
463ae493 | 2568 | |
2569 | /* The function reading the state, called by main from gengtype.c. */ | |
2570 | void | |
2571 | read_state (const char *path) | |
2572 | { | |
2573 | state_file = fopen (path, "r"); | |
2574 | if (state_file == NULL) | |
2575 | fatal ("Failed to open state file %s for reading [%s]", path, | |
2576 | xstrerror (errno)); | |
2577 | state_path = path; | |
2578 | state_line = 1; | |
2579 | ||
2580 | if (verbosity_level >= 1) | |
2581 | { | |
2582 | printf ("%s reading state file %s;", progname, state_path); | |
2583 | if (verbosity_level >= 2) | |
2584 | putchar ('\n'); | |
2585 | fflush (stdout); | |
2586 | } | |
2587 | ||
2588 | state_seen_types = | |
2589 | htab_create (2017, hash_type_number, equals_type_number, NULL); | |
2590 | state_ident_tab = | |
465d0f82 | 2591 | htab_create (4027, htab_hash_string, string_eq, NULL); |
463ae493 | 2592 | read_state_version (version_string); |
2593 | read_state_srcdir (); | |
2594 | read_state_languages (); | |
2595 | read_state_files_list (); | |
2596 | read_state_structures (&structures); | |
2597 | if (ferror (state_file)) | |
2598 | fatal_reading_state_printf | |
2599 | (NULL_STATE_TOKEN, "input error while reading state [%s]", | |
2600 | xstrerror (errno)); | |
2601 | read_state_typedefs (&typedefs); | |
463ae493 | 2602 | read_state_variables (&variables); |
2603 | read_state_trailer (); | |
2604 | ||
2605 | if (verbosity_level >= 1) | |
2606 | { | |
2607 | printf ("%s read %ld bytes.\n", progname, ftell (state_file)); | |
2608 | fflush (stdout); | |
2609 | }; | |
2610 | ||
2611 | if (fclose (state_file)) | |
2612 | fatal ("failed to close read state file %s [%s]", | |
2613 | path, xstrerror (errno)); | |
2614 | state_file = NULL; | |
2615 | state_path = NULL; | |
2616 | } | |
2617 | ||
2618 | /* End of file gengtype-state.c. */ |