2 ** Splint - annotation-assisted static program checker
3 ** Copyright (C) 1994-2002 University of Virginia,
4 ** Massachusetts Institute of Technology
6 ** This program is free software; you can redistribute it and/or modify it
7 ** under the terms of the GNU General Public License as published by the
8 ** Free Software Foundation; either version 2 of the License, or (at your
9 ** option) any later version.
11 ** This program is distributed in the hope that it will be useful, but
12 ** WITHOUT ANY WARRANTY; without even the implied warranty of
13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 ** General Public License for more details.
16 ** The GNU General Public License is available from http://www.gnu.org/ or
17 ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 ** MA 02111-1307, USA.
20 ** For information on splint: splint@cs.virginia.edu
21 ** To report a bug: splint-bug@cs.virginia.edu
22 ** For more information: http://www.splint.org
28 Copyright (C) 1986, 87, 89, 92-6, 1997 Free Software Foundation, Inc.
29 Contributed by Per Bothner, 1994-95.
30 Based on CCCP program by Paul Rubin, June 1986
31 Adapted to ANSI C, Richard Stallman, Jan 1987
33 This program is free software; you can redistribute it and/or modify it
34 under the terms of the GNU General Public License as published by the
35 Free Software Foundation; either version 2, or (at your option) any
38 This program is distributed in the hope that it will be useful,
39 but WITHOUT ANY WARRANTY; without even the implied warranty of
40 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 GNU General Public License for more details.
43 You should have received a copy of the GNU General Public License
44 along with this program; if not, write to the Free Software
45 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
47 In other words, you are welcome to use, share and improve this program.
48 You are forbidden to forbid anyone else to use, share and improve
49 what you give them. Help stamp out software-hoarding! */
53 * - OS2 drive specs like WIN32
54 * - Includes for IBMs OS/2 compiler
66 # if !(defined (WIN32) || defined (OS2) && defined (__IBMC__))
70 # include <sys/types.h>
71 # include <sys/stat.h>
74 # if defined (WIN32) || defined (OS2) && defined (__IBMC__)
76 # include <sys/utime.h> /* for __DATE__ and __TIME__ */
81 # include <time.h> /* Reported by Paul Smith */
82 # include <sys/time.h>
83 # include <sys/resource.h>
85 # include <sys/times.h>
90 # endif /* not WIN32 */
92 /* This defines "errno" properly for VMS, and gives us EACCES. */
95 # include "splintMacros.nf"
99 # include "cpperror.h"
100 # include "cpphash.h"
102 # include "version.h"
107 ** This is really kludgey code...
113 #define NO_SHORTNAMES
121 /*@constant int IMPORT_FOUND@*/
122 # define IMPORT_FOUND -2
124 /*@constant int SKIP_INCLUDE@*/
125 # define SKIP_INCLUDE IMPORT_FOUND
127 /*@constant unused int IMPORT_NOT_FOUND@*/
128 # define IMPORT_NOT_FOUND -1
131 /*@constant unused int STDC_VALUE@*/
135 /* By default, colon separates directories in a path. */
136 #ifndef PATH_SEPARATOR
137 /*@constant char PATH_SEPARATOR@*/
138 #define PATH_SEPARATOR ':'
141 static void parse_name (cppReader *, int);
143 static int cpp_openIncludeFile (char *p_filename)
144 /*@modifies fileSystem @*/ ;
146 static void cpp_setLocation (cppReader *p_pfile)
147 /*@modifies g_currentloc@*/ ;
149 static enum cpp_token cpp_handleComment (cppReader *p_pfile,
150 struct parse_marker *p_smark)
151 /*@modifies p_pfile, p_smark@*/;
153 static bool cpp_shouldCheckMacro (cppReader *p_pfile, char *p_p) /*@modifies p_p@*/ ;
155 static int cppReader_checkMacroNameLoc (fileloc p_loc,
159 static bool cpp_skipIncludeFile (cstring p_fname) /*@*/ ;
165 /* Symbols to predefine. */
167 #ifdef CPP_PREDEFINES
168 static /*@observer@*/ char *predefs = CPP_PREDEFINES;
170 static /*@observer@*/ char *predefs = "";
173 /* We let tm.h override the types used here, to handle trivial differences
174 such as the choice of unsigned int or long unsigned int for size_t.
175 When machines start needing nontrivial differences in the size type,
176 it would be best to do something here to figure out automatically
177 from other information what type to use. */
179 /* The string value for __SIZE_TYPE__. */
182 /*@constant observer char *SIZE_TYPE@*/
183 #define SIZE_TYPE "long unsigned int"
186 /* The string value for __PTRDIFF_TYPE__. */
189 /*@constant observer char *PTRDIFF_TYPE@*/
190 #define PTRDIFF_TYPE "long int"
193 /* The string value for __WCHAR_TYPE__. */
196 /*@constant observer char *WCHAR_TYPE@*/
197 #define WCHAR_TYPE "int"
200 /* The string value for __USER_LABEL_PREFIX__ */
202 #ifndef USER_LABEL_PREFIX
203 /*@constant observer char *USER_LABEL_PREFIX@*/
204 #define USER_LABEL_PREFIX ""
207 /* The string value for __REGISTER_PREFIX__ */
209 #ifndef REGISTER_PREFIX
210 /*@constant observer char *REGISTER_PREFIX@*/
211 #define REGISTER_PREFIX ""
214 /* table to tell if char can be part of a C identifier. */
215 static bool is_idchar[256];
216 /* table to tell if char can be first char of a c identifier. */
217 static bool is_idstart[256];
218 /* table to tell if c is horizontal space. */
219 static bool is_hor_space[256];
220 /* table to tell if c is horizontal or vertical space. */
221 static bool is_space[256];
223 static /*@exposed@*/ /*@null@*/ cppBuffer *
224 cppReader_getBuffer (/*@special@*/ cppReader *p_pfile)
225 /*@uses p_pfile->buffer@*/
226 /*@modifies nothing@*/ ;
229 # define SKIP_WHITE_SPACE(p) do { /*@access cstring@*/ while (is_hor_space[(int) *(p)]) { (p)++; } } /*@noaccess cstring@*/ while (0)
232 # define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*(p)]) { (p)++; } } while (0)
234 static int cpp_peekN (cppReader *p_pfile, int p_n) /*@*/ ;
236 /*@function static int cppBuffer_get (sef cppBuffer *p_b) modifies *p_b ; @*/
237 # define cppBuffer_get(BUFFER) \
238 ((BUFFER)->cur < (BUFFER)->rlimit ? *(BUFFER)->cur++ : EOF)
240 /* Append string STR (of length N) to PFILE's output buffer. Make space. */
241 /*@function static void cppReader_puts (sef cppReader *p_file, char *p_str, sef size_t p_n)
242 modifies *p_file; @*/
243 # define cppReader_puts(PFILE, STR, N) \
244 cpplib_reserve(PFILE, N), cppReader_putStrN (PFILE, STR,N)
246 /* Append character CH to PFILE's output buffer. Assume sufficient space. */
248 /*@function static void cppReader_putCharQ (cppReader *p_file, char p_ch)
249 modifies *p_file; @*/
250 # define cppReader_putCharQ(PFILE, CH) (*(PFILE)->limit++ = (CH))
252 /* Append character CH to PFILE's output buffer. Make space if need be. */
254 /*@function static void cppReader_putChar (sef cppReader *p_file, char p_ch)
255 modifies *p_file; @*/
256 #define cppReader_putChar(PFILE, CH) (cpplib_reserve (PFILE, (size_t) 1), cppReader_putCharQ (PFILE, CH))
258 /* Make sure PFILE->limit is followed by '\0'. */
259 /*@function static void cppReader_nullTerminateQ (cppReader *p_file)
260 modifies *p_file; @*/
262 #define cppReader_nullTerminateQ(PFILE) (*(PFILE)->limit = 0)
264 /*@function static void cppReader_nullTerminate (sef cppReader *p_file)
265 modifies *p_file; @*/
266 # define cppReader_nullTerminate(PFILE) \
267 (cpplib_reserve (PFILE, (size_t) 1), *(PFILE)->limit = 0)
269 /*@function static void cppReader_adjustWritten (cppReader *p_file, size_t)
270 modifies *p_file; @*/
271 #define cppReader_adjustWritten(PFILE,DELTA) ((PFILE)->limit += (DELTA))
273 /*@function static bool cppReader_isC89 (cppReader *) modifies nothing; @*/
274 #define cppReader_isC89(PFILE) (CPPOPTIONS(PFILE)->c89)
276 /*@function static observer char *cppReader_wcharType (cppReader *)
277 modifies nothing; @*/
279 # define cppReader_wcharType(PFILE) \
280 (CPPOPTIONS (PFILE)->cplusplus ? "__wchar_t" : WCHAR_TYPE)
282 static void cppBuffer_forward (cppBuffer *p_buf, int p_n) /*@modifies *p_buf@*/ ;
284 /*@function static void cppReader_forward (cppReader *p_pfile, int) modifies *p_pfile; @*/
285 # define cppReader_forward(pfile, N) \
286 (cppBuffer_forward (cppReader_getBufferSafe (pfile), (N)))
288 /*@function static int cppReader_getC (cppReader *p_pfile) modifies *p_pfile; @*/
289 # define cppReader_getC(pfile) (cppBuffer_get (cppReader_getBufferSafe (pfile)))
291 /*@function static int cppReader_peekC (cppReader *) modifies nothing;@*/
292 # define cppReader_peekC(pfile) (cpplib_bufPeek (cppReader_getBufferSafe (pfile)))
294 /* Move all backslash-newline pairs out of embarrassing places.
295 Exchange all such pairs following BP
296 with any potentially-embarrassing characters that follow them.
297 Potentially-embarrassing characters are / and *
298 (because a backslash-newline inside a comment delimiter
299 would cause it not to be recognized). */
302 # define NEWLINE_FIX \
303 do { while (cppReader_peekC (pfile) == '\\' && cpp_peekN (pfile, 1) == '\n') { cppReader_forward (pfile, 2); } } while(FALSE)
305 /* Same, but assume we've already read the potential '\\' into C. */
307 # define NEWLINE_FIX1(C) do { \
308 while ((C) == '\\' && cppReader_peekC (pfile) == '\n') { cppReader_forward (pfile, 1); (C) = cppReader_getC (pfile); }\
311 static void parseSetMark (/*@out@*/ struct parse_marker *,
313 static void parseClearMark (struct parse_marker *);
314 static void parseGotoMark (struct parse_marker *, cppReader *);
315 static void parseMoveMark (struct parse_marker *, cppReader *);
317 /* If we have a huge buffer, may need to cache more recent counts */
318 static /*@exposed@*/ char *cppLineBase (/*@sef@*/ cppBuffer *);
320 static /*@exposed@*/ /*@null@*/ cppBuffer *
321 cppReader_pushBuffer (cppReader *p_pfile,
322 /*@owned@*/ /*@null@*/ char *, size_t)
323 /*@modifies p_pfile@*/ ;
325 static void cppReader_appendIncludeChain
327 /*@keep@*/ struct file_name_list *p_first,
328 /*@dependent@*/ struct file_name_list *p_last);
330 static void cppReader_macroCleanup (cppBuffer *p_pbuf, cppReader *p_pfile);
331 static enum cpp_token cppReader_nullUnderflow (/*@unused@*/ cppReader *p_pfile);
333 static void cppReader_nullCleanup (/*@unused@*/ cppBuffer *p_pbuf,
334 /*@unused@*/ cppReader *p_pfile);
336 static void cppReader_fileCleanup (cppBuffer *p_pbuf,
337 /*@unused@*/ cppReader *p_pfile);
339 static int cppReader_handleDirective (cppReader *p_pfile);
341 static void cppReader_scanBuffer (cppReader *p_pfile);
343 # if defined (WIN32) || defined (OS2) && defined (__IBMC__)
346 ** WIN32 (at least the VC++ include files) does not define mode_t.
349 /*@-incondefs@*/ /*@-czechtypes@*/
350 typedef unsigned int mode_t;
351 /*@=incondefs@*/ /*@=czechtypes@*/
355 static int file_size_and_mode (int p_fd, /*@out@*/ mode_t *p_mode_pointer,
356 /*@out@*/ size_t *p_size_pointer);
357 static int safe_read (int p_desc, /*@out@*/ char *p_ptr, int p_len);
361 ** cppBuffer_isMacro is true if the buffer contains macro expansion.
362 ** (Note that it is false while we're expanding marco *arguments*.)
365 static bool cppBuffer_isMacro (/*@null@*/ cppBuffer *) /*@*/ ;
367 static void path_include (cppReader *p_pfile, char *p_path)
368 /*@modifies p_pfile@*/ ;
370 static void initialize_builtins (cppReader *p_pfile)
371 /*@modifies p_pfile@*/ ;
373 static void initialize_char_syntax (struct cppOptions *p_opts) ;
375 static int /*@alt void@*/ finclude (cppReader *p_pfile, int p_f,
377 bool p_system_header_p,
378 /*@dependent@*/ /*@null@*/ struct file_name_list *p_dirptr);
380 static void validate_else (cppReader *p_pfile, cstring p_directive);
382 static void conditional_skip (cppReader *p_pfile, int p_skip,
383 enum node_type p_type,
384 /*@dependent@*/ /*@null@*/ char *p_control_macro);
386 static HOST_WIDE_INT eval_if_expression (cppReader *p_pfile,
390 static void skip_if_group (cppReader *p_pfile, int p_any);
392 static bool comp_def_part (bool p_first, char *p_beg1, int p_len1,
393 char *p_beg2, int p_len2, bool p_last);
396 extern void fancy_abort ();
399 static bool redundant_include_p (cppReader *p_pfile, /*@null@*/ cstring p_name);
400 static bool is_system_include (cppReader *p_pfile, cstring p_filename);
402 static /*@observer@*/ /*@null@*/ struct file_name_map *
403 read_name_map (cppReader *p_pfile, cstring p_dirname);
405 static cstring read_filename_string (int p_ch, /*:open:*/ FILE *p_f);
407 static int open_include_file (cppReader *p_pfile,
408 /*@owned@*/ cstring p_fname,
409 /*@null@*/ struct file_name_list *p_searchptr);
411 static void push_macro_expansion (cppReader *,
412 /*@owned@*/ char *, size_t,
413 /*@dependent@*/ hashNode);
415 /* Last arg to output_line_command. */
416 enum file_change_code {
417 same_file, enter_file, leave_file
420 /* `struct directive' defines one #-directive, including how to handle it. */
423 int length; /* Length of name */
424 /*@null@*/ int (*func)(); /* Function to handle directive */
425 /*@observer@*/ cstring name; /* Name of directive */
426 enum node_type type; /* Code which describes which directive. */
427 bool command_reads_line; /* One if rest of line is read by func. */
428 bool traditional_comments; /* Nonzero: keep comments if -traditional. */
429 bool pass_thru; /* Copy preprocessed directive to output file.*/
432 /* These functions are declared to return int instead of void since they
433 are going to be placed in a table and some old compilers have trouble with
434 pointers to functions returning void. */
436 static int do_define (cppReader *, /*@null@*/ struct directive *,
437 /*@exposed@*/ char *, char *);
438 static int do_defineAux (cppReader *, /*@null@*/ struct directive *,
439 /*@exposed@*/ char *, char *, bool);
441 static int do_line (cppReader *, /*@null@*/ struct directive *);
442 static int do_include (cppReader *, struct directive *, char *, char *);
443 static int do_undef (cppReader *, struct directive *, char *, char *);
444 static int do_error (cppReader *, struct directive *, char *, char *);
445 static int do_pragma (cppReader *, struct directive *, char *, char *);
446 static int do_ident (cppReader *, struct directive *, char *, char *);
447 static int do_if (cppReader *, struct directive *, char *, char *);
448 static int do_xifdef (cppReader *, struct directive *, char *, char *);
449 static int do_else (cppReader *, struct directive *, char *, char *);
450 static int do_elif (cppReader *, struct directive *, char *, char *);
451 static int do_endif (cppReader *, struct directive *, char *, char *);
452 static int do_warning (cppReader *, struct directive *, char *, char *);
454 /* If a buffer's dir field is SELF_DIR_DUMMY, it means the file was found
455 via the same directory as the file that #included it. */
457 /*@constant observer struct file_name_list *SELF_DIR_DUMMY@*/
458 #define SELF_DIR_DUMMY ((struct file_name_list *) (~0))
460 /* #include "file" looks in source file dir, then stack. */
461 /* #include <file> just looks in the stack. */
462 /* -I directories are added to the end, then the defaults are added. */
466 static struct default_include {
467 /*@dependent@*/ /*@observer@*/ cstring fname; /* The name of the directory. */
468 int cplusplus; /* Only look here if we're compiling C++. */
469 int cxx_aware; /* Includes in this directory don't need to
470 be wrapped in extern "C" when compiling
472 } include_defaults_array[]
474 /* This is the dir for fixincludes. Put it just before
475 the files that we fix. */
476 { GCC_INCLUDE_DIR, 0, 0 },
477 { GCC_INCLUDE_DIR2, 0, 0 },
478 { cstring_undefined, 0, 0 }
481 /*@noaccess cstring@*/
483 /* Here is the actual list of #-directives, most-often-used first.
484 The initialize_builtins function assumes #define is the very first. */
488 static struct directive directive_table[] = {
489 { 6, do_define, "define", T_DEFINE, FALSE, TRUE, FALSE },
490 { 5, do_xifdef, "ifdef", T_IFDEF, TRUE, FALSE, FALSE },
491 { 6, do_xifdef, "ifndef", T_IFNDEF, TRUE, FALSE, FALSE },
492 { 7, do_include, "include", T_INCLUDE, TRUE, FALSE, FALSE },
493 { 5, do_endif, "endif", T_ENDIF, TRUE, FALSE, FALSE },
494 { 4, do_else, "else", T_ELSE, TRUE, FALSE, FALSE },
495 { 2, do_if, "if", T_IF, TRUE, FALSE, FALSE },
496 { 4, do_elif, "elif", T_ELIF, TRUE, FALSE, FALSE },
497 { 5, do_undef, "undef", T_UNDEF, FALSE, FALSE, FALSE },
498 { 5, do_error, "error", T_ERROR, FALSE, FALSE, FALSE },
499 { 7, do_warning, "warning", T_WARNING, FALSE, FALSE, FALSE },
500 { 6, do_pragma, "pragma", T_PRAGMA, FALSE, FALSE, TRUE},
501 { 4, do_line, "line", T_LINE, TRUE, FALSE, FALSE },
502 { 5, do_ident, "ident", T_IDENT, TRUE, FALSE, TRUE },
503 /* { 8, do_unassert, "unassert", T_UNASSERT, TRUE, FALSE, FALSE }, */
504 { -1, NULL, "", T_UNUSED, FALSE, FALSE, FALSE },
506 /*@noaccess cstring@*/
508 static cstring searchPath_unparse (struct file_name_list *search_start)
510 cstring res = cstring_newEmpty ();
511 struct file_name_list *searchptr = NULL;
513 for (searchptr = search_start; searchptr != NULL;
514 searchptr = searchptr->next)
516 if (!cstring_isEmpty (searchptr->fname)) {
517 res = cstring_concatFree1 (res, searchptr->fname);
518 if (searchptr->next != NULL) {
519 res = cstring_appendChar (res, ';');
529 initialize_char_syntax (struct cppOptions *opts)
534 * Set up is_idchar and is_idstart tables. These should be
535 * faster than saying (is_alpha (c) || c == '_'), etc.
536 * Set up these things before calling any routines tthat
540 for (i = 'a'; i <= 'z'; i++) {
541 is_idchar[i - 'a' + 'A'] = TRUE;
542 is_idchar[(int) i] = TRUE;
543 is_idstart[i - 'a' + 'A'] = TRUE;
544 is_idstart[(int) i] = TRUE;
547 for (i = '0'; i <= '9'; i++)
549 is_idchar[(int) i] = TRUE;
552 is_idchar['_'] = TRUE;
553 is_idstart['_'] = TRUE;
554 is_idchar['$'] = opts->dollars_in_ident;
555 is_idstart['$'] = opts->dollars_in_ident;
557 /* horizontal space table */
558 is_hor_space[' '] = TRUE;
559 is_hor_space['\t'] = TRUE;
560 is_hor_space['\v'] = TRUE;
561 is_hor_space['\f'] = TRUE;
562 is_hor_space['\r'] = TRUE;
564 is_space[' '] = TRUE;
565 is_space['\t'] = TRUE;
566 is_space['\v'] = TRUE;
567 is_space['\f'] = TRUE;
568 is_space['\n'] = TRUE;
569 is_space['\r'] = TRUE;
572 bool isIdentifierChar (char c)
574 return is_idchar[(int) c];
577 /* Place into P_PFILE a quoted string representing the string SRC.
578 Caller must reserve enough space in pfile->token_buffer. */
581 quote_string (cppReader *pfile, char *src)
585 cppReader_putCharQ (pfile, '\"');
588 switch ((c = *src++))
592 cppReader_putCharQ (pfile, c);
595 sprintf (cpplib_getPWritten (pfile), "\\%03o",
597 cppReader_adjustWritten (pfile, (size_t) 4);
599 /*@switchbreak@*/ break;
603 cppReader_putCharQ (pfile, '\\');
604 cppReader_putCharQ (pfile, c);
605 /*@switchbreak@*/ break;
608 cppReader_putCharQ (pfile, '\"');
609 cppReader_nullTerminateQ (pfile);
615 /* Re-allocates PFILE->token_buffer so it will hold at least N more chars. */
618 cppReader_growBuffer (cppReader *pfile, size_t n)
620 size_t old_written = cpplib_getWritten (pfile);
621 pfile->token_buffer_size = n + 2 * pfile->token_buffer_size;
622 pfile->token_buffer = (char *)
623 drealloc (pfile->token_buffer, pfile->token_buffer_size);
624 cppReader_setWritten (pfile, old_written);
628 * process a given definition string, for initialization
629 * If STR is just an identifier, define it with value 1.
630 * If STR has anything after the identifier, then it should
631 * be identifier=definition.
635 cppReader_define (cppReader *pfile, char *str)
640 DPRINTF (("Cpp reader define: %s", str));
642 if (!is_idstart[(int) *p])
644 DPRINTF (("ERROR 1"));
645 cppReader_error (pfile,
646 message ("Malformed option `-D%s'",
647 cstring_fromChars (str)));
654 DPRINTF (("Here 2"));
656 while (is_idchar[(int) *p])
663 while (*p != ')' && *p != '\0') {
672 message ("Malformed option: -D%s (no closing parenthesis)",
673 cstring_fromChars (str)));
677 DPRINTF (("Here 2"));
681 buf = (char *) dmalloc (size_fromInt (p - str + 4));
682 strcpy ((char *) buf, str);
683 strcat ((char *) buf, " 1");
687 DPRINTF (("ERROR 2"));
688 cppReader_error (pfile,
689 message ("Malformed option: -D%s (expected '=', found '%c')",
690 cstring_fromChars (str),
697 /* Copy the entire option so we can modify it. */
698 DPRINTF (("Copying..."));
699 buf = (char *) dmalloc (2 * strlen (str) + 1);
700 strncpy (buf, str, size_fromInt (p - str));
702 /* Change the = to a space. */
704 /* Scan for any backslash-newline and remove it. */
710 if (*p == '\\' && p[1] == '\n')
716 DPRINTF (("Here we are..."));
720 llassert (buf != NULL);
721 DPRINTF (("Do define: %s / %ld", buf, size_toLong (strlen (buf))));
722 (void) do_define (pfile, NULL, buf, buf + strlen (buf));
726 /* Append a chain of `struct file_name_list's
727 to the end of the main include chain.
728 FIRST is gthe beginning of the chain to append, and LAST is the end. */
731 cppReader_appendIncludeChain (cppReader *pfile,
732 struct file_name_list *first,
733 struct file_name_list *last)
735 struct cppOptions *opts = CPPOPTIONS (pfile);
736 struct file_name_list *dir;
738 if (first == NULL || last == NULL)
743 if (opts->include == 0)
745 opts->include = first;
749 llassert (opts->last_include->next == NULL);
750 opts->last_include->next = first;
753 if (opts->first_bracket_include == 0)
755 opts->first_bracket_include = first;
757 for (dir = first; ; dir = dir->next) {
758 int len = cstring_length (dir->fname) + INCLUDE_LEN_FUDGE;
759 if (len > pfile->max_include_len)
760 pfile->max_include_len = len;
766 llassert (last->next == NULL);
767 /* last->next = NULL; */
768 opts->last_include = last;
772 static /*@unused@*/ void
773 cppReader_showIncludeChain (cppReader *pfile)
775 struct file_name_list *dirs = CPPOPTIONS (pfile)->include;
781 fprintf (stderr, "*%s*:", cstring_toCharsSafe (dirs->fname));
785 fprintf (stderr, "\n");
789 fprintf (stderr, "No includes\n");
795 cppReader_getIncludePath ()
797 cppReader *pfile = &g_cppState;
798 struct file_name_list *dirs = CPPOPTIONS (pfile)->include;
799 cstring res = cstring_undefined;
805 res = message ("%q%c%s", res, PATH_SEPARATOR, dirs->fname);
811 res = cstring_makeLiteral ("<no include path>");
818 cppReader_addIncludeChain (cppReader *pfile, struct file_name_list *dir)
820 struct cppOptions *opts = CPPOPTIONS (pfile);
827 if (opts->include == 0)
833 llassert (opts->last_include->next == NULL);
834 opts->last_include->next = dir;
837 if (opts->first_bracket_include == 0)
839 int len = cstring_length (dir->fname) + INCLUDE_LEN_FUDGE;
840 opts->first_bracket_include = dir;
841 if (len > pfile->max_include_len)
843 pfile->max_include_len = len;
848 opts->last_include = dir;
849 /* cppReader_showIncludeChain (pfile); */
852 /* Given a colon-separated list of file names PATH,
853 add all the names to the search path for include files. */
856 path_include (cppReader *pfile, char *path)
863 /* if we have a posix path list, convert to win32 path list */
864 win32temp = (char *) dmalloc /*@i4@*/
865 (cygwin32_posix_to_win32_path_list_buf_size (path));
866 cygwin32_posix_to_win32_path_list (path, win32temp);
876 struct file_name_list *dirtmp;
878 /* Find the end of this name. */
879 while (*q != '\0' && *q != PATH_SEPARATOR)
886 /* An empty name in the path stands for the current directory. */
887 name = (char *) dmalloc ((size_t) 2);
893 /* Otherwise use the directory that is named. */
894 name = (char *) dmalloc (size_fromInt (q - p + 1));
895 memcpy (name, p, size_fromInt (q - p));
899 dirtmp = (struct file_name_list *) dmalloc (sizeof (*dirtmp));
900 dirtmp->next = 0; /* New one goes on the end */
901 dirtmp->control_macro = 0;
902 dirtmp->c_system_include_path = 0;
903 dirtmp->fname = cstring_fromChars (name);
904 dirtmp->got_name_map = 0;
905 cppReader_addIncludeChain (pfile, dirtmp);
907 /* Advance past this name. */
911 /* Skip the colon. */
917 cppOptions_init (cppOptions *opts)
919 memset ((char *) opts, 0, sizeof *opts);
922 opts->in_fname = NULL;
923 opts->out_fname = NULL;
925 /* Initialize is_idchar to allow $. */
926 opts->dollars_in_ident = TRUE;
928 opts->no_line_commands = 0;
929 opts->no_trigraphs = TRUE;
930 opts->put_out_comments = 1;
931 opts->print_include_names = 0;
932 opts->dump_macros = DUMP_DEFINITIONS; /* DUMP_NONE; */
936 opts->cplusplus_comments = 1;
941 opts->pedantic_errors = 0;
942 opts->warn_comments = 0;
943 opts->warnings_are_errors = 0;
945 initialize_char_syntax (opts);
949 cppReader_nullUnderflow (/*@unused@*/ cppReader *pfile)
955 cppReader_nullCleanup (/*@unused@*/ cppBuffer *pbuf,
956 /*@unused@*/ cppReader *pfile)
962 cppReader_macroCleanup (cppBuffer *pbuf, /*@unused@*/ cppReader *pfile)
964 hashNode macro = pbuf->hnode;
966 if (macro->type == T_DISABLED)
968 macro->type = T_MACRO;
971 if (macro->type != T_MACRO || pbuf->buf != macro->value.defn->expansion)
979 cppReader_fileCleanup (cppBuffer *pbuf, /*@unused@*/ cppReader *pfile)
981 if (pbuf->buf != NULL)
988 /* Assuming we have read '/'.
989 If this is the start of a comment (followed by '*' or '/'),
990 skip to the end of the comment, and return ' '.
991 Return EOF if we reached the end of file before the end of the comment.
992 If not the start of a comment, return '/'. */
995 skip_comment (cppReader *pfile, /*@null@*/ long *linep)
999 llassert (pfile->buffer != NULL);
1000 llassert (pfile->buffer->cur != NULL);
1002 while (cppReader_peekC (pfile) == '\\' && cpp_peekN (pfile, 1) == '\n')
1009 cppReader_forward (pfile, 2);
1012 if (cppReader_peekC (pfile) == '*')
1014 cppReader_forward (pfile, 1);
1019 c = cppReader_getC (pfile);
1026 while (c == (int) '\\' && cppReader_peekC (pfile) == (int) '\n')
1033 cppReader_forward (pfile, 1), c = cppReader_getC (pfile);
1036 if (prev_c == (int) '*' && c == (int) '/')
1041 if (c == (int) '\n' && (linep != NULL))
1047 else if (cppReader_peekC (pfile) == '/'
1048 && CPPOPTIONS (pfile)->cplusplus_comments)
1051 (void) cppoptgenerror
1052 (FLG_SLASHSLASHCOMMENT,
1053 message ("C++ style // comment"
1057 cppReader_forward (pfile, 1);
1061 c = cppReader_getC (pfile);
1065 /* Allow hash comment to be terminated by EOF. */
1069 while (c == (int) '\\' && cppReader_peekC (pfile) == '\n')
1071 cppReader_forward (pfile, 1);
1072 c = cppReader_getC (pfile);
1080 if (c == (int) '\n')
1082 /* Don't consider final '\n' to be part of comment. */
1083 cppReader_forward (pfile, -1);
1094 /* Skip whitespace \-newline and comments. Does not macro-expand. */
1096 cppSkipHspace (cppReader *pfile)
1104 llassert (pfile->buffer != NULL);
1106 c = cppReader_peekC (pfile);
1110 return 0; /* FIXME */
1113 if (is_hor_space[c])
1115 if ((c == '\f' || c == '\v') && cppReader_isPedantic (pfile))
1116 cppReader_pedwarn (pfile,
1117 message ("%s in preprocessing directive",
1119 ? cstring_makeLiteralTemp ("formfeed")
1120 : cstring_makeLiteralTemp ("vertical tab")));
1123 cppReader_forward (pfile, 1);
1127 cppReader_forward (pfile, 1);
1128 c = skip_comment (pfile, NULL);
1132 cppReader_forward (pfile, -1);
1135 if (c == EOF || c == '/')
1140 else if (c == '\\' && cpp_peekN (pfile, 1) == '\n')
1142 cppReader_forward (pfile, 2);
1144 else if (c == '@' && CPPBUFFER (pfile)->has_escapes
1145 && is_hor_space [cpp_peekN (pfile, 1)])
1147 cppReader_forward (pfile, 2);
1156 /* Read the rest of the current line.
1157 The line is appended to PFILE's output buffer. */
1160 copy_rest_of_line (cppReader *pfile)
1162 struct cppOptions *opts = CPPOPTIONS (pfile);
1169 llassert (pfile->buffer != NULL);
1171 c = cppReader_getC (pfile);
1177 if (cppReader_peekC (pfile) == '\n')
1179 cppReader_forward (pfile, 1);
1183 /*@fallthrough@*/ case '\'': case '\"':
1184 goto scan_directive_token;
1187 nextc = cppReader_peekC (pfile);
1190 ** was (opts->cplusplus_comments && nextc == '*')
1195 || (opts->cplusplus_comments && nextc == '/'))
1197 goto scan_directive_token;
1199 /*@switchbreak@*/ break;
1202 if (cppReader_isPedantic (pfile))
1203 cppReader_pedwarn (pfile,
1204 message ("%s in preprocessing directive",
1206 ? cstring_makeLiteralTemp ("formfeed")
1207 : cstring_makeLiteralTemp ("vertical tab")));
1208 /*@switchbreak@*/ break;
1211 cppReader_forward (pfile, -1);
1213 scan_directive_token:
1214 cppReader_forward (pfile, -1);
1215 (void) cpplib_getToken (pfile);
1218 cppReader_putChar (pfile, c);
1221 cppReader_nullTerminate (pfile);
1225 cppReader_skipRestOfLine (cppReader *pfile)
1227 size_t old = cpplib_getWritten (pfile);
1228 copy_rest_of_line (pfile);
1229 cppReader_setWritten (pfile, old);
1232 /* Handle a possible # directive.
1233 '#' has already been read. */
1236 cppReader_handleDirective (cppReader *pfile)
1239 struct directive *kt = NULL;
1241 size_t after_ident = 0;
1243 char *line_end = NULL;
1244 size_t old_written = cpplib_getWritten (pfile);
1245 int nspaces = cppSkipHspace (pfile);
1247 c = cppReader_peekC (pfile);
1249 if (c >= '0' && c <= '9')
1251 /* Handle # followed by a line number. */
1252 if (cppReader_isPedantic (pfile))
1254 cppReader_pedwarnLit
1256 cstring_makeLiteralTemp ("`#' followed by integer"));
1259 (void) do_line (pfile, NULL);
1260 goto done_a_directive;
1264 /* Now find the directive name. */
1266 cppReader_putChar (pfile, '#');
1268 parse_name (pfile, cppReader_getC (pfile));
1270 llassert (pfile->token_buffer != NULL);
1271 ident = pfile->token_buffer + old_written + 1;
1273 ident_length = cpplib_getPWritten (pfile) - ident;
1275 if (ident_length == 0 && cppReader_peekC (pfile) == '\n')
1277 /* A line of just `#' becomes blank. */
1281 for (kt = directive_table; ; kt++)
1283 if (kt->length <= 0)
1285 return 0; /* goto not_a_directive; */
1288 if (kt->length == ident_length
1289 && (cstring_equalPrefix (kt->name, cstring_fromChars (ident))))
1295 if (kt->command_reads_line)
1301 /* Nonzero means do not delete comments within the directive.
1302 #define needs this when -traditional. */
1303 bool comments = 1; /*cppReader_isTraditional (pfile) && kt->traditional_comments; */
1304 int save_put_out_comments = CPPOPTIONS (pfile)->put_out_comments;
1305 CPPOPTIONS (pfile)->put_out_comments = comments;
1306 after_ident = cpplib_getWritten (pfile);
1307 copy_rest_of_line (pfile);
1308 CPPOPTIONS (pfile)->put_out_comments = save_put_out_comments;
1312 /* For #pragma and #define, we may want to pass through the directive.
1313 Other directives may create output, but we don't want the directive
1314 itself out, so we pop it now. For example #include may write a #line
1315 command (see comment in do_include), and conditionals may emit
1316 #failed ... #endfailed stuff. But note that popping the buffer
1317 means the parameters to kt->func may point after pfile->limit
1318 so these parameters are invalid as soon as something gets appended
1319 to the token_buffer. */
1321 line_end = cpplib_getPWritten (pfile);
1324 if (!kt->pass_thru && kt->type != T_DEFINE)
1326 cppReader_setWritten (pfile, old_written);
1329 llassert (pfile->token_buffer != NULL);
1331 /* was kt->pass_thru || */
1333 if (kt->type == T_DEFINE
1334 && cpp_shouldCheckMacro (pfile, pfile->token_buffer + old_written))
1336 char *p = pfile->token_buffer + old_written;
1339 ** Still need to record value for preprocessing, so
1340 ** #ifdef's, etc. using the value behave correctly.
1343 (void) do_defineAux (pfile, kt,
1344 pfile->token_buffer + after_ident,
1353 SKIP_WHITE_SPACE (p);
1355 llassert (*p == 'd');
1358 llassert (*p == 'e');
1361 llassert (*p == 'f');
1364 llassert (*p == 'i');
1367 llassert (*p == 'n');
1370 llassert (*p == 'e');
1373 ** This is way-bogus. We use the last char to record the number of
1374 ** spaces. Its too hard to get them back into the input stream.
1377 if (nspaces > 9) nspaces = 9;
1379 *p++ = '0' + nspaces;
1381 return 0; /* not_a_directive */
1383 else if (kt->pass_thru)
1385 /* Just leave the entire #define in the output stack. */
1386 return 0; /* not_a_directive */
1389 else if (kt->type == T_DEFINE
1390 && CPPOPTIONS (pfile)->dump_macros == DUMP_NAMES)
1392 char *p = pfile->token_buffer + old_written + 7; /* Skip "#define". */
1393 SKIP_WHITE_SPACE (p);
1395 while (is_idchar[(int) *p])
1401 cppReader_putChar (pfile, '\n');
1403 else if (kt->type == T_DEFINE)
1405 cppReader_setWritten (pfile, old_written);
1416 llassert (kt->func != NULL);
1417 (void) (kt->func) (pfile, kt, pfile->token_buffer + after_ident, line_end);
1422 /* Pass a directive through to the output file.
1423 BUF points to the contents of the directive, as a contiguous string.
1424 LIMIT points to the first character past the end of the directive.
1425 KEYWORD is the keyword-table entry for the directive. */
1428 pass_thru_directive (char *buf, char *limit,
1430 struct directive *keyword)
1432 int keyword_length = keyword->length;
1434 cpplib_reserve (pfile,
1435 size_fromInt (2 + keyword_length + (limit - buf)));
1436 cppReader_putCharQ (pfile, '#');
1437 /*@-observertrans@*/
1438 cppReader_putStrN (pfile, cstring_toCharsSafe (keyword->name),
1439 size_fromInt (keyword_length));
1440 /*:=observertrans@*/
1442 if (limit != buf && buf[0] != ' ')
1444 /* Was a bug, since reserve only used 1 + ... */
1445 cppReader_putCharQ (pfile, ' ');
1448 cppReader_putStrN (pfile, buf, size_fromInt (limit - buf));
1451 /* Read a replacement list for a macro with parameters.
1452 Build the DEFINITION structure.
1453 Reads characters of text starting at BUF until END.
1454 ARGLIST specifies the formal parameters to look for
1455 in the text of the definition; NARGS is the number of args
1456 in that list, or -1 for a macro name that wants no argument list.
1457 MACRONAME is the macro name itself (so we can avoid recursive expansion)
1458 and NAMELEN is its length in characters.
1460 Note that comments, backslash-newlines, and leading white space
1461 have already been deleted from the argument. */
1464 collect_expansion (cppReader *pfile, char *buf, char *limit,
1465 int nargs, /*@null@*/ struct arglist *arglist)
1468 char *p, *lastp, *exp_p;
1469 struct reflist *endpat = NULL;
1470 /* Pointer to first nonspace after last ## seen. */
1472 /* Pointer to first nonspace after last single-# seen. */
1473 char *stringify = 0;
1475 char expected_delimiter = '\0';
1478 /* Scan thru the replacement list, ignoring comments and quoted
1479 strings, picking up on the macro calls. It does a linear search
1480 thru the arg list on every potential symbol. Profiling might say
1481 that something smarter should happen. */
1486 /* Find the beginning of the trailing whitespace. */
1489 while (p < limit && is_space[(int) limit[-1]])
1494 /* Allocate space for the text in the macro definition.
1495 Leading and trailing whitespace chars need 2 bytes each.
1496 Each other input char may or may not need 1 byte,
1497 so this is an upper bound. The extra 5 are for invented
1498 leading and trailing newline-marker and final null. */
1499 maxsize = (sizeof (*defn) + (limit - p) + 5);
1501 /* Occurrences of '@' get doubled, so allocate extra space for them. */
1510 defn = (DEFINITION *) dmalloc (maxsize);
1511 defn->noExpand = FALSE;
1513 defn->pattern = NULL;
1514 defn->nargs = nargs;
1515 defn->predefined = NULL;
1517 exp_p = defn->expansion = (char *) defn + sizeof (*defn);
1520 defn->rest_args = NULL;
1521 defn->args.argnames = NULL;
1527 /* Add one initial space escape-marker to prevent accidental
1528 token-pasting (often removed by cpplib_macroExpand). */
1532 if (limit - p >= 2 && p[0] == '#' && p[1] == '#') {
1533 cppReader_errorLit (pfile,
1534 cstring_makeLiteralTemp ("`##' at start of macro definition"));
1538 /* Process the main body of the definition. */
1540 int skipped_arg = 0;
1541 register char c = *p++;
1545 if (!cppReader_isTraditional (pfile)) {
1549 if (expected_delimiter != '\0')
1551 if (c == expected_delimiter)
1552 expected_delimiter = '\0';
1556 expected_delimiter = c;
1558 /*@switchbreak@*/ break;
1561 if (p < limit && (expected_delimiter != '\0'))
1563 /* In a string, backslash goes through
1564 and makes next char ordinary. */
1567 /*@switchbreak@*/ break;
1570 /* An '@' in a string or character constant stands for itself,
1571 and does not need to be escaped. */
1572 if (expected_delimiter == '\0')
1577 /*@switchbreak@*/ break;
1580 /* # is ordinary inside a string. */
1581 if (expected_delimiter != '\0')
1583 /*@switchbreak@*/ break;
1586 if (p < limit && *p == '#') {
1587 /* ##: concatenate preceding and following tokens. */
1588 /* Take out the first #, discard preceding whitespace. */
1592 while (exp_p > lastp && is_hor_space[(int) exp_p[-1]])
1598 /* Skip the second #. */
1600 /* Discard following whitespace. */
1601 SKIP_WHITE_SPACE (p);
1605 cppReader_errorLit (pfile,
1606 cstring_makeLiteralTemp ("`##' at end of macro definition"));
1608 } else if (nargs >= 0) {
1609 /* Single #: stringify following argument ref.
1610 Don't leave the # in the expansion. */
1612 SKIP_WHITE_SPACE (p);
1613 if (p == limit || ! is_idstart[(int) *p]
1614 || (*p == 'L' && p + 1 < limit && (p[1] == '\'' || p[1] == '\"')))
1615 cppReader_errorLit (pfile,
1616 cstring_makeLiteralTemp ("`#' operator is not followed by a macro argument name"));
1623 /*@switchbreak@*/ break;
1626 /* In -traditional mode, recognize arguments inside strings and
1627 and character constants, and ignore special properties of #.
1628 Arguments inside strings are considered "stringified", but no
1629 extra quote marks are supplied. */
1633 if (expected_delimiter != '\0') {
1634 if (c == expected_delimiter)
1635 expected_delimiter = '\0';
1637 expected_delimiter = c;
1638 /*@switchbreak@*/ break;
1641 /* Backslash quotes delimiters and itself, but not macro args. */
1642 if (expected_delimiter != '\0' && p < limit
1643 && (*p == expected_delimiter || *p == '\\')) {
1647 /*@switchbreak@*/ break;
1650 if (expected_delimiter != '\0') /* No comments inside strings. */
1651 /*@switchbreak@*/ break;
1653 /* If we find a comment that wasn't removed by cppReader_handleDirective,
1654 this must be -traditional. So replace the comment with
1658 while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
1663 /*@switchbreak@*/ break;
1667 /* Handle the start of a symbol. */
1668 if (is_idchar[(int) c] && nargs > 0) {
1669 char *id_beg = p - 1;
1673 while (p != limit && is_idchar[(int) *p])
1678 id_len = p - id_beg;
1680 if (is_idstart[(int) c]
1681 && ! (id_len == 1 && c == 'L' && (*p == '\'' || *p == '\"'))) {
1682 register struct arglist *arg;
1684 for (arg = arglist; arg != NULL; arg = arg->next) {
1685 struct reflist *tpat;
1687 if (arg->name[0] == c
1688 && arg->length == id_len
1689 && strncmp (arg->name, id_beg, size_fromInt (id_len)) == 0) {
1692 if (expected_delimiter && CPPOPTIONS (pfile)->warn_stringify) {
1693 if (cppReader_isTraditional (pfile)) {
1694 cppReader_warning (pfile,
1695 message ("macro argument `%x' is stringified.",
1696 cstring_prefix (cstring_fromChars (arg->name), id_len)));
1698 cppReader_warning (pfile,
1699 message ("macro arg `%x' would be stringified with -traditional.",
1700 cstring_prefix (cstring_fromChars (arg->name), id_len)));
1703 /* If ANSI, don't actually substitute inside a string. */
1704 if (!cppReader_isTraditional (pfile) && expected_delimiter)
1705 /*@innerbreak@*/ break;
1706 /* make a pat node for this arg and append it to the end of
1708 tpat = (struct reflist *) dmalloc (sizeof (*tpat));
1710 tpat->raw_before = (concat == id_beg);
1711 tpat->raw_after = 0;
1712 tpat->rest_args = arg->rest_args;
1713 tpat->stringify = (cppReader_isTraditional (pfile)
1714 ? expected_delimiter != '\0'
1715 : stringify == id_beg);
1719 defn->pattern = tpat;
1723 endpat->next = tpat;
1725 } /*@=branchstate@*/ /* evs 2000 was =branchstate */
1729 tpat->argno = arg->argno;
1730 tpat->nchars = exp_p - lastp;
1734 SKIP_WHITE_SPACE (p1);
1736 if (p1 + 2 <= limit && p1[0] == '#' && p1[1] == '#')
1738 tpat->raw_after = 1;
1741 lastp = exp_p; /* place to start copying from next time */
1744 /*@innerbreak@*/ break;
1749 /* If this was not a macro arg, copy it into the expansion. */
1750 if (skipped_arg == 0) {
1751 register char *lim1 = p;
1759 if (stringify == id_beg)
1760 cppReader_errorLit (pfile,
1761 cstring_makeLiteralTemp ("`#' operator should be followed by a macro argument name"));
1766 if (!cppReader_isTraditional (pfile) && expected_delimiter == '\0')
1768 /* If ANSI, put in a "@ " marker to prevent token pasting.
1769 But not if "inside a string" (which in ANSI mode
1770 happens only for -D option). */
1777 defn->length = size_fromInt (exp_p - defn->expansion);
1779 /* Crash now if we overrun the allocated size. */
1780 if (defn->length + 1 > maxsize)
1782 llfatalbug (cstring_makeLiteral ("Maximum definition size exceeded."));
1790 ** Gasp...cut-and-pasted from above to deal with pfile (should replace throughout with this...)
1794 collect_expansionLoc (fileloc loc, char *buf, char *limit,
1795 int nargs, /*@null@*/ struct arglist *arglist)
1798 char *p, *lastp, *exp_p;
1799 struct reflist *endpat = NULL;
1800 /* Pointer to first nonspace after last ## seen. */
1802 /* Pointer to first nonspace after last single-# seen. */
1803 char *stringify = 0;
1805 char expected_delimiter = '\0';
1808 /* Scan thru the replacement list, ignoring comments and quoted
1809 strings, picking up on the macro calls. It does a linear search
1810 thru the arg list on every potential symbol. Profiling might say
1811 that something smarter should happen. */
1815 llfatalbug (message ("%q: Limit is less than initial buffer pointer",
1816 fileloc_unparse (loc)));
1819 /* Find the beginning of the trailing whitespace. */
1822 while (p < limit && is_space[(int) limit[-1]])
1827 /* Allocate space for the text in the macro definition.
1828 Leading and trailing whitespace chars need 2 bytes each.
1829 Each other input char may or may not need 1 byte,
1830 so this is an upper bound. The extra 5 are for invented
1831 leading and trailing newline-marker and final null. */
1832 maxsize = (sizeof (*defn) + (limit - p) + 5);
1834 /* Occurrences of '@' get doubled, so allocate extra space for them. */
1843 defn = (DEFINITION *) dmalloc (maxsize);
1844 defn->noExpand = FALSE;
1846 defn->pattern = NULL;
1847 defn->nargs = nargs;
1848 defn->predefined = NULL;
1850 exp_p = defn->expansion = (char *) defn + sizeof (*defn);
1853 defn->rest_args = NULL;
1854 defn->args.argnames = NULL;
1860 /* Add one initial space escape-marker to prevent accidental
1861 token-pasting (often removed by cpplib_macroExpand). */
1865 if (limit - p >= 2 && p[0] == '#' && p[1] == '#') {
1866 voptgenerror (FLG_PREPROC,
1867 cstring_makeLiteral ("Paste marker ## at start of macro definition"),
1872 /* Process the main body of the definition. */
1874 int skipped_arg = 0;
1875 register char c = *p++;
1879 if (TRUE) { /* !cppReader_isTraditional (pfile)) { */
1883 if (expected_delimiter != '\0')
1885 if (c == expected_delimiter)
1886 expected_delimiter = '\0';
1890 expected_delimiter = c;
1892 /*@switchbreak@*/ break;
1895 if (p < limit && (expected_delimiter != '\0'))
1897 /* In a string, backslash goes through
1898 and makes next char ordinary. */
1901 /*@switchbreak@*/ break;
1904 /* An '@' in a string or character constant stands for itself,
1905 and does not need to be escaped. */
1906 if (expected_delimiter == '\0')
1911 /*@switchbreak@*/ break;
1914 /* # is ordinary inside a string. */
1915 if (expected_delimiter != '\0')
1917 /*@switchbreak@*/ break;
1920 if (p < limit && *p == '#') {
1921 /* ##: concatenate preceding and following tokens. */
1922 /* Take out the first #, discard preceding whitespace. */
1926 while (exp_p > lastp && is_hor_space[(int) exp_p[-1]])
1932 /* Skip the second #. */
1934 /* Discard following whitespace. */
1935 SKIP_WHITE_SPACE (p);
1939 voptgenerror (FLG_PREPROC,
1940 cstring_makeLiteral ("`##' at end of macro definition"),
1943 } else if (nargs >= 0) {
1944 /* Single #: stringify following argument ref.
1945 Don't leave the # in the expansion. */
1947 SKIP_WHITE_SPACE (p);
1948 if (p == limit || ! is_idstart[(int) *p]
1949 || (*p == 'L' && p + 1 < limit && (p[1] == '\'' || p[1] == '\"')))
1953 cstring_makeLiteral ("`#' operator is not followed by a macro argument name"),
1962 /*@switchbreak@*/ break;
1965 /* In -traditional mode, recognize arguments inside strings and
1966 and character constants, and ignore special properties of #.
1967 Arguments inside strings are considered "stringified", but no
1968 extra quote marks are supplied. */
1972 if (expected_delimiter != '\0') {
1973 if (c == expected_delimiter)
1974 expected_delimiter = '\0';
1976 expected_delimiter = c;
1977 /*@switchbreak@*/ break;
1980 /* Backslash quotes delimiters and itself, but not macro args. */
1981 if (expected_delimiter != '\0' && p < limit
1982 && (*p == expected_delimiter || *p == '\\')) {
1986 /*@switchbreak@*/ break;
1989 if (expected_delimiter != '\0') /* No comments inside strings. */
1990 /*@switchbreak@*/ break;
1992 /* If we find a comment that wasn't removed by cppReader_handleDirective,
1993 this must be -traditional. So replace the comment with
1997 while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
2002 /*@switchbreak@*/ break;
2006 /* Handle the start of a symbol. */
2007 if (is_idchar[(int) c] && nargs > 0) {
2008 char *id_beg = p - 1;
2012 while (p != limit && is_idchar[(int) *p])
2017 id_len = p - id_beg;
2019 if (is_idstart[(int) c]
2020 && ! (id_len == 1 && c == 'L' && (*p == '\'' || *p == '\"'))) {
2021 register struct arglist *arg;
2023 for (arg = arglist; arg != NULL; arg = arg->next) {
2024 struct reflist *tpat;
2026 if (arg->name[0] == c
2027 && arg->length == id_len
2028 && strncmp (arg->name, id_beg, size_fromInt (id_len)) == 0) {
2031 if (expected_delimiter) { /* && CPPOPTIONS (pfile)->warn_stringify) { */
2032 if (FALSE) { /* cppReader_isTraditional (pfile)) { */
2033 voptgenerror (FLG_PREPROC,
2034 message ("macro argument `%x' is stringified.",
2035 cstring_prefix (cstring_fromChars (arg->name), id_len)),
2039 voptgenerror (FLG_PREPROC,
2040 message ("Macro arg `%x' would be stringified with -traditional.",
2041 cstring_prefix (cstring_fromChars (arg->name), id_len)),
2046 /* If ANSI, don't actually substitute inside a string. */
2047 if (TRUE /* !cppReader_isTraditional (pfile) */ && expected_delimiter)
2048 /*@innerbreak@*/ break;
2049 /* make a pat node for this arg and append it to the end of
2051 tpat = (struct reflist *) dmalloc (sizeof (*tpat));
2053 tpat->raw_before = (concat == id_beg);
2054 tpat->raw_after = 0;
2055 tpat->rest_args = arg->rest_args;
2056 tpat->stringify = (FALSE /* cppReader_isTraditional (pfile) */
2057 ? expected_delimiter != '\0'
2058 : stringify == id_beg);
2062 defn->pattern = tpat;
2066 endpat->next = tpat;
2068 } /*@=branchstate@*/ /* evs 2000 was =branchstate */
2072 tpat->argno = arg->argno;
2073 tpat->nchars = exp_p - lastp;
2077 SKIP_WHITE_SPACE (p1);
2079 if (p1 + 2 <= limit && p1[0] == '#' && p1[1] == '#')
2081 tpat->raw_after = 1;
2084 lastp = exp_p; /* place to start copying from next time */
2087 /*@innerbreak@*/ break;
2092 /* If this was not a macro arg, copy it into the expansion. */
2093 if (skipped_arg == 0) {
2094 register char *lim1 = p;
2102 if (stringify == id_beg)
2106 cstring_makeLiteral ("# operator should be followed by a macro argument name"),
2113 if (/*!cppReader_isTraditional (pfile) && */ expected_delimiter == '\0')
2115 /* If ANSI, put in a "@ " marker to prevent token pasting.
2116 But not if "inside a string" (which in ANSI mode
2117 happens only for -D option). */
2124 defn->length = size_fromInt (exp_p - defn->expansion);
2126 /* Crash now if we overrun the allocated size. */
2127 if (defn->length + 1 > maxsize)
2129 llfatalbug (cstring_makeLiteral ("Maximum definition size exceeded."));
2136 * special extension string that can be added to the last macro argument to
2137 * allow it to absorb the "rest" of the arguments when expanded. Ex:
2138 * #define wow(a, b...) process (b, a, b)
2139 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
2140 * { wow (one, two); } -> { process (two, one, two); }
2141 * if this "rest_arg" is used with the concat token '##' and if it is not
2142 * supplied then the token attached to with ## will not be outputted. Ex:
2143 * #define wow (a, b...) process (b ## , a, ## b)
2144 * { wow (1, 2); } -> { process (2, 1, 2); }
2145 * { wow (one); } -> { process (one); {
2148 /*@-readonlytrans@*/
2149 static char rest_extension[] = "...";
2150 /*:=readonlytrans@*/
2153 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
2155 /* Create a DEFINITION node from a #define directive. Arguments are
2156 as for do_define. */
2159 static /*@null@*/ macroDef
2160 create_definition (/*@exposed@*/ char *buf, char *limit,
2161 cppReader *pfile, bool predefinition,
2164 char *bp; /* temp ptr into input buffer */
2165 char *symname; /* remember where symbol name starts */
2166 int sym_length; /* and how long it is */
2167 int rest_args = 0; /* really int! */
2170 cstring file = (CPPBUFFER (pfile) != NULL)
2171 ? CPPBUFFER (pfile)->nominal_fname : cstring_makeLiteralTemp ("");
2173 int arglengths = 0; /* Accumulate lengths of arg names
2174 plus number of args. */
2178 DPRINTF (("Create definition: %s", buf));
2181 cppBuffer_lineAndColumn (CPPBUFFER (pfile), &line, &col);
2185 while (is_hor_space[(int) *bp])
2190 symname = bp; /* remember where it starts */
2192 sym_length = cppReader_checkMacroName (pfile, bp, cstring_makeLiteralTemp ("macro"));
2196 /* Lossage will occur if identifiers or control keywords are broken
2197 across lines using backslash. This is not the right place to take
2201 struct arglist *arg_ptrs = NULL;
2204 bp++; /* skip '(' */
2205 SKIP_WHITE_SPACE (bp);
2207 /* Loop over macro argument names. */
2210 struct arglist *temp = (struct arglist *) dmalloc (sizeof (*temp));
2212 temp->next = arg_ptrs;
2213 temp->argno = argno++;
2214 temp->rest_args = 0;
2220 cppReader_pedwarn (pfile,
2221 message ("another parameter follows `%s'",
2222 cstring_fromChars (rest_extension)));
2225 if (!is_idstart[(int) *bp])
2227 cppReader_pedwarnLit (pfile,
2228 cstring_makeLiteralTemp ("invalid character in macro parameter name"));
2231 /* Find the end of the arg name. */
2232 while (is_idchar[(int) *bp])
2235 /* do we have a "special" rest-args extension here? */
2236 if (limit - bp > size_toInt (REST_EXTENSION_LENGTH)
2237 && strncmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)
2240 temp->rest_args = 1;
2241 /*@innerbreak@*/ break;
2245 temp->length = bp - temp->name;
2249 bp += REST_EXTENSION_LENGTH;
2252 arglengths += temp->length + 2;
2253 SKIP_WHITE_SPACE (bp);
2255 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
2256 cppReader_errorLit (pfile,
2257 cstring_makeLiteralTemp ("Parameter list for #define is not parseable"));
2263 SKIP_WHITE_SPACE (bp);
2266 cppReader_errorLit (pfile,
2267 cstring_makeLiteralTemp ("unterminated parameter list in `#define'"));
2271 struct arglist *otemp;
2273 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
2275 if (temp->length == otemp->length &&
2276 strncmp (temp->name, otemp->name, size_fromInt (temp->length)) == 0) {
2277 cstring name = cstring_copyLength (temp->name, temp->length);
2278 cppReader_error (pfile,
2279 message ("duplicate argument name `%x' in `#define'", name));
2286 ++bp; /* skip paren */
2287 SKIP_WHITE_SPACE (bp);
2288 /* now everything from bp before limit is the definition. */
2289 defn = collect_expansion (pfile, bp, limit, argno, arg_ptrs);
2290 defn->rest_args = rest_args;
2292 /* Now set defn->args.argnames to the result of concatenating
2293 the argument names in reverse order
2294 with comma-space between them. */
2295 defn->args.argnames = (char *) dmalloc (size_fromInt (arglengths + 1));
2298 struct arglist *temp;
2300 for (temp = arg_ptrs; temp != NULL; temp = temp->next) {
2301 memcpy (&defn->args.argnames[i], temp->name, size_fromInt (temp->length));
2303 if (temp->next != 0) {
2304 defn->args.argnames[i++] = ',';
2305 defn->args.argnames[i++] = ' ';
2309 defn->args.argnames[i] = '\0';
2314 /* Simple expansion or empty definition. */
2318 if (is_hor_space[(int) *bp]) {
2320 SKIP_WHITE_SPACE (bp);
2323 case '!': case '\"': case '#': case '%': case '&': case '\'':
2324 case ')': case '*': case '+': case ',': case '-': case '.':
2325 case '/': case ':': case ';': case '<': case '=': case '>':
2326 case '?': case '[': case '\\': case ']': case '^': case '{':
2327 case '|': case '}': case '~':
2328 cppReader_warning (pfile,
2329 message ("Missing white space after #define %x",
2330 cstring_prefix (cstring_fromChars (symname),
2335 cppReader_pedwarn (pfile,
2336 message ("Missing white space after #define %x",
2337 cstring_prefix (cstring_fromChars (symname),
2343 /* now everything from bp before limit is the definition. */
2344 defn = collect_expansion (pfile, bp, limit, -1, NULL);
2345 defn->args.argnames = mstring_createEmpty ();
2348 defn->noExpand = noExpand;
2349 DPRINTF (("No expand: %d", noExpand));
2353 /* not: llassert (cstring_isUndefined (defn->file)); */
2356 /* OP is null if this is a predefinition */
2357 defn->predefined = predefinition;
2359 mdef.symnam = symname;
2360 mdef.symlen = sym_length;
2371 cpplib_createDefinition (cstring def,
2376 char *buf = cstring_toCharsSafe (def);
2377 char *limit = buf + cstring_length (def);
2378 char *bp; /* temp ptr into input buffer */
2379 char *symname; /* remember where symbol name starts */
2380 int sym_length; /* and how long it is */
2381 int rest_args = 0; /* really int! */
2382 int line = fileloc_lineno (loc);
2383 cstring file = fileloc_filename (loc);
2385 int arglengths = 0; /* Accumulate lengths of arg names
2386 plus number of args. */
2391 DPRINTF (("Creating definition: %s", buf));
2393 while (is_hor_space[(int) *bp])
2398 symname = bp; /* remember where it starts */
2400 sym_length = cppReader_checkMacroNameLoc (loc, symname, cstring_makeLiteralTemp ("macro"));
2402 DPRINTF (("length: %d", sym_length));
2406 DPRINTF (("Here: %s", bp));
2408 /* Lossage will occur if identifiers or control keywords are broken
2409 across lines using backslash. This is not the right place to take
2413 struct arglist *arg_ptrs = NULL;
2416 bp++; /* skip '(' */
2417 SKIP_WHITE_SPACE (bp);
2419 /* Loop over macro argument names. */
2422 struct arglist *temp = (struct arglist *) dmalloc (sizeof (*temp));
2424 temp->next = arg_ptrs;
2425 temp->argno = argno++;
2426 temp->rest_args = 0;
2432 voptgenerror (FLG_PREPROC,
2433 message ("Another parameter follows %s",
2434 cstring_fromChars (rest_extension)),
2438 if (!is_idstart[(int) *bp])
2440 voptgenerror (FLG_PREPROC,
2441 message ("Invalid character in macro parameter name: %c", *bp),
2445 /* Find the end of the arg name. */
2446 while (is_idchar[(int) *bp])
2449 /* do we have a "special" rest-args extension here? */
2450 if (limit - bp > size_toInt (REST_EXTENSION_LENGTH)
2451 && strncmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)
2454 temp->rest_args = 1;
2455 /*@innerbreak@*/ break;
2459 temp->length = bp - temp->name;
2463 bp += REST_EXTENSION_LENGTH;
2466 arglengths += temp->length + 2;
2467 SKIP_WHITE_SPACE (bp);
2469 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
2470 voptgenerror (FLG_PREPROC,
2471 cstring_makeLiteral ("Parameter list for #define is not parseable"),
2478 SKIP_WHITE_SPACE (bp);
2481 voptgenerror (FLG_PREPROC,
2482 cstring_makeLiteral ("Unterminated parameter list in #define'"),
2487 struct arglist *otemp;
2489 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
2491 if (temp->length == otemp->length &&
2492 strncmp (temp->name, otemp->name, size_fromInt (temp->length)) == 0) {
2493 cstring name = cstring_copyLength (temp->name, temp->length);
2495 voptgenerror (FLG_PREPROC,
2496 message ("Duplicate argument name in #define: %s", name),
2504 ++bp; /* skip paren */
2505 SKIP_WHITE_SPACE (bp);
2506 /* now everything from bp before limit is the definition. */
2507 defn = collect_expansionLoc (loc, bp, limit, argno, arg_ptrs);
2508 defn->rest_args = rest_args;
2510 /* Now set defn->args.argnames to the result of concatenating
2511 the argument names in reverse order
2512 with comma-space between them. */
2513 defn->args.argnames = (char *) dmalloc (size_fromInt (arglengths + 1));
2516 struct arglist *temp;
2518 for (temp = arg_ptrs; temp != NULL; temp = temp->next) {
2519 memcpy (&defn->args.argnames[i], temp->name, size_fromInt (temp->length));
2521 if (temp->next != 0) {
2522 defn->args.argnames[i++] = ',';
2523 defn->args.argnames[i++] = ' ';
2527 defn->args.argnames[i] = '\0';
2532 /* Simple expansion or empty definition. */
2536 if (is_hor_space[(int) *bp]) {
2538 SKIP_WHITE_SPACE (bp);
2541 case '!': case '\"': case '#': case '%': case '&': case '\'':
2542 case ')': case '*': case '+': case ',': case '-': case '.':
2543 case '/': case ':': case ';': case '<': case '=': case '>':
2544 case '?': case '[': case '\\': case ']': case '^': case '{':
2545 case '|': case '}': case '~':
2546 voptgenerror (FLG_PREPROC,
2547 message ("Missing white space after #define %x",
2548 cstring_prefix (cstring_fromChars (symname),
2554 voptgenerror (FLG_PREPROC,
2555 message ("Missing white space after #define %x",
2556 cstring_prefix (cstring_fromChars (symname),
2564 /* now everything from bp before limit is the definition. */
2565 llassert (limit > bp);
2566 defn = collect_expansionLoc (loc, bp, limit, -1, NULL);
2567 defn->args.argnames = mstring_createEmpty ();
2570 defn->noExpand = noExpand;
2571 DPRINTF (("No expand: %d", noExpand));
2575 /* not: llassert (cstring_isUndefined (defn->file)); */
2578 /* OP is null if this is a predefinition */
2579 defn->predefined = predefinition;
2582 mdef.symnam = symname;
2583 mdef.symlen = sym_length;
2593 /* Check a purported macro name SYMNAME, and yield its length.
2594 USAGE is the kind of name this is intended for. */
2596 int cppReader_checkMacroName (cppReader *pfile,
2603 for (p = symname; is_idchar[(int) *p]; p++)
2608 sym_length = size_fromInt (p - symname);
2611 || (sym_length == 1 && *symname == 'L' && (*p == '\'' || *p == '\"')))
2613 cppReader_error (pfile, message ("invalid %s name", usage));
2615 else if (!is_idstart[(int) *symname])
2617 char *msg = (char *) dmalloc (sym_length + 1);
2618 memcpy (msg, symname, sym_length);
2619 msg[sym_length] = '\0';
2620 cppReader_error (pfile, message ("invalid %s name `%s'", usage,
2621 cstring_fromChars (msg)));
2626 if ((strncmp (symname, "defined", 7) == 0) && sym_length == 7)
2628 cppReader_error (pfile, message ("invalid %s name `defined'", usage));
2632 return size_toInt (sym_length);
2637 ** Gasp...cut-and-pasted from above to deal with pfile (should replace throughout with this...)
2640 int cppReader_checkMacroNameLoc (fileloc loc,
2647 for (p = symname; is_idchar[(int) *p]; p++)
2652 sym_length = size_fromInt (p - symname);
2655 || (sym_length == 1 && *symname == 'L' && (*p == '\'' || *p == '\"')))
2657 voptgenerror (FLG_PREPROC, message ("Invalid %s name: %s", usage,
2658 cstring_fromChars (symname)), loc);
2660 else if (!is_idstart[(int) *symname])
2662 char *msg = (char *) dmalloc (sym_length + 1);
2663 memcpy (msg, symname, sym_length);
2664 msg[sym_length] = '\0';
2665 voptgenerror (FLG_PREPROC, message ("Invalid %s name: %s", usage,
2666 cstring_fromChars (msg)),
2672 if ((strncmp (symname, "defined", 7) == 0) && sym_length == 7)
2674 voptgenerror (FLG_PREPROC, message ("Invalid %s name: defined", usage), loc);
2678 return size_toInt (sym_length);
2681 /* Return zero if two DEFINITIONs are isomorphic. */
2684 compare_defs (DEFINITION *d1, DEFINITION *d2)
2686 register struct reflist *a1, *a2;
2687 register char *p1 = d1->expansion;
2688 register char *p2 = d2->expansion;
2691 if (d1->nargs != d2->nargs)
2696 llassert (d1->args.argnames != NULL);
2697 llassert (d2->args.argnames != NULL);
2699 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames) != 0)
2704 for (a1 = d1->pattern, a2 = d2->pattern;
2705 (a1 != NULL) && (a2 != NULL);
2706 a1 = a1->next, a2 = a2->next) {
2707 if (!((a1->nchars == a2->nchars
2708 && (strncmp (p1, p2, size_fromInt (a1->nchars)) == 0))
2709 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
2710 || a1->argno != a2->argno
2711 || a1->stringify != a2->stringify
2712 || a1->raw_before != a2->raw_before
2713 || a1->raw_after != a2->raw_after)
2722 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
2723 p2, d2->length - (p2 - d2->expansion), 1))
2729 /* Return TRUE if two parts of two macro definitions are effectively different.
2730 One of the parts starts at BEG1 and has LEN1 chars;
2731 the other has LEN2 chars at BEG2.
2732 Any sequence of whitespace matches any other sequence of whitespace.
2733 FIRST means these parts are the first of a macro definition;
2734 so ignore leading whitespace entirely.
2735 LAST means these parts are the last of a macro definition;
2736 so ignore trailing whitespace entirely. */
2739 comp_def_part (bool first, char *beg1, int len1, char *beg2, int len2, bool last)
2741 char *end1 = beg1 + len1;
2742 char *end2 = beg2 + len2;
2745 while (beg1 != end1 && is_space[(int) *beg1]) { beg1++; }
2746 while (beg2 != end2 && is_space[(int) *beg2]) { beg2++; }
2749 while (beg1 != end1 && is_space[(int) end1[-1]]) { end1--; }
2750 while (beg2 != end2 && is_space[(int) end2[-1]]) { end2--; }
2752 while (beg1 != end1 && beg2 != end2) {
2753 if (is_space[(int) *beg1] && is_space[(int) *beg2]) {
2754 while (beg1 != end1 && is_space[(int) *beg1]) { beg1++; }
2755 while (beg2 != end2 && is_space[(int) *beg2]) { beg2++; }
2756 } else if (*beg1 == *beg2) {
2760 return (beg1 != end1) || (beg2 != end2);
2763 /* Process a #define command.
2764 BUF points to the contents of the #define command, as a contiguous string.
2765 LIMIT points to the first character past the end of the definition.
2766 KEYWORD is the keyword-table entry for #define,
2767 or NULL for a "predefined" macro. */
2770 do_defineAux (cppReader *pfile, struct directive *keyword,
2771 /*@exposed@*/ char *buf, char *limit, bool noExpand)
2777 DPRINTF (("Define aux: %d", noExpand));
2779 mdef = create_definition (buf, limit, pfile, keyword == NULL, noExpand);
2784 hashcode = cpphash_hashCode (mdef.symnam, mdef.symlen, CPP_HASHSIZE);
2786 DPRINTF (("Macro: %s / %s",
2787 cstring_copyLength (mdef.symnam, mdef.symlen),
2788 bool_unparse (noExpand)));
2790 if ((hp = cpphash_lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL)
2794 /* Redefining a precompiled key is ok. */
2795 if (hp->type == T_PCSTRING)
2797 /* Redefining a macro is ok if the definitions are the same. */
2798 else if (hp->type == T_MACRO)
2799 ok = !compare_defs (mdef.defn, hp->value.defn);
2800 /* Redefining a constant is ok with -D. */
2801 else if (hp->type == T_CONST)
2802 ok = !CPPOPTIONS (pfile)->done_initializing;
2807 /* Print the warning if it's not ok. */
2811 ** If we are passing through #define and #undef directives, do
2812 ** that for this re-definition now.
2815 if (CPPOPTIONS (pfile)->debug_output && (keyword != NULL))
2817 /* llassert (keyword != NULL); */
2818 pass_thru_directive (buf, limit, pfile, keyword);
2821 cpp_setLocation (pfile);
2823 if (hp->type == T_MACRO)
2825 if (hp->value.defn->noExpand)
2827 ; /* error will be reported checking macros */
2833 message ("Macro %q already defined",
2834 cstring_copyLength (mdef.symnam, mdef.symlen)),
2835 message ("%q: Previous definition of %q",
2836 fileloc_unparseRaw (hp->value.defn->file,
2837 (int) hp->value.defn->line),
2838 cstring_copyLength (mdef.symnam, mdef.symlen)));
2843 genppllerror (FLG_MACROREDEF,
2844 message ("Macro %q already defined",
2845 cstring_copyLength (mdef.symnam,
2851 /* Replace the old definition. */
2853 hp->value.defn = mdef.defn;
2858 ** If we are passing through #define and #undef directives, do
2859 ** that for this new definition now.
2864 if (CPPOPTIONS (pfile)->debug_output && (keyword != NULL))
2866 pass_thru_directive (buf, limit, pfile, keyword);
2869 DPRINTF (("Define macro: %s / %d",
2870 mdef.symnam, mdef.defn->noExpand));
2872 hn = cpphash_installMacro (mdef.symnam, mdef.symlen, mdef.defn, hashcode);
2874 } /*@=branchstate@*/
2884 do_define (cppReader *pfile, struct directive *keyword,
2885 /*@exposed@*/ char *buf, char *limit)
2887 DPRINTF (("Regular do define"));
2888 return do_defineAux (pfile, keyword, buf, limit, FALSE);
2891 /* This structure represents one parsed argument in a macro call.
2892 `raw' points to the argument text as written (`raw_length' is its length).
2893 `expanded' points to the argument's macro-expansion
2894 (its length is `expand_length').
2895 `stringified_length' is the length the argument would have
2897 `use_count' is the number of times this macro arg is substituted
2898 into the macro. If the actual use count exceeds 10,
2899 the value stored is 10. */
2901 /* raw and expanded are relative to ARG_BASE */
2903 #define ARG_BASE ((pfile)->token_buffer)
2906 /* Strings relative to pfile->token_buffer */
2912 int stringified_length;
2917 /* Allocate a new cppBuffer for PFILE, and push it on the input buffer stack.
2918 If BUFFER != NULL, then use the LENGTH characters in BUFFER
2919 as the new input buffer.
2920 Return the new buffer, or NULL on failure. */
2922 /*@null@*/ /*@exposed@*/ cppBuffer *
2923 cppReader_pushBuffer (cppReader *pfile, char *buffer, size_t length)
2925 cppBuffer *buf = cppReader_getBuffer (pfile);
2927 if (buf == pfile->buffer_stack)
2929 cppReader_fatalError
2931 message ("%s: macro or `#include' recursion too deep",
2932 (buf->fname != NULL)
2934 : cstring_makeLiteral ("<no name>")));
2935 sfreeEventually (buffer);
2939 llassert (buf != NULL);
2942 memset ((char *) buf, 0, sizeof (*buf));
2943 CPPBUFFER (pfile) = buf;
2945 buf->if_stack = pfile->if_stack;
2946 buf->cleanup = cppReader_nullCleanup;
2947 buf->underflow = cppReader_nullUnderflow;
2949 buf->cur = buf->buf;
2953 buf->alimit = buf->rlimit = buffer + length;
2957 buf->alimit = buf->rlimit = NULL;
2964 cppReader_popBuffer (cppReader *pfile)
2966 cppBuffer *buf = CPPBUFFER (pfile);
2968 llassert (buf != NULL);
2970 (void) (*buf->cleanup) (buf, pfile);
2971 return ++CPPBUFFER (pfile);
2974 /* Scan until CPPBUFFER (PFILE) is exhausted into PFILE->token_buffer.
2975 Pop the buffer when done. */
2978 cppReader_scanBuffer (cppReader *pfile)
2980 cppBuffer *buffer = CPPBUFFER (pfile);
2983 enum cpp_token token;
2985 token = cpplib_getToken (pfile);
2987 if (token == CPP_EOF) /* Should not happen ... */
2992 if (token == CPP_POP && CPPBUFFER (pfile) == buffer)
2994 (void) cppReader_popBuffer (pfile);
3001 * Rescan a string (which may have escape marks) into pfile's buffer.
3002 * Place the result in pfile->token_buffer.
3004 * The input is copied before it is scanned, so it is safe to pass
3005 * it something from the token_buffer that will get overwritten
3006 * (because it follows cpplib_getWritten). This is used by do_include.
3010 cpp_expand_to_buffer (cppReader *pfile, char *buf, size_t length)
3012 register cppBuffer *ip;
3013 char *limit = buf + length;
3014 char *buf1, *p1, *p2;
3016 /* evans - 2001-08-26
3017 ** length is unsigned - this doesn't make sense
3023 /* Set up the input on the input stack. */
3025 buf1 = (char *) dmalloc (length + 1);
3035 buf1[length] = '\0';
3037 ip = cppReader_pushBuffer (pfile, buf1, length);
3042 ip->has_escapes = TRUE;
3044 /* Scan the input, create the output. */
3045 cppReader_scanBuffer (pfile);
3047 cppReader_nullTerminate (pfile);
3051 adjust_position (char *buf, char *limit, int *linep, int *colp)
3057 (*linep)++, (*colp) = 1;
3063 /* Move line_base forward, updating lineno and colno. */
3066 update_position (cppBuffer *pbuf)
3069 char *new_pos = pbuf->cur;
3070 register struct parse_marker *mark;
3072 llassert (pbuf->buf != NULL);
3073 old_pos = pbuf->buf + pbuf->line_base;
3075 for (mark = pbuf->marks; mark != NULL; mark = mark->next)
3077 if (pbuf->buf + mark->position < new_pos)
3078 new_pos = pbuf->buf + mark->position;
3080 pbuf->line_base += new_pos - old_pos;
3082 llassert (old_pos != NULL);
3083 llassert (new_pos != NULL);
3085 adjust_position (old_pos, new_pos, &pbuf->lineno, &pbuf->colno);
3089 cppBuffer_lineAndColumn (/*@null@*/ cppBuffer *pbuf, /*@out@*/ int *linep,
3090 /*@null@*/ /*@out@*/ int *colp)
3098 } /*@=branchstate@*/
3102 *linep = pbuf->lineno;
3103 *colp = pbuf->colno;
3105 llassert (pbuf->buf != NULL);
3106 llassert (pbuf->cur != NULL);
3108 adjust_position (pbuf->buf + pbuf->line_base, pbuf->cur, linep, colp);
3117 /* Return the cppBuffer that corresponds to a file (not a macro). */
3119 /*@exposed@*/ /*@null@*/ cppBuffer *cppReader_fileBuffer (cppReader *pfile)
3121 cppBuffer *ip = cppReader_getBuffer (pfile);
3124 ip != NULL && ip != cppReader_nullBuffer (pfile);
3125 ip = cppBuffer_prevBuffer (ip))
3127 if (ip->fname != NULL)
3137 count_newlines (char *buf, char *limit)
3139 register long count = 0;
3151 * write out a #line command, for instance, after an #include file.
3152 * If CONDITIONAL is nonzero, we can omit the #line if it would
3153 * appear to be a no-op, and we can output a few newlines instead
3154 * if we want to increase the line number by a small amount.
3155 * FILE_CHANGE says whether we are entering a file, leaving, or neither.
3159 output_line_command (cppReader *pfile, bool conditional,
3160 enum file_change_code file_change)
3163 cppBuffer *ip = CPPBUFFER (pfile);
3166 llassert (ip != NULL);
3168 if (ip->fname == NULL)
3171 update_position (ip);
3173 if (CPPOPTIONS (pfile)->no_line_commands
3174 || CPPOPTIONS (pfile)->no_output)
3177 buf = CPPBUFFER (pfile);
3179 llassert (buf != NULL);
3184 llassert (ip->cur != NULL);
3186 adjust_position (cppLineBase (ip), ip->cur, &line, &col);
3188 if (CPPOPTIONS (pfile)->no_line_commands)
3192 if (line == pfile->lineno)
3195 /* If the inherited line number is a little too small,
3196 output some newlines instead of a #line command. */
3198 if (line > pfile->lineno && line < pfile->lineno + 8)
3200 cpplib_reserve (pfile, 20);
3201 while (line > pfile->lineno)
3203 cppReader_putCharQ (pfile, '\n');
3211 cpplib_reserve (pfile,
3212 size_fromInt (4 * cstring_length (ip->nominal_fname) + 50));
3215 #ifdef OUTPUT_LINE_COMMANDS
3216 static char sharp_line[] = "#line ";
3218 static char sharp_line[] = "# ";
3220 cppReader_putStrN (pfile, sharp_line, sizeof(sharp_line)-1);
3223 sprintf (cpplib_getPWritten (pfile), "%d ", line);
3224 cppReader_adjustWritten (pfile, strlen (cpplib_getPWritten (pfile)));
3226 quote_string (pfile, cstring_toCharsSafe (ip->nominal_fname));
3228 if (file_change != same_file) {
3229 cppReader_putCharQ (pfile, ' ');
3230 cppReader_putCharQ (pfile, file_change == enter_file ? '1' : '2');
3232 /* Tell cc1 if following text comes from a system header file. */
3233 if (ip->system_header_p != '\0') {
3234 cppReader_putCharQ (pfile, ' ');
3235 cppReader_putCharQ (pfile, '3');
3237 #ifndef NO_IMPLICIT_EXTERN_C
3238 /* Tell cc1plus if following text should be treated as C. */
3239 if (ip->system_header_p == (char) 2 && CPPOPTIONS (pfile)->cplusplus) {
3240 cppReader_putCharQ (pfile, ' ');
3241 cppReader_putCharQ (pfile, '4');
3244 cppReader_putCharQ (pfile, '\n');
3245 pfile->lineno = line;
3250 * Parse a macro argument and append the info on PFILE's token_buffer.
3251 * REST_ARGS means to absorb the rest of the args.
3252 * Return nonzero to indicate a syntax error.
3255 static enum cpp_token
3256 macarg (cppReader *pfile, int rest_args)
3259 enum cpp_token token;
3260 char save_put_out_comments = CPPOPTIONS (pfile)->put_out_comments;
3261 bool oldexpand = pfile->no_macro_expand;
3262 CPPOPTIONS (pfile)->put_out_comments = 1;
3264 /* Try to parse as much of the argument as exists at this
3265 input stack level. */
3267 pfile->no_macro_expand = TRUE;
3271 token = cpplib_getToken (pfile);
3278 /* If we've hit end of file, it's an error (reported by caller).
3279 Ditto if it's the end of cpp_expand_to_buffer text.
3280 If we've hit end of macro, just continue. */
3281 if (!cppBuffer_isMacro (CPPBUFFER (pfile)))
3283 /*@switchbreak@*/ break;
3286 /*@switchbreak@*/ break;
3290 /*@switchbreak@*/ break;
3292 /* if we've returned to lowest level and
3293 we aren't absorbing all args */
3294 if (paren == 0 && rest_args == 0)
3296 /*@switchbreak@*/ break;
3298 /* Remove ',' or ')' from argument buffer. */
3299 cppReader_adjustWritten (pfile, -1);
3307 CPPOPTIONS (pfile)->put_out_comments = save_put_out_comments;
3308 pfile->no_macro_expand = oldexpand;
3314 /* Turn newlines to spaces in the string of length LENGTH at START,
3315 except inside of string constants.
3316 The string is copied into itself with its beginning staying fixed. */
3319 change_newlines (char *start, int length)
3323 register char *limit;
3327 limit = start + length;
3330 while (ibp < limit) {
3331 *obp++ = c = *ibp++;
3336 /* Notice and skip strings, so that we don't delete newlines in them. */
3339 while (ibp < limit) {
3340 *obp++ = c = *ibp++;
3342 /*@innerbreak@*/ break;
3343 if (c == '\n' && quotec == '\'')
3344 /*@innerbreak@*/ break;
3347 /*@switchbreak@*/ break;
3354 static /*@observer@*/ struct tm *
3355 timestamp (/*@returned@*/ cppReader *pfile)
3357 if (pfile->timebuf == NULL)
3359 time_t t = time ((time_t *) 0);
3360 pfile->timebuf = localtime (&t);
3363 llassert (pfile->timebuf != NULL);
3365 return pfile->timebuf;
3368 static ob_mstring monthnames[] = {
3369 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
3370 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
3374 * expand things like __FILE__. Place the expansion into the output
3375 * buffer *without* rescanning.
3379 special_symbol (hashNode hp, cppReader *pfile)
3381 cstring buf = cstring_undefined;
3387 int paren = 0; /* For special `defined' keyword */
3389 for (ip = cppReader_getBuffer (pfile); ip != NULL; ip = cppBuffer_prevBuffer (ip))
3391 if (ip == cppReader_nullBuffer (pfile))
3393 cppReader_errorLit (pfile,
3394 cstring_makeLiteralTemp ("cccp error: not in any file?!"));
3395 return; /* the show must go on */
3398 if (ip != NULL && ip->fname != NULL)
3410 if (hp->type == T_BASE_FILE)
3412 while (cppBuffer_prevBuffer (ip) != cppReader_nullBuffer (pfile))
3414 ip = cppBuffer_prevBuffer (ip);
3418 llassert (ip != NULL);
3419 string = cstring_toCharsSafe (ip->nominal_fname);
3426 cpplib_reserve (pfile, 3 + 4 * strlen (string));
3427 quote_string (pfile, string);
3431 case T_INCLUDE_LEVEL:
3433 ip = cppReader_getBuffer (pfile);
3435 for (; ip != cppReader_nullBuffer (pfile) && ip != NULL;
3436 ip = cppBuffer_prevBuffer (ip))
3438 if (ip != NULL && ip->fname != NULL)
3444 buf = message ("%d", true_indepth - 1);
3448 buf = cstring_makeLiteral ("\"--- cpp version---\"");
3451 #ifndef NO_BUILTIN_SIZE_TYPE
3453 buf = cstring_makeLiteral (SIZE_TYPE);
3457 #ifndef NO_BUILTIN_PTRDIFF_TYPE
3458 case T_PTRDIFF_TYPE:
3459 buf = cstring_makeLiteral (PTRDIFF_TYPE);
3464 buf = cstring_makeLiteral (cppReader_wcharType (pfile));
3467 case T_USER_LABEL_PREFIX_TYPE:
3468 buf = cstring_makeLiteral (USER_LABEL_PREFIX);
3471 case T_REGISTER_PREFIX_TYPE:
3472 buf = cstring_makeLiteral (REGISTER_PREFIX);
3476 buf = message ("%d", hp->value.ival);
3483 int line = ip->lineno;
3484 int col = ip->colno;
3486 llassert (ip->cur != NULL);
3487 adjust_position (cppLineBase (ip), ip->cur, &line, &col);
3489 buf = message ("%d", (int) line);
3501 char *sbuf = (char *) dmalloc (20);
3502 timebuf = timestamp (pfile);
3503 if (hp->type == T_DATE)
3505 sprintf (sbuf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
3506 timebuf->tm_mday, timebuf->tm_year + 1900);
3510 sprintf (sbuf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
3514 buf = cstring_fromCharsNew (sbuf);
3519 case T_SPEC_DEFINED:
3520 buf = cstring_makeLiteral (" 0 "); /* Assume symbol is not defined */
3521 ip = cppReader_getBuffer (pfile);
3523 llassert (ip->cur != NULL);
3524 SKIP_WHITE_SPACE (ip->cur);
3526 if (*ip->cur == '(')
3529 ip->cur++; /* Skip over the paren */
3530 SKIP_WHITE_SPACE (ip->cur);
3533 if (!is_idstart[(int) *ip->cur])
3535 if (ip->cur[0] == 'L' && (ip->cur[1] == '\'' || ip->cur[1] == '\"'))
3538 if ((hp = cpphash_lookup (ip->cur, -1, -1)) != 0)
3541 buf = cstring_makeLiteral (" 1 ");
3544 while (is_idchar[(int) *ip->cur])
3549 SKIP_WHITE_SPACE (ip->cur);
3553 if (*ip->cur != ')')
3561 cppReader_errorLit (pfile,
3562 cstring_makeLiteralTemp ("`defined' without an identifier"));
3566 cpp_setLocation (pfile);
3567 llfatalerror (message ("Pre-processing error: invalid special hash type"));
3570 len = size_fromInt (cstring_length (buf));
3572 cpplib_reserve (pfile, len + 1);
3573 cppReader_putStrN (pfile, cstring_toCharsSafe (buf), len);
3574 cppReader_nullTerminateQ (pfile);
3580 /* Write out a #define command for the special named MACRO_NAME
3581 to PFILE's token_buffer. */
3584 dump_special_to_buffer (cppReader *pfile, char *macro_name)
3586 static char define_directive[] = "#define ";
3587 size_t macro_name_length = strlen (macro_name);
3588 output_line_command (pfile, 0, same_file);
3589 cpplib_reserve (pfile, sizeof(define_directive) + macro_name_length);
3590 cppReader_putStrN (pfile, define_directive, sizeof(define_directive)-1);
3591 cppReader_putStrN (pfile, macro_name, macro_name_length);
3592 cppReader_putCharQ (pfile, ' ');
3593 cpp_expand_to_buffer (pfile, macro_name, macro_name_length);
3594 cppReader_putChar (pfile, '\n');
3597 /* Initialize the built-in macros. */
3600 cpplib_installBuiltin (/*@observer@*/ char *name, ctype ctyp,
3601 int len, enum node_type type,
3602 int ivalue, /*@null@*/ /*@only@*/ char *value,
3605 cstring sname = cstring_fromCharsNew (name);
3607 llassert (usymtab_inGlobalScope ());
3610 ** Be careful here: this is done before the ctype table has
3611 ** been initialized.
3614 if (!usymtab_exists (sname))
3616 uentry ue = uentry_makeConstant (sname, ctyp, fileloc_createBuiltin ());
3618 if (ctype_equal (ctyp, ctype_string))
3620 qualList ql = qualList_new ();
3621 ql = qualList_add (ql, qual_createObserver ());
3622 uentry_reflectQualifiers (ue, ql);
3626 usymtab_addGlobalEntry (ue);
3633 (void) cpphash_install (name, len, type, ivalue, value, hash);
3634 cstring_free (sname);
3638 cpplib_installBuiltinType (/*@observer@*/ char *name, ctype ctyp,
3639 int len, enum node_type type,
3641 /*@only@*/ /*@null@*/ char *value, int hash)
3643 cstring sname = cstring_fromChars (name);
3644 /* evs 2000 07 10 - removed a memory leak, detected by splint */
3646 llassert (usymtab_inGlobalScope ());
3648 if (!usymtab_existsTypeEither (sname))
3650 uentry ue = uentry_makeDatatype (sname, ctyp,
3652 fileloc_createBuiltin ());
3653 llassert (!usymtab_existsEither (sname));
3654 usymtab_addGlobalEntry (ue);
3657 (void) cpphash_install (name, len, type, ivalue, value, hash);
3661 initialize_builtins (cppReader *pfile)
3663 cpplib_installBuiltin ("__LINE__", ctype_int, -1, T_SPECLINE, 0, NULL, -1);
3664 cpplib_installBuiltin ("__DATE__", ctype_string, -1, T_DATE, 0, NULL, -1);
3665 cpplib_installBuiltin ("__FILE__", ctype_string, -1, T_FILE, 0, NULL, -1);
3666 cpplib_installBuiltin ("__BASE_FILE__", ctype_string, -1, T_BASE_FILE, 0, NULL, -1);
3667 cpplib_installBuiltin ("__INCLUDE_LEVEL__", ctype_int, -1, T_INCLUDE_LEVEL, 0, NULL, -1);
3668 cpplib_installBuiltin ("__VERSION__", ctype_string, -1, T_VERSION, 0, NULL, -1);
3669 #ifndef NO_BUILTIN_SIZE_TYPE
3670 cpplib_installBuiltinType ("__SIZE_TYPE__", ctype_anyintegral, -1, T_SIZE_TYPE, 0, NULL, -1);
3672 #ifndef NO_BUILTIN_PTRDIFF_TYPE
3673 cpplib_installBuiltinType ("__PTRDIFF_TYPE__", ctype_anyintegral, -1, T_PTRDIFF_TYPE, 0, NULL, -1);
3675 cpplib_installBuiltinType ("__WCHAR_TYPE__", ctype_anyintegral, -1, T_WCHAR_TYPE, 0, NULL, -1);
3676 cpplib_installBuiltin ("__USER_LABEL_PREFIX__", ctype_string, -1, T_USER_LABEL_PREFIX_TYPE, 0, NULL, -1);
3677 cpplib_installBuiltin ("__REGISTER_PREFIX__", ctype_string, -1, T_REGISTER_PREFIX_TYPE, 0, NULL, -1);
3678 cpplib_installBuiltin ("__TIME__", ctype_string, -1, T_TIME, 0, NULL, -1);
3681 ** No, don't define __STDC__
3684 if (!cppReader_isTraditional (pfile))
3686 cpplib_installBuiltin ("__STDC__", ctype_int, -1, T_CONST, STDC_VALUE, NULL, -1);
3693 cpplib_installBuiltin ("_WIN32", ctype_int, -1, T_CONST, STDC_VALUE, NULL, -1);
3697 ** This is supplied using a -D by the compiler driver
3698 ** so that it is present only when truly compiling with GNU C.
3701 /* cpplib_install ("__GNUC__", -1, T_CONST, 2, 0, -1); */
3703 cpplib_installBuiltin ("S_SPLINT_S", ctype_int, -1, T_CONST, 2, NULL, -1);
3704 cpplib_installBuiltin ("__LCLINT__", ctype_int, -1, T_CONST, 2, NULL, -1);
3706 if (CPPOPTIONS (pfile)->debug_output)
3708 dump_special_to_buffer (pfile, "__BASE_FILE__");
3709 dump_special_to_buffer (pfile, "__VERSION__");
3710 #ifndef NO_BUILTIN_SIZE_TYPE
3711 dump_special_to_buffer (pfile, "__SIZE_TYPE__");
3713 #ifndef NO_BUILTIN_PTRDIFF_TYPE
3714 dump_special_to_buffer (pfile, "__PTRDIFF_TYPE__");
3716 dump_special_to_buffer (pfile, "__WCHAR_TYPE__");
3717 dump_special_to_buffer (pfile, "__DATE__");
3718 dump_special_to_buffer (pfile, "__TIME__");
3719 if (!cppReader_isTraditional (pfile))
3720 dump_special_to_buffer (pfile, "__STDC__");
3725 /* Return 1 iff a token ending in C1 followed directly by a token C2
3726 could cause mis-tokenization. */
3729 unsafe_chars (char c1, char c2)
3734 if (c2 == c1 || c2 == '=')
3738 case '0': case '1': case '2': case '3': case '4':
3739 case '5': case '6': case '7': case '8': case '9':
3740 case 'e': case 'E': case 'p': case 'P':
3741 if (c2 == '-' || c2 == '+')
3742 return 1; /* could extend a pre-processing number */
3745 if (c2 == '\'' || c2 == '\"')
3746 return 1; /* Could turn into L"xxx" or L'xxx'. */
3750 case 'a': case 'b': case 'c': case 'd': case 'f':
3751 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
3752 case 'm': case 'n': case 'o': case 'q': case 'r':
3753 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
3755 case 'A': case 'B': case 'C': case 'D': case 'F':
3756 case 'G': case 'H': case 'I': case 'J': case 'K':
3757 case 'M': case 'N': case 'O': case 'Q': case 'R':
3758 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
3760 /* We're in the middle of either a name or a pre-processing number. */
3761 return (is_idchar[(int) c2] || c2 == '.');
3762 case '<': case '>': case '!': case '%': case '#': case ':':
3763 case '^': case '&': case '|': case '*': case '/': case '=':
3764 return (c2 == c1 || c2 == '=');
3769 /* Expand a macro call.
3770 HP points to the symbol that is the macro being called.
3771 Put the result of expansion onto the input stack
3772 so that subsequent input by our caller will use it.
3774 If macro wants arguments, caller has already verified that
3775 an argument list follows; arguments come from the input stack. */
3778 cpplib_macroExpand (cppReader *pfile, /*@dependent@*/ hashNode hp)
3781 DEFINITION *defn = hp->value.defn;
3787 size_t old_written = cpplib_getWritten (pfile);
3791 struct argdata *args = NULL;
3793 pfile->output_escapes++;
3795 cppBuffer_lineAndColumn (cppReader_fileBuffer (pfile), &start_line, &start_column);
3797 nargs = defn->nargs;
3801 enum cpp_token token = CPP_EOF;
3803 args = (struct argdata *) dmalloc ((nargs + 1) * sizeof (*args));
3805 for (i = 0; i < nargs; i++)
3807 args[i].expanded = 0;
3809 args[i].raw_length = 0;
3810 args[i].expand_length = args[i].stringified_length = -1;
3811 args[i].use_count = 0;
3815 ** Parse all the macro args that are supplied. I counts them.
3816 ** The first NARGS args are stored in ARGS.
3817 ** The rest are discarded. If rest_args is set then we assume
3818 ** macarg absorbed the rest of the args.
3824 cppReader_forward (pfile, 1); /* Discard the open-parenthesis before the first arg. */
3832 if (i < nargs || (nargs == 0 && i == 0))
3834 /* if we are working on last arg which absorbs rest of args... */
3835 if (i == nargs - 1 && defn->rest_args)
3840 args[i].raw = size_toLong (cpplib_getWritten (pfile));
3841 token = macarg (pfile, rest_args);
3842 args[i].raw_length = cpplib_getWritten (pfile) - args[i].raw;
3843 args[i].newlines = FALSE; /* FIXME */
3847 token = macarg (pfile, 0);
3850 if (token == CPP_EOF || token == CPP_POP)
3852 cppReader_errorWithLine (pfile, start_line, start_column,
3853 cstring_fromCharsNew ("unterminated macro call"));
3858 } while (token == CPP_COMMA);
3860 /* If we got one arg but it was just whitespace, call that 0 args. */
3868 bp = ARG_BASE + args[0].raw;
3869 lim = bp + args[0].raw_length;
3871 /* cpp.texi says for foo ( ) we provide one argument.
3872 However, if foo wants just 0 arguments, treat this as 0. */
3876 while (bp != lim && is_space[(int) *bp])
3886 /* Don't output an error message if we have already output one for
3887 a parse error above. */
3890 if (nargs == 0 && i > 0)
3892 cppReader_error (pfile,
3893 message ("arguments given to macro `%s'", hp->name));
3897 /* traditional C allows foo() if foo wants one argument. */
3898 if (nargs == 1 && i == 0 && cppReader_isTraditional (pfile))
3902 /* the rest args token is allowed to absorb 0 tokens */
3903 else if (i == nargs - 1 && defn->rest_args)
3906 cppReader_error (pfile,
3907 message ("macro `%s' used without args", hp->name));
3909 cppReader_error (pfile,
3910 message ("macro `%s' used with just one arg", hp->name));
3913 cppReader_error (pfile,
3914 message ("macro `%s' used with only %d args",
3920 cppReader_error (pfile,
3921 message ("macro `%s' used with too many (%d) args", hp->name, i));
3929 /* If macro wants zero args, we parsed the arglist for checking only.
3930 Read directly from the macro definition. */
3934 xbuf = defn->expansion;
3935 xbuf_len = defn->length;
3939 char *exp = defn->expansion;
3940 int offset; /* offset in expansion,
3941 copied a piece at a time */
3942 size_t totlen; /* total amount of exp buffer filled so far */
3944 register struct reflist *ap, *last_ap;
3946 assertSet (args); /* args is defined since the nargs > 0 path was taken */
3948 /* Macro really takes args. Compute the expansion of this call. */
3950 /* Compute length in characters of the macro's expansion.
3951 Also count number of times each arg is used. */
3952 xbuf_len = defn->length;
3954 llassert (args != NULL);
3956 for (ap = defn->pattern; ap != NULL; ap = ap->next)
3960 struct argdata *arg = &args[ap->argno];
3962 /* Stringify it it hasn't already been */
3965 if (arg->stringified_length < 0)
3967 int arglen = arg->raw_length;
3968 bool escaped = FALSE;
3969 char in_string = '\0';
3972 /* Initially need_space is -1. Otherwise, 1 means the
3973 previous character was a space, but we suppressed it;
3974 0 means the previous character was a non-space. */
3975 int need_space = -1;
3978 arg->stringified = cpplib_getWritten (pfile);
3979 if (!cppReader_isTraditional (pfile))
3980 cppReader_putChar (pfile, '\"'); /* insert beginning quote */
3981 for (; i < arglen; i++)
3983 c = (ARG_BASE + arg->raw)[i];
3985 if (in_string == '\0')
3987 /* Internal sequences of whitespace are replaced by
3988 one space except within an string or char token.*/
3989 if (is_space[(int) c])
3991 if (cpplib_getWritten (pfile) > arg->stringified
3992 && (cpplib_getPWritten (pfile))[-1] == '@')
3994 /* "@ " escape markers are removed */
3995 cppReader_adjustWritten (pfile, -1);
3996 /*@innercontinue@*/ continue;
3998 if (need_space == 0)
4000 /*@innercontinue@*/ continue;
4002 else if (need_space > 0)
4003 cppReader_putChar (pfile, ' ');
4019 if (in_string != '\0')
4024 else if (c == '\"' || c == '\'')
4034 /* Escape these chars */
4035 if (c == '\"' || (in_string != '\0' && c == '\\'))
4036 cppReader_putChar (pfile, '\\');
4038 cppReader_putChar (pfile, c);
4041 cpplib_reserve (pfile, 4);
4042 sprintf (cpplib_getPWritten (pfile), "\\%03o",
4044 cppReader_adjustWritten (pfile, 4);
4047 if (!cppReader_isTraditional (pfile))
4048 cppReader_putChar (pfile, '\"'); /* insert ending quote */
4049 arg->stringified_length
4050 = size_toInt (cpplib_getWritten (pfile) - arg->stringified);
4053 xbuf_len += args[ap->argno].stringified_length;
4055 else if (ap->raw_before || ap->raw_after || cppReader_isTraditional (pfile))
4057 /* Add 4 for two newline-space markers to prevent
4058 token concatenation. */
4059 assertSet (args); /*@i534 shouldn't need this */
4060 xbuf_len += args[ap->argno].raw_length + 4;
4064 /* We have an ordinary (expanded) occurrence of the arg.
4065 So compute its expansion, if we have not already. */
4067 assertSet (args); /*@i534 shouldn't need this */
4069 if (args[ap->argno].expand_length < 0)
4071 args[ap->argno].expanded = cpplib_getWritten (pfile);
4072 cpp_expand_to_buffer (pfile,
4073 ARG_BASE + args[ap->argno].raw,
4074 size_fromInt (args[ap->argno].raw_length));
4076 args[ap->argno].expand_length
4077 = size_toInt (cpplib_getWritten (pfile) - args[ap->argno].expanded);
4080 /* Add 4 for two newline-space markers to prevent
4081 token concatenation. */
4082 xbuf_len += args[ap->argno].expand_length + 4;
4084 if (args[ap->argno].use_count < 10)
4085 args[ap->argno].use_count++;
4088 xbuf = (char *) dmalloc (xbuf_len + 1);
4092 ** Generate in XBUF the complete expansion
4093 ** with arguments substituted in.
4094 ** TOTLEN is the total size generated so far.
4095 ** OFFSET is the index in the definition
4096 ** of where we are copying from.
4102 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
4103 last_ap = ap, ap = ap->next)
4105 register struct argdata *arg = &args[ap->argno];
4106 size_t count_before = totlen;
4108 /* Add chars to XBUF. */
4109 for (i = 0; i < ap->nchars; i++, offset++)
4111 xbuf[totlen++] = exp[offset];
4114 /* If followed by an empty rest arg with concatenation,
4115 delete the last run of nonwhite chars. */
4116 if (rest_zero && totlen > count_before
4117 && ((ap->rest_args && ap->raw_before)
4118 || (last_ap != NULL && last_ap->rest_args
4119 && last_ap->raw_after)))
4121 /* Delete final whitespace. */
4122 while (totlen > count_before && is_space[(int) xbuf[totlen - 1]])
4127 /* Delete the nonwhites before them. */
4128 while (totlen > count_before && ! is_space[(int) xbuf[totlen - 1]])
4134 if (ap->stringify != 0)
4137 memcpy (xbuf + totlen,
4138 ARG_BASE + arg->stringified,
4139 size_fromInt (arg->stringified_length));
4140 totlen += arg->stringified_length;
4142 else if (ap->raw_before || ap->raw_after || cppReader_isTraditional (pfile))
4149 p1 = ARG_BASE + arg->raw;
4150 l1 = p1 + arg->raw_length;
4154 while (p1 != l1 && is_space[(int) *p1])
4159 while (p1 != l1 && is_idchar[(int) *p1])
4161 xbuf[totlen++] = *p1++;
4164 /* Delete any no-reexpansion marker that follows
4165 an identifier at the beginning of the argument
4166 if the argument is concatenated with what precedes it. */
4167 if (p1[0] == '@' && p1[1] == '-')
4172 /* Arg is concatenated after: delete trailing whitespace,
4173 whitespace markers, and no-reexpansion markers. */
4176 if (is_space[(int) l1[-1]]) l1--;
4177 else if (l1[-1] == '-')
4180 /* If a `-' is preceded by an odd number of newlines then it
4181 and the last newline are a no-reexpansion marker. */
4182 while (p2 != p1 && p2[-1] == '\n')
4187 if (((l1 - 1 - p2) & 1) != 0)
4193 /*@innerbreak@*/ break;
4198 /*@innerbreak@*/ break;
4203 memcpy (xbuf + totlen, p1, size_fromInt (l1 - p1));
4211 expanded = ARG_BASE + arg->expanded;
4213 if (!ap->raw_before && totlen > 0
4214 && (arg->expand_length != 0)
4215 && !cppReader_isTraditional(pfile)
4216 && unsafe_chars (xbuf[totlen-1], expanded[0]))
4218 xbuf[totlen++] = '@';
4219 xbuf[totlen++] = ' ';
4222 memcpy (xbuf + totlen, expanded,
4223 size_fromInt (arg->expand_length));
4224 totlen += arg->expand_length;
4226 if (!ap->raw_after && totlen > 0
4227 && offset < size_toInt (defn->length)
4228 && !cppReader_isTraditional(pfile)
4229 && unsafe_chars (xbuf[totlen-1], exp[offset]))
4231 xbuf[totlen++] = '@';
4232 xbuf[totlen++] = ' ';
4235 /* If a macro argument with newlines is used multiple times,
4236 then only expand the newlines once. This avoids creating
4237 output lines which don't correspond to any input line,
4238 which confuses gdb and gcov. */
4239 if (arg->use_count > 1 && arg->newlines > 0)
4241 /* Don't bother doing change_newlines for subsequent
4245 = change_newlines (expanded, arg->expand_length);
4249 if (totlen > xbuf_len)
4253 /* if there is anything left of the definition
4254 after handling the arg list, copy that in too. */
4256 for (i = offset; i < size_toInt (defn->length); i++)
4258 /* if we've reached the end of the macro */
4261 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
4262 && last_ap->raw_after))
4263 xbuf[totlen++] = exp[i];
4266 xbuf[totlen] = '\0';
4270 pfile->output_escapes--;
4272 /* Now put the expansion on the input stack
4273 so our caller will commence reading from it. */
4274 push_macro_expansion (pfile, xbuf, xbuf_len, hp);
4275 cppReader_getBuffer (pfile)->has_escapes = 1;
4277 /* Pop the space we've used in the token_buffer for argument expansion. */
4278 cppReader_setWritten (pfile, old_written);
4280 /* Recursive macro use sometimes works traditionally.
4281 #define foo(x,y) bar (x (y,0), y)
4284 if (!cppReader_isTraditional (pfile))
4285 hp->type = T_DISABLED;
4291 push_macro_expansion (cppReader *pfile, char *xbuf, size_t xbuf_len,
4292 /*@dependent@*/ hashNode hp)
4294 cppBuffer *mbuf = cppReader_pushBuffer (pfile, xbuf, xbuf_len);
4301 mbuf->cleanup = cppReader_macroCleanup;
4303 llassert (mbuf->hnode == NULL);
4306 /* The first chars of the expansion should be a "@ " added by
4307 collect_expansion. This is to prevent accidental token-pasting
4308 between the text preceding the macro invocation, and the macro
4311 We would like to avoid adding unneeded spaces (for the sake of
4312 tools that use cpp, such as imake). In some common cases we can
4313 tell that it is safe to omit the space.
4315 The character before the macro invocation cannot have been an
4316 idchar (or else it would have been pasted with the idchars of
4317 the macro name). Therefore, if the first non-space character
4318 of the expansion is an idchar, we do not need the extra space
4319 to prevent token pasting.
4321 Also, we don't need the extra space if the first char is '(',
4322 or some other (less common) characters. */
4324 if (xbuf[0] == '@' && xbuf[1] == ' '
4325 && (is_idchar[(int) xbuf[2]] || xbuf[2] == '(' || xbuf[2] == '\''
4326 || xbuf[2] == '\"'))
4328 llassert (mbuf->cur != NULL);
4334 /* Like cpplib_getToken, except that it does not read past end-of-line.
4335 Also, horizontal space is skipped, and macros are popped. */
4337 static enum cpp_token
4338 get_directive_token (cppReader *pfile)
4342 size_t old_written = cpplib_getWritten (pfile);
4343 enum cpp_token token;
4344 cppSkipHspace (pfile);
4345 if (cppReader_peekC (pfile) == '\n')
4350 token = cpplib_getToken (pfile);
4355 if (!cppBuffer_isMacro (cppReader_getBuffer (pfile)))
4360 cppReader_setWritten (pfile, old_written);
4361 /*@switchbreak@*/ break;
4369 /* Handle #include and #import.
4370 This function expects to see "fname" or <fname> on the input.
4372 The input is normally in part of the output_buffer following
4373 cpplib_getWritten, and will get overwritten by output_line_command.
4374 I.e. in input file specification has been popped by cppReader_handleDirective.
4378 do_include (cppReader *pfile, struct directive *keyword,
4379 /*@unused@*/ char *unused1, /*@unused@*/ char *unused2)
4381 bool skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4383 char *fbeg, *fend; /* Beginning and end of fname */
4384 enum cpp_token token;
4386 /* Chain of dirs to search */
4387 struct file_name_list *search_start = CPPOPTIONS (pfile)->include;
4388 struct file_name_list dsp[1]; /* First in chain, if #include "..." */
4389 struct file_name_list *searchptr = NULL;
4390 size_t old_written = cpplib_getWritten (pfile);
4394 int f; /* file number */
4395 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4396 f= -1; /* JF we iz paranoid! */
4398 pfile->parsing_include_directive++;
4399 token = get_directive_token (pfile);
4400 pfile->parsing_include_directive--;
4402 if (token == CPP_STRING)
4404 /* FIXME - check no trailing garbage */
4405 fbeg = pfile->token_buffer + old_written + 1;
4406 fend = cpplib_getPWritten (pfile) - 1;
4407 if (fbeg[-1] == '<')
4410 /* If -I-, start with the first -I dir after the -I-. */
4411 if (CPPOPTIONS (pfile)->first_bracket_include != NULL)
4412 search_start = CPPOPTIONS (pfile)->first_bracket_include;
4414 /* If -I- was specified, don't search current dir, only spec'd ones. */
4415 else if (!CPPOPTIONS (pfile)->ignore_srcdir)
4417 cppBuffer *fp = CPPBUFFER (pfile);
4418 /* We have "filename". Figure out directory this source
4419 file is coming from and put it on the front of the list. */
4421 for ( ; fp != cppReader_nullBuffer (pfile); fp = cppBuffer_prevBuffer (fp))
4426 llassert (fp != NULL);
4430 if (cstring_isDefined (fp->nominal_fname))
4432 nam = cstring_toCharsSafe (fp->nominal_fname);
4434 /* Found a named file. Figure out dir of the file,
4435 and put it in front of the search list. */
4436 dsp[0].next = search_start;
4440 ep = strrchr (nam, CONNECTCHAR);
4442 ep = strrchr (nam, ']');
4443 if (ep == NULL) ep = strrchr (nam, '>');
4444 if (ep == NULL) ep = strrchr (nam, ':');
4445 if (ep != NULL) ep++;
4455 /*@-onlytrans@*/ /* This looks like a memory leak... */
4456 dsp[0].fname = cstring_fromCharsNew (nam); /* evs 2000-07-20: was fromChars */
4460 if (n + INCLUDE_LEN_FUDGE > pfile->max_include_len)
4461 pfile->max_include_len = n + INCLUDE_LEN_FUDGE;
4465 dsp[0].fname = cstring_undefined; /* Current directory */
4468 dsp[0].got_name_map = 0;
4479 else if (token == CPP_NAME)
4482 * Support '#include xyz' like VAX-C to allow for easy use of all the
4483 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4484 * code from case '<' is repeated here) and generates a warning.
4486 cppReader_warning (pfile,
4487 "VAX-C-style include specification found, use '#include <filename.h>' !");
4489 /* If -I-, start with the first -I dir after the -I-. */
4490 if (CPPOPTIONS (pfile)->first_bracket_include)
4491 search_start = CPPOPTIONS (pfile)->first_bracket_include;
4492 fbeg = pfile->token_buffer + old_written;
4493 fend = cpplib_getPWritten (pfile);
4498 cppReader_error (pfile,
4499 message ("Preprocessor command #%s expects \"FILENAME\" or <FILENAME>",
4502 cppReader_setWritten (pfile, old_written);
4503 cppReader_skipRestOfLine (pfile);
4509 token = get_directive_token (pfile);
4510 if (token != CPP_VSPACE)
4512 cppReader_errorLit (pfile,
4513 cstring_makeLiteralTemp ("Junk at end of #include"));
4515 while (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP)
4517 token = get_directive_token (pfile);
4522 ** For #include_next, skip in the search path
4523 ** past the dir in which the containing file was found.
4528 cppBuffer *fp = CPPBUFFER (pfile);
4530 for (; fp != cppReader_nullBuffer (pfile); fp = cppBuffer_prevBuffer (fp))
4532 llassert (fp != NULL);
4534 if (fp->fname != NULL)
4536 /* fp->dir is null if the containing file was specified with
4537 an absolute file name. In that case, don't skip anything. */
4538 if (fp->dir == SELF_DIR_DUMMY)
4540 search_start = CPPOPTIONS (pfile)->include;
4542 else if (fp->dir != NULL)
4544 search_start = fp->dir->next;
4556 cppReader_setWritten (pfile, old_written);
4560 DPRINTF (("fbeg: %s", fbeg));
4564 cppReader_error (pfile,
4565 message ("Empty file name in #%s", keyword->name));
4570 ** Allocate this permanently, because it gets stored in the definitions
4574 fname = cstring_undefined;
4576 /* + 2 above for slash and terminating null. */
4577 /* + 2 added for '.h' on VMS (to support '#include filename') */
4579 /* If specified file name is absolute, just open it. */
4581 if (osd_isConnectChar (*fbeg)
4582 # if defined (WIN32) || defined (OS2)
4583 || (*(fbeg + 1) == ':')
4587 fname = cstring_copyLength (fbeg, flen);
4589 if (redundant_include_p (pfile, fname))
4591 cstring_free (fname);
4595 f = open_include_file (pfile, fname, NULL);
4597 if (f == IMPORT_FOUND)
4599 return 0; /* Already included this file */
4604 /* Search directory path, trying to open the file.
4605 Copy each filename tried into FNAME. */
4607 for (searchptr = search_start; searchptr != NULL;
4608 searchptr = searchptr->next)
4610 if (!cstring_isEmpty (searchptr->fname))
4612 /* The empty string in a search path is ignored.
4613 This makes it possible to turn off entirely
4614 a standard piece of the list. */
4615 if (cstring_isEmpty (searchptr->fname))
4618 fname = cstring_copy (searchptr->fname);
4619 fname = cstring_appendChar (fname, CONNECTCHAR);
4620 DPRINTF (("Here: %s", fname));
4627 fname = cstring_concatLength (fname, fbeg, flen);
4629 DPRINTF (("fname: %s", fname));
4631 /* Win32 directory fix from Kay Buschner. */
4632 #if defined (WIN32) || defined (OS2)
4633 /* Fix all unixdir slashes to win dir slashes */
4634 if (searchptr->fname && (searchptr->fname[0] != 0))
4636 cstring_replaceAll (fname, '/', '\\');
4641 /* Change this 1/2 Unix 1/2 VMS file specification into a
4642 full VMS file specification */
4643 if (searchptr->fname && (searchptr->fname[0] != 0)) {
4644 /* Fix up the filename */
4645 hack_vms_include_specification (fname);
4647 /* This is a normal VMS filespec, so use it unchanged. */
4648 strncpy (fname, fbeg, flen);
4650 /* if it's '#include filename', add the missing .h */
4651 if (strchr (fname,'.') == NULL) {
4652 strcat (fname, ".h");
4656 /* ??? There are currently 3 separate mechanisms for avoiding processing
4657 of redundant include files: #import, #pragma once, and
4658 redundant_include_p. It would be nice if they were unified. */
4660 if (redundant_include_p (pfile, fname))
4662 cstring_free (fname);
4666 DPRINTF (("Trying: %s", fname));
4668 f = open_include_file (pfile, fname, searchptr);
4670 if (f == IMPORT_FOUND)
4672 return 0; /* Already included this file */
4675 else if (f == IMPORT_NOT_FOUND && errno == EACCES)
4677 cppReader_warning (pfile,
4678 message ("Header file %s exists, but is not readable", fname));
4691 /* A file that was not found. */
4692 fname = cstring_copyLength (fbeg, flen);
4694 if (search_start != NULL)
4696 cppReader_error (pfile,
4697 message ("Cannot find include file %s on search path: %x",
4699 searchPath_unparse (search_start)));
4703 cppReader_error (pfile,
4704 message ("No include path in which to find %s", fname));
4709 ** Check to see if this include file is a once-only include file.
4713 struct file_name_list *ptr;
4715 for (ptr = pfile->all_include_files; ptr != NULL; ptr = ptr->next)
4717 if (cstring_equal (ptr->fname, fname))
4719 /* This file was included before. */
4726 /* This is the first time for this file. */
4727 /* Add it to list of files included. */
4729 ptr = (struct file_name_list *) dmalloc (sizeof (*ptr));
4730 ptr->control_macro = NULL;
4731 ptr->c_system_include_path = NULL;
4732 ptr->next = pfile->all_include_files;
4734 ptr->got_name_map = NULL;
4736 DPRINTF (("Including file: %s", fname));
4737 pfile->all_include_files = ptr;
4738 assertSet (pfile->all_include_files);
4741 if (angle_brackets != 0)
4743 pfile->system_include_depth++;
4746 /* Actually process the file */
4747 if (cppReader_pushBuffer (pfile, NULL, 0) == NULL)
4749 cstring_free (fname);
4753 if (finclude (pfile, f, fname, is_system_include (pfile, fname),
4754 searchptr != dsp ? searchptr : SELF_DIR_DUMMY))
4756 output_line_command (pfile, 0, enter_file);
4757 pfile->only_seen_white = 2;
4762 pfile->system_include_depth--;
4765 } /*@=branchstate@*/
4770 /* Return nonzero if there is no need to include file NAME
4771 because it has already been included and it contains a conditional
4772 to make a repeated include do nothing. */
4775 redundant_include_p (cppReader *pfile, cstring name)
4777 struct file_name_list *l = pfile->all_include_files;
4779 for (; l != NULL; l = l->next)
4781 if (cstring_equal (name, l->fname)
4782 && (l->control_macro != NULL)
4783 && (cpphash_lookup (l->control_macro, -1, -1) != NULL))
4792 /* Return nonzero if the given FILENAME is an absolute pathname which
4793 designates a file within one of the known "system" include file
4794 directories. We assume here that if the given FILENAME looks like
4795 it is the name of a file which resides either directly in a "system"
4796 include file directory, or within any subdirectory thereof, then the
4797 given file must be a "system" include file. This function tells us
4798 if we should suppress pedantic errors/warnings for the given FILENAME.
4800 The value is 2 if the file is a C-language system header file
4801 for which C++ should (on most systems) assume `extern "C"'. */
4804 is_system_include (cppReader *pfile, cstring filename)
4806 struct file_name_list *searchptr;
4808 for (searchptr = CPPOPTIONS (pfile)->first_system_include;
4810 searchptr = searchptr->next)
4812 if (!cstring_isEmpty (searchptr->fname)) {
4813 cstring sys_dir = searchptr->fname;
4814 int length = cstring_length (sys_dir);
4816 if (cstring_equalLen (sys_dir, filename, length)
4817 && osd_isConnectChar (cstring_getChar (filename, length)))
4819 if (searchptr->c_system_include_path)
4830 /* Convert a character string literal into a nul-terminated string.
4831 The input string is [IN ... LIMIT).
4832 The result is placed in RESULT. RESULT can be the same as IN.
4833 The value returned in the end of the string written to RESULT,
4834 or NULL on error. */
4836 static /*@null@*/ char *
4837 convert_string (cppReader *pfile, /*@returned@*/ char *result,
4838 char *in, char *limit, int handle_escapes)
4858 /*@switchbreak@*/ break;
4862 char *bpc = (char *) in;
4863 int i = (char) cppReader_parseEscape (pfile, &bpc);
4866 *result++ = (char) c;
4867 /*@switchbreak@*/ break;
4881 * interpret #line command. Remembers previously seen fnames
4882 * in its very own hash table.
4885 /*@constant int FNAME_HASHSIZE@*/
4886 #define FNAME_HASHSIZE 37
4889 do_line (cppReader *pfile, /*@unused@*/ struct directive *keyword)
4891 cppBuffer *ip = cppReader_getBuffer (pfile);
4893 size_t old_written = cpplib_getWritten (pfile);
4894 enum file_change_code file_change = same_file;
4895 enum cpp_token token;
4897 token = get_directive_token (pfile);
4899 if (token != CPP_NUMBER
4900 || !isdigit(pfile->token_buffer[old_written]))
4902 cppReader_errorLit (pfile,
4903 cstring_makeLiteralTemp ("invalid format `#line' command"));
4905 goto bad_line_directive;
4908 /* The Newline at the end of this line remains to be processed.
4909 To put the next line at the specified line number,
4910 we must store a line number now that is one less. */
4911 new_lineno = atoi (pfile->token_buffer + old_written) - 1;
4912 cppReader_setWritten (pfile, old_written);
4914 /* NEW_LINENO is one less than the actual line number here. */
4915 if (cppReader_isPedantic (pfile) && new_lineno < 0)
4916 cppReader_pedwarnLit (pfile,
4917 cstring_makeLiteralTemp ("line number out of range in `#line' command"));
4919 token = get_directive_token (pfile);
4921 if (token == CPP_STRING) {
4922 char *fname = pfile->token_buffer + old_written;
4924 static hashNode fname_table[FNAME_HASHSIZE];
4926 hashNode *hash_bucket;
4931 /* Turn the file name, which is a character string literal,
4932 into a null-terminated string. Do this in place. */
4933 end_name = convert_string (pfile, fname, fname, cpplib_getPWritten (pfile), 1);
4934 if (end_name == NULL)
4936 cppReader_errorLit (pfile,
4937 cstring_makeLiteralTemp ("invalid format `#line' command"));
4938 goto bad_line_directive;
4941 fname_length = end_name - fname;
4942 num_start = cpplib_getWritten (pfile);
4944 token = get_directive_token (pfile);
4945 if (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP) {
4946 p = pfile->token_buffer + num_start;
4947 if (cppReader_isPedantic (pfile))
4948 cppReader_pedwarnLit (pfile,
4949 cstring_makeLiteralTemp ("garbage at end of `#line' command"));
4951 if (token != CPP_NUMBER || *p < '0' || *p > '4' || p[1] != '\0')
4953 cppReader_errorLit (pfile,
4954 cstring_makeLiteralTemp ("invalid format `#line' command"));
4955 goto bad_line_directive;
4958 file_change = enter_file;
4960 file_change = leave_file;
4962 ip->system_header_p = 1;
4963 else /* if (*p == 4) */
4964 ip->system_header_p = 2;
4966 cppReader_setWritten (pfile, num_start);
4967 token = get_directive_token (pfile);
4968 p = pfile->token_buffer + num_start;
4969 if (token == CPP_NUMBER && p[1] == '\0' && (*p == '3' || *p== '4')) {
4970 ip->system_header_p = *p == 3 ? 1 : 2;
4971 token = get_directive_token (pfile);
4973 if (token != CPP_VSPACE) {
4974 cppReader_errorLit (pfile,
4975 cstring_makeLiteralTemp ("invalid format `#line' command"));
4977 goto bad_line_directive;
4982 &fname_table[cpphash_hashCode (fname, fname_length, FNAME_HASHSIZE)];
4983 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
4985 if (hp->length == fname_length &&
4986 strncmp (hp->value.cpval, fname, size_fromInt (fname_length)) == 0) {
4987 ip->nominal_fname = cstring_fromChars (hp->value.cpval);
4993 /* Didn't find it; cons up a new one. */
4994 hp = (hashNode) dmalloc (sizeof (*hp));
4997 hp->bucket_hdr = NULL;
4999 hp->name = cstring_undefined;
5000 hp->next = *hash_bucket;
5004 hp->length = fname_length;
5005 hp->value.cpval = dmalloc (sizeof (*hp->value.cpval) * (fname_length + 1));
5006 memcpy (hp->value.cpval, fname, size_fromInt (fname_length));
5007 hp->value.cpval[fname_length] = '\0';
5008 ip->nominal_fname = cstring_fromChars (hp->value.cpval);
5011 else if (token != CPP_VSPACE && token != CPP_EOF)
5013 cppReader_errorLit (pfile,
5014 cstring_makeLiteralTemp ("invalid format `#line' command"));
5015 goto bad_line_directive;
5022 ip->lineno = new_lineno;
5024 cppReader_skipRestOfLine (pfile);
5025 cppReader_setWritten (pfile, old_written);
5026 output_line_command (pfile, 0, file_change);
5031 * remove the definition of a symbol from the symbol table.
5032 * according to un*x /lib/cpp, it is not an error to undef
5033 * something that has no definitions, so it isn't one here either.
5037 do_undef (cppReader *pfile, struct directive *keyword, char *buf, char *limit)
5042 char *orig_buf = buf;
5044 SKIP_WHITE_SPACE (buf);
5046 sym_length = cppReader_checkMacroName (pfile, buf, cstring_makeLiteralTemp ("macro"));
5048 while ((hp = cpphash_lookup (buf, sym_length, -1)) != NULL)
5050 /* If we are generating additional info for debugging (with -g) we
5051 need to pass through all effective #undef commands. */
5052 if (CPPOPTIONS (pfile)->debug_output && (keyword != NULL))
5054 pass_thru_directive (orig_buf, limit, pfile, keyword);
5057 if (hp->type != T_MACRO)
5059 cppReader_warning (pfile,
5060 message ("Undefining preprocessor builtin: %s",
5064 cppReader_deleteMacro (hp);
5067 if (cppReader_isPedantic (pfile)) {
5069 SKIP_WHITE_SPACE (buf);
5072 cppReader_pedwarnLit (pfile,
5073 cstring_makeLiteralTemp ("garbage after `#undef' directive"));
5082 * Report an error detected by the program we are processing.
5083 * Use the text of the line in the error message.
5084 * (We use error because it prints the filename & line#.)
5088 do_error (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5089 char *buf, char *limit)
5091 int length = limit - buf;
5092 cstring copy = cstring_copyLength (buf, length);
5093 cstring adv = cstring_advanceWhiteSpace (copy);
5095 cppReader_error (pfile, message ("#error %s", adv));
5096 cstring_free (copy);
5101 * Report a warning detected by the program we are processing.
5102 * Use the text of the line in the warning message, then continue.
5103 * (We use error because it prints the filename & line#.)
5107 do_warning (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5108 char *buf, char *limit)
5110 int length = limit - buf;
5111 cstring copy = cstring_copyLength (buf, length);
5112 cstring adv = cstring_advanceWhiteSpace (copy);
5113 cppReader_warning (pfile, message ("#warning %s", adv));
5114 cstring_free (copy);
5119 /* #ident has already been copied to the output file, so just ignore it. */
5122 do_ident (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5123 /*@unused@*/ char *buf, /*@unused@*/ char *limit)
5125 /* Allow #ident in system headers, since that's not user's fault. */
5126 if (cppReader_isPedantic (pfile) && !cppReader_getBuffer (pfile)->system_header_p)
5127 cppReader_pedwarnLit (pfile,
5128 cstring_makeLiteralTemp ("ANSI C does not allow `#ident'"));
5130 /* Leave rest of line to be read by later calls to cpplib_getToken. */
5135 /* #pragma and its argument line have already been copied to the output file.
5136 Just check for some recognized pragmas that need validation here. */
5139 do_pragma (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5140 /*@unused@*/ char *buf, /*@unused@*/ char *limit)
5142 while (*buf == ' ' || *buf == '\t')
5147 if (!strncmp (buf, "implementation", 14)) {
5148 /* Be quiet about `#pragma implementation' for a file only if it hasn't
5149 been included yet. */
5150 struct file_name_list *ptr;
5151 char *p = buf + 14, *fname, *inc_fname;
5153 SKIP_WHITE_SPACE (p);
5154 if (*p == '\n' || *p != '\"')
5158 p = (char *) strchr (fname, '\"');
5159 fname_len = p != NULL ? p - fname : mstring_length (fname);
5161 for (ptr = pfile->all_include_files; ptr != NULL; ptr = ptr->next)
5163 inc_fname = (char *) strrchr (cstring_toCharsSafe (ptr->fname), CONNECTCHAR);
5164 inc_fname = (inc_fname != NULL)
5165 ? inc_fname + 1 : cstring_toCharsSafe (ptr->fname);
5167 if ((inc_fname != NULL)
5168 && (strncmp (inc_fname, fname, size_fromInt (fname_len)) == 0))
5170 cpp_setLocation (pfile);
5172 ppllerror (message ("`#pragma implementation' for `%s' appears "
5173 "after file is included",
5174 cstring_fromChars (fname)));
5183 * handle #if command by
5184 * 1) inserting special `defined' keyword into the hash table
5185 * that gets turned into 0 or 1 by special_symbol (thus,
5186 * if the luser has a symbol called `defined' already, it won't
5187 * work inside the #if command)
5188 * 2) rescan the input into a temporary output buffer
5189 * 3) pass the output buffer to the yacc parser and collect a value
5190 * 4) clean up the mess left from steps 1 and 2.
5191 * 5) call conditional_skip to skip til the next #endif (etc.),
5192 * or not, depending on the value from step 3.
5196 do_if (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5197 char *buf, char *limit)
5199 HOST_WIDE_INT value;
5200 DPRINTF (("Do if: %s", buf));
5201 value = eval_if_expression (pfile, buf, limit - buf);
5202 conditional_skip (pfile, value == 0, T_IF, NULL);
5207 * handle a #elif directive by not changing if_stack either.
5208 * see the comment above do_else.
5211 static int do_elif (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5212 char *buf, char *limit)
5214 if (pfile->if_stack == cppReader_getBuffer (pfile)->if_stack)
5216 cppReader_errorLit (pfile,
5217 cstring_makeLiteralTemp ("Preprocessor command #elif is not within a conditional"));
5222 llassert (pfile->if_stack != NULL);
5224 if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF)
5226 cppReader_errorLit (pfile,
5227 cstring_makeLiteralTemp ("`#elif' after `#else'"));
5229 if (pfile->if_stack->fname != NULL
5230 && cppReader_getBuffer (pfile)->fname != NULL
5231 && !cstring_equal (pfile->if_stack->fname,
5232 cppReader_getBuffer (pfile)->nominal_fname))
5233 fprintf (stderr, ", file %s", cstring_toCharsSafe (pfile->if_stack->fname));
5234 fprintf (stderr, ")\n");
5236 pfile->if_stack->type = T_ELIF;
5239 if (pfile->if_stack->if_succeeded)
5241 skip_if_group (pfile, 0);
5245 HOST_WIDE_INT value = eval_if_expression (pfile, buf, limit - buf);
5247 skip_if_group (pfile, 0);
5250 ++pfile->if_stack->if_succeeded; /* continue processing input */
5251 output_line_command (pfile, 1, same_file);
5259 * evaluate a #if expression in BUF, of length LENGTH,
5260 * then parse the result as a C expression and return the value as an int.
5263 static HOST_WIDE_INT
5264 eval_if_expression (cppReader *pfile,
5265 /*@unused@*/ char *buf,
5266 /*@unused@*/ int length)
5268 hashNode save_defined;
5269 HOST_WIDE_INT value;
5270 size_t old_written = cpplib_getWritten (pfile);
5272 DPRINTF (("Saving defined..."));
5273 save_defined = cpphash_install ("defined", -1, T_SPEC_DEFINED, 0, 0, -1);
5274 pfile->pcp_inside_if = 1;
5276 value = cppReader_parseExpression (pfile);
5277 pfile->pcp_inside_if = 0;
5279 /* Clean up special symbol */
5280 DPRINTF (("Removing defined..."));
5281 cppReader_deleteMacro (save_defined);
5282 cppReader_setWritten (pfile, old_written); /* Pop */
5288 * routine to handle ifdef/ifndef. Try to look up the symbol,
5289 * then do or don't skip to the #endif/#else/#elif depending
5290 * on what directive is actually being processed.
5294 do_xifdef (cppReader *pfile, struct directive *keyword,
5295 /*@unused@*/ char *unused1, /*@unused@*/ char *unused2)
5298 cppBuffer *ip = cppReader_getBuffer (pfile);
5301 enum cpp_token token;
5302 int start_of_file = 0;
5303 char *control_macro = 0;
5304 size_t old_written = cpplib_getWritten (pfile);
5306 DPRINTF (("do xifdef: %d",
5307 keyword->type == T_IFNDEF));
5309 /* Detect a #ifndef at start of file (not counting comments). */
5310 if (cstring_isDefined (ip->fname) && keyword->type == T_IFNDEF)
5312 start_of_file = pfile->only_seen_white == 2;
5315 pfile->no_macro_expand++;
5316 token = get_directive_token (pfile);
5317 pfile->no_macro_expand--;
5319 ident = pfile->token_buffer + old_written;
5320 DPRINTF (("Ident: %s", ident));
5322 ident_length = size_toInt (cpplib_getWritten (pfile) - old_written);
5323 cppReader_setWritten (pfile, old_written); /* Pop */
5325 if (token == CPP_VSPACE || token == CPP_POP || token == CPP_EOF)
5327 skip = (keyword->type == T_IFDEF);
5328 if (! cppReader_isTraditional (pfile))
5330 cppReader_pedwarn (pfile,
5331 message ("`#%s' with no argument", keyword->name));
5334 else if (token == CPP_NAME)
5336 hashNode hp = cpphash_lookup (ident, ident_length, -1);
5338 DPRINTF (("Lookup: %s %d", ident, ident_length));
5340 skip = (keyword->type == T_IFDEF)
5341 ? (hp == NULL) : (hp != NULL);
5343 DPRINTF (("hp null: %d / %d / %d",
5345 (keyword->type == T_IFNDEF),
5348 if (start_of_file && !skip)
5350 DPRINTF (("Not skipping!"));
5351 control_macro = (char *) dmalloc (size_fromInt (ident_length + 1));
5352 memcpy (control_macro, ident, size_fromInt (ident_length + 1));
5357 skip = (keyword->type == T_IFDEF);
5358 if (! cppReader_isTraditional (pfile))
5360 cppReader_error (pfile,
5361 message ("`#%s' with invalid argument", keyword->name));
5365 if (!cppReader_isTraditional (pfile))
5368 cppSkipHspace (pfile);
5369 c = cppReader_peekC (pfile);
5370 if (c != EOF && c != '\n')
5372 cppReader_pedwarn (pfile,
5373 message ("garbage at end of `#%s' argument", keyword->name));
5377 cppReader_skipRestOfLine (pfile);
5379 DPRINTF (("Conditional skip: %d", skip));
5380 conditional_skip (pfile, skip, T_IF, control_macro);
5384 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
5385 If this is a #ifndef starting at the beginning of a file,
5386 CONTROL_MACRO is the macro name tested by the #ifndef.
5387 Otherwise, CONTROL_MACRO is 0. */
5390 conditional_skip (cppReader *pfile, int skip,
5391 enum node_type type,
5392 /*@dependent@*/ char *control_macro)
5394 cppIfStackFrame *temp = (cppIfStackFrame *) dmalloc (sizeof (*temp));
5396 temp->fname = cppReader_getBuffer (pfile)->nominal_fname;
5397 temp->next = pfile->if_stack;
5398 temp->control_macro = control_macro;
5400 temp->if_succeeded = 0;
5402 pfile->if_stack = temp;
5403 pfile->if_stack->type = type;
5407 skip_if_group (pfile, 0);
5412 ++pfile->if_stack->if_succeeded;
5413 output_line_command (pfile, 1, same_file);
5418 * skip to #endif, #else, or #elif. adjust line numbers, etc.
5419 * leaves input ptr at the sharp sign found.
5420 * If ANY is nonzero, return at next directive of any sort.
5424 skip_if_group (cppReader *pfile, int any)
5427 struct directive *kt;
5428 cppIfStackFrame *save_if_stack = pfile->if_stack; /* don't pop past here */
5429 register int ident_length;
5431 struct parse_marker line_start_mark;
5433 parseSetMark (&line_start_mark, pfile);
5435 if (CPPOPTIONS (pfile)->output_conditionals) {
5436 static char failed[] = "#failed\n";
5437 cppReader_puts (pfile, failed, sizeof(failed)-1);
5439 output_line_command (pfile, 1, same_file);
5443 if (CPPOPTIONS (pfile)->output_conditionals)
5445 cppBuffer *pbuf = cppReader_getBuffer (pfile);
5448 llassert (pbuf->buf != NULL);
5450 start_line = pbuf->buf + line_start_mark.position;
5451 cppReader_puts (pfile, start_line, size_fromInt (pbuf->cur - start_line));
5454 parseMoveMark (&line_start_mark, pfile);
5456 if (!cppReader_isTraditional (pfile))
5458 cppSkipHspace (pfile);
5461 c = cppReader_getC (pfile);
5464 size_t old_written = cpplib_getWritten (pfile);
5465 cppSkipHspace (pfile);
5467 parse_name (pfile, cppReader_getC (pfile));
5468 ident_length = size_toInt (cpplib_getWritten (pfile) - old_written);
5469 ident = pfile->token_buffer + old_written;
5470 pfile->limit = ident;
5472 for (kt = directive_table; kt->length >= 0; kt++)
5474 cppIfStackFrame *temp;
5475 if (ident_length == kt->length
5476 && cstring_equalPrefix (kt->name, cstring_fromChars (ident)))
5478 /* If we are asked to return on next directive, do so now. */
5489 temp = (cppIfStackFrame *) dmalloc (sizeof (*temp));
5490 temp->next = pfile->if_stack;
5491 temp->fname = cppReader_getBuffer (pfile)->nominal_fname;
5492 temp->type = kt->type;
5494 temp->if_succeeded = 0;
5495 temp->control_macro = NULL;
5497 pfile->if_stack = temp;
5498 /*@switchbreak@*/ break;
5501 if (cppReader_isPedantic (pfile) && pfile->if_stack != save_if_stack)
5502 validate_else (pfile,
5503 cstring_makeLiteralTemp (kt->type == T_ELSE ? "#else" : "#endif"));
5506 if (pfile->if_stack == cppReader_getBuffer (pfile)->if_stack)
5508 cppReader_error (pfile,
5509 message ("Preprocessor command #%s is not within a conditional", kt->name));
5510 /*@switchbreak@*/ break;
5512 else if (pfile->if_stack == save_if_stack)
5514 goto done; /* found what we came for */
5521 if (kt->type != T_ENDIF)
5523 llassert (pfile->if_stack != NULL);
5525 if (pfile->if_stack->type == T_ELSE)
5527 cppReader_errorLit (pfile,
5528 cstring_makeLiteralTemp ("`#else' or `#elif' after `#else'"));
5531 pfile->if_stack->type = kt->type;
5532 /*@switchbreak@*/ break;
5535 temp = pfile->if_stack;
5536 llassert (temp != NULL);
5537 pfile->if_stack = temp->next;
5539 /*@switchbreak@*/ break;
5542 #if defined (OS2) && defined (__IBMC__)
5543 /* Dummy code to eleminate optimization problems with icc */
5552 /* Don't let erroneous code go by. */
5554 if (kt->length < 0 && !CPPOPTIONS (pfile)->lang_asm
5555 && cppReader_isPedantic (pfile))
5557 cppReader_pedwarnLit (pfile,
5558 cstring_makeLiteralTemp ("Invalid preprocessor directive name"));
5562 c = cppReader_getC (pfile);
5564 /* We're in the middle of a line. Skip the rest of it. */
5572 case '/': /* possible comment */
5573 c = skip_comment (pfile, NULL);
5576 /*@switchbreak@*/ break;
5579 cppReader_forward (pfile, -1);
5580 old = cpplib_getWritten (pfile);
5581 (void) cpplib_getToken (pfile);
5582 cppReader_setWritten (pfile, old);
5583 /*@switchbreak@*/ break;
5585 /* Char after backslash loses its special meaning. */
5586 if (cppReader_peekC (pfile) == '\n')
5588 cppReader_forward (pfile, 1);
5591 /*@switchbreak@*/ break;
5595 c = cppReader_getC (pfile);
5598 if (CPPOPTIONS (pfile)->output_conditionals) {
5599 static char end_failed[] = "#endfailed\n";
5600 cppReader_puts (pfile, end_failed, sizeof(end_failed)-1);
5603 pfile->only_seen_white = 1;
5605 parseGotoMark (&line_start_mark, pfile);
5606 parseClearMark (&line_start_mark);
5610 * handle a #else directive. Do this by just continuing processing
5611 * without changing if_stack ; this is so that the error message
5612 * for missing #endif's etc. will point to the original #if. It
5613 * is possible that something different would be better.
5617 do_else (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5618 /*@unused@*/ char *buf, /*@unused@*/ char *limit)
5620 if (cppReader_isPedantic (pfile))
5622 validate_else (pfile, cstring_makeLiteralTemp ("#else"));
5625 cppReader_skipRestOfLine (pfile);
5627 if (pfile->if_stack == cppReader_getBuffer (pfile)->if_stack) {
5628 cppReader_errorLit (pfile,
5629 cstring_makeLiteralTemp ("Preprocessor command #else is not within a conditional"));
5632 /* #ifndef can't have its special treatment for containing the whole file
5633 if it has a #else clause. */
5635 llassert (pfile->if_stack != NULL);
5637 pfile->if_stack->control_macro = 0;
5639 if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF)
5641 cpp_setLocation (pfile);
5642 genppllerrorhint (FLG_PREPROC,
5643 message ("Pre-processor directive #else after #else"),
5644 message ("%q: Location of match",
5645 fileloc_unparseRaw (pfile->if_stack->fname,
5646 pfile->if_stack->lineno)));
5649 pfile->if_stack->type = T_ELSE;
5652 if (pfile->if_stack->if_succeeded)
5653 skip_if_group (pfile, 0);
5655 ++pfile->if_stack->if_succeeded; /* continue processing input */
5656 output_line_command (pfile, 1, same_file);
5663 * unstack after #endif command
5667 do_endif (cppReader *pfile, /*@unused@*/ struct directive *keyword,
5668 /*@unused@*/ char *buf, /*@unused@*/ char *limit)
5670 if (cppReader_isPedantic (pfile))
5672 validate_else (pfile, cstring_makeLiteralTemp ("#endif"));
5675 cppReader_skipRestOfLine (pfile);
5677 if (pfile->if_stack == cppReader_getBuffer (pfile)->if_stack)
5679 cppReader_errorLit (pfile, cstring_makeLiteralTemp ("Unbalanced #endif"));
5683 cppIfStackFrame *temp = pfile->if_stack;
5685 llassert (temp != NULL);
5687 pfile->if_stack = temp->next;
5688 if (temp->control_macro != 0)
5690 /* This #endif matched a #ifndef at the start of the file.
5691 See if it is at the end of the file. */
5692 struct parse_marker start_mark;
5695 parseSetMark (&start_mark, pfile);
5699 cppSkipHspace (pfile);
5700 c = cppReader_getC (pfile);
5706 parseGotoMark (&start_mark, pfile);
5707 parseClearMark (&start_mark);
5711 /* If we get here, this #endif ends a #ifndef
5712 that contains all of the file (aside from whitespace).
5713 Arrange not to include the file again
5714 if the macro that was tested is defined.
5716 Do not do this for the top-level file in a -include or any
5717 file in a -imacros. */
5718 struct file_name_list *ifile = pfile->all_include_files;
5720 for ( ; ifile != NULL; ifile = ifile->next)
5722 if (cstring_equal (ifile->fname, cppReader_getBuffer (pfile)->fname))
5724 ifile->control_macro = temp->control_macro;
5732 output_line_command (pfile, 1, same_file);
5737 /* When an #else or #endif is found while skipping failed conditional,
5738 if -pedantic was specified, this is called to warn about text after
5739 the command name. P points to the first char after the command name. */
5742 validate_else (cppReader *pfile, cstring directive)
5745 cppSkipHspace (pfile);
5746 c = cppReader_peekC (pfile);
5747 if (c != EOF && c != '\n')
5749 cppReader_pedwarn (pfile,
5750 message ("text following `%s' violates ANSI standard", directive));
5755 ** Get the next token, and add it to the text in pfile->token_buffer.
5756 ** Return the kind of token we got.
5760 cpplib_getToken (cppReader *pfile)
5762 return cpplib_getTokenAux (pfile, FALSE);
5766 cpplib_getTokenForceExpand (cppReader *pfile)
5768 return cpplib_getTokenAux (pfile, TRUE);
5772 cpplib_getTokenAux (cppReader *pfile, bool forceExpand)
5775 size_t old_written = 0;
5776 int start_line, start_column;
5777 enum cpp_token token;
5778 struct cppOptions *opts = CPPOPTIONS (pfile);
5779 cppReader_getBuffer (pfile)->prev = cppReader_getBuffer (pfile)->cur;
5782 c = cppReader_getC (pfile);
5783 DPRINTF (("Get next token: %c", c));
5788 if (cppReader_getBuffer (pfile)->seen_eof)
5790 cppBuffer *buf = cppReader_popBuffer (pfile);
5792 if (buf != cppReader_nullBuffer (pfile))
5803 cppBuffer *next_buf = cppBuffer_prevBuffer (cppReader_getBuffer (pfile));
5804 cppReader_getBuffer (pfile)->seen_eof = 1;
5806 if (cstring_isDefined (cppReader_getBuffer (pfile)->nominal_fname)
5807 && next_buf != cppReader_nullBuffer (pfile))
5809 /* We're about to return from an #include file.
5810 Emit #line information now (as part of the CPP_POP) result.
5811 But the #line refers to the file we will pop to. */
5812 cppBuffer *cur_buffer = CPPBUFFER (pfile);
5813 CPPBUFFER (pfile) = next_buf;
5814 pfile->input_stack_listing_current = 0;
5815 output_line_command (pfile, 0, leave_file);
5816 CPPBUFFER (pfile) = cur_buffer;
5824 struct parse_marker start_mark;
5829 if (cppReader_peekC (pfile) == '=')
5834 if (opts->put_out_comments)
5836 parseSetMark (&start_mark, pfile);
5840 cppBuffer_lineAndColumn (cppReader_fileBuffer (pfile),
5841 &start_line, &start_column);
5842 c = skip_comment (pfile, &newlines);
5844 if (opts->put_out_comments && (c == '/' || c == EOF))
5846 assertSet (&start_mark);
5847 parseClearMark (&start_mark);
5854 cppReader_errorWithLine (pfile, start_line, start_column,
5855 cstring_makeLiteral ("Unterminated comment"));
5858 c = '/'; /* Initial letter of comment. */
5860 /* Comments are equivalent to spaces.
5861 For -traditional, a comment is equivalent to nothing. */
5863 if (opts->put_out_comments)
5867 assertSet (&start_mark);
5868 res = cpp_handleComment (pfile, &start_mark);
5869 pfile->lineno += newlines;
5872 else if (cppReader_isTraditional (pfile))
5878 cpplib_reserve(pfile, 1);
5879 cppReader_putCharQ (pfile, ' ');
5884 if (!pfile->only_seen_white)
5889 if (cppReader_handleDirective (pfile))
5891 return CPP_DIRECTIVE;
5894 pfile->only_seen_white = 0;
5899 /* A single quoted string is treated like a double -- some
5900 programs (e.g., troff) are perverse this way */
5901 cppBuffer_lineAndColumn (cppReader_fileBuffer (pfile),
5902 &start_line, &start_column);
5903 old_written = cpplib_getWritten (pfile);
5905 cppReader_putChar (pfile, c);
5908 int cc = cppReader_getC (pfile);
5911 if (cppBuffer_isMacro (CPPBUFFER (pfile)))
5913 /* try harder: this string crosses a macro expansion
5914 boundary. This can happen naturally if -traditional.
5915 Otherwise, only -D can make a macro with an unmatched
5918 = cppBuffer_prevBuffer (cppReader_getBuffer (pfile));
5919 (*cppReader_getBuffer (pfile)->cleanup)
5920 (cppReader_getBuffer (pfile), pfile);
5921 CPPBUFFER (pfile) = next_buf;
5924 if (!cppReader_isTraditional (pfile))
5926 cpp_setLocation (pfile);
5928 setLine (long_toInt (start_line));
5929 setColumn (long_toInt (start_column));
5931 if (pfile->multiline_string_line != long_toInt (start_line)
5932 && pfile->multiline_string_line != 0)
5936 message ("Unterminated string or character constant"),
5937 message ("%q: Possible real start of unterminated constant",
5939 (fileloc_filename (g_currentloc),
5940 pfile->multiline_string_line)));
5941 pfile->multiline_string_line = 0;
5947 message ("Unterminated string or character constant"));
5950 /*@loopbreak@*/ break;
5952 cppReader_putChar (pfile, cc);
5956 /* Traditionally, end of line ends a string constant with
5957 no error. So exit the loop and record the new line. */
5958 if (cppReader_isTraditional (pfile))
5964 if (cppReader_isPedantic (pfile)
5965 && pfile->multiline_string_line == 0)
5967 cppReader_pedwarnWithLine
5968 (pfile, long_toInt (start_line),
5969 long_toInt (start_column),
5970 cstring_makeLiteral ("String constant runs past end of line"));
5972 if (pfile->multiline_string_line == 0)
5974 pfile->multiline_string_line = start_line;
5977 /*@switchbreak@*/ break;
5980 cc = cppReader_getC (pfile);
5983 /* Backslash newline is replaced by nothing at all. */
5984 cppReader_adjustWritten (pfile, -1);
5989 /* ANSI stupidly requires that in \\ the second \
5990 is *not* prevented from combining with a newline. */
5993 cppReader_putChar (pfile, cc);
5995 /*@switchbreak@*/ break;
6001 /*@switchbreak@*/ break;
6005 pfile->lineno += count_newlines (pfile->token_buffer + old_written,
6006 cpplib_getPWritten (pfile));
6007 pfile->only_seen_white = 0;
6008 return c == '\'' ? CPP_CHAR : CPP_STRING;
6011 if (!opts->dollars_in_ident)
6016 if (opts->cplusplus && cppReader_peekC (pfile) == ':')
6024 c2 = cppReader_peekC (pfile);
6025 if (c2 == c || c2 == '=')
6035 if (cppReader_peekC (pfile) == '=')
6041 c2 = cppReader_peekC (pfile);
6042 if (c2 == '-' && opts->chill)
6044 /* Chill style comment */
6045 if (opts->put_out_comments)
6047 parseSetMark (&start_mark, pfile);
6050 cppReader_forward (pfile, 1); /* Skip second '-'. */
6054 c = cppReader_getC (pfile);
6056 /*@loopbreak@*/ break;
6059 /* Don't consider final '\n' to be part of comment. */
6060 cppReader_forward (pfile, -1);
6061 /*@loopbreak@*/ break;
6065 goto return_comment;
6067 if (c2 == '-' || c2 == '=' || c2 == '>')
6072 if (pfile->parsing_include_directive)
6076 cppReader_putChar (pfile, c);
6078 /*@loopbreak@*/ break;
6079 c = cppReader_getC (pfile);
6081 if (c == '\n' || c == EOF)
6083 cppReader_errorLit (pfile,
6084 cstring_makeLiteralTemp ("Missing '>' in \"#include <FILENAME>\""));
6085 /*@loopbreak@*/ break;
6093 c2 = cppReader_peekC (pfile);
6098 cppReader_forward (pfile, 1);
6099 cpplib_reserve (pfile, 4);
6100 cppReader_putChar (pfile, c);
6101 cppReader_putChar (pfile, c2);
6103 c3 = cppReader_peekC (pfile);
6105 cppReader_putCharQ (pfile, cppReader_getC (pfile));
6106 cppReader_nullTerminateQ (pfile);
6107 pfile->only_seen_white = 0;
6111 if (cppReader_getBuffer (pfile)->has_escapes)
6113 c = cppReader_getC (pfile);
6116 if (pfile->output_escapes)
6117 cppReader_puts (pfile, "@-", 2);
6118 parse_name (pfile, cppReader_getC (pfile));
6121 else if (is_space [c])
6123 cpplib_reserve (pfile, 2);
6124 if (pfile->output_escapes)
6125 cppReader_putCharQ (pfile, '@');
6126 cppReader_putCharQ (pfile, c);
6134 if (pfile->output_escapes)
6136 cppReader_puts (pfile, "@@", 2);
6142 c2 = cppReader_peekC (pfile);
6145 cpplib_reserve(pfile, 2);
6146 cppReader_putCharQ (pfile, '.');
6147 c = cppReader_getC (pfile);
6151 /* FIXME - misses the case "..\\\n." */
6152 if (c2 == '.' && cpp_peekN (pfile, 1) == '.')
6154 cpplib_reserve(pfile, 4);
6155 cppReader_putCharQ (pfile, '.');
6156 cppReader_putCharQ (pfile, '.');
6157 cppReader_putCharQ (pfile, '.');
6158 cppReader_forward (pfile, 2);
6159 cppReader_nullTerminateQ (pfile);
6160 pfile->only_seen_white = 0;
6166 pfile->only_seen_white = 0;
6168 cpplib_reserve(pfile, 3);
6169 cppReader_putCharQ (pfile, c);
6170 cppReader_putCharQ (pfile, cppReader_getC (pfile));
6171 cppReader_nullTerminateQ (pfile);
6176 c2 = cppReader_peekC (pfile);
6177 if ((c2 == '\'' || c2 == '\"') && !cppReader_isTraditional (pfile))
6179 cppReader_putChar (pfile, c);
6180 c = cppReader_getC (pfile);
6185 case '0': case '1': case '2': case '3': case '4':
6186 case '5': case '6': case '7': case '8': case '9':
6191 cpplib_reserve (pfile, 2);
6192 cppReader_putCharQ (pfile, c);
6194 c = cppReader_peekC (pfile);
6196 /*@loopbreak@*/ break;
6197 if (!is_idchar[c] && c != '.'
6198 && ((c2 != 'e' && c2 != 'E'
6199 && ((c2 != 'p' && c2 != 'P') || cppReader_isC89 (pfile)))
6200 || (c != '+' && c != '-')))
6201 /*@loopbreak@*/ break;
6202 cppReader_forward (pfile, 1);
6206 cppReader_nullTerminateQ (pfile);
6207 pfile->only_seen_white = 0;
6210 case 'b': case 'c': case 'd': case 'h': case 'o':
6211 case 'B': case 'C': case 'D': case 'H': case 'O':
6212 if (opts->chill && cppReader_peekC (pfile) == '\'')
6214 pfile->only_seen_white = 0;
6215 cpplib_reserve (pfile, 2);
6216 cppReader_putCharQ (pfile, c);
6217 cppReader_putCharQ (pfile, '\'');
6218 cppReader_forward (pfile, 1);
6221 c = cppReader_getC (pfile);
6223 goto chill_number_eof;
6226 if (c == '\\' && cppReader_peekC (pfile) == '\n')
6228 cppReader_forward (pfile, 2);
6231 /*@loopbreak@*/ break;
6233 cppReader_putChar (pfile, c);
6237 cpplib_reserve (pfile, 2);
6238 cppReader_putCharQ (pfile, c);
6239 cppReader_nullTerminateQ (pfile);
6244 cppReader_forward (pfile, -1);
6246 cppReader_nullTerminate (pfile);
6253 case 'a': case 'e': case 'f': case 'g': case 'i': case 'j':
6254 case 'k': case 'l': case 'm': case 'n': case 'p': case 'q':
6255 case 'r': case 's': case 't': case 'u': case 'v': case 'w':
6256 case 'x': case 'y': case 'z':
6257 case 'A': case 'E': case 'F': case 'G': case 'I': case 'J':
6258 case 'K': case 'M': case 'N': case 'P': case 'Q': case 'R':
6259 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
6265 size_t before_name_written = cpplib_getWritten (pfile);
6267 parse_name (pfile, c);
6268 pfile->only_seen_white = 0;
6270 if (pfile->no_macro_expand)
6272 DPRINTF (("Not expanding: %s", pfile->token_buffer));
6276 ident = pfile->token_buffer + before_name_written;
6277 DPRINTF (("Ident: %s", ident));
6279 ident_len = (cpplib_getPWritten (pfile)) - ident;
6281 hp = cpphash_lookupExpand (ident, ident_len, -1, forceExpand);
6285 DPRINTF (("No expand: %s %d", ident, ident_len));
6289 if (hp->type == T_DISABLED)
6291 DPRINTF (("Disabled!"));
6293 if (pfile->output_escapes)
6294 { /* Return "@-IDENT", followed by '\0'. */
6296 cpplib_reserve (pfile, 3);
6297 ident = pfile->token_buffer + before_name_written;
6298 cppReader_adjustWritten (pfile, 2);
6300 for (i = ident_len; i >= 0; i--)
6302 ident[i+2] = ident[i];
6312 ** If macro wants an arglist, verify that a '(' follows.
6313 ** first skip all whitespace, copying it to the output
6314 ** after the macro name. Then, if there is no '(',
6315 ** decide this is not a macro call and leave things that way.
6318 if (hp->type == T_MACRO && hp->value.defn->nargs >= 0)
6320 struct parse_marker macro_mark;
6323 while (cppBuffer_isMacro (CPPBUFFER (pfile)))
6325 cppBuffer *next_buf;
6326 cppSkipHspace (pfile);
6327 if (cppReader_peekC (pfile) != EOF)
6329 /*@loopbreak@*/ break;
6332 next_buf = cppBuffer_prevBuffer (cppReader_getBuffer (pfile));
6333 (*cppReader_getBuffer (pfile)->cleanup) (cppReader_getBuffer (pfile), pfile);
6334 CPPBUFFER (pfile) = next_buf;
6337 parseSetMark (¯o_mark, pfile);
6341 cppSkipHspace (pfile);
6342 c = cppReader_peekC (pfile);
6343 is_macro_call = c == '(';
6345 /*@loopbreak@*/ break;
6346 cppReader_forward (pfile, 1);
6351 parseGotoMark (¯o_mark, pfile);
6354 parseClearMark (¯o_mark);
6361 /* This is now known to be a macro call. */
6363 /* it might not actually be a macro. */
6364 if (hp->type != T_MACRO)
6369 cppReader_setWritten (pfile, before_name_written);
6370 special_symbol (hp, pfile);
6371 xbuf_len = cpplib_getWritten (pfile) - before_name_written;
6372 xbuf = (char *) dmalloc (xbuf_len + 1);
6373 cppReader_setWritten (pfile, before_name_written);
6374 memcpy (xbuf, cpplib_getPWritten (pfile), xbuf_len + 1);
6375 push_macro_expansion (pfile, xbuf, xbuf_len, hp);
6380 ** Expand the macro, reading arguments as needed,
6381 ** and push the expansion on the input stack.
6384 cpplib_macroExpand (pfile, hp);
6385 cppReader_setWritten (pfile, before_name_written);
6388 /* An extra "@ " is added to the end of a macro expansion
6389 to prevent accidental token pasting. We prefer to avoid
6390 unneeded extra spaces (for the sake of cpp-using tools like
6391 imake). Here we remove the space if it is safe to do so. */
6393 llassert (pfile->buffer->rlimit != NULL);
6395 if (pfile->buffer->rlimit - pfile->buffer->cur >= 3
6396 && pfile->buffer->rlimit[-2] == '@'
6397 && pfile->buffer->rlimit[-1] == ' ')
6399 int c1 = pfile->buffer->rlimit[-3];
6400 int cl2 = cpplib_bufPeek (cppBuffer_prevBuffer (CPPBUFFER (pfile)));
6402 if (cl2 == EOF || !unsafe_chars ((char) c1, (char) cl2))
6403 pfile->buffer->rlimit -= 2;
6409 case ' ': case '\t': case '\v': case '\r':
6412 cppReader_putChar (pfile, c);
6413 c = cppReader_peekC (pfile);
6414 if (c == EOF || !is_hor_space[c])
6415 /*@loopbreak@*/ break;
6416 cppReader_forward (pfile, 1);
6421 c2 = cppReader_peekC (pfile);
6428 cppReader_putChar (pfile, c);
6429 if (pfile->only_seen_white == 0)
6430 pfile->only_seen_white = 1;
6432 output_line_command (pfile, 1, same_file);
6435 case '(': token = CPP_LPAREN; goto char1;
6436 case ')': token = CPP_RPAREN; goto char1;
6437 case '{': token = CPP_LBRACE; goto char1;
6438 case '}': token = CPP_RBRACE; goto char1;
6439 case ',': token = CPP_COMMA; goto char1;
6440 case ';': token = CPP_SEMICOLON; goto char1;
6446 pfile->only_seen_white = 0;
6447 cppReader_putChar (pfile, c);
6456 /* Parse an identifier starting with C. */
6459 parse_name (cppReader *pfile, int c)
6465 if (c == '\\' && cppReader_peekC (pfile) == '\n')
6467 cppReader_forward (pfile, 2);
6471 cppReader_forward (pfile, -1);
6475 if (c == '$' && cppReader_isPedantic (pfile))
6477 cppReader_pedwarnLit (pfile,
6478 cstring_makeLiteralTemp ("`$' in identifier"));
6481 cpplib_reserve(pfile, 2); /* One more for final NUL. */
6482 cppReader_putCharQ (pfile, c);
6483 c = cppReader_getC (pfile);
6489 cppReader_nullTerminateQ (pfile);
6492 /* The file_name_map structure holds a mapping of file names for a
6493 particular directory. This mapping is read from the file named
6494 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
6495 map filenames on a file system with severe filename restrictions,
6496 such as DOS. The format of the file name map file is just a series
6497 of lines with two tokens on each line. The first token is the name
6498 to map, and the second token is the actual name to use. */
6500 struct file_name_map
6502 struct file_name_map *map_next;
6507 /*@constant observer char *FILE_NAME_MAP_FILE*/
6508 #define FILE_NAME_MAP_FILE "header.gcc"
6510 /* Read a space delimited string of unlimited length from a stdio
6513 static cstring read_filename_string (int ch, /*:open:*/ FILE *f)
6519 set = alloc = dmalloc (len + 1);
6524 while ((ch = getc (f)) != EOF && ! is_space[ch])
6526 if (set - alloc == size_toInt (len))
6529 alloc = drealloc (alloc, len + 1);
6530 set = alloc + len / 2;
6531 /*@-branchstate@*/ }
6534 } /*@=branchstate@*/
6537 check (ungetc (ch, f) != EOF);
6539 return cstring_fromChars (alloc);
6542 /* This structure holds a linked list of file name maps, one per directory. */
6544 struct file_name_map_list
6546 struct file_name_map_list *map_list_next;
6547 cstring map_list_name;
6548 struct file_name_map *map_list_map;
6551 /* Read the file name map file for DIRNAME. */
6553 static struct file_name_map *
6554 read_name_map (cppReader *pfile, cstring dirname)
6556 struct file_name_map_list *map_list_ptr;
6560 for (map_list_ptr = CPPOPTIONS (pfile)->map_list;
6561 map_list_ptr != NULL;
6562 map_list_ptr = map_list_ptr->map_list_next)
6564 if (cstring_equal (map_list_ptr->map_list_name, dirname))
6566 return map_list_ptr->map_list_map;
6570 map_list_ptr = (struct file_name_map_list *) dmalloc (sizeof (*map_list_ptr));
6571 map_list_ptr->map_list_name = cstring_copy (dirname);
6572 map_list_ptr->map_list_map = NULL;
6574 name = cstring_copy (dirname);
6576 if (cstring_length (dirname) > 0)
6578 name = cstring_appendChar (name, CONNECTCHAR);
6581 name = cstring_concatFree1 (name, cstring_makeLiteralTemp (FILE_NAME_MAP_FILE));
6583 f = fileTable_openFile (context_fileTable (), name, "r");
6584 cstring_free (name);
6588 map_list_ptr->map_list_map = NULL;
6594 while ((ch = getc (f)) != EOF)
6597 struct file_name_map *ptr;
6604 from = read_filename_string (ch, f);
6605 while ((ch = getc (f)) != EOF && is_hor_space[ch])
6610 to = read_filename_string (ch, f);
6612 ptr = (struct file_name_map *) dmalloc (sizeof (*ptr));
6613 ptr->map_from = from;
6615 /* Make the real filename absolute. */
6616 if (cstring_length (to) > 1
6617 && osd_isConnectChar (cstring_firstChar (to)))
6623 ptr->map_to = cstring_copy (dirname);
6624 ptr->map_to = cstring_appendChar (ptr->map_to, CONNECTCHAR);
6625 ptr->map_to = cstring_concatFree (ptr->map_to, to);
6628 ptr->map_next = map_list_ptr->map_list_map;
6629 map_list_ptr->map_list_map = ptr;
6631 while ((ch = getc (f)) != '\n')
6635 /*@innerbreak@*/ break;
6640 assertSet (map_list_ptr->map_list_map);
6641 check (fileTable_closeFile (context_fileTable (),f) == 0);
6644 map_list_ptr->map_list_next = pfile->opts->map_list;
6645 pfile->opts->map_list = map_list_ptr;
6647 return map_list_ptr->map_list_map;
6650 /* Try to open include file FILENAME. SEARCHPTR is the directory
6651 being tried from the include file search path. This function maps
6652 filenames on file systems based on information read by
6656 open_include_file (cppReader *pfile,
6658 struct file_name_list *searchptr)
6660 char *filename = cstring_toCharsSafe (fname);
6661 struct file_name_map *map;
6665 cstring_markOwned (fname);
6667 cpp_setLocation (pfile);
6669 if (context_getFlag (FLG_NEVERINCLUDE))
6671 if (isHeaderFile (fname))
6673 return SKIP_INCLUDE;
6677 if ((searchptr != NULL) && ! searchptr->got_name_map)
6679 searchptr->name_map = read_name_map (pfile,
6680 !cstring_isEmpty (searchptr->fname)
6681 ? searchptr->fname :
6682 cstring_makeLiteralTemp ("."));
6683 searchptr->got_name_map = 1;
6686 /* First check the mapping for the directory we are using. */
6688 if ((searchptr != NULL)
6689 && (searchptr->name_map != NULL))
6693 if (!cstring_isEmpty (searchptr->fname))
6695 from += cstring_length (searchptr->fname) + 1;
6698 for (map = searchptr->name_map;
6700 map = map->map_next)
6702 if (cstring_equal (map->map_from, cstring_fromChars (from)))
6705 ** Found a match. Check if the file should be skipped
6708 if (cpp_skipIncludeFile (map->map_to))
6710 return SKIP_INCLUDE;
6714 return cpp_openIncludeFile (cstring_toCharsSafe (map->map_to));
6721 ** Try to find a mapping file for the particular directory we are
6722 ** looking in. Thus #include <sys/types.h> will look up sys/types.h
6723 ** in /usr/include/header.gcc and look up types.h in
6724 ** /usr/include/sys/header.gcc.
6727 p = strrchr (filename, CONNECTCHAR);
6734 if ((searchptr != NULL)
6735 && (cstring_isDefined (searchptr->fname))
6736 && (cstring_length (searchptr->fname) == p - filename)
6737 && !strncmp (cstring_toCharsSafe (searchptr->fname),
6739 size_fromInt (p - filename)))
6741 /* filename is in SEARCHPTR, which we've already checked. */
6743 if (cpp_skipIncludeFile (cstring_fromChars (filename)))
6745 return SKIP_INCLUDE;
6749 return cpp_openIncludeFile (filename);
6755 dir = mstring_copy (".");
6760 dir = (char *) dmalloc (size_fromInt (p - filename + 1));
6761 memcpy (dir, filename, size_fromInt (p - filename));
6762 dir[p - filename] = '\0';
6766 for (map = read_name_map (pfile, cstring_fromChars (dir));
6768 map = map->map_next)
6770 if (cstring_equal (map->map_from, cstring_fromChars (from)))
6774 if (cpp_skipIncludeFile (map->map_to))
6776 return SKIP_INCLUDE;
6780 return cpp_openIncludeFile (cstring_toCharsSafe (map->map_to));
6787 if (cpp_skipIncludeFile (cstring_fromChars (filename)))
6789 return SKIP_INCLUDE;
6793 return cpp_openIncludeFile (filename);
6797 /* Process the contents of include file FNAME, already open on descriptor F,
6799 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
6800 "system" include directories (as decided by the `is_system_include'
6802 DIRPTR is the link in the dir path through which this file was found,
6803 or 0 if the file name was absolute or via the current directory.
6804 Return 1 on success, 0 on failure.
6806 The caller is responsible for the cppReader_pushBuffer. */
6809 finclude (cppReader *pfile, int f,
6811 bool system_header_p,
6812 /*@dependent@*/ struct file_name_list *dirptr)
6818 cppBuffer *fp; /* For input stack frame */
6820 if (file_size_and_mode (f, &st_mode, &st_size) < 0)
6822 cppReader_perrorWithName (pfile, fname);
6823 check (close (f) == 0);
6824 (void) cppReader_popBuffer (pfile);
6830 fp = cppReader_getBuffer (pfile);
6832 /*@-temptrans@*/ /* fname shouldn't really be temp */
6833 fp->nominal_fname = fp->fname = fname;
6837 fp->system_header_p = system_header_p;
6840 fp->cleanup = cppReader_fileCleanup;
6842 if (S_ISREG (st_mode))
6845 fp->buf = (char *) dmalloc (st_size + 2);
6846 fp->alimit = fp->buf + st_size + 2;
6849 /* Read the file contents, knowing that st_size is an upper bound
6850 on the number of bytes we can read. */
6851 length = safe_read (f, fp->buf, size_toInt (st_size));
6852 fp->rlimit = fp->buf + length;
6853 if (length < 0) goto nope;
6855 else if (S_ISDIR (st_mode))
6857 cppReader_error (pfile,
6858 message ("Directory specified in #include: %s", fname));
6859 check (close (f) == 0);
6865 ** Cannot count its file size before reading.
6866 ** First read the entire file into heap and
6867 ** copy them into buffer on stack.
6870 size_t bsize = 2000;
6875 fp->buf = (char *) dmalloc (bsize + 2);
6878 i = safe_read (f, fp->buf + st_size, size_toInt (bsize - st_size));
6881 goto nope; /* error! */
6884 if (st_size != bsize)
6886 break; /* End of file */
6890 fp->buf = (char *) drealloc (fp->buf, bsize + 2);
6894 length = size_toInt (st_size);
6897 if ((length > 0 && fp->buf[length - 1] != '\n')
6898 /* Backslash-newline at end is not good enough. */
6899 || (length > 1 && fp->buf[length - 2] == '\\')) {
6900 fp->buf[length++] = '\n';
6903 fp->buf[length] = '\0';
6904 fp->rlimit = fp->buf + length;
6906 /* Close descriptor now, so nesting does not use lots of descriptors. */
6907 check (close (f) == 0);
6909 /* Must do this before calling trigraph_pcp, so that the correct file name
6910 will be printed in warning messages. */
6912 pfile->input_stack_listing_current = 0;
6917 cppReader_perrorWithName (pfile, fname);
6918 check (close (f) == 0);
6924 cpplib_init (cppReader *pfile)
6926 memset ((char *) pfile, 0, sizeof (*pfile));
6928 pfile->get_token = cpplib_getToken;
6929 pfile->token_buffer_size = 200;
6930 pfile->token_buffer = (char *) dmalloc (pfile->token_buffer_size);
6931 pfile->all_include_files = NULL;
6935 cppReader_setWritten (pfile, 0);
6937 pfile->system_include_depth = 0;
6938 pfile->max_include_len = 0;
6939 pfile->timebuf = NULL;
6940 pfile->only_seen_white = 1;
6942 pfile->buffer = cppReader_nullBuffer (pfile);
6946 cppReader_finish (/*@unused@*/ cppReader *pfile)
6951 /* Free resources used by PFILE.
6952 This is the cppReader 'finalizer' or 'destructor' (in C++ terminology). */
6955 cppCleanup (cppReader *pfile)
6957 while (CPPBUFFER (pfile) != cppReader_nullBuffer (pfile))
6959 (void) cppReader_popBuffer (pfile);
6962 if (pfile->token_buffer != NULL)
6964 sfree (pfile->token_buffer);
6965 pfile->token_buffer = NULL;
6968 while (pfile->if_stack != NULL)
6970 cppIfStackFrame *temp = pfile->if_stack;
6971 pfile->if_stack = temp->next;
6975 while (pfile->all_include_files != NULL)
6977 struct file_name_list *temp = pfile->all_include_files;
6978 pfile->all_include_files = temp->next;
6979 /*@-dependenttrans@*/
6980 cstring_free (temp->fname);
6981 /*@=dependenttrans@*/
6985 cppReader_hashCleanup ();
6989 ** Get the file-mode and data size of the file open on FD
6990 ** and store them in *MODE_POINTER and *SIZE_POINTER.
6994 file_size_and_mode (int fd, mode_t *mode_pointer, size_t *size_pointer)
6998 if (fstat (fd, &sbuf) < 0) {
7004 if (mode_pointer != NULL)
7006 *mode_pointer = sbuf.st_mode;
7009 if (size_pointer != NULL)
7011 *size_pointer = (size_t) sbuf.st_size;
7017 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
7018 retrying if necessary. Return a negative value if an error occurs,
7019 otherwise return the actual number of bytes read,
7020 which must be LEN unless end-of-file was reached. */
7022 static int safe_read (int desc, char *ptr, int len)
7028 # if defined (WIN32) || defined (OS2) && defined (__IBMC__)
7029 /*@-compdef@*/ /* ptr is an out parameter */
7030 int nchars = _read (desc, ptr, (unsigned) left);
7033 ssize_t nchars = read (desc, ptr, size_fromInt (left));
7042 return (int) nchars;
7056 /* Initialize PMARK to remember the current position of PFILE. */
7059 parseSetMark (struct parse_marker *pmark, cppReader *pfile)
7061 cppBuffer *pbuf = cppReader_getBuffer (pfile);
7063 pmark->next = pbuf->marks;
7065 pbuf->marks = pmark;
7069 pmark->position = pbuf->cur - pbuf->buf;
7072 /* Cleanup PMARK - we no longer need it. */
7074 void parseClearMark (struct parse_marker *pmark)
7076 struct parse_marker **pp = &pmark->buf->marks;
7078 for (; ; pp = &(*pp)->next)
7080 llassert (*pp != NULL);
7081 if (*pp == pmark) break;
7087 /* Backup the current position of PFILE to that saved in PMARK. */
7090 parseGotoMark (struct parse_marker *pmark, cppReader *pfile)
7092 cppBuffer *pbuf = cppReader_getBuffer (pfile);
7094 if (pbuf != pmark->buf)
7096 cpp_setLocation (pfile);
7097 llfatalbug (cstring_makeLiteral ("Internal error parseGotoMark"));
7100 llassert (pbuf->buf != NULL);
7101 pbuf->cur = pbuf->buf + pmark->position;
7104 /* Reset PMARK to point to the current position of PFILE. (Same
7105 as parseClearMark (PMARK), parseSetMark (PMARK, PFILE) but faster. */
7108 parseMoveMark (struct parse_marker *pmark, cppReader *pfile)
7110 cppBuffer *pbuf = cppReader_getBuffer (pfile);
7112 if (pbuf != pmark->buf)
7114 cpp_setLocation (pfile);
7115 llfatalerror (cstring_makeLiteral ("Internal error parseMoveMark"));
7118 pmark->position = pbuf->cur - pbuf->buf;
7121 void cpplib_initializeReader (cppReader *pfile) /* Must be done after library is loaded. */
7123 struct cppOptions *opts = CPPOPTIONS (pfile);
7126 /* The code looks at the defaults through this pointer, rather than through
7127 the constant structure above. This pointer gets changed if an environment
7128 variable specifies other defaults. */
7130 struct default_include *include_defaults = include_defaults_array;
7132 /* Add dirs from INCLUDEPATH_VAR after dirs from -I. */
7133 /* There seems to be confusion about what CPATH should do,
7134 so for the moment it is not documented. */
7135 /* Some people say that CPATH should replace the standard include dirs,
7136 but that seems pointless: it comes before them, so it overrides them
7139 xp = osd_getEnvironmentVariable (INCLUDEPATH_VAR);
7141 if (cstring_isDefined (xp) && !opts->no_standard_includes)
7143 path_include (pfile, cstring_toCharsSafe (xp));
7146 /* Now that dollars_in_ident is known, initialize is_idchar. */
7147 initialize_char_syntax (opts);
7149 /* CppReader_Install __LINE__, etc. Must follow initialize_char_syntax
7150 and option processing. */
7152 initialize_builtins (pfile);
7154 /* Do standard #defines and assertions
7155 that identify system and machine type. */
7157 if (!opts->inhibit_predefs) {
7158 char *p = (char *) dmalloc (strlen (predefs) + 1);
7159 strcpy (p, predefs);
7165 while (*p == ' ' || *p == '\t')
7170 /* Handle -D options. */
7171 if (p[0] == '-' && p[1] == 'D')
7175 while (*p && *p != ' ' && *p != '\t')
7185 if (opts->debug_output)
7187 output_line_command (pfile, 0, same_file);
7190 cppReader_define (pfile, q);
7192 while (*p == ' ' || *p == '\t')
7206 opts->done_initializing = 1;
7208 { /* Read the appropriate environment variable and if it exists
7209 replace include_defaults with the listed path. */
7213 int win32_buf_size = 0; /* memory we need to allocate */
7216 if (opts->cplusplus)
7218 epath = getenv ("CPLUS_INCLUDE_PATH");
7222 epath = getenv ("C_INCLUDE_PATH");
7226 ** If the environment var for this language is set,
7227 ** add to the default list of include directories.
7230 if (epath != NULL) {
7231 char *nstore = (char *) dmalloc (strlen (epath) + 2);
7233 char *startp, *endp;
7236 /* if we have a posix path list, convert to win32 path list */
7237 if (cygwin32_posix_path_list_p (epath))
7239 win32_buf_size = cygwin32_posix_to_win32_path_list_buf_size (epath);
7240 win32epath = (char *) dmalloc /*@i4@*/ (win32_buf_size);
7241 cygwin32_posix_to_win32_path_list (epath, win32epath);
7245 for (num_dirs = 1, startp = epath; *startp; startp++)
7247 if (*startp == PATH_SEPARATOR)
7253 = (struct default_include *) dmalloc ((num_dirs
7254 * sizeof (struct default_include))
7255 + sizeof (include_defaults_array));
7258 startp = endp = epath;
7261 /* Handle cases like c:/usr/lib:d:/gcc/lib */
7262 if ((*endp == PATH_SEPARATOR) || *endp == 0)
7264 strncpy (nstore, startp, size_fromInt (endp - startp));
7267 strcpy (nstore, ".");
7271 nstore[endp-startp] = '\0';
7274 include_defaults[num_dirs].fname = cstring_fromCharsNew (nstore);
7275 include_defaults[num_dirs].cplusplus = opts->cplusplus;
7276 include_defaults[num_dirs].cxx_aware = 1;
7283 endp = startp = endp + 1;
7290 /* Put the usual defaults back in at the end. */
7291 memcpy ((char *) &include_defaults[num_dirs],
7292 (char *) include_defaults_array,
7293 sizeof (include_defaults_array));
7296 /*@-branchstate@*/ } /*@=branchstate@*/
7299 cppReader_appendIncludeChain (pfile, opts->before_system,
7300 opts->last_before_system);
7301 opts->first_system_include = opts->before_system;
7303 /* Unless -fnostdinc,
7304 tack on the standard include file dirs to the specified list */
7305 if (!opts->no_standard_includes) {
7306 struct default_include *p = include_defaults;
7307 char *specd_prefix = opts->include_prefix;
7308 char *default_prefix = mstring_copy (GCC_INCLUDE_DIR);
7309 int default_len = 0;
7311 /* Remove the `include' from /usr/local/lib/gcc.../include. */
7312 if (default_prefix != NULL) {
7313 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
7314 default_len = strlen (default_prefix) - 7;
7315 default_prefix[default_len] = 0;
7319 /* Search "translated" versions of GNU directories.
7320 These have /usr/local/lib/gcc... replaced by specd_prefix. */
7321 if (specd_prefix != 0 && default_len != 0)
7322 for (p = include_defaults; p->fname != NULL; p++) {
7323 /* Some standard dirs are only for C++. */
7325 || (opts->cplusplus && !opts->no_standard_cplusplus_includes)) {
7326 /* Does this dir start with the prefix? */
7327 if (!strncmp (cstring_toCharsSafe (p->fname), default_prefix,
7328 size_fromInt (default_len)))
7330 /* Yes; change prefix and add to search list. */
7331 struct file_name_list *nlist
7332 = (struct file_name_list *) dmalloc (sizeof (*nlist));
7333 size_t this_len = strlen (specd_prefix) + cstring_length (p->fname) - default_len;
7334 char *str = (char *) dmalloc (this_len + 1);
7335 strcpy (str, specd_prefix);
7336 strcat (str, cstring_toCharsSafe (p->fname) + default_len);
7339 nlist->fname = cstring_fromChars (str);
7340 nlist->control_macro = 0;
7341 nlist->c_system_include_path = !p->cxx_aware;
7342 nlist->got_name_map = 0;
7344 cppReader_addIncludeChain (pfile, nlist);
7345 if (opts->first_system_include == 0)
7347 opts->first_system_include = nlist;
7353 /* Search ordinary names for GNU include directories. */
7355 for (p = include_defaults; p->fname != NULL; p++)
7357 /* Some standard dirs are only for C++. */
7359 || (opts->cplusplus && !opts->no_standard_cplusplus_includes))
7361 struct file_name_list *nlist
7362 = (struct file_name_list *) dmalloc (sizeof (*nlist));
7363 nlist->control_macro = 0;
7364 nlist->c_system_include_path = !p->cxx_aware;
7365 nlist->fname = p->fname;
7366 nlist->got_name_map = 0;
7369 cppReader_addIncludeChain (pfile, nlist);
7371 if (opts->first_system_include == 0)
7373 opts->first_system_include = nlist;
7377 sfree (default_prefix);
7380 /* Tack the after_include chain at the end of the include chain. */
7381 cppReader_appendIncludeChain (pfile, opts->after_include,
7382 opts->last_after_include);
7384 if (opts->first_system_include == 0)
7386 opts->first_system_include = opts->after_include;
7389 /* With -v, print the list of dirs to search. */
7390 if (opts->verbose) {
7391 struct file_name_list *p;
7392 fprintf (stderr, "#include \"...\" search starts here:\n");
7394 for (p = opts->include; p != NULL; p = p->next) {
7395 if (p == opts->first_bracket_include)
7396 fprintf (stderr, "#include <...> search starts here:\n");
7398 fprintf (stderr, " %s\n", cstring_toCharsSafe (p->fname));
7400 fprintf (stderr, "End of search list.\n");
7404 int cppReader_startProcess (cppReader *pfile, cstring fname)
7408 struct cppOptions *opts = CPPOPTIONS (pfile);
7410 fp = cppReader_pushBuffer (pfile, NULL, 0);
7417 if (opts->in_fname == NULL)
7419 opts->in_fname = cstring_makeLiteralTemp ("");
7422 fp->fname = opts->in_fname;
7423 fp->nominal_fname = fp->fname;
7426 /* Copy the entire contents of the main input file into
7427 the stacked input buffer previously allocated for it. */
7429 if (cstring_isEmpty (fname))
7431 fname = cstring_makeLiteralTemp ("");
7434 else if ((f = open (cstring_toCharsSafe (fname), O_RDONLY, 0666)) < 0)
7436 cppReader_error (pfile,
7437 message ("Error opening %s for reading: %s",
7438 fname, lldecodeerror (errno)));
7447 if (finclude (pfile, f, fname, 0, NULL))
7449 output_line_command (pfile, 0, same_file);
7455 static /*@exposed@*/ /*@null@*/ cppBuffer *cppReader_getBuffer (cppReader *pfile)
7457 return pfile->buffer;
7460 /*@exposed@*/ cppBuffer *cppReader_getBufferSafe (cppReader *pfile)
7462 llassert (pfile->buffer != NULL);
7463 return pfile->buffer;
7466 /*@exposed@*/ char *cppLineBase (cppBuffer *buf)
7468 llassert (buf->buf != NULL);
7469 return (buf->buf + buf->line_base);
7472 int cpplib_bufPeek (cppBuffer *buf)
7474 if (buf->cur == NULL || buf->rlimit == NULL) {
7478 if (buf->cur < buf->rlimit) {
7485 bool cppBuffer_isMacro (cppBuffer *buf)
7489 return (buf->cleanup == cppReader_macroCleanup);
7496 ** Returns true if the macro should be checked, false
7497 ** if it should be expanded normally.
7500 static bool notparseable = FALSE; /* preceeded by @notparseable@ */
7501 static bool notfunction = FALSE; /* preceeded by @notfunction@ */
7502 static bool expectiter = FALSE; /* preceeded by @iter@ */
7503 static bool expectenditer = FALSE; /* second after @iter@ */
7504 static bool expectfunction = FALSE; /* preceeded by @function@ */
7505 static bool expectconstant = FALSE; /* preceeded by @constant@ */
7506 static bool expectmacro = FALSE; /* preceeded by notfunction or notparseable */
7508 static void cpp_setLocation (cppReader *pfile)
7513 if (pfile->buffer != NULL)
7515 if (cstring_isDefined (cppReader_getBuffer (pfile)->nominal_fname))
7517 cstring fname = cppReader_getBuffer (pfile)->nominal_fname;
7519 DPRINTF (("Looking up: %s", fname));
7521 if (fileTable_exists (context_fileTable (), fname))
7523 fid = fileTable_lookup (context_fileTable (), fname);
7527 DPRINTF (("Trying %s", cppReader_getBuffer (pfile)->fname));
7529 fid = fileTable_lookup (context_fileTable (),
7530 cppReader_getBuffer (pfile)->fname);
7535 fid = fileTable_lookup (context_fileTable (),
7536 cppReader_getBuffer (pfile)->fname);
7539 line = cppReader_getBuffer (pfile)->lineno;
7540 fileloc_free (g_currentloc);
7542 if (fileId_isValid (fid))
7544 g_currentloc = fileloc_create (fid, line, 1);
7548 g_currentloc = fileloc_createBuiltin ();
7553 fileloc_free (g_currentloc);
7554 g_currentloc = fileloc_createBuiltin ();
7558 static bool cpp_shouldCheckMacro (cppReader *pfile, char *p) /*@modifies p*/
7560 bool checkmacro = FALSE;
7561 bool hasParams = FALSE;
7562 bool noexpand = FALSE;
7566 cpp_setLocation (pfile);
7568 DPRINTF (("Should check macro? %s", p));
7570 if (expectiter || expectconstant || expectenditer)
7575 expectenditer = TRUE;
7580 expectconstant = FALSE;
7581 expectenditer = FALSE;
7584 if (notfunction || notparseable)
7586 notfunction = FALSE;
7587 notparseable = FALSE;
7596 llassert (*p == '#');
7599 while (*p == ' ' || *p == '\t')
7604 llassert (*p == 'd'); /* define starts */
7608 while (*p == ' ' || *p == '\t')
7613 sname = cstring_fromChars (p);
7614 DPRINTF (("Check macro: %s", sname));
7616 while (((c = *p) != ' ')
7617 && c != '\0' && c != '('
7618 && c != '\t' && c != '\\' && c != '\n'
7624 hasParams = (c == '(');
7629 notparseable = FALSE;
7631 else if (notfunction || fileloc_isStandardLib (g_currentloc))
7633 DPRINTF (("Clear notfunction"));
7634 notfunction = FALSE;
7649 if (usymtab_existsReal (sname))
7651 uentry ue = usymtab_lookup (sname);
7653 DPRINTF (("Lookup macro: %s", uentry_unparse (ue)));
7655 if (fileloc_isPreproc (uentry_whereLast (ue)))
7661 if (uentry_isSpecified (ue))
7663 checkmacro = context_getFlag (FLG_SPECMACROS);
7669 checkmacro = context_getFlag (FLG_LIBMACROS)
7670 || context_getFlag (FLG_FCNMACROS);
7678 DPRINTF (("Macro doesn't exist: %s", bool_unparse (checkmacro)));
7680 if (fileloc_isSystemFile (g_currentloc)
7681 && context_getFlag (FLG_SYSTEMDIREXPAND))
7683 ; /* don't check this macro */
7684 DPRINTF (("Don't check 1"));
7692 DPRINTF (("Has params..."));
7694 if (context_getFlag (FLG_FCNMACROS))
7696 if (usymtab_exists (sname))
7699 ** only get here is macro is redefined
7700 ** error reported elsewhere
7703 DPRINTF (("It exists!"));
7708 ** We make it a forward function, since it might be declared elsewhere.
7709 ** After all headers have been processed, we should check the forward
7713 fileloc loc = fileloc_makePreproc (g_currentloc);
7715 /* the line is off-by-one, since the newline was already read */
7720 expectfunction = FALSE;
7723 le = uentry_makeForwardFunction (sname,
7724 typeId_invalid, loc);
7730 /* Do not define here! */
7732 (void) usymtab_addEntry (le);
7736 DPRINTF (("Check: TRUE"));
7740 DPRINTF (("Flag FCN_MACROS not set!"));
7745 DPRINTF (("No params"));
7747 if (context_getFlag (FLG_CONSTMACROS))
7749 bool nocontent = FALSE;
7762 ** Check if there is nothing after the define.
7765 while ((*rest) != '\0' && isspace (*rest))
7772 nocontent = TRUE; /* empty macro, don't check */
7777 if (usymtab_exists (sname))
7783 fileloc loc = fileloc_makePreproc (g_currentloc);
7784 DPRINTF (("Make constant: %s", sname));
7785 le = uentry_makeMacroConstant (sname, ctype_unknown, loc);
7786 (void) usymtab_addEntry (le);
7789 checkmacro = !nocontent;
7794 if (checkmacro && usymtab_existsType (sname))
7796 DPRINTF (("Making false..."));
7798 ppllerror (message ("Specified type implemented as macro: %s", sname));
7808 if (usymtab_exists (sname))
7810 uentry ue = usymtab_lookupExpose (sname);
7811 fileloc tloc = fileloc_makePreproc (g_currentloc);
7813 uentry_setDefined (ue, tloc);
7814 fileloc_free (tloc);
7815 uentry_setUsed (ue, fileloc_undefined);
7819 fileloc tloc = fileloc_makePreproc (g_currentloc);
7820 uentry ue = uentry_makeExpandedMacro (sname, tloc);
7821 DPRINTF (("Make expanded macro: %s", sname));
7822 DPRINTF (("Not in symbol table: %s", sname));
7824 (void) usymtab_addGlobalEntry (ue);
7825 fileloc_free (tloc);
7830 DPRINTF (("Returning: %s", bool_unparse (checkmacro)));
7834 static enum cpp_token
7835 cpp_handleComment (cppReader *pfile, struct parse_marker *smark)
7837 cppBuffer *pbuf = cppReader_getBuffer (pfile);
7840 bool eliminateComment = FALSE;
7842 llassert (pbuf->buf != NULL);
7844 start = pbuf->buf + smark->position;
7846 llassert (pbuf->cur != NULL);
7847 len = pbuf->cur - start;
7850 && start[1] == context_getCommentMarkerChar ())
7854 char *scomment = start + 2;
7855 char savec = start[len];
7857 start[0] = BEFORE_COMMENT_MARKER[0];
7858 start[1] = BEFORE_COMMENT_MARKER[1];
7860 llassert (start[len - 2] == '*');
7861 start[len - 2] = AFTER_COMMENT_MARKER[0];
7863 llassert (start[len - 1] == '/');
7864 start[len - 1] = AFTER_COMMENT_MARKER[1];
7866 cpplib_reserve(pfile, size_fromInt (1 + len));
7867 cppReader_putCharQ (pfile, c);
7869 cpp_setLocation (pfile);
7873 if (mstring_containsString (scomment, "/*"))
7875 (void) cppoptgenerror
7877 message ("Comment starts inside syntactic comment: %s",
7878 cstring_fromChars (scomment)),
7884 if (mstring_equalPrefix (scomment, "ignore"))
7886 if (!context_getFlag (FLG_NOCOMMENTS))
7888 context_enterSuppressRegion ();
7891 else if (mstring_equalPrefix (scomment, "end"))
7893 if (!context_getFlag (FLG_NOCOMMENTS))
7895 context_exitSuppressRegion ();
7898 else if (mstring_equalPrefix (scomment, "notparseable"))
7900 notparseable = TRUE;
7902 eliminateComment = TRUE;
7904 else if (mstring_equalPrefix (scomment, "notfunction"))
7908 eliminateComment = TRUE;
7910 else if (mstring_equalPrefix (scomment, "iter"))
7914 else if (mstring_equalPrefix (scomment, "function"))
7916 expectfunction = TRUE;
7918 else if (mstring_equalPrefix (scomment, "constant"))
7920 expectconstant = TRUE;
7924 char sChar = *scomment;
7930 char *rest = scomment + 1;
7932 if (mstring_equalPrefix (rest, "commentchar"))
7934 eliminateComment = TRUE;
7938 ppllerror (cstring_makeLiteral
7939 ("Cannot restore commentchar"));
7943 char *next = scomment + 12; /* strlen commentchar = 12 */
7945 if (*next != ' ' && *next != '\t' && *next != '\n')
7949 ("Syntactic commentchar comment is not followed by a "
7950 "whitespace character: %c",
7955 char cchar = *(next + 1);
7960 (cstring_makeLiteral
7961 ("Cannot set commentchar to NUL"));
7965 context_setCommentMarkerChar (cchar);
7966 /* setComment = TRUE; */
7971 else if (mstring_equalPrefix (scomment, "nestcomment"))
7973 /* fix from Mike Miller <MikeM@xata.com> */
7974 context_fileSetFlag (FLG_NESTCOMMENT,
7975 ynm_fromCodeChar (sChar));
7977 else if (mstring_equalPrefix (rest, "namechecks"))
7979 context_fileSetFlag (FLG_NAMECHECKS,
7980 ynm_fromCodeChar (sChar));
7982 else if (mstring_equalPrefix (rest, "macroredef"))
7984 context_fileSetFlag (FLG_MACROREDEF,
7985 ynm_fromCodeChar (sChar));
7987 else if (mstring_equalPrefix (rest, "usevarargs"))
7989 context_fileSetFlag (FLG_USEVARARGS,
7990 ynm_fromCodeChar (sChar));
7992 else if (mstring_equalPrefix (rest, "nextlinemacros"))
7994 context_fileSetFlag (FLG_MACRONEXTLINE,
7995 ynm_fromCodeChar (sChar));
7997 else if (mstring_equalPrefix (rest, "allmacros")
7998 || mstring_equalPrefix (rest, "fcnmacros")
7999 || mstring_equalPrefix (rest, "constmacros"))
8003 if (mstring_equalPrefix (rest, "allmacros"))
8007 else if (mstring_equalPrefix (rest, "fcnmacros"))
8013 llassert (mstring_equalPrefix (rest, "constmacros"));
8014 fl = FLG_CONSTMACROS;
8018 context_fileSetFlag (fl, ynm_fromCodeChar (sChar));
8019 notfunction = FALSE;
8032 if (eliminateComment)
8037 /* Replaces comment char's in start with spaces */
8039 for (i = 2; i < len - 2; i++)
8041 if (start[i] == BEFORE_COMMENT_MARKER[0]
8042 || start[i] == BEFORE_COMMENT_MARKER[1]
8043 || start[i] == context_getCommentMarkerChar ())
8049 cppReader_putStrN (pfile, start, size_fromInt (len));
8050 parseClearMark (smark);
8060 ** Output the comment as all spaces so line/column
8061 ** in output file is still correct.
8065 cstring lintcomment = cstring_undefined;
8067 if (context_getFlag (FLG_LINTCOMMENTS))
8069 if (mstring_equalPrefix (start, "*NOTREACHED*/"))
8071 lintcomment = cstring_makeLiteralTemp ("l_notreach");
8073 else if (mstring_equalPrefix (start, "*PRINTFLIKE*/"))
8075 lintcomment = cstring_makeLiteralTemp ("l_printfli");
8077 else if (mstring_equalPrefix (start, "*FALLTHROUGH*/"))
8079 lintcomment = cstring_makeLiteralTemp ("l_fallthrou");
8081 else if (mstring_equalPrefix (start, "*ARGSUSED*/"))
8083 lintcomment = cstring_makeLiteralTemp ("l_argsus");
8085 else if (mstring_equalPrefix (start, "*FALLTHRU*/"))
8087 lintcomment = cstring_makeLiteralTemp ("l_fallth");
8091 lintcomment = cstring_undefined;
8096 lintcomment = cstring_undefined;
8099 if (cstring_isDefined (lintcomment))
8101 c = BEFORE_COMMENT_MARKER[0];
8102 start[0] = BEFORE_COMMENT_MARKER[1];
8104 llassert (cstring_length (lintcomment) == len - 3);
8106 for (i = 1; i < len - 2; i++)
8108 start[i] = cstring_getChar (lintcomment, i);
8111 start[len - 2] = AFTER_COMMENT_MARKER[0];
8112 start[len - 1] = AFTER_COMMENT_MARKER[1];
8116 /* Replaces char's in start with spaces */
8117 for (i = 0; i < len; i++)
8121 && start[i + 1] == '*') {
8122 (void) cppoptgenerror (FLG_NESTCOMMENT,
8123 message ("Comment starts inside comment"),
8127 if (start[i] != '\n')
8134 cpplib_reserve (pfile, size_fromInt (1 + len));
8135 cppReader_putCharQ (pfile, c);
8136 cppReader_putStrN (pfile, start, size_fromInt (len));
8137 parseClearMark (smark);
8143 static int cpp_openIncludeFile (char *filename)
8145 int res = open (filename, O_RDONLY, 0666);
8147 /* evans 2001-08-23: was (res) - open returns -1 on error! reported by Robin Watts */
8150 if (!fileTable_exists (context_fileTable (),
8151 cstring_fromChars (filename)))
8153 if (fileloc_isXHFile (g_currentloc))
8156 ** Files includes by XH files are also XH files
8159 (void) fileTable_addXHFile (context_fileTable (),
8160 cstring_fromChars (filename));
8164 (void) fileTable_addHeaderFile (context_fileTable (),
8165 cstring_fromChars (filename));
8170 DPRINTF (("File already exists: %s", filename));
8177 static bool cpp_skipIncludeFile (cstring fname)
8179 if (context_isSystemDir (fname))
8181 DPRINTF (("System dir: %s", fname));
8183 if (lcllib_isSkipHeader (fname))
8185 DPRINTF (("Skip include TRUE: %s", fname));
8189 if (context_getFlag (FLG_SKIPSYSHEADERS))
8191 DPRINTF (("Skip include TRUE: %s", fname));
8196 if (context_getFlag (FLG_SINGLEINCLUDE))
8198 fname = removePreDirs (fname);
8200 # if defined (WIN32) || defined (OS2)
8201 cstring_replaceAll (fname, '\\', '/');
8204 if (fileTable_exists (context_fileTable (), fname))
8206 DPRINTF (("Skip include TRUE: %s", fname));
8211 DPRINTF (("Skip include FALSE: %s", fname));
8215 static int cpp_peekN (cppReader *pfile, int n)
8217 cppBuffer *buf = cppReader_getBuffer (pfile);
8219 llassert (buf->cur != NULL);
8221 return (buf->rlimit - buf->cur >= (n)
8226 cppBuffer *cppBuffer_prevBuffer (cppBuffer *buf)
8231 void cppBuffer_forward (cppBuffer *buf, int n)
8233 llassert (buf->cur != NULL);