1 /* Lexical analyzer for C and Objective C.
2 Copyright (C) 1987, 88, 89, 92, 94-99, 2000 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
38 /* MULTIBYTE_CHARS support only works for native compilers.
39 ??? Ideally what we want is to model widechar support after
40 the current floating point support. */
42 #undef MULTIBYTE_CHARS
45 #ifdef MULTIBYTE_CHARS
48 #endif /* MULTIBYTE_CHARS */
49 #ifndef GET_ENVIRONMENT
50 #define GET_ENVIRONMENT(ENV_VALUE,ENV_NAME) ((ENV_VALUE) = getenv (ENV_NAME))
55 extern cpp_reader parse_in;
56 extern cpp_options parse_options;
58 /* Stream for reading from the input file. */
62 extern void yyprint PARAMS ((FILE *, int, YYSTYPE));
64 /* The elements of `ridpointers' are identifier nodes
65 for the reserved type names and storage classes.
66 It is indexed by a RID_... value. */
67 tree ridpointers[(int) RID_MAX];
69 /* Cause the `yydebug' variable to be defined. */
73 extern unsigned char *yy_cur, *yy_lim;
74 extern enum cpp_token cpp_token;
76 extern int yy_get_token ();
78 #define GETC() (yy_cur < yy_lim ? *yy_cur++ : yy_get_token ())
79 #define UNGETC(c) ((c) == EOF ? 0 : yy_cur--)
81 #else /* ! USE_CPPLIB */
83 #define GETC() getch ()
84 #define UNGETC(c) put_back (c)
86 struct putback_buffer {
92 static struct putback_buffer putback = {NULL, 0, -1};
94 static inline int getch PARAMS ((void));
99 if (putback.index != -1)
101 int ch = putback.buffer[putback.index];
105 return getc (finput);
108 static inline void put_back PARAMS ((int));
116 if (putback.index == putback.buffer_size - 1)
118 putback.buffer_size += 16;
119 putback.buffer = xrealloc (putback.buffer, putback.buffer_size);
121 putback.buffer[++putback.index] = ch;
124 #endif /* ! USE_CPPLIB */
128 /* the declaration found for the last IDENTIFIER token read in.
129 yylex must look this up to detect typedefs, which get token type TYPENAME,
130 so it is left around in case the identifier is not a typedef but is
131 used in a context which makes it a reference to a variable. */
134 /* Nonzero enables objc features. */
136 int doing_objc_thang;
140 /* File used for outputting assembler code. */
141 extern FILE *asm_out_file;
143 #undef WCHAR_TYPE_SIZE
144 #define WCHAR_TYPE_SIZE TYPE_PRECISION (wchar_type_node)
146 /* Number of bytes in a wide character. */
147 #define WCHAR_BYTES (WCHAR_TYPE_SIZE / BITS_PER_UNIT)
149 static int maxtoken; /* Current nominal length of token buffer. */
150 char *token_buffer; /* Pointer to token buffer.
151 Actual allocated length is maxtoken + 2.
152 This is not static because objc-parse.y uses it. */
154 static int indent_level; /* Number of { minus number of }. */
156 /* Nonzero tells yylex to ignore \ in string constants. */
157 static int ignore_escape_flag;
159 /* Nonzero if end-of-file has been seen on input. */
160 static int end_of_file;
162 #ifdef HANDLE_GENERIC_PRAGMAS
163 static int handle_generic_pragma PARAMS ((int));
164 #endif /* HANDLE_GENERIC_PRAGMAS */
165 static int whitespace_cr PARAMS ((int));
166 static int skip_white_space PARAMS ((int));
167 static char *extend_token_buffer PARAMS ((const char *));
168 static int readescape PARAMS ((int *));
169 static void parse_float PARAMS ((PTR));
170 static void extend_token_buffer_to PARAMS ((int));
171 static int read_line_number PARAMS ((int *));
173 /* Do not insert generated code into the source, instead, include it.
174 This allows us to build gcc automatically even for targets that
175 need to add or modify the reserved keyword lists. */
178 /* Return something to represent absolute declarators containing a *.
179 TARGET is the absolute declarator that the * contains.
180 TYPE_QUALS is a list of modifiers such as const or volatile
181 to apply to the pointer type, represented as identifiers.
183 We return an INDIRECT_REF whose "contents" are TARGET
184 and whose type is the modifier list. */
187 make_pointer_declarator (type_quals, target)
188 tree type_quals, target;
190 return build1 (INDIRECT_REF, type_quals, target);
194 forget_protocol_qualifiers ()
196 int i, n = sizeof wordlist / sizeof (struct resword);
198 for (i = 0; i < n; i++)
199 if ((int) wordlist[i].rid >= (int) RID_IN
200 && (int) wordlist[i].rid <= (int) RID_ONEWAY)
201 wordlist[i].name = "";
205 remember_protocol_qualifiers ()
207 int i, n = sizeof wordlist / sizeof (struct resword);
209 for (i = 0; i < n; i++)
210 if (wordlist[i].rid == RID_IN)
211 wordlist[i].name = "in";
212 else if (wordlist[i].rid == RID_OUT)
213 wordlist[i].name = "out";
214 else if (wordlist[i].rid == RID_INOUT)
215 wordlist[i].name = "inout";
216 else if (wordlist[i].rid == RID_BYCOPY)
217 wordlist[i].name = "bycopy";
218 else if (wordlist[i].rid == RID_BYREF)
219 wordlist[i].name = "byref";
220 else if (wordlist[i].rid == RID_ONEWAY)
221 wordlist[i].name = "oneway";
225 init_parse (filename)
229 /* Open input file. */
230 if (filename == 0 || !strcmp (filename, "-"))
236 finput = fopen (filename, "r");
238 pfatal_with_name (filename);
240 #ifdef IO_BUFFER_SIZE
241 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE);
243 #else /* !USE_CPPLIB */
244 parse_in.show_column = 1;
245 if (! cpp_start_read (&parse_in, filename))
248 if (filename == 0 || !strcmp (filename, "-"))
251 /* cpp_start_read always puts at least one line directive into the
252 token buffer. We must arrange to read it out here. */
253 yy_cur = parse_in.token_buffer;
254 yy_lim = CPP_PWRITTEN (&parse_in);
255 cpp_token = CPP_DIRECTIVE;
268 cpp_finish (&parse_in);
269 errorcount += parse_in.errors;
278 /* Make identifier nodes long enough for the language-specific slots. */
279 set_identifier_size (sizeof (struct lang_identifier));
281 /* Start it at 0, because check_newline is called at the very beginning
282 and will increment it to 1. */
285 #ifdef MULTIBYTE_CHARS
286 /* Change to the native locale for multibyte conversions. */
287 setlocale (LC_CTYPE, "");
288 GET_ENVIRONMENT (literal_codeset, "LANG");
292 token_buffer = (char *) xmalloc (maxtoken + 2);
294 ridpointers[(int) RID_INT] = get_identifier ("int");
295 ridpointers[(int) RID_CHAR] = get_identifier ("char");
296 ridpointers[(int) RID_VOID] = get_identifier ("void");
297 ridpointers[(int) RID_FLOAT] = get_identifier ("float");
298 ridpointers[(int) RID_DOUBLE] = get_identifier ("double");
299 ridpointers[(int) RID_SHORT] = get_identifier ("short");
300 ridpointers[(int) RID_LONG] = get_identifier ("long");
301 ridpointers[(int) RID_UNSIGNED] = get_identifier ("unsigned");
302 ridpointers[(int) RID_SIGNED] = get_identifier ("signed");
303 ridpointers[(int) RID_INLINE] = get_identifier ("inline");
304 ridpointers[(int) RID_CONST] = get_identifier ("const");
305 ridpointers[(int) RID_RESTRICT] = get_identifier ("restrict");
306 ridpointers[(int) RID_VOLATILE] = get_identifier ("volatile");
307 ridpointers[(int) RID_AUTO] = get_identifier ("auto");
308 ridpointers[(int) RID_STATIC] = get_identifier ("static");
309 ridpointers[(int) RID_EXTERN] = get_identifier ("extern");
310 ridpointers[(int) RID_TYPEDEF] = get_identifier ("typedef");
311 ridpointers[(int) RID_REGISTER] = get_identifier ("register");
312 ridpointers[(int) RID_ITERATOR] = get_identifier ("iterator");
313 ridpointers[(int) RID_COMPLEX] = get_identifier ("complex");
314 ridpointers[(int) RID_ID] = get_identifier ("id");
315 ridpointers[(int) RID_IN] = get_identifier ("in");
316 ridpointers[(int) RID_OUT] = get_identifier ("out");
317 ridpointers[(int) RID_INOUT] = get_identifier ("inout");
318 ridpointers[(int) RID_BYCOPY] = get_identifier ("bycopy");
319 ridpointers[(int) RID_BYREF] = get_identifier ("byref");
320 ridpointers[(int) RID_ONEWAY] = get_identifier ("oneway");
321 forget_protocol_qualifiers();
323 /* Some options inhibit certain reserved words.
324 Clear those words out of the hash table so they won't be recognized. */
325 #define UNSET_RESERVED_WORD(STRING) \
326 do { struct resword *s = is_reserved_word (STRING, sizeof (STRING) - 1); \
327 if (s) s->name = ""; } while (0)
329 if (! doing_objc_thang)
330 UNSET_RESERVED_WORD ("id");
332 if (flag_traditional)
334 UNSET_RESERVED_WORD ("const");
335 UNSET_RESERVED_WORD ("restrict");
336 UNSET_RESERVED_WORD ("volatile");
337 UNSET_RESERVED_WORD ("typeof");
338 UNSET_RESERVED_WORD ("signed");
339 UNSET_RESERVED_WORD ("inline");
340 UNSET_RESERVED_WORD ("iterator");
341 UNSET_RESERVED_WORD ("complex");
343 else if (!flag_isoc99)
344 UNSET_RESERVED_WORD ("restrict");
348 UNSET_RESERVED_WORD ("asm");
349 UNSET_RESERVED_WORD ("typeof");
350 UNSET_RESERVED_WORD ("inline");
351 UNSET_RESERVED_WORD ("iterator");
352 UNSET_RESERVED_WORD ("complex");
357 reinit_parse_for_function ()
361 /* Function used when yydebug is set, to print a token in more detail. */
364 yyprint (file, yychar, yylval)
376 if (IDENTIFIER_POINTER (t))
377 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
382 if (TREE_CODE (t) == INTEGER_CST)
384 #if HOST_BITS_PER_WIDE_INT == 64
385 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
388 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
395 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
401 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
406 /* Iff C is a carriage return, warn about it - if appropriate -
407 and return nonzero. */
412 static int newline_warning = 0;
416 /* ANSI C says the effects of a carriage return in a source file
418 if (pedantic && !newline_warning)
420 warning ("carriage return in source file");
421 warning ("(we only warn about the first carriage return)");
429 /* If C is not whitespace, return C.
430 Otherwise skip whitespace and return first nonwhite char read. */
440 /* We don't recognize comments here, because
441 cpp output can include / and * consecutively as operators.
442 Also, there's no need, since cpp removes all comments. */
450 c = check_newline ();
459 /* While processing a # directive we don't get CPP_HSPACE
460 tokens, so we also need to handle whitespace the normal way. */
461 if (cpp_token == CPP_HSPACE)
478 error ("stray '\\' in program");
488 /* Skips all of the white space at the current location in the input file. */
491 position_after_white_space ()
497 UNGETC (skip_white_space (c));
500 /* Make the token buffer longer, preserving the data in it.
501 P should point to just beyond the last valid character in the old buffer.
502 The value we return is a pointer to the new buffer
503 at a place corresponding to P. */
506 extend_token_buffer_to (size)
510 maxtoken = maxtoken * 2 + 10;
511 while (maxtoken < size);
512 token_buffer = (char *) xrealloc (token_buffer, maxtoken + 2);
516 extend_token_buffer (p)
519 int offset = p - token_buffer;
520 extend_token_buffer_to (offset);
521 return token_buffer + offset;
524 #if defined HANDLE_PRAGMA
525 /* Local versions of these macros, that can be passed as function pointers. */
541 read_line_number (num)
544 register int token = yylex ();
546 if (token == CONSTANT
547 && TREE_CODE (yylval.ttype) == INTEGER_CST)
549 *num = TREE_INT_CST_LOW (yylval.ttype);
554 if (token != END_OF_LINE)
555 error ("invalid #-line");
560 /* At the beginning of a line, increment the line number
561 and process any #-directive on this line.
562 If the line is a #-directive, read the entire line and return a newline.
563 Otherwise, return the line's first non-whitespace character.
565 Note that in the case of USE_CPPLIB, we get the whole line as one
566 CPP_DIRECTIVE token. */
574 enum { act_none, act_push, act_pop } action;
575 int old_lineno, action_number, l;
578 /* Read first nonwhite char on the line. */
582 /* In some cases where we're leaving an include file, we can get multiple
583 CPP_HSPACE tokens in a row, so we need to loop. */
584 while (cpp_token == CPP_HSPACE)
589 while (c == ' ' || c == '\t');
596 /* Sequences of multiple newlines are very common; optimize them. */
600 /* If not #, return it so caller will use it. */
604 /* Don't read beyond this line. */
609 if (cpp_token == CPP_VSPACE)
611 /* Format is "<space> <line number> <filename> <newline>".
612 Only the line number is interesting, and even that
613 we can get more efficiently than scanning the line. */
615 lineno = parse_in.lineno - 1;
622 if (token == IDENTIFIER)
624 /* If a letter follows, then if the word here is `line', skip
625 it and ignore it; otherwise, ignore the line, with an error
626 if the word isn't `pragma'. */
628 const char *name = IDENTIFIER_POINTER (yylval.ttype);
630 if (!strcmp (name, "pragma"))
633 if (token != IDENTIFIER
634 || TREE_CODE (yylval.ttype) != IDENTIFIER_NODE)
638 /* We invoke HANDLE_PRAGMA before HANDLE_GENERIC_PRAGMAS
639 (if both are defined), in order to give the back
640 end a chance to override the interpretation of
641 SYSV style pragmas. */
642 if (HANDLE_PRAGMA (pragma_getc, pragma_ungetc,
643 IDENTIFIER_POINTER (yylval.ttype)))
645 #endif /* HANDLE_PRAGMA */
647 #ifdef HANDLE_GENERIC_PRAGMAS
648 if (handle_generic_pragma (token))
650 #endif /* HANDLE_GENERIC_PRAGMAS */
652 /* Issue a warning message if we have been asked to do so.
653 Ignoring unknown pragmas in system header file unless
654 an explcit -Wunknown-pragmas has been given. */
655 if (warn_unknown_pragmas > 1
656 || (warn_unknown_pragmas && ! in_system_header))
657 warning ("ignoring pragma: %s", token_buffer);
661 else if (!strcmp (name, "define"))
663 debug_define (lineno, GET_DIRECTIVE_LINE ());
666 else if (!strcmp (name, "undef"))
668 debug_undef (lineno, GET_DIRECTIVE_LINE ());
671 else if (!strcmp (name, "line"))
677 else if (!strcmp (name, "ident"))
679 /* #ident. The pedantic warning is now in cccp.c. */
681 /* Here we have just seen `#ident '.
682 A string constant should follow. */
685 if (token == END_OF_LINE)
688 || TREE_CODE (yylval.ttype) != STRING_CST)
690 error ("invalid #ident");
696 #ifdef ASM_OUTPUT_IDENT
697 ASM_OUTPUT_IDENT (asm_out_file,
698 TREE_STRING_POINTER (yylval.ttype));
702 /* Skip the rest of this line. */
706 error ("undefined or invalid # directive `%s'", name);
710 /* If the # is the only nonwhite char on the line,
711 just ignore it. Check the new newline. */
712 if (token == END_OF_LINE)
716 /* Here we have either `#line' or `# <nonletter>'.
717 In either case, it should be a line number; a digit should follow. */
719 if (token != CONSTANT
720 || TREE_CODE (yylval.ttype) != INTEGER_CST)
722 error ("invalid #-line");
726 /* subtract one, because it is the following line that
727 gets the specified number */
729 l = TREE_INT_CST_LOW (yylval.ttype) - 1;
731 /* More follows: it must be a string constant (filename).
732 It would be neat to use cpplib to quickly process the string, but
733 (1) we don't have a handy tokenization of the string, and
734 (2) I don't know how well that would work in the presense
735 of filenames that contain wide characters. */
739 /* Don't treat \ as special if we are processing #line 1 "...".
740 If you want it to be treated specially, use # 1 "...". */
741 ignore_escape_flag = 1;
744 /* Read the string constant. */
747 ignore_escape_flag = 0;
749 if (token == END_OF_LINE)
751 /* No more: store the line number and check following line. */
756 if (token != STRING || TREE_CODE (yylval.ttype) != STRING_CST)
758 error ("invalid #line");
762 input_filename = TREE_STRING_POINTER (yylval.ttype);
764 if (main_input_filename == 0)
765 main_input_filename = input_filename;
772 /* Each change of file name
773 reinitializes whether we are now in a system header. */
774 in_system_header = 0;
776 if (!read_line_number (&action_number))
778 /* Update the name in the top element of input_file_stack. */
779 if (input_file_stack)
780 input_file_stack->name = input_filename;
783 /* `1' after file name means entering new file.
784 `2' after file name means just left a file. */
786 if (action_number == 1)
789 read_line_number (&action_number);
791 else if (action_number == 2)
794 read_line_number (&action_number);
796 if (action_number == 3)
798 /* `3' after file name means this is a system header file. */
799 in_system_header = 1;
800 read_line_number (&action_number);
803 /* Do the actions implied by the preceding numbers. */
805 if (action == act_push)
807 /* Pushing to a new file. */
809 = (struct file_stack *) xmalloc (sizeof (struct file_stack));
810 input_file_stack->line = old_lineno;
811 p->next = input_file_stack;
812 p->name = input_filename;
813 p->indent_level = indent_level;
814 input_file_stack = p;
815 input_file_stack_tick++;
816 debug_start_source_file (input_filename);
818 else if (action == act_pop)
820 /* Popping out of a file. */
821 if (input_file_stack->next)
823 struct file_stack *p = input_file_stack;
824 if (indent_level != p->indent_level)
826 warning_with_file_and_line
827 (p->name, old_lineno,
828 "This file contains more `%c's than `%c's.",
829 indent_level > p->indent_level ? '{' : '}',
830 indent_level > p->indent_level ? '}' : '{');
832 input_file_stack = p->next;
834 input_file_stack_tick++;
835 debug_end_source_file (input_file_stack->line);
838 error ("#-lines for entering and leaving files don't match");
841 /* Now that we've pushed or popped the input stack,
842 update the name in the top element. */
843 if (input_file_stack)
844 input_file_stack->name = input_filename;
846 /* skip the rest of this line. */
853 while (c != '\n' && c != EOF);
857 #ifdef HANDLE_GENERIC_PRAGMAS
859 /* Handle a #pragma directive.
860 TOKEN is the token we read after `#pragma'. Processes the entire input
861 line and return non-zero iff the pragma has been successfully parsed. */
863 /* This function has to be in this file, in order to get at
867 handle_generic_pragma (token)
878 handle_pragma_token (token_buffer, yylval.ttype);
882 return handle_pragma_token (NULL_PTR, NULL_TREE);
885 handle_pragma_token (token_buffer, NULL);
892 #endif /* HANDLE_GENERIC_PRAGMAS */
894 #define ENDFILE -1 /* token that represents end-of-file */
896 /* Read an escape sequence, returning its equivalent as a character,
897 or store 1 in *ignore_ptr if it is backslash-newline. */
900 readescape (ignore_ptr)
903 register int c = GETC();
905 register unsigned count;
906 unsigned firstdig = 0;
912 if (warn_traditional)
913 warning ("the meaning of `\\x' varies with -traditional");
915 if (flag_traditional)
930 if (c >= 'a' && c <= 'f')
931 code += c - 'a' + 10;
932 if (c >= 'A' && c <= 'F')
933 code += c - 'A' + 10;
934 if (c >= '0' && c <= '9')
936 if (code != 0 || count != 0)
945 error ("\\x used with no following hex digits");
947 /* Digits are all 0's. Ok. */
949 else if ((count - 1) * 4 >= TYPE_PRECISION (integer_type_node)
952 << (TYPE_PRECISION (integer_type_node)
955 pedwarn ("hex escape out of range");
958 case '0': case '1': case '2': case '3': case '4':
959 case '5': case '6': case '7':
962 while ((c <= '7') && (c >= '0') && (count++ < 3))
964 code = (code * 8) + (c - '0');
970 case '\\': case '\'': case '"':
979 return TARGET_NEWLINE;
994 if (warn_traditional)
995 warning ("the meaning of `\\a' varies with -traditional");
997 if (flag_traditional)
1002 #if 0 /* Vertical tab is present in common usage compilers. */
1003 if (flag_traditional)
1011 pedwarn ("non-ANSI-standard escape sequence, `\\%c'", c);
1017 /* `\(', etc, are used at beginning of line to avoid confusing Emacs. */
1021 /* `\%' is used to prevent SCCS from getting confused. */
1024 pedwarn ("unknown escape sequence `\\%c'", c);
1028 pedwarn ("unknown escape sequence `\\%c'", c);
1030 pedwarn ("unknown escape sequence: `\\' followed by char code 0x%x", c);
1038 const char *string = _(msgid);
1040 /* We can't print string and character constants well
1041 because the token_buffer contains the result of processing escapes. */
1043 error ("%s at end of input", string);
1044 else if (token_buffer[0] == 0)
1045 error ("%s at null character", string);
1046 else if (token_buffer[0] == '"')
1047 error ("%s before string constant", string);
1048 else if (token_buffer[0] == '\'')
1049 error ("%s before character constant", string);
1050 else if (!ISGRAPH(token_buffer[0]))
1051 error ("%s before character 0%o", string, (unsigned char) token_buffer[0]);
1053 error ("%s before `%s'", string, token_buffer);
1063 char long_long_flag;
1066 struct try_type type_sequence[] =
1068 { &integer_type_node, 0, 0, 0},
1069 { &unsigned_type_node, 1, 0, 0},
1070 { &long_integer_type_node, 0, 1, 0},
1071 { &long_unsigned_type_node, 1, 1, 0},
1072 { &long_long_integer_type_node, 0, 1, 1},
1073 { &long_long_unsigned_type_node, 1, 1, 1}
1087 int conversion_errno;
1088 REAL_VALUE_TYPE value;
1095 struct pf_args * args = (struct pf_args *) data;
1096 int fflag = 0, lflag = 0;
1097 /* Copy token_buffer now, while it has just the number
1098 and not the suffixes; once we add `f' or `i',
1099 REAL_VALUE_ATOF may not work any more. */
1100 char *copy = (char *) alloca (args->p - token_buffer + 1);
1101 bcopy (token_buffer, copy, args->p - token_buffer + 1);
1103 args->conversion_errno = 0;
1104 args->type = double_type_node;
1110 /* Read the suffixes to choose a data type. */
1115 error ("more than one `f' in numeric constant");
1121 error ("more than one `l' in numeric constant");
1127 error ("more than one `i' or `j' in numeric constant");
1129 pedwarn ("ANSI C forbids imaginary numeric constants");
1140 if (args->p >= token_buffer + maxtoken - 3)
1141 args->p = extend_token_buffer (args->p);
1142 *(args->p++) = args->c;
1147 /* The second argument, machine_mode, of REAL_VALUE_ATOF
1148 tells the desired precision of the binary result
1149 of decimal-to-binary conversion. */
1154 error ("both `f' and `l' in floating constant");
1156 args->type = float_type_node;
1158 if (args->base == 16)
1159 args->value = REAL_VALUE_HTOF (copy, TYPE_MODE (args->type));
1161 args->value = REAL_VALUE_ATOF (copy, TYPE_MODE (args->type));
1162 args->conversion_errno = errno;
1163 /* A diagnostic is required here by some ANSI C testsuites.
1164 This is not pedwarn, because some people don't want
1165 an error for this. */
1166 if (REAL_VALUE_ISINF (args->value) && pedantic)
1167 warning ("floating point number exceeds range of `float'");
1171 args->type = long_double_type_node;
1173 if (args->base == 16)
1174 args->value = REAL_VALUE_HTOF (copy, TYPE_MODE (args->type));
1176 args->value = REAL_VALUE_ATOF (copy, TYPE_MODE (args->type));
1177 args->conversion_errno = errno;
1178 if (REAL_VALUE_ISINF (args->value) && pedantic)
1179 warning ("floating point number exceeds range of `long double'");
1184 if (args->base == 16)
1185 args->value = REAL_VALUE_HTOF (copy, TYPE_MODE (args->type));
1187 args->value = REAL_VALUE_ATOF (copy, TYPE_MODE (args->type));
1188 args->conversion_errno = errno;
1189 if (REAL_VALUE_ISINF (args->value) && pedantic)
1190 warning ("floating point number exceeds range of `double'");
1194 /* Get the next character, staying within the current token if possible.
1195 If we're lexing a token, we don't want to look beyond the end of the
1196 token cpplib has prepared for us; otherwise, we end up reading in the
1197 next token, which screws up feed_input. So just return a null
1200 static inline int token_getch PARAMS ((void));
1206 if (yy_cur == yy_lim)
1212 static inline void token_put_back PARAMS ((int));
1225 /* Read a single token from the input stream, and assign it lexical
1239 /* Effectively do c = skip_white_space (c)
1240 but do it faster in the usual cases. */
1250 if (cpp_token == CPP_HSPACE)
1251 c = yy_get_token ();
1258 /* Call skip_white_space so we can warn if appropriate. */
1263 c = skip_white_space (c);
1265 goto found_nonwhite;
1269 token_buffer[0] = c;
1270 token_buffer[1] = 0;
1272 /* yylloc.first_line = lineno; */
1278 token_buffer[0] = 0;
1280 value = END_OF_LINE;
1287 if (cpp_token == CPP_NAME)
1290 /* Capital L may start a wide-string or wide-character constant. */
1292 register int c = token_getch();
1301 goto string_constant;
1308 if (!doing_objc_thang)
1315 /* '@' may start a constant string object. */
1316 register int c = token_getch ();
1320 goto string_constant;
1323 /* Fall through to treat '@' as the start of an identifier. */
1326 case 'A': case 'B': case 'C': case 'D': case 'E':
1327 case 'F': case 'G': case 'H': case 'I': case 'J':
1328 case 'K': case 'M': case 'N': case 'O':
1329 case 'P': case 'Q': case 'R': case 'S': case 'T':
1330 case 'U': case 'V': case 'W': case 'X': case 'Y':
1332 case 'a': case 'b': case 'c': case 'd': case 'e':
1333 case 'f': case 'g': case 'h': case 'i': case 'j':
1334 case 'k': case 'l': case 'm': case 'n': case 'o':
1335 case 'p': case 'q': case 'r': case 's': case 't':
1336 case 'u': case 'v': case 'w': case 'x': case 'y':
1342 if (cpp_token == CPP_NAME)
1344 /* Note that one character has already been read from
1345 yy_cur into token_buffer. Also, cpplib complains about
1346 $ in identifiers, so we don't have to. */
1348 int len = yy_lim - yy_cur + 1;
1349 if (len >= maxtoken)
1350 extend_token_buffer_to (len + 1);
1351 memcpy (token_buffer + 1, yy_cur, len);
1352 p = token_buffer + len;
1359 while (ISALNUM (c) || c == '_' || c == '$' || c == '@')
1361 /* Make sure this char really belongs in an identifier. */
1364 if (! dollars_in_ident)
1365 error ("`$' in identifier");
1367 pedwarn ("`$' in identifier");
1370 if (p >= token_buffer + maxtoken)
1371 p = extend_token_buffer (p);
1384 /* Try to recognize a keyword. Uses minimum-perfect hash function */
1387 register struct resword *ptr;
1389 if ((ptr = is_reserved_word (token_buffer, p - token_buffer)))
1392 yylval.ttype = ridpointers[(int) ptr->rid];
1393 value = (int) ptr->token;
1395 /* Only return OBJECTNAME if it is a typedef. */
1396 if (doing_objc_thang && value == OBJECTNAME)
1398 lastiddecl = lookup_name(yylval.ttype);
1400 if (lastiddecl == NULL_TREE
1401 || TREE_CODE (lastiddecl) != TYPE_DECL)
1405 /* Even if we decided to recognize asm, still perhaps warn. */
1407 && (value == ASM_KEYWORD || value == TYPEOF
1408 || ptr->rid == RID_INLINE)
1409 && token_buffer[0] != '_')
1410 pedwarn ("ANSI does not permit the keyword `%s'",
1415 /* If we did not find a keyword, look for an identifier
1418 if (value == IDENTIFIER)
1420 if (token_buffer[0] == '@')
1421 error("invalid identifier `%s'", token_buffer);
1423 yylval.ttype = get_identifier (token_buffer);
1424 lastiddecl = lookup_name (yylval.ttype);
1426 if (lastiddecl != 0 && TREE_CODE (lastiddecl) == TYPE_DECL)
1428 /* A user-invisible read-only initialized variable
1429 should be replaced by its value.
1430 We handle only strings since that's the only case used in C. */
1431 else if (lastiddecl != 0 && TREE_CODE (lastiddecl) == VAR_DECL
1432 && DECL_IGNORED_P (lastiddecl)
1433 && TREE_READONLY (lastiddecl)
1434 && DECL_INITIAL (lastiddecl) != 0
1435 && TREE_CODE (DECL_INITIAL (lastiddecl)) == STRING_CST)
1437 tree stringval = DECL_INITIAL (lastiddecl);
1439 /* Copy the string value so that we won't clobber anything
1440 if we put something in the TREE_CHAIN of this one. */
1441 yylval.ttype = build_string (TREE_STRING_LENGTH (stringval),
1442 TREE_STRING_POINTER (stringval));
1445 else if (doing_objc_thang)
1447 tree objc_interface_decl = is_class_name (yylval.ttype);
1449 if (objc_interface_decl)
1452 yylval.ttype = objc_interface_decl;
1461 if (yy_cur < yy_lim)
1464 /* It's hard to preserve tokenization on '.' because
1465 it could be a symbol by itself, or it could be the
1466 start of a floating point number and cpp won't tell us. */
1467 register int c1 = token_getch ();
1468 token_buffer[1] = c1;
1471 c1 = token_getch ();
1474 token_buffer[2] = c1;
1475 token_buffer[3] = 0;
1479 error ("parse error at `..'");
1483 token_put_back (c1);
1486 token_put_back (c1);
1489 token_buffer[1] = 0;
1493 /* Optimize for most frequent case. */
1498 cond = (yy_cur == yy_lim);
1500 register int c1 = token_getch ();
1501 token_put_back (c1);
1502 cond = (! ISALNUM (c1) && c1 != '.');
1506 yylval.ttype = (c == '0') ? integer_zero_node : integer_one_node;
1512 case '2': case '3': case '4':
1513 case '5': case '6': case '7': case '8': case '9':
1518 int largest_digit = 0;
1522 /* We actually store only HOST_BITS_PER_CHAR bits in each part.
1523 The code below which fills the parts array assumes that a host
1524 int is at least twice as wide as a host char, and that
1525 HOST_BITS_PER_WIDE_INT is an even multiple of HOST_BITS_PER_CHAR.
1526 Two HOST_WIDE_INTs is the largest int literal we can store.
1527 In order to detect overflow below, the number of parts (TOTAL_PARTS)
1528 must be exactly the number of parts needed to hold the bits
1529 of two HOST_WIDE_INTs. */
1530 #define TOTAL_PARTS ((HOST_BITS_PER_WIDE_INT / HOST_BITS_PER_CHAR) * 2)
1531 unsigned int parts[TOTAL_PARTS];
1533 enum anon1 { NOT_FLOAT, AFTER_POINT, TOO_MANY_POINTS, AFTER_EXPON}
1534 floatflag = NOT_FLOAT;
1536 for (count = 0; count < TOTAL_PARTS; count++)
1544 *p++ = (c = token_getch());
1545 if ((c == 'x') || (c == 'X'))
1548 *p++ = (c = token_getch());
1550 /* Leading 0 forces octal unless the 0 is the only digit. */
1551 else if (c >= '0' && c <= '9')
1560 /* Read all the digits-and-decimal-points. */
1563 || (ISALNUM (c) && c != 'l' && c != 'L'
1564 && c != 'u' && c != 'U'
1565 && c != 'i' && c != 'I' && c != 'j' && c != 'J'
1566 && (floatflag == NOT_FLOAT
1567 || ((base != 16) && (c != 'f') && (c != 'F'))
1572 if (base == 16 && pedantic)
1573 pedwarn ("floating constant may not be in radix 16");
1574 if (floatflag == TOO_MANY_POINTS)
1575 /* We have already emitted an error. Don't need another. */
1577 else if (floatflag == AFTER_POINT || floatflag == AFTER_EXPON)
1579 error ("malformed floating constant");
1580 floatflag = TOO_MANY_POINTS;
1581 /* Avoid another error from atof by forcing all characters
1582 from here on to be ignored. */
1586 floatflag = AFTER_POINT;
1590 *p++ = c = token_getch();
1591 /* Accept '.' as the start of a floating-point number
1592 only when it is followed by a digit. */
1593 if (p == token_buffer + 2 && !ISDIGIT (c))
1598 /* It is not a decimal point.
1599 It should be a digit (perhaps a hex digit). */
1605 else if (base <= 10)
1607 if (c == 'e' || c == 'E')
1610 floatflag = AFTER_EXPON;
1611 break; /* start of exponent */
1613 error ("nondigits in number and not hexadecimal");
1616 else if (base == 16 && (c == 'p' || c == 'P'))
1618 floatflag = AFTER_EXPON;
1619 break; /* start of exponent */
1629 if (c >= largest_digit)
1633 for (count = 0; count < TOTAL_PARTS; count++)
1635 parts[count] *= base;
1639 += (parts[count-1] >> HOST_BITS_PER_CHAR);
1641 &= (1 << HOST_BITS_PER_CHAR) - 1;
1647 /* If the highest-order part overflows (gets larger than
1648 a host char will hold) then the whole number has
1649 overflowed. Record this and truncate the highest-order
1651 if (parts[TOTAL_PARTS - 1] >> HOST_BITS_PER_CHAR)
1654 parts[TOTAL_PARTS - 1] &= (1 << HOST_BITS_PER_CHAR) - 1;
1657 if (p >= token_buffer + maxtoken - 3)
1658 p = extend_token_buffer (p);
1659 *p++ = (c = token_getch());
1663 /* This can happen on input like `int i = 0x;' */
1665 error ("numeric constant with no digits");
1667 if (largest_digit >= base)
1668 error ("numeric constant contains digits beyond the radix");
1670 /* Remove terminating char from the token buffer and delimit the
1674 if (floatflag != NOT_FLOAT)
1677 int imag, conversion_errno;
1678 REAL_VALUE_TYPE value;
1679 struct pf_args args;
1681 /* Read explicit exponent if any, and put it in tokenbuf. */
1683 if ((base == 10 && ((c == 'e') || (c == 'E')))
1684 || (base == 16 && (c == 'p' || c == 'P')))
1686 if (p >= token_buffer + maxtoken - 3)
1687 p = extend_token_buffer (p);
1690 if ((c == '+') || (c == '-'))
1695 /* Exponent is decimal, even if string is a hex float. */
1697 error ("floating constant exponent has no digits");
1700 if (p >= token_buffer + maxtoken - 3)
1701 p = extend_token_buffer (p);
1706 if (base == 16 && floatflag != AFTER_EXPON)
1707 error ("hexadecimal floating constant has no exponent");
1711 /* Setup input for parse_float() */
1716 /* Convert string to a double, checking for overflow. */
1717 if (do_float_handler (parse_float, (PTR) &args))
1719 /* Receive output from parse_float() */
1724 /* We got an exception from parse_float() */
1725 error ("floating constant out of range");
1729 /* Receive output from parse_float() */
1733 conversion_errno = args.conversion_errno;
1736 /* ERANGE is also reported for underflow,
1737 so test the value to distinguish overflow from that. */
1738 if (conversion_errno == ERANGE && !flag_traditional && pedantic
1739 && (REAL_VALUES_LESS (dconst1, value)
1740 || REAL_VALUES_LESS (value, dconstm1)))
1741 warning ("floating point number exceeds range of `double'");
1744 /* If the result is not a number, assume it must have been
1745 due to some error message above, so silently convert
1747 if (REAL_VALUE_ISNAN (value))
1750 /* Create a node with determined type and value. */
1752 yylval.ttype = build_complex (NULL_TREE,
1753 convert (type, integer_zero_node),
1754 build_real (type, value));
1756 yylval.ttype = build_real (type, value);
1760 tree traditional_type, ansi_type, type;
1761 HOST_WIDE_INT high, low;
1762 int spec_unsigned = 0;
1764 int spec_long_long = 0;
1768 traditional_type = ansi_type = type = NULL_TREE;
1771 if (c == 'u' || c == 'U')
1774 error ("two `u's in integer constant");
1777 else if (c == 'l' || c == 'L')
1782 error ("three `l's in integer constant");
1783 else if (pedantic && ! in_system_header && warn_long_long)
1784 pedwarn ("ANSI C forbids long long integer constants");
1789 else if (c == 'i' || c == 'j' || c == 'I' || c == 'J')
1792 error ("more than one `i' or `j' in numeric constant");
1794 pedwarn ("ANSI C forbids imaginary numeric constants");
1799 if (p >= token_buffer + maxtoken - 3)
1800 p = extend_token_buffer (p);
1805 /* If the literal overflowed, pedwarn about it now. */
1809 pedwarn ("integer constant is too large for this configuration of the compiler - truncated to %d bits", HOST_BITS_PER_WIDE_INT * 2);
1812 /* This is simplified by the fact that our constant
1813 is always positive. */
1817 for (i = 0; i < HOST_BITS_PER_WIDE_INT / HOST_BITS_PER_CHAR; i++)
1819 high |= ((HOST_WIDE_INT) parts[i + (HOST_BITS_PER_WIDE_INT
1820 / HOST_BITS_PER_CHAR)]
1821 << (i * HOST_BITS_PER_CHAR));
1822 low |= (HOST_WIDE_INT) parts[i] << (i * HOST_BITS_PER_CHAR);
1825 yylval.ttype = build_int_2 (low, high);
1826 TREE_TYPE (yylval.ttype) = long_long_unsigned_type_node;
1828 /* If warn_traditional, calculate both the ANSI type and the
1829 traditional type, then see if they disagree.
1830 Otherwise, calculate only the type for the dialect in use. */
1831 if (warn_traditional || flag_traditional)
1833 /* Calculate the traditional type. */
1834 /* Traditionally, any constant is signed;
1835 but if unsigned is specified explicitly, obey that.
1836 Use the smallest size with the right number of bits,
1837 except for one special case with decimal constants. */
1838 if (! spec_long && base != 10
1839 && int_fits_type_p (yylval.ttype, unsigned_type_node))
1840 traditional_type = (spec_unsigned ? unsigned_type_node
1841 : integer_type_node);
1842 /* A decimal constant must be long
1843 if it does not fit in type int.
1844 I think this is independent of whether
1845 the constant is signed. */
1846 else if (! spec_long && base == 10
1847 && int_fits_type_p (yylval.ttype, integer_type_node))
1848 traditional_type = (spec_unsigned ? unsigned_type_node
1849 : integer_type_node);
1850 else if (! spec_long_long)
1851 traditional_type = (spec_unsigned ? long_unsigned_type_node
1852 : long_integer_type_node);
1853 else if (int_fits_type_p (yylval.ttype,
1855 ? long_long_unsigned_type_node
1856 : long_long_integer_type_node))
1857 traditional_type = (spec_unsigned
1858 ? long_long_unsigned_type_node
1859 : long_long_integer_type_node);
1861 traditional_type = (spec_unsigned
1862 ? widest_unsigned_literal_type_node
1863 : widest_integer_literal_type_node);
1865 if (warn_traditional || ! flag_traditional)
1867 /* Calculate the ANSI type. */
1868 if (! spec_long && ! spec_unsigned
1869 && int_fits_type_p (yylval.ttype, integer_type_node))
1870 ansi_type = integer_type_node;
1871 else if (! spec_long && (base != 10 || spec_unsigned)
1872 && int_fits_type_p (yylval.ttype, unsigned_type_node))
1873 ansi_type = unsigned_type_node;
1874 else if (! spec_unsigned && !spec_long_long
1875 && int_fits_type_p (yylval.ttype, long_integer_type_node))
1876 ansi_type = long_integer_type_node;
1877 else if (! spec_long_long
1878 && int_fits_type_p (yylval.ttype,
1879 long_unsigned_type_node))
1880 ansi_type = long_unsigned_type_node;
1881 else if (! spec_unsigned
1882 && int_fits_type_p (yylval.ttype,
1883 long_long_integer_type_node))
1884 ansi_type = long_long_integer_type_node;
1885 else if (int_fits_type_p (yylval.ttype,
1886 long_long_unsigned_type_node))
1887 ansi_type = long_long_unsigned_type_node;
1888 else if (! spec_unsigned
1889 && int_fits_type_p (yylval.ttype,
1890 widest_integer_literal_type_node))
1891 ansi_type = widest_integer_literal_type_node;
1893 ansi_type = widest_unsigned_literal_type_node;
1896 type = flag_traditional ? traditional_type : ansi_type;
1898 /* We assume that constants specified in a non-decimal
1899 base are bit patterns, and that the programmer really
1900 meant what they wrote. */
1901 if (warn_traditional && base == 10
1902 && traditional_type != ansi_type)
1904 if (TYPE_PRECISION (traditional_type)
1905 != TYPE_PRECISION (ansi_type))
1906 warning ("width of integer constant changes with -traditional");
1907 else if (TREE_UNSIGNED (traditional_type)
1908 != TREE_UNSIGNED (ansi_type))
1909 warning ("integer constant is unsigned in ANSI C, signed with -traditional");
1911 warning ("width of integer constant may change on other systems with -traditional");
1914 if (pedantic && !flag_traditional && !spec_long_long && !warn
1915 && (TYPE_PRECISION (long_integer_type_node)
1916 < TYPE_PRECISION (type)))
1919 pedwarn ("integer constant larger than the maximum value of an unsigned long int");
1922 if (base == 10 && ! spec_unsigned && TREE_UNSIGNED (type))
1923 warning ("decimal constant is so large that it is unsigned");
1927 if (TYPE_PRECISION (type)
1928 <= TYPE_PRECISION (integer_type_node))
1930 = build_complex (NULL_TREE, integer_zero_node,
1931 convert (integer_type_node,
1934 error ("complex integer constant is too wide for `complex int'");
1936 else if (flag_traditional && !int_fits_type_p (yylval.ttype, type))
1937 /* The traditional constant 0x80000000 is signed
1938 but doesn't fit in the range of int.
1939 This will change it to -0x80000000, which does fit. */
1941 TREE_TYPE (yylval.ttype) = unsigned_type (type);
1942 yylval.ttype = convert (type, yylval.ttype);
1943 TREE_OVERFLOW (yylval.ttype)
1944 = TREE_CONSTANT_OVERFLOW (yylval.ttype) = 0;
1947 TREE_TYPE (yylval.ttype) = type;
1950 /* If it's still an integer (not a complex), and it doesn't
1951 fit in the type we choose for it, then pedwarn. */
1954 && TREE_CODE (TREE_TYPE (yylval.ttype)) == INTEGER_TYPE
1955 && ! int_fits_type_p (yylval.ttype, TREE_TYPE (yylval.ttype)))
1956 pedwarn ("integer constant is larger than the maximum value for its type");
1962 if (ISALNUM (c) || c == '.' || c == '_' || c == '$'
1963 || (!flag_traditional && (c == '-' || c == '+')
1964 && (p[-1] == 'e' || p[-1] == 'E')))
1965 error ("missing white space after number `%s'", token_buffer);
1967 value = CONSTANT; break;
1973 register int result = 0;
1974 register int num_chars = 0;
1976 unsigned width = TYPE_PRECISION (char_type_node);
1978 #ifdef MULTIBYTE_CHARS
1979 int longest_char = local_mb_cur_max ();
1980 (void) local_mbtowc (NULL_PTR, NULL_PTR, 0);
1983 max_chars = TYPE_PRECISION (integer_type_node) / width;
1985 width = WCHAR_TYPE_SIZE;
1992 if (c == '\'' || c == EOF)
1999 c = readescape (&ignore);
2002 if (width < HOST_BITS_PER_INT
2003 && (unsigned) c >= ((unsigned)1 << width))
2004 pedwarn ("escape sequence out of range for character");
2005 #ifdef MAP_CHARACTER
2007 c = MAP_CHARACTER (c);
2013 pedwarn ("ANSI C forbids newline in character constant");
2018 #ifdef MULTIBYTE_CHARS
2022 for (i = 1; i <= longest_char; ++i)
2024 if (i > maxtoken - 4)
2025 extend_token_buffer (token_buffer);
2027 token_buffer[i] = c;
2028 char_len = local_mbtowc (& wc,
2037 /* mbtowc sometimes needs an extra char before accepting */
2042 /* Merge character into result; ignore excess chars. */
2043 for (i = 1; i <= char_len; ++i)
2047 if (width < HOST_BITS_PER_INT)
2048 result = (result << width)
2050 & ((1 << width) - 1));
2052 result = token_buffer[i];
2054 num_chars += char_len;
2063 warning ("Ignoring invalid multibyte character");
2064 /* Replace all but the first byte. */
2065 for (--i; i > 1; --i)
2066 token_put_back (token_buffer[i]);
2067 wc = token_buffer[1];
2069 #ifdef MAP_CHARACTER
2070 c = MAP_CHARACTER (wc);
2075 #else /* ! MULTIBYTE_CHARS */
2076 #ifdef MAP_CHARACTER
2077 c = MAP_CHARACTER (c);
2079 #endif /* ! MULTIBYTE_CHARS */
2084 if (chars_seen == 1) /* only keep the first one */
2089 /* Merge character into result; ignore excess chars. */
2090 num_chars += (width / TYPE_PRECISION (char_type_node));
2091 if (num_chars < max_chars + 1)
2093 if (width < HOST_BITS_PER_INT)
2094 result = (result << width) | (c & ((1 << width) - 1));
2101 error ("malformed character constant");
2102 else if (chars_seen == 0)
2103 error ("empty character constant");
2104 else if (num_chars > max_chars)
2106 num_chars = max_chars;
2107 error ("character constant too long");
2109 else if (chars_seen != 1 && ! flag_traditional && warn_multichar)
2110 warning ("multi-character character constant");
2112 /* If char type is signed, sign-extend the constant. */
2115 int num_bits = num_chars * width;
2117 /* We already got an error; avoid invalid shift. */
2118 yylval.ttype = build_int_2 (0, 0);
2119 else if (TREE_UNSIGNED (char_type_node)
2120 || ((result >> (num_bits - 1)) & 1) == 0)
2122 = build_int_2 (result & (~(unsigned HOST_WIDE_INT) 0
2123 >> (HOST_BITS_PER_WIDE_INT - num_bits)),
2127 = build_int_2 (result | ~(~(unsigned HOST_WIDE_INT) 0
2128 >> (HOST_BITS_PER_WIDE_INT - num_bits)),
2130 TREE_TYPE (yylval.ttype) = integer_type_node;
2134 yylval.ttype = build_int_2 (result, 0);
2135 TREE_TYPE (yylval.ttype) = wchar_type_node;
2145 unsigned width = wide_flag ? WCHAR_TYPE_SIZE
2146 : TYPE_PRECISION (char_type_node);
2147 #ifdef MULTIBYTE_CHARS
2148 int longest_char = local_mb_cur_max ();
2149 (void) local_mbtowc (NULL_PTR, NULL_PTR, 0);
2152 p = token_buffer + 1;
2154 while (c != '"' && c != EOF)
2156 /* ignore_escape_flag is set for reading the filename in #line. */
2157 if (!ignore_escape_flag && c == '\\')
2160 c = readescape (&ignore);
2163 if (width < HOST_BITS_PER_INT
2164 && (unsigned) c >= ((unsigned)1 << width))
2165 pedwarn ("escape sequence out of range for character");
2170 pedwarn ("ANSI C forbids newline in string constant");
2175 #ifdef MULTIBYTE_CHARS
2179 for (i = 0; i < longest_char; ++i)
2181 if (p + i >= token_buffer + maxtoken)
2182 p = extend_token_buffer (p);
2185 char_len = local_mbtowc (& wc, p, i + 1);
2192 warning ("Ignoring invalid multibyte character");
2193 /* Replace all except the first byte. */
2195 for (--i; i > 0; --i)
2196 token_put_back (p[i]);
2199 /* mbtowc sometimes needs an extra char before accepting */
2209 #endif /* MULTIBYTE_CHARS */
2212 /* Add this single character into the buffer either as a wchar_t
2213 or as a single byte. */
2216 unsigned width = TYPE_PRECISION (char_type_node);
2217 unsigned bytemask = (1 << width) - 1;
2220 if (p + WCHAR_BYTES > token_buffer + maxtoken)
2221 p = extend_token_buffer (p);
2223 for (byte = 0; byte < WCHAR_BYTES; ++byte)
2226 if (byte >= (int) sizeof (c))
2229 value = (c >> (byte * width)) & bytemask;
2230 if (BYTES_BIG_ENDIAN)
2231 p[WCHAR_BYTES - byte - 1] = value;
2239 if (p >= token_buffer + maxtoken)
2240 p = extend_token_buffer (p);
2248 /* Terminate the string value, either with a single byte zero
2249 or with a wide zero. */
2252 if (p + WCHAR_BYTES > token_buffer + maxtoken)
2253 p = extend_token_buffer (p);
2254 bzero (p, WCHAR_BYTES);
2259 if (p >= token_buffer + maxtoken)
2260 p = extend_token_buffer (p);
2265 error ("Unterminated string constant");
2267 /* We have read the entire constant.
2268 Construct a STRING_CST for the result. */
2272 yylval.ttype = build_string (p - (token_buffer + 1),
2274 TREE_TYPE (yylval.ttype) = wchar_array_type_node;
2279 /* Return an Objective-C @"..." constant string object. */
2280 yylval.ttype = build_objc_string (p - (token_buffer + 1),
2282 TREE_TYPE (yylval.ttype) = char_array_type_node;
2283 value = OBJC_STRING;
2287 yylval.ttype = build_string (p - (token_buffer + 1),
2289 TREE_TYPE (yylval.ttype) = char_array_type_node;
2317 yylval.code = PLUS_EXPR; break;
2319 yylval.code = MINUS_EXPR; break;
2321 yylval.code = BIT_AND_EXPR; break;
2323 yylval.code = BIT_IOR_EXPR; break;
2325 yylval.code = MULT_EXPR; break;
2327 yylval.code = TRUNC_DIV_EXPR; break;
2329 yylval.code = TRUNC_MOD_EXPR; break;
2331 yylval.code = BIT_XOR_EXPR; break;
2333 yylval.code = LSHIFT_EXPR; break;
2335 yylval.code = RSHIFT_EXPR; break;
2337 yylval.code = LT_EXPR; break;
2339 yylval.code = GT_EXPR; break;
2342 token_buffer[1] = c1 = token_getch();
2343 token_buffer[2] = 0;
2350 value = ARITHCOMPARE; yylval.code = LE_EXPR; goto done;
2352 value = ARITHCOMPARE; yylval.code = GE_EXPR; goto done;
2354 value = EQCOMPARE; yylval.code = NE_EXPR; goto done;
2356 value = EQCOMPARE; yylval.code = EQ_EXPR; goto done;
2358 value = ASSIGN; goto done;
2364 value = PLUSPLUS; goto done;
2366 value = MINUSMINUS; goto done;
2368 value = ANDAND; goto done;
2370 value = OROR; goto done;
2383 { value = POINTSAT; goto done; }
2389 { value = ']'; goto done; }
2393 { value = '{'; indent_level++; goto done; }
2395 { value = '['; goto done; }
2399 { value = '}'; indent_level--; goto done; }
2403 token_put_back (c1);
2404 token_buffer[1] = 0;
2406 if ((c == '<') || (c == '>'))
2407 value = ARITHCOMPARE;
2413 /* Don't make yyparse think this is eof. */
2432 /* yylloc.last_line = lineno; */
2437 /* Sets the value of the 'yydebug' variable to VALUE.
2438 This is a function so we don't have to have YYDEBUG defined
2439 in order to build the compiler. */
2448 warning ("YYDEBUG not defined.");