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Fixed fatal errors in constraint checking.
[splint.git] / src / cscanner.l
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ac0860d8 1/*;-*-C-*-;
11db3170 2** Splint - annotation-assisted static program checker
1b8ae690 3** Copyright (C) 1994-2002 University of Virginia,
11db3170 4** Massachusetts Institute of Technology
ac0860d8 5**
11db3170 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.
10**
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.
15**
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.
ac0860d8 19**
1b8ae690 20** For information on splint: splint@cs.virginia.edu
21** To report a bug: splint-bug@cs.virginia.edu
11db3170 22** For more information: http://www.splint.org
23*/
24/*
25** cscanner.l
ac0860d8 26**
11db3170 27** Flex lexer for C.
28** Based on a C lexer by Nate Osgood
29** from hacrat@catfish.lcs.mit.edu Mon Jun 14 13:06:32 1993
ac0860d8 30*/
31/*
11db3170 32** Modified by Herbert 08/19/97:
33** - added #include for IBM's OS/2 compiler.
34** - fixed weird bug with lookup of tmp files (OS/2 and MSDOS only).
35*/
ac0860d8 36/*
11db3170 37** Modified by Mike Smith
38** Corrected missing 'line' in scanf() calls in handleSpecial().
1b8ae690 39** Without this, I get an error when Splint hits a '#line' directive
11db3170 40** in the pre-pre-processed source files. For safety, I have made these
41** conditional on OS2 and MSDOS because I don't understand why noone else
42** has seen this problem.
43**
44** Modified by Mike Smith, 4th June 1997
45** Finally resolved the #line problem. The scanf() calls have been fixed to
46** allow the following #line forms:-
47**
48** #line 123 "filename"
49** #line 123
50** # 123 "filename"
51** # 123
52**
53** The last two are generated by the GNU pre-processor, apparently
54*/
ac0860d8 55
56Digit [0-9]
57Letter [a-zA-Z_$]
58H [a-fA-F0-9]
59E [Ee][+-]?{Digit}+
60U (u|U)
61L (l|L)
62FS (f|F|l|L)
63IS (u|U|l|L)*
64ULSuffix ({U}{L}|{L}{U})
65
66%{
1b8ae690 67# include "splintMacros.nf"
9622303f 68# if defined(OS2) && defined(__IBMC__)
69 /* needed for isatty()... */
70# include <io.h>
71# else
4dd72714 72
73/*
74** Win32 doesn't have unistd.h
75*/
76
77# ifndef WIN32
ac0860d8 78# include <unistd.h>
9622303f 79# endif
80
4dd72714 81# endif
82
ac0860d8 83# include "basic.h"
84
85# include "cgrammar.h"
86# include "cgrammar_tokens.h"
ac0860d8 87# include "portab.h"
88
ac0860d8 89static bool lastWasString = FALSE;
90static char savechar = '\0';
91
92/*@notfunction@*/
93# define yyinput() (incColumn (), getc (yyin))
94
6fcd0b1e 95static /*@owned@*/ cstring s_lastidprocessed = cstring_undefined;
ac0860d8 96static int lminput (void);
97static int tokLength = 0;
2f2892c2 98static bool s_inSpecPart = FALSE;
99static int s_whichSpecPart;
ac0860d8 100static bool continueLine = FALSE;
101
102static int ninput (void);
103static char processChar (void);
104static double processFloat (void);
e0b363ad 105static /*@only@*/ exprNode processString (void) ;
106static /*@only@*/ exprNode processWideString (void) ;
ac0860d8 107static long processDec (void);
108static long processHex (void);
109static long processOctal (void);
110static int processIdentifier (/*@only@*/ cstring)
6fcd0b1e 111 /*@globals s_lastidprocessed@*/ ;
ac0860d8 112static bool processHashIdentifier (/*@only@*/ cstring)
6fcd0b1e 113 /*@globals s_lastidprocessed@*/ ;
ac0860d8 114
115static int processSpec (int);
116static bool handleSpecial (char *);
117static int handleLlSpecial (void);
118static void handleMacro (void);
119static bool processMacro (void);
120static /*@only@*/ cstring makeIdentifier (char *);
121
122/* yes, this is exported! */
123bool g_expectingTypeName = TRUE; /* beginning of file can be type name! */
124
125static bool expectingMetaStateName = FALSE;
126
127static int returnInt (ctype, long);
128static int returnFloat (ctype, double);
129static int returnChar (char);
130static void setTokLength (int) /*@modifies g_currentloc@*/ ;
131static void setTokLengthT (size_t) /*@modifies g_currentloc@*/ ;
132
133static void advanceLine (void)
134{
135 tokLength = 0;
136 beginLine ();
137}
138
139/*@-allmacros@*/
140# define RETURN_INT(c,i) \
141 do { lastWasString = FALSE; \
142 return (returnInt (c, i)); } while (FALSE)
143
144# define RETURN_FLOAT(c,f) \
145 do { lastWasString = FALSE; \
146 return (returnFloat (c, f)); \
147 } while (FALSE)
148
149# define RETURN_CHAR(c) \
150 do { lastWasString = FALSE; \
151 return (returnChar (c)); \
152 } while (FALSE)
153
154# define RETURN_TOK(t) \
155 do { yylval.tok = lltok_create (t, fileloc_decColumn (g_currentloc, tokLength)); \
156 tokLength = 0; \
157 lastWasString = FALSE; \
158 return (t); } while (FALSE)
159
160# define RETURN_TYPE(t, ct) \
161 do { yylval.ctyp = ct; tokLength = 0; return (t); } while (FALSE)
162
163/* don't fileloc_decColumn (g_currentloc, tokLength));
164 the string could have \n's in it!
165*/
166
167# define RETURN_STRING(c) \
168 do { yylval.expr = exprNode_stringLiteral (c, fileloc_decColumn (g_currentloc, tokLength)); \
169 tokLength = 0; \
170 lastWasString = TRUE; \
171 return (CCONSTANT); } while (FALSE)
172
173# define RETURN_EXPR(e) \
174 do { yylval.expr = e; \
175 tokLength = 0; \
176 lastWasString = TRUE; \
177 return (CCONSTANT); } while (FALSE)
178
179/*@=allmacros@*/
180
181static void setTokLength (int len)
182{
183 addColumn (len);
184 tokLength = len;
185 DPRINTF (("Set tok length: %d", len));
186}
187
188static void setTokLengthT (size_t len)
189{
190 setTokLength (size_toInt (len));
191}
192
193# include "flex.head"
194
195/*@-unrecog@*/ /*@i5343@*/
196
197%}
198
199%%
200
b87215ab 201"/*" { llfatalerror (cstring_makeLiteral ("Comment in pre-processor output")); }
ac0860d8 202
203"#"{Letter}({Letter}|{Digit})* {
204 context_saveLocation ();
205 setTokLength (longUnsigned_toInt (mstring_length (yytext)));
206
207 if (processHashIdentifier (makeIdentifier (yytext + 1)))
208 {
209 if (lastWasString)
210 {
211 /* was nothing! */ /*@i32@*/
212 RETURN_STRING (cstring_makeLiteral ("\"\""));
213 }
214 else
215 {
216 RETURN_STRING (cstring_makeLiteral ("\"\""));
217 }
218 }
219 else
220 {
221 if (handleSpecial (yytext))
222 {
223 setTokLength (1);
224 RETURN_TOK (0);
225 }
226 }
227 }
228"#" { if (handleSpecial (yytext))
229 {
230 setTokLength (1); RETURN_TOK (0);
231 }
232 }
233"..." { setTokLength (3); RETURN_TOK (CTOK_ELIPSIS); }
234"break" { setTokLength (5); RETURN_TOK (BREAK); }
235"case" { setTokLength (4); RETURN_TOK (CASE); }
236"continue" { setTokLength (8); RETURN_TOK (CONTINUE); }
237"default" { setTokLength (7); RETURN_TOK (DEFAULT); }
238"do" { setTokLength (2); RETURN_TOK (DO); }
239"else" { setTokLength (4); RETURN_TOK (CELSE); }
240"for" { setTokLength (3); RETURN_TOK (CFOR); }
241"goto" { setTokLength (4); RETURN_TOK (GOTO); }
242"if" { setTokLength (2); RETURN_TOK (CIF); }
243"return" { setTokLength (6); RETURN_TOK (RETURN); }
244"sizeof" { setTokLength (6); RETURN_TOK (CSIZEOF); }
245"offsetof" { setTokLength (8); RETURN_TOK (COFFSETOF); }
246"switch" { setTokLength (6); RETURN_TOK (SWITCH); }
247"while" { setTokLength (5); RETURN_TOK (WHILE); }
248"va_arg" { setTokLength (6); RETURN_TOK (VA_ARG); }
249"va_dcl" { setTokLength (6); RETURN_TOK (VA_DCL); }
250"inline" {
251 /* gcc extension...this might not be appropriate */
252 setTokLength (6); RETURN_TOK (QINLINE); }
253
254"struct" { setTokLength (6); RETURN_TOK (CSTRUCT); }
255"typedef" { setTokLength (7); RETURN_TOK (CTYPEDEF); }
256
257"union" { setTokLength (5); RETURN_TOK (CUNION); }
258"enum" { setTokLength (4); RETURN_TOK (CENUM); }
259
260"void" { setTokLength (4); RETURN_TYPE (CVOID, ctype_void); }
261"int" { setTokLength (3); RETURN_TYPE (CINT, ctype_int); }
262"double" { setTokLength (6); RETURN_TYPE (CDOUBLE, ctype_double); }
263"char" { setTokLength (4); RETURN_TYPE (CGCHAR, ctype_char); }
264"float" { setTokLength (5); RETURN_TYPE (CGFLOAT, ctype_float); }
265
266"long" { setTokLength (4); RETURN_TOK (QLONG); }
267"short" { setTokLength (5); RETURN_TOK (QSHORT); }
268"unsigned" { setTokLength (8); RETURN_TOK (QUNSIGNED); }
269"signed" { setTokLength (6); RETURN_TOK (QSIGNED); }
270
271"volatile" { setTokLength (8); RETURN_TOK (QVOLATILE); }
272"const" { setTokLength (5); RETURN_TOK (QCONST); }
f9264521 273"restrict" { setTokLength (8); RETURN_TOK (QRESTRICT); }
ac0860d8 274
275 /* some systems expect this! [gack!] */
276"__const" { setTokLength (7); RETURN_TOK (QCONST); }
277
278"extern" { setTokLength (6); RETURN_TOK (QEXTERN); }
279"auto" { setTokLength (4); RETURN_TOK (QAUTO); }
280"register" { setTokLength (8); RETURN_TOK (QREGISTER); }
281"static" { setTokLength (6); RETURN_TOK (QSTATIC); }
282
283\"(\\.|[^\\"])*\"([ \t\n]*\"(\\.|[^\\"])*\")* { RETURN_EXPR (processString ()); }
e0b363ad 284L\"(\\.|[^\\"])*\"([ \t\n]*\"(\\.|[^\\"])*\")* { RETURN_EXPR (processWideString ()); }
ac0860d8 285"out" { return (processSpec (QOUT)); }
286"in" { return (processSpec (QIN)); }
287"partial" { return (processSpec (QPARTIAL)); }
288"special" { return (processSpec (QSPECIAL)); }
289"anytype" { return (processSpec (QANYTYPE)); }
290"integraltype" { return (processSpec (QINTEGRALTYPE)); }
291"unsignedintegraltype" { return (processSpec (QUNSIGNEDINTEGRALTYPE)); }
292"signedintegraltype" { return (processSpec (QSIGNEDINTEGRALTYPE)); }
293"keep" { return (processSpec (QKEEP)); }
294"null" { return (processSpec (QNULL)); }
295"notnull" { return (processSpec (QNOTNULL)); }
296"isnull" { return (processSpec (QISNULL)); }
297"truenull" { return (processSpec (QTRUENULL)); }
298"falsenull" { return (processSpec (QFALSENULL)); }
0e41eb0e 299"nullwhentrue" { return (processSpec (QTRUENULL)); }
300"nullwhenfalse" { return (processSpec (QFALSENULL)); }
ac0860d8 301"relnull" { return (processSpec (QRELNULL)); }
302"reldef" { return (processSpec (QRELDEF)); }
303"exposed" { return (processSpec (QEXPOSED)); }
304"newref" { return (processSpec (QNEWREF)); }
305"tempref" { return (processSpec (QTEMPREF)); }
306"killref" { return (processSpec (QKILLREF)); }
307"refcounted" { return (processSpec (QREFCOUNTED)); }
308"checked" { return (processSpec (QCHECKED)); }
309"checkmod" { return (processSpec (QCHECKMOD)); }
310"checkedstrict" { return (processSpec (QCHECKEDSTRICT)); }
311"unchecked" { return (processSpec (QUNCHECKED)); }
312"only" { return (processSpec (QONLY)); }
313"owned" { return (processSpec (QOWNED)); }
314"observer" { return (processSpec (QOBSERVER)); }
315"dependent" { return (processSpec (QDEPENDENT)); }
316"unused" { return (processSpec (QUNUSED)); }
317"external" { return (processSpec (QEXTERNAL)); }
318"sef" { return (processSpec (QSEF)); }
319"shared" { return (processSpec (QSHARED)); }
320"yield" { return (processSpec (QYIELD)); }
321"undef" { return (processSpec (QUNDEF)); }
322"killed" { return (processSpec (QKILLED)); }
323"nullterminated" { return (processSpec (QNULLTERMINATED));}
324"MaxSet" { return (processSpec (QMAXSET));}
325"MaxRead" { return (processSpec (QMAXREAD));}
326"maxSet" { return (processSpec (QMAXSET));}
327"maxRead" { return (processSpec (QMAXREAD));}
328
329{Letter}({Letter}|{Digit})* { int tok;
330 context_saveLocation ();
331 setTokLength (longUnsigned_toInt (mstring_length (yytext)));
332 tok = processIdentifier (makeIdentifier (yytext));
333 if (tok != BADTOK)
334 {
335 return (tok);
336 }
337 }
3380[xX]{H}+ { setTokLengthT (mstring_length (yytext));
339 RETURN_INT (ctype_int, processHex ()); /* evs 2000-05-17 was ctype_uint */
340 }
3410[xX]{H}+{L} { setTokLengthT (mstring_length (yytext));
342 RETURN_INT (ctype_lint, processHex ()); }
3430[xX]{H}+{L}{L} { setTokLengthT (mstring_length (yytext));
344 RETURN_INT (ctype_llint, processHex ()); }
3450[xX]{H}+{U} { setTokLengthT (mstring_length (yytext));
346 RETURN_INT (ctype_uint, processHex ()); }
3470[xX]{H}+{ULSuffix} { setTokLengthT (mstring_length (yytext));
348 RETURN_INT (ctype_ulint, processHex ()); }
3490[xX]{H}+{U}{L}{L} { setTokLengthT (mstring_length (yytext));
350 RETURN_INT (ctype_ullint, processHex ()); }
3510[xX]{H}+{L}{L}{U} { setTokLengthT (mstring_length (yytext));
352 RETURN_INT (ctype_ullint, processHex ()); }
3530{Digit}+ { setTokLengthT (mstring_length (yytext));
354 RETURN_INT (ctype_int, processOctal ()); }
3550{Digit}+{U} { setTokLengthT (mstring_length (yytext));
356 RETURN_INT (ctype_uint, processOctal ()); }
3570{Digit}+{L} { setTokLengthT (mstring_length (yytext));
358 RETURN_INT (ctype_lint, processOctal ()); }
3590{Digit}+{L}{L} { setTokLengthT (mstring_length (yytext));
360 RETURN_INT (ctype_llint, processOctal ()); }
3610{Digit}+{ULSuffix} { setTokLengthT (mstring_length (yytext));
362 RETURN_INT (ctype_ulint, processOctal ()); }
3630{Digit}+{U}{L}{L} { setTokLengthT (mstring_length (yytext));
364 RETURN_INT (ctype_ullint, processOctal ()); }
3650{Digit}+{L}{L}{U} { setTokLengthT (mstring_length (yytext));
366 RETURN_INT (ctype_ullint, processOctal ()); }
367{Digit}+ { setTokLengthT (mstring_length (yytext));
368 RETURN_INT (ctype_int, processDec ()); }
369{Digit}+{U} { setTokLengthT (mstring_length (yytext));
370 RETURN_INT (ctype_uint, processDec ()); }
371{Digit}+{L} { setTokLengthT (mstring_length (yytext));
372 RETURN_INT (ctype_lint, processDec ()); }
373{Digit}+{L}{L} { setTokLengthT (mstring_length (yytext));
374 RETURN_INT (ctype_llint, processDec ()); }
375{Digit}+{ULSuffix} { setTokLengthT (mstring_length (yytext));
376 RETURN_INT (ctype_ulint, processDec ()); }
377{Digit}+{U}{L}{L} { setTokLengthT (mstring_length (yytext));
378 RETURN_INT (ctype_ullint, processDec ()); }
379{Digit}+{L}{L}{U} { setTokLengthT (mstring_length (yytext));
380 RETURN_INT (ctype_ullint, processDec ()); }
381'(\\.|[^\\'])+' { setTokLengthT (mstring_length (yytext));
382 RETURN_CHAR (processChar ()); }
383L'(\\.|[^\\'])+' { setTokLengthT (mstring_length (yytext));
384 RETURN_CHAR (processChar ()); }
385{Digit}+{E}[fF] { setTokLengthT (mstring_length (yytext));
386 RETURN_FLOAT (ctype_float, processFloat ()); }
387{Digit}+{E}[lL] { setTokLengthT (mstring_length (yytext));
388 RETURN_FLOAT (ctype_ldouble, processFloat ()); }
389{Digit}+{E} { setTokLengthT (mstring_length (yytext));
390 RETURN_FLOAT (ctype_double, processFloat ()); }
391
392{Digit}*"."{Digit}+({E})?[fF] { setTokLengthT (mstring_length (yytext));
393 RETURN_FLOAT (ctype_float, processFloat ()); }
394{Digit}*"."{Digit}+({E})?[lL] { setTokLengthT (mstring_length (yytext));
395 RETURN_FLOAT (ctype_ldouble, processFloat ()); }
396{Digit}*"."{Digit}+({E})? { setTokLengthT (mstring_length (yytext));
397 RETURN_FLOAT (ctype_double, processFloat ()); }
398
399{Digit}+"."{Digit}*({E})?[fF] { setTokLengthT (mstring_length (yytext));
400 RETURN_FLOAT (ctype_float, processFloat ()); }
401{Digit}+"."{Digit}*({E})?[lL] { setTokLengthT (mstring_length (yytext));
402 RETURN_FLOAT (ctype_ldouble, processFloat ()); }
403{Digit}+"."{Digit}*({E})? { setTokLengthT (mstring_length (yytext));
404 RETURN_FLOAT (ctype_double, processFloat ()); }
405
406">>=" { setTokLength (3); RETURN_TOK (RIGHT_ASSIGN); }
407"<<=" { setTokLength (3); RETURN_TOK (LEFT_ASSIGN); }
408"+=" { setTokLength (2); RETURN_TOK (ADD_ASSIGN); }
409"-=" { setTokLength (2); RETURN_TOK (SUB_ASSIGN); }
410"*=" { setTokLength (2); RETURN_TOK (MUL_ASSIGN); }
411"/=" { setTokLength (2); RETURN_TOK (DIV_ASSIGN); }
412"%=" { setTokLength (2); RETURN_TOK (MOD_ASSIGN); }
413"&=" { setTokLength (2); RETURN_TOK (AND_ASSIGN); }
414"^=" { setTokLength (2); RETURN_TOK (XOR_ASSIGN); }
415"|=" { setTokLength (2); RETURN_TOK (OR_ASSIGN); }
416">>" { setTokLength (2); RETURN_TOK (RIGHT_OP); }
417"<<" { setTokLength (2); RETURN_TOK (LEFT_OP); }
418"++" { setTokLength (2); RETURN_TOK (INC_OP); }
419"--" { setTokLength (2); RETURN_TOK (DEC_OP); }
420"->" { setTokLength (2); RETURN_TOK (ARROW_OP); }
421"&&" { setTokLength (2); RETURN_TOK (AND_OP); }
422"||" { setTokLength (2); RETURN_TOK (OR_OP); }
423"<=" { setTokLength (2); RETURN_TOK (LE_OP); }
424">=" { setTokLength (2); RETURN_TOK (GE_OP); }
425"==" { setTokLength (2); RETURN_TOK (EQ_OP); }
426"!=" { setTokLength (2); RETURN_TOK (NE_OP); }
427";" { setTokLength (1); RETURN_TOK (TSEMI); }
428"{" { setTokLength (1); RETURN_TOK (TLBRACE); }
429"}" { setTokLength (1); RETURN_TOK (TRBRACE); }
430"," { setTokLength (1); RETURN_TOK (TCOMMA); }
431":" { setTokLength (1); RETURN_TOK (TCOLON); }
432"=" { setTokLength (1); RETURN_TOK (TASSIGN); }
433"(" { setTokLength (1); RETURN_TOK (TLPAREN); }
434")" { setTokLength (1); RETURN_TOK (TRPAREN); }
435"[" { setTokLength (1); RETURN_TOK (TLSQBR); }
436"]" { setTokLength (1); RETURN_TOK (TRSQBR); }
437"." { setTokLength (1); RETURN_TOK (TDOT); }
438"&" { setTokLength (1); RETURN_TOK (TAMPERSAND); }
439"!" { setTokLength (1); RETURN_TOK (TEXCL); }
440
441
442"~" { setTokLength (1); RETURN_TOK (TTILDE); }
443"-" { setTokLength (1); RETURN_TOK (TMINUS); }
444"+" { setTokLength (1); RETURN_TOK (TPLUS); }
445"*" { setTokLength (1); RETURN_TOK (TMULT); }
446"/" { setTokLength (1); RETURN_TOK (TDIV); }
447"%" { setTokLength (1); RETURN_TOK (TPERCENT); }
448"<" { setTokLength (1); RETURN_TOK (TLT); }
449">" { setTokLength (1); RETURN_TOK (TGT); }
450"^" { setTokLength (1); RETURN_TOK (TCIRC); }
451"|" { setTokLength (1); RETURN_TOK (TBAR); }
452"?" { setTokLength (1); RETURN_TOK (TQUEST); }
453
454
455"/\\" { setTokLength (1); RETURN_TOK (TCAND); }
456
457
458[ \t\v\f] { incColumn (); }
459\n { context_incLineno ();
460 if (tokLength != 0) {
461 tokLength = 0;
462 /* No error to report
463 voptgenerror
464 (FLG_SYNTAX,
465 message ("Likely parse error: token spans multiple lines."),
466 g_currentloc);
467 */
468 }
469
470 if (continueLine)
471 {
472 continueLine = FALSE;
473 }
474 else
475 {
476 if (context_inMacro ())
477 {
478 /* Don't use RETURN_TOK */
80489f0a 479 yylval.tok = lltok_create (TENDMACRO, fileloc_copy (g_currentloc)); /* !!! evans 2002-03-13 */
ac0860d8 480 lastWasString = FALSE;
481 return (TENDMACRO);
482 }
483 }
484 }
485"@@MR@@" { setTokLength (6);
486
487 if (processMacro ()) {
488 if (context_inIterDef ())
489 {
490 RETURN_TOK (LLMACROITER);
491 }
492 if (context_inIterEnd ())
493 {
494 RETURN_TOK (LLMACROEND);
495 }
496 if (context_inMacro ())
497 {
498 RETURN_TOK (LLMACRO);
499 }
500 }
501 }
502"@QLMR" { if (context_inHeader () || context_inFunction ())
503 {
504 handleMacro ();
505 }
506 else
507 {
508 int nspchar = ninput ();
509 int nspaces;
510
511 /*
512 ** This is a hack to get the column number correct.
513 */
514
515 llassert (nspchar >= '0' && nspchar <= '9');
516
517 nspaces = nspchar - '0';
518
519 setTokLength (5 + nspaces);
520
521 if (processMacro ())
522 {
a469ccf0 523 DPRINTF (("Here we are: %s", context_unparse ()));
524
ac0860d8 525 if (context_inIterDef ())
526 {
527 RETURN_TOK (LLMACROITER);
528 }
529 if (context_inIterEnd ())
530 {
531 RETURN_TOK (LLMACROEND);
532 }
533 if (context_inMacro ())
534 {
535 RETURN_TOK (LLMACRO);
536 }
537 }
538 }
539 }
540"@.CT" { setTokLength (4); lldiagmsg (ctype_unparseTable ()); }
541"@.FA" { setTokLength (4); lldiagmsg (message ("Access types: %q", typeIdSet_unparse (context_fileAccessTypes ()))); }
542"@.F" { setTokLength (3);
543 lldiagmsg (message ("%q: *** marker ***", fileloc_unparse (g_currentloc)));
544 }
545"@.L" { setTokLength (3); usymtab_printLocal (); }
546"@.A" { setTokLength (3); lldiagmsg (usymtab_unparseAliases ()); }
547"@.C" { setTokLength (3); lldiagmsg (context_unparse ()); }
548"@.W" { setTokLength (3); lldiagmsg (context_unparseClauses ()); }
549"@.G" { setTokLength (3); usymtab_printGuards (); }
550"@.S" { setTokLength (3); usymtab_printOut (); }
551"@.X" { setTokLength (3); usymtab_printAll (); }
552"@.Z" { setTokLength (3); usymtab_printComplete (); }
553"@.T" { setTokLength (3); usymtab_printTypes (); }
554"@.K" { setTokLength (3); lldiagmsg (usymtab_unparseStack ()); }
555"@.M" { setTokLength (3);
556 lldiagmsg (message ("Can modify: %q",
557 sRefSet_unparse (context_modList ())));
558 }
559"%{" { /* BEFORE_COMMENT_MARKER */
560 int tok;
561 incColumn (); incColumn ();
562 tok = handleLlSpecial ();
563
564 if (tok != BADTOK)
565 {
566 if (tok == CANNOTATION) {
567 return (tok);
568 } else {
569 /* Beware - this bashes yylval! */
570 RETURN_TOK (tok);
571 }
572 }
573 }
574"%}" { /* AFTER_COMMENT_MARKER */
575 setTokLength (2);
2f2892c2 576 s_inSpecPart = FALSE;
577 s_whichSpecPart = BADTOK;
ac0860d8 578 RETURN_TOK (QENDMACRO); }
579"\\" { incColumn (); continueLine = TRUE; }
580. { incColumn ();
581 if ((int) *yytext == 13 ) {
582 ;
583 } else {
584 voptgenerror
585 (FLG_SYNTAX,
586 message ("Invalid character (ascii: %d), skipping character",
587 (int)(*yytext)),
588 g_currentloc);
589 }
590 }
591%%
592
6fcd0b1e 593/*
594** Resets flags set by flex.head.
595*/
596
597/*@=allmacros@*/
598/*@=pred@*/
599/*@=globstate@*/
600/*@=null@*/
601/*@=boolint@*/
602/*@=charint@*/
603/*@=macrospec@*/
604/*@=macroredef@*/
605/*@=exitarg@*/
606/*@=compdef@*/
607/*@=uniondef@*/
608/*@=ignorequals@*/
609/*@=noreturn@*/
610/*@=mustfree@*/
611/*@=compdestroy@*/
612/*@=branchstate@*/
613/*@=unreachable@*/
614/*@=varuse@*/
615/*@=fcnuse@*/
616/*@=exportlocal@*/
617/*@=evalorderuncon@*/
618/*@=exportheader@*/
619/*@=redecl@*/
620/*@=loopswitchbreak@*/
621/*@=switchswitchbreak@*/
622/*@=sizeoftype@*/
623/*@=czechfcns@*/
624/*@=noparams@*/
625/*@=ansireserved@*/
626/*@=ifblock@*/
627/*@=whileblock@*/
628/*@=forblock@*/
629/*@=elseifcomplete@*/
630/*@=ptrnegate@*/
631/*@=onlytrans@*/
632/*@=temptrans@*/
633/*@=immediatetrans@*/
634/*@=namechecks@*/
635/*@=matchanyintegral@*/
636/*@=statictrans@*/
637/*@=compmempass@*/
638/*@=forempty@*/
639/*@=evalorder@*/
640/*@=retalias@*/
641/*@=redecl@*/
642/*@=retvalother@*/
643/*@=exportheader@*/
644
ac0860d8 645struct skeyword
646{
647 /*@null@*/ /*@observer@*/ char *name;
648 int token;
649} ;
650
651/*
652** These tokens are followed by syntax that is parsed by the
653** grammar proper.
654*/
655
6fcd0b1e 656static struct skeyword s_parsetable[] = {
ac0860d8 657 { "modifies", QMODIFIES } ,
658 { "globals", QGLOBALS } ,
659 { "alt", QALT } ,
660 { "warn", QWARN } ,
661 { "constant", QCONSTANT } ,
662 { "function", QFUNCTION } ,
663 { "iter", QITER } ,
664 { "defines", QDEFINES } ,
665 { "uses", QUSES } ,
666 { "allocates", QALLOCATES } ,
667 { "sets", QSETS } ,
668 { "releases", QRELEASES } ,
669 { "pre", QPRECLAUSE } ,
670 { "post", QPOSTCLAUSE } ,
671 { "setBufferSize", QSETBUFFERSIZE},
672 { "setStringLength", QSETSTRINGLENGTH},
673 { "testinRange", QTESTINRANGE},
674 { "requires", QPRECLAUSE } ,
675 { "ensures", QPOSTCLAUSE } ,
86d93ed3 676 { "invariant", QINVARIANT} ,
ac0860d8 677 { NULL, BADTOK }
678} ;
679
680/*
681** These tokens are either stand-alone tokens, or followed by
682** token-specific text.
683*/
684
6fcd0b1e 685static struct skeyword s_keytable[] = {
ac0860d8 686 { "anytype", QANYTYPE } ,
687 { "integraltype", QINTEGRALTYPE } ,
688 { "unsignedintegraltype", QUNSIGNEDINTEGRALTYPE } ,
689 { "signedintegraltype", QSIGNEDINTEGRALTYPE } ,
690 { "out", QOUT } ,
691 { "in", QIN } ,
692 { "only", QONLY } ,
693 { "owned", QOWNED } ,
694 { "dependent", QDEPENDENT } ,
695 { "partial", QPARTIAL } ,
696 { "special", QSPECIAL } ,
697 { "truenull", QTRUENULL } ,
698 { "falsenull", QFALSENULL } ,
0e41eb0e 699 { "nullwhentrue", QTRUENULL } ,
700 { "falsewhennull", QFALSENULL } ,
ac0860d8 701 { "keep", QKEEP } ,
702 { "kept", QKEPT } ,
703 { "notnull", QNOTNULL } ,
704 { "abstract", QABSTRACT } ,
705 { "concrete", QCONCRETE } ,
706 { "mutable", QMUTABLE } ,
707 { "immutable", QIMMUTABLE } ,
708 { "unused", QUNUSED } ,
709 { "external", QEXTERNAL } ,
710 { "sef", QSEF } ,
711 { "unique", QUNIQUE } ,
712 { "returned", QRETURNED } ,
713 { "exposed", QEXPOSED } ,
714 { "refcounted", QREFCOUNTED } ,
715 { "refs", QREFS } ,
716 { "newref", QNEWREF } ,
717 { "tempref", QTEMPREF } ,
718 { "killref", QKILLREF } ,
719 { "null", QNULL } ,
720 { "relnull", QRELNULL } ,
721 { "nullterminated", QNULLTERMINATED },
722 { "setBufferSize", QSETBUFFERSIZE },
723 { "testInRange", QTESTINRANGE},
2f2892c2 724 { "isnull", QISNULL },
ac0860d8 725 { "MaxSet", QMAXSET},
726 { "MaxRead", QMAXREAD},
2f2892c2 727 { "maxSet", QMAXSET},
728 { "maxRead", QMAXREAD},
ac0860d8 729 { "reldef", QRELDEF } ,
730 { "observer", QOBSERVER } ,
731 { "exits", QEXITS } ,
27c9e640 732 { "noreturn", QEXITS } ,
ac0860d8 733 { "mayexit", QMAYEXIT } ,
27c9e640 734 { "maynotreturn", QMAYEXIT } ,
ac0860d8 735 { "trueexit", QTRUEEXIT } ,
736 { "falseexit", QFALSEEXIT } ,
27c9e640 737 { "noreturnwhentrue", QTRUEEXIT } ,
738 { "noreturnwhenfalse", QFALSEEXIT } ,
ac0860d8 739 { "neverexit", QNEVEREXIT } ,
27c9e640 740 { "alwaysreturns", QNEVEREXIT } ,
ac0860d8 741 { "temp", QTEMP } ,
742 { "shared", QSHARED } ,
743 { "ref", QREF } ,
744 { "unchecked", QUNCHECKED } ,
745 { "checked", QCHECKED } ,
746 { "checkmod", QCHECKMOD } ,
747 { "checkedstrict", QCHECKEDSTRICT } ,
748 { "innercontinue", QINNERCONTINUE } ,
749 { "innerbreak", QINNERBREAK } ,
750 { "loopbreak", QLOOPBREAK } ,
751 { "switchbreak", QSWITCHBREAK } ,
752 { "safebreak", QSAFEBREAK } ,
753 { "fallthrough", QFALLTHROUGH } ,
754 { "l_fallthrou", QLINTFALLTHROUGH } ,
755 { "l_fallth", QLINTFALLTHRU } ,
756 { "notreached", QNOTREACHED } ,
757 { "l_notreach", QLINTNOTREACHED } ,
758 { "printflike", QPRINTFLIKE } ,
759 { "l_printfli", QLINTPRINTFLIKE } ,
760 { "scanflike", QSCANFLIKE } ,
761 { "messagelike", QMESSAGELIKE } ,
762 { "l_argsus", QARGSUSED } ,
763 { NULL, BADTOK }
764} ;
765
766/*
767** would be better if these weren't hard coded...
768*/
769
770static bool isArtificial (cstring s)
771{
772 return (cstring_equalLit (s, "modifies")
773 || cstring_equalLit (s, "globals")
774 || cstring_equalLit (s, "warn")
775 || cstring_equalLit (s, "alt"));
776}
777
6fcd0b1e 778void cscanner_swallowMacro (void)
ac0860d8 779{
780 int i;
781 bool skipnext = FALSE;
782
783 while ((i = lminput ()) != EOF)
784 {
785 char c = (char) i;
786
ac0860d8 787 if (c == '\\')
788 {
789 skipnext = TRUE;
790 }
791 else if (c == '\n')
792 {
793 if (skipnext)
794 {
795 skipnext = FALSE;
796 }
797 else
798 {
799 reader_checkUngetc (i, yyin);
800 return;
801 }
802 }
6fcd0b1e 803 else
804 {
805 ;
806 }
ac0860d8 807 }
808
809 if (i != EOF)
810 {
811 reader_checkUngetc (i, yyin);
812 }
813}
814
815static int commentMarkerToken (cstring s)
816{
817 int i = 0;
818
819 while (s_parsetable[i].name != NULL)
820 {
821 DPRINTF (("Try :%s:%s:", s, s_parsetable[i].name));
822
823 if (cstring_equalLit (s, s_parsetable[i].name))
824 {
825 return s_parsetable[i].token;
826 }
827
828 i++;
829 }
830
831 return BADTOK;
832}
833
834static int tokenMacroCode (cstring s)
835{
836 int i = 0;
837
838 while (s_keytable[i].name != NULL)
839 {
840 if (cstring_equalLit (s, s_keytable[i].name))
841 {
842 if (s_keytable[i].token == QLINTFALLTHROUGH)
843 {
844 voptgenerror
845 (FLG_WARNLINTCOMMENTS,
846 cstring_makeLiteral
1b8ae690 847 ("Traditional lint comment /*FALLTHROUGH*/ used. "
848 "Splint interprets this in the same way as most Unix lints, but it is "
ac0860d8 849 "preferable to replace it with the /*@fallthrough@*/ "
850 "semantic comment"),
851 g_currentloc);
852 return QFALLTHROUGH;
853 }
854 else if (s_keytable[i].token == QLINTFALLTHRU)
855 {
856 voptgenerror
857 (FLG_WARNLINTCOMMENTS,
858 cstring_makeLiteral
1b8ae690 859 ("Traditional lint comment /*FALLTHRU*/ used. "
860 "Splint interprets this in the same way as most Unix lints, but it is "
ac0860d8 861 "preferable to replace it with the /*@fallthrough@*/ "
862 "semantic comment"),
863 g_currentloc);
864 return QFALLTHROUGH;
865 }
866 else if (s_keytable[i].token == QLINTNOTREACHED)
867 {
868 voptgenerror
869 (FLG_WARNLINTCOMMENTS,
870 cstring_makeLiteral
1b8ae690 871 ("Traditional lint comment /*NOTREACHED*/ used. "
872 "Splint interprets this in the same way as most Unix lints, but it is "
ac0860d8 873 "preferable to replace it with the /*@notreached@*/ "
874 "semantic comment."),
875 g_currentloc);
876
877 return QNOTREACHED;
878 }
879 else if (s_keytable[i].token == QPRINTFLIKE)
880 {
881 setSpecialFunction (qual_createPrintfLike ());
882 return SKIPTOK;
883 }
884 else if (s_keytable[i].token == QLINTPRINTFLIKE)
885 {
886 voptgenerror
887 (FLG_WARNLINTCOMMENTS,
888 cstring_makeLiteral
1b8ae690 889 ("Traditional lint comment /*PRINTFLIKE*/ used. "
890 "Splint interprets this in the same way as most Unix lints, but it is "
ac0860d8 891 "preferable to replace it with either /*@printflike@*/, "
892 "/*@scanflike@*/ or /*@messagelike@*/."),
893 g_currentloc);
894
895 setSpecialFunction (qual_createPrintfLike ());
896 return SKIPTOK;
897 }
898 else if (s_keytable[i].token == QSCANFLIKE)
899 {
900 setSpecialFunction (qual_createScanfLike ());
901 return SKIPTOK;
902 }
903 else if (s_keytable[i].token == QMESSAGELIKE)
904 {
905 setSpecialFunction (qual_createMessageLike ());
906 return SKIPTOK;
907 }
908 else if (s_keytable[i].token == QARGSUSED)
909 {
910 voptgenerror
911 (FLG_WARNLINTCOMMENTS,
912 cstring_makeLiteral
1b8ae690 913 ("Traditional lint comment /*ARGSUSED*/ used. "
914 "Splint interprets this in the same way as most Unix lints, but it is "
ac0860d8 915 "preferable to use /*@unused@*/ annotations on "
916 "the unused parameters."),
917 g_currentloc);
918
919 setArgsUsed ();
920 return SKIPTOK;
921 }
6fcd0b1e 922 else
923 {
924 return s_keytable[i].token;
925 }
ac0860d8 926 }
6fcd0b1e 927
ac0860d8 928 i++;
929 }
930
931 return BADTOK;
932}
933
934static int lminput ()
935{
936 if (savechar == '\0')
937 {
938 incColumn ();
939 return (input ());
940 }
941 else
942 {
943 int save = (int) savechar;
944 savechar = '\0';
945 return save;
946 }
947}
948
949static void lmsavechar (char c)
950{
951 if (savechar == '\0') savechar = c;
952 else
953 {
954 llbuglit ("lmsavechar: override");
955 }
956}
957
958static int returnFloat (ctype ct, double f)
959{
960 yylval.expr = exprNode_floatLiteral (f, ct, cstring_fromChars (yytext),
961 fileloc_decColumn (g_currentloc, tokLength));
962 tokLength = 0;
963 return (CCONSTANT);
964}
965
966static int returnInt (ctype ct, long i)
967{
968 ctype c = ct;
969
970 if (ctype_equal (ct, ctype_int))
971 {
972 if (i == 0)
973 {
974 c = context_typeofZero ();
975 }
976 else if (i == 1)
977 {
978 c = context_typeofOne ();
979 }
6fcd0b1e 980 else
981 {
982 ;
983 }
ac0860d8 984 }
985
986 yylval.expr = exprNode_numLiteral (c, cstring_fromChars (yytext),
987 fileloc_decColumn (g_currentloc, tokLength), i);
988 tokLength = 0;
989 return (CCONSTANT);
990}
991
992static int returnChar (char c)
993{
994 yylval.expr = exprNode_charLiteral (c, cstring_fromChars (yytext),
995 fileloc_decColumn (g_currentloc, tokLength));
996 tokLength = 0;
997 return (CCONSTANT);
998}
999
1000static int ninput ()
1001{
1002 int c = lminput ();
1003
1004 if (c != EOF && ((char)c == '\n'))
1005 {
1006 context_incLineno ();
1007 }
1008
1009 return c;
1010}
1011
6fcd0b1e 1012static char macro_nextChar (void)
ac0860d8 1013{
1014 static bool in_quote = FALSE, in_escape = FALSE, in_char = FALSE;
1015 int ic;
1016 char c;
1017
1018 ic = lminput ();
1019 c = char_fromInt (ic);
1020
1021 if (!in_quote && !in_char && (c == '\\' || c == BEFORE_COMMENT_MARKER[0]))
1022 {
1023 if (c == '\\')
1024 {
1025 while ((c = char_fromInt (lminput ())) != '\0' && c != '\n')
1026 {
1027 ; /* skip to newline */
1028 }
1029
1030 context_incLineno ();
1031
1032 if (c != '\0')
1033 {
1034 return macro_nextChar ();
1035 }
1036 else
1037 {
1038 return c;
1039 }
1040 }
1041 else /* if (c == '@') */
1042 {
1043 llassert (FALSE); /*@i23@*/
1044 if (handleLlSpecial () != BADTOK)
1045 {
1046 llerrorlit (FLG_SYNTAX, "Macro cannot use special syntax");
1047 }
1048
1049 return macro_nextChar ();
1050 }
1051 }
1052 else if (!in_escape && c == '\"')
1053 {
1054 in_quote = !in_quote;
1055 }
1056 else if (!in_escape && c == '\'')
1057 {
1058 in_char = !in_char;
1059 }
1060 else if ((in_quote || in_char) && c == '\\')
1061 {
1062 in_escape = !in_escape;
1063 }
1064 else if ((in_quote || in_char) && in_escape)
1065 {
1066 in_escape = FALSE;
1067 }
1068 else if (!in_quote && c == '/')
1069 {
1070 char c2;
1071
1072 if ((c2 = char_fromInt (lminput ())) == '*')
1073 {
1074 while (c2 != '\0')
1075 {
1076 while ((c2 = char_fromInt (lminput ())) != '\0'
1077 && c2 != '\n' && c2 != '*')
1078 {
1079 ;
1080 }
1081
1082 if (c2 == '*')
1083 {
1084 while ((c2 = char_fromInt (lminput ())) != '\0'
1085 && c2 == '*')
1086 {
1087 ;
1088 }
1089
1090 if (c2 == '/')
1091 {
1092 goto outofcomment;
1093 }
1094 }
1095 else
1096 {
1097 llfatalerror (cstring_makeLiteral ("Macro: bad comment!"));
1098 }
1099 }
1100 outofcomment:
1101 return macro_nextChar ();
1102 }
1103 else
1104 {
1105 /*** putchar does not work! why? puts to stdio...??! ***/
1106 lmsavechar (c2);
1107 }
1108 }
6fcd0b1e 1109 else
1110 {
1111 ;
1112 }
1113
ac0860d8 1114 return c;
1115}
1116
1117/*
1118** keeps semantic comments
1119*/
1120
6fcd0b1e 1121static char macro_nextCharC (void)
ac0860d8 1122{
1123 static bool in_quote = FALSE, in_escape = FALSE, in_char = FALSE;
1124 char c;
1125
1126 c = char_fromInt (lminput ());
1127
1128 if (!in_quote && !in_char && c == '\\')
1129 {
1130 while ((c = char_fromInt (lminput ())) != '\0' && c != '\n')
1131 {
1132 ; /* skip to newline */
1133 }
1134
1135 context_incLineno ();
1136
1137 if (c != '\0')
1138 {
1139 return macro_nextCharC ();
1140 }
1141 else
1142 {
1143 return c;
1144 }
1145 }
1146 else if (!in_escape && c == '\"')
1147 {
1148 in_quote = !in_quote;
1149 }
1150 else if (!in_escape && c == '\'')
1151 {
1152 in_char = !in_char;
1153 }
1154 else if ((in_quote || in_char) && c == '\\')
1155 {
1156 in_escape = !in_escape;
1157 }
1158 else if ((in_quote || in_char) && in_escape)
1159 {
1160 in_escape = FALSE;
1161 }
1162 else if (!in_quote && c == '/')
1163 {
1164 char c2;
1165
1166 if ((c2 = char_fromInt (lminput ())) == '*')
1167 {
1168 while (c2 != '\0')
1169 {
1170 while ((c2 = char_fromInt (lminput ())) != '\0'
1171 && c2 != '\n' && c2 != '*')
1172 {
1173 ;
1174 }
1175
1176 if (c2 == '*')
1177 {
1178 while ((c2 = char_fromInt (lminput ())) != '\0'
1179 && c2 == '*')
1180 {
1181 ;
1182 }
1183
1184 if (c2 == '/')
1185 {
1186 goto outofcomment;
1187 }
1188 }
1189 else
1190 {
1191 llfatalerror (cstring_makeLiteral ("Macro: bad comment!"));
1192 }
1193 }
1194 outofcomment:
1195 return macro_nextCharC ();
1196 }
1197 else
1198 {
1199 lmsavechar (c2);
1200 }
1201 }
6fcd0b1e 1202 else /* normal character */
1203 {
1204 ;
1205 }
1206
ac0860d8 1207 return c;
1208}
1209
1210/*
1211** skips whitespace (handles line continuations)
1212** returns first non-whitespace character
1213*/
1214
6fcd0b1e 1215static char skip_whitespace (void)
ac0860d8 1216{
1217 char c;
1218
1219 while ((c = macro_nextChar ()) == ' ' || c == '\t')
1220 {
1221 ;
1222 }
1223
1224 return c;
1225}
1226
1227static void handleMacro ()
1228{
1229 cstring mac = cstring_undefined;
1230 int macrocode;
1231 char c;
1232
1233 while (currentColumn () > 2)
1234 {
1235 mac = cstring_appendChar (mac, ' ');
1236 setTokLength (-1);
1237 }
1238
1239 c = macro_nextCharC ();
1240
1241 if (c >= '0' && c <= '9')
1242 {
1243 int i;
1244
6fcd0b1e 1245 for (i = 0; i < (((int) (c - '0')) + 1); i++)
ac0860d8 1246 {
1247 mac = cstring_appendChar (mac, ' ');
1248 }
1249 }
1250 else
1251 {
1252 BADBRANCH;
1253 }
1254
1255 while (((c = macro_nextCharC ()) != '\0') && (c != '\n'))
1256 {
1257 mac = cstring_appendChar (mac, c);
1258 }
1259
1260
1261 macrocode = tokenMacroCode (mac);
1262
1263 if (macrocode == BADTOK && !isArtificial (mac))
1264 {
1265 context_addMacroCache (mac);
1266 }
1267 else
1268 {
1269 cstring_free (mac);
1270 }
1271
1272 if (c == '\n')
1273 {
1274 context_incLineno ();
1275 }
1276}
1277
1278static bool processMacro (void)
1279{
1280 uentry e2;
1281 ctype ct;
1282 int noparams = 0;
1283 cstring fname = cstring_undefined;
1284 bool res = TRUE;
1285 bool isspecfcn = FALSE;
1286 bool isiter = FALSE;
1287 bool skipparam = FALSE;
1288 bool isenditer = FALSE;
1289 bool unknownm = FALSE;
1290 bool hasParams = FALSE;
1291 bool emptyMacro = FALSE;
1292 char c = skip_whitespace ();
1293 fileloc loc = fileloc_noColumn (g_currentloc);
1294
1295 /* are both of these necessary? what do they mean? */
1296 uentryList specparams = uentryList_undefined;
1297 uentryList pn = uentryList_undefined;
1298
1299 context_resetMacroMissingParams ();
1300
1301 if (c == '\0' || c == '\n')
1302 {
1303 llcontbug (cstring_makeLiteral ("Bad macro"));
1304 fileloc_free (loc);
1305 return FALSE;
1306 }
1307
1308 fname = cstring_appendChar (fname, c);
1309
1310 while ((c = macro_nextChar ()) != '(' && c != '\0'
1311 && c != ' ' && c != '\t' && c != '\n')
1312 {
1313 fname = cstring_appendChar (fname, c);
1314 }
1315
1316 if (c == ' ' || c == '\t' || c == '\n')
1317 {
1318 char oldc = c;
1319
1320 if (c != '\n')
1321 {
1322 while (c == ' ' || c == '\t')
1323 {
1324 c = macro_nextChar ();
1325 }
6fcd0b1e 1326 unput ((int) c);
ac0860d8 1327 }
1328
1329 if (c == '\n')
1330 {
1331 emptyMacro = TRUE;
6fcd0b1e 1332 unput ((int) c);
ac0860d8 1333 }
1334
1335 c = oldc;
1336 }
1337
1338 hasParams = (c == '(');
1339
1340 if (usymtab_exists (fname))
1341 {
1342 e2 = usymtab_lookupExpose (fname);
1343 ct = uentry_getType (e2);
1344
1345 if (uentry_isCodeDefined (e2)
1346 && fileloc_isUser (uentry_whereDefined (e2)))
1347 {
1348 if (optgenerror
1349 (FLG_MACROREDEF,
1350 message ("Macro %s already defined", fname),
1351 loc))
1352 {
1353 uentry_showWhereDefined (e2);
1354 uentry_clearDefined (e2);
1355 }
1356
1357 if (uentry_isFunction (e2))
1358 {
1359 uentry_setType (e2, ctype_unknown);
1360 ct = ctype_unknown;
1361 unknownm = TRUE;
1362 context_enterUnknownMacro (e2);
1363 }
1364 else
1365 {
1366 context_enterConstantMacro (e2);
1367 }
1368 }
1369 else
1370 {
1371 if (uentry_isForward (e2) && uentry_isFunction (e2))
1372 {
1373 unknownm = TRUE;
1374
1375 voptgenerror
1376 (FLG_MACROFCNDECL,
1377 message
1378 ("Parameterized macro has no prototype or specification: %s ",
1379 fname),
1380 loc);
1381
1382 ct = ctype_unknown;
1383 uentry_setType (e2, ctype_unknown);
1384 uentry_setFunctionDefined (e2, loc);
1385 uentry_setUsed (e2, fileloc_undefined);
1386 context_enterUnknownMacro (e2);
1387 }
1388 else
1389 {
1390 if (uentry_isIter (e2))
1391 {
1392 isiter = TRUE;
1393 specparams = uentry_getParams (e2);
1394 noparams = uentryList_size (specparams);
1395 uentry_setDefined (e2, loc);
1396 context_enterIterDef (e2);
1397 }
1398 else if (uentry_isEndIter (e2))
1399 {
1400 isenditer = TRUE;
1401 uentry_setDefined (e2, loc);
1402 context_enterIterEnd (e2); /* don't care about it now */
1403 /* but should parse like an iter! */
1404 }
1405 else if (uentry_isConstant (e2))
1406 {
1407 if (hasParams)
1408 {
1409 voptgenerror
1410 (FLG_INCONDEFS,
1411 message ("Constant %s implemented as parameterized macro",
1412 fname),
1413 g_currentloc);
1414
1415 uentry_showWhereSpecified (e2);
1416 uentry_setType (e2, ctype_unknown);
1417 uentry_makeConstantFunction (e2);
1418 uentry_setDefined (e2, g_currentloc);
1419 uentry_setFunctionDefined (e2, g_currentloc);
1420 context_enterUnknownMacro (e2);
1421 }
1422 else
1423 {
1424 if (!uentry_isSpecified (e2))
1425 {
1426 fileloc oloc = uentry_whereDeclared (e2);
1427
1428 if (fileloc_isLib (oloc))
1429 {
1430 ;
1431 }
1432 else if (fileloc_isUndefined (oloc)
1433 || fileloc_isPreproc (oloc))
1434 {
1435 if (!emptyMacro)
1436 {
1437 voptgenerror
1438 (FLG_MACROCONSTDECL,
1439 message
1440 ("Macro constant %q not declared",
1441 uentry_getName (e2)),
1442 loc);
1443 }
1444 }
1445 else if (!fileloc_withinLines (oloc, loc, 2))
1446 { /* bogus! will give errors if there is too much whitespace */
1447 voptgenerror
1448 (FLG_SYNTAX,
1449 message
1450 ("Macro constant name %s does not match name in "
1451 "previous constant declaration. This constant "
1452 "is declared at %q", fname,
1453 fileloc_unparse (oloc)),
1454 loc);
1455 }
6fcd0b1e 1456 else
1457 {
1458 /* No warning */
1459 }
ac0860d8 1460 }
1461
1462 context_enterConstantMacro (e2);
1463 cstring_free (fname);
1464 fileloc_free (loc);
1465 return res;
1466 }
1467
1468 }
1469 else if (ctype_isFunction (ct))
1470 {
1471 isspecfcn = TRUE;
1472 specparams = ctype_argsFunction (ct);
1473 noparams = uentryList_size (specparams);
1474
1475 uentry_setFunctionDefined (e2, loc);
1476 context_enterMacro (e2);
1477 }
1478 else if (uentry_isVar (e2))
1479 {
1480 if (hasParams)
1481 {
1482 voptgenerror
1483 (FLG_INCONDEFS,
1484 message ("Variable %s implemented as parameterized macro",
1485 fname),
1486 loc);
1487
1488 uentry_showWhereSpecified (e2);
1489 uentry_setType (e2, ctype_unknown);
1490 uentry_makeVarFunction (e2);
1491 uentry_setDefined (e2, g_currentloc);
1492 uentry_setFunctionDefined (e2, g_currentloc);
1493 context_enterUnknownMacro (e2);
1494 }
1495 else
1496 {
1497 uentry ucons = uentry_makeConstant (fname,
1498 ctype_unknown,
1499 loc);
1500 if (uentry_isExpandedMacro (e2))
1501 {
1502 ; /* okay */
1503 }
1504 else
1505 {
1506 if (optgenerror
1507 (FLG_INCONDEFS,
1508 message ("Variable %s implemented by a macro",
1509 fname),
1510 loc))
1511 {
1512 uentry_showWhereSpecified (e2);
1513 }
1514 }
1515
1516 uentry_setDefined (e2, loc);
1517 uentry_setUsed (ucons, loc);
1518
1519 context_enterConstantMacro (ucons);
1520 uentry_markOwned (ucons);
1521 cstring_free (fname);
1522 return res;
1523 }
1524 }
1525 else
1526 {
1527 if (uentry_isDatatype (e2))
1528 {
1529 vgenhinterror
1530 (FLG_SYNTAX,
1531 message ("Type implemented as macro: %x",
1532 uentry_getName (e2)),
1533 message ("A type is implemented using a macro definition. A "
1534 "typedef should be used instead."),
1535 g_currentloc);
1536
6fcd0b1e 1537 cscanner_swallowMacro ();
ac0860d8 1538 /* Must exit scope (not sure why a new scope was entered?) */
1539 usymtab_quietExitScope (g_currentloc);
1540 uentry_setDefined (e2, g_currentloc);
1541 res = FALSE;
1542 }
1543 else
1544 {
1545 llcontbug
1546 (message ("Unexpanded macro not function or constant: %q",
1547 uentry_unparse (e2)));
1548 uentry_setType (e2, ctype_unknown);
1549
1550 if (hasParams)
1551 {
1552 uentry_makeVarFunction (e2);
1553 uentry_setDefined (e2, g_currentloc);
1554 uentry_setFunctionDefined (e2, g_currentloc);
1555 context_enterUnknownMacro (e2);
1556 }
1557 }
1558 }
1559 }
1560 }
1561 }
1562 else
1563 {
1564 uentry ce;
1565
1566 /* evans 2001-09-09 - if it has params, assume a function */
1567 if (hasParams)
1568 {
1569 voptgenerror
1570 (FLG_MACROMATCHNAME,
1571 message ("Unexpanded macro %s does not match name of a declared "
1572 "function. The name used in the control "
1573 "comment on the previous line should match.",
1574 fname),
1575 loc);
1576
1577 ce = uentry_makeFunction (fname, ctype_unknown,
1578 typeId_invalid,
1579 globSet_undefined,
1580 sRefSet_undefined,
1581 warnClause_undefined,
1582 fileloc_undefined);
1583 uentry_setUsed (ce, loc); /* perhaps bogus? */
1584 e2 = usymtab_supEntryReturn (ce);
1585 context_enterUnknownMacro (e2);
1586 }
1587 else
1588 {
1589 voptgenerror
1590 (FLG_MACROMATCHNAME,
1591 message ("Unexpanded macro %s does not match name of a constant "
1592 "or iter declaration. The name used in the control "
1593 "comment on the previous line should match. "
1594 "(Assuming macro defines a constant.)",
1595 fname),
1596 loc);
1597
1598 ce = uentry_makeConstant (fname, ctype_unknown, fileloc_undefined);
1599 uentry_setUsed (ce, loc); /* perhaps bogus? */
1600 e2 = usymtab_supEntryReturn (ce);
1601
1602 context_enterConstantMacro (e2);
1603 cstring_free (fname);
1604 fileloc_free (loc);
1605 return res;
1606 }
1607 }
1608
1609 /* in macros, ( must follow immediatetly after name */
1610
1611 if (hasParams)
1612 {
1613 int paramno = 0;
1614
1615 c = skip_whitespace ();
1616
1617 while (c != ')' && c != '\0')
1618 {
1619 uentry param;
1620 bool suppress = context_inSuppressRegion ();
1621 cstring paramname = cstring_undefined;
1622
1623 /*
1624 ** save the parameter location
1625 */
1626
1627 decColumn ();
1628 context_saveLocation ();
1629 incColumn ();
1630
1631 while (c != ' ' && c != '\t' && c != ',' && c != '\0' && c != ')')
1632 {
1633 paramname = cstring_appendChar (paramname, c);
1634 c = macro_nextChar ();
1635 }
1636
1637 if (c == ' ' || c == '\t') c = skip_whitespace ();
1638
1639 if (c == ',')
1640 {
1641 c = macro_nextChar ();
1642 if (c == ' ' || c == '\t') c = skip_whitespace ();
1643 }
1644
1645 if (c == '\0')
1646 {
1647 llfatalerror (cstring_makeLiteral
1648 ("Bad macro syntax: uentryList"));
1649 }
1650
1651 if ((isspecfcn || isiter) && (paramno < noparams)
1652 && !uentry_isElipsisMarker (uentryList_getN
1653 (specparams, paramno)))
1654 {
1655 fileloc sloc = context_getSaveLocation ();
1656 uentry decl = uentryList_getN (specparams, paramno);
1657 sRef sr;
1658
1659 param = uentry_nameCopy (paramname, decl);
1660
1661 uentry_setParam (param);
1662 sr = sRef_makeParam (paramno, uentry_getType (param), stateInfo_makeLoc (sloc));
1663
1664 if (sRef_getNullState (sr) == NS_ABSNULL)
1665 {
1666 ctype pt = ctype_realType (uentry_getType (param));
1667
1668 if (ctype_isUser (pt))
1669 {
1670 uentry te = usymtab_getTypeEntrySafe (ctype_typeId (pt));
1671
1672 if (uentry_isValid (te))
1673 {
1674 sRef_setStateFromUentry (sr, te);
1675 }
1676 }
1677 else
1678 {
1679 sRef_setNullState (sr, NS_UNKNOWN, sloc);
1680 }
1681 }
1682
1683 uentry_setSref (param, sr);
1684 uentry_setDeclaredForceOnly (param, sloc);
1685
1686 skipparam = isiter && uentry_isOut (uentryList_getN (specparams, paramno));
1687 }
1688 else
1689 {
1690 fileloc sloc = context_getSaveLocation ();
1691
1692 param = uentry_makeVariableSrefParam
1693 (paramname, ctype_unknown, fileloc_copy (sloc),
1694 sRef_makeParam (paramno, ctype_unknown, stateInfo_makeLoc (sloc)));
1695 DPRINTF (("Unknown param: %s", uentry_unparseFull (param)));
1696 cstring_free (paramname);
1697
1698 sRef_setPosNull (uentry_getSref (param), sloc);
1699 uentry_setDeclaredForce (param, sloc);
1700
1701 skipparam = FALSE;
1702 fileloc_free (sloc);
1703 }
1704
1705 if (!skipparam)
1706 {
1707 llassert (!uentry_isElipsisMarker (param));
1708
1709 if (!suppress)
1710 {
1711 sRef_makeUnsafe (uentry_getSref (param));
1712 }
1713
1714 pn = uentryList_add (pn, uentry_copy (param));
1715 usymtab_supEntry (param);
1716 }
1717 else
1718 {
1719 /* don't add param */
1720 uentry_free (param);
1721 }
1722
1723 if (c == ',')
1724 {
1725 (void) macro_nextChar ();
1726 c = skip_whitespace ();
1727 }
1728
1729 paramno++;
1730 }
1731
1732 if (c == ')')
1733 {
1734 if (isspecfcn || isiter)
1735 {
1736 if (paramno != noparams && noparams >= 0)
1737 {
1738 advanceLine ();
1739
1740 voptgenerror
1741 (FLG_INCONDEFS,
1742 message ("Macro %s specified with %d args, defined with %d",
1743 fname, noparams, paramno),
1744 g_currentloc);
1745
1746 uentry_showWhereSpecified (e2);
1747 uentry_resetParams (e2, pn);
1748 }
1749 }
1750 else
1751 {
1752 uentry_resetParams (e2, pn);
1753 }
1754 }
1755 }
1756 else
1757 {
1758 /*
1759 ** the form should be:
1760 **
1761 ** # define newname oldname
1762 ** where oldname refers to a function matching the specification
1763 ** of newname.
1764 */
1765
1766 if (unknownm)
1767 {
1768 sRef_setGlobalScope ();
1769 usymtab_supGlobalEntry (uentry_makeVariableLoc (fname, ctype_unknown));
1770 sRef_clearGlobalScope ();
1771 }
1772 else
1773 {
1774 context_setMacroMissingParams ();
1775 }
1776 }
1777
1778
1779 /* context_setuentryList (pn); */
1780 usymtab_enterScope ();
1781
1782 fileloc_free (loc);
1783 cstring_free (fname);
1784
1785 return res;
1786}
1787
1788static bool handleSpecial (char *yyt)
1789{
6fcd0b1e 1790 char *l; /* !! = mstring_create (MAX_NAME_LENGTH); */
ac0860d8 1791 int lineno = 0;
1792 char c;
1793 char *ol;
1794 cstring olc;
6fcd0b1e 1795 size_t len_yyt;
fc97bef4 1796
1797 len_yyt = strlen (yyt +1) ;
ac0860d8 1798
fc97bef4 1799 l = mstring_copy (yyt + 1);
ac0860d8 1800
1801 while ((c = char_fromInt (lminput ())) != '\n' && c != '\0')
1802 {
fc97bef4 1803 l = mstring_append(l, c);
ac0860d8 1804 }
1805
fc97bef4 1806 /* Need to safe original l for deallocating. */
1807 ol = l;
1808
1809 l += strlen (l);
1810
ac0860d8 1811 olc = cstring_fromChars (ol);
1812
1813 if (cstring_equalPrefixLit (olc, "pragma"))
1814 {
6fcd0b1e 1815 char *pname = mstring_create (size_fromInt (MAX_PRAGMA_LEN));
ac0860d8 1816 char *opname = pname;
1817 char *ptr = ol + 6; /* pragma is six characters, plus space */
1818 int len = 0;
1819
1820
1821 /* skip whitespace */
1822 while (((c = *ptr) != '\0') && isspace (c))
1823 {
1824 ptr++;
1825 }
1826
1827
1828 while (((c = *ptr) != '\0') && !isspace (c))
1829 {
1830 len++;
1831
1832 if (len > MAX_PRAGMA_LEN)
1833 {
1834 break;
1835 }
1836
1837 ptr++;
1838 *pname++ = c;
1839 }
1840
1841 *pname = '\0';
1842
1843 if (len == PRAGMA_LEN_EXPAND
1844 && mstring_equal (opname, PRAGMA_EXPAND))
1845 {
1846 cstring exname = cstring_undefined;
1847 uentry ue;
1848
1849 ptr++;
1850 while (((c = *ptr) != '\0') && !isspace (c))
1851 {
1852 exname = cstring_appendChar (exname, c);
1853 ptr++;
1854 }
1855
1856
1857 ue = usymtab_lookupExposeGlob (exname);
1858
1859 if (uentry_isExpandedMacro (ue))
1860 {
1861 if (fileloc_isPreproc (uentry_whereDefined (ue)))
1862 {
1863 fileloc_setColumn (g_currentloc, 1);
1864 uentry_setDefined (ue, g_currentloc);
1865 }
1866 }
1867
1868 cstring_free (exname);
1869 }
1870 }
1871 else if (cstring_equalPrefixLit (olc, "ident"))
1872 {
1873 /* Some pre-processors will leave these in the code. Ignore rest of line */
1874 }
1875 /*
1876 ** Yuk...Win32 filenames can have spaces in them...we need to read
1877 ** to the matching end quote.
1878 */
1879 else if ((sscanf (ol, "line %d \"", &lineno) == 1)
1880 || (sscanf (ol, " %d \"", &lineno) == 1))
1881 {
1882 char *tmp = ol;
1883 cstring fname;
1884 fileId fid;
1885
1886 /*@access cstring@*/
1887 while (*tmp != '\"' && *tmp != '\0')
1888 {
1889 tmp++;
1890 }
1891
1892 llassert (*tmp == '\"');
1893
1894 tmp++;
1895
1896 fname = tmp;
1897
1898 while (*tmp != '\"' && *tmp != '\0')
1899 {
1900 tmp++;
1901 }
1902
1903 llassert (*tmp == '\"');
1904
1905 *tmp = '\0';
1906
1907# if defined(OS2) || defined(MSDOS) || defined(WIN32)
1908
1909 /*
1910 ** DOS-like path delimiters get delivered in pairs, something like
1911 ** \"..\\\\file.h\", so we have to make it normal again. We do NOT
1912 ** remove the pre dirs yet as we usually specify tmp paths relative
1913 ** to the current directory, so tmp files would not get found in
1914 ** the hash table. If this method fails we try it again later.
1915 */
1916
1917 {
1918 char *stmp = fname;
1919
1920 /*
1921 ** Skip past the drive marker.
1922 */
1923
1924 if (strchr (stmp, ':') != NULL)
1925 {
1926 stmp = strchr (stmp, ':') + 1;
1927 }
1928
1929 while ((stmp = strchr (stmp, CONNECTCHAR)) != NULL )
1930 {
1931 if (*(stmp+1) == CONNECTCHAR)
1932 {
1933 memmove (stmp, stmp+1, strlen (stmp));
1934 }
1935
1936 stmp++;
1937 }
1938
1939 fid = fileTable_lookupBase (context_fileTable (), fname);
1940 if (!(fileId_isValid (fid)))
1941 {
1942 fname = removePreDirs (fname);
1943 fid = fileTable_lookupBase (context_fileTable (), fname);
1944 }
1945 }
1946# else /* !defined(OS2) && !defined(MSDOS) */
1947 fname = removePreDirs (fname);
1948 fid = fileTable_lookupBase (context_fileTable (), fname);
1949# endif /* !defined(OS2) && !defined(MSDOS) */
1950
1951 if (!(fileId_isValid (fid)))
1952 {
1953 if (context_inXHFile ())
1954 {
1955 fid = fileTable_addXHFile (context_fileTable (), fname);
1956 }
1957 else if (isHeaderFile (fname))
1958 {
1959 fid = fileTable_addHeaderFile (context_fileTable (), fname);
1960 }
1961 else
1962 {
1963 fid = fileTable_addFile (context_fileTable (), fname);
1964 }
1965 }
1966
1967 setFileLine (fid, lineno);
1968 /*@noaccess cstring@*/
1969 }
1970 else if ((sscanf (ol, "line %d", &lineno) == 1)
1971 || (sscanf (ol, " %d", &lineno) == 1))
1972 {
1973 setLine (lineno); /* next line is <cr> */
1974 }
1975 else
1976 {
1977 if (mstring_equal (ol, "")) {
1978 DPRINTF (("Empty pp command!"));
1979 /*
1980 ** evs 2000-05-16: This is a horrible kludge, to get around a bug (well, difficulty) in the pre-processor.
1981 ** We handle a plain # in the input file, by echoing it, and ignoring it in the post-pp-file.
1982 */
1983 mstring_free (ol);
1984 return FALSE;
1985 } else {
4c9767b3 1986 voptgenerror
1987 (FLG_UNRECOGDIRECTIVE,
1988 message ("Unrecognized pre-processor directive: #%s",
1989 cstring_fromChars (ol)),
1990 g_currentloc);
ac0860d8 1991 }
1992
1993 sfree (ol);
4c9767b3 1994 return FALSE; /* evans 2001-12-30: was: TRUE; */
ac0860d8 1995 }
1996
1997 sfree (ol);
1998 return FALSE;
1999}
2000
6fcd0b1e 2001static int handleLlSpecial (void)
ac0860d8 2002{
2003 bool hasnl = FALSE;
2004 int ic;
2005 char c;
2006 char *s = mstring_createEmpty ();
2007 char *os;
2008 int tok;
2009 int charsread = 0;
2010 fileloc loc;
2011
2012 loc = fileloc_copy (g_currentloc);
2013 DPRINTF (("Handle special: %s", fileloc_unparse (loc)));
2014
2015 while (((ic = ninput ()) != 0) && isalpha (ic))
2016 {
2017 c = (char) ic;
2018 s = mstring_append (s, c);
2019 charsread++;
2020 }
2021
2022 DPRINTF (("Read: %s / %s", s, fileloc_unparse (g_currentloc)));
2023 os = s;
2024
2025 if (charsread == 0 && ic == (int) AFTER_COMMENT_MARKER[0])
2026 {
2027 ic = ninput ();
2028
6fcd0b1e 2029 llassert (ic == (int) AFTER_COMMENT_MARKER[1]);
ac0860d8 2030
2031 if (*s == '\0')
2032 {
2033 sfree (os);
2034 fileloc_free (loc);
2035 return QNOMODS; /* special token no modifications token */
2036 }
2037 }
2038
2039 DPRINTF (("Coment marker: %s", os));
2040 tok = commentMarkerToken (cstring_fromChars (os));
2041
2042 if (tok != BADTOK)
2043 {
2044 tokLength = charsread;
2045 sfree (os);
2f2892c2 2046 s_inSpecPart = TRUE;
2047 s_whichSpecPart = tok;
ac0860d8 2048 fileloc_free (loc);
2049 return tok;
2050 }
2051
2052 DPRINTF (("Not a comment marker..."));
2053 /* Add rest of the comment */
2054
2055 if (ic != 0 && ic != EOF)
2056 {
2057 c = (char) ic;
2058
2059 s = mstring_append (s, c);
2060 charsread++;
2061
2062 while (((ic = ninput ()) != 0) && (ic != EOF)
6fcd0b1e 2063 && (ic != (int) AFTER_COMMENT_MARKER[0]))
ac0860d8 2064 {
2065 c = (char) ic;
2066
2067 /* evans 2001-09-01 added to prevent assertion failures for uncloses syntactic comments */
2068
2069 if (c == '\n') {
2070 hasnl = TRUE; /* This prevents tokLength from being set later. */
2071 tokLength = 0;
2072
2073 voptgenerror
2074 (FLG_SYNTAX,
2075 message ("Likely parse error: syntactic comment token spans multiple lines: %s",
2076 cstring_fromChars (s)),
abd7f895 2077 loc);
ac0860d8 2078 }
2079
2080 s = mstring_append (s, c);
2081 charsread++;
2082 }
2083 }
2084
2085 DPRINTF (("Read: %s / %s", s, fileloc_unparse (g_currentloc)));
2086
6fcd0b1e 2087 if (ic == (int) AFTER_COMMENT_MARKER[0])
ac0860d8 2088 {
2089 int nc = ninput ();
2090 llassert ((char) nc == AFTER_COMMENT_MARKER[1]);
2091 charsread++;
2092 }
2093
2094 os = s;
2095
2096 while (*s == ' ' || *s == '\t' || *s == '\n')
2097 {
2098 s++;
2099 }
2100
2101 if (*s == '-' || *s == '+' || *s == '=') /* setting flags */
2102 {
2103 c = *s;
2104
2105 while (c == '-' || c == '+' || c == '=')
2106 {
2107 ynm set = ynm_fromCodeChar (c);
2108 cstring thisflag;
2109
2110 s++;
2111
2112 thisflag = cstring_fromChars (s);
2113
2114 while ((c = *s) != '\0' && (c != '-') && (c != '=')
2115 && (c != '+') && (c != ' ') && (c != '\t') && (c != '\n'))
2116 {
2117 s++;
2118 }
2119
2120 *s = '\0';
2121
2122 if (!context_getFlag (FLG_NOCOMMENTS))
2123 {
2124 cstring flagname = thisflag;
27c9e640 2125 flagcode fflag = flags_identifyFlag (flagname);
77d37419 2126
ac0860d8 2127 if (flagcode_isSkip (fflag))
2128 {
2129 ;
2130 }
140c27a8 2131 else if (flagcode_isModeName (fflag))
ac0860d8 2132 {
140c27a8 2133 if (ynm_isMaybe (set))
ac0860d8 2134 {
140c27a8 2135 llerror
2136 (FLG_BADFLAG,
2137 message
2138 ("Semantic comment attempts to restore flag %s. "
2139 "A mode flag cannot be restored.",
2140 flagname));
ac0860d8 2141 }
2142 else
2143 {
140c27a8 2144 context_setMode (flagname);
ac0860d8 2145 }
2146 }
140c27a8 2147 else if (flagcode_isInvalid (fflag))
2148 {
2149 voptgenerror
2150 (FLG_UNRECOGFLAGCOMMENTS,
2151 message ("Unrecognized option in semantic comment: %s",
2152 flagname),
2153 loc);
2154 }
ac0860d8 2155 else if (flagcode_isGlobalFlag (fflag))
2156 {
2157 voptgenerror
2158 (FLG_BADFLAG,
2159 message
2160 ("Semantic comment attempts to set global flag %s. "
2161 "A global flag cannot be set locally.",
2162 flagname),
abd7f895 2163 loc);
ac0860d8 2164 }
2165 else
2166 {
abd7f895 2167 context_fileSetFlag (fflag, set, loc);
ac0860d8 2168
2169 if (flagcode_hasArgument (fflag))
2170 {
2171 if (ynm_isMaybe (set))
2172 {
2173 voptgenerror
2174 (FLG_BADFLAG,
2175 message
2176 ("Semantic comment attempts to restore flag %s. "
2177 "A flag for setting a value cannot be restored.",
2178 flagname),
abd7f895 2179 loc);
ac0860d8 2180 }
2181 else
2182 { /* cut-and-pastied from llmain...blecch */
2183 cstring extra = cstring_undefined;
2184 char *rest;
2185 char *orest;
2186 char rchar;
2187
2188 *s = c;
2189 rest = mstring_copy (s);
2190 orest = rest;
2191 *s = '\0';
2192
2193 while ((rchar = *rest) != '\0'
2194 && (isspace (rchar)))
2195 {
2196 rest++;
2197 s++;
2198 }
2199
2200 while ((rchar = *rest) != '\0'
2201 && !isspace (rchar))
2202 {
2203 extra = cstring_appendChar (extra, rchar);
2204 rest++;
2205 s++;
2206 }
6fcd0b1e 2207 s--; /* evans 2002-07-12: this was previously only in the else branch.
2208 Leads to an invalid read on the true branch.
2209 */
2210
ac0860d8 2211 sfree (orest);
2212
2213 if (cstring_isUndefined (extra))
2214 {
2215 llerror
2216 (FLG_BADFLAG,
2217 message
2218 ("Flag %s (in semantic comment) must be followed by an argument",
2219 flagcode_unparse (fflag)));
6fcd0b1e 2220
ac0860d8 2221 }
2222 else
2223 {
4f43223c 2224 if (flagcode_hasNumber (fflag))
2225 {
2226 setValueFlag (fflag, extra);
2227 }
2228 else if (flagcode_hasChar (fflag))
ac0860d8 2229 {
2230 setValueFlag (fflag, extra);
2231 }
2232 else if (flagcode_hasString (fflag))
2233 {
2234 setStringFlag (fflag, extra);
2235 }
2236 else
2237 {
6fcd0b1e 2238 cstring_free (extra);
ac0860d8 2239 BADEXIT;
2240 }
2241 }
2242 }
2243 }
2244 }
2245 }
2246 else
2247 {
2248 ;
2249 }
2250
2251 *s = c;
2252 while ((c == ' ') || (c == '\t') || (c == '\n'))
2253 {
2254 c = *(++s);
2255 }
2256 }
2257
2258 if (context_inHeader () && !isArtificial (cstring_fromChars (os)))
2259 {
2260 DPRINTF (("Here adding comment: %s", os));
abd7f895 2261 context_addComment (cstring_fromCharsNew (os), loc);
ac0860d8 2262 }
2263 else
2264 {
2265 ;
2266 }
2267 }
2268 else
2269 {
2270 char *t = s;
2271 int macrocode;
2272 char tchar = '\0';
2273 annotationInfo ainfo;
2274
2275 while (*s != '\0' && *s != ' ' && *s != '\t' && *s != '\n')
2276 {
2277 s++;
2278 }
2279
2280 if (*s != '\0')
2281 {
2282 tchar = *s;
2283 *s = '\0';
2284 s++;
2285 }
2286
2287 t = cstring_toCharsSafe (cstring_downcase (cstring_fromChars (t)));
2288 macrocode = tokenMacroCode (cstring_fromChars (t));
2289
2290 if (macrocode != BADTOK)
2291 {
6fcd0b1e 2292 tokLength = hasnl ? 0 : size_toInt (mstring_length (t));
ac0860d8 2293
2294 sfree (t);
2295 sfree (os);
2296 fileloc_free (loc);
2297
2298 if (macrocode == SKIPTOK)
2299 {
2300 return BADTOK;
2301 }
2302
2303 return macrocode;
2304 }
2305
2306 ainfo = context_lookupAnnotation (cstring_fromChars (os));
2307
2308 if (annotationInfo_isDefined (ainfo)) {
2309 DPRINTF (("Found annotation: %s", annotationInfo_unparse (ainfo)));
2310 /*@i324@*/ yylval.annotation = ainfo;
2311 tokLength = 0;
2312 sfree (os);
2313 sfree (t);
2314 fileloc_free (loc);
2315 return CANNOTATION;
2316 }
2317
2318 if (context_inHeader ())
2319 {
2320 if (tchar != '\0')
2321 {
2322 *(s-1) = tchar;
2323 }
2324
2325 if ((context_inMacro () || context_inGlobalContext ())
2326 && macrocode != SKIPTOK
2327 && !isArtificial (cstring_fromChars (os)))
2328 {
abd7f895 2329 if (context_processingMacros ())
2330 {
2331 /* evans 2002-02-24: don't add comments when procssing macros */
2332 }
2333 else
2334 {
2335 context_addComment (cstring_fromCharsNew (os), loc);
2336 }
ac0860d8 2337 }
2338 else
2339 {
2340 ;
2341 }
2342
2343 if (tchar != '\0')
2344 {
2345 *(s-1) = '\0';
2346 }
2347 }
2348
2349 if (mstring_equal (t, "ignore"))
2350 {
2351 if (!context_getFlag (FLG_NOCOMMENTS))
2352 {
abd7f895 2353 context_enterSuppressRegion (loc);
ac0860d8 2354 }
2355 }
2356 else if ((*t == 'i' || *t == 't')
2357 && (*(t + 1) == '\0'))
2358 {
2359 if (!context_getFlag (FLG_NOCOMMENTS)
2360 && (*t == 'i' || context_getFlag (FLG_TMPCOMMENTS)))
2361 {
abd7f895 2362 context_enterSuppressLine (-1, loc); /* infinite suppression */
ac0860d8 2363 }
2364 }
2365 else if (((*t == 'i') || (*t == 't'))
2366 && ((*(t + 1) >= '0' && *(t + 1) <= '9')))
2367 {
2368 bool tmpcomment = (*t == 't');
2369 int val = -1;
2370 char *tt = t; /* don't mangle t, since it is free'd */
2371 char lc = *(++tt);
2372
2373 if (lc >= '0' && lc <= '9')
2374 {
2375 val = (int)(lc - '0');
2376
2377 lc = *(++tt);
2378 while (lc >= '0' && lc <= '9')
2379 {
2380 val *= 10;
6fcd0b1e 2381 val += (int) (lc - '0');
ac0860d8 2382 lc = *(++tt);
2383 }
2384 }
ac0860d8 2385
2386 if (!context_getFlag (FLG_NOCOMMENTS)
2387 && (!tmpcomment || context_getFlag (FLG_TMPCOMMENTS)))
2388 {
abd7f895 2389 DPRINTF (("Here: enter suppress: %s", fileloc_unparse (loc)));
2390 context_enterSuppressLine (val, loc);
ac0860d8 2391 }
2392 }
2393 else if (mstring_equal (t, "end"))
2394 {
2395 if (!context_getFlag (FLG_NOCOMMENTS))
2396 {
abd7f895 2397 context_exitSuppressRegion (loc);
ac0860d8 2398 }
2399 }
2400 else if (mstring_equal (t, "notfunction"))
2401 {
2402 ; /* handled by pcpp */
2403 }
2404 else if (mstring_equal (t, "access"))
2405 {
2406 cstring tname;
2407
2408 while (TRUE)
2409 {
6fcd0b1e 2410 while (((c = *s) != '\0') && (c == ' ' || c == '\t' || c == '\n'))
ac0860d8 2411 {
2412 s++;
2413 }
2414
2415 if (c == '\0')
2416 {
2417 break;
2418 }
2419
2420 tname = cstring_fromChars (s);
2421
2422 while ((c = *s) != '\0' && c != ' '
2423 && c != '\t' && c != '\n' && c != ',')
2424 {
2425 s++;
2426 }
2427
2428 *s = '\0';
2429
2430 DPRINTF (("Access %s", tname));
2431
2432 if (!context_getFlag (FLG_NOCOMMENTS)
2433 && !context_getFlag (FLG_NOACCESS))
2434 {
2435 if (usymtab_existsType (tname))
2436 {
2437 typeId uid = usymtab_getTypeId (tname);
2438 uentry ue = usymtab_getTypeEntry (uid);
2439
2440 if (uentry_isAbstractDatatype (ue))
2441 {
2442 context_addFileAccessType (uid);
2443 DPRINTF (("Adding access to: %s / %d", tname, uid));
2444 }
2445 else
2446 {
2447 voptgenerror
2448 (FLG_COMMENTERROR,
2449 message
2450 ("Non-abstract type %s used in access comment",
2451 tname),
abd7f895 2452 loc);
ac0860d8 2453 }
2454 }
2455 else
2456 {
2457 if (!(context_inSuppressRegion ()
abd7f895 2458 || context_inSuppressZone (loc)))
ac0860d8 2459 {
2460 voptgenerror
2461 (FLG_COMMENTERROR,
2462 message
2463 ("Unrecognized type %s used in access comment",
2464 tname),
abd7f895 2465 loc);
ac0860d8 2466 }
2467 }
2468 }
2469
2470 if (c != '\0')
2471 {
2472 s++;
2473 }
2474
2475 if (c != ',' && c != ' ')
2476 {
2477 break;
2478 }
2479 }
2480 }
2481 else if (mstring_equal (t, "noaccess"))
2482 {
2483 cstring tname;
2484 char lc;
2485
2486 while (TRUE)
2487 {
6fcd0b1e 2488 while (((lc = *s) != '\0') && (lc == ' ' || lc == '\t' || lc == '\n'))
ac0860d8 2489 {
2490 s++;
2491 }
2492
2493 if (lc == '\0')
2494 {
2495 break;
2496 }
2497
2498 tname = cstring_fromChars (s);
2499
2500 while ((lc = *s) != '\0' && lc != ' ' && lc != '\t'
2501 && lc != '\n' && lc != ',')
2502 {
2503 s++;
2504 }
2505
2506 *s = '\0';
2507
2508 if (!context_getFlag (FLG_NOCOMMENTS)
2509 && !context_getFlag (FLG_NOACCESS))
2510 {
2511 if (usymtab_existsType (tname))
2512 {
2513 typeId tuid = usymtab_getTypeId (tname);
2514
2515 if (context_couldHaveAccess (tuid))
2516 {
2517 DPRINTF (("Removing access: %s", tname));
2518 context_removeFileAccessType (tuid);
2519 }
2520 else
2521 {
2522 if (!(context_inSuppressRegion ()
abd7f895 2523 || context_inSuppressZone (loc)))
ac0860d8 2524 {
2525 uentry ue = usymtab_getTypeEntry (tuid);
2526
2527 if (uentry_isAbstractDatatype (ue))
2528 {
2529 voptgenerror
2530 (FLG_COMMENTERROR,
2531 message
2532 ("Non-accessible abstract type %s used in noaccess comment",
2533 tname),
abd7f895 2534 loc);
ac0860d8 2535 }
2536 else
2537 {
2538 voptgenerror
2539 (FLG_COMMENTERROR,
2540 message
2541 ("Non-abstract type %s used in noaccess comment",
2542 tname),
abd7f895 2543 loc);
ac0860d8 2544 }
2545 }
2546 }
2547 }
2548 else
2549 {
2550 if (!(context_inSuppressRegion ()
abd7f895 2551 || context_inSuppressZone (loc)))
ac0860d8 2552 {
2553 voptgenerror
2554 (FLG_COMMENTERROR,
2555 message
2556 ("Unrecognized type %s used in noaccess comment",
2557 tname),
abd7f895 2558 loc);
ac0860d8 2559 }
2560 }
2561 }
2562
2563 if (lc != '\0')
2564 {
2565 s++;
2566 }
2567
2568 if (lc != ',' && lc != ' ')
2569 {
2570 break;
2571 }
2572 }
2573 }
2574 else
2575 {
2576 voptgenerror (FLG_UNRECOGCOMMENTS,
2577 message ("Semantic comment unrecognized: %s",
abd7f895 2578 cstring_fromChars (os)),
2579 loc);
ac0860d8 2580 }
abd7f895 2581
ac0860d8 2582 sfree (t);
2583 }
2584
2585 sfree (os);
2586 fileloc_free (loc);
2587 return BADTOK;
2588}
2589
2590static /*@only@*/ cstring makeIdentifier (char *s)
2591{
6fcd0b1e 2592 char *c = mstring_create (strlen (s) + 1);
ac0860d8 2593 cstring id = cstring_fromChars (c);
2594
2595 while (isalnum (*s) || (*s == '_') || (*s == '$'))
2596 {
2597 *c++ = *s++;
2598 }
2599
2600 *c = '\0';
2601 return (id);
2602}
2603
2604/*@observer@*/ /*@dependent@*/ uentry coerceId (cstring cn)
2605{
2606 if (!(usymtab_exists (cn)))
2607 {
2608 fileloc loc = fileloc_createExternal ();
2609
2610 /*
2611 ** We need to put this in a global scope, otherwise the sRef will be deallocated.
2612 */
2613
2614 uentry ce = uentry_makeUnrecognized (cn, loc);
2615
2616 if (!context_inIterEnd ())
2617 {
2618 voptgenerror
2619 (FLG_SYSTEMUNRECOG,
2620 message ("Unrecognized (possibly system) identifier: %q",
2621 uentry_getName (ce)),
2622 g_currentloc);
2623 }
2624
2625 return ce;
2626 }
2627
2628 return (usymtab_lookup (cn));
2629}
2630
2631/*
2632** like, coerceId, but doesn't supercede for iters
2633*/
2634
2635/*@observer@*/ uentry coerceIterId (cstring cn)
2636{
2637 if (!(usymtab_exists (cn)))
2638 {
2639 return uentry_undefined;
2640 }
2641
2642 return (usymtab_lookup (cn));
2643}
2644
6fcd0b1e 2645/*
2646** Need to keep this in case there is a declaration that isn't processed until
2647** the scope exits. Would be good to rearrange the symbol table so this doesn't
2648** happen, and save all the cstring copying.
2649*/
2650
2651/*@observer@*/ cstring cscanner_observeLastIdentifier ()
ac0860d8 2652{
6fcd0b1e 2653 cstring res = s_lastidprocessed;
2654 return res;
2655}
2656
2657static void cscanner_setLastIdentifier (/*@keep@*/ cstring id) /*@modifies s_lastidprocessed@*/
2658{
2659 if (cstring_isDefined (s_lastidprocessed))
2660 {
2661 cstring_free (s_lastidprocessed);
2662 }
2663
2664 s_lastidprocessed = id;
ac0860d8 2665}
2666
2667static int processIdentifier (cstring id)
2668{
2669 uentry le;
2670
2671 if (context_getFlag (FLG_GRAMMAR))
2672 {
2673 lldiagmsg (message ("Process identifier: %s", id));
2674 }
2675
2676 context_clearJustPopped ();
6fcd0b1e 2677 cscanner_setLastIdentifier (id);
ac0860d8 2678
2f2892c2 2679 DPRINTF (("Context: %s", context_unparse ()));
2680
ac0860d8 2681 if (context_inFunctionHeader ())
2682 {
2683 int tok = commentMarkerToken (id);
2f2892c2 2684 DPRINTF (("in function decl: %s", id));
ac0860d8 2685
2686 if (tok != BADTOK)
2687 {
2688 return tok;
2689 }
2690 else
2691 {
2692 tok = tokenMacroCode (id);
2f2892c2 2693
ac0860d8 2694 if (tok != BADTOK)
2695 {
2696 return tok;
2697 }
2698 else
2699 {
2700 annotationInfo ainfo;
2701
2702 if (expectingMetaStateName)
2703 {
2704 metaStateInfo msinfo = context_lookupMetaStateInfo (id);
2705
2706 if (metaStateInfo_isDefined (msinfo))
2707 {
2708 yylval.msinfo = msinfo;
2709 return METASTATE_NAME;
2710 }
2711 else
2712 {
2713 DPRINTF (("Not meta state name: %s", cstring_toCharsSafe (id)));
2714 }
2715 }
2716
2717 ainfo = context_lookupAnnotation (id);
2718
2719 if (annotationInfo_isDefined (ainfo))
2720 {
2721 DPRINTF (("Found annotation: %s", annotationInfo_unparse (ainfo)));
2722 /*@i324@*/ yylval.annotation = ainfo;
2723 return CANNOTATION;
2724 }
2725 else
2726 {
2727 DPRINTF (("Not annotation: %s", id));
2728 }
2729 }
2730 }
2731 }
2732
2f2892c2 2733 DPRINTF (("Here!"));
2734
ac0860d8 2735 /* Consider handling: Defined by C99 as static const char __func__[] */
2736
2737 if (context_getFlag (FLG_GNUEXTENSIONS))
2738 {
2739 int tok = BADTOK;
2740
2741 if (cstring_equalLit (id, "__stdcall")
2742 || cstring_equalLit (id, "__cdecl")
2743 || cstring_equalLit (id, "__extension__"))
2744 {
2745 return BADTOK;
2746 }
2747 else if (cstring_equalLit (id, "__volatile__"))
2748 {
2749 tok = QVOLATILE;
2750 }
2751 else if (cstring_equalLit (id, "__signed"))
2752 {
2753 tok = QSIGNED;
2754 }
2755 else if (cstring_equalLit (id, "__unsigned"))
2756 {
2757 tok = QUNSIGNED;
2758 }
2759 else if (cstring_equalLit (id, "__const__"))
2760 {
2761 tok = QCONST;
2762 }
2763 else if (cstring_equalLit (id, "__alignof__"))
2764 {
2765 tok = CALIGNOF; /* alignof is parsed like sizeof */
2766 }
abd7f895 2767 else if (cstring_equalLit (id, "__typeof__"))
2768 {
2769 tok = CTYPEOF;
2770 }
2771 else if (cstring_equalLit (id, "typeof"))
2772 {
2773 tok = CTYPEOF;
2774 }
ac0860d8 2775 else if (cstring_equalLit (id, "__FUNCTION__")
2776 || cstring_equalLit (id, "__PRETTY_FUNCTION__"))
2777 {
2778 /* These tokens hold the name of the current function as strings */
5c2f3045 2779 /* evans 2001-12-30: changed from exprNode_stringLiteral; bug reported by Jim Zelenka. */
2780 yylval.expr = exprNode_makeConstantString (id, fileloc_copy (g_currentloc));
ac0860d8 2781 tokLength = 0;
2782 lastWasString = TRUE;
2783 tok = CCONSTANT;
2784 return tok;
2785 }
2786 else if (cstring_equalLit (id, "__attribute__")
2787 || cstring_equalLit (id, "__asm__")
2788 || cstring_equalLit (id, "_asm")
2789 || cstring_equalLit (id, "__asm")
2790 || cstring_equalLit (id, "__declspec"))
2791 {
2792 int depth = 0;
2793 bool useparens = FALSE;
2794 bool usebraces = FALSE;
2795 bool inquote = FALSE;
2796 bool inescape = FALSE;
2797 int ic;
2798
2799 while ((ic = input ()) != EOF)
2800 {
6fcd0b1e 2801 char cc = (char) ic;
2802
ac0860d8 2803 if (inescape)
2804 {
2805 inescape = FALSE;
2806 }
6fcd0b1e 2807 else if (cc == '\\')
ac0860d8 2808 {
2809 inescape = TRUE;
2810 }
6fcd0b1e 2811 else if (cc == '\"')
ac0860d8 2812 {
2813 inquote = !inquote;
2814 }
2815 else if (!inquote)
2816 {
6fcd0b1e 2817 if (cc == '(')
ac0860d8 2818 {
2819 if (!useparens)
2820 {
2821 if (!usebraces)
2822 {
2823 useparens = TRUE;
2824 }
2825 }
2826
2827 if (useparens)
2828 {
2829 depth++;
2830 }
2831 }
6fcd0b1e 2832 else if (cc == '{')
ac0860d8 2833 {
2834 if (!usebraces)
2835 {
2836 if (!useparens)
2837 {
2838 usebraces = TRUE;
2839 }
2840 }
2841
2842 if (usebraces)
2843 {
2844 depth++;
2845 }
2846 }
6fcd0b1e 2847 else if (cc == ')' && useparens)
ac0860d8 2848 {
2849 depth--;
2850 if (depth == 0) break;
2851 }
6fcd0b1e 2852 else if (cc == '}' && usebraces)
ac0860d8 2853 {
2854 depth--;
2855 if (depth == 0) break;
2856 }
6fcd0b1e 2857 else if (cc == '}'
ac0860d8 2858 && !usebraces && !useparens
2859 && cstring_equalLit (id, "__asm"))
2860 {
2861 /*
2862 ** We need this because some MS VC++ include files
2863 ** have __asm mov ... }
2864 ** Its a kludge, but otherwise would need to parse
2865 ** the asm code!
2866 */
2867 return TRBRACE;
2868 }
6fcd0b1e 2869 else
2870 {
2871 ;
2872 }
2873 }
2874 else
2875 {
2876 ;
ac0860d8 2877 }
2878
6fcd0b1e 2879 if (cc == '\n')
ac0860d8 2880 {
2881 context_incLineno ();
2882
2883 if (cstring_equalLit (id, "__asm")
2884 && !useparens && !usebraces)
2885 {
2886 break;
2887 }
2888 }
2889 }
2890
6fcd0b1e 2891 llassert ((useparens && ic == (int) ')')
2892 || (usebraces && ic == (int) '}')
ac0860d8 2893 || (!useparens && !usebraces));
2894
2895 return BADTOK;
2896 }
2897 else if (cstring_equalLit (id, "inline")
2898 || cstring_equalLit (id, "__inline")
2899 || cstring_equalLit (id, "_inline")
2900 || cstring_equalLit (id, "__inline__"))
2901 {
2902 tok = QINLINE;
2903 }
6fcd0b1e 2904 else
2905 {
2906 ;
2907 }
ac0860d8 2908
2909 if (tok != BADTOK)
2910 {
2911 RETURN_TOK (tok);
2912 }
2913 }
2914
2915 le = usymtab_lookupSafe (id);
2916
2917 /*@-dependenttrans@*/
2918
2919 if (uentry_isIter (le))
2920 {
2921 /*@i32@*/ yylval.entry = le;
2922 return (ITER_NAME);
2923 }
2924 else if (uentry_isEndIter (le))
2925 {
2926 /*@i32@*/ yylval.entry = le;
2927 return (ITER_ENDNAME);
2928 }
2929 else if (uentry_isUndefined (le))
2930 {
6fcd0b1e 2931 yylval.cname = cstring_copy (id);
ac0860d8 2932
2933 /* avoid parse errors for certain system built ins */
2934
2935 if (g_expectingTypeName && (cstring_firstChar (id) == '_')
2936 && (cstring_secondChar (id) == '_'))
2937 {
2938 return (TYPE_NAME_OR_ID);
2939 }
2940
2941 return (NEW_IDENTIFIER);
2942 }
2943 else if (!uentry_isDeclared (le) && !uentry_isCodeDefined (le))
2944 {
2945 if (uentry_isDatatype (le))
2946 {
6fcd0b1e 2947 yylval.cname = cstring_copy (id);
ac0860d8 2948 return (NEW_IDENTIFIER);
2949 }
2950 else
2951 {
2952 /*@i32@*/ yylval.entry = le;
2953 return (IDENTIFIER);
2954 }
2955 }
2956 else if (uentry_isDatatype (le))
2957 {
2958 if (!g_expectingTypeName)
2959 {
6fcd0b1e 2960 yylval.cname = cstring_copy (id);
ac0860d8 2961
2962 return (NEW_IDENTIFIER);
2963 }
2964 else
2965 {
2966 yylval.ctyp = uentry_getAbstractType (le);
2967
2968 uentry_setUsed (le, g_currentloc);
2969 return (TYPE_NAME);
2970 }
2971 }
2972 else
2973 {
2974 /*@i32@*/ yylval.entry = le;
2975 return (IDENTIFIER);
2976 }
2977
2978 /*@=dependenttrans@*/
2979}
2980
2981static bool processHashIdentifier (/*@only@*/ cstring id)
2982{
2983 if (context_inMacro () || context_inIterDef () ||
2984 context_inIterEnd ())
2985 {
2986 uentry le;
2987
2988 context_clearJustPopped ();
2989
ac0860d8 2990 le = usymtab_lookupSafe (id);
6fcd0b1e 2991 cscanner_setLastIdentifier (id);
ac0860d8 2992
2993 if (uentry_isParam (le) || uentry_isRefParam (le))
2994 {
2995 return TRUE;
2996 }
2997 else
2998 {
2999 return FALSE;
3000 }
3001 }
3002 else
3003 {
4c9767b3 3004 /*
3005 ** Will be handled by handleLlSpecial
3006 */
3007
ac0860d8 3008 cstring_free (id);
3009 return FALSE;
3010 }
3011}
3012
3013
6fcd0b1e 3014static /*@only@*/ exprNode processString (void)
ac0860d8 3015{
3016 exprNode res;
3017 fileloc loc;
3018 char *nl = strchr (yytext, '\n');
3019 cstring ns = cstring_fromCharsNew (yytext);
3020
3021 if (nl == NULL)
3022 {
3023 loc = fileloc_copy (g_currentloc);
6fcd0b1e 3024 addColumn (size_toInt (cstring_length (ns)));
ac0860d8 3025 }
3026 else
3027 {
3028 char *lastnl = nl;
3029
3030 loc = fileloc_copy (g_currentloc);
3031
3032 context_incLineno ();
3033
3034 while ((nl = strchr ((nl + 1), '\n')) != NULL)
3035 {
3036 context_incLineno ();
3037 lastnl = nl;
3038 }
3039 }
3040
3041
3042 res = exprNode_stringLiteral (ns, loc);
3043 return (res);
3044}
3045
e0b363ad 3046/*
3047** process a wide character string L"...."
3048*/
3049
3050static /*@only@*/ exprNode processWideString ()
3051{
3052 exprNode res;
3053 fileloc loc;
3054 char *nl = strchr (yytext, '\n');
3055 cstring ns;
3056
3057 llassert (*yytext == 'L');
3058 yytext++;
3059
3060 ns = cstring_fromCharsNew (yytext);
3061
3062 if (nl == NULL)
3063 {
3064 loc = fileloc_copy (g_currentloc);
6fcd0b1e 3065 addColumn (size_toInt (cstring_length (ns)));
e0b363ad 3066 }
3067 else
3068 {
3069 char *lastnl = nl;
3070
3071 loc = fileloc_copy (g_currentloc);
3072
3073 context_incLineno ();
3074
3075 while ((nl = strchr ((nl + 1), '\n')) != NULL)
3076 {
3077 context_incLineno ();
3078 lastnl = nl;
3079 }
3080 }
3081
3082 res = exprNode_wideStringLiteral (ns, loc);
3083 return (res);
3084}
3085
ac0860d8 3086static
3087char processChar ()
3088{
3089 char fchar;
3090 char next;
3091
3092 llassert (*yytext != '\0');
3093 fchar = *(yytext + 1);
3094 if (fchar != '\\') return fchar;
3095
3096 next = *(yytext + 2);
3097
3098 switch (next)
3099 {
3100 case 'n': return '\n';
3101 case 't': return '\t';
3102 case '\"': return '\"';
3103 case '\'': return '\'';
3104 case '\\': return '\\';
3105 default: return '\0';
3106 }
3107}
3108
3109static
3110double processFloat ()
3111{
3112 double ret = atof (yytext);
3113
3114 return (ret);
3115}
3116
3117static
3118long processHex ()
3119{
3120 int index = 2;
3121 long val = 0;
3122
3123 llassert (yytext[0] == '0'
3124 && (yytext[1] == 'X' || yytext[1] == 'x'));
3125
3126 while (yytext[index] != '\0') {
3127 int tval;
3128 char c = yytext[index];
3129
3130 if (c >= '0' && c <= '9') {
3131 tval = (int) c - (int) '0';
3132 } else if (c >= 'A' && c <= 'F') {
3133 tval = (int) c - (int) 'A' + 10;
3134 } else if (c >= 'a' && c <= 'f') {
3135 tval = (int) c - (int) 'a' + 10;
3136 } else if (c == 'U' || c == 'L' || c == 'u' || c == 'l') {
3137 index++;
3138 while (yytext[index] != '\0') {
3139 if (c == 'U' || c == 'L' || c == 'u' || c == 'l') {
3140 ;
3141 } else {
3142 voptgenerror
3143 (FLG_SYNTAX,
3144 message ("Invalid character (%c) following specifier in hex constant: %s",
3145 c, cstring_fromChars (yytext)),
3146 g_currentloc);
3147 }
3148 index++;
3149 }
3150
3151 break;
3152 } else {
3153 voptgenerror
3154 (FLG_SYNTAX,
3155 message ("Invalid character (%c) in hex constant: %s",
3156 c, cstring_fromChars (yytext)),
3157 g_currentloc);
3158 break;
3159 }
3160
3161 val = (val * 16) + tval;
3162 index++;
3163 }
3164
3165 DPRINTF (("Hex constant: %s = %ld", yytext, val));
3166 return val;
3167}
3168
3169static
3170long processOctal ()
3171{
3172 int index = 1;
3173 long val = 0;
3174
3175 llassert (yytext[0] == '0' && yytext[1] != 'X' && yytext[1] != 'x');
3176
3177 while (yytext[index] != '\0') {
3178 int tval;
3179 char c = yytext[index];
3180
3181 if (c >= '0' && c <= '7') {
3182 tval = (int) c - (int) '0';
ee229125 3183 } else if (c == 'U' || c == 'L' || c == 'u' || c == 'l') {
3184 index++;
3185 while (yytext[index] != '\0') {
3186 if (c == 'U' || c == 'L' || c == 'u' || c == 'l') {
3187 ;
3188 } else {
3189 voptgenerror
3190 (FLG_SYNTAX,
3191 message ("Invalid character (%c) following specifier in octal constant: %s",
3192 c, cstring_fromChars (yytext)),
3193 g_currentloc);
3194 }
3195 index++;
3196 }
3197
3198 break;
ac0860d8 3199 } else {
3200 voptgenerror
3201 (FLG_SYNTAX,
3202 message ("Invalid character (%c) in octal constant: %s",
3203 c, cstring_fromChars (yytext)),
3204 g_currentloc);
3205 break;
3206 }
3207
3208 val = (val * 8) + tval;
3209 index++;
3210 }
3211
3212 DPRINTF (("Octal constant: %s = %ld", yytext, val));
3213 return val;
3214}
3215
3216static
3217long processDec ()
3218{
3219 return (atol (yytext));
3220}
3221
3222static int
3223processSpec (int tok)
3224{
3225 size_t length = strlen (yytext);
3226
2f2892c2 3227 if (s_inSpecPart)
ac0860d8 3228 {
a8a71ab5 3229
3d5af576 3230 /*drl 12/11/2002
3231 patched to fix assert failures in constraint code.
3232 Added the else if test so that splint does not treat MaxSet and MaxRead
3233 as identifies*/
3234
2f2892c2 3235 if (s_whichSpecPart == QMODIFIES
3236 || s_whichSpecPart == QDEFINES
3237 || s_whichSpecPart == QUSES
3238 || s_whichSpecPart == QALLOCATES
3239 || s_whichSpecPart == QSETS
3d5af576 3240 || s_whichSpecPart == QRELEASES)
3241
2f2892c2 3242 {
3d5af576 3243 DPRINTF((message("Treating specifaction keyword %s as an identifiers. (This corresponds to"
3244 " token %d and we're in the specification denoted by %d see cgrammar_tokens.h"
3245 " for an explanation of these numbers",
3246 yytext, tok, s_whichSpecPart)
3247 ));
3248
2f2892c2 3249 ; /* Allow specificiation keywords to be used as identifiers in these contexts. */
3250 }
3d5af576 3251 else if ( (s_whichSpecPart == QPRECLAUSE
3252 || s_whichSpecPart == QPOSTCLAUSE
3253 || s_whichSpecPart == QINVARIANT )
3254 && (!isConstraintToken(tok) )
3255 )
3256 {
3257 DPRINTF((message("Treating specifaction keyword %s as an identifiers. (This corresponds to"
3258 " token %d and we're in the specification denoted by %d see cgrammar_tokens.h"
3259 " for an explanation of these numbers",
3260 yytext, tok, s_whichSpecPart)
3261 ));
3262
3263 /* Allow specificiation keywords to be used as identifiers in these contexts. */
3264 }
a8a71ab5 3265 else
2f2892c2 3266 {
3267 setTokLengthT (length);
3268 RETURN_TOK (tok);
3269 }
ac0860d8 3270 }
2f2892c2 3271
3272 context_saveLocation ();
3273 setTokLengthT (length);
3274 return (processIdentifier (makeIdentifier (yytext)));
ac0860d8 3275}
3276
3277void cscanner_expectingMetaStateName ()
3278{
3279 llassert (!expectingMetaStateName);
3280 llassert (context_inFunctionHeader ());
3281 expectingMetaStateName = TRUE;
3282}
3283
3284void cscanner_clearExpectingMetaStateName ()
3285{
3286 llassert (expectingMetaStateName);
3287 expectingMetaStateName = FALSE;
3288}
3d5af576 3289
3290/*drl added 12/11/2002
3291 Tell whether a token has special meaning
3292 within a function constraint
3293*/
3294
3295/*uncomment the additional if statement tests
3296 when minSet and minRead are supported
3297*/
3298int isConstraintToken(int tok)
3299{
3300 if ( tok == QMAXSET
3301 || tok == QMAXREAD
3302
3303 /* || tok == QMINREAD
3304 || tok == QMINSET */
3305
3306 )
3307 {
3308 return TRUE;
3309 }
3310 else
3311 {
3312 return FALSE;
3313 }
3314}
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