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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
616915dd | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
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. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** scanline.c | |
26 | ** | |
27 | ** MODULE DESCRIPTION: | |
28 | ** | |
29 | ** This module scans one line of Larch C Interface Language (LCL) input at | |
30 | ** a time. | |
31 | ** | |
32 | ** The input is source text, line at a time. The output is a sequence | |
33 | ** of tokens, reported by call-out LSLScanFreshToken. | |
34 | ** | |
35 | ** This organization allows implementation of line-at-a-time incremental | |
36 | ** scanning. The incremental mechanism is in the driving module scan.c. | |
37 | ** | |
38 | ** The main loop of the scanner keys on the leading character. | |
39 | ** Within the loop are actions which collect the rest of the | |
40 | ** token starting with the character. Various careful hacks | |
41 | ** show up to disambiguate tokens that break the general pattern | |
42 | ** (Examples, \/ and /\). White space is passed and the loop | |
43 | ** goes once again without calling LSLScanFreshToken (). | |
44 | ** The line ends with a null. | |
45 | ** | |
46 | ** AUTHORS: | |
47 | ** | |
48 | ** JPW, GAF, Yang Meng Tan | |
49 | */ | |
50 | ||
51 | ||
1b8ae690 | 52 | # include "splintMacros.nf" |
616915dd | 53 | # include "llbasic.h" |
54 | # include "gram.h" | |
55 | # include "lclscan.h" | |
56 | # include "scanline.h" | |
57 | # include "lclscanline.h" | |
58 | # include "lcltokentable.h" | |
59 | # include "lclsyntable.h" | |
60 | ||
61 | /*@constant int CHARSIZE;@*/ | |
62 | # define CHARSIZE 256 /* on an 8-bit machine */ | |
63 | ||
64 | /*@notfunction@*/ | |
65 | # define LCLMOVECHAR() \ | |
66 | do { *bufPtr++ = currentChar; currentChar = *currentLine++; \ | |
67 | colNumber++; } while (FALSE) | |
68 | ||
69 | /*@notfunction@*/ | |
70 | # define LOOKAHEADCHAR() (*currentLine) | |
71 | ||
72 | /*@notfunction@*/ | |
73 | # define LOOKAHEADTWICECHAR() (*(currentLine + 1)) | |
74 | ||
75 | /*@constant static int MAXCHAR;@*/ | |
76 | # define MAXCHAR 512 /* storage for a lexeme */ | |
77 | ||
78 | /* | |
79 | ** Printname for the TokenCode NOTTOKEN (also 1st one reserved) | |
80 | ** Printname for the TokenCode BADTOKEN (also last one reserved) | |
81 | */ | |
82 | ||
83 | /*@constant static observer char *FIRSTRESERVEDNAME;@*/ | |
84 | # define FIRSTRESERVEDNAME "?" | |
85 | ||
86 | /* | |
87 | ** The scanner establishes lexical boundaries by first switching | |
88 | ** on the leading character of the pending lexeme. | |
89 | */ | |
90 | ||
91 | typedef enum | |
92 | { | |
93 | STARTCNUM, /* First character of a C number. */ | |
94 | STARTCNUMDOT, /* "." only starts a C number if digit follows*/ | |
95 | STARTCSTR, /* First character of a C string. */ | |
96 | STARTCCHAR, /* First character of a C character. */ | |
97 | STARTWIDE, /* slash L starts both string and character. */ | |
98 | STARTSLASH, /* "/" starts caret, comment comment, operator */ | |
99 | STARTOTHER /* Everything else. */ | |
100 | } StartCharType; | |
101 | ||
102 | static void ScanCComment (void); | |
103 | static void ScanEscape (void); | |
104 | static void ScanCString (void); | |
105 | static void ScanCChar (void); | |
106 | static void ScanCNumber (void); | |
107 | static void LocalUserError (/*@temp@*/ char *); | |
108 | ||
109 | /* | |
110 | ** Array to store character class defintions and record end-of-comment | |
111 | ** characters. | |
112 | */ | |
113 | ||
114 | static charClassData LCLcharClass[LASTCHAR + 1]; | |
115 | ||
116 | /* | |
117 | ** Data shared between routines LCLScanLine, ScanCString, ScanCChar, | |
118 | ** ScanCNumber. LCLScanLine was getting too big for one routine and | |
119 | ** passing this data was rather cumbersome. Making this data global seemed | |
120 | ** to be the simpliest solution. | |
121 | */ | |
122 | ||
123 | /* evs - sounds bogus to me! */ | |
124 | ||
28bf4b0b | 125 | static int colNumber; |
126 | static int startCol; | |
616915dd | 127 | static char *currentLine; |
128 | static char currentChar; | |
129 | static ltokenCode tokenCode; | |
130 | static lsymbol tokenSym; | |
131 | static char *bufPtr; | |
132 | ||
133 | static bool inComment; | |
134 | static /*@only@*/ ltoken commentTok; | |
135 | static ltokenCode prevTokenCode; /* to disambiguate ' */ | |
136 | ||
137 | static StartCharType startClass[CHARSIZE] = | |
138 | { | |
139 | STARTOTHER, /* ^@ 00x */ | |
140 | STARTOTHER, /* ^a 01x */ | |
141 | STARTOTHER, /* ^b 02x */ | |
142 | STARTOTHER, /* ^c 03x */ | |
143 | STARTOTHER, /* ^d 04x */ | |
144 | STARTOTHER, /* ^e 05x */ | |
145 | STARTOTHER, /* ^f 06x */ | |
146 | STARTOTHER, /* ^g BELL 07x */ | |
147 | ||
148 | STARTOTHER, /* ^h BACKSPACE 08x */ | |
149 | STARTOTHER, /* ^i TAB 09x */ | |
150 | STARTOTHER, /* ^j NEWLINE 0Ax */ | |
151 | STARTOTHER, /* ^k 0Bx */ | |
152 | STARTOTHER, /* ^l FORMFEED 0Cx */ | |
153 | STARTOTHER, /* ^m RETURN 0Dx */ | |
154 | STARTOTHER, /* ^n 0Ex */ | |
155 | STARTOTHER, /* ^o 0Fx */ | |
156 | ||
157 | STARTOTHER, /* ^p 10x */ | |
158 | STARTOTHER, /* ^q 11x */ | |
159 | STARTOTHER, /* ^r 12x */ | |
160 | STARTOTHER, /* ^s 13x */ | |
161 | STARTOTHER, /* ^t 14x */ | |
162 | STARTOTHER, /* ^u 15x */ | |
163 | STARTOTHER, /* ^v 16x */ | |
164 | STARTOTHER, /* ^w 17x */ | |
165 | ||
166 | STARTOTHER, /* ^x 18x */ | |
167 | STARTOTHER, /* ^y 19x */ | |
168 | STARTOTHER, /* ^z 1Ax */ | |
169 | STARTOTHER, /* ^[ ESC 1Bx */ | |
170 | STARTOTHER, /* ^slash 1Cx */ | |
171 | STARTOTHER, /* ^] 1Dx */ | |
172 | STARTOTHER, /* ^^ 1Ex */ | |
173 | STARTOTHER, /* ^_ 1Fx */ | |
174 | ||
175 | STARTOTHER, /* BLANK 20x */ | |
176 | STARTOTHER, /* ! 21x */ | |
177 | STARTCSTR, /* " 22x */ | |
178 | STARTOTHER, /* # 23x */ | |
179 | STARTOTHER, /* $ (may be changed in reset) 24x */ | |
180 | STARTOTHER, /* % 25x */ | |
181 | STARTOTHER, /* & 26x */ | |
182 | STARTCCHAR, /* ' 27x */ | |
183 | ||
184 | STARTOTHER, /* ( 28x */ | |
185 | STARTOTHER, /* ) 29x */ | |
186 | STARTOTHER, /* * 2Ax */ | |
187 | STARTOTHER, /* + 2Bx */ | |
188 | STARTOTHER, /* , 2Cx */ | |
189 | STARTOTHER, /* - 2Dx */ | |
190 | STARTCNUMDOT, /* . 2Ex */ | |
191 | STARTSLASH, /* / 2Fx */ | |
192 | ||
193 | STARTCNUM, /* 0 30x */ | |
194 | STARTCNUM, /* 1 31x */ | |
195 | STARTCNUM, /* 2 32x */ | |
196 | STARTCNUM, /* 3 33x */ | |
197 | STARTCNUM, /* 4 34x */ | |
198 | STARTCNUM, /* 5 35x */ | |
199 | STARTCNUM, /* 6 36x */ | |
200 | STARTCNUM, /* 7 37x */ | |
201 | ||
202 | STARTCNUM, /* 8 38x */ | |
203 | STARTCNUM, /* 9 39x */ | |
204 | STARTOTHER, /* : 3Ax */ | |
205 | STARTOTHER, /* ; 3Bx */ | |
206 | STARTOTHER, /* < 3Cx */ | |
207 | STARTOTHER, /* = 3Dx */ | |
208 | STARTOTHER, /* > 3Ex */ | |
209 | STARTOTHER, /* ? 3Fx */ | |
210 | ||
211 | STARTOTHER, /* @ 40x */ | |
212 | STARTOTHER, /* A 41x */ | |
213 | STARTOTHER, /* B 42x */ | |
214 | STARTOTHER, /* C 43x */ | |
215 | STARTOTHER, /* D 44x */ | |
216 | STARTOTHER, /* E 45x */ | |
217 | STARTOTHER, /* F 46x */ | |
218 | STARTOTHER, /* G 47x */ | |
219 | ||
220 | STARTOTHER, /* H 48x */ | |
221 | STARTOTHER, /* I 49x */ | |
222 | STARTOTHER, /* J 4Ax */ | |
223 | STARTOTHER, /* K 4Bx */ | |
224 | STARTOTHER, /* L 4Cx */ | |
225 | STARTOTHER, /* M 4Dx */ | |
226 | STARTOTHER, /* N 4Ex */ | |
227 | STARTOTHER, /* O 4Fx */ | |
228 | ||
229 | STARTOTHER, /* P 50x */ | |
230 | STARTOTHER, /* Q 51x */ | |
231 | STARTOTHER, /* R 52x */ | |
232 | STARTOTHER, /* S 53x */ | |
233 | STARTOTHER, /* T 54x */ | |
234 | STARTOTHER, /* U 55x */ | |
235 | STARTOTHER, /* V 56x */ | |
236 | STARTOTHER, /* W 57x */ | |
237 | ||
238 | STARTOTHER, /* X 58x */ | |
239 | STARTOTHER, /* Y 59x */ | |
240 | STARTOTHER, /* Z 5Ax */ | |
241 | STARTOTHER, /* [ 5Bx */ | |
242 | STARTWIDE, /* slash 5Cx */ | |
243 | STARTOTHER, /* ] 5Dx */ | |
244 | STARTOTHER, /* ^ 5Ex */ | |
245 | STARTOTHER, /* _ 5Fx */ | |
246 | ||
247 | STARTOTHER, /* ` 60x */ | |
248 | STARTOTHER, /* a 61x */ | |
249 | STARTOTHER, /* b 62x */ | |
250 | STARTOTHER, /* c 63x */ | |
251 | STARTOTHER, /* d 64x */ | |
252 | STARTOTHER, /* e 65x */ | |
253 | STARTOTHER, /* f 66x */ | |
254 | STARTOTHER, /* g 67x */ | |
255 | ||
256 | STARTOTHER, /* h 68x */ | |
257 | STARTOTHER, /* i 69x */ | |
258 | STARTOTHER, /* j 6Ax */ | |
259 | STARTOTHER, /* k 6Bx */ | |
260 | STARTOTHER, /* l 6Cx */ | |
261 | STARTOTHER, /* m 6Dx */ | |
262 | STARTOTHER, /* n 6Ex */ | |
263 | STARTOTHER, /* o 6Fx */ | |
264 | ||
265 | STARTOTHER, /* p 70x */ | |
266 | STARTOTHER, /* q 71x */ | |
267 | STARTOTHER, /* r 72x */ | |
268 | STARTOTHER, /* s 73x */ | |
269 | STARTOTHER, /* t 74x */ | |
270 | STARTOTHER, /* u 75x */ | |
271 | STARTOTHER, /* v 76x */ | |
272 | STARTOTHER, /* w 77x */ | |
273 | ||
274 | STARTOTHER, /* x 78x */ | |
275 | STARTOTHER, /* y 79x */ | |
276 | STARTOTHER, /* z 7Ax */ | |
277 | STARTOTHER, /* { 7Dx */ | |
278 | STARTOTHER, /* | 7Cx */ | |
279 | STARTOTHER, /* } 7Dx */ | |
280 | STARTOTHER, /* ~ 7Ex */ | |
281 | STARTOTHER, | |
282 | STARTOTHER /* RUBOUT 7Fx */ | |
283 | }; | |
284 | ||
285 | /* | |
286 | ** Given a character code, its status as part of an decimal escape sequence | |
287 | ** can be derived from this table. Digits 0-9 allowed. | |
288 | */ | |
289 | ||
290 | static bool isDigit[CHARSIZE] = | |
291 | { | |
292 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
293 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
294 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
295 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
296 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
297 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
298 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
299 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
300 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE | |
301 | }; | |
302 | ||
303 | /* | |
304 | * Given a character code, its status as part of an octal escape sequence | |
305 | * can be derived from this table. Digits 0-7 allowed. | |
306 | */ | |
307 | ||
308 | static bool isOigit[CHARSIZE] = | |
309 | { | |
310 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
311 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
312 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
313 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
314 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
315 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
316 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
317 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE | |
318 | }; | |
319 | ||
320 | /* | |
321 | * Given a character code, its status as part of a hex escape sequence | |
322 | * can be derived from this table. Digits, a-f, A-F allowed. | |
323 | */ | |
324 | ||
325 | static bool isXigit[CHARSIZE] = | |
326 | { | |
327 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
328 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
329 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
330 | ||
331 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
332 | FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
333 | TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
334 | ||
335 | FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
336 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
337 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
338 | ||
339 | FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
340 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
341 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE | |
342 | }; | |
343 | ||
344 | ||
345 | /* | |
346 | * Given a character code, its status as part of a C string | |
347 | * can be derived from this table. Everything but quotes and newline | |
348 | * are allowed. | |
349 | */ | |
350 | ||
351 | static bool isStrChar[CHARSIZE] = | |
352 | { | |
353 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
354 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
355 | TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
356 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
357 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
358 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, | |
359 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
360 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE | |
361 | }; | |
362 | ||
363 | /* | |
364 | * Given a character code, its status as part of a C Character | |
365 | * can be derived from this table. Everything but quotes and newline | |
366 | * are allowed. | |
367 | */ | |
368 | ||
369 | static bool isCharChar[CHARSIZE] = | |
370 | { | |
371 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
372 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
373 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
374 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
375 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
376 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, | |
377 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, | |
378 | TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE | |
379 | }; | |
380 | ||
381 | /* | |
382 | ** Given a character code, its status as part of a string or character | |
383 | ** simple escape sequence ('slash'', 'slash"', 'slash?', 'slashslash', | |
384 | ** 'slasha', 'slashb', 'slashf', 'slashn', 'slasht', and 'slashv') | |
385 | ** can be derived from this table. ''', '"', '?', 'slash', 'a', | |
386 | ** 'b', 'f', 'n', 't', and 'v' are allowed. | |
387 | */ | |
388 | ||
389 | static bool isSimpleEscape[CHARSIZE] = | |
390 | { | |
391 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
392 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
393 | FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
394 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, | |
395 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, | |
396 | FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, | |
397 | FALSE, TRUE, TRUE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, | |
398 | FALSE, FALSE, TRUE, FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE | |
399 | }; | |
400 | ||
401 | static bool reportEOL; | |
402 | static bool reportComments; | |
403 | static lsymbol firstReserved; | |
404 | ||
405 | static char tokenBuffer[MAXCHAR]; | |
406 | ||
407 | static const charClassData charClassDef[] = | |
408 | { | |
409 | /* Control characters */ | |
410 | ||
411 | { SINGLECHAR, FALSE }, /* 0 NULL */ | |
412 | { SINGLECHAR, FALSE }, /* 1 CTRL-A */ | |
413 | { SINGLECHAR, FALSE }, /* 2 CTRL-B */ | |
414 | { SINGLECHAR, FALSE }, /* 3 CTRL-C */ | |
415 | { SINGLECHAR, FALSE }, /* 4 CTRL-D */ | |
416 | { SINGLECHAR, FALSE }, /* 5 CTRL-E */ | |
417 | { SINGLECHAR, FALSE }, /* 6 CTRL-F */ | |
418 | { SINGLECHAR, FALSE }, /* 7 CTRL-G */ | |
419 | { SINGLECHAR, FALSE }, /* 8 CTRL-H */ | |
420 | ||
421 | /* defined formatting characters */ | |
422 | { WHITECHAR, FALSE }, /* 9 CTRL-I TAB */ | |
423 | { CHC_NULL, TRUE }, /* 10 CTRL-J EOL */ | |
424 | ||
425 | /* more control characters */ | |
426 | { SINGLECHAR, FALSE }, /* 11 CTRL-K */ | |
427 | { WHITECHAR, FALSE }, /* 12 CTRL-L */ | |
428 | { SINGLECHAR, FALSE }, /* 13 CTRL-M */ | |
429 | { SINGLECHAR, FALSE }, /* 14 CTRL-N */ | |
430 | { SINGLECHAR, FALSE }, /* 15 CTRL-O */ | |
431 | { SINGLECHAR, FALSE }, /* 16 CTRL-P */ | |
432 | { SINGLECHAR, FALSE }, /* 17 CTRL-Q */ | |
433 | { SINGLECHAR, FALSE }, /* 18 CTRL-R */ | |
434 | { SINGLECHAR, FALSE }, /* 19 CTRL-S */ | |
435 | { SINGLECHAR, FALSE }, /* 20 CTRL-T */ | |
436 | { SINGLECHAR, FALSE }, /* 21 CTRL-U */ | |
437 | { SINGLECHAR, FALSE }, /* 22 CTRL-V */ | |
438 | { SINGLECHAR, FALSE }, /* 23 CTRL-W */ | |
439 | { SINGLECHAR, FALSE }, /* 24 CTRL-X */ | |
440 | { SINGLECHAR, FALSE }, /* 25 CTRL-Y */ | |
441 | { SINGLECHAR, FALSE }, /* 26 CTRL-Z */ | |
442 | { SINGLECHAR, FALSE }, /* 27 CTRL-[ ESC */ | |
443 | { SINGLECHAR, FALSE }, /* 28 CTRL-slash FS */ | |
444 | { SINGLECHAR, FALSE }, /* 29 CTRL-] GS */ | |
445 | { SINGLECHAR, FALSE }, /* 30 CTRL-^ RS */ | |
446 | { SINGLECHAR, FALSE }, /* 31 CTRL-_ US */ | |
447 | ||
448 | /* Special printing characters */ | |
449 | { WHITECHAR, FALSE }, /* 32 space */ | |
450 | { SINGLECHAR, FALSE }, /* 33 ! */ | |
451 | { SINGLECHAR, FALSE }, /* 34 " */ | |
452 | { SINGLECHAR, FALSE }, /* 35 # */ | |
453 | { SINGLECHAR, FALSE }, /* 36 $ */ | |
454 | { SINGLECHAR, FALSE }, /* 37 % */ | |
455 | { SINGLECHAR, FALSE }, /* 38 & */ | |
456 | { SINGLECHAR, FALSE }, /* 39 ' */ | |
457 | ||
458 | /* Reserved characters */ | |
459 | { PERMCHAR, FALSE }, /* 40 ( */ | |
460 | { PERMCHAR, FALSE }, /* 41 ) */ | |
461 | { PERMCHAR, FALSE }, /* 42 * */ | |
462 | { OPCHAR, FALSE }, /* 43 + */ | |
463 | { PERMCHAR, FALSE }, /* 44 , */ | |
464 | { OPCHAR, FALSE }, /* 45 - */ | |
465 | { OPCHAR, FALSE }, /* 46 . */ | |
466 | { OPCHAR, FALSE }, /* 47 / */ | |
467 | ||
468 | /* Numbers */ | |
469 | { IDCHAR, FALSE }, /* 48 0 */ | |
470 | { IDCHAR, FALSE }, /* 49 1 */ | |
471 | { IDCHAR, FALSE }, /* 50 2 */ | |
472 | { IDCHAR, FALSE }, /* 51 3 */ | |
473 | { IDCHAR, FALSE }, /* 52 4 */ | |
474 | { IDCHAR, FALSE }, /* 53 5 */ | |
475 | { IDCHAR, FALSE }, /* 54 6 */ | |
476 | { IDCHAR, FALSE }, /* 55 7 */ | |
477 | { IDCHAR, FALSE }, /* 56 8 */ | |
478 | { IDCHAR, FALSE }, /* 57 9 */ | |
479 | ||
480 | /* More reserved and special printing characters */ | |
481 | { PERMCHAR, FALSE }, /* 58 : */ | |
482 | { PERMCHAR, FALSE }, /* 59; */ | |
483 | { OPCHAR, FALSE }, /* 60 < */ | |
484 | { OPCHAR, FALSE }, /* 61 = */ | |
485 | { OPCHAR, FALSE }, /* 62 > */ | |
486 | { SINGLECHAR, FALSE }, /* 63 ? */ | |
487 | { SINGLECHAR, FALSE }, /* 64 @ */ | |
488 | ||
489 | /* Uppercase Alphabetics */ | |
490 | { IDCHAR, FALSE }, /* 65 A */ | |
491 | { IDCHAR, FALSE }, /* 66 B */ | |
492 | { IDCHAR, FALSE }, /* 67 C */ | |
493 | { IDCHAR, FALSE }, /* 68 D */ | |
494 | { IDCHAR, FALSE }, /* 69 E */ | |
495 | { IDCHAR, FALSE }, /* 70 F */ | |
496 | { IDCHAR, FALSE }, /* 71 G */ | |
497 | { IDCHAR, FALSE }, /* 72 H */ | |
498 | { IDCHAR, FALSE }, /* 73 I */ | |
499 | { IDCHAR, FALSE }, /* 74 J */ | |
500 | { IDCHAR, FALSE }, /* 75 K */ | |
501 | { IDCHAR, FALSE }, /* 76 L */ | |
502 | { IDCHAR, FALSE }, /* 77 M */ | |
503 | { IDCHAR, FALSE }, /* 78 N */ | |
504 | { IDCHAR, FALSE }, /* 79 O */ | |
505 | { IDCHAR, FALSE }, /* 80 P */ | |
506 | { IDCHAR, FALSE }, /* 81 Q */ | |
507 | { IDCHAR, FALSE }, /* 82 R */ | |
508 | { IDCHAR, FALSE }, /* 83 S */ | |
509 | { IDCHAR, FALSE }, /* 84 T */ | |
510 | { IDCHAR, FALSE }, /* 85 U */ | |
511 | { IDCHAR, FALSE }, /* 86 V */ | |
512 | { IDCHAR, FALSE }, /* 87 W */ | |
513 | { IDCHAR, FALSE }, /* 88 X */ | |
514 | { IDCHAR, FALSE }, /* 89 Y */ | |
515 | { IDCHAR, FALSE }, /* 90 Z */ | |
516 | ||
517 | /* Still more reserved and special printing characters */ | |
518 | { PERMCHAR, FALSE }, /* 91 [ */ | |
519 | { CHC_EXTENSION, FALSE }, /* 92 slash */ | |
520 | { PERMCHAR, FALSE }, /* 93 ] */ | |
521 | { SINGLECHAR, FALSE }, /* 94 ^ */ | |
522 | { IDCHAR, FALSE }, /* 95 _ */ | |
523 | { SINGLECHAR, FALSE }, /* 96 ` */ | |
524 | ||
525 | /* Lowercase alphabetics */ | |
526 | { IDCHAR, FALSE }, /* 97 a */ | |
527 | { IDCHAR, FALSE }, /* 98 b */ | |
528 | { IDCHAR, FALSE }, /* 99 c */ | |
529 | { IDCHAR, FALSE }, /* 100 d */ | |
530 | { IDCHAR, FALSE }, /* 101 e */ | |
531 | { IDCHAR, FALSE }, /* 102 f */ | |
532 | { IDCHAR, FALSE }, /* 103 g */ | |
533 | { IDCHAR, FALSE }, /* 104 h */ | |
534 | { IDCHAR, FALSE }, /* 105 i */ | |
535 | { IDCHAR, FALSE }, /* 106 j */ | |
536 | { IDCHAR, FALSE }, /* 107 k */ | |
537 | { IDCHAR, FALSE }, /* 108 l */ | |
538 | { IDCHAR, FALSE }, /* 109 m */ | |
539 | { IDCHAR, FALSE }, /* 110 n */ | |
540 | { IDCHAR, FALSE }, /* 111 o */ | |
541 | { IDCHAR, FALSE }, /* 112 p */ | |
542 | { IDCHAR, FALSE }, /* 113 q */ | |
543 | { IDCHAR, FALSE }, /* 114 r */ | |
544 | { IDCHAR, FALSE }, /* 115 s */ | |
545 | { IDCHAR, FALSE }, /* 116 t */ | |
546 | { IDCHAR, FALSE }, /* 117 u */ | |
547 | { IDCHAR, FALSE }, /* 118 v */ | |
548 | { IDCHAR, FALSE }, /* 119 w */ | |
549 | { IDCHAR, FALSE }, /* 120 x */ | |
550 | { IDCHAR, FALSE }, /* 121 y */ | |
551 | { IDCHAR, FALSE }, /* 122 z */ | |
552 | ||
553 | { SINGLECHAR, FALSE }, /* 123 { */ | |
554 | { SINGLECHAR, FALSE }, /* 124 | */ | |
555 | { SINGLECHAR, FALSE }, /* 125 } */ | |
556 | { SINGLECHAR, FALSE }, /* 126 ~ */ | |
557 | { SINGLECHAR, FALSE }, /* 127 DEL */ | |
558 | ||
559 | /* MCS - unused in English */ | |
560 | { SINGLECHAR, FALSE }, /* 128 */ | |
561 | { SINGLECHAR, FALSE }, /* 129 */ | |
562 | { SINGLECHAR, FALSE }, /* 130 */ | |
563 | { SINGLECHAR, FALSE }, /* 131 */ | |
564 | { SINGLECHAR, FALSE }, /* 132 */ | |
565 | { SINGLECHAR, FALSE }, /* 133 */ | |
566 | { SINGLECHAR, FALSE }, /* 134 */ | |
567 | { SINGLECHAR, FALSE }, /* 135 */ | |
568 | { SINGLECHAR, FALSE }, /* 136 */ | |
569 | { SINGLECHAR, FALSE }, /* 137 */ | |
570 | { SINGLECHAR, FALSE }, /* 138 */ | |
571 | { SINGLECHAR, FALSE }, /* 139 */ | |
572 | { SINGLECHAR, FALSE }, /* 140 */ | |
573 | { SINGLECHAR, FALSE }, /* 141 */ | |
574 | { SINGLECHAR, FALSE }, /* 142 */ | |
575 | { SINGLECHAR, FALSE }, /* 143 */ | |
576 | { SINGLECHAR, FALSE }, /* 144 */ | |
577 | { SINGLECHAR, FALSE }, /* 145 */ | |
578 | { SINGLECHAR, FALSE }, /* 146 */ | |
579 | { SINGLECHAR, FALSE }, /* 147 */ | |
580 | { SINGLECHAR, FALSE }, /* 148 */ | |
581 | { SINGLECHAR, FALSE }, /* 149 */ | |
582 | { SINGLECHAR, FALSE }, /* 150 */ | |
583 | { SINGLECHAR, FALSE }, /* 151 */ | |
584 | { SINGLECHAR, FALSE }, /* 152 */ | |
585 | { SINGLECHAR, FALSE }, /* 153 */ | |
586 | { SINGLECHAR, FALSE }, /* 154 */ | |
587 | { SINGLECHAR, FALSE }, /* 155 */ | |
588 | { SINGLECHAR, FALSE }, /* 156 */ | |
589 | { SINGLECHAR, FALSE }, /* 157 */ | |
590 | { SINGLECHAR, FALSE }, /* 158 */ | |
591 | { SINGLECHAR, FALSE }, /* 159 */ | |
592 | { SINGLECHAR, FALSE }, /* 160 */ | |
593 | { SINGLECHAR, FALSE }, /* 161 */ | |
594 | { SINGLECHAR, FALSE }, /* 162 */ | |
595 | { SINGLECHAR, FALSE }, /* 163 */ | |
596 | { SINGLECHAR, FALSE }, /* 164 */ | |
597 | { SINGLECHAR, FALSE }, /* 165 */ | |
598 | { SINGLECHAR, FALSE }, /* 166 */ | |
599 | { SINGLECHAR, FALSE }, /* 167 */ | |
600 | { SINGLECHAR, FALSE }, /* 168 */ | |
601 | { SINGLECHAR, FALSE }, /* 169 */ | |
602 | { SINGLECHAR, FALSE }, /* 170 */ | |
603 | { SINGLECHAR, FALSE }, /* 171 */ | |
604 | { SINGLECHAR, FALSE }, /* 172 */ | |
605 | { SINGLECHAR, FALSE }, /* 173 */ | |
606 | { SINGLECHAR, FALSE }, /* 174 */ | |
607 | { SINGLECHAR, FALSE }, /* 175 */ | |
608 | { SINGLECHAR, FALSE }, /* 176 */ | |
609 | { SINGLECHAR, FALSE }, /* 177 */ | |
610 | { SINGLECHAR, FALSE }, /* 178 */ | |
611 | { SINGLECHAR, FALSE }, /* 179 */ | |
612 | { SINGLECHAR, FALSE }, /* 180 */ | |
613 | { SINGLECHAR, FALSE }, /* 181 */ | |
614 | { SINGLECHAR, FALSE }, /* 182 */ | |
615 | { SINGLECHAR, FALSE }, /* 183 */ | |
616 | { SINGLECHAR, FALSE }, /* 184 */ | |
617 | { SINGLECHAR, FALSE }, /* 185 */ | |
618 | { SINGLECHAR, FALSE }, /* 186 */ | |
619 | { SINGLECHAR, FALSE }, /* 187 */ | |
620 | { SINGLECHAR, FALSE }, /* 188 */ | |
621 | { SINGLECHAR, FALSE }, /* 189 */ | |
622 | { SINGLECHAR, FALSE }, /* 190 */ | |
623 | { SINGLECHAR, FALSE }, /* 191 */ | |
624 | { SINGLECHAR, FALSE }, /* 192 */ | |
625 | { SINGLECHAR, FALSE }, /* 193 */ | |
626 | { SINGLECHAR, FALSE }, /* 194 */ | |
627 | { SINGLECHAR, FALSE }, /* 195 */ | |
628 | { SINGLECHAR, FALSE }, /* 196 */ | |
629 | { SINGLECHAR, FALSE }, /* 197 */ | |
630 | { SINGLECHAR, FALSE }, /* 198 */ | |
631 | { SINGLECHAR, FALSE }, /* 199 */ | |
632 | { SINGLECHAR, FALSE }, /* 200 */ | |
633 | { SINGLECHAR, FALSE }, /* 201 */ | |
634 | { SINGLECHAR, FALSE }, /* 202 */ | |
635 | { SINGLECHAR, FALSE }, /* 203 */ | |
636 | { SINGLECHAR, FALSE }, /* 204 */ | |
637 | { SINGLECHAR, FALSE }, /* 205 */ | |
638 | { SINGLECHAR, FALSE }, /* 206 */ | |
639 | { SINGLECHAR, FALSE }, /* 207 */ | |
640 | { SINGLECHAR, FALSE }, /* 208 */ | |
641 | { SINGLECHAR, FALSE }, /* 209 */ | |
642 | { SINGLECHAR, FALSE }, /* 210 */ | |
643 | { SINGLECHAR, FALSE }, /* 211 */ | |
644 | { SINGLECHAR, FALSE }, /* 212 */ | |
645 | { SINGLECHAR, FALSE }, /* 213 */ | |
646 | { SINGLECHAR, FALSE }, /* 214 */ | |
647 | { SINGLECHAR, FALSE }, /* 215 */ | |
648 | { SINGLECHAR, FALSE }, /* 216 */ | |
649 | { SINGLECHAR, FALSE }, /* 217 */ | |
650 | { SINGLECHAR, FALSE }, /* 218 */ | |
651 | { SINGLECHAR, FALSE }, /* 219 */ | |
652 | { SINGLECHAR, FALSE }, /* 220 */ | |
653 | { SINGLECHAR, FALSE }, /* 221 */ | |
654 | { SINGLECHAR, FALSE }, /* 222 */ | |
655 | { SINGLECHAR, FALSE }, /* 223 */ | |
656 | { SINGLECHAR, FALSE }, /* 224 */ | |
657 | { SINGLECHAR, FALSE }, /* 225 */ | |
658 | { SINGLECHAR, FALSE }, /* 226 */ | |
659 | { SINGLECHAR, FALSE }, /* 227 */ | |
660 | { SINGLECHAR, FALSE }, /* 228 */ | |
661 | { SINGLECHAR, FALSE }, /* 229 */ | |
662 | { SINGLECHAR, FALSE }, /* 230 */ | |
663 | { SINGLECHAR, FALSE }, /* 231 */ | |
664 | { SINGLECHAR, FALSE }, /* 232 */ | |
665 | { SINGLECHAR, FALSE }, /* 233 */ | |
666 | { SINGLECHAR, FALSE }, /* 234 */ | |
667 | { SINGLECHAR, FALSE }, /* 235 */ | |
668 | { SINGLECHAR, FALSE }, /* 236 */ | |
669 | { SINGLECHAR, FALSE }, /* 237 */ | |
670 | { SINGLECHAR, FALSE }, /* 238 */ | |
671 | { SINGLECHAR, FALSE }, /* 239 */ | |
672 | { SINGLECHAR, FALSE }, /* 240 */ | |
673 | { SINGLECHAR, FALSE }, /* 241 */ | |
674 | { SINGLECHAR, FALSE }, /* 242 */ | |
675 | { SINGLECHAR, FALSE }, /* 243 */ | |
676 | { SINGLECHAR, FALSE }, /* 244 */ | |
677 | { SINGLECHAR, FALSE }, /* 245 */ | |
678 | { SINGLECHAR, FALSE }, /* 246 */ | |
679 | { SINGLECHAR, FALSE }, /* 247 */ | |
680 | { SINGLECHAR, FALSE }, /* 248 */ | |
681 | { SINGLECHAR, FALSE }, /* 249 */ | |
682 | { SINGLECHAR, FALSE }, /* 250 */ | |
683 | { SINGLECHAR, FALSE }, /* 251 */ | |
684 | { SINGLECHAR, FALSE }, /* 252 */ | |
685 | { SINGLECHAR, FALSE }, /* 253 */ | |
686 | { SINGLECHAR, FALSE }, /* 254 */ | |
687 | { SINGLECHAR, FALSE } /* 255 */ | |
688 | }; | |
689 | ||
690 | void | |
691 | ScanCComment (void) | |
692 | { | |
693 | inComment = TRUE; | |
694 | for (;;) | |
695 | { | |
696 | switch (currentChar) | |
697 | { | |
698 | case '*': | |
699 | LCLMOVECHAR (); | |
700 | if (currentChar == '/') | |
701 | { | |
702 | LCLMOVECHAR (); | |
703 | inComment = FALSE; | |
704 | return; | |
705 | } | |
706 | /*@switchbreak@*/ break; | |
707 | case '\n': | |
708 | return; | |
709 | default: | |
710 | LCLMOVECHAR (); | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
715 | void | |
716 | ScanEscape (void) | |
717 | { | |
718 | if (isSimpleEscape[(int)currentChar]) | |
719 | { | |
720 | LCLMOVECHAR (); /* discard simple escape character. */ | |
721 | } | |
722 | else if (currentChar == 'x') | |
723 | { | |
724 | LCLMOVECHAR (); /* discard 'x'. */ | |
725 | if (!isXigit[(int)currentChar]) | |
726 | { | |
727 | LocalUserError ("at least one hex digit must follow '\\x'"); | |
728 | } | |
729 | while (isXigit[(int)currentChar]) | |
730 | { | |
731 | LCLMOVECHAR (); /* discard hex digits. */ | |
732 | } | |
733 | } | |
734 | else if (isOigit[(int)currentChar]) | |
735 | { | |
736 | LCLMOVECHAR (); /* discard first hex digit. */ | |
737 | if (isOigit[(int)currentChar]) | |
738 | { | |
739 | LCLMOVECHAR (); /* discard second hex digit. */ | |
740 | } | |
741 | if (isOigit[(int)currentChar]) | |
742 | { | |
743 | LCLMOVECHAR (); /* discard third hex digit. */ | |
744 | } | |
745 | } | |
746 | else | |
747 | { | |
748 | LocalUserError ("invalid escape sequence in a C string or character"); | |
749 | } | |
750 | } | |
751 | ||
752 | void | |
753 | ScanCString (void) | |
754 | { | |
755 | if (currentChar == '\\' && LOOKAHEADCHAR () == 'L') | |
756 | { | |
757 | LCLMOVECHAR (); /* discard slash */ | |
758 | LCLMOVECHAR (); /* discard 'L'. */ | |
759 | } | |
760 | ||
761 | if (currentChar == '\"') | |
762 | { | |
763 | LCLMOVECHAR (); /* discard opening quote. */ | |
764 | ||
765 | while (currentChar != '\"') | |
766 | { | |
767 | if (isStrChar[(int)currentChar]) | |
768 | { | |
769 | LCLMOVECHAR (); /* discard string character. */ | |
770 | } | |
771 | else if (currentChar == '\\') | |
772 | { | |
773 | LCLMOVECHAR (); /* discard slash */ | |
774 | ScanEscape (); | |
775 | } | |
776 | else if (currentChar == '\n') | |
777 | { | |
6fcd0b1e | 778 | LocalUserError ("Unterminated C string"); |
616915dd | 779 | } |
780 | else | |
781 | { | |
6fcd0b1e | 782 | LocalUserError ("Invalid character in C string"); |
616915dd | 783 | } |
784 | } | |
785 | LCLMOVECHAR (); /* discard closing quote */ | |
786 | ||
787 | } | |
788 | else | |
789 | { | |
790 | LocalUserError ("C string must start with '\"'"); | |
791 | } | |
792 | ||
793 | ||
794 | *bufPtr = '\0'; /* null terminate in buffer */ | |
795 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
796 | tokenCode = LLT_LCSTRING; | |
797 | } | |
798 | ||
799 | void | |
800 | ScanCChar (void) | |
801 | { | |
802 | if (currentChar == '\\' && LOOKAHEADCHAR () == 'L') | |
803 | { | |
804 | LCLMOVECHAR (); /* discard slash */ | |
805 | LCLMOVECHAR (); /* discard 'L'. */ | |
806 | } | |
807 | ||
808 | if (currentChar == '\'') | |
809 | { | |
810 | LCLMOVECHAR (); /* discard opening quote */ | |
811 | ||
812 | while (currentChar != '\'') | |
813 | { | |
814 | if (isCharChar[(int)currentChar]) | |
815 | { | |
816 | LCLMOVECHAR (); /* discard string character. */ | |
817 | } | |
818 | else if (currentChar == '\\') | |
819 | { | |
820 | LCLMOVECHAR (); /* discard slash */ | |
821 | ScanEscape (); | |
822 | } | |
823 | else if (currentChar == '\n') | |
824 | { | |
6fcd0b1e | 825 | LocalUserError ("Unterminated C character constant"); |
616915dd | 826 | } |
827 | else | |
828 | { | |
6fcd0b1e | 829 | LocalUserError ("Invalid character in C character"); |
616915dd | 830 | } |
831 | } | |
832 | LCLMOVECHAR (); /* discard closing quote */ | |
833 | ||
834 | } | |
835 | else | |
836 | { | |
6fcd0b1e | 837 | LocalUserError ("Invalid C character"); |
616915dd | 838 | } |
839 | ||
840 | ||
841 | *bufPtr = '\0'; /* null terminate in buffer */ | |
842 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
843 | tokenCode = LLT_CCHAR; | |
844 | } | |
845 | ||
846 | void | |
847 | ScanCNumber (void) | |
848 | { | |
849 | tokenCode = LLT_CINTEGER; | |
850 | ||
851 | switch (currentChar) | |
852 | { | |
853 | case '.': | |
854 | LCLMOVECHAR (); | |
855 | tokenCode = LLT_CFLOAT; | |
856 | if (!isDigit[(int)currentChar]) | |
857 | { | |
858 | LocalUserError ("at least one digit must follow '.'"); | |
859 | } | |
860 | while (isDigit[(int)currentChar]) | |
861 | { | |
862 | LCLMOVECHAR (); | |
863 | } | |
864 | if (currentChar == 'e' || currentChar == 'E') | |
865 | { | |
866 | LCLMOVECHAR (); /* discard 'e' or 'E'. */ | |
867 | if (currentChar == '+' || currentChar == '-') | |
868 | { | |
869 | LCLMOVECHAR (); | |
870 | } | |
871 | if (!isDigit[(int)currentChar]) | |
872 | { | |
873 | LocalUserError ("digit must follow exponent"); | |
874 | } | |
875 | while (isDigit[(int)currentChar]) | |
876 | { | |
877 | LCLMOVECHAR (); | |
878 | } | |
879 | } | |
880 | if (currentChar == 'f' || currentChar == 'l' || | |
881 | currentChar == 'F' || currentChar == 'L') | |
882 | { | |
883 | LCLMOVECHAR (); | |
884 | } | |
885 | break; | |
886 | ||
887 | case '0': | |
888 | LCLMOVECHAR (); /* discard '0'. */ | |
889 | switch (currentChar) | |
890 | { | |
891 | case 'x': | |
892 | case 'X': | |
893 | LCLMOVECHAR (); | |
894 | if (!isXigit[(int)currentChar]) | |
895 | { | |
896 | LocalUserError ("hex digit must follow 'x' or 'X'"); | |
897 | } | |
898 | while (isXigit[(int)currentChar]) | |
899 | { | |
900 | LCLMOVECHAR (); | |
901 | } | |
902 | /*@switchbreak@*/ break; | |
903 | ||
904 | default: | |
905 | /* | |
906 | ** Could either be an octal number or a floating point | |
907 | ** number. Scan decimal digits so don't run into | |
908 | ** problems if turns out problems if it is an fp | |
909 | ** number. Let converter/parser catch bad octal | |
910 | ** numbers. e.g. 018 not caught by scanner. | |
911 | */ | |
912 | ||
913 | while (isDigit[(int)currentChar]) | |
914 | { | |
915 | LCLMOVECHAR (); | |
916 | } | |
917 | switch (currentChar) | |
918 | { | |
919 | case '.': | |
920 | LCLMOVECHAR (); /* discard '.'. */ | |
921 | tokenCode = LLT_CFLOAT; | |
922 | while (isDigit[(int)currentChar]) | |
923 | { | |
924 | LCLMOVECHAR (); | |
925 | } | |
926 | if (currentChar == 'e' || currentChar == 'E') | |
927 | { | |
928 | LCLMOVECHAR (); /* discard 'e' or 'E'. */ | |
929 | if (currentChar == '+' || currentChar == '-') | |
930 | { | |
931 | LCLMOVECHAR (); | |
932 | } | |
933 | if (!isDigit[(int)currentChar]) | |
934 | { | |
935 | LocalUserError ("digit must follow exponent"); | |
936 | } | |
937 | while (isDigit[(int)currentChar]) | |
938 | { | |
939 | LCLMOVECHAR (); | |
940 | } | |
941 | } | |
942 | if (currentChar == 'f' || | |
943 | currentChar == 'l' || | |
944 | currentChar == 'F' || | |
945 | currentChar == 'L') | |
946 | { | |
947 | LCLMOVECHAR (); | |
948 | } | |
949 | /*@switchbreak@*/ break; | |
950 | ||
951 | case 'e': | |
952 | case 'E': | |
953 | LCLMOVECHAR (); | |
954 | tokenCode = LLT_CFLOAT; | |
955 | if (currentChar == '+' || currentChar == '-') | |
956 | { | |
957 | LCLMOVECHAR (); | |
958 | } | |
959 | if (!isDigit[(int)currentChar]) | |
960 | { | |
961 | LocalUserError ("digit must follow exponent"); | |
962 | } | |
963 | while (isDigit[(int)currentChar]) | |
964 | { | |
965 | LCLMOVECHAR (); | |
966 | } | |
967 | if (currentChar == 'f' || | |
968 | currentChar == 'l' || | |
969 | currentChar == 'F' || | |
970 | currentChar == 'L') | |
971 | { | |
972 | LCLMOVECHAR (); | |
973 | } | |
974 | /*@switchbreak@*/ break; | |
975 | ||
976 | default: | |
977 | /* Scan integer suffix. */ | |
978 | switch (currentChar) | |
979 | { | |
980 | case 'u': | |
981 | case 'U': | |
982 | LCLMOVECHAR (); | |
983 | if (currentChar == 'l' || currentChar == 'L') | |
984 | { | |
985 | LCLMOVECHAR (); | |
986 | } | |
987 | /*@switchbreak@*/ break; | |
988 | case 'l': | |
989 | case 'L': | |
990 | LCLMOVECHAR (); | |
991 | if (currentChar == 'u' || currentChar == 'U') | |
992 | { | |
993 | LCLMOVECHAR (); | |
994 | } | |
995 | ||
996 | /*@switchbreak@*/ break; | |
997 | } | |
998 | /*@switchbreak@*/ break; | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* Scan integer suffix. */ | |
1003 | switch (currentChar) | |
1004 | { | |
1005 | case 'u': | |
1006 | case 'U': | |
1007 | LCLMOVECHAR (); | |
1008 | if (currentChar == 'l' || currentChar == 'L') | |
1009 | { | |
1010 | LCLMOVECHAR (); | |
1011 | } | |
1012 | /*@switchbreak@*/ break; | |
1013 | case 'l': | |
1014 | case 'L': | |
1015 | LCLMOVECHAR (); | |
1016 | if (currentChar == 'u' || currentChar == 'U') | |
1017 | { | |
1018 | LCLMOVECHAR (); | |
1019 | } | |
1020 | /*@switchbreak@*/ break; | |
1021 | } | |
1022 | break; | |
1023 | ||
1024 | default: | |
1025 | if (isDigit[(int)currentChar]) | |
1026 | { | |
1027 | while (isDigit[(int)currentChar]) | |
1028 | { | |
1029 | LCLMOVECHAR (); | |
1030 | } | |
1031 | switch (currentChar) | |
1032 | { | |
1033 | case '.': | |
1034 | LCLMOVECHAR (); /* discard '.'. */ | |
1035 | tokenCode = LLT_CFLOAT; | |
1036 | while (isDigit[(int)currentChar]) | |
1037 | { | |
1038 | LCLMOVECHAR (); | |
1039 | } | |
1040 | if (currentChar == 'e' || currentChar == 'E') | |
1041 | { | |
1042 | LCLMOVECHAR (); | |
1043 | if (currentChar == '+' || currentChar == '-') | |
1044 | { | |
1045 | LCLMOVECHAR (); | |
1046 | } | |
1047 | if (!isDigit[(int)currentChar]) | |
1048 | { | |
1049 | LocalUserError ("digit must follow exponent"); | |
1050 | } | |
1051 | while (isDigit[(int)currentChar]) | |
1052 | { | |
1053 | LCLMOVECHAR (); | |
1054 | } | |
1055 | } | |
1056 | if (currentChar == 'f' || | |
1057 | currentChar == 'l' || | |
1058 | currentChar == 'F' || | |
1059 | currentChar == 'L') | |
1060 | { | |
1061 | LCLMOVECHAR (); | |
1062 | } | |
1063 | /*@switchbreak@*/ break; | |
1064 | ||
1065 | case 'e': | |
1066 | case 'E': | |
1067 | LCLMOVECHAR (); | |
1068 | tokenCode = LLT_CFLOAT; | |
1069 | if (currentChar == '+' || currentChar == '-') | |
1070 | { | |
1071 | LCLMOVECHAR (); | |
1072 | } | |
1073 | if (!isDigit[(int)currentChar]) | |
1074 | { | |
1075 | LocalUserError ("digit must follow exponent"); | |
1076 | } | |
1077 | while (isDigit[(int)currentChar]) | |
1078 | { | |
1079 | LCLMOVECHAR (); | |
1080 | } | |
1081 | if (currentChar == 'f' || | |
1082 | currentChar == 'l' || | |
1083 | currentChar == 'F' || | |
1084 | currentChar == 'L') | |
1085 | { | |
1086 | LCLMOVECHAR (); | |
1087 | } | |
1088 | ||
1089 | /*@switchbreak@*/ break; | |
1090 | default: | |
1091 | switch (currentChar) | |
1092 | { | |
1093 | case 'u': | |
1094 | case 'U': | |
1095 | LCLMOVECHAR (); | |
1096 | if (currentChar == 'l' || currentChar == 'L') | |
1097 | { | |
1098 | LCLMOVECHAR (); | |
1099 | } | |
1100 | /*@switchbreak@*/ break; | |
1101 | case 'l': | |
1102 | case 'L': | |
1103 | LCLMOVECHAR (); | |
1104 | if (currentChar == 'u' || currentChar == 'U') | |
1105 | { | |
1106 | LCLMOVECHAR (); | |
1107 | } | |
1108 | /*@switchbreak@*/ break; | |
1109 | } | |
1110 | /*@switchbreak@*/ break; | |
1111 | } | |
1112 | } | |
1113 | else | |
1114 | { | |
1115 | LocalUserError ("invalid C number"); | |
1116 | } | |
1117 | break; | |
1118 | ||
1119 | ||
1120 | } | |
1121 | ||
1122 | *bufPtr = '\0'; | |
1123 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1124 | } | |
1125 | ||
1126 | static void ScanOther (void) | |
1127 | { | |
1128 | switch (LCLScanCharClass (currentChar)) | |
1129 | { | |
1130 | case CHC_NULL: | |
1131 | tokenSym = lsymbol_fromChars ("E O L"); | |
1132 | tokenCode = LLT_EOL; | |
1133 | break; | |
1134 | ||
1135 | /* identifiers */ | |
1136 | ||
1137 | case IDCHAR: | |
1138 | ||
1139 | while (LCLScanCharClass (currentChar) == IDCHAR) | |
1140 | { /* identifier: find end */ | |
1141 | LCLMOVECHAR (); | |
1142 | } | |
1143 | ||
1144 | *bufPtr = '\0'; /* null terminate in buffer */ | |
1145 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1146 | tokenCode = simpleId; | |
1147 | break; | |
1148 | ||
1149 | /* one-character tokens */ | |
1150 | ||
1151 | case SINGLECHAR: | |
1152 | case PERMCHAR: | |
1153 | LCLMOVECHAR (); | |
1154 | *bufPtr = '\0'; | |
1155 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1156 | tokenCode = simpleOp; | |
1157 | break; | |
1158 | ||
1159 | /* operator symbols */ | |
1160 | ||
1161 | case OPCHAR: | |
1162 | ||
1163 | if (currentChar == '.' && LOOKAHEADCHAR () == '.' && | |
1164 | LOOKAHEADTWICECHAR () == '.') | |
1165 | { | |
1166 | LCLMOVECHAR (); | |
1167 | LCLMOVECHAR (); | |
1168 | LCLMOVECHAR (); | |
1169 | *bufPtr = '\0'; | |
1170 | tokenSym = lsymbol_fromChars ("..."); | |
1171 | tokenCode = LLT_TELIPSIS; | |
1172 | } | |
1173 | else | |
1174 | { | |
1175 | if (currentChar == '/' && LOOKAHEADCHAR () == '\\') | |
1176 | { | |
1177 | LCLMOVECHAR (); | |
1178 | LCLMOVECHAR (); | |
1179 | } | |
1180 | else | |
1181 | { | |
1182 | while (LCLScanCharClass (currentChar) == OPCHAR) | |
1183 | { | |
1184 | LCLMOVECHAR (); | |
1185 | } | |
1186 | } | |
1187 | ||
1188 | *bufPtr = '\0'; | |
1189 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1190 | tokenCode = simpleOp; | |
1191 | } | |
1192 | break; | |
1193 | ||
1194 | /* white space */ | |
1195 | case WHITECHAR: | |
1196 | /*@-loopswitchbreak@*/ | |
1197 | /*@-switchswitchbreak@*/ | |
1198 | switch (currentChar) | |
1199 | { | |
1200 | case '\t': | |
1201 | LCLMOVECHAR (); /* tabs only count as one character */ | |
1202 | break; | |
1203 | ||
1204 | case '\v': | |
1205 | case '\f': | |
1206 | LCLMOVECHAR (); | |
1207 | colNumber--; /* does not change column */ | |
1208 | break; | |
1209 | ||
1210 | default: | |
1211 | LCLMOVECHAR (); | |
1212 | break; | |
1213 | } | |
1214 | /*@=switchswitchbreak@*/ | |
1215 | ||
1216 | *bufPtr = '\0'; | |
1217 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1218 | tokenCode = LLT_WHITESPACE; | |
1219 | break; | |
1220 | ||
1221 | /* symbols */ | |
1222 | ||
1223 | case CHC_EXTENSION: | |
1224 | LCLMOVECHAR (); | |
1225 | ||
1226 | /*@-switchswitchbreak@*/ | |
1227 | switch (currentChar) | |
1228 | { | |
1229 | /* open and close */ | |
1230 | case '(': | |
1231 | LCLMOVECHAR (); | |
1232 | while (LCLScanCharClass (currentChar) == IDCHAR) | |
1233 | { | |
1234 | LCLMOVECHAR (); | |
1235 | } | |
1236 | *bufPtr = '\0'; | |
1237 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1238 | tokenCode = openSym; | |
1239 | break; | |
1240 | ||
1241 | case ')': | |
1242 | LCLMOVECHAR (); | |
1243 | while (LCLScanCharClass (currentChar) == IDCHAR) | |
1244 | { | |
1245 | LCLMOVECHAR (); | |
1246 | } | |
1247 | *bufPtr = '\0'; | |
1248 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1249 | tokenCode = closeSym; | |
1250 | break; | |
1251 | ||
1252 | /* separator */ | |
1253 | case ',': | |
1254 | LCLMOVECHAR (); | |
1255 | while (LCLScanCharClass (currentChar) == IDCHAR) | |
1256 | { | |
1257 | LCLMOVECHAR (); | |
1258 | } | |
1259 | *bufPtr = '\0'; | |
1260 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1261 | tokenCode = sepSym; | |
1262 | break; | |
1263 | ||
1264 | /* simpleid */ | |
1265 | case ':': | |
1266 | LCLMOVECHAR (); | |
1267 | while (LCLScanCharClass (currentChar) == IDCHAR) | |
1268 | { | |
1269 | LCLMOVECHAR (); | |
1270 | } | |
1271 | *bufPtr = '\0'; | |
1272 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1273 | tokenCode = simpleId; | |
1274 | break; | |
1275 | ||
1276 | default: | |
1277 | if (LCLScanCharClass (currentChar) == IDCHAR) | |
1278 | { | |
1279 | do | |
1280 | { | |
1281 | LCLMOVECHAR (); | |
1282 | } | |
1283 | while (LCLScanCharClass (currentChar) == IDCHAR); | |
1284 | *bufPtr = '\0'; | |
1285 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1286 | tokenCode = simpleOp; | |
1287 | } | |
1288 | else | |
1289 | { | |
1290 | /* | |
1291 | ** Meets none of the above. Take the extension | |
1292 | ** character and the character following and treat | |
1293 | ** together as a SINGLECHAR. SINGLECHARs tranlate into | |
1294 | ** SIMPLEOPs. | |
1295 | */ | |
1296 | ||
1297 | LCLMOVECHAR (); | |
1298 | *bufPtr = '\0'; | |
1299 | tokenSym = lsymbol_fromChars (&tokenBuffer[0]); | |
1300 | tokenCode = simpleOp; | |
1301 | } | |
1302 | break; | |
1303 | /*@=switchswitchbreak@*/ | |
1304 | } | |
1305 | break; | |
1306 | ||
1307 | default: | |
1308 | LocalUserError ("unexpected character in input"); | |
1309 | return; | |
1310 | } | |
1311 | /*@=loopswitchbreak@*/ | |
1312 | } | |
1313 | ||
1314 | static bool | |
1315 | nextCanBeCharLiteral (ltokenCode c) | |
1316 | { | |
1317 | switch (c) | |
1318 | { | |
1319 | /* A ' following these tokens starts a C character literal. */ | |
1320 | case logicalOp: | |
1321 | case equationSym: | |
1322 | case eqSepSym: | |
1323 | case openSym: | |
1324 | case sepSym: | |
1325 | case simpleOp: | |
1326 | case LLT_COMMA: | |
1327 | case LLT_EQUALS: | |
1328 | case LLT_LBRACE: | |
1329 | case LLT_LBRACKET: | |
1330 | case LLT_LPAR: | |
1331 | case eqOp: | |
1332 | case LLT_BE: | |
1333 | case LLT_ELSE: | |
1334 | case LLT_ENSURES: | |
1335 | case LLT_IF: | |
1336 | case LLT_CONSTRAINT: | |
1337 | case LLT_REQUIRES: | |
1338 | case LLT_CHECKS: | |
1339 | case LLT_BODY: | |
1340 | case LLT_THEN: | |
1341 | return (TRUE); | |
1342 | ||
1343 | /* A ' following these tokens means post */ | |
1344 | case selectSym: | |
1345 | case closeSym: | |
1346 | case simpleId: | |
1347 | case preSym: | |
1348 | case anySym: | |
1349 | case postSym: | |
1350 | case LLT_QUOTE: | |
1351 | case LLT_RBRACE: | |
1352 | case LLT_RBRACKET: | |
1353 | case LLT_RPAR: | |
1354 | case LLT_RESULT: | |
1355 | return (FALSE); | |
1356 | ||
1357 | /* Neither a C character literal nor post should follow these tokens */ | |
1358 | case quantifierSym: | |
1359 | case mapSym: | |
1360 | case markerSym: | |
1361 | case LLT_COLON: | |
1362 | case LLT_SEMI: | |
1363 | case LLT_VERTICALBAR: | |
1364 | case LLT_MULOP: | |
1365 | case LLT_CCHAR: | |
1366 | case LLT_CFLOAT: | |
1367 | case LLT_CINTEGER: | |
1368 | case LLT_LCSTRING: | |
1369 | case LLT_ALL: | |
1370 | case LLT_ANYTHING: | |
1371 | case LLT_CONSTANT: | |
1372 | case LLT_FOR: | |
1373 | case LLT_IMMUTABLE: | |
1374 | case LLT_OBJ: | |
1375 | case LLT_OUT: | |
1376 | case LLT_IMPORTS: | |
1377 | case LLT_ISSUB: | |
1378 | case LLT_LET: | |
1379 | case LLT_MODIFIES: | |
1380 | case LLT_CLAIMS: | |
1381 | case LLT_MUTABLE: | |
1382 | case LLT_FRESH: | |
1383 | case LLT_NOTHING: | |
1384 | case LLT_PRIVATE: | |
1385 | case LLT_SPEC: | |
1386 | case LLT_SIZEOF: | |
1387 | case LLT_TAGGEDUNION: | |
1388 | case LLT_TYPE: | |
1389 | case LLT_UNCHANGED: | |
1390 | case LLT_USES: | |
1391 | case LLT_CHAR: | |
1392 | case LLT_CONST: | |
1393 | case LLT_DOUBLE: | |
1394 | case LLT_ENUM: | |
1395 | case LLT_FLOAT: | |
1396 | case LLT_INT: | |
1397 | case LLT_TYPEDEF_NAME: | |
1398 | case LLT_LONG: | |
1399 | case LLT_SHORT: | |
1400 | case LLT_STRUCT: | |
1401 | case LLT_SIGNED: | |
1402 | case LLT_UNKNOWN: | |
1403 | case LLT_UNION: | |
1404 | case LLT_UNSIGNED: | |
1405 | case LLT_VOID: | |
1406 | case LLT_VOLATILE: | |
1407 | return (FALSE); | |
1408 | ||
1409 | /* These tokens should have been ignored */ | |
1410 | case NOTTOKEN: | |
1411 | case commentSym: | |
1412 | case LLT_WHITESPACE: | |
1413 | case LLT_EOL: | |
1414 | case LEOFTOKEN: | |
1415 | llcontbuglit ("scanline: nextCanBeChar"); | |
1416 | return FALSE; | |
1417 | BADDEFAULT; | |
1418 | } | |
1419 | ||
1420 | BADEXIT; | |
1421 | } | |
1422 | ||
1423 | void | |
1424 | LCLScanLine (char *line) | |
1425 | { | |
1426 | ltoken newToken; | |
1427 | lsymbol CCommentSym = lsymbol_fromChars ("/*"); | |
1428 | size_t linelength = strlen (line); | |
1429 | static bool inSpecComment = FALSE; | |
1430 | ||
1431 | line[(int)linelength] = '\n'; | |
1432 | ||
1433 | currentLine = line; | |
1434 | currentChar = *currentLine++; | |
1435 | context_processedSpecLine (); | |
1436 | ||
1437 | incLine (); | |
1438 | colNumber = 1; | |
1439 | ||
1440 | if (inComment) | |
1441 | { | |
1442 | ScanCComment (); | |
1443 | ||
1444 | if (reportComments) | |
1445 | { | |
1446 | *bufPtr = '\0'; | |
1447 | newToken = ltoken_createRaw (simpleId, lsymbol_fromChars (&tokenBuffer[0])); | |
1448 | LCLScanFreshToken (newToken); | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | if (inSpecComment) | |
1453 | { | |
1454 | if (currentChar == '*' && | |
1455 | LOOKAHEADCHAR () == '/') | |
1456 | { | |
1457 | LCLMOVECHAR (); | |
1458 | LCLMOVECHAR (); | |
1459 | inSpecComment = FALSE; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | /*@+loopexec@*/ | |
1464 | for (;;) | |
1465 | { | |
1466 | if (inSpecComment && currentChar == '*' && LOOKAHEADCHAR () == '/') | |
1467 | { | |
1468 | LCLMOVECHAR (); | |
1469 | LCLMOVECHAR (); | |
1470 | inSpecComment = FALSE; | |
1471 | } | |
1472 | ||
1473 | bufPtr = &tokenBuffer[0]; | |
1474 | startCol = colNumber; | |
1475 | ||
1476 | ||
1477 | /*@-loopswitchbreak@*/ | |
1478 | switch (startClass[(int)currentChar]) | |
1479 | { | |
1480 | case STARTCNUM: | |
1481 | ScanCNumber (); | |
1482 | break; | |
1483 | ||
1484 | case STARTCNUMDOT: | |
1485 | if (isDigit[(int) LOOKAHEADCHAR ()]) | |
1486 | { | |
1487 | ScanCNumber (); | |
1488 | } | |
1489 | else | |
1490 | { | |
1491 | ScanOther (); | |
1492 | } | |
1493 | break; | |
1494 | ||
1495 | case STARTCSTR: | |
1496 | ScanCString (); | |
1497 | break; | |
1498 | ||
1499 | case STARTCCHAR: | |
1500 | if (nextCanBeCharLiteral (prevTokenCode)) | |
1501 | { | |
1502 | ScanCChar (); | |
1503 | } | |
1504 | else | |
1505 | { | |
1506 | ScanOther (); | |
1507 | } | |
1508 | break; | |
1509 | ||
1510 | case STARTWIDE: | |
1511 | if (LOOKAHEADCHAR () == 'L' && LOOKAHEADTWICECHAR () == '\"') | |
1512 | { | |
1513 | ScanCString (); | |
1514 | } | |
1515 | else if (LOOKAHEADCHAR () == 'L' && LOOKAHEADTWICECHAR () == '\'') | |
1516 | { | |
1517 | ScanCChar (); | |
1518 | } | |
1519 | else | |
1520 | { | |
1521 | ScanOther (); | |
1522 | } | |
1523 | break; | |
1524 | ||
1525 | case STARTSLASH: | |
1526 | if (LOOKAHEADCHAR () == '*') | |
1527 | { | |
1528 | LCLMOVECHAR (); | |
1529 | LCLMOVECHAR (); | |
1530 | ||
1531 | if (currentChar == '@') | |
1532 | { | |
1533 | char *s = mstring_createEmpty (); | |
1534 | ||
1535 | LCLMOVECHAR (); | |
1536 | ||
1537 | while (currentChar != '\0' && currentChar != ' ' | |
1538 | && currentChar != '*' && currentChar != '\t' && | |
1539 | currentChar != '\n') | |
1540 | { | |
1541 | s = mstring_append (s, currentChar); | |
1542 | LCLMOVECHAR (); | |
1543 | } | |
1544 | ||
1545 | if (mstring_equal (s, "alt")) | |
1546 | { | |
1547 | tokenCode = LLT_VERTICALBAR; | |
1548 | tokenSym = lsymbol_fromChars ("|"); | |
1549 | inSpecComment = TRUE; | |
1550 | } | |
1551 | else | |
1552 | { | |
1553 | ScanCComment (); | |
1554 | tokenCode = commentSym; | |
1555 | tokenSym = CCommentSym; | |
1556 | } | |
1557 | ||
1558 | sfree (s); | |
1559 | break; | |
1560 | } | |
1561 | else | |
1562 | { | |
1563 | ScanCComment (); | |
1564 | tokenCode = commentSym; | |
1565 | tokenSym = CCommentSym; | |
1566 | break; | |
1567 | } | |
1568 | } | |
1569 | else | |
1570 | { | |
1571 | ScanOther (); | |
1572 | } break; | |
1573 | ||
1574 | case STARTOTHER: | |
1575 | ScanOther (); | |
1576 | break; | |
1577 | ||
1578 | default: | |
1579 | llcontbuglit ("LCLScanLine: bad case"); | |
1580 | break; | |
1581 | ||
1582 | } | |
1583 | /*@=loopswitchbreak@*/ | |
1584 | ||
1585 | /* | |
1586 | ** Above code only "guessed" at token type. Insert it into the | |
1587 | ** TokenTable. If the token already exists, it is returned as | |
1588 | ** previously defined. If it does not exist, it is inserted as the | |
1589 | ** token code computed above. | |
1590 | */ | |
1591 | ||
1592 | newToken = LCLInsertToken (tokenCode, tokenSym, lsymbol_undefined, FALSE); | |
1593 | ||
1594 | ||
1595 | if (LCLIsSyn (ltoken_getText (newToken))) | |
1596 | { | |
1597 | /* | |
1598 | ** Token is a synonym. Get the actual token and set the raw | |
1599 | ** text to the synonym name. | |
1600 | */ | |
1601 | ||
1602 | newToken = ltoken_copy (LCLGetTokenForSyn (ltoken_getText (newToken))); | |
1603 | ||
1604 | ltoken_setRawText (newToken, tokenSym); | |
1605 | } | |
1606 | else | |
1607 | { | |
1608 | newToken = ltoken_copy (newToken); | |
1609 | } | |
1610 | ||
1611 | ltoken_setCol (newToken, startCol); | |
28bf4b0b | 1612 | ltoken_setLine (newToken, inputStream_thisLineNumber (LCLScanSource ())); |
1613 | ltoken_setFileName (newToken, inputStream_fileName (LCLScanSource ())); | |
616915dd | 1614 | |
1615 | if (ltoken_getCode (newToken) == commentSym) | |
1616 | { | |
1617 | if (tokenSym == CCommentSym) | |
1618 | { /* C-style comment */ | |
1619 | ltoken_free (commentTok); | |
1620 | commentTok = ltoken_copy (newToken); | |
1621 | ||
1622 | if (!inComment && reportComments) | |
1623 | { | |
1624 | *bufPtr = '\0'; | |
1625 | ltoken_setRawText (newToken, | |
1626 | lsymbol_fromChars (&tokenBuffer[0])); | |
1627 | LCLScanFreshToken (newToken); | |
1628 | } | |
1629 | else | |
1630 | { | |
1631 | ltoken_free (newToken); | |
1632 | } | |
1633 | } | |
1634 | else | |
1635 | { /* LSL-style comment */ | |
1636 | bufPtr = &tokenBuffer[0]; | |
1637 | while (!LCLIsEndComment (currentChar)) | |
1638 | { | |
1639 | LCLMOVECHAR (); | |
1640 | } | |
1641 | if (LCLScanCharClass (currentChar) != CHC_NULL) | |
1642 | { | |
1643 | /* Not EOL character. Toss it out. */ | |
1644 | LCLMOVECHAR (); | |
1645 | } | |
1646 | ||
1647 | if (reportComments) | |
1648 | { | |
1649 | *bufPtr = '\0'; | |
1650 | ltoken_setRawText (newToken, | |
1651 | lsymbol_fromChars (&tokenBuffer[0])); | |
1652 | LCLScanFreshToken (newToken); | |
1653 | } | |
1654 | else | |
1655 | { | |
1656 | ltoken_free (newToken); | |
1657 | } | |
1658 | } | |
1659 | } | |
1660 | else if (ltoken_getCode (newToken) == LLT_EOL) | |
1661 | { | |
1662 | if (reportEOL) | |
1663 | { | |
1664 | LCLScanFreshToken (newToken); | |
1665 | } | |
1666 | else | |
1667 | { | |
1668 | ltoken_free (newToken); | |
1669 | } | |
1670 | ||
1671 | line[(int) linelength] = '\0'; | |
1672 | return; | |
1673 | } | |
1674 | else if (ltoken_getCode (newToken) != LLT_WHITESPACE) | |
1675 | { | |
1676 | prevTokenCode = ltoken_getCode (newToken); | |
1677 | LCLScanFreshToken (newToken); | |
1678 | } | |
1679 | else | |
1680 | { | |
1681 | ltoken_free (newToken); | |
1682 | } | |
1683 | } /*@=loopexec@*/ | |
1684 | } | |
1685 | ||
1686 | /*@exposed@*/ ltoken | |
1687 | LCLScanEofToken (void) | |
1688 | { | |
1689 | ltoken t = LCLInsertToken (LEOFTOKEN, lsymbol_fromChars ("E O F"), 0, TRUE); | |
1690 | ||
1691 | if (inComment) | |
1692 | { | |
1693 | lclerror (commentTok, cstring_makeLiteral ("Unterminated comment")); | |
1694 | } | |
1695 | ||
1696 | ltoken_setCol (t, colNumber); | |
28bf4b0b | 1697 | ltoken_setLine (t, inputStream_thisLineNumber (LCLScanSource ())); |
1698 | ltoken_setFileName (t, inputStream_fileName (LCLScanSource ())); | |
616915dd | 1699 | |
1700 | return t; | |
1701 | } | |
1702 | ||
1703 | void | |
1704 | LCLReportEolTokens (bool setting) | |
1705 | { | |
1706 | reportEOL = setting; | |
1707 | } | |
1708 | ||
1709 | static void | |
1710 | LocalUserError (char *msg) | |
1711 | { | |
28bf4b0b | 1712 | inputStream s = LCLScanSource (); |
1713 | llfatalerror (message ("%s:%d,%d: %s", | |
1714 | inputStream_fileName (s), | |
1715 | inputStream_thisLineNumber (s), | |
616915dd | 1716 | colNumber, |
1717 | cstring_fromChars (msg))); | |
1718 | } | |
1719 | ||
1720 | void | |
1721 | LCLScanLineInit (void) | |
1722 | { | |
1723 | int i; | |
1724 | ||
1725 | setCodePoint (); | |
1726 | reportEOL = FALSE; | |
1727 | reportComments = FALSE; | |
1728 | ||
1729 | for (i = 0; i <= LASTCHAR; i++) | |
1730 | { | |
1731 | LCLcharClass[i] = charClassDef[i]; | |
1732 | } | |
1733 | ||
1734 | setCodePoint (); | |
1735 | ||
1736 | /* | |
1737 | ** Make sure first postion is never used because use the 0th index to | |
1738 | ** mean empty. | |
1739 | */ | |
1740 | ||
1741 | firstReserved = lsymbol_fromChars (FIRSTRESERVEDNAME); | |
1742 | setCodePoint (); | |
1743 | ||
1744 | /* Predefined LSL Tokens */ | |
1745 | ||
1746 | ltoken_forall = LCLReserveToken (quantifierSym, "\\forall"); | |
1747 | setCodePoint (); | |
1748 | ltoken_exists = LCLReserveToken (quantifierSym, "\\exists"); | |
1749 | ltoken_implies = LCLReserveToken (logicalOp, "\\implies"); | |
1750 | ltoken_eqsep = LCLReserveToken (eqSepSym, "\\eqsep"); | |
1751 | ltoken_select = LCLReserveToken (selectSym, "\\select"); | |
1752 | ltoken_open = LCLReserveToken (openSym, "\\open"); | |
1753 | ltoken_sep = LCLReserveToken (sepSym, "\\,"); | |
1754 | ltoken_close = LCLReserveToken (closeSym, "\\close"); | |
1755 | ltoken_id = LCLReserveToken (simpleId, "\\:"); | |
1756 | ltoken_arrow = LCLReserveToken (mapSym, "\\arrow"); | |
1757 | ltoken_marker = LCLReserveToken (markerSym, "\\marker"); | |
1758 | ltoken_pre = LCLReserveToken (preSym, "\\pre"); | |
1759 | ltoken_post = LCLReserveToken (postSym, "\\post"); | |
1760 | ltoken_comment = LCLReserveToken (commentSym, "\\comment"); | |
1761 | ltoken_any = LCLReserveToken (anySym, "\\any"); | |
1762 | ||
1763 | ltoken_result = LCLReserveToken (LLT_RESULT, "result"); | |
1764 | ltoken_typename = LCLReserveToken (LLT_TYPEDEF_NAME, "TYPEDEF_NAME"); | |
1765 | ltoken_setIdType (ltoken_typename, SID_TYPE); | |
1766 | ||
1767 | /* | |
1768 | ** Not context_getBoolName () --- "bool" is built in to LCL. | |
1769 | ** This is bogus, but necessary for a lot of old lcl files. | |
1770 | */ | |
1771 | ||
1772 | ltoken_bool = LCLReserveToken (LLT_TYPEDEF_NAME, "bool"); | |
1773 | ||
1774 | ltoken_lbracked = LCLReserveToken (LLT_LBRACKET, "["); | |
1775 | ltoken_rbracket = LCLReserveToken (LLT_RBRACKET, "]"); | |
1776 | ||
1777 | (void) LCLReserveToken (LLT_COLON, ":"); | |
1778 | (void) LCLReserveToken (LLT_COMMA, ","); | |
1779 | ||
1780 | (void) LCLReserveToken (LLT_EQUALS, "="); | |
1781 | (void) LCLReserveToken (LLT_LBRACE, "{"); | |
1782 | (void) LCLReserveToken (LLT_LPAR, "("); | |
1783 | (void) LCLReserveToken (LLT_RBRACE, "}"); | |
1784 | (void) LCLReserveToken (LLT_RPAR, ")"); | |
1785 | (void) LCLReserveToken (LLT_SEMI, ";"); | |
1786 | (void) LCLReserveToken (LLT_VERTICALBAR, "|"); | |
1787 | ||
1788 | (void) LCLReserveToken (LLT_MULOP, "*"); | |
1789 | ||
1790 | (void) LCLReserveToken (LLT_WHITESPACE, " "); | |
1791 | (void) LCLReserveToken (LLT_WHITESPACE, "\t"); | |
1792 | (void) LCLReserveToken (LLT_WHITESPACE, "\f"); | |
1793 | (void) LCLReserveToken (LLT_WHITESPACE, "\n"); | |
1794 | ||
1795 | (void) LCLReserveToken (LEOFTOKEN, "E O F"); | |
1796 | (void) LCLReserveToken (LLT_EOL, "E O L"); | |
1797 | ||
1798 | /* LSL Keywords */ | |
1799 | ltoken_and = LCLReserveToken (logicalOp, "\\and"); | |
1800 | ltoken_or = LCLReserveToken (logicalOp, "\\or"); | |
1801 | ||
1802 | ltoken_equals = LCLReserveToken (equationSym, "\\equals"); | |
1803 | ||
1804 | ltoken_eq = LCLReserveToken (eqOp, "\\eq"); | |
1805 | ltoken_neq = LCLReserveToken (eqOp, "\\neq"); | |
1806 | ||
1807 | ltoken_not = LCLReserveToken (simpleOp, "\\not"); | |
1808 | ltoken_true = LCLReserveToken (simpleId, "true"); | |
1809 | ltoken_false = LCLReserveToken (simpleId, "false"); | |
1810 | ||
1811 | /* LCL Keywords */ | |
1812 | (void) LCLReserveToken (LLT_ALL, "all"); | |
1813 | (void) LCLReserveToken (LLT_ANYTHING, "anything"); | |
1814 | (void) LCLReserveToken (LLT_BE, "be"); | |
1815 | (void) LCLReserveToken (LLT_CONSTANT, "constant"); | |
1816 | (void) LCLReserveToken (LLT_CHECKS, "checks"); | |
1817 | (void) LCLReserveToken (LLT_ELSE, "else"); | |
1818 | (void) LCLReserveToken (LLT_ENSURES, "ensures"); | |
1819 | (void) LCLReserveToken (LLT_FOR, "for"); | |
1820 | (void) LCLReserveToken (LLT_IF, "if"); | |
1821 | (void) LCLReserveToken (LLT_IMMUTABLE, "immutable"); | |
1822 | (void) LCLReserveToken (LLT_OBJ, "obj"); | |
1823 | (void) LCLReserveToken (LLT_OUT, "out"); | |
1824 | (void) LCLReserveToken (LLT_ITER, "iter"); | |
1825 | (void) LCLReserveToken (LLT_YIELD, "yield"); | |
1826 | (void) LCLReserveToken (LLT_PARTIAL, "partial"); | |
1827 | (void) LCLReserveToken (LLT_ONLY, "only"); | |
1828 | (void) LCLReserveToken (LLT_UNDEF, "undef"); | |
1829 | (void) LCLReserveToken (LLT_KILLED, "killed"); | |
1830 | (void) LCLReserveToken (LLT_OWNED, "owned"); | |
1831 | (void) LCLReserveToken (LLT_DEPENDENT, "dependent"); | |
1832 | (void) LCLReserveToken (LLT_PARTIAL, "partial"); | |
1833 | (void) LCLReserveToken (LLT_RELDEF, "reldef"); | |
1834 | (void) LCLReserveToken (LLT_KEEP, "keep"); | |
1835 | (void) LCLReserveToken (LLT_KEPT, "kept"); | |
1836 | (void) LCLReserveToken (LLT_TEMP, "temp"); | |
1837 | (void) LCLReserveToken (LLT_SHARED, "shared"); | |
1838 | (void) LCLReserveToken (LLT_RELNULL, "relnull"); | |
1839 | (void) LCLReserveToken (LLT_RELDEF, "reldef"); | |
1840 | (void) LCLReserveToken (LLT_CHECKED, "checked"); | |
1841 | (void) LCLReserveToken (LLT_UNCHECKED, "unchecked"); | |
1842 | (void) LCLReserveToken (LLT_CHECKEDSTRICT, "checkedstrict"); | |
1843 | (void) LCLReserveToken (LLT_CHECKMOD, "checkmod"); | |
1844 | (void) LCLReserveToken (LLT_TRUENULL, "truenull"); | |
1845 | (void) LCLReserveToken (LLT_FALSENULL, "falsenull"); | |
1846 | (void) LCLReserveToken (LLT_LNULL, "null"); | |
1847 | (void) LCLReserveToken (LLT_LNOTNULL, "notnull"); | |
1848 | (void) LCLReserveToken (LLT_RETURNED, "returned"); | |
1849 | (void) LCLReserveToken (LLT_OBSERVER, "observer"); | |
1850 | (void) LCLReserveToken (LLT_EXPOSED, "exposed"); | |
1851 | (void) LCLReserveToken (LLT_REFCOUNTED, "refcounted"); | |
1852 | (void) LCLReserveToken (LLT_REFS, "refs"); | |
1853 | (void) LCLReserveToken (LLT_NEWREF, "newref"); | |
1854 | (void) LCLReserveToken (LLT_TEMPREF, "tempref"); | |
1855 | (void) LCLReserveToken (LLT_KILLREF, "killref"); | |
1856 | (void) LCLReserveToken (LLT_NULLTERMINATED, "nullterminated"); | |
1857 | (void) LCLReserveToken (LLT_EXITS, "exits"); | |
1858 | (void) LCLReserveToken (LLT_MAYEXIT, "mayexit"); | |
1859 | (void) LCLReserveToken (LLT_TRUEEXIT, "trueexit"); | |
1860 | (void) LCLReserveToken (LLT_FALSEEXIT, "falseexit"); | |
1861 | (void) LCLReserveToken (LLT_NEVEREXIT, "neverexit"); | |
1862 | (void) LCLReserveToken (LLT_SEF, "sef"); | |
1863 | (void) LCLReserveToken (LLT_UNUSED, "unused"); | |
1864 | (void) LCLReserveToken (LLT_UNIQUE, "unique"); | |
1865 | (void) LCLReserveToken (LLT_IMPORTS, "imports"); | |
1866 | (void) LCLReserveToken (LLT_CONSTRAINT, "constraint"); | |
1867 | (void) LCLReserveToken (LLT_LET, "let"); | |
1868 | (void) LCLReserveToken (LLT_MODIFIES, "modifies"); | |
1869 | (void) LCLReserveToken (LLT_CLAIMS, "claims"); | |
1870 | (void) LCLReserveToken (LLT_BODY, "body"); | |
1871 | (void) LCLReserveToken (LLT_MUTABLE, "mutable"); | |
1872 | (void) LCLReserveToken (LLT_FRESH, "fresh"); | |
1873 | (void) LCLReserveToken (LLT_NOTHING, "nothing"); | |
1874 | (void) LCLReserveToken (LLT_INTERNAL, "internalState"); | |
1875 | (void) LCLReserveToken (LLT_FILESYS, "fileSystem"); | |
1876 | (void) LCLReserveToken (LLT_PRIVATE, "private"); | |
1877 | (void) LCLReserveToken (LLT_SPEC, "spec"); | |
1878 | (void) LCLReserveToken (LLT_REQUIRES, "requires"); | |
1879 | (void) LCLReserveToken (LLT_SIZEOF, "sizeof"); | |
1880 | (void) LCLReserveToken (LLT_TAGGEDUNION, "taggedunion"); | |
1881 | (void) LCLReserveToken (LLT_THEN, "then"); | |
1882 | (void) LCLReserveToken (LLT_TYPE, "type"); | |
1883 | (void) LCLReserveToken (LLT_TYPEDEF, "typedef"); | |
1884 | (void) LCLReserveToken (LLT_UNCHANGED, "unchanged"); | |
1885 | (void) LCLReserveToken (LLT_USES, "uses"); | |
1886 | (void) LCLReserveToken (LLT_PRINTFLIKE, "printflike"); | |
1887 | (void) LCLReserveToken (LLT_SCANFLIKE, "scanflike"); | |
1888 | (void) LCLReserveToken (LLT_MESSAGELIKE, "messagelike"); | |
1889 | ||
1890 | /* LCL C Keywords */ | |
1891 | (void) LCLReserveToken (LLT_CHAR, "char"); | |
1892 | (void) LCLReserveToken (LLT_CONST, "const"); | |
1893 | (void) LCLReserveToken (LLT_DOUBLE, "double"); | |
1894 | (void) LCLReserveToken (LLT_ENUM, "enum"); | |
1895 | ||
1896 | /* comment out so we can add in lclinit.lci: synonym double float */ | |
1897 | /* LCLReserveToken (LLT_FLOAT, "float"); */ | |
1898 | /* But we need to make the scanner parse "float" not as a simpleId, but | |
1899 | as a TYPEDEF_NAME. This is done later in abstract_init */ | |
1900 | ||
1901 | (void) LCLReserveToken (LLT_INT, "int"); | |
1902 | (void) LCLReserveToken (LLT_LONG, "long"); | |
1903 | (void) LCLReserveToken (LLT_SHORT, "short"); | |
1904 | (void) LCLReserveToken (LLT_STRUCT, "struct"); | |
1905 | (void) LCLReserveToken (LLT_SIGNED, "signed"); | |
1906 | (void) LCLReserveToken (LLT_UNION, "union"); | |
1907 | (void) LCLReserveToken (LLT_UNKNOWN, "__unknown"); | |
1908 | (void) LCLReserveToken (LLT_UNSIGNED, "unsigned"); | |
1909 | (void) LCLReserveToken (LLT_VOID, "void"); | |
1910 | (void) LCLReserveToken (LLT_VOLATILE, "volatile"); | |
1911 | setCodePoint (); | |
1912 | } | |
1913 | ||
1914 | void | |
1915 | LCLScanLineReset (void) | |
1916 | { | |
1917 | inComment = FALSE; | |
1918 | prevTokenCode = LLT_LPAR; /* Presume first ' starts literal */ | |
1919 | } | |
1920 | ||
1921 | void | |
1922 | LCLScanLineCleanup (void) | |
1923 | { | |
1924 | } | |
1925 | ||
1926 | bool LCLIsEndComment (char c) | |
1927 | { | |
1928 | return LCLcharClass[(int)(c)].endCommentChar; | |
1929 | } | |
1930 | ||
1931 | charCode LCLScanCharClass (char c) | |
1932 | { | |
1933 | return LCLcharClass[(int)(c)].code; | |
1934 | } | |
1935 | ||
1936 | void LCLSetCharClass (char c, charCode cod) | |
1937 | { | |
1938 | LCLcharClass[(int)(c)].code = (cod); | |
1939 | } | |
1940 | ||
1941 | void LCLSetEndCommentChar (char c, bool flag) | |
1942 | { | |
1943 | LCLcharClass[(int)(c)].endCommentChar = flag; | |
1944 | } | |
1945 |