]> andersk Git - splint.git/blame - src/signature.y
Added the code for setBufferSize and setStringLegnth annotations.
[splint.git] / src / signature.y
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885824d3 1/*;-*-C-*-;
2** Copyright (c) Massachusetts Institute of Technology 1994-1998.
3** All Rights Reserved.
4** Unpublished rights reserved under the copyright laws of
5** the United States.
6**
7** THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
8** OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
9**
10** This code is distributed freely and may be used freely under the
11** following conditions:
12**
13** 1. This notice may not be removed or altered.
14**
15** 2. Works derived from this code are not distributed for
16** commercial gain without explicit permission from MIT
17** (for permission contact lclint-request@sds.lcs.mit.edu).
18*/
19/*
20** Copyright (c) Massachusetts Institute of Technology, 1993
21** All Rights Reserved. Unpublished rights reserved
22** under the copyright laws of the United States.
23**++
24** FACILITY: LSLC
25**
26** MODULE DESCRIPTION:
27**
28** FILENAME: signature.y
29**
30** PURPOSE: bison grammar for LSL signatures.
31**
32** AUTHOR:
33** Yang Meng Tan, Massachusetts Institute of Technology
34*/
35
36%{
37
38# include "bison.reset"
39
40# include <stdio.h>
41# include "lclintMacros.nf"
42# include "llbasic.h"
43# include "lslparse.h"
44# include "signature.h"
45
46void lslerror (char *);
47/*@dependent@*/ /*@null@*/ lslOp importedlslOp;
48
49/*@-noparams@*/ /* Can't list params since YYSTYPE isn't defined yet. */
50static void yyprint (/*FILE *p_file, int p_type, YYSTYPE p_value */);
51/*@=noparams@*/
52
53# define YYPRINT(file, type, value) yyprint (file, type, value)
54
55# define YYDEBUG 1
56
57# include "bison.head"
58
59%}
60
61%pure_parser
62
63/* CONVENTIONS: Reserved words are in ALL CAPS (plus markerSym)
64 Characters appearing in the grammar are reserved:
65 % ( ) , : \ */
66
67/* Changes made
68 - added LBRACKET stuff in OpForm (missing in LSL)
69 - dif from LCL: open vs openSym, close vs closeSym
70 - yylval vs yylval.tok
71*/
72
73%union {
74 ltoken ltok; /* a leaf is also an ltoken */
75 unsigned int count;
76 /*@only@*/ ltokenList ltokenList;
77 /*@only@*/ opFormNode opform;
78 /*@owned@*/ sigNode signature;
79 /*@only@*/ nameNode name;
80 /*@owned@*/ lslOp operator;
81 /*@only@*/ lslOpList operators;
82}
83
84%token <ltok> LST_SIMPLEID
85%token <ltok> LST_LOGICALOP /* \implies, \and, \not, \or */
86%token <ltok> LST_EQOP /* \eq, \neq, ==, != */
87%token <ltok> LST_SIMPLEOP /* opSym - reserved */
88%token <ltok> LST_MAPSYM /* LSL's -> */
89 /* FIELDMAPSYM = "\\field_arrow", only for LCL symtable import */
90%token <ltok> LST_FIELDMAPSYM /* LCL's struct field operator -> */
91%token <ltok> LST_MARKERSYM /* \marker, __ */
92%token <ltok> LST_ifTOKEN LST_thenTOKEN LST_elseTOKEN
93 /* different from LSL: separate LBRACKET from openSym and
94 RBRACKET from closeSym */
95%token <ltok> LST_LBRACKET LST_RBRACKET
96%token <ltok> LST_SELECTSYM /* \select or . */
97%token <ltok> LST_SEPSYM LST_OPENSYM LST_CLOSESYM
98%token <ltok> LST_COLON /* : */
99%token <ltok> LST_COMMA /* , */
100%token <ltok> LST_EOL LST_COMMENTSYM LST_WHITESPACE
101
102%token LST_WHITESPACE
103%token LST_QUANTIFIERSYM
104%token LST_EQUATIONSYM
105%token LST_EQSEPSYM
106%token LST_COMPOSESYM
107%token LST_LPAR
108%token LST_RPAR
109%token LST_assertsTOKEN
110%token LST_assumesTOKEN
111%token LST_byTOKEN
112%token LST_convertsTOKEN
113%token LST_enumerationTOKEN
114%token LST_equationsTOKEN
115%token LST_exemptingTOKEN
116%token LST_forTOKEN
117%token LST_generatedTOKEN
118%token LST_impliesTOKEN
119%token LST_includesTOKEN
120%token LST_introducesTOKEN
121%token LST_ofTOKEN
122%token LST_partitionedTOKEN
123%token LST_traitTOKEN
124%token LST_tupleTOKEN
125%token LST_unionTOKEN
126%token LST_BADTOKEN
127
128%type <ltok> anyOp separator sortId opId
129%type <count> middle placeList
130%type <ltokenList> domain sortList
131%type <opform> opForm
132%type <signature> signature
133%type <name> name
134%type <operator> operator
135%type <operators> operatorList top
136
137%%
138
139top: operatorList { lslOpList_free ($1); }
140
141operatorList: operator
142 { lslOpList x = lslOpList_new ();
143 g_importedlslOp = $1;
144 lslOpList_add (x, $1);
145 $$ = x; }
146 | operatorList operator
147 { lslOpList_add ($1, $2);
148 $$ = $1; }
149
150operator: name LST_COLON signature
151 { $$ = makelslOpNode ($1, $3); }
152/* The next production is never used in the output of lsl -syms
153 | name
154 { $$ = makelslOpNode ($1, (sigNode)0); } */
155
156name: opId /* check for the case of if_then_else */
157 { $$ = makeNameNodeId ($1); }
158 | opForm
159 { $$ = makeNameNodeForm ($1); }
160
161opForm
162 : LST_ifTOKEN LST_MARKERSYM LST_thenTOKEN LST_MARKERSYM LST_elseTOKEN LST_MARKERSYM
163 { $$ = makeOpFormNode ($1, OPF_IF, opFormUnion_createMiddle (0), ltoken_undefined); }
164 | anyOp
165 { $$ = makeOpFormNode ($1, OPF_ANYOP, opFormUnion_createAnyOp ($1), ltoken_undefined); }
166 | LST_MARKERSYM anyOp
167 { $$ = makeOpFormNode ($1, OPF_MANYOP, opFormUnion_createAnyOp ($2), ltoken_undefined); }
168 | anyOp LST_MARKERSYM
169 { $$ = makeOpFormNode ($1, OPF_ANYOPM, opFormUnion_createAnyOp ($1), ltoken_undefined); }
170 | LST_MARKERSYM anyOp LST_MARKERSYM
171 { $$ = makeOpFormNode ($1, OPF_MANYOPM, opFormUnion_createAnyOp ($2), ltoken_undefined); }
172 | LST_OPENSYM middle LST_CLOSESYM
173 { $$ = makeOpFormNode ($1, OPF_MIDDLE, opFormUnion_createMiddle ($2), $3); }
174 | LST_MARKERSYM LST_OPENSYM middle LST_CLOSESYM
175 { $$ = makeOpFormNode ($2, OPF_MMIDDLE, opFormUnion_createMiddle ($3), $4); }
176 | LST_OPENSYM middle LST_CLOSESYM LST_MARKERSYM
177 { $$ = makeOpFormNode ($1, OPF_MIDDLEM, opFormUnion_createMiddle ($2), $3); }
178 | LST_MARKERSYM LST_OPENSYM middle LST_CLOSESYM LST_MARKERSYM
179 { $$ = makeOpFormNode ($2, OPF_MMIDDLEM,
180 opFormUnion_createMiddle ($3), $4); }
181 | LST_LBRACKET middle LST_RBRACKET
182 { $$ = makeOpFormNode ($1, OPF_BMIDDLE,
183 opFormUnion_createMiddle ($2), $3); }
184 | LST_MARKERSYM LST_LBRACKET middle LST_RBRACKET
185 { $$ = makeOpFormNode ($2, OPF_BMMIDDLE,
186 opFormUnion_createMiddle ($3), $4); }
187 | LST_LBRACKET middle LST_RBRACKET LST_MARKERSYM
188 { $$ = makeOpFormNode ($1, OPF_BMIDDLEM,
189 opFormUnion_createMiddle ($2), $3); }
190 | LST_MARKERSYM LST_LBRACKET middle LST_RBRACKET LST_MARKERSYM
191 { $$ = makeOpFormNode ($2, OPF_BMMIDDLEM,
192 opFormUnion_createMiddle ($3), $4); }
193 | LST_SELECTSYM LST_SIMPLEID
194 { $$ = makeOpFormNode ($1, OPF_SELECT,
195 opFormUnion_createAnyOp ($2), ltoken_undefined); }
196 | LST_MARKERSYM LST_SELECTSYM LST_SIMPLEID
197 { $$ = makeOpFormNode ($1, OPF_MSELECT,
198 opFormUnion_createAnyOp ($3), ltoken_undefined); }
199 /* not in LSL, need FILEDMAPSYM to distinguish it from MAPSYM */
200 /* LST_FIELDMAPSYM = "\\field_arrow", only for LCL symtable import */
201 | LST_MARKERSYM LST_FIELDMAPSYM LST_SIMPLEID
202 { $$ = makeOpFormNode ($1, OPF_MMAP,
203 opFormUnion_createAnyOp ($3), ltoken_undefined); }
204
205
206anyOp: LST_SIMPLEOP
207 { $$ = $1; }
208 | LST_LOGICALOP
209 { $$ = $1; }
210 | LST_EQOP
211 { $$ = $1; }
212
213middle: /* empty */
214 { $$ = 0; }
215 | placeList
216 { $$ = $1; }
217
218placeList: LST_MARKERSYM
219 { $$ = 1; }
220 | placeList separator LST_MARKERSYM
221 { $$ = $1 + 1; }
222
223separator: LST_COMMA
224 { $$ = $1; }
225 | LST_SEPSYM
226 { $$ = $1; }
227
228signature: domain LST_MAPSYM sortId
229 { $$ = makesigNode ($2, $1, $3); }
230
231domain: /* empty */
232 { $$ = ltokenList_new (); }
233 | sortList
234 { $$ = $1; }
235
236sortList: sortId
237 { $$ = ltokenList_singleton ($1); }
238 | sortList LST_COMMA sortId
239 { $$ = ltokenList_push ($1, $3); }
240
241sortId: LST_SIMPLEID
242 {
243 $$ = $1;
244 ltoken_setText ($$, processTraitSortId (ltoken_getText ($1)));
245 }
246
247opId: LST_SIMPLEID
248 { $$ = $1; }
249%%
250
251# include "bison.reset"
252
253extern char *yytext;
254
255void lslerror (char *s)
256{
257 lclplainerror
258 (message ("An error has occurred in parsing LSL signature: %s",
259 cstring_fromChars (s)));
260}
261
262static void yyprint (FILE *file, int type, YYSTYPE value)
263{
264 fprintf (file, " (%u:%u type: %d; text: %s) ",
265 ltoken_getLine (value.ltok),
266 ltoken_getCol (value.ltok),
267 type,
268 ltoken_getRawTextChars (value.ltok));
269}
270
271extern void PrintToken (ltoken tok) {
272 char *codStr;
273
274 switch (ltoken_getCode (tok))
275 {
276 case NOTTOKEN: codStr = "*** NOTTOKEN ***"; break;
277 case LST_QUANTIFIERSYM: codStr = "QUANTIFIERSYM"; break;
278 case LST_LOGICALOP: codStr = "LOGICALOP: "; break;
279 case LST_SELECTSYM: codStr = "LST_SELECTSYM"; break;
280 case LST_OPENSYM: codStr = "LST_OPENSYM"; break;
281 case LST_SEPSYM: codStr = "SEPSYM"; break;
282 case LST_CLOSESYM: codStr = "LST_CLOSESYM"; break;
283 case LST_SIMPLEID: codStr = "LST_SIMPLEID"; break;
284 case LST_MAPSYM: codStr = "MAPSYM"; break;
285 case LST_MARKERSYM: codStr = "LST_MARKERSYM"; break;
286 case LST_COMMENTSYM: codStr = "COMMENTSYM"; break;
287 case LST_SIMPLEOP: codStr = "SIMPLEOP"; break;
288 case LST_COLON: codStr = "LST_COLON"; break;
289 case LST_COMMA: codStr = "COMMA"; break;
290 case LST_LBRACKET: codStr = "LST_LBRACKET"; break;
291 case LST_LPAR: codStr = "LST_LPAR"; break;
292 case LST_RBRACKET: codStr = "LST_RBRACKET"; break;
293 case LST_RPAR: codStr = "LST_RPAR"; break;
294 case LST_EQOP: codStr = "LST_EQOP"; break;
295 case LST_WHITESPACE: codStr = "WHITESPACE,"; break;
296 case LST_EOL: codStr = "LST_EOL"; break;
297 case LST_elseTOKEN: codStr = "elseTOKEN"; break;
298 case LST_ifTOKEN: codStr = "ifTOKEN"; break;
299 case LST_thenTOKEN: codStr = "thenTOKEN"; break;
300 case LST_BADTOKEN: codStr = "*** BADTOKEN ***"; break;
301 case LEOFTOKEN: /* can't reach LEOFTOKEN easily */
302 codStr = "LEOFTOKEN"; break;
303 default:
304 codStr = "*** invalid token code ***";
305 break;
306 } /* end switch */
307
308 /* only used for debugging */
309 printf ("%u:%u: Token Code (%u): %s",
310 ltoken_getLine (tok), ltoken_getCol (tok),
311 ltoken_getCode (tok), codStr);
312 if (ltoken_getRawText (tok) != 0)
313 {
314 printf (", Token String (%lu): %s\n",
315 ltoken_getRawText (tok), ltoken_getRawTextChars (tok));
316 }
317 else printf ("\n");
318}
319
320
321
322
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