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28bf4b0b | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2001 University of Virginia, | |
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 | ** | |
20 | ** For information on lclint: lclint-request@cs.virginia.edu | |
21 | ** To report a bug: lclint-bug@cs.virginia.edu | |
22 | ** For more information: http://lclint.cs.virginia.edu | |
23 | */ | |
24 | /* | |
25 | ** functionClause.c | |
26 | */ | |
27 | ||
28 | # include "lclintMacros.nf" | |
29 | # include "basic.h" | |
08eb3d0e | 30 | # include "mtincludes.h" |
28bf4b0b | 31 | |
32 | static /*@only@*/ /*@notnull@*/ /*@special@*/ functionClause /*@i32 need special? @*/ | |
33 | functionClause_alloc (functionClauseKind kind) /*@defines result->kind@*/ | |
34 | { | |
35 | functionClause res = (functionClause) dmalloc (sizeof (*res)); | |
36 | ||
37 | res->kind = kind; | |
38 | return res; | |
39 | } | |
40 | ||
41 | extern functionClause functionClause_createGlobals (globalsClause node) /*@*/ | |
42 | { | |
43 | functionClause res = functionClause_alloc (FCK_GLOBALS); | |
44 | res->val.globals = node; | |
45 | return res; | |
46 | } | |
47 | ||
48 | extern functionClause functionClause_createModifies (modifiesClause node) /*@*/ | |
49 | { | |
50 | functionClause res = functionClause_alloc (FCK_MODIFIES); | |
51 | res->val.modifies = node; | |
52 | return res; | |
53 | } | |
54 | ||
55 | extern functionClause functionClause_createState (stateClause node) /*@*/ | |
56 | { | |
57 | functionClause res = functionClause_alloc (FCK_STATE); | |
58 | res->val.state = node; | |
59 | return res; | |
60 | } | |
61 | ||
3814599d | 62 | extern functionClause functionClause_createEnsures (functionConstraint node) /*@*/ |
d9a28762 | 63 | { |
64 | functionClause res = functionClause_alloc (FCK_ENSURES); | |
3814599d | 65 | res->val.constraint = node; |
d9a28762 | 66 | return res; |
67 | } | |
68 | ||
3814599d | 69 | extern functionClause functionClause_createRequires (functionConstraint node) /*@*/ |
d9a28762 | 70 | { |
71 | functionClause res = functionClause_alloc (FCK_REQUIRES); | |
3814599d | 72 | res->val.constraint = node; |
08eb3d0e | 73 | return res; |
74 | } | |
75 | ||
28bf4b0b | 76 | extern functionClause functionClause_createWarn (warnClause node) /*@*/ |
77 | { | |
78 | functionClause res = functionClause_alloc (FCK_WARN); | |
79 | res->val.warn = node; | |
80 | return res; | |
81 | } | |
82 | ||
83 | /*@only@*/ cstring functionClause_unparse (functionClause p) | |
84 | { | |
85 | if (functionClause_isUndefined (p)) | |
86 | { | |
87 | return cstring_undefined; | |
88 | } | |
89 | ||
90 | switch (p->kind) | |
91 | { | |
92 | case FCK_GLOBALS: | |
93 | return globalsClause_unparse (p->val.globals); | |
94 | case FCK_MODIFIES: | |
95 | return modifiesClause_unparse (p->val.modifies); | |
96 | case FCK_WARN: | |
97 | return warnClause_unparse (p->val.warn); | |
98 | case FCK_STATE: | |
99 | return stateClause_unparse (p->val.state); | |
d9a28762 | 100 | case FCK_ENSURES: |
3814599d | 101 | return message ("ensures %q", functionConstraint_unparse (p->val.constraint)); |
d9a28762 | 102 | case FCK_REQUIRES: |
3814599d | 103 | return message ("requires %q", functionConstraint_unparse (p->val.constraint)); |
28bf4b0b | 104 | case FCK_DEAD: |
105 | BADBRANCH; | |
106 | } | |
107 | ||
108 | BADBRANCH; | |
109 | } | |
110 | ||
111 | extern bool functionClause_matchKind (functionClause p, functionClauseKind kind) /*@*/ | |
112 | { | |
113 | if (functionClause_isDefined (p)) | |
114 | { | |
115 | return (p->kind == kind); | |
116 | } | |
117 | else | |
118 | { | |
119 | return FALSE; | |
120 | } | |
121 | } | |
122 | ||
123 | extern stateClause functionClause_getState (functionClause node) | |
124 | { | |
125 | llassert (functionClause_isDefined (node)); | |
126 | llassert (node->kind == FCK_STATE); | |
127 | ||
128 | return node->val.state; | |
129 | } | |
130 | ||
131 | extern stateClause functionClause_takeState (functionClause fc) | |
132 | { | |
133 | stateClause res; | |
134 | llassert (functionClause_isDefined (fc)); | |
135 | llassert (fc->kind == FCK_STATE); | |
136 | ||
137 | res = fc->val.state; | |
138 | fc->val.state = NULL; | |
139 | fc->kind = FCK_DEAD; | |
140 | return res; | |
141 | } | |
142 | ||
3814599d | 143 | extern functionConstraint functionClause_getEnsures (functionClause node) |
d9a28762 | 144 | { |
145 | llassert (functionClause_isDefined (node)); | |
146 | llassert (node->kind == FCK_ENSURES); | |
147 | ||
3814599d | 148 | return node->val.constraint; |
d9a28762 | 149 | } |
150 | ||
3814599d | 151 | extern functionConstraint functionClause_takeEnsures (functionClause fc) |
d9a28762 | 152 | { |
3814599d | 153 | functionConstraint res; |
d9a28762 | 154 | llassert (functionClause_isDefined (fc)); |
155 | llassert (fc->kind == FCK_ENSURES); | |
156 | ||
3814599d | 157 | res = fc->val.constraint; |
158 | fc->val.constraint = NULL; | |
d9a28762 | 159 | fc->kind = FCK_DEAD; |
160 | return res; | |
161 | } | |
162 | ||
3814599d | 163 | extern functionConstraint functionClause_getRequires (functionClause node) |
d9a28762 | 164 | { |
165 | llassert (functionClause_isDefined (node)); | |
166 | llassert (node->kind == FCK_REQUIRES); | |
167 | ||
3814599d | 168 | return node->val.constraint; |
d9a28762 | 169 | } |
170 | ||
3814599d | 171 | extern functionConstraint functionClause_takeRequires (functionClause fc) |
d9a28762 | 172 | { |
3814599d | 173 | functionConstraint res; |
d9a28762 | 174 | llassert (functionClause_isDefined (fc)); |
175 | llassert (fc->kind == FCK_REQUIRES); | |
176 | ||
3814599d | 177 | res = fc->val.constraint; |
178 | fc->val.constraint = NULL; | |
08eb3d0e | 179 | fc->kind = FCK_DEAD; |
180 | return res; | |
181 | } | |
182 | ||
28bf4b0b | 183 | extern warnClause functionClause_getWarn (functionClause node) |
184 | { | |
185 | llassert (functionClause_isDefined (node)); | |
186 | llassert (node->kind == FCK_WARN); | |
187 | ||
188 | return node->val.warn; | |
189 | } | |
190 | ||
191 | extern warnClause functionClause_takeWarn (functionClause fc) | |
192 | { | |
193 | warnClause res; | |
194 | llassert (functionClause_isDefined (fc)); | |
195 | llassert (fc->kind == FCK_WARN); | |
196 | ||
197 | res = fc->val.warn; | |
198 | fc->val.warn = warnClause_undefined; | |
199 | fc->kind = FCK_DEAD; | |
200 | return res; | |
201 | } | |
202 | ||
203 | extern modifiesClause functionClause_getModifies (functionClause node) | |
204 | { | |
205 | llassert (functionClause_isDefined (node)); | |
206 | llassert (node->kind == FCK_MODIFIES); | |
207 | ||
208 | return node->val.modifies; | |
209 | } | |
210 | ||
211 | extern globalsClause functionClause_getGlobals (functionClause node) | |
212 | { | |
213 | llassert (functionClause_isDefined (node)); | |
214 | llassert (node->kind == FCK_GLOBALS); | |
215 | ||
216 | return node->val.globals; | |
217 | } | |
218 | ||
219 | extern void functionClause_free (/*@only@*/ functionClause node) | |
220 | { | |
221 | if (node != NULL) | |
222 | { | |
223 | switch (node->kind) | |
224 | { | |
225 | case FCK_GLOBALS: | |
226 | globalsClause_free (node->val.globals); | |
227 | break; | |
228 | case FCK_MODIFIES: | |
229 | modifiesClause_free (node->val.modifies); | |
230 | break; | |
231 | case FCK_WARN: | |
232 | warnClause_free (node->val.warn); | |
233 | break; | |
234 | case FCK_STATE: | |
235 | stateClause_free (node->val.state); | |
236 | break; | |
d9a28762 | 237 | case FCK_ENSURES: |
3814599d | 238 | functionConstraint_free (node->val.constraint); |
d9a28762 | 239 | break; |
240 | case FCK_REQUIRES: | |
3814599d | 241 | functionConstraint_free (node->val.constraint); |
08eb3d0e | 242 | break; |
28bf4b0b | 243 | case FCK_DEAD: |
244 | /* Nothing to release */ | |
245 | break; | |
246 | } | |
247 | ||
248 | sfree (node); | |
249 | } | |
250 | } |