]>
Commit | Line | Data |
---|---|---|
28bf4b0b | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
28bf4b0b | 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 |
28bf4b0b | 23 | */ |
24 | /* | |
25 | ** functionClause.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
28bf4b0b | 29 | # include "basic.h" |
30 | ||
31 | static /*@only@*/ /*@notnull@*/ /*@special@*/ functionClause /*@i32 need special? @*/ | |
32 | functionClause_alloc (functionClauseKind kind) /*@defines result->kind@*/ | |
33 | { | |
34 | functionClause res = (functionClause) dmalloc (sizeof (*res)); | |
35 | ||
36 | res->kind = kind; | |
37 | return res; | |
38 | } | |
39 | ||
40 | extern functionClause functionClause_createGlobals (globalsClause node) /*@*/ | |
41 | { | |
42 | functionClause res = functionClause_alloc (FCK_GLOBALS); | |
43 | res->val.globals = node; | |
44 | return res; | |
45 | } | |
46 | ||
47 | extern functionClause functionClause_createModifies (modifiesClause node) /*@*/ | |
48 | { | |
49 | functionClause res = functionClause_alloc (FCK_MODIFIES); | |
50 | res->val.modifies = node; | |
51 | return res; | |
52 | } | |
53 | ||
54 | extern functionClause functionClause_createState (stateClause node) /*@*/ | |
a07995d9 | 55 | { |
56 | if (stateClause_hasEmptyReferences (node) && | |
57 | (!stateClause_isMetaState (node) ) ) | |
58 | { | |
59 | DPRINTF((message("functionClause_createState:: Returning functionClause_undefined" ) )); | |
60 | return functionClause_undefined; | |
61 | } | |
62 | else | |
63 | { | |
64 | functionClause res = functionClause_alloc (FCK_STATE); | |
65 | res->val.state = node; | |
66 | return res; | |
67 | } | |
28bf4b0b | 68 | } |
69 | ||
3814599d | 70 | extern functionClause functionClause_createEnsures (functionConstraint node) /*@*/ |
d9a28762 | 71 | { |
72 | functionClause res = functionClause_alloc (FCK_ENSURES); | |
3814599d | 73 | res->val.constraint = node; |
d9a28762 | 74 | return res; |
75 | } | |
76 | ||
3814599d | 77 | extern functionClause functionClause_createRequires (functionConstraint node) /*@*/ |
d9a28762 | 78 | { |
79 | functionClause res = functionClause_alloc (FCK_REQUIRES); | |
3814599d | 80 | res->val.constraint = node; |
08eb3d0e | 81 | return res; |
82 | } | |
83 | ||
28bf4b0b | 84 | extern functionClause functionClause_createWarn (warnClause node) /*@*/ |
85 | { | |
86 | functionClause res = functionClause_alloc (FCK_WARN); | |
87 | res->val.warn = node; | |
88 | return res; | |
89 | } | |
90 | ||
91 | /*@only@*/ cstring functionClause_unparse (functionClause p) | |
92 | { | |
93 | if (functionClause_isUndefined (p)) | |
94 | { | |
95 | return cstring_undefined; | |
96 | } | |
97 | ||
98 | switch (p->kind) | |
99 | { | |
100 | case FCK_GLOBALS: | |
101 | return globalsClause_unparse (p->val.globals); | |
102 | case FCK_MODIFIES: | |
103 | return modifiesClause_unparse (p->val.modifies); | |
104 | case FCK_WARN: | |
105 | return warnClause_unparse (p->val.warn); | |
106 | case FCK_STATE: | |
107 | return stateClause_unparse (p->val.state); | |
d9a28762 | 108 | case FCK_ENSURES: |
3814599d | 109 | return message ("ensures %q", functionConstraint_unparse (p->val.constraint)); |
d9a28762 | 110 | case FCK_REQUIRES: |
3814599d | 111 | return message ("requires %q", functionConstraint_unparse (p->val.constraint)); |
28bf4b0b | 112 | case FCK_DEAD: |
bb7c2085 | 113 | return cstring_makeLiteral ("<dead clause>"); |
28bf4b0b | 114 | } |
115 | ||
8250fa4a | 116 | BADBRANCHRET (cstring_undefined); |
28bf4b0b | 117 | } |
118 | ||
119 | extern bool functionClause_matchKind (functionClause p, functionClauseKind kind) /*@*/ | |
120 | { | |
121 | if (functionClause_isDefined (p)) | |
122 | { | |
123 | return (p->kind == kind); | |
124 | } | |
125 | else | |
126 | { | |
127 | return FALSE; | |
128 | } | |
129 | } | |
130 | ||
131 | extern stateClause functionClause_getState (functionClause node) | |
132 | { | |
133 | llassert (functionClause_isDefined (node)); | |
134 | llassert (node->kind == FCK_STATE); | |
135 | ||
136 | return node->val.state; | |
137 | } | |
138 | ||
139 | extern stateClause functionClause_takeState (functionClause fc) | |
140 | { | |
141 | stateClause res; | |
142 | llassert (functionClause_isDefined (fc)); | |
143 | llassert (fc->kind == FCK_STATE); | |
144 | ||
145 | res = fc->val.state; | |
146 | fc->val.state = NULL; | |
147 | fc->kind = FCK_DEAD; | |
148 | return res; | |
149 | } | |
150 | ||
3814599d | 151 | extern functionConstraint functionClause_getEnsures (functionClause node) |
d9a28762 | 152 | { |
153 | llassert (functionClause_isDefined (node)); | |
154 | llassert (node->kind == FCK_ENSURES); | |
155 | ||
3814599d | 156 | return node->val.constraint; |
d9a28762 | 157 | } |
158 | ||
3814599d | 159 | extern functionConstraint functionClause_takeEnsures (functionClause fc) |
d9a28762 | 160 | { |
3814599d | 161 | functionConstraint res; |
d9a28762 | 162 | llassert (functionClause_isDefined (fc)); |
163 | llassert (fc->kind == FCK_ENSURES); | |
164 | ||
3814599d | 165 | res = fc->val.constraint; |
166 | fc->val.constraint = NULL; | |
d9a28762 | 167 | fc->kind = FCK_DEAD; |
168 | return res; | |
169 | } | |
170 | ||
3814599d | 171 | extern functionConstraint functionClause_getRequires (functionClause node) |
d9a28762 | 172 | { |
173 | llassert (functionClause_isDefined (node)); | |
174 | llassert (node->kind == FCK_REQUIRES); | |
175 | ||
3814599d | 176 | return node->val.constraint; |
d9a28762 | 177 | } |
178 | ||
3814599d | 179 | extern functionConstraint functionClause_takeRequires (functionClause fc) |
d9a28762 | 180 | { |
3814599d | 181 | functionConstraint res; |
d9a28762 | 182 | llassert (functionClause_isDefined (fc)); |
183 | llassert (fc->kind == FCK_REQUIRES); | |
184 | ||
3814599d | 185 | res = fc->val.constraint; |
186 | fc->val.constraint = NULL; | |
08eb3d0e | 187 | fc->kind = FCK_DEAD; |
188 | return res; | |
189 | } | |
190 | ||
28bf4b0b | 191 | extern warnClause functionClause_getWarn (functionClause node) |
192 | { | |
193 | llassert (functionClause_isDefined (node)); | |
194 | llassert (node->kind == FCK_WARN); | |
195 | ||
196 | return node->val.warn; | |
197 | } | |
198 | ||
199 | extern warnClause functionClause_takeWarn (functionClause fc) | |
200 | { | |
201 | warnClause res; | |
202 | llassert (functionClause_isDefined (fc)); | |
203 | llassert (fc->kind == FCK_WARN); | |
204 | ||
205 | res = fc->val.warn; | |
206 | fc->val.warn = warnClause_undefined; | |
207 | fc->kind = FCK_DEAD; | |
208 | return res; | |
209 | } | |
210 | ||
211 | extern modifiesClause functionClause_getModifies (functionClause node) | |
212 | { | |
213 | llassert (functionClause_isDefined (node)); | |
214 | llassert (node->kind == FCK_MODIFIES); | |
215 | ||
216 | return node->val.modifies; | |
217 | } | |
218 | ||
219 | extern globalsClause functionClause_getGlobals (functionClause node) | |
220 | { | |
221 | llassert (functionClause_isDefined (node)); | |
222 | llassert (node->kind == FCK_GLOBALS); | |
223 | ||
224 | return node->val.globals; | |
225 | } | |
226 | ||
227 | extern void functionClause_free (/*@only@*/ functionClause node) | |
228 | { | |
229 | if (node != NULL) | |
230 | { | |
bb7c2085 | 231 | DPRINTF (("free: %s", functionClause_unparse (node))); |
232 | ||
28bf4b0b | 233 | switch (node->kind) |
234 | { | |
235 | case FCK_GLOBALS: | |
236 | globalsClause_free (node->val.globals); | |
237 | break; | |
238 | case FCK_MODIFIES: | |
239 | modifiesClause_free (node->val.modifies); | |
240 | break; | |
241 | case FCK_WARN: | |
242 | warnClause_free (node->val.warn); | |
243 | break; | |
244 | case FCK_STATE: | |
245 | stateClause_free (node->val.state); | |
246 | break; | |
d9a28762 | 247 | case FCK_ENSURES: |
3814599d | 248 | functionConstraint_free (node->val.constraint); |
d9a28762 | 249 | break; |
250 | case FCK_REQUIRES: | |
3814599d | 251 | functionConstraint_free (node->val.constraint); |
08eb3d0e | 252 | break; |
28bf4b0b | 253 | case FCK_DEAD: |
254 | /* Nothing to release */ | |
255 | break; | |
256 | } | |
257 | ||
258 | sfree (node); | |
259 | } | |
260 | } |