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28bf4b0b | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 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 | ||
1b8ae690 | 25 | # include "splintMacros.nf" |
28bf4b0b | 26 | # include "basic.h" |
27 | ||
28 | void stateInfo_free (/*@only@*/ stateInfo a) | |
29 | { | |
30 | if (a != NULL) | |
31 | { | |
32 | fileloc_free (a->loc); | |
33 | sfree (a); | |
34 | } | |
35 | } | |
36 | ||
37 | /*@only@*/ stateInfo stateInfo_update (/*@only@*/ stateInfo old, stateInfo newinfo) | |
38 | /* | |
39 | ** returns an stateInfo with the same value as new. May reuse the | |
40 | ** storage of old. (i.e., same effect as copy, but more | |
41 | ** efficient.) | |
42 | */ | |
43 | { | |
44 | if (old == NULL) | |
45 | { | |
6fcd0b1e | 46 | return stateInfo_copy (newinfo); |
28bf4b0b | 47 | } |
48 | else if (newinfo == NULL) | |
49 | { | |
50 | stateInfo_free (old); | |
51 | return NULL; | |
52 | } | |
53 | else | |
54 | { | |
6fcd0b1e | 55 | stateInfo snew = stateInfo_makeRefLoc (newinfo->ref, newinfo->loc); |
c3be2604 | 56 | llassert (snew->previous == NULL); |
6fcd0b1e | 57 | snew->previous = old; |
58 | return snew; | |
28bf4b0b | 59 | } |
28bf4b0b | 60 | } |
61 | ||
62 | /*@only@*/ stateInfo stateInfo_updateLoc (/*@only@*/ stateInfo old, fileloc loc) | |
63 | { | |
64 | if (old == NULL) | |
65 | { | |
66 | old = stateInfo_makeLoc (loc); | |
67 | } | |
68 | else | |
69 | { | |
70 | old->loc = fileloc_update (old->loc, loc); | |
28bf4b0b | 71 | old->ref = sRef_undefined; |
72 | } | |
73 | ||
74 | return old; | |
75 | } | |
76 | ||
77 | /*@only@*/ stateInfo | |
78 | stateInfo_updateRefLoc (/*@only@*/ stateInfo old, /*@exposed@*/ sRef ref, fileloc loc) | |
79 | { | |
80 | if (old == NULL) | |
81 | { | |
82 | old = stateInfo_makeRefLoc (ref, loc); | |
83 | } | |
84 | else | |
85 | { | |
86 | old->loc = fileloc_update (old->loc, loc); | |
28bf4b0b | 87 | old->ref = ref; |
88 | } | |
89 | ||
90 | return old; | |
91 | } | |
92 | ||
93 | /*@only@*/ stateInfo stateInfo_copy (stateInfo a) | |
94 | { | |
95 | if (a == NULL) | |
96 | { | |
97 | return NULL; | |
98 | } | |
99 | else | |
100 | { | |
101 | stateInfo ret = (stateInfo) dmalloc (sizeof (*ret)); | |
102 | ||
103 | ret->loc = fileloc_copy (a->loc); /*< should report bug without copy! >*/ | |
28bf4b0b | 104 | ret->ref = a->ref; |
6fcd0b1e | 105 | ret->previous = stateInfo_copy (a->previous); |
28bf4b0b | 106 | |
107 | return ret; | |
108 | } | |
109 | } | |
110 | ||
6970c11b | 111 | /*@only@*/ /*@notnull@*/ stateInfo |
112 | stateInfo_currentLoc (void) | |
113 | { | |
114 | return stateInfo_makeLoc (g_currentloc); | |
115 | } | |
116 | ||
28bf4b0b | 117 | /*@only@*/ /*@notnull@*/ stateInfo |
118 | stateInfo_makeLoc (fileloc loc) | |
119 | { | |
120 | stateInfo ret = (stateInfo) dmalloc (sizeof (*ret)); | |
121 | ||
122 | ret->loc = fileloc_copy (loc); /* don't need to copy! */ | |
28bf4b0b | 123 | ret->ref = sRef_undefined; |
6fcd0b1e | 124 | ret->previous = stateInfo_undefined; |
125 | ||
28bf4b0b | 126 | return ret; |
127 | } | |
128 | ||
2f2892c2 | 129 | /*@only@*/ /*@notnull@*/ stateInfo |
28bf4b0b | 130 | stateInfo_makeRefLoc (/*@exposed@*/ sRef ref, fileloc loc) |
6fcd0b1e | 131 | /*@post:isnull result->previous@*/ |
28bf4b0b | 132 | { |
133 | stateInfo ret = (stateInfo) dmalloc (sizeof (*ret)); | |
134 | ||
135 | ret->loc = fileloc_copy (loc); | |
136 | ret->ref = ref; | |
6fcd0b1e | 137 | ret->previous = stateInfo_undefined; |
138 | ||
28bf4b0b | 139 | return ret; |
140 | } | |
141 | ||
142 | /*@only@*/ cstring | |
143 | stateInfo_unparse (stateInfo s) | |
144 | { | |
6fcd0b1e | 145 | if (stateInfo_isDefined (s) && fileloc_isDefined (s->loc)) |
146 | { | |
147 | if (stateInfo_isDefined (s->previous)) { | |
148 | return message ("%q; %q", fileloc_unparse (s->loc), stateInfo_unparse (s->previous)); | |
149 | } else { | |
150 | return fileloc_unparse (s->loc); | |
151 | } | |
152 | } | |
153 | else | |
154 | { | |
28bf4b0b | 155 | return cstring_makeLiteral ("<no info>"); |
6fcd0b1e | 156 | } |
28bf4b0b | 157 | } |
158 | ||
159 | fileloc stateInfo_getLoc (stateInfo info) | |
160 | { | |
6fcd0b1e | 161 | if (stateInfo_isDefined (info)) |
162 | { | |
28bf4b0b | 163 | return info->loc; |
6fcd0b1e | 164 | } |
165 | ||
166 | return fileloc_undefined; | |
167 | } | |
168 | ||
169 | void stateInfo_display (stateInfo s, cstring sname) | |
170 | { | |
171 | while (stateInfo_isDefined (s)) | |
172 | { | |
173 | cstring msg = message ("Storage %s ", sname); | |
174 | ||
175 | if (sRef_isValid (s->ref)) { | |
176 | msg = message ("%q through alias %q ", msg, sRef_unparse (s->ref)); | |
177 | } | |
178 | ||
179 | msg = message ("%qreleased", msg); /* For now, just used for release...need to make this work. */ | |
180 | llgenindentmsg (msg, s->loc); | |
181 | s = s->previous; | |
28bf4b0b | 182 | } |
183 | ||
6fcd0b1e | 184 | cstring_free (sname); |
28bf4b0b | 185 | } |
186 | ||
6fcd0b1e | 187 |