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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 | ** stateValue.c | |
26 | */ | |
27 | ||
28 | # include "lclintMacros.nf" | |
29 | # include "llbasic.h" | |
30 | ||
31 | extern | |
32 | stateValue stateValue_create (int value, stateInfo info) { | |
33 | stateValue sv = (stateValue) dmalloc (sizeof (*sv)); | |
34 | ||
35 | sv->value = value; | |
36 | sv->info = info; | |
37 | ||
38 | return sv; | |
39 | } | |
40 | ||
41 | stateValue stateValue_copy (stateValue s) { | |
42 | stateValue res; | |
43 | llassert (stateValue_isDefined (s)); | |
44 | res = stateValue_create (s->value, stateInfo_copy (s->info)); | |
45 | return res; | |
46 | } | |
47 | ||
48 | bool stateValue_sameValue (stateValue s1, stateValue s2) | |
49 | { | |
50 | if (stateValue_isDefined (s1) && stateValue_isDefined (s2)) | |
51 | { | |
52 | return s1->value == s2->value; | |
53 | } | |
54 | else | |
55 | { | |
56 | return !stateValue_isDefined (s1) && !stateValue_isDefined (s2); | |
57 | } | |
58 | } | |
59 | ||
60 | extern | |
61 | cstring stateValue_unparse (stateValue s) { | |
62 | if (stateValue_isDefined (s)) | |
63 | { | |
64 | return (message ("%d:%q", s->value, stateInfo_unparse (s->info))); | |
65 | } | |
66 | else | |
67 | { | |
68 | return (cstring_makeLiteral ("<stateValue_undefined>")); | |
69 | } | |
70 | } | |
71 | ||
72 | void stateValue_updateValue (stateValue s, int value, stateInfo info) | |
73 | { | |
74 | llassert (stateValue_isDefined (s)); | |
75 | s->value = value; | |
76 | ||
77 | if (stateInfo_isDefined (info)) { | |
78 | stateInfo_free (s->info); | |
79 | s->info = info; | |
80 | } | |
81 | ||
82 | DPRINTF (("update state value: %s", stateValue_unparse (s))); | |
83 | } | |
84 | ||
85 | void stateValue_updateValueLoc (stateValue s, int value, fileloc loc) | |
86 | { | |
87 | llassert (stateValue_isDefined (s)); | |
88 | ||
89 | DPRINTF (("Update state: %s -> %d at %s", stateValue_unparse (s), value, | |
90 | fileloc_unparse (loc))); | |
91 | ||
92 | s->value = value; | |
93 | ||
94 | if (fileloc_isDefined (loc)) { | |
95 | s->info = stateInfo_updateLoc (s->info, loc); | |
96 | } | |
97 | } | |
98 | ||
99 | void stateValue_update (stateValue res, stateValue val) | |
100 | { | |
101 | llassert (stateValue_isDefined (res)); | |
102 | res->value = val->value; | |
103 | res->info = stateInfo_update (res->info, val->info); | |
104 | DPRINTF (("update state: %s", stateValue_unparse (res))); | |
105 | } | |
106 | ||
107 | void stateValue_show (stateValue s, metaStateInfo msinfo) | |
108 | { | |
109 | if (stateValue_isDefined (s)) | |
110 | { | |
111 | stateInfo info = stateValue_getInfo (s); | |
112 | ||
113 | if (stateInfo_isDefined (info)) | |
114 | { | |
115 | if (fileloc_isDefined (info->loc)) | |
116 | { | |
117 | llgenindentmsg (message | |
118 | ("State becomes %s", | |
119 | metaStateInfo_unparseValue (msinfo, | |
120 | stateValue_getValue (s))), | |
121 | info->loc); | |
122 | } | |
123 | } | |
124 | } | |
125 | } | |
126 | ||
127 | /*@observer@*/ cstring stateValue_unparseValue (stateValue s, metaStateInfo msinfo) | |
128 | { | |
129 | return metaStateInfo_unparseValue (msinfo, | |
130 | stateValue_getValue (s)); | |
131 | } | |
132 | ||
133 | int stateValue_getValue (stateValue s) | |
134 | { | |
135 | llassert (stateValue_isDefined (s)); | |
136 | return s->value; | |
137 | } | |
138 | ||
139 | stateInfo stateValue_getInfo (stateValue s) | |
140 | { | |
141 | llassert (stateValue_isDefined (s)); | |
142 | return s->info; | |
143 | } | |
144 | ||
145 | bool stateValue_hasLoc (stateValue s) | |
146 | { | |
147 | return (fileloc_isDefined (stateValue_getLoc (s))); | |
148 | } |