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1 | /* | |
2 | ** Splint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2002 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://www.splint.org | |
23 | */ | |
24 | /* | |
25 | ** qual.c | |
26 | ** | |
27 | ** representation of type qualifiers | |
28 | */ | |
29 | ||
30 | # include "lclintMacros.nf" | |
31 | # include "basic.h" | |
32 | ||
33 | static qual qual_createPlainAux (int i) | |
34 | { | |
35 | qual res = (qual) dmalloc (sizeof (*res)); | |
36 | res->kind = (quenum) i; | |
37 | res->info = annotationInfo_undefined; | |
38 | ||
39 | sfreeEventually (res); /* stored in qtable */ | |
40 | return res; | |
41 | } | |
42 | ||
43 | extern qual qual_createPlain (quenum q) | |
44 | { | |
45 | static bool isinit = FALSE; | |
46 | static qual qtable[QU_LAST]; | |
47 | ||
48 | if (!isinit) { | |
49 | int i = (int) QU_UNKNOWN; | |
50 | ||
51 | while (i < (int) QU_LAST) { | |
52 | qtable[i] = qual_createPlainAux (i); | |
53 | i++; | |
54 | } | |
55 | ||
56 | isinit = TRUE; | |
57 | } | |
58 | ||
59 | llassert (q != QU_USERANNOT && q < QU_LAST); | |
60 | return qtable[(int) q]; | |
61 | } | |
62 | ||
63 | extern qual qual_createMetaState (annotationInfo info) | |
64 | { | |
65 | qual res; | |
66 | ||
67 | res = (qual) dmalloc (sizeof (*res)); | |
68 | res->kind = QU_USERANNOT; | |
69 | res->info = info; | |
70 | ||
71 | sfreeEventually (res); /* Memory leak */ | |
72 | return res; | |
73 | } | |
74 | ||
75 | static bool quenum_isValid (int q) | |
76 | { | |
77 | return ((quenum) q >= QU_UNKNOWN | |
78 | && ((quenum) q < QU_LAST)); | |
79 | } | |
80 | ||
81 | qual qual_fromInt (int q) | |
82 | { | |
83 | llassertprint (quenum_isValid (q), ("Invalid qual: %d", q)); | |
84 | return (qual_createPlain ((quenum) q)); | |
85 | } | |
86 | ||
87 | cstring qual_unparse (qual q) | |
88 | { | |
89 | if (q->kind == QU_USERANNOT) { | |
90 | return (annotationInfo_unparse (q->info)); | |
91 | } else { | |
92 | switch (q->kind) | |
93 | { | |
94 | case QU_UNKNOWN: return cstring_makeLiteralTemp ("unknown"); | |
95 | case QU_ABSTRACT: return cstring_makeLiteralTemp ("abstract"); | |
96 | case QU_CONCRETE: return cstring_makeLiteralTemp ("concrete"); | |
97 | case QU_MUTABLE: return cstring_makeLiteralTemp ("mutable"); | |
98 | case QU_IMMUTABLE: return cstring_makeLiteralTemp ("immutable"); | |
99 | case QU_SHORT: return cstring_makeLiteralTemp ("short"); | |
100 | case QU_LONG: return cstring_makeLiteralTemp ("long"); | |
101 | case QU_SIGNED: return cstring_makeLiteralTemp ("signed"); | |
102 | case QU_UNSIGNED: return cstring_makeLiteralTemp ("unsigned"); | |
103 | case QU_CONST: return cstring_makeLiteralTemp ("const"); | |
104 | case QU_VOLATILE: return cstring_makeLiteralTemp ("volatile"); | |
105 | case QU_INLINE: return cstring_makeLiteralTemp ("inline"); | |
106 | case QU_EXTERN: return cstring_makeLiteralTemp ("extern"); | |
107 | case QU_STATIC: return cstring_makeLiteralTemp ("static"); | |
108 | case QU_AUTO: return cstring_makeLiteralTemp ("auto"); | |
109 | case QU_REGISTER: return cstring_makeLiteralTemp ("register"); | |
110 | case QU_OUT: return cstring_makeLiteralTemp ("out"); | |
111 | case QU_IN: return cstring_makeLiteralTemp ("in"); | |
112 | case QU_RELDEF: return cstring_makeLiteralTemp ("reldef"); | |
113 | case QU_ONLY: return cstring_makeLiteralTemp ("only"); | |
114 | case QU_IMPONLY: return cstring_makeLiteralTemp ("only"); | |
115 | case QU_PARTIAL: return cstring_makeLiteralTemp ("partial"); | |
116 | case QU_SPECIAL: return cstring_makeLiteralTemp ("special"); | |
117 | case QU_KEEP: return cstring_makeLiteralTemp ("keep"); | |
118 | case QU_KEPT: return cstring_makeLiteralTemp ("kept"); | |
119 | case QU_YIELD: return cstring_makeLiteralTemp ("yield"); | |
120 | case QU_TEMP: return cstring_makeLiteralTemp ("temp"); | |
121 | case QU_SHARED: return cstring_makeLiteralTemp ("shared"); | |
122 | case QU_UNIQUE: return cstring_makeLiteralTemp ("unique"); | |
123 | case QU_UNCHECKED: return cstring_makeLiteralTemp ("unchecked"); | |
124 | case QU_CHECKED: return cstring_makeLiteralTemp ("checked"); | |
125 | case QU_CHECKMOD: return cstring_makeLiteralTemp ("checkmod"); | |
126 | case QU_CHECKEDSTRICT: return cstring_makeLiteralTemp ("checkedstrict"); | |
127 | case QU_TRUENULL: return cstring_makeLiteralTemp ("truenull"); | |
128 | case QU_FALSENULL: return cstring_makeLiteralTemp ("falsenull"); | |
129 | case QU_NULL: return cstring_makeLiteralTemp ("null"); | |
130 | case QU_ISNULL: return cstring_makeLiteralTemp ("isnull"); | |
131 | case QU_RELNULL: return cstring_makeLiteralTemp ("relnull"); | |
132 | case QU_NOTNULL: return cstring_makeLiteralTemp ("notnull"); | |
133 | case QU_NULLTERMINATED: return cstring_makeLiteralTemp ("nullterminated"); | |
134 | case QU_RETURNED: return cstring_makeLiteralTemp (" returned"); | |
135 | case QU_EXPOSED: return cstring_makeLiteralTemp ("exposed"); | |
136 | case QU_EXITS: return cstring_makeLiteralTemp ("exits"); | |
137 | case QU_MAYEXIT: return cstring_makeLiteralTemp ("mayexit"); | |
138 | case QU_UNUSED: return cstring_makeLiteralTemp ("unused"); | |
139 | case QU_EXTERNAL: return cstring_makeLiteralTemp ("external"); | |
140 | case QU_SEF: return cstring_makeLiteralTemp ("sef"); | |
141 | case QU_OBSERVER: return cstring_makeLiteralTemp ("observer"); | |
142 | case QU_REFCOUNTED: return cstring_makeLiteralTemp ("refcounted"); | |
143 | case QU_REFS: return cstring_makeLiteralTemp ("refs"); | |
144 | case QU_NEWREF: return cstring_makeLiteralTemp ("newref"); | |
145 | case QU_KILLREF: return cstring_makeLiteralTemp ("killref"); | |
146 | case QU_TEMPREF: return cstring_makeLiteralTemp ("tempref"); | |
147 | case QU_OWNED: return cstring_makeLiteralTemp ("owned"); | |
148 | case QU_DEPENDENT: return cstring_makeLiteralTemp ("dependent"); | |
149 | case QU_NEVEREXIT: return cstring_makeLiteralTemp ("neverexit"); | |
150 | case QU_TRUEEXIT: return cstring_makeLiteralTemp ("trueexit"); | |
151 | case QU_FALSEEXIT: return cstring_makeLiteralTemp ("falseexit"); | |
152 | case QU_UNDEF: return cstring_makeLiteralTemp ("undef"); | |
153 | case QU_KILLED: return cstring_makeLiteralTemp ("killed"); | |
154 | case QU_PRINTFLIKE: return cstring_makeLiteralTemp ("printflike"); | |
155 | case QU_SCANFLIKE: return cstring_makeLiteralTemp ("scanflike"); | |
156 | case QU_MESSAGELIKE:return cstring_makeLiteralTemp ("messagelike"); | |
157 | case QU_SETBUFFERSIZE: return cstring_makeLiteralTemp("<qsetbuffersize>"); | |
158 | case QU_LAST: return cstring_makeLiteralTemp ("< last >"); | |
159 | case QU_USERANNOT: return cstring_makeLiteralTemp ("<user>"); | |
160 | } | |
161 | } | |
162 | ||
163 | BADEXIT; | |
164 | } | |
165 | ||
166 | extern bool qual_match (qual q1, qual q2) | |
167 | { | |
168 | if (q1->kind == q2->kind) { | |
169 | if (q1->kind == QU_USERANNOT) { | |
170 | return (annotationInfo_equal (q1->info, q2->info)); | |
171 | } else { | |
172 | return TRUE; | |
173 | } | |
174 | } | |
175 | ||
176 | return FALSE; | |
177 | } | |
178 | ||
179 | extern annotationInfo qual_getAnnotationInfo (qual q) | |
180 | { | |
181 | llassert (qual_isMetaState (q)); | |
182 | return q->info; | |
183 | } | |
184 | ||
185 | /* Cannot call qual_create after this... */ | |
186 | ||
187 | # if 0 | |
188 | static void qual_free (qual q) | |
189 | { | |
190 | llassert (FALSE); | |
191 | sfree (q); | |
192 | } | |
193 | # endif | |
194 | ||
195 | extern cstring qual_dump (qual q) | |
196 | { | |
197 | if (q->kind == QU_USERANNOT) | |
198 | { | |
199 | return message ("%d.%s", | |
200 | (int) q->kind, | |
201 | annotationInfo_dump (q->info)); | |
202 | } | |
203 | else | |
204 | { | |
205 | return message ("%d", (int) q->kind); | |
206 | } | |
207 | } | |
208 | ||
209 | ||
210 | extern qual qual_undump (char **s) | |
211 | { | |
212 | quenum q = (quenum) reader_getInt (s); | |
213 | ||
214 | if (q == QU_USERANNOT) | |
215 | { | |
216 | annotationInfo ai; | |
217 | ||
218 | reader_checkChar (s, '.'); | |
219 | ai = annotationInfo_undump (s); | |
220 | ||
221 | return qual_createMetaState (ai); | |
222 | } | |
223 | else | |
224 | { | |
225 | return qual_createPlain (q); | |
226 | } | |
227 | } | |
228 | ||
229 |