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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 University of Virginia, |
616915dd | 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 |
616915dd | 23 | */ |
24 | /* | |
25 | ** clause.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
616915dd | 29 | # include "basic.h" |
30 | ||
31 | cstring | |
32 | clause_unparse (clause cl) | |
33 | { | |
34 | switch (cl) | |
35 | { | |
36 | case TRUECLAUSE: return (cstring_makeLiteralTemp ("true")); | |
37 | case FALSECLAUSE: return (cstring_makeLiteralTemp ("false")); | |
38 | case ANDCLAUSE: return (cstring_makeLiteralTemp ("and")); | |
39 | case ORCLAUSE: return (cstring_makeLiteralTemp ("or")); | |
40 | case DOWHILECLAUSE: return (cstring_makeLiteralTemp ("do ... while")); | |
41 | case WHILECLAUSE: return (cstring_makeLiteralTemp ("while")); | |
42 | case ITERCLAUSE: return (cstring_makeLiteralTemp ("iter")); | |
43 | case FORCLAUSE: return (cstring_makeLiteralTemp ("for")); | |
44 | case CASECLAUSE: return (cstring_makeLiteralTemp ("case")); | |
45 | case NOCLAUSE: return (cstring_makeLiteralTemp ("none")); | |
46 | case SWITCHCLAUSE: return (cstring_makeLiteralTemp ("switch")); | |
47 | case CONDCLAUSE: return (cstring_makeLiteralTemp ("cond")); | |
48 | case TRUEEXITCLAUSE: return (cstring_makeLiteralTemp ("trueexit")); | |
49 | case FALSEEXITCLAUSE: return (cstring_makeLiteralTemp ("falseexit")); | |
50 | } | |
51 | ||
52 | BADEXIT; | |
53 | } | |
54 | ||
55 | cstring | |
56 | clause_nameTaken (clause cl) | |
57 | { | |
58 | switch (cl) | |
59 | { | |
60 | case TRUECLAUSE: return (cstring_makeLiteralTemp ("in true branch")); | |
61 | case FALSECLAUSE: return (cstring_makeLiteralTemp ("in true branch")); | |
62 | case ANDCLAUSE: return (cstring_makeLiteralTemp ("in first and clause")); | |
63 | case ORCLAUSE: return (cstring_makeLiteralTemp ("in first or clause")); | |
64 | case DOWHILECLAUSE: return (cstring_makeLiteralTemp ("in do ... while body")); | |
65 | case WHILECLAUSE: return (cstring_makeLiteralTemp ("in while body")); | |
66 | case ITERCLAUSE: return (cstring_makeLiteralTemp ("in iter body")); | |
67 | case FORCLAUSE: return (cstring_makeLiteralTemp ("in for body")); | |
68 | case CASECLAUSE: return (cstring_makeLiteralTemp ("in one case")); | |
69 | case NOCLAUSE: return (cstring_makeLiteralTemp ("in some clause")); | |
70 | case SWITCHCLAUSE: return (cstring_makeLiteralTemp ("in one possible execution")); | |
71 | case CONDCLAUSE: return (cstring_makeLiteralTemp ("in true condition")); | |
72 | case TRUEEXITCLAUSE: return (cstring_makeLiteralTemp ("in trueexit")); | |
73 | case FALSEEXITCLAUSE: return (cstring_makeLiteralTemp ("in falseexit")); | |
74 | } | |
75 | ||
8250fa4a | 76 | BADBRANCHRET (cstring_undefined); |
616915dd | 77 | } |
78 | ||
79 | cstring | |
80 | clause_nameAlternate (clause cl) | |
81 | { | |
82 | switch (cl) | |
83 | { | |
84 | case TRUECLAUSE: return (cstring_makeLiteralTemp ("in continuation")); | |
85 | case FALSECLAUSE: return (cstring_makeLiteralTemp ("in false branch")); | |
86 | case ANDCLAUSE: return (cstring_makeLiteralTemp ("in second and clause")); | |
87 | case ORCLAUSE: return (cstring_makeLiteralTemp ("in second or clause")); | |
88 | case DOWHILECLAUSE: return (cstring_makeLiteralTemp ("if loop is not taken")); | |
89 | case WHILECLAUSE: return (cstring_makeLiteralTemp ("if loop is not taken")); | |
90 | case ITERCLAUSE: return (cstring_makeLiteralTemp ("if iter body does not execute")); | |
91 | case FORCLAUSE: return (cstring_makeLiteralTemp ("if for loop body does not execute")); | |
92 | case CASECLAUSE: return (cstring_makeLiteralTemp ("in other case")); | |
93 | case NOCLAUSE: | |
94 | case SWITCHCLAUSE: return (cstring_makeLiteralTemp ("in other possible execution")); | |
95 | case CONDCLAUSE: return (cstring_makeLiteralTemp ("in false condition")); | |
96 | case TRUEEXITCLAUSE: return (cstring_makeLiteralTemp ("in trueexit")); | |
97 | case FALSEEXITCLAUSE: return (cstring_makeLiteralTemp ("in falseexit")); | |
98 | } | |
99 | ||
8250fa4a | 100 | BADBRANCHRET (cstring_undefined); |
616915dd | 101 | } |
102 | ||
103 | cstring clause_nameFlip (clause cl, bool flip) | |
104 | { | |
105 | if (flip) | |
106 | { | |
107 | return clause_nameAlternate (cl); | |
108 | } | |
109 | else | |
110 | { | |
111 | return clause_nameTaken (cl); | |
112 | } | |
113 | } | |
114 | ||
115 | bool clause_isBreakable (clause cl) | |
116 | { | |
117 | return (cl == SWITCHCLAUSE | |
118 | || cl == WHILECLAUSE | |
119 | || cl == DOWHILECLAUSE | |
120 | || cl == FORCLAUSE | |
121 | || cl == ITERCLAUSE); | |
122 | } | |
123 | ||
124 | bool clause_isLoop (clause cl) | |
125 | { | |
126 | return (cl == WHILECLAUSE | |
127 | || cl == FORCLAUSE | |
128 | || cl == ITERCLAUSE | |
129 | || cl == DOWHILECLAUSE); | |
130 | } | |
131 | ||
132 | bool clause_isConditional (clause cl) | |
133 | { | |
134 | return ( cl == TRUECLAUSE | |
135 | || cl == FALSECLAUSE | |
136 | || cl == WHILECLAUSE | |
137 | || cl == FORCLAUSE | |
138 | || cl == SWITCHCLAUSE | |
139 | || cl == ITERCLAUSE); | |
140 | } | |
141 | ||
142 | bool clause_isSwitch (clause cl) | |
143 | { | |
144 | return (cl == SWITCHCLAUSE); | |
145 | } | |
146 | ||
147 | bool clause_isCase (clause cl) | |
148 | { | |
149 | return (cl == CASECLAUSE); | |
150 | } | |
151 | ||
152 | bool clause_isNone (clause cl) | |
153 | { | |
154 | return (cl == NOCLAUSE); | |
155 | } |