1
2 /*
3
4 Test to see if a particular fix should be applied to a header file.
5
6 Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
7
8 = = = = = = = = = = = = = = = = = = = = = = = = =
9
10 NOTE TO DEVELOPERS
11
12 The routines you write here must work closely with fixincl.c.
13
14 Here are the rules:
15
16 1. Every test procedure name must be suffixed with "_test".
17 These routines will be referenced from inclhack.def, sans the suffix.
18
19 2. Use the "TEST_FOR_FIX_PROC_HEAD()" macro _with_ the "_test" suffix
20 (I cannot use the ## magic from ANSI C) for defining your entry point.
21
22 3. Put your test name into the FIX_TEST_TABLE
23
24 4. Do not write anything to stdout. It may be closed.
25
26 5. Write to stderr only in the event of a reportable error
27 In such an event, call "exit(1)".
28
29 = = = = = = = = = = = = = = = = = = = = = = = = =
30
31 This file is part of GNU CC.
32
33 GNU CC is free software; you can redistribute it and/or modify
34 it under the terms of the GNU General Public License as published by
35 the Free Software Foundation; either version 2, or (at your option)
36 any later version.
37
38 GNU CC is distributed in the hope that it will be useful,
39 but WITHOUT ANY WARRANTY; without even the implied warranty of
40 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 GNU General Public License for more details.
42
43 You should have received a copy of the GNU General Public License
44 along with GNU CC; see the file COPYING. If not, write to
45 the Free Software Foundation, 59 Temple Place - Suite 330,
46 Boston, MA 02111-1307, USA. */
47
48 #include "fixlib.h"
49
50 #define _ENV_(v,m,n,t) extern tCC* v;
51 ENV_TABLE
52 #undef _ENV_
53
54 typedef apply_fix_p_t t_test_proc PARAMS(( tCC* file, tCC* text ));
55
56 typedef struct {
57 tCC* test_name;
58 t_test_proc* test_proc;
59 } test_entry_t;
60
61 #define FIX_TEST_TABLE \
62 _FT_( "machine_name", machine_name_test ) \
63 _FT_( "stdc_0_in_system_headers", stdc_0_in_system_headers_test )
64
65 #define TEST_FOR_FIX_PROC_HEAD( test ) \
66 static apply_fix_p_t test PARAMS(( tCC* file, tCC* text )); \
67 static apply_fix_p_t test ( fname, text ) \
68 tCC* fname; \
69 tCC* text;
70
71
TEST_FOR_FIX_PROC_HEAD(machine_name_test)72 TEST_FOR_FIX_PROC_HEAD( machine_name_test )
73 {
74 #ifndef MN_NAME_PAT
75 return SKIP_FIX;
76 #else
77 regex_t *label_re, *name_re;
78 regmatch_t match[2];
79 tCC *base, *limit;
80 IGNORE_ARG(fname);
81
82 mn_get_regexps(&label_re, &name_re, "machine_name_test");
83
84 for (base = text;
85 regexec (label_re, base, 2, match, 0) == 0;
86 base = limit)
87 {
88 base += match[0].rm_eo;
89 /* We're looking at an #if or #ifdef. Scan forward for the
90 next non-escaped newline. */
91 limit = base;
92 do
93 {
94 limit++;
95 limit = strchr (limit, '\n');
96 if (!limit)
97 return SKIP_FIX;
98 }
99 while (limit[-1] == '\\');
100
101 /* If the 'name_pat' matches in between base and limit, we have
102 a bogon. It is not worth the hassle of excluding comments,
103 because comments on #if/#ifdef/#ifndef lines are rare,
104 and strings on such lines are illegal.
105
106 REG_NOTBOL means 'base' is not at the beginning of a line, which
107 shouldn't matter since the name_re has no ^ anchor, but let's
108 be accurate anyway. */
109
110 if (regexec (name_re, base, 1, match, REG_NOTBOL))
111 return SKIP_FIX; /* No match in file - no fix needed */
112
113 /* Match; is it on the line? */
114 if (match[0].rm_eo <= limit - base)
115 return APPLY_FIX; /* Yup */
116
117 /* Otherwise, keep looking... */
118 }
119 return SKIP_FIX;
120 #endif
121 }
122
123
TEST_FOR_FIX_PROC_HEAD(stdc_0_in_system_headers_test)124 TEST_FOR_FIX_PROC_HEAD( stdc_0_in_system_headers_test )
125 {
126 #ifdef STDC_0_IN_SYSTEM_HEADERS
127 return (pz_machine == NULL) ? APPLY_FIX : SKIP_FIX;
128 #else
129 return APPLY_FIX;
130 #endif
131 }
132
133
134 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
135
136 test for fix selector
137
138 THIS IS THE ONLY EXPORTED ROUTINE
139
140 */
141 apply_fix_p_t
run_test(tname,fname,text)142 run_test( tname, fname, text )
143 tCC* tname;
144 tCC* fname;
145 tCC* text;
146 {
147 #define _FT_(n,p) { n, p },
148 static test_entry_t test_table[] = { FIX_TEST_TABLE { NULL, NULL }};
149 #undef _FT_
150 #define TEST_TABLE_CT (ARRAY_SIZE (test_table)-1)
151
152 int ct = TEST_TABLE_CT;
153 test_entry_t* pte = test_table;
154
155 do
156 {
157 if (strcmp( pte->test_name, tname ) == 0)
158 return (*pte->test_proc)( fname, text );
159 pte++;
160 } while (--ct > 0);
161 fprintf( stderr, "fixincludes error: the `%s' fix test is unknown\n",
162 tname );
163 exit( 3 );
164 }
165