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1
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2 /*
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3
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4 Test to see if a particular fix should be applied to a header file.
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5
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111
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6 Copyright (C) 1997, 1998, 1999, 2000, 2009, 2012
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7 Free Software Foundation, Inc.
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8
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9 = = = = = = = = = = = = = = = = = = = = = = = = =
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10
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11 NOTE TO DEVELOPERS
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12
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13 The routines you write here must work closely with fixincl.c.
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14
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15 Here are the rules:
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16
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17 1. Every test procedure name must be suffixed with "_test".
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18 These routines will be referenced from inclhack.def, sans the suffix.
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19
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20 2. Use the "TEST_FOR_FIX_PROC_HEAD()" macro _with_ the "_test" suffix
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21 (I cannot use the ## magic from ANSI C) for defining your entry point.
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22
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23 3. Put your test name into the FIX_TEST_TABLE
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24
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25 4. Do not write anything to stdout. It may be closed.
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26
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27 5. Write to stderr only in the event of a reportable error
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28 In such an event, call "exit(1)".
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29
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30 = = = = = = = = = = = = = = = = = = = = = = = = =
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31
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32 This file is part of GCC.
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33
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34 GCC is free software; you can redistribute it and/or modify
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35 it under the terms of the GNU General Public License as published by
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36 the Free Software Foundation; either version 3, or (at your option)
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37 any later version.
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38
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39 GCC is distributed in the hope that it will be useful,
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40 but WITHOUT ANY WARRANTY; without even the implied warranty of
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41 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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42 GNU General Public License for more details.
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43
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44 You should have received a copy of the GNU General Public License
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45 along with GCC; see the file COPYING3. If not see
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46 <http://www.gnu.org/licenses/>. */
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47
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48 #include "fixlib.h"
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49
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111
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50 #define _ENV_(v,m,n,t) extern char const * v;
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0
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51 ENV_TABLE
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52 #undef _ENV_
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53
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54 typedef apply_fix_p_t t_test_proc ( tCC* file, tCC* text );
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55
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56 typedef struct {
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57 tCC* test_name;
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58 t_test_proc* test_proc;
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59 } test_entry_t;
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60
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61 #define FIX_TEST_TABLE \
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62 _FT_( "machine_name", machine_name_test ) \
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63 _FT_( "stdc_0_in_system_headers", stdc_0_in_system_headers_test )
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64
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65 #define TEST_FOR_FIX_PROC_HEAD( test ) \
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66 static apply_fix_p_t test ( tCC* fname ATTRIBUTE_UNUSED, \
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67 tCC* text ATTRIBUTE_UNUSED )
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68
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69 TEST_FOR_FIX_PROC_HEAD( machine_name_test )
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70 {
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71 regex_t *label_re, *name_re;
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72 regmatch_t match[2];
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73 tCC *base, *limit;
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74 IGNORE_ARG(fname);
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75
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76 if (!mn_get_regexps (&label_re, &name_re, "machine_name_test"))
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77 return SKIP_FIX;
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78
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79 for (base = text;
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80 xregexec (label_re, base, 2, match, 0) == 0;
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81 base = limit)
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82 {
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83 base += match[0].rm_eo;
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84 /* We're looking at an #if or #ifdef. Scan forward for the
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85 next non-escaped newline. */
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86 limit = base;
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87 do
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88 {
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89 limit++;
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90 limit = strchr (limit, '\n');
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91 if (!limit)
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92 return SKIP_FIX;
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93 }
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94 while (limit[-1] == '\\');
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95
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96 /* If the 'name_pat' matches in between base and limit, we have
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97 a bogon. It is not worth the hassle of excluding comments,
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98 because comments on #if/#ifdef/#ifndef lines are rare,
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99 and strings on such lines are illegal.
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100
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101 REG_NOTBOL means 'base' is not at the beginning of a line, which
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102 shouldn't matter since the name_re has no ^ anchor, but let's
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103 be accurate anyway. */
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104
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105 if (xregexec (name_re, base, 1, match, REG_NOTBOL))
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106 return SKIP_FIX; /* No match in file - no fix needed */
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107
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108 /* Match; is it on the line? */
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109 if (match[0].rm_eo <= limit - base)
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110 return APPLY_FIX; /* Yup */
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111
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112 /* Otherwise, keep looking... */
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113 }
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114 return SKIP_FIX;
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115 }
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116
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117
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118 TEST_FOR_FIX_PROC_HEAD( stdc_0_in_system_headers_test )
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119 {
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120 #ifdef STDC_0_IN_SYSTEM_HEADERS
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121 return (pz_machine == NULL) ? APPLY_FIX : SKIP_FIX;
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122 #else
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123 return APPLY_FIX;
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124 #endif
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125 }
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126
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127
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128 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
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129
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130 test for fix selector
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131
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132 THIS IS THE ONLY EXPORTED ROUTINE
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133
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134 */
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135 apply_fix_p_t
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136 run_test( tCC* tname, tCC* fname, tCC* text )
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137 {
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138 #define _FT_(n,p) { n, p },
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139 static test_entry_t test_table[] = { FIX_TEST_TABLE { NULL, NULL }};
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140 #undef _FT_
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141 #define TEST_TABLE_CT (ARRAY_SIZE (test_table)-1)
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142
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143 int ct = TEST_TABLE_CT;
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144 test_entry_t* pte = test_table;
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145
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146 do
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147 {
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148 if (strcmp( pte->test_name, tname ) == 0)
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149 return (*pte->test_proc)( fname, text );
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150 pte++;
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151 } while (--ct > 0);
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152 fprintf( stderr, "fixincludes error: the `%s' fix test is unknown\n",
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153 tname );
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154 exit( 3 );
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155 }
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