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 GCC. 32 33 GCC 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 GCC 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 GCC; see the file COPYING. If not, write to 45 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 46 Boston, MA 02110-1301, 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 ( 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 ( tCC* fname ATTRIBUTE_UNUSED, \ 67 tCC* text ATTRIBUTE_UNUSED ) 68 69 TEST_FOR_FIX_PROC_HEAD( machine_name_test ) 70 { 71 regex_t *label_re, *name_re; 72 regmatch_t match[2]; 73 tCC *base, *limit; 74 IGNORE_ARG(fname); 75 76 if (!mn_get_regexps (&label_re, &name_re, "machine_name_test")) 77 return SKIP_FIX; 78 79 for (base = text; 80 xregexec (label_re, base, 2, match, 0) == 0; 81 base = limit) 82 { 83 base += match[0].rm_eo; 84 /* We're looking at an #if or #ifdef. Scan forward for the 85 next non-escaped newline. */ 86 limit = base; 87 do 88 { 89 limit++; 90 limit = strchr (limit, '\n'); 91 if (!limit) 92 return SKIP_FIX; 93 } 94 while (limit[-1] == '\\'); 95 96 /* If the 'name_pat' matches in between base and limit, we have 97 a bogon. It is not worth the hassle of excluding comments, 98 because comments on #if/#ifdef/#ifndef lines are rare, 99 and strings on such lines are illegal. 100 101 REG_NOTBOL means 'base' is not at the beginning of a line, which 102 shouldn't matter since the name_re has no ^ anchor, but let's 103 be accurate anyway. */ 104 105 if (xregexec (name_re, base, 1, match, REG_NOTBOL)) 106 return SKIP_FIX; /* No match in file - no fix needed */ 107 108 /* Match; is it on the line? */ 109 if (match[0].rm_eo <= limit - base) 110 return APPLY_FIX; /* Yup */ 111 112 /* Otherwise, keep looking... */ 113 } 114 return SKIP_FIX; 115 } 116 117 118 TEST_FOR_FIX_PROC_HEAD( stdc_0_in_system_headers_test ) 119 { 120 #ifdef STDC_0_IN_SYSTEM_HEADERS 121 return (pz_machine == NULL) ? APPLY_FIX : SKIP_FIX; 122 #else 123 return APPLY_FIX; 124 #endif 125 } 126 127 128 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 129 130 test for fix selector 131 132 THIS IS THE ONLY EXPORTED ROUTINE 133 134 */ 135 apply_fix_p_t 136 run_test( tCC* tname, tCC* fname, tCC* text ) 137 { 138 #define _FT_(n,p) { n, p }, 139 static test_entry_t test_table[] = { FIX_TEST_TABLE { NULL, NULL }}; 140 #undef _FT_ 141 #define TEST_TABLE_CT (ARRAY_SIZE (test_table)-1) 142 143 int ct = TEST_TABLE_CT; 144 test_entry_t* pte = test_table; 145 146 do 147 { 148 if (strcmp( pte->test_name, tname ) == 0) 149 return (*pte->test_proc)( fname, text ); 150 pte++; 151 } while (--ct > 0); 152 fprintf( stderr, "fixincludes error: the `%s' fix test is unknown\n", 153 tname ); 154 exit( 3 ); 155 } 156