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, 2009 Free Software Foundation, Inc. 7 8= = = = = = = = = = = = = = = = = = = = = = = = = 9 10NOTE TO DEVELOPERS 11 12The routines you write here must work closely with fixincl.c. 13 14Here are the rules: 15 161. Every test procedure name must be suffixed with "_test". 17 These routines will be referenced from inclhack.def, sans the suffix. 18 192. 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. 21 223. Put your test name into the FIX_TEST_TABLE 23 244. Do not write anything to stdout. It may be closed. 25 265. Write to stderr only in the event of a reportable error 27 In such an event, call "exit(1)". 28 29= = = = = = = = = = = = = = = = = = = = = = = = = 30 31This file is part of GCC. 32 33GCC is free software; you can redistribute it and/or modify 34it under the terms of the GNU General Public License as published by 35the Free Software Foundation; either version 3, or (at your option) 36any later version. 37 38GCC is distributed in the hope that it will be useful, 39but WITHOUT ANY WARRANTY; without even the implied warranty of 40MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 41GNU General Public License for more details. 42 43You should have received a copy of the GNU General Public License 44along with GCC; see the file COPYING3. If not see 45<http://www.gnu.org/licenses/>. */ 46 47#include "fixlib.h" 48 49#define _ENV_(v,m,n,t) extern tCC* v; 50ENV_TABLE 51#undef _ENV_ 52 53typedef apply_fix_p_t t_test_proc ( tCC* file, tCC* text ); 54 55typedef struct { 56 tCC* test_name; 57 t_test_proc* test_proc; 58} test_entry_t; 59 60#define FIX_TEST_TABLE \ 61 _FT_( "machine_name", machine_name_test ) \ 62 _FT_( "stdc_0_in_system_headers", stdc_0_in_system_headers_test ) 63 64#define TEST_FOR_FIX_PROC_HEAD( test ) \ 65static apply_fix_p_t test ( tCC* fname ATTRIBUTE_UNUSED, \ 66 tCC* text ATTRIBUTE_UNUSED ) 67 68TEST_FOR_FIX_PROC_HEAD( machine_name_test ) 69{ 70 regex_t *label_re, *name_re; 71 regmatch_t match[2]; 72 tCC *base, *limit; 73 IGNORE_ARG(fname); 74 75 if (!mn_get_regexps (&label_re, &name_re, "machine_name_test")) 76 return SKIP_FIX; 77 78 for (base = text; 79 xregexec (label_re, base, 2, match, 0) == 0; 80 base = limit) 81 { 82 base += match[0].rm_eo; 83 /* We're looking at an #if or #ifdef. Scan forward for the 84 next non-escaped newline. */ 85 limit = base; 86 do 87 { 88 limit++; 89 limit = strchr (limit, '\n'); 90 if (!limit) 91 return SKIP_FIX; 92 } 93 while (limit[-1] == '\\'); 94 95 /* If the 'name_pat' matches in between base and limit, we have 96 a bogon. It is not worth the hassle of excluding comments, 97 because comments on #if/#ifdef/#ifndef lines are rare, 98 and strings on such lines are illegal. 99 100 REG_NOTBOL means 'base' is not at the beginning of a line, which 101 shouldn't matter since the name_re has no ^ anchor, but let's 102 be accurate anyway. */ 103 104 if (xregexec (name_re, base, 1, match, REG_NOTBOL)) 105 return SKIP_FIX; /* No match in file - no fix needed */ 106 107 /* Match; is it on the line? */ 108 if (match[0].rm_eo <= limit - base) 109 return APPLY_FIX; /* Yup */ 110 111 /* Otherwise, keep looking... */ 112 } 113 return SKIP_FIX; 114} 115 116 117TEST_FOR_FIX_PROC_HEAD( stdc_0_in_system_headers_test ) 118{ 119#ifdef STDC_0_IN_SYSTEM_HEADERS 120 return (pz_machine == NULL) ? APPLY_FIX : SKIP_FIX; 121#else 122 return APPLY_FIX; 123#endif 124} 125 126 127/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 128 129 test for fix selector 130 131 THIS IS THE ONLY EXPORTED ROUTINE 132 133*/ 134apply_fix_p_t 135run_test( tCC* tname, tCC* fname, tCC* text ) 136{ 137#define _FT_(n,p) { n, p }, 138 static test_entry_t test_table[] = { FIX_TEST_TABLE { NULL, NULL }}; 139#undef _FT_ 140#define TEST_TABLE_CT (ARRAY_SIZE (test_table)-1) 141 142 int ct = TEST_TABLE_CT; 143 test_entry_t* pte = test_table; 144 145 do 146 { 147 if (strcmp( pte->test_name, tname ) == 0) 148 return (*pte->test_proc)( fname, text ); 149 pte++; 150 } while (--ct > 0); 151 fprintf( stderr, "fixincludes error: the `%s' fix test is unknown\n", 152 tname ); 153 exit( 3 ); 154} 155