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 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 2, 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 COPYING. If not, write to 45the Free Software Foundation, 59 Temple Place - Suite 330, 46Boston, MA 02111-1307, USA. */ 47 48#include "fixlib.h" 49 50#define _ENV_(v,m,n,t) extern tCC* v; 51ENV_TABLE 52#undef _ENV_ 53 54typedef apply_fix_p_t t_test_proc ( tCC* file, tCC* text ); 55 56typedef 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 ) \ 66static apply_fix_p_t test ( tCC* fname ATTRIBUTE_UNUSED, \ 67 tCC* text ATTRIBUTE_UNUSED ) 68 69TEST_FOR_FIX_PROC_HEAD( machine_name_test ) 70{ 71#ifndef MN_NAME_PAT 72 return SKIP_FIX; 73#else 74 regex_t *label_re, *name_re; 75 regmatch_t match[2]; 76 tCC *base, *limit; 77 IGNORE_ARG(fname); 78 79 mn_get_regexps(&label_re, &name_re, "machine_name_test"); 80 81 for (base = text; 82 xregexec (label_re, base, 2, match, 0) == 0; 83 base = limit) 84 { 85 base += match[0].rm_eo; 86 /* We're looking at an #if or #ifdef. Scan forward for the 87 next non-escaped newline. */ 88 limit = base; 89 do 90 { 91 limit++; 92 limit = strchr (limit, '\n'); 93 if (!limit) 94 return SKIP_FIX; 95 } 96 while (limit[-1] == '\\'); 97 98 /* If the 'name_pat' matches in between base and limit, we have 99 a bogon. It is not worth the hassle of excluding comments, 100 because comments on #if/#ifdef/#ifndef lines are rare, 101 and strings on such lines are illegal. 102 103 REG_NOTBOL means 'base' is not at the beginning of a line, which 104 shouldn't matter since the name_re has no ^ anchor, but let's 105 be accurate anyway. */ 106 107 if (xregexec (name_re, base, 1, match, REG_NOTBOL)) 108 return SKIP_FIX; /* No match in file - no fix needed */ 109 110 /* Match; is it on the line? */ 111 if (match[0].rm_eo <= limit - base) 112 return APPLY_FIX; /* Yup */ 113 114 /* Otherwise, keep looking... */ 115 } 116 return SKIP_FIX; 117#endif 118} 119 120 121TEST_FOR_FIX_PROC_HEAD( stdc_0_in_system_headers_test ) 122{ 123#ifdef STDC_0_IN_SYSTEM_HEADERS 124 return (pz_machine == NULL) ? APPLY_FIX : SKIP_FIX; 125#else 126 return APPLY_FIX; 127#endif 128} 129 130 131/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 132 133 test for fix selector 134 135 THIS IS THE ONLY EXPORTED ROUTINE 136 137*/ 138apply_fix_p_t 139run_test( tCC* tname, tCC* fname, tCC* text ) 140{ 141#define _FT_(n,p) { n, p }, 142 static test_entry_t test_table[] = { FIX_TEST_TABLE { NULL, NULL }}; 143#undef _FT_ 144#define TEST_TABLE_CT (ARRAY_SIZE (test_table)-1) 145 146 int ct = TEST_TABLE_CT; 147 test_entry_t* pte = test_table; 148 149 do 150 { 151 if (strcmp( pte->test_name, tname ) == 0) 152 return (*pte->test_proc)( fname, text ); 153 pte++; 154 } while (--ct > 0); 155 fprintf( stderr, "fixincludes error: the `%s' fix test is unknown\n", 156 tname ); 157 exit( 3 ); 158} 159