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 GNU CC. 32 33GNU CC 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 38GNU CC 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 GNU CC; 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 PARAMS(( 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 PARAMS(( tCC* file, tCC* text )); \ 67static apply_fix_p_t test ( fname, text ) \ 68 tCC* fname; \ 69 tCC* text; 70 71 72TEST_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 124TEST_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*/ 141apply_fix_p_t 142run_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