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/*

   Test to see if a particular fix should be applied to a header file.

   Copyright (C) 1997, 1998, 1999, 2000, 2009 Free Software Foundation, Inc.

= = = = = = = = = = = = = = = = = = = = = = = = =

NOTE TO DEVELOPERS

The routines you write here must work closely with fixincl.c.

Here are the rules:

1.  Every test procedure name must be suffixed with "_test".

    These routines will be referenced from inclhack.def, sans the suffix.

2.  Use the "TEST_FOR_FIX_PROC_HEAD()" macro _with_ the "_test" suffix

    (I cannot use the ## magic from ANSI C) for defining your entry point.

3.  Put your test name into the FIX_TEST_TABLE

4.  Do not write anything to stdout.  It may be closed.

5.  Write to stderr only in the event of a reportable error

    In such an event, call "exit(1)".

= = = = = = = = = = = = = = = = = = = = = = = = =

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#include "fixlib.h"

#define _ENV_(v,m,n,t)   extern tCC* v;

ENV_TABLE

#undef _ENV_

typedef apply_fix_p_t t_test_proc ( tCC* file, tCC* text );

typedef struct {

    tCC*         test_name;

    t_test_proc* test_proc;

} test_entry_t;

#define FIX_TEST_TABLE                                                  \

  _FT_( "machine_name",     machine_name_test )                         \

  _FT_( "stdc_0_in_system_headers",    stdc_0_in_system_headers_test )

#define TEST_FOR_FIX_PROC_HEAD( test ) \

static apply_fix_p_t test ( tCC* fname ATTRIBUTE_UNUSED, \

                            tCC* text  ATTRIBUTE_UNUSED )

TEST_FOR_FIX_PROC_HEAD( machine_name_test )

{

  regex_t *label_re, *name_re;

  regmatch_t match[2];

  tCC *base, *limit;

  IGNORE_ARG(fname);

  if (!mn_get_regexps (&label_re, &name_re, "machine_name_test"))

    return SKIP_FIX;

  for (base = text;

       xregexec (label_re, base, 2, match, 0) == 0;

       base = limit)

    {

      base += match[0].rm_eo;

      /* We're looking at an #if or #ifdef.  Scan forward for the

         next non-escaped newline.  */

      limit = base;

      do

        {

          limit++;

          limit = strchr (limit, '\n');

          if (!limit)

            return SKIP_FIX;

        }

      while (limit[-1] == '\\');

      /* If the 'name_pat' matches in between base and limit, we have

         a bogon.  It is not worth the hassle of excluding comments,

         because comments on #if/#ifdef/#ifndef lines are rare,

         and strings on such lines are illegal.

         REG_NOTBOL means 'base' is not at the beginning of a line, which

         shouldn't matter since the name_re has no ^ anchor, but let's

         be accurate anyway.  */

      if (xregexec (name_re, base, 1, match, REG_NOTBOL))

        return SKIP_FIX;  /* No match in file - no fix needed */

      /* Match; is it on the line?  */

      if (match[0].rm_eo <= limit - base)

        return APPLY_FIX;  /* Yup */

      /* Otherwise, keep looking... */

    }

  return SKIP_FIX;

}

TEST_FOR_FIX_PROC_HEAD( stdc_0_in_system_headers_test )

{

#ifdef STDC_0_IN_SYSTEM_HEADERS

  return (pz_machine == NULL) ? APPLY_FIX : SKIP_FIX;

#else

  return APPLY_FIX;

#endif

}

/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

     test for fix selector

     THIS IS THE ONLY EXPORTED ROUTINE

*/

apply_fix_p_t

run_test( tCC* tname, tCC* fname, tCC* text )

{

#define _FT_(n,p) { n, p },

  static test_entry_t test_table[] = { FIX_TEST_TABLE { NULL, NULL }};

#undef _FT_

#define TEST_TABLE_CT (ARRAY_SIZE (test_table)-1)

  int ct = TEST_TABLE_CT;

  test_entry_t* pte = test_table;

  do

    {

      if (strcmp( pte->test_name, tname ) == 0)

        return (*pte->test_proc)( fname, text );

      pte++;

    } while (--ct > 0);

  fprintf( stderr, "fixincludes error:  the `%s' fix test is unknown\n",

           tname );

  exit( 3 );

}