Avoid warnings from gcc -Wundef y.tab.c.

[bison.git] / src / files.c

diff --git a/src/files.c b/src/files.c
index d324966b92dcdbfa997cd80a6b8ae3a0ae51d284..8d37a380aaeb9b0f105b23770d84298f6c718e8b 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -1,24 +1,22 @@
 /* Open and close files for Bison.
 
    Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
 /* Open and close files for Bison.
 
    Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,

-   2005, 2006 Free Software Foundation, Inc.
+   2005, 2006, 2007, 2008-2009 Free Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 

-   Bison 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 2, or (at your option)
-   any later version.
+   This program 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 of the License, or
+   (at your option) any later version.

 
 

-   Bison 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.
+   This program 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
 
    You should have received a copy of the GNU General Public License

-   along with Bison; see the file COPYING.  If not, write to the Free
-   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #include <config.h>
 #include "system.h"
 
 #include <config.h>
 #include "system.h"


@@ -35,9 +33,6 @@
 #include "getargs.h"
 #include "gram.h"
 
 #include "getargs.h"
 #include "gram.h"
 

-struct obstack pre_prologue_obstack;
-struct obstack post_prologue_obstack;
-

 /* Initializing some values below (such SPEC_NAME_PREFIX to `yy') is
    tempting, but don't do that: for the time being our handling of the
    %directive vs --option leaves precedence to the options by deciding
 /* Initializing some values below (such SPEC_NAME_PREFIX to `yy') is
    tempting, but don't do that: for the time being our handling of the
    %directive vs --option leaves precedence to the options by deciding


@@ -48,10 +43,15 @@ struct obstack post_prologue_obstack;
 char const *spec_outfile = NULL;       /* for -o. */
 char const *spec_file_prefix = NULL;   /* for -b. */
 char const *spec_name_prefix = NULL;   /* for -p. */
 char const *spec_outfile = NULL;       /* for -o. */
 char const *spec_file_prefix = NULL;   /* for -b. */
 char const *spec_name_prefix = NULL;   /* for -p. */

-char const *spec_verbose_file = NULL;  /* for --verbose. */
-char const *spec_graph_file = NULL;    /* for -g. */
-char const *spec_defines_file = NULL;  /* for --defines. */
-char const *parser_file_name;
+char *spec_verbose_file = NULL;  /* for --verbose. */
+char *spec_graph_file = NULL;    /* for -g. */
+char *spec_xml_file = NULL;      /* for -x. */
+char *spec_defines_file = NULL;  /* for --defines. */
+char *parser_file_name;
+
+/* All computed output file names.  */
+static char **file_names = NULL;
+static int file_names_count = 0;

 
 uniqstr grammar_file = NULL;
 uniqstr current_file = NULL;
 
 uniqstr grammar_file = NULL;
 uniqstr current_file = NULL;


@@ -72,14 +72,14 @@ uniqstr current_file = NULL;
    empty string (meaning the current directory); otherwise it is
    `dir/'.  */
 
    empty string (meaning the current directory); otherwise it is
    `dir/'.  */
 

-static char const *all_but_ext;
-static char const *all_but_tab_ext;
-char const *dir_prefix;
+char *all_but_ext;
+static char *all_but_tab_ext;
+char *dir_prefix;

 
 /* C source file extension (the parser source).  */
 
 /* C source file extension (the parser source).  */

-static char const *src_extension = NULL;
+static char *src_extension = NULL;

 /* Header file extension (if option ``-d'' is specified).  */
 /* Header file extension (if option ``-d'' is specified).  */

-static char const *header_extension = NULL;
+static char *header_extension = NULL;

 \f
 /*-----------------------------------------------------------------.
 | Return a newly allocated string composed of the concatenation of |
 \f
 /*-----------------------------------------------------------------.
 | Return a newly allocated string composed of the concatenation of |


@@ -136,31 +136,33 @@ xfclose (FILE *ptr)
 | Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
 `------------------------------------------------------------------*/
 
 | Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
 `------------------------------------------------------------------*/
 

-/* Replace all characters FROM by TO in the string IN.
-   and returns a new allocated string.  */
-static char *
-tr (const char *in, char from, char to)
+/* In the string S, replace all characters FROM by TO.  */
+static void
+tr (char *s, char from, char to)

 {
 {

-  char *temp;
-  char *out = xmalloc (strlen (in) + 1);
-
-  for (temp = out; *in; in++, out++)
-    if (*in == from)
-      *out = to;
-    else
-      *out = *in;
-  *out = 0;
-  return (temp);
+  for (; *s; s++)
+    if (*s == from)
+      *s = to;

 }
 
 /* Compute extensions from the grammar file extension.  */
 static void
 compute_exts_from_gf (const char *ext)
 {
 }
 
 /* Compute extensions from the grammar file extension.  */
 static void
 compute_exts_from_gf (const char *ext)
 {

-  src_extension = tr (ext, 'y', 'c');
-  src_extension = tr (src_extension, 'Y', 'C');
-  header_extension = tr (ext, 'y', 'h');
-  header_extension = tr (header_extension, 'Y', 'H');
+  if (strcmp (ext, ".y") == 0)
+    {
+      src_extension = xstrdup (language->src_extension);
+      header_extension = xstrdup (language->header_extension);
+    }
+  else
+    {
+      src_extension = xstrdup (ext);
+      header_extension = xstrdup (ext);
+      tr (src_extension, 'y', 'c');
+      tr (src_extension, 'Y', 'C');
+      tr (header_extension, 'y', 'h');
+      tr (header_extension, 'Y', 'H');
+    }

 }
 
 /* Compute extensions from the given c source file extension.  */
 }
 
 /* Compute extensions from the given c source file extension.  */


@@ -171,8 +173,9 @@ compute_exts_from_src (const char *ext)
      so the extenions must be computed unconditionally from the file name
      given by this option.  */
   src_extension = xstrdup (ext);
      so the extenions must be computed unconditionally from the file name
      given by this option.  */
   src_extension = xstrdup (ext);

-  header_extension = tr (ext, 'c', 'h');
-  header_extension = tr (header_extension, 'C', 'H');
+  header_extension = xstrdup (ext);
+  tr (header_extension, 'c', 'h');
+  tr (header_extension, 'C', 'H');

 }
 
 
 }
 
 


@@ -264,25 +267,30 @@ compute_file_name_parts (void)
       if (spec_file_prefix)
        {
          /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = `foo'.  */
       if (spec_file_prefix)
        {
          /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = `foo'.  */

-         dir_prefix = xstrndup (grammar_file, base - grammar_file);
+         dir_prefix =
+            xstrndup (spec_file_prefix,
+                      last_component (spec_file_prefix) - spec_file_prefix);

          all_but_tab_ext = xstrdup (spec_file_prefix);
        }
       else if (yacc_flag)
        {
          /* If --yacc, then the output is `y.tab.c'.  */
          all_but_tab_ext = xstrdup (spec_file_prefix);
        }
       else if (yacc_flag)
        {
          /* If --yacc, then the output is `y.tab.c'.  */

-         dir_prefix = "";
-         all_but_tab_ext = "y";
+         dir_prefix = xstrdup ("");
+         all_but_tab_ext = xstrdup ("y");

        }
       else
        {
          /* Otherwise, ALL_BUT_TAB_EXT is computed from the input
             grammar: `foo/bar.yy' => `bar'.  */
        }
       else
        {
          /* Otherwise, ALL_BUT_TAB_EXT is computed from the input
             grammar: `foo/bar.yy' => `bar'.  */

-         dir_prefix = "";
+         dir_prefix = xstrdup ("");

          all_but_tab_ext =
            xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0)));
        }
 
          all_but_tab_ext =
            xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0)));
        }
 

-      all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
+      if (language->add_tab)
+        all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
+      else
+        all_but_ext = xstrdup (all_but_tab_ext);

 
       /* Compute the extensions from the grammar file name.  */
       if (ext && !yacc_flag)
 
       /* Compute the extensions from the grammar file name.  */
       if (ext && !yacc_flag)


@@ -297,44 +305,80 @@ compute_file_name_parts (void)
 void
 compute_output_file_names (void)
 {
 void
 compute_output_file_names (void)
 {

-  char const *name[4];
-  int i;
-  int j;
-  int names = 0;
-

   compute_file_name_parts ();
 
   /* If not yet done. */
   if (!src_extension)
   compute_file_name_parts ();
 
   /* If not yet done. */
   if (!src_extension)

-    src_extension = ".c";
+    src_extension = xstrdup (".c");

   if (!header_extension)
   if (!header_extension)

-    header_extension = ".h";
+    header_extension = xstrdup (".h");

 
 

-  name[names++] = parser_file_name =
-    spec_outfile ? spec_outfile : concat2 (all_but_ext, src_extension);
+  parser_file_name =
+    (spec_outfile
+     ? xstrdup (spec_outfile)
+     : concat2 (all_but_ext, src_extension));

 
   if (defines_flag)
     {
       if (! spec_defines_file)
        spec_defines_file = concat2 (all_but_ext, header_extension);
 
   if (defines_flag)
     {
       if (! spec_defines_file)
        spec_defines_file = concat2 (all_but_ext, header_extension);

-      name[names++] = spec_defines_file;

     }
 
   if (graph_flag)
     {
       if (! spec_graph_file)
     }
 
   if (graph_flag)
     {
       if (! spec_graph_file)

-       spec_graph_file = concat2 (all_but_tab_ext, ".vcg");
-      name[names++] = spec_graph_file;
+       spec_graph_file = concat2 (all_but_tab_ext, ".dot");
+      output_file_name_check (spec_graph_file);
+    }
+
+  if (xml_flag)
+    {
+      if (! spec_xml_file)
+       spec_xml_file = concat2 (all_but_tab_ext, ".xml");
+      output_file_name_check (spec_xml_file);

     }
 
   if (report_flag)
     {
     }
 
   if (report_flag)
     {

-      spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
-      name[names++] = spec_verbose_file;
+      if (!spec_verbose_file)
+        spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
+      output_file_name_check (spec_verbose_file);

     }
 
     }
 

-  for (j = 0; j < names; j++)
-    for (i = 0; i < j; i++)
-      if (strcmp (name[i], name[j]) == 0)
-       warn (_("conflicting outputs to file %s"), quote (name[i]));
+  free (all_but_tab_ext);
+  free (src_extension);
+  free (header_extension);
+}
+
+void
+output_file_name_check (char const *file_name)
+{
+  if (0 == strcmp (file_name, grammar_file))
+    fatal (_("refusing to overwrite the input file %s"), quote (file_name));
+  {
+    int i;
+    for (i = 0; i < file_names_count; i++)
+      if (0 == strcmp (file_names[i], file_name))
+        warn (_("conflicting outputs to file %s"), quote (file_name));
+  }
+  file_names = xnrealloc (file_names, ++file_names_count, sizeof *file_names);
+  file_names[file_names_count-1] = xstrdup (file_name);
+}
+
+void
+output_file_names_free (void)
+{
+  free (all_but_ext);
+  free (spec_verbose_file);
+  free (spec_graph_file);
+  free (spec_xml_file);
+  free (spec_defines_file);
+  free (parser_file_name);
+  free (dir_prefix);
+  {
+    int i;
+    for (i = 0; i < file_names_count; i++)
+      free (file_names[i]);
+  }
+  free (file_names);

 }
 }