#include "getargs.h"
#include "files.h"
#include "gram.h"
+#include "error.h"
#include "complain.h"
FILE *finput = NULL;
struct obstack action_obstack;
struct obstack attrs_obstack;
-struct obstack table_obstack;
-struct obstack defines_obstack;
-struct obstack guard_obstack;
struct obstack output_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
+ that if a %directive sets a variable which is really set (i.e., not
+ NULL), then the %directive is ignored. As a result, %name-prefix,
+ for instance, will not be honored. */
+
char *spec_outfile = NULL; /* for -o. */
char *spec_file_prefix = NULL; /* for -b. */
-char *spec_name_prefix = NULL; /* for -p. */
+const char *spec_name_prefix = NULL; /* for -p. */
char *spec_verbose_file = NULL; /* for --verbose. */
char *spec_graph_file = NULL; /* for -g. */
char *spec_defines_file = NULL; /* for --defines. */
+char *parser_file_name = NULL;
char *infile = NULL;
char *attrsfile = NULL;
static char *base_name = NULL;
-static char *short_base_name = NULL;
+char *short_base_name = NULL;
/* C source file extension (the parser source). */
const char *src_extension = NULL;
/* Header file extension (if option ``-d'' is specified). */
const char *header_extension = NULL;
+
+/* Should we insert '.tab' in yacc-compatible parsers? */
+int tab_extension = 0;
\f
/*--------------------------.
| Is SUFFIX ending STRING? |
`--------------------------*/
-static int
+int
strsuffix (const char *string, const char *suffix)
{
size_t string_len = strlen (string);
| STRING1, and STRING2. |
`-----------------------------------------------------------------*/
-static char *
+char*
stringappend (const char *string1, const char *string2)
{
size_t len = strlen (string1) + strlen (string2);
}
-/*---------------------------------------------------------------.
-| Computes the macro name used to avoid double inclusion in the |
-| header of the parser and store it in header_macro_name. |
-`---------------------------------------------------------------*/
+/*-----------------------------------------------------------------.
+| Computes the macro name used to avoid double inclusion in the |
+| header of the parser and store it in header_macro_name. Be sure |
+| to produce valid CPP names (don't start with digit, remain |
+| alphanumerical + underscore). |
+`-----------------------------------------------------------------*/
-static char *
+char *
compute_header_macro (void)
{
+ const char *prefix = "BISON_";
char *macro_name, *cp;
if (spec_defines_file)
- macro_name = xstrdup (spec_defines_file);
+ {
+ macro_name = XMALLOC (char,
+ strlen (prefix) +
+ strlen (spec_defines_file) + 1);
+ cp = stpcpy (macro_name, prefix);
+ cp = stpcpy (cp, spec_defines_file);
+ }
else
{
macro_name = XMALLOC (char,
+ strlen (prefix) +
strlen (base_name) +
strlen (header_extension) + 1);
-
- stpcpy (macro_name, base_name);
- strcat (macro_name, header_extension);
+ cp = stpcpy (macro_name, prefix);
+ cp = stpcpy (cp, base_name);
+ cp = stpcpy (cp, header_extension);
}
for (cp = macro_name; *cp; ++cp)
return result;
}
-/*--------------------------------------------------.
-| Save the content of the obstack OBS in FILENAME. |
-`--------------------------------------------------*/
-
-static void
-obstack_save (struct obstack *obs, const char *filename)
-{
- FILE *out = xfopen (filename, "w");
- size_t size = obstack_object_size (obs);
- fwrite (obstack_finish (obs), 1, size, out);
- xfclose (out);
-}
-
-/*---------------------------------------------------------------------.
-| Output double inclusion protection macros and saves defines_obstack |
-`---------------------------------------------------------------------*/
-
-static void
-defines_obstack_save (const char *filename)
-{
- FILE *out = xfopen (filename, "w");
- size_t size = obstack_object_size (&defines_obstack);
- char *macro_name = compute_header_macro ();
-
- fprintf (out, "#ifndef %s\n", macro_name);
- fprintf (out, "# define %s\n\n", macro_name);
- fwrite (obstack_finish (&defines_obstack), 1, size, out);
- fprintf (out, "\n#endif /* not %s */\n", macro_name);
-
- free (macro_name);
- xfclose (out);
-}
/*------------------------------------------------------------------.
| Return the path to the skeleton which locaction might be given in |
if (!res)
{
/* Skeleton file name without path */
- const char *skel_name = strrchr(skeleton_name, '/');
+ const char *skel_name = strrchr (skeleton_name, '/');
if (!skel_name)
- skel_name = strrchr(skeleton_name, '\\');
+ skel_name = strrchr (skeleton_name, '\\');
if (!skel_name)
skel_name = skeleton_name;
else
short_base_length -= 4;
short_base_name = strndup (spec_outfile, short_base_length);
+ /* FIXME: This is a quick and dirty way for me to find out if we
+ should .tab or not, using the computations above. */
+ if (strcmp (base_name, short_base_name))
+ tab_extension = 1;
+
return;
}
if (ext_index)
compute_exts_from_gf (infile + ext_index);
+ /* It seems that when only a prefix is given, '.tab' should always be
+ used. */
+ tab_extension = 1;
+
return;
}
strlen (short_base_name) + strlen (EXT_TAB) + 1);
stpcpy (stpcpy (base_name, short_base_name), EXT_TAB);
+ /* By default, Bison should insert '.tab' were needed. */
+ tab_extension = 1;
+
return;
}
}
{
compute_base_names ();
+ parser_file_name =
+ spec_outfile ? spec_outfile : stringappend (base_name, src_extension);
+
/* If not yet done. */
if (!src_extension)
src_extension = ".c";
#ifndef MSDOS
attrsfile = stringappend (attrsfile, header_extension);
#endif /* MSDOS */
-
-}
-
-/*-----------------------------------------------------------------.
-| Open the input file. Look for the skeletons. Find the names of |
-| the output files. Prepare the obstacks. |
-`-----------------------------------------------------------------*/
-
-void
-open_files (void)
-{
- finput = xfopen (infile, "r");
-
- /* Initialize the obstacks. */
- obstack_init (&action_obstack);
- obstack_init (&attrs_obstack);
- obstack_init (&table_obstack);
- obstack_init (&defines_obstack);
- obstack_init (&guard_obstack);
- obstack_init (&output_obstack);
-}
-
-
-
-/*-----------------------.
-| Close the open file.. |
-`-----------------------*/
-
-void
-close_files (void)
-{
- xfclose (finput);
-}
-
-/*---------------------------.
-| Produce the output files. |
-`---------------------------*/
-
-void
-output_files (void)
-{
- /* Output the main file. */
- if (spec_outfile)
- obstack_save (&table_obstack, spec_outfile);
- else
- obstack_save (&table_obstack, stringappend (base_name, src_extension));
- obstack_free (&table_obstack, NULL);
-
- /* Output the header file if wanted. */
- if (defines_flag)
- defines_obstack_save (spec_defines_file);
- obstack_free (&defines_obstack, NULL);
-
-#if 0
- /* Seems to be invalid now --akim. */
-
- /* If we output only the table, dump the actions in ACTFILE. */
- if (no_parser_flag)
- obstack_save (&action_obstack, stringappend (short_base_name, ".act"));
- obstack_free (&action_obstack, NULL);
-#endif
-
- /* If we produced a semantic parser ATTRS_OBSTACK must be dumped
- into its own file, ATTTRSFILE. */
- if (semantic_parser)
- {
- char *temp_name;
-
- obstack_save (&attrs_obstack, attrsfile);
- obstack_free (&attrs_obstack, NULL);
- temp_name = stringappend (short_base_name, EXT_GUARD_C);
-#ifndef MSDOS
- temp_name = stringappend (temp_name, src_extension);
-#endif /* MSDOS */
- obstack_save (&guard_obstack, temp_name);
- obstack_free (&guard_obstack, NULL);
- }
}
projects / bison.git / blobdiff