#include "system.h"
#include "getargs.h"
#include "files.h"
-#include "xalloc.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;
-struct obstack graph_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)
{
- int ite;
- char *macro_name;
+ const char *prefix = "BISON_";
+ char *macro_name, *cp;
- macro_name = XMALLOC (char,
- strlen (base_name) +
- strlen (header_extension) + 1);
+ if (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);
+ cp = stpcpy (macro_name, prefix);
+ cp = stpcpy (cp, base_name);
+ cp = stpcpy (cp, header_extension);
+ }
- stpcpy (macro_name, base_name);
- strcat (macro_name, header_extension);
+ for (cp = macro_name; *cp; ++cp)
+ if (islower (*cp))
+ *cp = toupper (*cp);
+ else if (!isalnum (*cp))
+ *cp = '_';
- for (ite = 0; macro_name[ite]; ite++)
- if (macro_name[ite] == '.')
- macro_name[ite] = '_';
- else
- {
- if (islower (macro_name[ite]))
- macro_name[ite] -= ('a' - 'A');
- }
return macro_name;
}
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 |
{
const char *res = getenv (envvar);
-#ifdef MSDOS
- const char *cp;
-
- /* File doesn't exist in current directory; try in INIT directory. */
- if (!res && (cp = getenv ("INIT")))
+#if defined (MSDOS) || defined (_WIN32)
+ if (!res)
{
- res = XMALLOC (char, strlen (cp) + strlen (skeleton_name) + 2);
- sprintf (res, "%s%c%s", cp, '/', skeleton_name);
+ /* Skeleton file name without path */
+ const char *skel_name = strrchr (skeleton_name, '/');
+ if (!skel_name)
+ skel_name = strrchr (skeleton_name, '\\');
+ if (!skel_name)
+ skel_name = skeleton_name;
+ else
+ ++skel_name;
+
+ /* File doesn't exist in current directory; try in INIT directory. */
+ const char *cp = getenv ("INIT");
+ if (cp)
+ {
+ res = XMALLOC (char, strlen (cp) + strlen (skel_name) + 2);
+ sprintf (res, "%s%c%s", cp, '\\', skel_name);
+ }
+ else if (access (skel_name, 4) == 0) /* Look in current dir. */
+ res = skel_name;
+ else
+ {
+ /* Look in program locations dir. */
+ extern char *program_name;
+ cp = strrchr(program_name, '\\');
+ if (!cp)
+ return skeleton_name;
+ else
+ ++cp;
+ res = XMALLOC (char, cp - program_name + strlen (skel_name) + 1);
+ strncpy (res, program_name, cp - program_name);
+ strcpy (res + (cp - program_name), skel_name);
+ }
}
-#endif /* !MSDOS */
-
+#endif /* defined (MSDOS) || defined (_WIN32) */
if (!res)
res = skeleton_name;
static void
compute_exts_from_gf (const char *ext)
{
- /* Checks if SRC_EXTENSION is NULL. In the other case, %source_extension
- was specified in the grammar file. */
- if (src_extension == NULL)
- {
- src_extension = tr (ext, 'y', 'c');
- src_extension = tr (src_extension, 'Y', 'C');
- }
- /* Checks if HEADER_EXTENSION is NULL. In the other case,
- %header_extension was specified in the grammar file. */
- if (header_extension == NULL)
- {
- header_extension = tr (ext, 'y', 'h');
- header_extension = tr (header_extension, 'Y', 'H');
- }
+ 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');
}
/* Computes extensions from the given c source file extension. */
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;
}
}
-/*-----------------------------------------------------------------.
-| 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);
- obstack_init (&graph_obstack);
-}
-
-
-
-/*-----------------------------------------------------.
-| Close the open files, produce all the output files. |
-`-----------------------------------------------------*/
+/*-------------------------------------------------------.
+| Close the open files, compute the output files names. |
+`-------------------------------------------------------*/
void
-output_files (void)
+compute_output_file_names (void)
{
- xfclose (finput);
-
compute_base_names ();
- /* Set default extensions */
+ parser_file_name =
+ spec_outfile ? spec_outfile : stringappend (base_name, src_extension);
+
+ /* If not yet done. */
if (!src_extension)
src_extension = ".c";
if (!header_extension)
header_extension = ".h";
- attrsfile = stringappend (short_base_name, EXT_STYPE_H);
-#ifndef MSDOS
- stringappend (attrsfile, header_extension);
-#endif /* MSDOS */
-
- /* Output the main file. */
- if (spec_outfile)
- obstack_save (&table_obstack, spec_outfile);
- else
- obstack_save (&table_obstack, stringappend (base_name, src_extension));
+ /* It the defines filename if not given, we create it. */
+ if (!spec_defines_file)
+ spec_defines_file = stringappend (base_name, header_extension);
- /* Output the header file if wanted. */
- if (defines_flag)
- defines_obstack_save (stringappend (base_name, header_extension));
+ /* It the graph filename if not given, we create it. */
+ if (!spec_graph_file)
+ spec_graph_file = stringappend (short_base_name, ".vcg");
- /* If we output only the table, dump the actions in ACTFILE. */
- if (no_parser_flag)
- obstack_save (&action_obstack, stringappend (short_base_name, ".act"));
-
- /* If we produced a semantic parser ATTRS_OBSTACK must be dumped
- into its own file, ATTTRSFILE. */
- if (semantic_parser)
- {
- char *temp_name;
+ spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT);
- obstack_save (&attrs_obstack, attrsfile);
- temp_name = stringappend (short_base_name, EXT_GUARD_C);
+ attrsfile = stringappend (short_base_name, EXT_STYPE_H);
#ifndef MSDOS
- temp_name = stringappend (temp_name, src_extension);
+ attrsfile = stringappend (attrsfile, header_extension);
#endif /* MSDOS */
- obstack_save (&guard_obstack, temp_name);
- }
-
- if (verbose_flag)
- /* We used to use just .out if spec_name_prefix (-p) was used, but
- that conflicts with Posix. */
- obstack_save (&output_obstack,
- stringappend (short_base_name, EXT_OUTPUT));
-
- if (graph_flag)
- obstack_save (&graph_obstack, stringappend (short_base_name, ".vcg"));
}
projects / bison.git / blobdiff