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22c2cbc078
Using option ``-g'' or long option ``--graph'', you can generate a gram_filename.vcg file containing a VCG description of the LALR (1) automaton of your grammar. * src/main.c: Call to print_graph() function. * src/getargs.h: Update. * src/getargs.c (options): Update to catch `-g' and `--graph' options. (graph_flag): New flag. (longopts): Update. (getargs): Add case `g'. * src/files.c (graph_obstack): New obstack struct. (open_files): Initialize new obstack. (output_files): Saves graph_obstack if required. * src/files.h (graph_obstack): New extern declaration. * src/Makefile.am: Add new source files.
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
#ifndef FILES_H_
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# define FILES_H_
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/* File names and variables for bison,
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Copyright 1984, 1989, 2000 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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Bison is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Bison is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bison; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* These two should be pathnames for opening the sample parser files.
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When bison is installed, they should be absolute pathnames.
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XPFILE1 and XPFILE2 normally come from config.h. */
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/* File name specified with -o for the output file, or 0 if no -o. */
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extern char *spec_outfile;
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/* For -a. */
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extern char *spec_name_prefix;
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/* File name pfx specified with -b, or 0 if no -b. */
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extern char *spec_file_prefix;
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/* Read grammar specifications. */
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extern FILE *finput;
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/* Output all the action code; precise form depends on which parser. */
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extern struct obstack action_obstack;
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/* Output the tables and the parser and also contains all the %{
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... %} definitions. */
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extern struct obstack table_obstack;
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/* optionally output #define's for token numbers. */
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extern struct obstack defines_obstack;
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/* If semantic parser, output a .h file that defines YYSTYPE... */
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extern struct obstack attrs_obstack;
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/* ... and output yyguard, containing all the guard code. */
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extern struct obstack guard_obstack;
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/* The verbose output. */
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extern struct obstack output_obstack;
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/* The VCG graph output. */
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extern struct obstack graph_obstack;
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extern char *infile;
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extern char *attrsfile;
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extern const char *src_extension;
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extern const char *header_extension;
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void open_files PARAMS((void));
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void output_files PARAMS((void));
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FILE *xfopen PARAMS ((const char *name, const char *mode));
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int xfclose PARAMS ((FILE *ptr));
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const char *skeleton_find PARAMS ((const char *envvar,
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const char *skeleton_name));
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#endif /* !FILES_H_ */
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