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synced 2026-03-09 04:13:03 +00:00
Really remove parse-skel.y.
This commit is contained in:
Akim Demaille
@@ -5,5 +5,4 @@ bison
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*.log
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*.flc
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Makefile.in
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parse-skel.[ch] parse-skel.output
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scan-skel.c
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231
src/parse-skel.y
231
src/parse-skel.y
@@ -1,231 +0,0 @@
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/* -*- C -*- */
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/* Parse Bison Skeletons.
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Copyright (C) 2001 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 it
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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, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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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 the Free
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Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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%debug
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%defines
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%verbose
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%locations
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%name-prefix="skel_"
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%pure-parser
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%{
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#include "system.h"
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#include "obstack.h"
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#include "quotearg.h"
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#include "files.h"
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#include "getargs.h"
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#include "output.h"
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#include "skeleton.h"
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#include "muscle_tab.h"
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#define YYERROR_VERBOSE 1
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/* Pass the control structure to YYPARSE but not YYLEX (yet?). */
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#define YYPARSE_PARAM skel_control
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/* YYPARSE receives SKEL_CONTROL as a void *. Provide a correctly
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typed access to it. */
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#define yycontrol ((skel_control_t *) skel_control)
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FILE* parser = NULL;
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size_t output_line;
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size_t skeleton_line;
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static void merror PARAMS ((const char* error));
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/* Request detailed parse error messages, and pass them to
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YLEVAL_ERROR. */
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#undef yyerror
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#define yyerror(Msg) \
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skel_error (yycontrol, &yylloc, Msg)
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/* When debugging our pure parser, we want to see values and locations
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of the tokens. */
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#define YYPRINT(File, Type, Value) \
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yyprint (File, &yylloc, Type, &Value)
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static void yyprint (FILE *file, const yyltype *loc,
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int type, const yystype *value);
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%}
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%union
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{
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char *string;
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char character;
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int boolean;
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}
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/* Name of a muscle. */
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%token <string> MUSCLE
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/* A string dedicated to Bison (%%"foo"). */
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%token <string> STRING
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/* Raw data, to output directly. */
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%token <string> RAW
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/* Spaces. */
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%token <string> BLANKS
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/* Raw data, but char by char. */
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%token <character> CHARACTER
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%token LINE
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%token SLINE
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%token SECTION
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%token GUARDS
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%token TOKENS
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%token ACTIONS
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%type <string> string.1 string
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%start input
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%%
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input:
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{ LOCATION_RESET (yylloc) } skeleton
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;
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skeleton : /* Empty. */ { }
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| section skeleton { }
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;
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section : section.header section.body { }
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;
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section.header : SECTION BLANKS string '\n'
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{
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char *name = $3;
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/* Close the previous parser. */
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if (parser)
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parser = (xfclose (parser), NULL);
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/* Prepare the next parser to be output. */
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parser = xfopen (name, "w");
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MUSCLE_INSERT_STRING ("parser-file-name", name);
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XFREE (name);
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++skeleton_line;
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}
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;
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/* Either a literal string, or a muscle value. */
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string.1:
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STRING { $$ = $1; }
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| MUSCLE { $$ = xstrdup (muscle_find ($1)); }
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;
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/* Either a literal string, or a muscle value, or the concatenation of
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them. */
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string:
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string.1
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{ $$ = $1; }
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| string BLANKS string.1
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{ $$ = stringappend ($1, $3); free ($1); free ($3); }
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;
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section.body
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: /* Empty. */ { }
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| section.body '\n' { fputc ('\n', parser); ++output_line; ++skeleton_line; }
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| section.body LINE { fprintf (parser, "%d", output_line); }
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| section.body SLINE { fprintf (parser, "%d", skeleton_line); }
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| section.body GUARDS { guards_output (parser, &output_line); }
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| section.body TOKENS { token_definitions_output (parser, &output_line); }
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| section.body ACTIONS { actions_output (parser, &output_line); }
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| section.body CHARACTER { fputc ($2, parser); }
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| section.body RAW { fputs ($2, parser); }
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| section.body BLANKS { fputs ($2, parser); }
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| section.body MUSCLE {
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const char* value = muscle_find ($2);
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if (value)
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{
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fputs (value, parser);
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output_line += get_lines_number (value);
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}
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else
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{
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fprintf (parser, "%%{%s}", $2);
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merror ($2);
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}
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}
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;
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%%
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/*------------------------------------------------------------------.
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| When debugging the parser, display tokens' locations and values. |
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`------------------------------------------------------------------*/
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static void
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yyprint (FILE *file,
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const yyltype *loc, int type, const yystype *value)
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{
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fputs (" (", file);
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LOCATION_PRINT (file, *loc);
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fputs (")", file);
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switch (type)
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{
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case MUSCLE:
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case STRING:
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case RAW:
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case BLANKS:
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fprintf (file, " = %s", quotearg_style (c_quoting_style,
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value->string));
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break;
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case CHARACTER:
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fprintf (file, " = '%c'", value->character);
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break;
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}
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}
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static void
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merror (const char* error)
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{
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printf ("line %d: %%{%s} undeclared.\n", skeleton_line, error);
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}
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void
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skel_error (skel_control_t *control,
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const yyltype *loc, const char *msg)
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{
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/* Neutralize GCC warnings for unused parameters. */
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skel_control_t *c = control;
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c++;
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LOCATION_PRINT (stderr, *loc);
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fprintf (stderr, "%s\n", msg);
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}
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void
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process_skeleton (const char* skel)
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{
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/* Prepare a few things. */
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output_line = 1;
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skeleton_line = 1;
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/* Output. */
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skel_in = fopen (skel, "r");
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/* FIXME: This is not acceptable for a release. */
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skel__flex_debug = getenv ("BISON_TRACE_SCAN") ? 1 : 0;
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skel_debug = getenv ("BISON_TRACE_PARSE") ? 1 : 0;
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skel_parse (NULL);
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/* Close the last parser. */
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if (parser)
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parser = (xfclose (parser), NULL);
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}
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