a4cd5630b0
non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
170 lines
3.2 KiB
Plaintext
170 lines
3.2 KiB
Plaintext
/* Bytecode definition file parser.
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Copyright (C) 1993 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC 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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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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%{
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#include <stdio.h>
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#include "hconfig.h"
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#include "bi-defs.h"
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extern char yytext[];
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extern int yyleng;
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/* Chain of all defs built by the parser. */
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struct def *defs;
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int ndefs;
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static struct node *makenode ();
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static struct variation *makevar ();
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static struct def *makedef ();
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void yyerror ();
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%}
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%union
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{
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char *string;
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struct def *def;
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struct variation *variation;
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struct node *node;
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}
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%token <string> DEFOP STRING
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%type <string> opt_string
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%type <def> defs def
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%type <variation> variations variation
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%type <node> list items item
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%%
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top:
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defs
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{ defs = $1; }
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;
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defs:
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def
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| defs def
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{ $2->next = $1; $$ = $2; }
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;
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def:
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DEFOP '(' STRING ',' opt_string ',' '(' variations ')' ')'
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{ $$ = makedef ($3, $5, $8); }
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;
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variations:
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variation
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| variations ',' variation
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{ $3->next = $1; $$ = $3; }
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;
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variation:
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'(' opt_string ')'
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{ $$ = makevar ($2, (struct node *) NULL, (struct node *) NULL, (struct node *) NULL); }
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| '(' opt_string ',' list ')'
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{ $$ = makevar ($2, $4, (struct node *) NULL, (struct node *) NULL); }
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| '(' opt_string ',' list ',' list ')'
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{ $$ = makevar ($2, $4, $6, (struct node *) NULL); }
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| '(' opt_string ',' list ',' list ',' list ')'
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{ $$ = makevar ($2, $4, $6, $8); }
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;
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opt_string:
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/* empty */ { $$ = ""; }
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| STRING { $$ = $1; }
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;
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list:
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'(' items ')'
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{ $$ = $2; }
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| /* empty */
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{ $$ = NULL; }
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;
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items:
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item
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/* Note right recursion. */
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| item ',' items
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{ $1->next = $3; $$ = $1; }
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;
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item:
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STRING
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{ $$ = makenode ($1); }
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;
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%%
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static struct node *
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makenode (s)
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char *s;
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{
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struct node *n;
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n = (struct node *) malloc (sizeof (struct node));
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n->text = s;
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n->next = NULL;
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return n;
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}
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static struct variation *
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makevar (name, inputs, outputs, literals)
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char *name;
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struct node *inputs, *outputs, *literals;
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{
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struct variation *v;
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v = (struct variation *) malloc (sizeof (struct variation));
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v->name = name;
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v->code = ndefs++;
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v->inputs = inputs;
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v->outputs = outputs;
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v->literals = literals;
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v->next = NULL;
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return v;
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}
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static struct def *
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makedef (name, template, vars)
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char *name, *template;
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struct variation *vars;
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{
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struct def *d;
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d = (struct def *) malloc (sizeof (struct def));
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d->basename = name;
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d->template = template;
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d->variations = vars;
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d->next = NULL;
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return d;
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}
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void
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yyerror (s)
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char *s;
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{
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fprintf (stderr, "syntax error in input\n");
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exit (FATAL_EXIT_CODE);
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}
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