mirror of
https://github.com/pmret/gcc-papermario.git
synced 2024-11-09 12:22:38 +01:00
170 lines
3.2 KiB
Plaintext
170 lines
3.2 KiB
Plaintext
/* Bytecode definition file parser.
|
|
Copyright (C) 1993 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
|
|
%{
|
|
|
|
#include <stdio.h>
|
|
#include "hconfig.h"
|
|
#include "bi-defs.h"
|
|
|
|
extern char yytext[];
|
|
extern int yyleng;
|
|
|
|
|
|
/* Chain of all defs built by the parser. */
|
|
struct def *defs;
|
|
int ndefs;
|
|
|
|
static struct node *makenode ();
|
|
static struct variation *makevar ();
|
|
static struct def *makedef ();
|
|
|
|
void yyerror ();
|
|
|
|
%}
|
|
|
|
%union
|
|
{
|
|
char *string;
|
|
struct def *def;
|
|
struct variation *variation;
|
|
struct node *node;
|
|
}
|
|
|
|
%token <string> DEFOP STRING
|
|
%type <string> opt_string
|
|
%type <def> defs def
|
|
%type <variation> variations variation
|
|
%type <node> list items item
|
|
|
|
%%
|
|
|
|
top:
|
|
defs
|
|
{ defs = $1; }
|
|
;
|
|
|
|
defs:
|
|
def
|
|
| defs def
|
|
{ $2->next = $1; $$ = $2; }
|
|
;
|
|
|
|
def:
|
|
DEFOP '(' STRING ',' opt_string ',' '(' variations ')' ')'
|
|
{ $$ = makedef ($3, $5, $8); }
|
|
;
|
|
|
|
variations:
|
|
variation
|
|
| variations ',' variation
|
|
{ $3->next = $1; $$ = $3; }
|
|
;
|
|
|
|
variation:
|
|
'(' opt_string ')'
|
|
{ $$ = makevar ($2, (struct node *) NULL, (struct node *) NULL, (struct node *) NULL); }
|
|
| '(' opt_string ',' list ')'
|
|
{ $$ = makevar ($2, $4, (struct node *) NULL, (struct node *) NULL); }
|
|
| '(' opt_string ',' list ',' list ')'
|
|
{ $$ = makevar ($2, $4, $6, (struct node *) NULL); }
|
|
| '(' opt_string ',' list ',' list ',' list ')'
|
|
{ $$ = makevar ($2, $4, $6, $8); }
|
|
;
|
|
|
|
opt_string:
|
|
/* empty */ { $$ = ""; }
|
|
| STRING { $$ = $1; }
|
|
;
|
|
|
|
list:
|
|
'(' items ')'
|
|
{ $$ = $2; }
|
|
| /* empty */
|
|
{ $$ = NULL; }
|
|
;
|
|
|
|
items:
|
|
item
|
|
/* Note right recursion. */
|
|
| item ',' items
|
|
{ $1->next = $3; $$ = $1; }
|
|
;
|
|
|
|
item:
|
|
STRING
|
|
{ $$ = makenode ($1); }
|
|
;
|
|
|
|
%%
|
|
|
|
static struct node *
|
|
makenode (s)
|
|
char *s;
|
|
{
|
|
struct node *n;
|
|
|
|
n = (struct node *) malloc (sizeof (struct node));
|
|
n->text = s;
|
|
n->next = NULL;
|
|
return n;
|
|
}
|
|
|
|
static struct variation *
|
|
makevar (name, inputs, outputs, literals)
|
|
char *name;
|
|
struct node *inputs, *outputs, *literals;
|
|
{
|
|
struct variation *v;
|
|
|
|
v = (struct variation *) malloc (sizeof (struct variation));
|
|
v->name = name;
|
|
v->code = ndefs++;
|
|
v->inputs = inputs;
|
|
v->outputs = outputs;
|
|
v->literals = literals;
|
|
v->next = NULL;
|
|
return v;
|
|
}
|
|
|
|
static struct def *
|
|
makedef (name, template, vars)
|
|
char *name, *template;
|
|
struct variation *vars;
|
|
{
|
|
struct def *d;
|
|
|
|
d = (struct def *) malloc (sizeof (struct def));
|
|
d->basename = name;
|
|
d->template = template;
|
|
d->variations = vars;
|
|
d->next = NULL;
|
|
return d;
|
|
}
|
|
|
|
void
|
|
yyerror (s)
|
|
char *s;
|
|
{
|
|
fprintf (stderr, "syntax error in input\n");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|