xref: /csrg-svn/old/htable/parse.y (revision 8734)

%{
#ifndef lint
static char sccsid[] = "@(#)parse.y	4.1 (Berkeley) 10/20/82";
#endif

#include "htable.h"
%}

%union {
	int	number;
	struct	addr *addrlist;
	struct	name *namelist;
}
%start Table

%token			END
%token <number>		NUMBER KEYWORD
%token <namelist>	NAME

%type <namelist>	Names Cputype Opsys Protos Proto
%type <addrlist>	Addresses Address
%%
Table	:	Entry
	|	Table Entry
	;

Entry	:	KEYWORD ':' Addresses ':' Names ':' END
	= {
		do_entry($1, $3, $5, NONAME, NONAME, NONAME);
	}
	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' END
	= {
		do_entry($1, $3, $5, $7, NONAME, NONAME);
	}
	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' END
	= {
		do_entry($1, $3, $5, $7, $9, NONAME);
	}
	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' ':' END
	= {
		do_entry($1, $3, $5, $7, $9, NONAME);
	}
	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' Protos ':' END
	= {
		do_entry($1, $3, $5, $7, $9, $11);
	}
	|	error END
	|	END		/* blank line */
	;

Addresses:	Address
	= {
		$$ = $1;
	}
	|	Address ',' Addresses
	= {
		$1->addr_link = $3;
		$$ = $1;
	}
	;

Address	:	NUMBER '.' NUMBER '.' NUMBER '.' NUMBER
	= {
		$$ = alloc_addr();
		$$->addr_val = ($1) | ($3 << 8) | ($5 << 16) | ($7 << 24);
		$$->addr_link = NOADDR;
	}
	;

Names	:	NAME
	= {
		$$ = $1;
	}
	|	NAME ',' Names
	= {
		$1->name_link = $3;
		$$ = $1;
	}
	;

Cputype :	/* empty */
	= {
		$$ = NONAME;
	}
	|	NAME
	= {
		$$ = $1;
	}
	;

Opsys	:	/* empty */
	= {
		$$ = NONAME;
	}
	|	NAME
	= {
		$$ = $1;
	}
	;

Protos	:	Proto
	= {
		$$ = $1;
	}
	|	Proto ',' Protos
	= {
		$1->name_link = $3;
		$$ = $1;
	}
	;

Proto	:	NAME
	= {
		$$ = $1;
	}
	;
%%

#include <stdio.h>

extern int yylineno;

yyerror(msg)
	char *msg;
{
	fprintf(stderr, "\"%s\", line %d: %s\n", infile, yylineno, msg);
}