ruler/parser.y at master · tudurom/ruler · GitHub

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%{
#include <stdio.h>
#include <string.h>

#include "ruler.h"

#define YYSTYPE char *
%}

%token CRITERION EQUALS STRING NEWLINE COMMAND END
%start block_list
%defines
%error-verbose

%%
block_list: block
		  | block_list NEWLINE
		  | block_list block
		  | block_list END
		  { return 0; }
		  ;

block: descriptor_list command
	 {
	 	block();
	 }
	 ;

descriptor_list: descriptor
			   | descriptor_list descriptor
			   | descriptor_list NEWLINE
			   ;

command: COMMAND
	   {
	   	comm($1);
	   }
	   ;

descriptor: CRITERION EQUALS STRING
		  {
		  	desc($1, $3);
		  }
		  ;
%%

void
yyerror(const char *str)
{
	fprintf(stderr, "error: %s\n", str);
}

int
yywrap()
{
	return 1;
}