%{
#include <stdio.h>

#include "expr.h"

extern int yylex(void);
extern int yyerror(const char *s);

static void breakpoint(void) { }
%}

%token INTEGER
%token STRING
%token '(' ')'
%left MATCH MULTIPLICATION 
%left '+' '-'
%left COMPARISON AND OR

%start expr

%%

expr	: STRING {
		printf("string\n");
	}

	| INTEGER {
		printf("integer %d\n", $1.u.i);
	}
	
	| '(' expr ')' {
		printf("a parenthesized expression\n");
	}

	| expr MATCH expr {
		printf("match two\n");
	}

	| expr MULTIPLICATION expr {
		printf("multiplicationish\n");
	}

	| expr '+' expr {
		printf("plus\n");
		$$.u.i = $1.u.i + $3.u.i;
		printf("%d\n", $$.u.i);
	}

	| expr '-' expr {
		printf("minus\n");
	}

	| expr COMPARISON expr {
		printf("compare\n");
	}

	| expr AND expr {
		printf("and\n");
	}

	| expr OR expr {
		printf("or\n");
	}
	;