#include <objc/objc.h>
#include <objc/Object.h>
#include <string.h>
#include "../stack/stack.h"
#include "data.h"

void getOperands(id stack, long operands[2])
{
	operands[0] = [[stack getObject] getData];
	[stack popObject];
	operands[1] = [[stack getObject] getData];
	[stack popObject];
}

int main(int argc, char *argv[])
{
	int i=1;
	long operands[2];
	id stack, data;
	if(argc<2) {
		printf("Expression!!\n");
		return 0;
	}
	stack = [[Stack alloc] init];
	data = [[Data alloc] init];
	while(argv[i]) {
		if(strcmp(argv[i], "+")==0) {
			getOperands(stack, operands);
			[data setData: operands[0] + operands[1]];
			[stack pushObject: data];
		} else if(strcmp(argv[i], "-") == 0) {
			getOperands(stack, operands);
			[data setData: operands[0] - operands[1]];
			[stack pushObject: data];
		} else if(strcmp(argv[i], "*") == 0) {
			getOperands(stack, operands);
			[data setData: operands[0] * operands[1]];
			[stack pushObject: data];
		} else if(strcmp(argv[i], "/") == 0) {
			getOperands(stack, operands);
			[data setData: operands[0] / operands[1]];
			[stack pushObject: data];
		} else {
			[data setData:atol(argv[i])]; 
			[stack pushObject: data];
		}
		i++;
	}
	printf("Remaining Value is %i.\n", [[stack getObject] getData]);
	[stack free];
}