#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "evalexp.h"

struct env {
	char var[8];
	int value;
	struct env *next;
};

int evalexpenv(struct exp *e, struct env *env) {
	return 0;
}

int evalexp(struct exp *e) {
	int ans = 0;
	if ((e->tag) == isvar) {
		printf("E = variable which is %s\n", (e->var));
		return ans;
	}
	if ((e->tag) == isconstant) {
		printf("E = constant which is %d\n", (e->constant));
		return (e->constant);
	}
	if ((e->tag) == isopapp) {
		if ((e->op) == isplus) {
			printf("E = operator application '+' \n");
		}
		else {
			printf("E = operator application 'x' \n");
		}



	}
	if ((e->tag) == islet) {
		printf("E = let '%s' equal to...\n", (e->bvar));
	}
	return ans;
}