1#include "cotton.h"
 2#include <stdio.h>
 3
 4void cotton_init
 5(Cotton *c) 
 6{
 7    c->stack_p = 0;
 8    c->jmp_stack_p = 0;
 9    c->instruct_p = 0;
10    c->mem_len = 0;
11
12    for (int i = 0; i < VARS_SIZE; i++) {
13        
14        c->vars[i] = 0;
15    }
16}
17
18void push
19(Cotton *c, int v) 
20{
21    if (c->stack_p >= STACK_SIZE) {
22        
23        fprintf(stderr, "cotton: stack overflow,., like the website,.., :<\n");
24        return;
25    }
26
27    c->stack[c->stack_p++] = v;
28}
29
30int pop
31(Cotton *c) 
32{
33    if (c->stack_p <= 0) {
34
35        fprintf(stderr, "cotton: stack underflow :<\n"); 
36        return 0;
37    }
38
39    return c->stack[--c->stack_p];
40}