//
// Created by Nils on 29.10.2023.
//
#ifndef REG
#define REG

#include <stdio.h>
#include <stdlib.h>

struct reg {
    int* size;
    int* current;
    unsigned int *stack;
};

void printStackR(struct reg stack) {
    printf("Regurn reg\nSize:\t\t%i\nCurrent:\t%i\n", *stack.size, *stack.current);
    for (int i = *stack.current-1; i > 0; --i) {
        printf("||%i||\n", stack.stack[i]);
    }
}

void pushR(struct reg s, unsigned int value) {
    if (*s.current >= *s.size) {
        printf("Stack Overflow\n");
        exit(EXIT_FAILURE);
    }
    s.stack[*s.current] = value;
    *s.current=*s.current + 1;
}

unsigned int popR(struct reg s) {
    if (*s.current == 0) {
        printf("Stack Underflow\n");
        exit(EXIT_FAILURE);
    }
    *s.current = *s.current -1;
    return s.stack[*s.current];
}

unsigned int peekR(struct reg s, int steps) {
    if (*s.current - steps < 0) {
        printf("Stack Underflow\n");
        exit(EXIT_FAILURE);
    }
    return s.stack[*s.current - steps];
}
#endif