#include "stackops.h"

void dropCmd(struct State* state) {
    if (state->mode == EXECUTE) {
        pop(&(state->pile));
    }
}

void dupCmd(struct State* state) {
    if (state->mode == EXECUTE) {
        push(&(state->pile), top(&(state->pile)));
    }
}

void swapCmd(struct State* state) {
    if (state->mode == EXECUTE) {
        struct NumContainer num1;
        struct NumContainer num2;

        getlastnums(&num1, &num2, &(state->pile));
        push(&(state->pile), num2);
        push(&(state->pile), num1);
    }
}

void rotCmd(struct State* state) {
    if (state->mode == EXECUTE) {
        struct NumContainer num1;
        struct NumContainer num2;
        struct NumContainer num3;

        getlastnums(&num1, &num2, &(state->pile));
        num3 = top(&(state->pile));
        pop(&(state->pile));
        push(&(state->pile), num2);
        push(&(state->pile), num1);
        push(&(state->pile), num3);
    }
}