package hatelace.instructions;

import hatelace.*;

public class JumpEq extends Instruction {
    private int index;
    private Address src;
    private Word imm;

    /** Conditional jump */
    public JumpEq(int index, Address src, Word imm) {
        this.index = index;
        this.src = src;
        this.imm = imm;
    }

    public void execute(Memory memory, ProgramCounter PC) {
        if (this.imm.equals(memory.read(this.src))) {
            PC.setPC(this.index);
        } else {
            PC.incPC();
        }
    }

    protected String opcode() {
        return "JEQ";
    }

    protected Object[] operands() {
        return new Object[] {this.index, this.src, this.imm};
    }

    public String toString() {
        return String.format("%s %s [%s] %s", this.opcode(), this.index, this.src, this.imm);
    }
}