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package org.jruby.ir.instructions;

import org.jruby.ir.Operation;
import org.jruby.ir.operands.Operand;
import org.jruby.ir.operands.Variable;

/*
 * Argument receive in IRExecution scopes.
 */
public abstract class ReceiveArgBase extends Instr implements ResultInstr {
    protected int argIndex;
    protected Variable result;

    public ReceiveArgBase(Operation op, Variable result, int argIndex) {
        super(op);

        assert result != null: "ReceiveArgBase result is null";

        this.argIndex = argIndex;
        this.result = result;
    }

    @Override
    public Operand[] getOperands() {
        return EMPTY_OPERANDS;
    }
    
    public Variable getResult() {
        return result;
    }

    public void updateResult(Variable v) {
        this.result = v;
    }

    public int getArgIndex() {
        return argIndex;
    }

    @Override
    public String toString() {
        return super.toString() + "(" + argIndex + ")";
    }
}