package org.jruby.ir.instructions;
import org.jruby.ir.Operation;
import org.jruby.ir.operands.Fixnum;
import org.jruby.ir.operands.Operand;
import org.jruby.ir.operands.Variable;
import java.util.Map;
// These instructions show up in three contexts:
// - To assign args in parenthesized units: |.., (a,b,c), .. |
// - Regular multiple/parallel assignments: x,y,*z = ...
// - When blocks are inlined, all receive* instructions get
// converted into multiple-assign instructions
public abstract class MultipleAsgnBase extends Instr implements ResultInstr {
protected Variable result;
protected Operand array;
protected final int index;
public MultipleAsgnBase(Operation op, Variable result, Operand array, int index) {
super(op);
assert result != null : "MultipleAsgnBase result is null";
this.result = result;
this.array = array;
this.index = index;
}
@Override
public Operand[] getOperands() {
return new Operand[]{array, new Fixnum(index) };
}
public Operand getArrayArg() {
return array;
}
@Override
public Variable getResult() {
return result;
}
public int getIndex() {
return index;
}
@Override
public void updateResult(Variable v) {
this.result = v;
}
@Override
public void simplifyOperands(Map<Operand, Operand> valueMap, boolean force) {
array = array.getSimplifiedOperand(valueMap, force);
}
}