/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Common Public License (CPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/cpl1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.compilers.opt.ir;
import org.jikesrvm.VM;
import org.jikesrvm.classloader.VM_Method;
import org.jikesrvm.classloader.VM_TypeReference;
/**
* Represents a constant code operand, found for example, from an
* OPT_TIBConstantOperand. NB we don't use an object constant operand
* because: 1) code doesn't form part of the object literals 2) we
* need to support replacement
*
* @see OPT_Operand
*/
public final class OPT_CodeConstantOperand extends OPT_ConstantOperand {
/**
* The non-null method for the code represent
*/
public final VM_Method value;
/**
* Construct a new code constant operand
*
* @param v the method of this TIB
*/
public OPT_CodeConstantOperand(VM_Method v) {
if (VM.VerifyAssertions) VM._assert(v != null);
value = v;
}
/**
* Return a new operand that is semantically equivalent to <code>this</code>.
*
* @return a copy of <code>this</code>
*/
public OPT_Operand copy() {
return new OPT_CodeConstantOperand(value);
}
/**
* Return the {@link VM_TypeReference} of the value represented by the operand.
*
* @return VM_TypeReference.JavaLangObjectArray
*/
public VM_TypeReference getType() {
return VM_TypeReference.CodeArray;
}
/**
* Does the operand represent a value of the reference data type?
*
* @return <code>true</code>
*/
public boolean isRef() {
return true;
}
/**
* Are two operands semantically equivalent?
*
* @param op other operand
* @return <code>true</code> if <code>this</code> and <code>op</code>
* are semantically equivalent or <code>false</code>
* if they are not.
*/
public boolean similar(OPT_Operand op) {
return (op instanceof OPT_CodeConstantOperand) && value == ((OPT_CodeConstantOperand) op).value;
}
/**
* Returns the string representation of this operand.
*
* @return a string representation of this operand.
*/
public String toString() {
return "code \"" + value + "\"";
}
}