/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* 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/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.compilers.opt.ir.operand;
import java.util.Arrays;
/**
* An OsrTypeInfoOperand object keeps type information of locals
* and stacks at a byte code index.
*/
public final class OsrTypeInfoOperand extends Operand {
/**
* The data type.
*/
public byte[] localTypeCodes;
public byte[] stackTypeCodes;
public OsrTypeInfoOperand(byte[] ltcodes, byte[] stcodes) {
this.localTypeCodes = ltcodes;
this.stackTypeCodes = stcodes;
}
@Override
public Operand copy() {
return new OsrTypeInfoOperand(localTypeCodes, stackTypeCodes);
}
@Override
public boolean similar(Operand op) {
boolean result = true;
if (!(op instanceof OsrTypeInfoOperand)) {
return false;
}
OsrTypeInfoOperand other = (OsrTypeInfoOperand) op;
result =
Arrays.equals(this.localTypeCodes, other.localTypeCodes) &&
Arrays.equals(this.stackTypeCodes, other.stackTypeCodes);
return result;
}
/**
* Returns the string representation of this operand.
*
* @return a string representation of this operand.
*/
@Override
public String toString() {
StringBuilder buf = new StringBuilder("OsrTypeInfo(");
for (int i = 0, n = localTypeCodes.length; i < n; i++) {
buf.append((char) localTypeCodes[i]);
}
buf.append(",");
for (int i = 0, n = stackTypeCodes.length; i < n; i++) {
buf.append((char) stackTypeCodes[i]);
}
buf.append(")");
return buf.toString();
}
}