/*
* Copyright 2004-2010 Brian S O'Neill
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.cojen.classfile.constant;
import java.io.DataOutput;
import java.io.IOException;
import org.cojen.classfile.ConstantInfo;
import org.cojen.classfile.ConstantPool;
import org.cojen.classfile.TypeDesc;
/**
* This class corresponds to the CONSTANT_Class_info structure as defined in
* <i>The Java Virtual Machine Specification</i>.
*
* @author Brian S O'Neill
*/
public class ConstantClassInfo extends ConstantInfo {
private final TypeDesc mType;
private final ConstantUTFInfo mNameConstant;
public ConstantClassInfo(ConstantUTFInfo nameConstant) {
super(TAG_CLASS);
String name = nameConstant.getValue();
if (!name.endsWith(";") && !name.startsWith("[")) {
mType = TypeDesc.forClass(name);
} else {
mType = TypeDesc.forDescriptor(name);
}
mNameConstant = nameConstant;
}
public ConstantClassInfo(ConstantPool cp, String className) {
super(TAG_CLASS);
String desc = className.replace('.', '/');
mType = TypeDesc.forClass(className);
mNameConstant = cp.addConstantUTF(desc);
}
/**
* Used to describe an array class.
*/
public ConstantClassInfo(ConstantPool cp, String className, int dim) {
super(TAG_CLASS);
TypeDesc type = TypeDesc.forClass(className);
String desc;
if (dim > 0) {
while (--dim >= 0) {
type = type.toArrayType();
}
desc = type.getDescriptor();
} else {
desc = className.replace('.', '/');
}
mType = type;
mNameConstant = cp.addConstantUTF(desc);
}
public ConstantClassInfo(ConstantPool cp, TypeDesc type) {
super(TAG_CLASS);
String desc;
if (type.isArray()) {
desc = type.getDescriptor();
} else {
desc = type.getRootName().replace('.', '/');
}
mType = type;
mNameConstant = cp.addConstantUTF(desc);
}
public TypeDesc getType() {
return mType;
}
public int hashCode() {
return mType.hashCode();
}
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof ConstantClassInfo) {
ConstantClassInfo other = (ConstantClassInfo)obj;
return mType.equals(other.mType);
}
return false;
}
public void writeTo(DataOutput dout) throws IOException {
super.writeTo(dout);
dout.writeShort(mNameConstant.getIndex());
}
public String toString() {
return "CONSTANT_Class_info: ".concat(getType().getFullName());
}
}