/* * 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 * section 4.4.1 of <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()); } }