Mercurial > hg > blitz_condensed
diff src/com/go/trove/classfile/ConstantClassInfo.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/com/go/trove/classfile/ConstantClassInfo.java Sat Mar 21 11:00:06 2009 +0000 @@ -0,0 +1,204 @@ +/* ==================================================================== + * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group + * ==================================================================== + * The Tea Software License, Version 1.1 + * + * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The end-user documentation included with the redistribution, + * if any, must include the following acknowledgment: + * "This product includes software developed by the + * Walt Disney Internet Group (http://opensource.go.com/)." + * Alternately, this acknowledgment may appear in the software itself, + * if and wherever such third-party acknowledgments normally appear. + * + * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must + * not be used to endorse or promote products derived from this + * software without prior written permission. For written + * permission, please contact opensource@dig.com. + * + * 5. Products derived from this software may not be called "Tea", + * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", + * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior + * written permission of the Walt Disney Internet Group. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * For more information about Tea, please see http://opensource.go.com/. + */ + +package com.go.trove.classfile; + +import java.io.*; + +/****************************************************************************** + * 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 + * @version + * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/05/14 <!-- $--> + */ +public class ConstantClassInfo extends ConstantInfo { + private String mClassName; + private int mDim; + private TypeDescriptor mType; + + private ConstantUTFInfo mNameConstant; + + /** + * Will return either a new ConstantClassInfo object or one already in + * the constant pool. If it is a new ConstantClassInfo, it will be inserted + * into the pool. + */ + static ConstantClassInfo make(ConstantPool cp, String className) { + ConstantInfo ci = new ConstantClassInfo(cp, className); + return (ConstantClassInfo)cp.addConstant(ci); + } + + /** Used to describe an array class. */ + static ConstantClassInfo make(ConstantPool cp, + String className, int dim) { + ConstantInfo ci = new ConstantClassInfo(cp, className, dim); + return (ConstantClassInfo)cp.addConstant(ci); + } + + static ConstantClassInfo make(ConstantPool cp, + TypeDescriptor type) { + ConstantInfo ci = new ConstantClassInfo(cp, type); + return (ConstantClassInfo)cp.addConstant(ci); + } + + ConstantClassInfo(ConstantUTFInfo nameConstant) { + super(TAG_CLASS); + mNameConstant = nameConstant; + String name = nameConstant.getValue(); + if (!name.endsWith(";") && !name.startsWith("[")) { + mClassName = name.replace('/', '.'); + mDim = 0; + } + else { + TypeDescriptor desc = TypeDescriptor.parseTypeDesc(name); + mClassName = desc.getClassName(); + mDim = desc.getDimensions(); + } + } + + private ConstantClassInfo(ConstantPool cp, String className) { + super(TAG_CLASS); + + mClassName = className; + mDim = 0; + + String desc = className.replace('.', '/'); + mNameConstant = ConstantUTFInfo.make(cp, desc); + } + + /** Used to describe an array class. */ + private ConstantClassInfo(ConstantPool cp, String className, int dim) { + super(TAG_CLASS); + + mClassName = className; + mDim = dim; + + String desc; + if (dim > 0) { + desc = TypeDescriptor.generate(className, dim); + } + else { + desc = className.replace('.', '/'); + } + + mNameConstant = ConstantUTFInfo.make(cp, desc); + } + + private ConstantClassInfo(ConstantPool cp, TypeDescriptor type) { + super(TAG_CLASS); + + mClassName = type.getClassName(); + mDim = type.getDimensions(); + mType = type; + + String desc; + if (mDim > 0) { + desc = type.toString(); + } + else { + desc = type.getClassName().replace('.', '/'); + } + + mNameConstant = ConstantUTFInfo.make(cp, desc); + } + + public String getClassName() { + return mClassName; + } + + public int getDimensions() { + return mDim; + } + + public TypeDescriptor getTypeDescriptor() { + if (mType == null) { + mType = new TypeDescriptor(getClassName()); + + int dim = getDimensions(); + if (dim > 0) { + mType = new TypeDescriptor(mType, dim); + } + } + + return mType; + } + + public int hashCode() { + return mClassName.hashCode(); + } + + public boolean equals(Object obj) { + if (obj instanceof ConstantClassInfo) { + ConstantClassInfo other = (ConstantClassInfo)obj; + return mClassName.equals(other.mClassName) && mDim == other.mDim; + } + + return false; + } + + public void writeTo(DataOutput dout) throws IOException { + super.writeTo(dout); + dout.writeShort(mNameConstant.getIndex()); + } + + public String toString() { + StringBuffer buf = new StringBuffer("CONSTANT_Class_info: "); + buf.append(getClassName()); + for (int i = getDimensions(); i > 0; i--) { + buf.append('['); + buf.append(']'); + } + return buf.toString(); + } +}