diff src/com/go/trove/classfile/InnerClassesAttr.java @ 0:3dc0c5604566

Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
parents
children
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/classfile/InnerClassesAttr.java	Sat Mar 21 11:00:06 2009 +0000
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+/* ====================================================================
+ * 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.util.*;
+import java.io.*;
+
+/******************************************************************************
+ * This class corresponds to the InnerClasses_attribute structure introduced in
+ * JDK1.1. It is not defined in the first edition of 
+ * <i>The Java Virual Machine Specification</i>.
+ * 
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/11/27 <!-- $-->
+ */
+class InnerClassesAttr extends Attribute {
+    private List mInnerClasses = new ArrayList();
+
+    public InnerClassesAttr(ConstantPool cp) {
+        super(cp, INNER_CLASSES);
+    }
+
+    /**
+     * @param inner The full inner class name
+     * @param outer The full outer class name
+     * @param name The simple name of the inner class, or null if anonymous
+     * @param accessFlags Access flags for the inner class
+     */
+    public void addInnerClass(String inner,
+                              String outer,
+                              String name,
+                              AccessFlags accessFlags) {
+        
+        ConstantClassInfo innerInfo = ConstantClassInfo.make(mCp, inner);
+        ConstantClassInfo outerInfo; 
+        if (outer == null) {
+            outerInfo = null;
+        }
+        else {
+            outerInfo = ConstantClassInfo.make(mCp, outer);
+        }
+
+        ConstantUTFInfo nameInfo;
+        if (name == null) {
+            nameInfo = null;
+        }
+        else {
+            nameInfo = ConstantUTFInfo.make(mCp, name);
+        }
+
+        mInnerClasses.add(new Info(innerInfo, outerInfo, nameInfo, 
+                                   accessFlags.getModifier()));
+    }
+
+    public Info[] getInnerClassesInfo() {
+        Info[] infos = new Info[mInnerClasses.size()];
+        return (Info[])mInnerClasses.toArray(infos);
+    }
+
+    public int getLength() {
+        return 2 + 8 * mInnerClasses.size();
+    }
+
+    public void writeDataTo(DataOutput dout) throws IOException {
+        int size = mInnerClasses.size();
+        dout.writeShort(size);
+        for (int i=0; i<size; i++) {
+            ((Info)mInnerClasses.get(i)).writeTo(dout);
+        }
+    }
+
+    static Attribute define(ConstantPool cp,
+                            String name,
+                            int length,
+                            DataInput din) throws IOException {
+
+        InnerClassesAttr innerClasses = new InnerClassesAttr(cp);
+
+        int size = din.readUnsignedShort();
+        for (int i=0; i<size; i++) {
+            int inner_index = din.readUnsignedShort();
+            int outer_index = din.readUnsignedShort();
+            int name_index = din.readUnsignedShort();
+            int af = din.readUnsignedShort();
+            
+            ConstantClassInfo inner;
+            if (inner_index == 0) {
+                inner = null;
+            }
+            else {
+                inner = (ConstantClassInfo)cp.getConstant(inner_index);
+            }
+
+            ConstantClassInfo outer;
+            if (outer_index == 0) {
+                outer = null;
+            }
+            else {
+                outer = (ConstantClassInfo)cp.getConstant(outer_index);
+            }
+            
+            ConstantUTFInfo innerName;
+            if (name_index == 0) {
+                innerName = null;
+            }
+            else {
+                innerName = (ConstantUTFInfo)cp.getConstant(name_index);
+            }
+
+            Info info = new Info(inner, outer, innerName, af);
+            innerClasses.mInnerClasses.add(info);
+        }
+
+        return innerClasses;
+    }
+
+    public static class Info {
+        private ConstantClassInfo mInner;
+        private ConstantClassInfo mOuter;
+        private ConstantUTFInfo mName;
+        private int mAccessFlags;
+
+        Info(ConstantClassInfo inner,
+             ConstantClassInfo outer,
+             ConstantUTFInfo name,
+             int accessFlags) {
+
+            mInner = inner;
+            mOuter = outer;
+            mName = name;
+            mAccessFlags = accessFlags;
+        }
+
+        /**
+         * Returns null if no inner class specified.
+         */
+        public ConstantClassInfo getInnerClass() {
+            return mInner;
+        }
+
+        /**
+         * Returns null if no outer class specified.
+         */
+        public ConstantClassInfo getOuterClass() {
+            return mOuter;
+        }
+
+        /**
+         * Returns null if no inner class specified or is anonymous.
+         */
+        public String getInnerClassName() {
+            if (mName == null) {
+                return null;
+            }
+            else {
+                return mName.getValue();
+            }
+        }
+
+        /**
+         * Returns a copy of the access flags.
+         */
+        public AccessFlags getAccessFlags() {
+            return new AccessFlags(mAccessFlags);
+        }
+
+        public void writeTo(DataOutput dout) throws IOException {
+            if (mInner == null) {
+                dout.writeShort(0);
+            }
+            else {
+                dout.writeShort(mInner.getIndex());
+            }
+
+            if (mOuter == null) {
+                dout.writeShort(0);
+            }
+            else {
+                dout.writeShort(mOuter.getIndex());
+            }
+
+            if (mName == null) {
+                dout.writeShort(0);
+            }
+            else {
+                dout.writeShort(mName.getIndex());
+            }
+            
+            dout.writeShort(mAccessFlags);
+        }
+    }
+}