diff src/com/go/trove/classfile/ExceptionsAttr.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/ExceptionsAttr.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,124 @@
+/* ====================================================================
+ * 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 Exceptions_attribute structure as defined in
+ * section 4.7.5 of <i>The Java Virtual Machine Specification</i>.
+ * 
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/11/27 <!-- $-->
+ */
+class ExceptionsAttr extends Attribute {
+    private List mExceptions = new ArrayList(2);
+    
+    public ExceptionsAttr(ConstantPool cp) {
+        super(cp, EXCEPTIONS);
+    }
+    
+    public String[] getExceptions() {
+        int size = mExceptions.size();
+        String[] names = new String[size];
+
+        for (int i=0; i<size; i++) {
+            names[i] = ((ConstantClassInfo)mExceptions.get(i)).getClassName();
+        }
+
+        return names;
+    }
+
+    public void addException(ConstantClassInfo type) {
+        mExceptions.add(type);
+    }
+    
+    public int getLength() {
+        return 2 + 2 * mExceptions.size();
+    }
+    
+    public void writeDataTo(DataOutput dout) throws IOException {
+        int size = mExceptions.size();
+        dout.writeShort(size);
+        for (int i=0; i<size; i++) {
+            ConstantClassInfo info = (ConstantClassInfo)mExceptions.get(i);
+            dout.writeShort(info.getIndex());
+        }
+    }
+
+    static Attribute define(ConstantPool cp,
+                            String name,
+                            int length,
+                            DataInput din) throws IOException {
+
+        ExceptionsAttr attr = new ExceptionsAttr(cp);
+        
+        int size = din.readUnsignedShort();
+        length -= 2;
+
+        for (int i=0; i<size; i++) {
+            int index = din.readUnsignedShort();
+            length -= 2;
+            ConstantClassInfo info = (ConstantClassInfo)cp.getConstant(index);
+            attr.addException(info);
+        }
+
+        if (length > 0) {
+            din.skipBytes(length);
+        }
+        
+        return attr;
+    }
+}