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/* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
*
* This program and the accompanying materials are made available under
* the terms of the Common Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/cpl-v10.html
*
* $Id: InnerClassesAttribute_info.java,v 1.1.1.1 2004/05/09 16:57:48 vlad_r Exp $
*/
package com.vladium.jcd.cls.attribute;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import com.vladium.jcd.lib.UDataInputStream;
import com.vladium.jcd.lib.UDataOutputStream;
// ----------------------------------------------------------------------------
/**
* @author Vlad Roubtsov, (C) 2003
*/
public
final class InnerClassesAttribute_info extends Attribute_info
{
// public: ................................................................
// ACCESSORS:
public boolean makesClassNested (final int class_index, final int [] nestedAccessFlags)
{
if (class_index > 0)
{
// TODO: avoid linear loop by keeping all class indices in a bitset
for (int i = 0, iLimit = size (); i < iLimit; ++ i)
{
final InnerClass_info info = get (i);
if (info.m_inner_class_index == class_index)
{
nestedAccessFlags [0] = info.m_inner_access_flags;
return true;
}
}
}
return false;
}
/**
* Returns {@link InnerClass_info} descriptor at a given offset.
*
* @param offset inner class entry offset [must be in [0, size()) range;
* input not checked]
* @return InnerClass_info descriptor [never null]
*
* @throws IndexOutOfBoundsException if 'offset' is outside of valid range
*/
public final InnerClass_info get (final int offset)
{
return (InnerClass_info) m_classes.get (offset);
}
/**
* Returns the number of descriptors in this collection [can be 0].
*/
public final int size ()
{
return m_classes.size ();
}
public final long length ()
{
return 8 + (m_classes.size () << 3); // use size() if class becomes non-final
}
// Visitor:
public void accept (final IAttributeVisitor visitor, final Object ctx)
{
visitor.visit (this, ctx);
}
public String toString ()
{
final StringBuffer s = new StringBuffer ("InnerClassesAttribute_info: [attribute_name_index = " + m_name_index + ", attribute_length = " + length () + "]\n");
for (int l = 0; l < size (); ++ l)
{
s.append (" " + get (l));
s.append ("\n"); // TODO: proper EOL const
}
return s.toString ();
}
// Cloneable:
/**
* Performs a deep copy.
*/
public Object clone ()
{
final InnerClassesAttribute_info _clone = (InnerClassesAttribute_info) super.clone ();
final List/* InnerClass_info */ classes = m_classes;
// do deep copy:
final int class_count = classes.size (); // use size() if class becomes non-final
_clone.m_classes = new ArrayList (class_count);
for (int e = 0; e < class_count; ++ e)
{
_clone.m_classes.add (((InnerClass_info) classes.get (e)).clone ());
}
return _clone;
}
// IClassFormatOutput:
public void writeInClassFormat (final UDataOutputStream out) throws IOException
{
super.writeInClassFormat (out);
final List/* InnerClass_info */ classes = m_classes;
final int class_count = classes.size (); // use size() if class becomes non-final
out.writeU2 (class_count);
for (int l = 0; l < class_count; ++ l)
{
((InnerClass_info) classes.get (l)).writeInClassFormat (out);
}
}
// protected: .............................................................
// package: ...............................................................
InnerClassesAttribute_info (final int attribute_name_index, final long attribute_length,
final UDataInputStream bytes)
throws IOException
{
super (attribute_name_index, attribute_length);
final int class_count = bytes.readU2 ();
final List/* InnerClass_info */ classes = new ArrayList (class_count);
for (int i = 0; i < class_count; ++ i)
{
classes.add (new InnerClass_info (bytes));
}
m_classes = classes;
}
// private: ...............................................................
private List/* InnerClass_info */ m_classes; // never null
} // end of class
// ----------------------------------------------------------------------------
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