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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: FieldCollection.java,v 1.1.1.1 2004/05/09 16:57:45 vlad_r Exp $
*/
package com.vladium.jcd.cls;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import com.vladium.jcd.lib.UDataOutputStream;
import com.vladium.util.IntVector;
// ----------------------------------------------------------------------------
/**
* @author (C) 2001, Vlad Roubtsov
*/
final class FieldCollection implements IFieldCollection
{
// public: ................................................................
// ACCESSORS:
public Field_info get (final int offset)
{
return (Field_info) m_fields.get (offset);
}
public int [] get (final ClassDef cls, final String name)
{
if (cls == null) throw new IllegalArgumentException ("null input: cls");
// TODO: hash impl [not possible without having access to the parent ClassDef]
final int count = m_fields.size (); // use size() if class becomes non-final
final IntVector result = new IntVector (count);
for (int f = 0; f < count; ++ f)
{
final Field_info field = (Field_info) m_fields.get (f);
if (field.getName (cls).equals (name))
result.add (f);
}
return result.values (); // IntVector optimizes for the empty case
}
public int size ()
{
return m_fields.size ();
}
// Cloneable:
/**
* Performs a deep copy.
*/
public Object clone ()
{
try
{
final FieldCollection _clone = (FieldCollection) super.clone ();
// deep clone:
final int fields_count = m_fields.size (); // use size() if class becomes non-final
_clone.m_fields = new ArrayList (fields_count);
for (int f = 0; f < fields_count; ++ f)
{
_clone.m_fields.add (((Field_info) m_fields.get (f)).clone ());
}
return _clone;
}
catch (CloneNotSupportedException e)
{
throw new InternalError (e.toString ());
}
}
// IClassFormatOutput:
public void writeInClassFormat (final UDataOutputStream out) throws IOException
{
final int fields_count = m_fields.size (); // use size() if class becomes non-final
out.writeU2 (fields_count);
for (int i = 0; i < fields_count; i++)
{
get (i).writeInClassFormat (out);
}
}
// Visitor:
public void accept (final IClassDefVisitor visitor, final Object ctx)
{
visitor.visit (this, ctx);
}
// MUTATORS:
public int add (final Field_info field)
{
final int newoffset = m_fields.size (); // use size() if class becomes non-final
m_fields.add (field);
return newoffset;
}
public Field_info set (final int offset, final Field_info field)
{
return (Field_info) m_fields.set (offset, field);
}
// protected: .............................................................
// package: ...............................................................
FieldCollection (final int capacity)
{
m_fields = capacity < 0 ? new ArrayList () : new ArrayList (capacity);
}
// private: ...............................................................
private List/* Field_info */ m_fields; // never null
} // end of class
// ----------------------------------------------------------------------------
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