/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 * Port to the D programming language:
 *     Frank Benoit <benoit@tionex.de>
 *******************************************************************************/
module org.eclipse.jface.text.TypedPosition;
import org.eclipse.jface.text.IRepairableDocument;
import org.eclipse.jface.text.AbstractDocument;
import org.eclipse.jface.text.IDocumentPartitionerExtension3;
import org.eclipse.jface.text.ConfigurableLineTracker;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.TypedRegion;
import org.eclipse.jface.text.IDocumentExtension2;
import org.eclipse.jface.text.RewriteSessionEditProcessor;
import org.eclipse.jface.text.SlaveDocumentEvent;
import org.eclipse.jface.text.IDocumentExtension3;
import org.eclipse.jface.text.IDocumentListener;
import org.eclipse.jface.text.ISynchronizable;
import org.eclipse.jface.text.DocumentEvent;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.IRepairableDocumentExtension;
import org.eclipse.jface.text.DocumentRewriteSessionType;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.IDocumentExtension4;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.TextMessages;
import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2;
import org.eclipse.jface.text.IDocumentInformationMappingExtension;
import org.eclipse.jface.text.IDocumentPartitioningListenerExtension;
import org.eclipse.jface.text.ITextStore;
import org.eclipse.jface.text.IDocumentPartitionerExtension;
import org.eclipse.jface.text.DocumentRewriteSession;
import org.eclipse.jface.text.IPositionUpdater;
import org.eclipse.jface.text.ISlaveDocumentManagerExtension;
import org.eclipse.jface.text.ILineTracker;
import org.eclipse.jface.text.ListLineTracker;
import org.eclipse.jface.text.IDocumentInformationMapping;
import org.eclipse.jface.text.IDocumentRewriteSessionListener;
import org.eclipse.jface.text.Assert;
import org.eclipse.jface.text.AbstractLineTracker;
import org.eclipse.jface.text.DefaultLineTracker;
import org.eclipse.jface.text.BadPositionCategoryException;
import org.eclipse.jface.text.BadPartitioningException;
import org.eclipse.jface.text.SequentialRewriteTextStore;
import org.eclipse.jface.text.IDocumentInformationMappingExtension2;
import org.eclipse.jface.text.DocumentPartitioningChangedEvent;
import org.eclipse.jface.text.FindReplaceDocumentAdapter;
import org.eclipse.jface.text.TextUtilities;
import org.eclipse.jface.text.ISlaveDocumentManager;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ILineTrackerExtension;
import org.eclipse.jface.text.IDocumentPartitioner;
import org.eclipse.jface.text.GapTextStore;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocumentExtension;
import org.eclipse.jface.text.IDocumentPartitioningListener;
import org.eclipse.jface.text.CopyOnWriteTextStore;
import org.eclipse.jface.text.DefaultPositionUpdater;
import org.eclipse.jface.text.Line;
import org.eclipse.jface.text.DocumentRewriteSessionEvent;
import org.eclipse.jface.text.IDocumentPartitionerExtension2;
import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.jface.text.TreeLineTracker;



import java.lang.all;
import java.util.Set;


/**
 * Convenience class for positions that have a type, similar to
 * {@link org.eclipse.jface.text.ITypedRegion}.
 * <p>
 * As {@link org.eclipse.jface.text.Position},<code>TypedPosition</code> can
 * not be used as key in hash tables as it overrides <code>equals</code> and
 * <code>hashCode</code> as it would be a value object.
 */
public class TypedPosition : Position {

    /** The type of the region described by this position */
    private String fType;

    /**
     * Creates a position along the given specification.
     *
     * @param offset the offset of this position
     * @param length the length of this position
     * @param type the content type of this position
     */
    public this(int offset, int length, String type) {
        super(offset, length);
        fType= type;
    }

    /**
     * Creates a position based on the typed region.
     *
     * @param region the typed region
     */
    public this(ITypedRegion region) {
        super(region.getOffset(), region.getLength());
        fType= region.getType();
    }

    /**
     * Returns the content type of the region.
     *
     * @return the content type of the region
     */
    public String getType() {
        return fType;
    }

    /*
     * @see java.lang.Object#equals(java.lang.Object)
     */
    public override int opEquals(Object o) {
        if ( cast(TypedPosition)o ) {
            if (super.opEquals(o)) {
                TypedPosition p= cast(TypedPosition) o;
                return (fType is null && p.getType() is null) || fType.equals(p.getType());
            }
        }
        return false;
    }

     /*
     * @see java.lang.Object#hashCode()
     */
    public override hash_t toHash() {
        int type= fType is null ? 0 : .toHash(fType);
        return super.toHash() | type;
     }
}