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/*******************************************************************************
* Copyright (c) 2000, 2006 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
*******************************************************************************/
package org.eclipse.text.edits;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
/**
* A <code>CopyingRangeMarker</code> can be used to track positions when executing
* text edits. Additionally a copying range marker stores a local copy of the
* text it captures when it gets executed.
*
* @since 3.0
*/
public final class CopyingRangeMarker extends TextEdit {
private String fText;
/**
* Creates a new <tt>CopyRangeMarker</tt> for the given
* offset and length.
*
* @param offset the marker's offset
* @param length the marker's length
*/
public CopyingRangeMarker(int offset, int length) {
super(offset, length);
}
/*
* Copy constructor
*/
private CopyingRangeMarker(CopyingRangeMarker other) {
super(other);
fText= other.fText;
}
@Override
protected TextEdit doCopy() {
return new CopyingRangeMarker(this);
}
@Override
protected void accept0(TextEditVisitor visitor) {
boolean visitChildren= visitor.visit(this);
if (visitChildren) {
acceptChildren(visitor);
}
}
@Override
int performDocumentUpdating(IDocument document) throws BadLocationException {
fText= document.get(getOffset(), getLength());
fDelta= 0;
return fDelta;
}
@Override
boolean deleteChildren() {
return false;
}
}
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