org.eclipse.text.edits.DeleteEdit Maven / Gradle / Ivy

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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.text.edits;

import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;

/**
 * Text edit to delete a range in a document.
 * 
 * A delete edit is equivalent to ReplaceEdit(
 * offset, length, "").
 *
 * @since 3.0
 */
public final class DeleteEdit extends TextEdit {

	/**
	 * Constructs a new delete edit.
	 *
	 * @param offset the offset of the range to replace
	 * @param length the length of the range to replace
	 */
	public DeleteEdit(int offset, int length) {
		super(offset, length);
	}

	/*
	 * Copy constructor
	 */
	private DeleteEdit(DeleteEdit other) {
		super(other);
	}

	@Override
	protected TextEdit doCopy() {
		return new DeleteEdit(this);
	}

	@Override
	protected void accept0(TextEditVisitor visitor) {
		boolean visitChildren= visitor.visit(this);
		if (visitChildren) {
			acceptChildren(visitor);
		}
	}

	@Override
	int performDocumentUpdating(IDocument document) throws BadLocationException {
		document.replace(getOffset(), getLength(), ""); //$NON-NLS-1$
		fDelta= -getLength();
		return fDelta;
	}

	@Override
	boolean deleteChildren() {
		return true;
	}
}