org.eclipse.jface.text.TypedPosition 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, 2008 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.jface.text;


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

	@Override
	public boolean equals(Object o) {
		if (o instanceof TypedPosition) {
			if (super.equals(o)) {
				TypedPosition p= (TypedPosition) o;
				return (fType == null && p.getType() == null) || fType.equals(p.getType());
			}
		}
		return false;
	}

	@Override
	public int hashCode() {
	 	int type= fType == null ? 0 : fType.hashCode();
	 	return super.hashCode() | type;
	 }

	@Override
	public String toString() {
		return fType + " - " + super.toString(); //$NON-NLS-1$
	}
}