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/*******************************************************************************
* Copyright (c) 2000, 2009 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.jdt.core;
/**
* A source range defines an element's source coordinates relative to
* its source buffer.
*
* <p>Clients may use the method {@link org.eclipse.jdt.core.SourceRange#isAvailable(ISourceRange)}
* in order to find out if a source range is available. This method returns <code>false</code>
* when the source range offset is equals to <code>-1</code>.</p>
*
* <p>Clients may use the default implementation provided by {@link SourceRange}.</p>
*
* @see SourceRange
* @noimplement This interface is not intended to be implemented by clients.
*/
public interface ISourceRange {
/**
* Returns the number of characters of the source code for this element,
* relative to the source buffer in which this element is contained.
*
* @return the number of characters of the source code for this element,
* relative to the source buffer in which this element is contained
*/
int getLength();
/**
* Returns the 0-based index of the first character of the source code for this element,
* relative to the source buffer in which this element is contained. However, if the element
* has no associated source code, an implementation may return -1.
*
* @return the 0-based index of the first character of the source code for this element,
* relative to the source buffer in which this element is contained. However, if the element
* has no associated source code, an implementation may return -1.
*/
int getOffset();
}