/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.sdt.sourcegen.patcher;

import com.nokia.sdt.sourcegen.ISourceGenPatch;

import java.util.List;

/**

 * 

 *

 */

public class InsertLinesPatchInstruction extends AbstractPatchInstruction {

	private List<String> newLines;

	private final boolean keepContext;

	/**

	 * Create instruction and pass modifiable list of lines to match.

	 * @param keepContext if true, other instructions had context, so insert in place,

	 * else, insert at EOF

	 */

	public InsertLinesPatchInstruction(List<String> newLines, boolean keepContext) {

		this.newLines = newLines;

		this.keepContext = keepContext;

	}

	/* (non-Javadoc)

	 * @see src.IPatchInstruction#match(java.util.List)

	 */

	public int match(ISourceGenPatch patch, int startLine, IPatchHandler handler) {

		// insert at beginning

		return startLine;

	}

	/* (non-Javadoc)

	 * @see src.IPatchInstruction#apply(int, java.util.List)

	 */

	public int apply(ISourceGenPatch patch, int index, IPatchHandler handler) {

		String[] lineArray = (String[]) newLines.toArray(new String[newLines.size()]);

		if (!keepContext) {

			index = handler.getEndLineNumber();

		}

		return handler.replaceLines(patch, index, index, lineArray);

	}

}