/*******************************************************************************
 * Copyright (c) 2007, 2009 Ericsson 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:
 *     Ericsson - Initial API and implementation
 *******************************************************************************/

package org.eclipse.cdt.dsf.mi.service.command.commands;

import org.eclipse.cdt.dsf.debug.service.IBreakpoints.IBreakpointsTargetDMContext;
import org.eclipse.cdt.dsf.mi.service.command.output.MIInfo;

/**
 * 
 *  -break-condition NUMBER EXPR
 *    
 *  Breakpoint NUMBER will stop the program only if the condition in
 *  EXPR is true.  The condition becomes part of the `-break-list' output
 *  (see the description of the DsfMIBreakList).
 */
 
public class MIBreakCondition extends MICommand<MIInfo>
{
	/* 
	 * MICommand wraps a parameter with double quotes if it contains a space. 
	 * However, GDB does not want quotes around a condition.
	 * To avoid the double quotes, we create our own adjustable parameter.
	 * It is important to send the breakpoint and condition as parameters because
	 * MI can insert flags such as --thread-group between the command and the
	 * parameters.  If we make the entire output be the command, then the
	 * --thread-group flag will end up at the end, and the syntax will not be valid.
	 * 
	 * See bug 213076 for more information.
	 */ 

	public MIBreakCondition(IBreakpointsTargetDMContext ctx, int breakpoint, String condition) {
        super(ctx, "-break-condition"); //$NON-NLS-1$
        
        setParameters(new Adjustable[]{ new MIStandardParameterAdjustable(Integer.toString(breakpoint)),
        		                        new NoChangeAdjustable(condition) });
    }
	
	/**
	 * This adjustable makes sure that the condition parameter will not get surrounded
	 * by double quotes.  We simply send the condition exactly as specified
	 */
	private class NoChangeAdjustable extends MICommandAdjustable {

		public NoChangeAdjustable(String param) {
			super(param);
		}

		public String getAdjustedValue() {
			return getValue();
		}
	}
}