/*******************************************************************************
* Copyright (c) 2007 LuaJ. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package lua.debug.response;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import lua.debug.SerializationHelper;
import lua.debug.Variable;

public class DebugResponseStack implements DebugResponse {
    protected Variable[] variables;
    
    public DebugResponseStack(Variable[] variables) {
    	if (variables == null) {
    		this.variables = new Variable[0];
    	} else {
            this.variables = variables;    		
    	}
    }
    
    public Variable[] getVariables() {
        return this.variables;
    }

    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    public String toString() {
        StringBuilder buffer = new StringBuilder();
        for (int i = 0; variables != null && i < variables.length; i++) {
            buffer.append("\t" + variables[i].getName() + ":" + variables[i].getIndex() + "\n");
        }
        return buffer.toString();
    }
    
	public static void serialize(DataOutputStream out, DebugResponseStack response) 
    throws IOException {
		Variable[] variables = response.getVariables();
		out.writeInt(variables == null ? 0 : variables.length);
		for (int i = 0; i < variables.length; i++) {
			SerializationHelper.serialize(variables[i], out);
		}
	}
	
    public static DebugResponseStack deserialize(DataInputStream in) throws IOException {
		int count = in.readInt();
		Variable[] variables = new Variable[count];
		for (int i = 0; i < count; i++) {
			variables[i] = (Variable) SerializationHelper.deserialize(in);
		}
		return new DebugResponseStack(variables);
	}
}