/*
* This software and all files contained in it are distrubted under the MIT license.
*
* Copyright (c) 2013 Cogito Learning Ltd
*
* 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 uk.co.cogitolearning.cogpar;
/**
* A visitor that sets a variable with a specific name to a given value
*/
public class SetVariable implements ExpressionNodeVisitor
{
private String name;
private double value;
/**
* Construct the visitor with the name and the value of the variable to set
*
* @param name
* the name of the variable
* @param value
* the value of the variable
*/
public SetVariable(String name, double value)
{
super();
this.name = name;
this.value = value;
}
/**
* Checks the nodes name against the name to set and sets the value if the two
* strings match
*/
public void visit(VariableExpressionNode node)
{
if (node.getName().equals(name))
node.setValue(value);
}
/** Do nothing */
public void visit(ConstantExpressionNode node)
{}
/** Do nothing */
public void visit(AdditionExpressionNode node)
{}
/** Do nothing */
public void visit(MultiplicationExpressionNode node)
{}
/** Do nothing */
public void visit(ExponentiationExpressionNode node)
{}
/** Do nothing */
public void visit(FunctionExpressionNode node)
{}
}