/// <summary>
/// Within "node", replace occurrences of identifiers matching oldName (by
/// value) with the given newNode. newNode must be an expression.
/// </summary>
/// <param name="node"></param>
/// <param name="oldName"></param>
/// <param name="newNode"></param>
public static void Replace(Node node, Identifier oldName, Node newNode)
{
if (!(newNode is Expression))
throw new ArgumentException("Replace: newNode must be an Expression");
Replacer replacer = new Replacer(oldName, newNode);
replacer.Visit(node);
}
/// <summary>
/// Within "node", find a labeled statement whose label matches the given
/// string, and replace it with the supplied statement block.
/// </summary>
/// <param name="node"></param>
/// <param name="labelName"></param>
/// <param name="block"></param>
public static void Replace(Node node, string labelName, Block block)
{
Replacer replacer = new Replacer(new Identifier(labelName), block);
replacer.Visit(node);
}