// for visitenter, visitexit, visitexecute
// require 1 to a maximum of 2 children for them to be called as user would expect.
public override void Accept(IParseTreeVisitor visitor)
{
visitor.VisitEnter(this);
int i = 0;
foreach (AExpression expression in Children)
{
if (i++ != 0)
{
visitor.VisitExecute(this);
}
expression.Accept(visitor);
}
visitor.VisitLeave(this);
}
public override void Accept(IParseTreeVisitor visitor)
{
visitor.Visit(this);
}
public abstract void Accept(IParseTreeVisitor visitor);