public override Node VisitIf([NotNull] TigerParser.IfContext context)
{
var node = new IfNode(context);
node.Children.Add(Visit(context.expr(0))); //IF EXPRESSION
node.Children.Add(Visit(context.expr(1))); //THEN EXPRESSION
var elseExpr = context.expr(2);
node.Children.Add(elseExpr != null ? Visit(elseExpr) : null); //ELSE EXPRESSION if any, otherwise nil
return(node);
}
/// <summary>
/// Visit a parse tree produced by the <c>If</c>
/// labeled alternative in <see cref="TigerParser.expr"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitIf([NotNull] TigerParser.IfContext context)
{
return(VisitChildren(context));
}