public override Node VisitComparison([NotNull] TigerParser.ComparisonContext context)
{
ComparisonNode node;
switch (context.op.Text)
{
case "<>":
node = new NeNode(context);
break;
case "=":
node = new EqNode(context);
break;
case ">=":
node = new GeNode(context);
break;
case "<=":
node = new LeNode(context);
break;
case ">":
node = new GtNode(context);
break;
case "<":
node = new LtNode(context);
break;
default:
throw new NotSupportedException();
}
node.Children.Add(Visit(context.expr(0))); // LEFT EXPRESSION
node.Children.Add(Visit(context.expr(1))); // RIGHT EXPRESSION
return(node);
}
/// <summary>
/// Visit a parse tree produced by the <c>Comparison</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 VisitComparison([NotNull] TigerParser.ComparisonContext context)
{
return(VisitChildren(context));
}
