public override Expression VisitSub([NotNull] CalcLangParser.SubContext context)
{
(int index, int length) = ExpressionIndexAndLength(context.SourceInterval);
return(new BinaryOperationExpression(
index, length,
Visit(context.expression(0)),
Operation.Subtract,
Visit(context.expression(1))
));
}
/// <summary>
/// Visit a parse tree produced by the <c>Sub</c>
/// labeled alternative in <see cref="CalcLangParser.expression"/>.
/// <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 VisitSub([NotNull] CalcLangParser.SubContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by the <c>Sub</c>
/// labeled alternative in <see cref="CalcLangParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitSub([NotNull] CalcLangParser.SubContext context)
{
}