public override bool VisitExpression([NotNull] calculatorParser.ExpressionContext context)
{
if (context.children != null)
{
foreach (IParseTree c in context.children)
{
if (!Visit(c))
{
Results[context] = false;
return(false);
}
}
}
if (context.ChildCount == 0)
{
Results[context] = false;
return(false);
}
bool lhs = Results[context.GetChild(0)];
if (context.ChildCount == 1)
{
Results[context] = lhs;
return(lhs);
}
Results[context] = false;
return(false);
}
public override Expression VisitExpression([NotNull] calculatorParser.ExpressionContext context)
{
if (context.children != null)
{
foreach (IParseTree c in context.children)
{
Visit(c);
}
}
if (_completeness.Results[context])
{
Expression lhs = Results[context.GetChild(0)];
Results[context] = lhs;
return(lhs);
}
Results[context] = null;
return(null);
}
/// <summary>
/// Visit a parse tree produced by <see cref="calculatorParser.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 VisitExpression([NotNull] calculatorParser.ExpressionContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="calculatorParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitExpression([NotNull] calculatorParser.ExpressionContext context)
{
}