protected override Expression <CompiledFilterExpression> Transform(FilterArrayExpression ax)
{
var context = Expression.Parameter(typeof(LogEvent));
var elements = ax.Elements.Select(Transform).Select(ex => Splice(ex, context)).ToArray();
var arr = Expression.NewArrayInit(typeof(object), elements);
var sv = Expression.Call(OperatorMethods[Operators.RuntimeOpNewSequence], arr);
return(Expression.Lambda <CompiledFilterExpression>(Expression.Convert(sv, typeof(object)), context));
}
protected override FilterExpression Transform(FilterArrayExpression ax)
{
// This should probably go depth-first.
if (ax.Elements.All(el => el is FilterConstantExpression))
{
return(new FilterConstantExpression(
new SequenceValue(ax.Elements
.Cast <FilterConstantExpression>()
.Select(ce => Representation.Recapture(ce.ConstantValue)))));
}
return(base.Transform(ax));
}
protected override FilterExpression Transform(FilterArrayExpression ax)
{
return(new FilterArrayExpression(ax.Elements.Select(Transform).ToArray()));
}
protected override FilterCallExpression Transform(FilterArrayExpression ax)
{
return(null);
}
protected override FilterExpressionCosting Transform(FilterArrayExpression ax)
{
return(new FilterExpressionCosting(ax, 0.2));
}
protected abstract TResult Transform(FilterArrayExpression ax);
