private static Expression Apply(this LambdaExpression lambda, bool allowInvoke, params Expression[] exps)
{
var replacer = new ParameterExpressionReplacer(lambda.Parameters, exps);
var result = replacer.Visit(lambda.Body);
if (!allowInvoke || !replacer.ReplaceCounts.Where((n, i) => n > 1 && exps[i].IsComplex()).Any())
{
return(result);
}
return(Expression.Invoke(lambda, exps));
}
public static LambdaExpression TrimParameters(this LambdaExpression lambda, int skip = 0)
{
var replacer = new ParameterExpressionReplacer(lambda.Parameters, lambda.Parameters.ToArray <Expression>());
replacer.Visit(lambda.Body);
if (replacer.ReplaceCounts.Skip(skip).All(n => n > 0))
{
return(lambda);
}
return(Expression.Lambda(lambda.Body, lambda.Parameters.Where((_, i) => i < skip || replacer.ReplaceCounts[i] > 0)));
}
public static Expression Apply(this LambdaExpression lambda, params Expression[] exps)
{
var replacer = new ParameterExpressionReplacer(lambda.Parameters, exps);
var result = replacer.Visit(lambda.Body);
if (replacer.ReplaceCounts.Max() <= 1 || !exps.Any(IsComplex))
{
return(result);
}
return(Expression.Invoke(lambda, exps));
}
public static Expression Apply(this LambdaExpression lambda, params Expression[] exps)
{
var replacer = new ParameterExpressionReplacer(lambda.Parameters, exps);
return(replacer.Visit(lambda.Body));
}
