protected override Expression VisitMember(MemberExpression node)
{
if (typeof(IModelElement).IsAssignableFrom(node.Type) && !typeof(IModelElement).IsAssignableFrom(node.Expression.Type))
{
var parameterCollector = new ParameterCollector();
parameterCollector.Visit(node);
parameterCollector.Parameters.IntersectWith(lambdaParameters);
if (parameterCollector.Parameters.Count > 0)
{
return(node);
}
var replaceMemberId = node.ToString();
ParameterExtraction extraction;
if (!parameters.TryGetValue(replaceMemberId, out extraction))
{
extraction = new ParameterExtraction(Expression.Parameter(node.Type, "model_par_" + parameters.Count.ToString()), node);
parameters.Add(replaceMemberId, extraction);
}
return(extraction.Parameter);
}
return(base.VisitMember(node));
}
private bool CheckConflictingExtractions(Dictionary <string, ParameterExtraction> extractionsSaved, LambdaExpression lambda)
{
if (parameterextractions.Count > extractionsSaved.Count)
{
foreach (var extraction in parameterextractions)
{
if (!extractionsSaved.ContainsKey(extraction.Key))
{
var parametersUsed = new ParameterCollector();
parametersUsed.Visit(extraction.Value.Value);
foreach (var parameter in lambda.Parameters)
{
if (parametersUsed.Parameters.Contains(parameter))
{
return(false);
}
}
}
}
}
return(true);
}