public ExpressionResolutionResult GetExpressionResolutionResult(
ExpressionResolutionResult expressionResolutionResult, IMemberMap propertyMap, LetPropertyMaps letPropertyMaps)
{
var mapFrom = propertyMap.CustomMapExpression;
if (!IsSubQuery() || letPropertyMaps.ConfigurationProvider.ResolveTypeMap(propertyMap.SourceType, propertyMap.DestinationType) == null)
{
return(new ExpressionResolutionResult(mapFrom.ReplaceParameters(propertyMap.CheckCustomSource(expressionResolutionResult, letPropertyMaps))));
}
if (propertyMap.CustomSource == null)
{
return(new ExpressionResolutionResult(letPropertyMaps.GetSubQueryMarker(mapFrom), mapFrom));
}
var newMapFrom = Lambda(mapFrom.ReplaceParameters(propertyMap.CustomSource.Body), propertyMap.CustomSource.Parameters);
return(new ExpressionResolutionResult(letPropertyMaps.GetSubQueryMarker(newMapFrom), newMapFrom));
bool IsSubQuery()
{
if (!(mapFrom.Body is MethodCallExpression methodCall))
{
return(false);
}
var method = methodCall.Method;
return(method.IsStatic && method.DeclaringType == typeof(Enumerable));
}
}
public ExpressionResolutionResult GetExpressionResolutionResult(ExpressionResolutionResult expressionResolutionResult, IMemberMap propertyMap, LetPropertyMaps letPropertyMaps) => new ExpressionResolutionResult(propertyMap.SourceMembers.MemberAccesses(propertyMap.CheckCustomSource(expressionResolutionResult, letPropertyMaps)));