public void Parse()
{
Pieces.Clear();
var pathPieces = Path.Split('.').ToList();
var param = Parameter;
ExpressionParserPiece parent = null;
pathPieces.ForEach(pp =>
{
var memberExpression = Expression.PropertyOrField(param, pp);
var current = new ExpressionParserPiece
{
Type = memberExpression.Type,
IsGenericEnumerable = QueryableHelpers.IsGenericEnumerable(memberExpression),
EnumerableType = memberExpression.Type.GenericTypeArguments.FirstOrDefault(),
Parent = parent,
Name = pp
};
Pieces.Add(current);
// for next iteration.
param = Expression.Parameter(current.IsGenericEnumerable ? current.EnumerableType : current.Type);
parent = current;
});
}
public static ExpressionParserPiece GetFirstEnumerableParent(ExpressionParserPiece piece)
{
if (piece.Parent == null)
{
return(null);
}
if (piece.Parent.IsGenericEnumerable)
{
return(piece.Parent);
}
return(GetFirstEnumerableParent(piece.Parent));
}
public static ExpressionParserPiece FirstEnumerableParent(this ExpressionParserPiece piece)
{
var result = ExpressionParser.GetFirstEnumerableParent(piece);
return(result);
}