Remotion.Linq.SqlBackend.SqlGeneration.SqlGeneratingOuterSelectExpressionVisitor.VisitMethodCallExpression C# (CSharp) Метод

    protected override Expression VisitMethodCallExpression (MethodCallExpression expression)
    {
      ArgumentUtility.CheckNotNull ("expression", expression);

      var allItems = expression.Object != null ? new[] { expression.Object }.Concat (expression.Arguments) : expression.Arguments;
      var projectionItems = new List<Expression>();
      CommandBuilder.AppendSeparated (",", allItems, (cb, expr) => projectionItems.Add (VisitArgumentOfLocalEvaluation (expr)));

      var instance = expression.Object != null ? projectionItems.First() : null;
      var arguments = expression.Object != null ? projectionItems.Skip (1) : projectionItems;

      var newInMemoryProjection = Expression.Call (instance, expression.Method, arguments);
      CommandBuilder.SetInMemoryProjectionBody (newInMemoryProjection);

      // If there are no projection items, we need to emit a NULL constant for the MethodCallExpression to avoid producing an empty SELECT list
      if (projectionItems.Count == 0)
      {
        VisitExpression (Expression.Constant (null));
        // Don't forget to increment the column position!
        GetNextColumnID ("");
      }

      return expression;
    }