Using Trim() on string field throws ParseException: 'No applicable method 'Trim' exists in type 'String''

[vologar]

Using the latest nuget package 1.2.8 of System.Linq.Dynamic.Core.

Exception is thrown when using Trim() on a string field.

Exception

System.Linq.Dynamic.Core.Exceptions.ParseException:
Exception message:
'No applicable method 'Trim' exists in type 'String''
Stack trace:
System.Linq.Dynamic.Core.Exceptions.ParseException
  HResult=0x80131500
  Message=No applicable method 'Trim' exists in type 'String'
  Source=System.Linq.Dynamic.Core
  StackTrace:
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseMemberAccess(Type type, Expression expression)
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParsePrimary()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseUnary()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseMultiplicative()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAdditive()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseShiftOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseComparisonOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLogicalAndOrOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIn()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAndOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseOrOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLambdaOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseNullCoalescingOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseConditionalOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.Parse(Type resultType, Boolean createParameterCtor)
   at System.Linq.Dynamic.Core.DynamicExpressionParser.ParseLambda(Type delegateType, ParsingConfig parsingConfig, Boolean createParameterCtor, ParameterExpression[] parameters, Type resultType, String expression, Object[] values)
   at System.Linq.Dynamic.Core.DynamicExpressionParser.ParseLambda[T,TResult](ParsingConfig parsingConfig, Boolean createParameterCtor, String expression, Object[] values)
   at TestDynamicLinq.frmTest.btnTest_Click(Object sender, EventArgs e) in D:\Code\System.Linq.Dynamic.Core-master\System.Linq.Dynamic.Core-master\TestDynamicLinq\frmTest.cs:line 29
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at TestDynamicLinq.Program.Main() in D:\Code\System.Linq.Dynamic.Core-master\System.Linq.Dynamic.Core-master\TestDynamicLinq\Program.cs:line 19

3. Code to reproduce

public class Person
    {        public string Name { get; set; }           }

string query = "Name.Trim()=\"John\""; 
var exp = DynamicExpressionParser.ParseLambda<Person, bool>(null, false, query, null); // throws exception

4. Any further technical details

The code works with ToUpper() and ToLower() extensions methods.
e.g string query = "Name.ToUpper()="John""; // does not throw an exception

Trim() works when referencing the github solution directly. But throws the exception when using the latest nuget package. What am I missing? Is there a workaround for this?

[vologar]

Looks like the changes made to IsBetterThan(Expression[] args, MethodData first, MethodData second) in MethodFinder class to handle 0 args are not in the latest package yet.
The following works in the meantime : "Name.Trim(new char[] {' '})="John"" ; // use Trim with parameters because parametless version is not handled correctly for now.

[StefH]

Hello @vologar, I'll try to release a new package this weekend.

[vologar]

Got the latest package. The issue is no longer there. The code is working with Trim(). Thank you.