[Mono-dev] DLR with Mono.CSharp.Evaluator: The predefined type Microsoft.CSharp.RuntimeBinder.Binder' is not defined or imported

[Bartosz Przygoda]

I've put the code and binaries needed to reproduce this issue under this
repository: https://github.com/bprzygoda/mono-dlr-repro

Folder structure:
*lib*: binaries from mono 3.0.1 distribution (minimal set)
*managed*: managed-part of the repro, the executable is also contained in
root directory, built with vs2012

Files:
*mono-2.0.dll, Mono.CSharp.dll* - from 3.0.1 distribution




On 23 November 2012 23:13, Marek Safar <marek.safar at gmail.com> wrote:

> Hello,
>
> I'm currently implementing REPL functionality in my app that embeds mono
>> runtime (3.0.1), and I've encountered some issues when evaluating code that
>> contains dynamic invocation.
>>
>> For example, consider this simple dynamic class:
>>
>> public class Foo : DynamicObject {
>> public override bool TryGetMember(GetMemberBinder binder, out object
>> result) {
>>  result = 5;
>> return true;
>> }
>> }
>>
>> The following Evaluator initialization:
>>
>>         var settings = new CompilerSettings();
>>         var printer = new ConsoleReportPrinter();
>>         eval = new Evaluator(new CompilerContext(settings, printer));
>>         eval.ReferenceAssembly(typeof(REPL).Assembly);
>>         eval.Run("using System;");
>>
>> And the evaluation
>>
>>         dynamic f = new Program.Foo();
>>         f.Whatever;
>>
>> gives following error:
>>
>> error CS0518: The predefined type Microsoft.CSharp.RuntimeBinder.Binder'
>> is not defined or imported (1,4): error CS1969: Dynamic operation cannot be
>> compiled without `Microsoft.CSharp.dll' assembly reference.
>>
>>
> This is strange, are you embedding correct runtime version (4.0) ?
>
> I have tried to cook full sample based on your code and it works without
> error for me as a standalone app.
>
> using System;
> using System.Dynamic;
> using Mono.CSharp;
>
> public class Foo : DynamicObject
> {
>     public override bool TryGetMember(GetMemberBinder binder, out object
> result)
>     {
>         Console.WriteLine("called");
>         result = 5;
>         return true;
>     }
> }
>
> class C
> {
>     public static void Main()
>     {
>         var settings = new CompilerSettings();
>         var printer = new ConsoleReportPrinter();
>         var eval = new Evaluator(new CompilerContext(settings, printer));
>         eval.ReferenceAssembly(typeof(Foo).Assembly);
>         eval.Run("using System;");
>         eval.Run("dynamic f = new Foo();");
>         eval.Run("f.Whatever;");
>     }
> }
>
> Marek
>
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