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System::TypeLoadException when including C++/CLI interface with modopts

description

I'm trying to create a ruby class that implements a .NET interface that was written with C++/CLI and it throws a TypeLoadException when the interface includes a modopt.
The ruby class appears as such

class RubyVersion
include DotNet::ICppInterface

end

and the .NET IL method signature that includes the modopt appears as such

.method public hidebysig newslot abstract virtual instance void MethodName(int32 modopt([mscorlib]System.Runtime.CompilerServices.IsLong) slotNumber) cil managed
{
}

---

The full exception output is as follows

System::TypeLoadException: Signature of the body and declaration in a method implementation do not match. Type: 'IronRuby.Classes.Object$1'. Assembly: 'Snippets.scripting, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.
mscorlib:0:in `_TermCreateClass'
mscorlib:0:in `CreateTypeNoLock'
mscorlib:0:in `CreateType'
c:\source\github\new_IR\ndp\fx\src\Core\Microsoft\Scripting\Actions\DynamicMetaObjectBinder.cs:84:in
`Bind'
c:\source\github\new_IR\ndp\fx\src\Core\Microsoft\Scripting\Actions\CallSiteBinder.cs:79:in
`BindDelegate'
WriteProgram_spec.rb:7
:0:in `instance_eval'
mspec.rb:65:in `protect'
context.rb:135:in `protect'
c:\source\github\new_IR\Merlin\Main\Languages\Ruby\Libraries.LCA_RESTRICTED\Builtins\Enumerable.cs:53:in
`<TrueForItems>b__0'
:0:in `each'
c:\source\github\new_IR\Merlin\Main\Languages\Ruby\Libraries.LCA_RESTRICTED\Builtins\Enumerable.cs:34:in
`Each'
c:\source\github\new_IR\Merlin\Main\Languages\Ruby\Libraries.LCA_RESTRICTED\Builtins\Enumerable.cs:51:in
`TrueForItems'
:0:in `all?'
context.rb:133:in `protect'
context.rb:155:in `process'
:0:in `each'
context.rb:147:in `process'
mspec.rb:29:in `describe'
object.rb:10:in `describe'
WriteProgram_spec.rb:0
:0:in `load'
mspec.rb:55:in `files'
:0:in `instance_eval'
mspec.rb:65:in `protect'
mspec.rb:49:in `files'
:0:in `each'
mspec.rb:45:in `files'
mspec.rb:39:in `process'
mspec-run.rb:82:in `run'
script.rb:209:in `main'
mspec-run:0

---

The work around that I'm using is to create an abstract class in C# that implements the interface and inherit from the abstract class in Ruby, however it would be nice if IronRuby could work directly with the modopt interface.

No files are attached

Closed Jul 28 2011 at 12:21 AM by jimmysch

Taking Tomas's word for it

comments

TomasMatousek wrote Oct 14 2009 at 2:44 AM

.. and also both interface method implementations and virtual method overrides.

TomasMatousek wrote Oct 14 2009 at 2:40 AM

Fix ready. Jim, we should test both optional and required modopts on return value and parameters in Ruby and Python.

TomasMatousek wrote Oct 14 2009 at 2:27 AM

Doesn't work in IronPython either:
import clr
clr.AddReference('x.dll')

import IFoo

class C(IFoo):
pass

print C()

shannoncornish wrote May 8 2009 at 6:58 AM

Further testing with interop and modopt has revealed that we are unable to invoke methods from IronRuby that have modopt in the signature

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