[IronPython] Compiling with Pyc for Silverlight

[Michael Foord]

Dino Viehland wrote:
> How do you serialize the Assembly object?  If it's easy enough we could presumably
> add this to support Silverlight natively - I'd love to have pre-compiled support
> there.
>
>   
Well the Assembly type is marked with the SerializableAttribute so I was 
presuming to try something naive like a BinaryFormatter. This certainly 
doesn't blow up when you try it. Hmm... how to go from a binary format 
to a real assembly on disk is another question. Saving it as a file that 
can be deserialized back into an assembly object seems plausible but 
this isn't quite the same.

I guess a full IL writer would be needed - which means back to Cecil and 
the like and seeing if parts of them could be run on Silverlight. *sigh*

I'll look at ildasm...

Michael

>> -----Original Message-----
>> From: users-bounces at lists.ironpython.com [mailto:users-
>> bounces at lists.ironpython.com] On Behalf Of Michael Foord
>> Sent: Monday, April 20, 2009 1:24 PM
>> To: Discussion of IronPython
>> Subject: Re: [IronPython] Compiling with Pyc for Silverlight
>>
>> Dino Viehland wrote:
>>     
>>> An easy starting point would be to use ildasm + a Python script +
>>>       
>> ilasm.  There's also CCI (just released on CodePlex last week) or Cecil
>> which could also probably both be used for the task.
>>     
>> I'll start with ildasm. I looked at Cecil but it was a bit low level.
>> I've also been looking into the CompileModules source code. It doesn't
>> look impossible to get this actually working on Silverlight and
>> serialize out rather than try to save to disk (ScriptCode and
>> ScriptCode.SaveToAssembly are all public where a lot of the work is
>> done).
>>
>> I'll try ildasm first.
>>
>> Michael
>>     
>>> I can only assume this exception is coming from having the assembly
>>>       
>> identities being different - but it's strange because it does seem to
>> be looking in the 2.0.5.0 assembly, which is Silverlight, and the type
>> is definitely in there.  Hopefully re-writing the binaries will make
>> this go away.
>>     
>>>
>>>
>>>       
>>>> -----Original Message-----
>>>> From: users-bounces at lists.ironpython.com [mailto:users-
>>>> bounces at lists.ironpython.com] On Behalf Of Michael Foord
>>>> Sent: Monday, April 20, 2009 12:43 PM
>>>> To: Discussion of IronPython
>>>> Subject: Re: [IronPython] Compiling with Pyc for Silverlight
>>>>
>>>> Dino Viehland wrote:
>>>>
>>>>         
>>>>> In theory there's just 1 IL re-write that's required for this to
>>>>>
>>>>>           
>>>> work.  And that should be replacing the references to
>>>> mscorlib/IronPython to point at the Silverlight versions.  There's
>>>>         
>> no
>>     
>>>> way to directly have the written binaries target Silverlight because
>>>> Reflection Emit has no cross-compilation support :(.
>>>>
>>>> I need to rewrite references to the IronPython / DLR assemblies to
>>>>         
>> use
>>     
>>>> the Silverlight versions and the same for mscorlib.
>>>>
>>>> Any pointers as to how I should start?
>>>>
>>>>
>>>>         
>>>>> Do you know what's happening when trying to import packages?
>>>>>
>>>>>
>>>>>
>>>>>           
>>>> SystemError
>>>> at app.py in app.py, line 7 ? SystemError: Could not load type
>>>> 'Microsoft.Runtime.CompilerServices.StrongBox`1' from assembly
>>>> 'Microsoft.Scripting.Core, Version=2.0.5.0, Culture=neutral,
>>>> PublicKeyToken=31bf3856ad364e35'. ? Hide
>>>>
>>>> Michael
>>>>
>>>>
>>>>         
>>>>>> -----Original Message-----
>>>>>> From: users-bounces at lists.ironpython.com [mailto:users-
>>>>>> bounces at lists.ironpython.com] On Behalf Of Michael Foord
>>>>>> Sent: Monday, April 20, 2009 3:34 AM
>>>>>> To: Discussion of IronPython
>>>>>> Subject: [IronPython] Compiling with Pyc for Silverlight
>>>>>>
>>>>>> Hello guys,
>>>>>>
>>>>>> I'd like to modify Pyc to work with Silverlight. I tried it with
>>>>>>
>>>>>>             
>>>> simple
>>>>
>>>>         
>>>>>> modules and it works straightforwardly - but I have a report that
>>>>>>             
>> it
>>     
>>>>>> doesn't work with packages.
>>>>>>
>>>>>> I'll try it - but if anyone has any idea of how to modify the
>>>>>>
>>>>>>             
>>>> bytecode
>>>>
>>>>         
>>>>>> generation to target the CoreCLR it would be appreciated. As far
>>>>>>             
>> as
>>     
>>>> I
>>>>
>>>>         
>>>>>> can tell from looking at the source it isn't adding any direct
>>>>>> references to the desktop assemblies. Any clues as to what changes
>>>>>>             
>> I
>>     
>>>>>> should make? (Other than running from Silverlight and serializing
>>>>>>
>>>>>>             
>>>> the
>>>>
>>>>         
>>>>>> generated assemblies from memory to base64 which I would prefer to
>>>>>> avoid...).
>>>>>>
>>>>>> Michael
>>>>>>
>>>>>> --
>>>>>> http://www.ironpythoninaction.com/
>>>>>> http://www.voidspace.org.uk/blog
>>>>>>
>>>>>>
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>>>>>>
>>>>>>             
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