[IronPython] IronPython and IronRuby interop with IronRuby 0.9

[Tomas Matousek]

This works:

import clr
clr.AddReference('IronRuby')

from IronRuby import Ruby
from System import Array

paths = [r'C:\Binaries\IronRuby\lib\IronRuby', r'C:\Binaries\IronRuby\lib\ruby\1.8']
array = Array[str](paths)

engine = Ruby.CreateEngine()
engine.SetSearchPaths(array)

scope = engine.CreateScope()
source = engine.Execute('''
require 'date'

def d
  Date::civil(2003, 4, 8)
end
''', scope)

print scope.d()
print engine.Runtime.Globals.Date

---

Top-level methods, not local variables, are published in the scope.
Classes and modules are published in Runtime.Globals scope.

And this works too (the value of the last expression is returned):
print engine.Execute('''
require 'date'
Date::civil(2003, 4, 8)
''')

Tomas

-----Original Message-----
From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Michael Foord
Sent: Saturday, August 22, 2009 8:46 AM
To: Discussion of IronPython
Subject: Re: [IronPython] IronPython and IronRuby interop with IronRuby 0.9

Hehe - well I can fish the contents of the library I required from engine.Runtime.Globals, which seems right as I'm requiring it in the global namespace. I'm still surprised the ScriptScope is empty.

Michael


Michael Foord wrote:
> Ok, so setting the engine search paths solves the failure to find the
> library, but the ScriptScope is still coming back empty. In the
> example below I would have expected to see 'd' in the ScriptScope.
>
> c:\Binaries\IronRuby\bin>ipy.exe interop.py []
>
> From this code:
>
> import clr
> clr.AddReference('IronRuby')
> clr.AddReference('Microsoft.Scripting')
>
> from System import Array
>
> paths = [r'C:\Binaries\IronRuby\lib\IronRuby',
> r'C:\Binaries\IronRuby\lib\ruby\1.8']
> array = Array[str](paths)
>
> source_code = "require 'date'\nd = Date::civil(2003, 4, 8)\n"
>
> from Microsoft.Scripting import SourceCodeKind from IronRuby import
> Ruby engine = Ruby.CreateEngine()
> engine.SetSearchPaths(array)
> source = engine.CreateScriptSourceFromString(source_code,
> SourceCodeKind.Statements)
> scope = engine.CreateScope()
> source.Execute(scope)
>
> print dir(scope)
>
> Michael
>
> 2009/8/22 Michael Foord <fuzzyman at voidspace.org.uk
> <mailto:fuzzyman at voidspace.org.uk>>
>
>     Hello all,
>
>     I've played a little bit with IronPython and IronRuby interop with
>     the IronRuby 0.9 binaries.
>
>     A very basic example works as expected:
>
>     IronPython 2.6 Beta 2 (2.6.0.20) on .NET 2.0.50727.4927
>     Type "help", "copyright", "credits" or "license" for more information.
>     >>> import clr
>     >>> clr.AddReference('IronRuby')
>     >>> from IronRuby import Ruby
>     >>>
>     >>> engine = Ruby.CreateEngine()
>     >>> source = engine.CreateScriptSourceFromString("puts 'Hello from
>     Ruby'")
>     >>> scope = engine.CreateScope()
>     >>>
>     >>> source.Execute(scope)
>     Hello from Ruby
>     >>>
>
>
>     However my attempts to use a Ruby library fails. The same code
>     works when executed from ir.exe:
>
>     >>> import clr
>     >>> clr.AddReference('IronRuby')
>     >>> clr.AddReference('Microsoft.Scripting')
>     >>>
>     >>> from Microsoft.Scripting import SourceCodeKind
>     >>> from IronRuby import Ruby
>     >>> engine = Ruby.CreateEngine()
>     >>> source = engine.CreateScriptSourceFromString("require 'date'",
>     SourceCodeKin
>     d.Statements)
>     >>> scope = engine.CreateScope()
>     >>> source.Execute(scope)
>     Traceback (most recent call last):
>      File "<stdin>", line 1, in <module>
>     Exception: no such file to load -- date
>     >>>
>
>     I tried adding a reference to IronRuby.Libraries to the runtime
>     associated with the Ruby engine (using runtime.LoadAssembly) but
>     this didn't help.
>
>     Requiring Ruby modules I've written myself doesn't blow-up but
>     doesn't populate the scriptscope they are executed in with
>     anything. Likewise calling engine.ExecuteFile('foo.rb') returns an
>     empty ScriptScope.
>
>     Any ideas?
>
>     All the best,
>
>     Michael Foord
>
>     --
>     http://www.ironpythoninaction.com/
>     http://www.voidspace.org.uk/blog
>
>
>
>
>
> --
> http://www.ironpythoninaction.com/
>
>
> ----------------------------------------------------------------------
> --
>
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--
http://www.ironpythoninaction.com/
http://www.voidspace.org.uk/blog


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