[IronPython] Loading DLL from pyc.py into ScriptEngine
Michael Foord
fuzzyman at voidspace.org.uk
Wed Aug 27 01:31:28 CEST 2008
hellosticky wrote:
> Hi Curt, yes, i'm using vanilla beta 4. Are there places to grab a
> nightly drop or do I need to compile from source?
I've just built one from source - testing all my IronPython in Action
embedding examples with the latest sources (only one minor change needed
- HostingHelpers has changed namespace).
Uploading it now in case you want to grab it (2.8mb - IronPython
binaries only - no warranties!): http://www.voidsapace.org.uk/Ipy-38029.zip
Should be there in five minutes.
Michael
> Thanks,
>
> ------------------------------------------------------------------------
> *From:* Curt Hagenlocher [mailto:curt at hagenlocher.org]
> *Sent:* Tuesday, August 26, 2008 7:04 PM
> *To:* hellosticky at gmail.com; Discussion of IronPython
> *Subject:* Re: [IronPython] Loading DLL from pyc.py into ScriptEngine
>
> Are you using Beta 4? You probably need to grab a post-beta-4
> nightly drop; we got rid of the IsComObject constructions that
> don't work in partial trust, but it happened right around the time
> Beta 4 was released and may not have made it in.
>
> On Tue, Aug 26, 2008 at 3:54 PM, hellosticky
> <hellosticky at gmail.com <mailto:hellosticky at gmail.com>> wrote:
>
> Okay, I tried it but got a Security Exception in
> System.Scripting.Com.ComMetaObject.IsComObject. The permission
> requested was for UnmanagedCode. I'm running in partial trust
> so obviously I can't be giving the code UnmanagedCode
> privilege. Is there some flag I have to set that says I'm in
> partial trust?
>
> FirstPermissionThatFailed:
> {<IPermission
> class="System.Security.Permissions.SecurityPermission,
> mscorlib, Version=2.0.0.0 <http://2.0.0.0/>, Culture=neutral,
> PublicKeyToken=b77a5c561934e089"
> version="1"
> Flags="UnmanagedCode"/>
> }
>
> Server stack trace:
> at
> System.Security.CodeAccessSecurityEngine.ThrowSecurityException(Assembly
> asm, PermissionSet granted, PermissionSet refused,
> RuntimeMethodHandle rmh, SecurityAction action, Object demand,
> IPermission permThatFailed)
> at
> System.Security.CodeAccessSecurityEngine.ThrowSecurityException(Object
> assemblyOrString, PermissionSet granted, PermissionSet
> refused, RuntimeMethodHandle rmh, SecurityAction action,
> Object demand, IPermission permThatFailed)
> at
> System.Security.CodeAccessSecurityEngine.CheckSetHelper(PermissionSet
> grants, PermissionSet refused, PermissionSet demands,
> RuntimeMethodHandle rmh, Object assemblyOrString,
> SecurityAction action, Boolean throwException)
> at
> System.Security.CodeAccessSecurityEngine.CheckSetHelper(CompressedStack
> cs, PermissionSet grants, PermissionSet refused, PermissionSet
> demands, RuntimeMethodHandle rmh, Assembly asm, SecurityAction
> action)
> at System.Scripting.Com.ComMetaObject.IsComObject(Object obj)
> at System.Scripting.Actions.MetaAction.Bind[T](Object[] args)
> at System.Scripting.Actions.CallSite`1.CreateNewRule(Rule`1
> originalMonomorphicRule, Object[] args)
> at
> System.Scripting.Actions.CallSite`1.UpdateAndExecute(Object[]
> args)
> at
> System.Scripting.Actions.UpdateDelegates.Update6[T,T0,T1,T2,T3,T4,T5,TRet](CallSite
> site, T0 arg0, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5)
> at IronPython.Runtime.Importer.Import(CodeContext context,
> String fullName, PythonTuple from, Int32 level)
> at
> IronPython.Runtime.Operations.PythonOps.ImportTop(CodeContext
> context, String fullName, Int32 level)
> at <module>$2##2(Closure , Scope , LanguageContext )
> at System.Scripting.ScriptCode.InvokeTarget(LambdaExpression
> code, Scope scope)
> at
> System.Scripting.Runtime.OptimizedScriptCode.InvokeTarget(LambdaExpression
> code, Scope scope)
> at System.Scripting.SourceUnit.Execute(Scope scope,
> ErrorSink errorSink)
> at
> Microsoft.Scripting.Hosting.ScriptSource.Execute(ScriptScope
> scope)
> at DlrHostedProvider.OnRender()
>
> Here is the code I used (approximately):
>
> StringBuilder sb = new StringBuilder(100);
>
> using (MemoryStream ms = new MemoryStream())
> {
> using (StringWriter writer = new StringWriter(sb))
> {
> Assembly assembly =
> Assembly.Load(AssemblyName);
> ScriptRuntime runtime = ScriptRuntime.Create();
> runtime.LoadAssembly(assembly);
> runtime.IO.SetOutput(ms, writer);
> ScriptEngine engine =
> runtime.GetEngine(GetEngineName());
> ScriptScope scope = engine.CreateScope();
> string code = string.Format(@"import clr
> clr.AddReference(""{0}"")
> import {1}
> ",
> AssemblyName,
> AssemblyType.Replace(".py", "")
> );
> ScriptSource source =
> engine.CreateScriptSourceFromString(
> code,
> SourceCodeKind.Statements
> );
> source.Execute(scope);
> }
> }
> content = sb.ToString();
>
> Thanks,
>
> > -----Original Message-----
> > From: hellosticky [mailto:hellosticky at gmail.com
> <mailto:hellosticky at gmail.com>]
> > Sent: Tuesday, August 26, 2008 6:46 PM
> > To: 'Srivatsn Narayanan'; 'Discussion of IronPython'
> > Subject: RE: [IronPython] Loading DLL from pyc.py into
> ScriptEngine
> >
> > Thanks, I will try that. Can you explain again how just doing
> > "import test" executes the test.py file that was compiled
> > into the DLL? It's not very logical..
> >
> > Thanks,
> >
> > > -----Original Message-----
> > > From: Srivatsn Narayanan [mailto:srivatsn at microsoft.com
> <mailto:srivatsn at microsoft.com>]
> > > Sent: Tuesday, August 26, 2008 6:34 PM
> > > To: Discussion of IronPython; hellosticky at gmail.com
> <mailto:hellosticky at gmail.com>
> > > Subject: RE: [IronPython] Loading DLL from pyc.py into
> ScriptEngine
> > >
> > > Also Assembly.Load is not sufficient to be able to import the
> > > compiled code. A clr.AddReference needs to be done which
> > > publishes the module. The easiest way to do that is include
> > > it in the string as Michael pointed out.
> > >
> > > ScriptSource source =
> > > engine.CreateScriptSourceFromString("import
> > > clr;clr.AddReference(\"test.dll\");import test",
> > > SourceCodeKind.Statements);
> > >
> > > You might need to add the current folder to the path as well
> > > before the clr.AddReference.
> > >
> > > -----Original Message-----
> > > From: users-bounces at lists.ironpython.com
> <mailto:users-bounces at lists.ironpython.com>
> > > [mailto:users-bounces at lists.ironpython.com
> <mailto:users-bounces at lists.ironpython.com>] On Behalf Of
> > Michael Foord
> > > Sent: Tuesday, August 26, 2008 3:12 PM
> > > To: hellosticky at gmail.com <mailto:hellosticky at gmail.com>;
> Discussion of IronPython
> > > Subject: Re: [IronPython] Loading DLL from pyc.py into
> ScriptEngine
> > >
> > > hellosticky wrote:
> > > > I also tried:
> > > >
> > > > Assembly assembly = Assembly.Load(AssemblyName);
> > > > ScriptRuntime runtime = ScriptRuntime.Create();
> > > > runtime.LoadAssembly(assembly);
> > > > ScriptScope scope =
> runtime.ExecuteFile("test.py");
> > > > object o = scope.Execute(null);
> > > >
> > > > But that threw a script not found exception saying it could
> > > find the source file for test.py, so it would seem like this
> > > wants to recompile it
> > > >
> > > >
> > > >> -----Original Message-----
> > > >> From: hellosticky [mailto:hellosticky at gmail.com
> <mailto:hellosticky at gmail.com>]
> > > >> Sent: Tuesday, August 26, 2008 5:52 PM
> > > >> To: IronPython
> > > >> Subject: Loading DLL from pyc.py into ScriptEngine
> > > >>
> > > >> Hi,
> > > >>
> > > >> I created an IronPython DLL with "ipy.exe pyc.py /out:test
> > > >> /target:dll test.py" which created test.dll. Now, from C#,
> > > >> I'd like to execute test.py from test.dll. I just opened up
> > > >> dlr-spec-hosting and there's a
> CreateScriptSourceFromStream,
> > > >> but I don't see that in 2.0 Beta 4 bits. Here is where I'm
> > > >> stuck. How do I get that assembly into the engine and then
> > > >> execute test.py?
> > >
> > > Well - the easiest way is to execute 'import test' after
> > having added
> > > the assembly. This should execute the code in order to create
> > > a module.
> > >
> > > ScriptScope scope = engine.CreateScope();
> > > ScriptSource source =
> > > engine.CreateScriptSourceFromString("import test",
> > > SourceCodeKind.Statements);
> > > engine.Execute(scope);
> > >
> > > There is an API for setting a stream as stdout on an engine -
> > > 'runtime.IO.SetOutput'.
> > >
> > > Michael
> > >
> > > >> Also, I'd like to get the output into a
> > > >> string (I guess I can just redirect Console.Out?)
> > > >>
> > > >> public string Execute(string assemblyName)
> > > >> {
> > > >> string content = null;
> > > >>
> > > >> Assembly assembly = Assembly.Load(assemblyName);
> > > >> ScriptRuntime runtime = ScriptRuntime.Create();
> > > >> ObjectOperations operations =
> runtime.CreateOperations();
> > > >> ScriptEngine engine = runtime.GetEngine("py");
> > > >> // magic..
> > > >>
> > > >> return content;
> > > >> }
> > > >>
> > > >> Thanks,
> > > >>
> > > >
> > > > _______________________________________________
> > > > Users mailing list
> > > > Users at lists.ironpython.com
> <mailto:Users at lists.ironpython.com>
> > > >
> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
> > > >
> > >
> > >
> > > --
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> > >
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>
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