Interesting - thanks.
Michael
Jimmy Schementi wrote:
For Silverlight, a custom PAL is needed to override methods like "FileExists",
"LoadAssemblyFromPath", etc, since Silverlight should look inside the XAP file when
anything that assumes access to the file system is used.
The fact that we have a custom PAL in Silverlight a little strange, as we
should support hosting the DLR in C# Silverlight apps by just having the
assembles build with Silverlight, but if you can't change the DLR code and want
a different platform behavior, overriding the PAL is the way to go.
~js
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:users-
[EMAIL PROTECTED] On Behalf Of Michael Foord
Sent: Tuesday, June 10, 2008 1:16 PM
To: Discussion of IronPython
Subject: Re: [IronPython] Hosting API and PlatformAdaptationLayer
What's the use case for doing this?
Michael
Jimmy Schementi wrote:
The public API to do this is ScriptRuntimeSetup.HostType; an example
of using this is in Silverlight. Take a look at
Microsoft.Scripting.Silverlight/BrowserPAL.cs and
Microsoft.Scripting.Silverlight/BrowserScriptHost.cs. Here's the
basics:
class YourPAL : PlatforAdaptationLayer {
static readonly YourPAL PAL = new YourPAL();
...
}
class YourScriptHost : ScriptHost {
...
public override PlatformAdaptationLayer PlatformAdaptationLayer {
get {
return YourPAL.PAL;
}
}
}
// In code that hosts the DLR:
ScriptRuntimeSetup setup = new ScriptRuntimeSetup(true)
setup.HostType = typeof(YourScriptHost)
ScriptRuntime runtime = ScriptRuntime.Create(setup)
...
Make sense?
~Jimmy
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:users-
[EMAIL PROTECTED] On Behalf Of Orian, Helmut
Sent: Tuesday, June 10, 2008 4:00 AM
To: users@lists.ironpython.com
Subject: [IronPython] Hosting API and PlatformAdaptationLayer
At the moment I am hosting IronPython and IronRuby using the sources
from the Silverlight2beta1 SDK which I recompiled to work against
.NET
2.0 because it is the latest build of the DLR I found where both
projects work with a common Microsoft.Scripting.dll.
We have a client-server architecture and all our config-files and
other
script language files (like xsl and some own languages :-) are
stored
and versioned in our central application server instead of a
harddisk.
For the initial python script I want to execute this was no problem,
but
to get the import statement of python ('require' in ruby) to work I
implemented a class deriving from
Microsoft.Scripting.PlatformAdaptationLayer. This implementation
worked
perfectly for me, but I have not found a way to bootstrap
ScriptRuntime
and ScriptHost with my implementation by using the current public
API
in
Microsoft.Scripting.
I had to use an own implementation derived from ScriptHost to inject
my
derived PlatformAdaptationLayer instance with (ugly) reflection into
the
ScriptRuntime.
It would be nice if I could set/use my derived
PlatformAdaptationLayer
instance by public API.
Thanks,
Helmut
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