Hi,
I updated the hosting wiki page to work with the current revision. But this
raises a couple of questions.
I'm just working my way through the dlr-hosting-spec.
And if I read it correctly then there are 3 levels of hosting/integration
possible.
Now AFAICT level 1 hosting is only supposed to work with external files,
because for compiling to a source unit you need a different class than
either ScriptRuntime or ScriptScope
I was expecting when I set a variable in globals that it becomes a global
variable or do I have to access that differently?
So I tried the following bit of code:
ScriptRuntime runtime = IronRuby.CreateRuntime();
runtime.Globals.SetVariable("version", "simplest test possible with a
variable succeeded");
runtime.ExecuteFile("commands.rb");
and the file commands.rb contains one line of ruby code: puts $version
put the output of that code is nil instead of the expected string.
This returns nil. I have trouble reconciling that with what I read in the
hosting spec. Because this should be totally doable with Level 1 hosting or
am I wrong in this assumption?
When I create a ScriptRuntime shouldn't it then have a DefaultScope
(Globals) that is language-specific to ruby because I create it with the
static method on IronRuby?
Also for as far as i understand it a ScriptScope is like a container for
your scripts so globals in that container are only alive in that script
scope?
Anyway when I go and use level 2 hosting because I need the execution
context and script engine and these are only introduced in level 2 hosting.
I can set global variables and then things do work
ScriptRuntime runtime = IronRuby.CreateRuntime();
ScriptEngine rubyengine = IronRuby.GetEngine(runtime);
RubyExecutionContext ctx = IronRuby.GetExecutionContext(runtime);
ctx.GlobalVariables[SymbolTable.StringToId("variable")] = "simplest test
possible with a variable succeeded";
runtime.ExecuteSourceUnit(rubyengine.CreateScriptSourceFromString("puts
\"#{$variable}\""));
And in the level 2 hosting sample the RubyExecutionContext seems to do what
I was expecting ScriptScope to do.
Am I reading the spec wrong ?
Cheers
Ivan
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