Accessing IronRuby method from C#

Greetings to the mighty IronRuby experts from a humble developer! :slight_smile:

I am testing the latest CVS snapshot (v. 73, downloaded an hour ago) of
IronRuby.

We are evaluating IronRuby for possible usage in WPF project.

First, I want to test a simple case of defining a method in Ruby and
calling the method later from C#.

Below I copy a test program that tries this in two ways (methods
AccessMethod1 and AccessMethod2).
Both attempts fail with exceptions that are written as comments in the
code.

I understand that the DLR and IronRuby are in a flux at the moment but I
still suppose there must be some working way to perform such trivial
interop task…?

Thanks in advance!

Robert B.
Software architect
Napa Ltd


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Scripting;
using Microsoft.Scripting.Hosting;
using Ruby.Runtime;
using Ruby.Builtins;

namespace IronRubyTests
{
class Program
{
private IScriptEnvironment _scriptRuntime;
public IScriptEnvironment ScriptRuntime { get { return
this._scriptRuntime; } }
public IScriptEngine RubyEngine { get { return
ScriptRuntime.GetEngine(typeof(RubyContext)); } }
public ObjectOperations Operations { get { return
RubyEngine.Operations; } }
public RubyExecutionContext ExecutionContext { get { return
Ruby.IronRuby.GetExecutionContext(RubyEngine); } }
public IAttributesCollection GlobalItems { get { return
ExecutionContext.GlobalScope.Dict; } }

    delegate void TestDelegate();

    static void Main(string[] args)
    {
        new Program().RunAllTests();
    }

    public Program()
    {
        this._scriptRuntime = Ruby.IronRuby.CreateRuntime();
    }

    public void RunAllTests()
    {
        List<TestDelegate> tests = new List<TestDelegate> {
            new TestDelegate(SimpleTests), new

TestDelegate(AccessMethod1), new TestDelegate(AccessMethod2)
};
foreach (TestDelegate test in tests)
{
Console.WriteLine("================== EXECUTING: {0}
====================", test.Method.Name);
try { test(); }
catch (Exception ex) { Console.WriteLine(ex); }
}
}

    public IScriptScope ExecuteString(string code)
    {
        return ScriptRuntime.ExecuteSourceUnit(
            RubyEngine.CreateScriptSourceFromString(code));
    }

    public void SetGlobalVar(string varName, object value)
    {

ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)] =
value;
}

    public object GetGlobalVar(string varName)
    {
        return

ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)];
}

    public object GetGlobalConst(string name)
    {
        return

GlobalItems.SymbolAttributes[SymbolTable.StringToId(name)];
}

    public void SimpleTests()
    {
        ExecuteString("puts 'RUBY SAYS HELLO'"); // OK
        SetGlobalVar("x", 666); // OK
        ExecuteString("$y=555"); // OK
        ExecuteString("puts \"ruby: $x = #{$x}\""); // OK
    }

    public void AccessMethod1()
    {
        // Following fails with System.MissingMethodException:

undefined local variable or method ‘method’ for main:Object
ExecuteString(@"
def sayHello
puts ‘Hello from method!’
end

            $m = method(:sayHello)
        ");

        // Get the method object:
        object m = GetGlobalVar("m");

        // Here call the method, etc.
    }

    public void AccessMethod2()
    {
        ExecuteString(@"
          module MyMethods
            def sayHello
               puts 'Hello from method!'
            end
          end
        ");

        RubyModule myModule = (RubyModule)

GetGlobalConst(“MyMethods”); // OK
object sayHello = Operations.GetMember(myModule,
“sayHello”); // Fails at Assertion at
ActionBinber.UpdateSiteAndExecute()

        // Here call the method, etc.
    }

} // class

} // namespace

Today we don’t support unbound methods yet (what you are trying to do
via the call to the method function). If you want first class functions,
Proc.new and lambda work just fine today.

I’ll let Tomas chime in on AccessMethod2().

Thanks,
-John

From: [email protected]
[mailto:[email protected]] On Behalf Of Robert
Brotherus
Sent: Tuesday, January 22, 2008 8:20 AM
To: [email protected]
Subject: [Ironruby-core] Accessing IronRuby method from C#

Greetings to the mighty IronRuby experts from a humble developer! :slight_smile:

I am testing the latest CVS snapshot (v. 73, downloaded an hour ago) of
IronRuby.

We are evaluating IronRuby for possible usage in WPF project.

First, I want to test a simple case of defining a method in Ruby and
calling the method later from C#.

Below I copy a test program that tries this in two ways (methods
AccessMethod1 and AccessMethod2).
Both attempts fail with exceptions that are written as comments in the
code.

I understand that the DLR and IronRuby are in a flux at the moment but I
still suppose there must be some working way to perform such trivial
interop task…?

Thanks in advance!

Robert B.
Software architect
Napa Ltd


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Scripting;
using Microsoft.Scripting.Hosting;
using Ruby.Runtime;
using Ruby.Builtins;

namespace IronRubyTests
{
class Program
{
private IScriptEnvironment _scriptRuntime;
public IScriptEnvironment ScriptRuntime { get { return
this._scriptRuntime; } }
public IScriptEngine RubyEngine { get { return
ScriptRuntime.GetEngine(typeof(RubyContext)); } }

    public ObjectOperations Operations              { get { return 

RubyEngine.Operations; } }
public RubyExecutionContext ExecutionContext { get { return
Ruby.IronRuby.GetExecutionContext(RubyEngine); } }

    public IAttributesCollection GlobalItems        { get { return 

ExecutionContext.GlobalScope.Dict; } }

    delegate void TestDelegate();

    static void Main(string[] args)
    {
        new Program().RunAllTests();
    }

    public Program()
    {
        this._scriptRuntime = Ruby.IronRuby.CreateRuntime();
    }

    public void RunAllTests()
    {
        List<TestDelegate> tests = new List<TestDelegate> {
            new TestDelegate(SimpleTests), new 

TestDelegate(AccessMethod1), new TestDelegate(AccessMethod2)
};
foreach (TestDelegate test in tests)
{
Console.WriteLine("================== EXECUTING: {0}
====================", test.Method.Name);
try { test(); }
catch (Exception ex) { Console.WriteLine(ex); }
}
}

    public IScriptScope ExecuteString(string code)
    {
        return ScriptRuntime.ExecuteSourceUnit(
            RubyEngine.CreateScriptSourceFromString(code));
    }

    public void SetGlobalVar(string varName, object value)
    {
        ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)] 

= value;
}

    public object GetGlobalVar(string varName)
    {
        return 

ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)];
}

    public object GetGlobalConst(string name)
    {
        return 

GlobalItems.SymbolAttributes[SymbolTable.StringToId(name)];
}

    public void SimpleTests()
    {
        ExecuteString("puts 'RUBY SAYS HELLO'"); // OK
        SetGlobalVar("x", 666); // OK
        ExecuteString("$y=555"); // OK
        ExecuteString("puts \"ruby: $x = #{$x}\""); // OK
    }

    public void AccessMethod1()
    {
        // Following fails with System.MissingMethodException: 

undefined local variable or method ‘method’ for main:Object

        ExecuteString(@"
            def sayHello
               puts 'Hello from method!'
            end

            $m = method(:sayHello)
        ");

        // Get the method object:
        object m = GetGlobalVar("m");

        // Here call the method, etc.
    }

    public void AccessMethod2()
    {
        ExecuteString(@"
          module MyMethods
            def sayHello
               puts 'Hello from method!'
            end
          end
        ");

        RubyModule myModule = (RubyModule) 

GetGlobalConst(“MyMethods”); // OK
object sayHello = Operations.GetMember(myModule,
“sayHello”); // Fails at Assertion at
ActionBinber.UpdateSiteAndExecute()

        // Here call the method, etc.
    }

} // class

} // namespace

Thanks John for your reply!

Still not getting my method calls to work from C# with lambda either:

[TestMethod]
public void AccessMethod3()
{
ExecuteString(@"
$m = lambda do |par|
puts 'Hello from lambda: ’ + par
end
");
Proc m = (Proc) GetGlobalVar(“m”); // OK
Operations.Call(m, “abc”); // InvalidCast: Cannot cast Proc to
BlockParam
Delegate1 d = Operations.ConvertTo(m); // OK
d(“abc”); // InvalidCast: Cannot cast Proc to BlockParam
}

Robert B.
Software architect
Napa Ltd
Tammasaarenkatu 3, Helsinki FI-00180
P.O.Box 470, Helsinki FI-00181

Tel. +358 9 22 813 1
Direct. +358 9 22 813 611
GSM +358 45 11 456 02
Fax. +358 9 22 813 800

Email: [email protected] mailto:[email protected]
www.napa.fi http://www.napa.fi/


From: [email protected]
[mailto:[email protected]] On Behalf Of John L. (DLR)
Sent: 23. tammikuuta 2008 16:59
To: [email protected]
Subject: Re: [Ironruby-core] Accessing IronRuby method from C#

Today we don’t support unbound methods yet (what you are trying to do
via the call to the method function). If you want first class functions,
Proc.new and lambda work just fine today.

I’ll let Tomas chime in on AccessMethod2().

Thanks,

-John

From: [email protected]
[mailto:[email protected]] On Behalf Of Robert
Brotherus
Sent: Tuesday, January 22, 2008 8:20 AM
To: [email protected]
Subject: [Ironruby-core] Accessing IronRuby method from C#

Greetings to the mighty IronRuby experts from a humble developer! :slight_smile:

I am testing the latest CVS snapshot (v. 73, downloaded an hour ago) of
IronRuby.

We are evaluating IronRuby for possible usage in WPF project.

First, I want to test a simple case of defining a method in Ruby and
calling the method later from C#.

Below I copy a test program that tries this in two ways (methods
AccessMethod1 and AccessMethod2).
Both attempts fail with exceptions that are written as comments in the
code.

I understand that the DLR and IronRuby are in a flux at the moment but I
still suppose there must be some working way to perform such trivial
interop task…?

Thanks in advance!

Robert B.
Software architect
Napa Ltd


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Scripting;
using Microsoft.Scripting.Hosting;
using Ruby.Runtime;
using Ruby.Builtins;

namespace IronRubyTests
{
class Program
{
private IScriptEnvironment _scriptRuntime;
public IScriptEnvironment ScriptRuntime { get { return
this._scriptRuntime; } }
public IScriptEngine RubyEngine { get { return
ScriptRuntime.GetEngine(typeof(RubyContext)); } }

    public ObjectOperations Operations              { get { return

RubyEngine.Operations; } }
public RubyExecutionContext ExecutionContext { get { return
Ruby.IronRuby.GetExecutionContext(RubyEngine); } }

    public IAttributesCollection GlobalItems        { get { return

ExecutionContext.GlobalScope.Dict; } }

    delegate void TestDelegate();

    static void Main(string[] args)
    {
        new Program().RunAllTests();
    }

    public Program()
    {
        this._scriptRuntime = Ruby.IronRuby.CreateRuntime();
    }

    public void RunAllTests()
    {
        List<TestDelegate> tests = new List<TestDelegate> {
            new TestDelegate(SimpleTests), new

TestDelegate(AccessMethod1), new TestDelegate(AccessMethod2)
};
foreach (TestDelegate test in tests)
{
Console.WriteLine("================== EXECUTING: {0}
====================", test.Method.Name);
try { test(); }
catch (Exception ex) { Console.WriteLine(ex); }
}
}

    public IScriptScope ExecuteString(string code)
    {
        return ScriptRuntime.ExecuteSourceUnit(
            RubyEngine.CreateScriptSourceFromString(code));
    }

    public void SetGlobalVar(string varName, object value)
    {

ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)] =
value;
}

    public object GetGlobalVar(string varName)
    {
        return

ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)];
}

    public object GetGlobalConst(string name)
    {
        return

GlobalItems.SymbolAttributes[SymbolTable.StringToId(name)];
}

    public void SimpleTests()
    {
        ExecuteString("puts 'RUBY SAYS HELLO'"); // OK
        SetGlobalVar("x", 666); // OK
        ExecuteString("$y=555"); // OK
        ExecuteString("puts \"ruby: $x = #{$x}\""); // OK
    }

    public void AccessMethod1()
    {
        // Following fails with System.MissingMethodException:

undefined local variable or method ‘method’ for main:Object

        ExecuteString(@"
            def sayHello
               puts 'Hello from method!'
            end

            $m = method(:sayHello)
        ");

        // Get the method object:
        object m = GetGlobalVar("m");

        // Here call the method, etc.
    }

    public void AccessMethod2()
    {
        ExecuteString(@"
          module MyMethods
            def sayHello
               puts 'Hello from method!'
            end
          end
        ");

        RubyModule myModule = (RubyModule)

GetGlobalConst(“MyMethods”); // OK
object sayHello = Operations.GetMember(myModule,
“sayHello”); // Fails at Assertion at
ActionBinber.UpdateSiteAndExecute()

        // Here call the method, etc.
    }

} // class

} // namespace

This might be a bug - I’ve filed it (#17467).

Tomas

From: [email protected]
[mailto:[email protected]] On Behalf Of Robert
Brotherus
Sent: Thursday, January 24, 2008 12:47 AM
To: [email protected]
Subject: Re: [Ironruby-core] Accessing IronRuby method from C#

Thanks John for your reply!

Still not getting my method calls to work from C# with lambda either:

[TestMethod]
public void AccessMethod3()
{
ExecuteString(@"
$m = lambda do |par|
puts 'Hello from lambda: ’ + par
end
");
Proc m = (Proc) GetGlobalVar(“m”); // OK
Operations.Call(m, “abc”); // InvalidCast: Cannot cast Proc to
BlockParam
Delegate1 d = Operations.ConvertTo(m); // OK
d(“abc”); // InvalidCast: Cannot cast Proc to BlockParam
}

Robert B.
Software architect
Napa Ltd
Tammasaarenkatu 3, Helsinki FI-00180
P.O.Box 470, Helsinki FI-00181

Tel. +358 9 22 813 1
Direct. +358 9 22 813 611
GSM +358 45 11 456 02
Fax. +358 9 22 813 800

Email: [email protected]mailto:[email protected]
www.napa.fihttp://www.napa.fi/


From: [email protected]
[mailto:[email protected]] On Behalf Of John L. (DLR)
Sent: 23. tammikuuta 2008 16:59
To: [email protected]
Subject: Re: [Ironruby-core] Accessing IronRuby method from C#
Today we don’t support unbound methods yet (what you are trying to do
via the call to the method function). If you want first class functions,
Proc.new and lambda work just fine today.

I’ll let Tomas chime in on AccessMethod2().

Thanks,
-John

From: [email protected]
[mailto:[email protected]] On Behalf Of Robert
Brotherus
Sent: Tuesday, January 22, 2008 8:20 AM
To: [email protected]
Subject: [Ironruby-core] Accessing IronRuby method from C#

Greetings to the mighty IronRuby experts from a humble developer! :slight_smile:

I am testing the latest CVS snapshot (v. 73, downloaded an hour ago) of
IronRuby.

We are evaluating IronRuby for possible usage in WPF project.

First, I want to test a simple case of defining a method in Ruby and
calling the method later from C#.

Below I copy a test program that tries this in two ways (methods
AccessMethod1 and AccessMethod2).
Both attempts fail with exceptions that are written as comments in the
code.

I understand that the DLR and IronRuby are in a flux at the moment but I
still suppose there must be some working way to perform such trivial
interop task…?

Thanks in advance!

Robert B.
Software architect
Napa Ltd


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Scripting;
using Microsoft.Scripting.Hosting;
using Ruby.Runtime;
using Ruby.Builtins;

namespace IronRubyTests
{
class Program
{
private IScriptEnvironment _scriptRuntime;
public IScriptEnvironment ScriptRuntime { get { return
this._scriptRuntime; } }
public IScriptEngine RubyEngine { get { return
ScriptRuntime.GetEngine(typeof(RubyContext)); } }

    public ObjectOperations Operations              { get { return 

RubyEngine.Operations; } }
public RubyExecutionContext ExecutionContext { get { return
Ruby.IronRuby.GetExecutionContext(RubyEngine); } }

    public IAttributesCollection GlobalItems        { get { return 

ExecutionContext.GlobalScope.Dict; } }

    delegate void TestDelegate();

    static void Main(string[] args)
    {
        new Program().RunAllTests();
    }

    public Program()
    {
        this._scriptRuntime = Ruby.IronRuby.CreateRuntime();
    }

    public void RunAllTests()
    {
        List<TestDelegate> tests = new List<TestDelegate> {
            new TestDelegate(SimpleTests), new 

TestDelegate(AccessMethod1), new TestDelegate(AccessMethod2)
};
foreach (TestDelegate test in tests)
{
Console.WriteLine("================== EXECUTING: {0}
====================", test.Method.Name);
try { test(); }
catch (Exception ex) { Console.WriteLine(ex); }
}
}

    public IScriptScope ExecuteString(string code)
    {
        return ScriptRuntime.ExecuteSourceUnit(
            RubyEngine.CreateScriptSourceFromString(code));
    }

    public void SetGlobalVar(string varName, object value)
    {
        ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)] 

= value;
}

    public object GetGlobalVar(string varName)
    {
        return 

ExecutionContext.GlobalVariables[SymbolTable.StringToId(varName)];
}

    public object GetGlobalConst(string name)
    {
        return 

GlobalItems.SymbolAttributes[SymbolTable.StringToId(name)];
}

    public void SimpleTests()
    {
        ExecuteString("puts 'RUBY SAYS HELLO'"); // OK
        SetGlobalVar("x", 666); // OK
        ExecuteString("$y=555"); // OK
        ExecuteString("puts \"ruby: $x = #{$x}\""); // OK
    }

    public void AccessMethod1()
    {
        // Following fails with System.MissingMethodException: 

undefined local variable or method ‘method’ for main:Object

        ExecuteString(@"
            def sayHello
               puts 'Hello from method!'
            end

            $m = method(:sayHello)
        ");

        // Get the method object:
        object m = GetGlobalVar("m");

        // Here call the method, etc.
    }

    public void AccessMethod2()
    {
        ExecuteString(@"
          module MyMethods
            def sayHello
               puts 'Hello from method!'
            end
          end
        ");

        RubyModule myModule = (RubyModule) 

GetGlobalConst(“MyMethods”); // OK
object sayHello = Operations.GetMember(myModule,
“sayHello”); // Fails at Assertion at
ActionBinber.UpdateSiteAndExecute()

        // Here call the method, etc.
    }

} // class

} // namespace