[jira] Closed: (BOO-255) Allow outside scopes to be used by boo interpreter

Message:

   The following issue has been closed.

   Resolver: Rodrigo B. de Oliveira
       Date: Sun, 20 Feb 2005 2:27 PM

A new class has been added to Boo.Lang.Interpreter:

    AbstractInterpreter

The methods Lookup, Declare, GetValue and SetValue can be overriden for simple 
custom name processing.
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View the issue:
  http://jira.codehaus.org/browse/BOO-255

Here is an overview of the issue:
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        Key: BOO-255
    Summary: Allow outside scopes to be used by boo interpreter
       Type: Improvement

     Status: Closed
   Priority: Major
 Resolution: FIXED

 Original Estimate: Unknown
 Time Spent: Unknown
  Remaining: Unknown

    Project: Boo
   Fix Fors:
             0.6

   Assignee: 
   Reporter: Doug Holton

    Created: Sun, 20 Feb 2005 1:11 PM
    Updated: Sun, 20 Feb 2005 2:27 PM

Description:
Make it easier to run the boo interpreter from a regular boo or C# script by 
letting the caller provide an outside object that is used for name resolution 
lookups (via system.reflection).

Perhaps make an overload of interpreter.Eval that accepts an object to be used 
for name lookups if the regular lookups fail.

Or maybe create an "AddScope(instance as object)" method so that multiple 
outside objects can be used for name lookups.

Or else use events or virtual methods to let us hook into the boo interpreter:

class LocalInterpreter(InteractiveInterpreter):
    instance
    mytype as Type
    def constructor(inst):
            instance = inst
            mytype = inst.GetType()
    override def Lookup(name as string): //not possible

class Person
    ....
    def ToString():
            interpreter = LocalInterpreter(self)
            result = interpreter.Eval(formatstring)
            return result.ToString() if len(result.Errors) == 0 

I don't know the best solution.


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