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71 lines (61 loc) · 2.38 KB
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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Apache License, Version 2.0, please send an email to
* [email protected]. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
using System;
using System.Collections.Generic;
using System.Threading;
using Microsoft.Scripting.Runtime;
namespace IronPython.Runtime {
/// <summary>
/// Provides storage of IronPython specific data in the DLR Scope ScopeExtension.
///
/// This enables IronPython to track code compilation flags such as from __future__
/// flags and import clr flags across multiple executions of user-provided scopes.
/// </summary>
class PythonScopeExtension : ScopeExtension {
private readonly ModuleContext _modContext;
private readonly PythonModule _module;
private Dictionary<object, object> _objectKeys;
public PythonScopeExtension(PythonContext context, Scope scope) : base(scope) {
_module = new PythonModule(context, scope);
_modContext = new ModuleContext(_module, context);
}
public PythonScopeExtension(PythonContext context, PythonModule module, ModuleContext modContext)
: base(module.Scope) {
_module = module;
_modContext = modContext;
}
public ModuleContext ModuleContext {
get {
return _modContext;
}
}
public PythonModule Module {
get {
return _module;
}
}
public Dictionary<object, object> EnsureObjectKeys() {
if (_objectKeys == null) {
Interlocked.CompareExchange(ref _objectKeys, new Dictionary<object, object>(), null);
}
return _objectKeys;
}
public Dictionary<object, object> ObjectKeys {
get {
return _objectKeys;
}
}
}
}