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Copy pathPythonDynamicStackFrame.cs
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99 lines (86 loc) · 3.61 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.Diagnostics;
using System.Reflection;
using System.Runtime.Serialization;
using Microsoft.Scripting.Runtime;
using Microsoft.Scripting.Utils;
namespace IronPython.Runtime {
/// <summary>
/// A DynamicStackFrame which has Python specific data. Currently this
/// includes the code context which may provide access to locals and the
/// function code object which is needed to build frame objects from.
/// </summary>
[Serializable]
sealed class PythonDynamicStackFrame : DynamicStackFrame, ISerializable
{
private readonly CodeContext _context;
private readonly FunctionCode _code;
public PythonDynamicStackFrame(CodeContext/*!*/ context, FunctionCode/*!*/ funcCode, int line)
: base(GetMethod(context, funcCode), funcCode.co_name, funcCode.co_filename, line) {
Assert.NotNull(context, funcCode);
_context = context;
_code = funcCode;
}
private static MethodBase GetMethod(CodeContext context, FunctionCode funcCode) {
MethodBase method;
Debug.Assert(funcCode._normalDelegate != null || funcCode._tracingDelegate != null);
if (!context.LanguageContext.EnableTracing || funcCode._tracingDelegate == null) {
method = funcCode._normalDelegate.GetMethodInfo();
} else {
method = funcCode._tracingDelegate.GetMethodInfo();
}
return method;
}
#if FEATURE_SERIALIZATION
private PythonDynamicStackFrame(SerializationInfo info, StreamingContext context)
: base((MethodBase)info.GetValue("method", typeof(MethodBase)), (string)info.GetValue("funcName", typeof(string)), (string)info.GetValue("filename", typeof(string)), (int)info.GetValue("line", typeof(int))) {
}
#endif
/// <summary>
/// Gets the code context of the function.
///
/// If the function included a call to locals() or the FullFrames
/// option is enabled then the code context includes all local variables.
///
/// Null if deserialized.
/// </summary>
public CodeContext CodeContext {
get {
return _context;
}
}
/// <summary>
/// Gets the code object for this frame. This is used in creating
/// the trace back. Null if deserialized.
/// </summary>
public FunctionCode Code {
get {
return _code;
}
}
#if FEATURE_SERIALIZATION
#region ISerializable Members
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) {
info.AddValue("method", GetMethod());
info.AddValue("funcName", GetMethodName());
info.AddValue("filename", GetFileName());
info.AddValue("line", GetFileLineNumber());
}
#endregion
#endif
}
}