I use generators in IronPython.
if a exception occars in the one, I cannot get correct stack traces.
How to get the trace?
The following, my codes.
/// <summary>
/// Run a python method, and if exception occars, to trap it.
/// </summary>
static object CallFunctionImp(callee func)
{
try
{
var python_function =
Scope.GetVariable<IronPython.Runtime.PythonFunction>(funcName);
var result =
PythonEngine.Runtime.Operations.Call(python_function);
return result;
}
catch (Microsoft.Scripting.SyntaxErrorException ex)
{
var Language = HostingHelpers.GetLanguageContext(PythonEngine);
Console.WriteError(Language.FormatException(ex));
Console.WriteError(FrameToString(new StackFrame(2, true)));
}
catch (Exception ex)
{
string type = ex.GetType().ToString();
Console.Error("{0}: {1}\n", ex.GetType(), ex.Message);
// write out call stacks
Console.Info(FrameToString(new StackFrame(2, true)));
// write out call stacks upper the function
string result = "";
foreach (DynamicStackFrame frame in
ExceptionHelpers.GetStackFrames(ex, true))
{
MethodBase method = frame.GetMethod();
if (method.DeclaringType != null &&
method.DeclaringType.FullName.StartsWith("IronPython."))
{
continue;
}
result += FrameToString(frame) + Environment.NewLine;
}
Console.Info(result);
}
throw new MyScriptingExeption();
}
static string FrameToString(DynamicStackFrame frame)
{
string methodName = frame.GetMethodName();
int lineNumber = frame.GetFileLineNumber();
return String.Format(" File \"{0}\", line {1}, in {2}",
frame.GetFileName(),
lineNumber == 0 ? "unknown" : lineNumber.ToString(),
methodName);
}
static string FrameToString(StackFrame frame)
{
string stacks = string.Format(@" File ""{0}"", line {1}, in {2}",
frame.GetFileName(), frame.GetFileLineNumber(),
frame.GetMethod().ToString());
return stacks;
}
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