private DkmEvaluationResult GetPythonView(DkmVisualizedExpression visualizedExpression)
{
var stackFrame = visualizedExpression.StackFrame;
var process = stackFrame.Process;
var pythonRuntime = process.GetPythonRuntimeInstance();
if (pythonRuntime == null)
{
return(null);
}
var home = visualizedExpression.ValueHome as DkmPointerValueHome;
if (home == null)
{
Debug.Fail("PythonViewNativeVisualizer given a visualized expression that has a non-DkmPointerValueHome home.");
return(null);
}
else if (home.Address == 0)
{
return(null);
}
var exprEval = process.GetDataItem <ExpressionEvaluator>();
if (exprEval == null)
{
Debug.Fail("PythonViewNativeVisualizer failed to obtain an instance of ExpressionEvaluator.");
return(null);
}
string cppTypeName = null;
var childExpr = visualizedExpression as DkmChildVisualizedExpression;
if (childExpr != null)
{
var evalResult = childExpr.EvaluationResult as DkmSuccessEvaluationResult;
cppTypeName = evalResult.Type;
}
else
{
object punkTypeSymbol;
visualizedExpression.GetSymbolInterface(typeof(IDiaSymbol).GUID, out punkTypeSymbol);
using (ComPtr.Create(punkTypeSymbol)) {
var typeSymbol = punkTypeSymbol as IDiaSymbol;
if (typeSymbol != null)
{
cppTypeName = typeSymbol.name;
}
}
}
PyObject objRef;
try {
objRef = PyObject.FromAddress(process, home.Address);
} catch {
return(null);
}
// TODO: Localization - [Python view] also appears in .natvis file, leave as-is for now
var pyEvalResult = new PythonEvaluationResult(objRef, "[Python view]")
{
Category = DkmEvaluationResultCategory.Property,
AccessType = DkmEvaluationResultAccessType.Private
};
var inspectionContext = visualizedExpression.InspectionContext;
CppExpressionEvaluator cppEval;
try {
cppEval = new CppExpressionEvaluator(inspectionContext, stackFrame);
} catch {
return(null);
}
var pythonContext = DkmInspectionContext.Create(visualizedExpression.InspectionSession, pythonRuntime, stackFrame.Thread,
inspectionContext.Timeout, inspectionContext.EvaluationFlags, inspectionContext.FuncEvalFlags, inspectionContext.Radix,
DkmLanguage.Create("Python", new DkmCompilerId(Guids.MicrosoftVendorGuid, Guids.PythonLanguageGuid)), null);
try {
return(exprEval.CreatePyObjectEvaluationResult(pythonContext, stackFrame, null, pyEvalResult, cppEval, cppTypeName, hasCppView: true));
} catch {
return(null);
}
}