private ICompiledExpressionRoot GetCompiledExpressionRoot()
{
if (this.rootInstance != null && this.rootInstance.Activity != null)
{
ICompiledExpressionRoot compiledExpressionRoot;
Activity rootActivity = this.rootInstance.Activity;
if (QualifiedId.TryGetElementFromRoot(rootActivity, this.compiledRootActivityQualifiedId, out Activity compiledRootActivity) &&
QualifiedId.TryGetElementFromRoot(rootActivity, this.expressionActivityQualifiedId, out Activity expressionActivity))
{
if (CompiledExpressionInvoker.TryGetCompiledExpressionRoot(expressionActivity, compiledRootActivity, out compiledExpressionRoot))
{
//
// Revalidate to make sure we didn't hit an ID shift
if (compiledExpressionRoot.CanExecuteExpression(this.expressionText, true /* this is always a reference */, this.locationReferences, out this.expressionId))
{
return(compiledExpressionRoot);
}
}
}
//
// We were valid when this location was generated so an ID shift occurred (likely due to a dynamic update)
// Need to search all of the ICERs for one that can execute this expression.
if (FindCompiledExpressionRoot(rootActivity, out compiledExpressionRoot))
{
return(compiledExpressionRoot);
}
}
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.UnableToLocateCompiledLocationContext(this.expressionText)));
}
private bool FindCompiledExpressionRoot(Activity activity, out ICompiledExpressionRoot compiledExpressionRoot)
{
if (CompiledExpressionInvoker.TryGetCompiledExpressionRoot(activity, this.forImplementation, out compiledExpressionRoot))
{
if (compiledExpressionRoot.CanExecuteExpression(this.expressionText, true /* this is always a reference */, this.locationReferences, out this.expressionId))
{
return(true);
}
}
foreach (Activity containedActivity in WorkflowInspectionServices.GetActivities(activity))
{
if (FindCompiledExpressionRoot(containedActivity, out compiledExpressionRoot))
{
return(true);
}
}
compiledExpressionRoot = null;
return(false);
}