public async Task <bool?> IsActiveStatementInExceptionRegionAsync(ActiveInstructionId instructionId, CancellationToken cancellationToken)
{
try
{
if (_editSession == null)
{
return(null);
}
Debug.Assert(_debuggingSession != null);
// TODO: Avoid enumerating active statements for unchanged documents.
// We would need to add a document path parameter to be able to find the document we need to check for changes.
// https://github.com/dotnet/roslyn/issues/24324
var baseActiveStatements = await _editSession.BaseActiveStatements.GetValueAsync(cancellationToken).ConfigureAwait(false);
if (!baseActiveStatements.InstructionMap.TryGetValue(instructionId, out var baseActiveStatement))
{
return(null);
}
// TODO: avoid waiting for ERs of all active statements to be calculated and just calculate the one we are interested in at this moment:
// https://github.com/dotnet/roslyn/issues/24324
var baseExceptionRegions = await _editSession.BaseActiveExceptionRegions.GetValueAsync(cancellationToken).ConfigureAwait(false);
return(baseExceptionRegions[baseActiveStatement.Ordinal].IsActiveStatementCovered);
}
catch (Exception e) when(FatalError.ReportWithoutCrashUnlessCanceled(e))
{
return(null);
}
}
public async Task <bool?> IsActiveStatementInExceptionRegionAsync(ActiveInstructionId instructionId, CancellationToken cancellationToken)
{
try
{
var editSession = _editSession;
if (editSession == null)
{
return(null);
}
// This method is only called when the EnC is about to apply changes, at which point all active statements and
// their exception regions will be needed. Hence it's not necessary to scope this query down to just the instruction
// the debugger is interested at this point while not calculating the others.
var baseActiveStatements = await editSession.BaseActiveStatements.GetValueAsync(cancellationToken).ConfigureAwait(false);
if (!baseActiveStatements.InstructionMap.TryGetValue(instructionId, out var baseActiveStatement))
{
return(null);
}
var baseExceptionRegions = (await editSession.GetBaseActiveExceptionRegionsAsync(cancellationToken).ConfigureAwait(false))[baseActiveStatement.Ordinal];
// If the document is out-of-sync the exception regions can't be determined.
return(baseExceptionRegions.Spans.IsDefault ? (bool?)null : baseExceptionRegions.IsActiveStatementCovered);
}
catch (Exception e) when(FatalError.ReportWithoutCrashUnlessCanceled(e))
{
return(null);
}
}
public async Task <LinePositionSpan?> GetCurrentActiveStatementPositionAsync(ActiveInstructionId instructionId, CancellationToken cancellationToken)
{
try
{
// It is allowed to call this method before entering or after exiting break mode. In fact, the VS debugger does so.
// We return null since there the concept of active statement only makes sense during break mode.
var editSession = _editSession;
if (editSession == null)
{
return(null);
}
// TODO: Avoid enumerating active statements for unchanged documents.
// We would need to add a document path parameter to be able to find the document we need to check for changes.
// https://github.com/dotnet/roslyn/issues/24324
var baseActiveStatements = await editSession.BaseActiveStatements.GetValueAsync(cancellationToken).ConfigureAwait(false);
if (!baseActiveStatements.InstructionMap.TryGetValue(instructionId, out var baseActiveStatement))
{
return(null);
}
var(oldPrimaryDocument, _) = await editSession.DebuggingSession.LastCommittedSolution.GetDocumentAndStateAsync(baseActiveStatement.PrimaryDocumentId, cancellationToken).ConfigureAwait(false);
if (oldPrimaryDocument == null)
{
// Can't determine position of an active statement if the document is out-of-sync with loaded module debug information.
return(null);
}
var primaryDocument = _workspace.CurrentSolution.GetDocument(baseActiveStatement.PrimaryDocumentId);
if (primaryDocument == null)
{
// The document has been deleted.
return(null);
}
var documentAnalysis = await editSession.GetDocumentAnalysis(oldPrimaryDocument, primaryDocument).GetValueAsync(cancellationToken).ConfigureAwait(false);
var currentActiveStatements = documentAnalysis.ActiveStatements;
if (currentActiveStatements.IsDefault)
{
// The document has syntax errors.
return(null);
}
return(currentActiveStatements[baseActiveStatement.PrimaryDocumentOrdinal].Span);
}
catch (Exception e) when(FatalError.ReportWithoutCrashUnlessCanceled(e))
{
return(null);
}
}
public ActiveStatement(int ordinal, int primaryDocumentOrdinal, ImmutableArray <DocumentId> documentIds, ActiveStatementFlags flags, LinePositionSpan span, ActiveInstructionId instructionId, ImmutableArray <Guid> threadIds)
{
Debug.Assert(ordinal >= 0);
Debug.Assert(primaryDocumentOrdinal >= 0);
Debug.Assert(!documentIds.IsDefaultOrEmpty);
Ordinal = ordinal;
PrimaryDocumentOrdinal = primaryDocumentOrdinal;
DocumentIds = documentIds;
Flags = flags;
Span = span;
ThreadIds = threadIds;
InstructionId = instructionId;
}
public ActiveStatementDebugInfo(
ActiveInstructionId instructionId,
string documentNameOpt,
LinePositionSpan linePositionSpan,
ImmutableArray <Guid> threadIds,
ActiveStatementFlags flags)
{
Debug.Assert(!threadIds.IsDefaultOrEmpty);
ThreadIds = threadIds;
InstructionId = instructionId;
Flags = flags;
DocumentNameOpt = documentNameOpt;
LinePositionSpan = linePositionSpan;
}