/// <summary>
/// Create a SequencePointList with the raw sequence points from an ArrayBuilder.
/// A linked list of instances for each syntax tree is created (almost always of length one).
/// </summary>
public static SequencePointList Create(ArrayBuilder <RawSequencePoint> seqPointBuilder, ILBuilder builder)
{
if (seqPointBuilder.Count == 0)
{
return(SequencePointList.s_empty);
}
SequencePointList first = null, current = null;
int totalPoints = seqPointBuilder.Count;
int last = 0;
for (int i = 1; i <= totalPoints; ++i)
{
if (i == totalPoints || seqPointBuilder[i].SyntaxTree != seqPointBuilder[i - 1].SyntaxTree)
{
// Create a new list
SequencePointList next = new SequencePointList(seqPointBuilder[i - 1].SyntaxTree, GetSubArray(seqPointBuilder, last, i - last, builder));
last = i;
// Link together with any additional.
if (current == null)
{
first = current = next;
}
else
{
current._next = next;
current = next;
}
}
}
return(first);
}
private static ImmutableArray <Cci.SequencePoint> GetSequencePoints(SequencePointList sequencePoints, DebugDocumentProvider debugDocumentProvider)
{
if (sequencePoints == null || sequencePoints.IsEmpty)
{
return(ImmutableArray <Cci.SequencePoint> .Empty);
}
var sequencePointsBuilder = ArrayBuilder <Cci.SequencePoint> .GetInstance();
sequencePoints.GetSequencePoints(debugDocumentProvider, sequencePointsBuilder);
return(sequencePointsBuilder.ToImmutableAndFree());
}
public MethodBody(
ImmutableArray <byte> ilBits,
ushort maxStack,
Cci.IMethodDefinition parent,
DebugId methodId,
ImmutableArray <Cci.ILocalDefinition> locals,
SequencePointList sequencePoints,
DebugDocumentProvider debugDocumentProvider,
ImmutableArray <Cci.ExceptionHandlerRegion> exceptionHandlers,
ImmutableArray <Cci.LocalScope> localScopes,
bool hasDynamicLocalVariables,
Cci.IImportScope importScopeOpt,
ImmutableArray <LambdaDebugInfo> lambdaDebugInfo,
ImmutableArray <ClosureDebugInfo> closureDebugInfo,
string stateMachineTypeNameOpt,
ImmutableArray <StateMachineHoistedLocalScope> stateMachineHoistedLocalScopes,
ImmutableArray <EncHoistedLocalInfo> stateMachineHoistedLocalSlots,
ImmutableArray <Cci.ITypeReference> stateMachineAwaiterSlots,
StateMachineMoveNextBodyDebugInfo stateMachineMoveNextDebugInfoOpt,
DynamicAnalysisMethodBodyData dynamicAnalysisDataOpt)
{
Debug.Assert(!locals.IsDefault);
Debug.Assert(!exceptionHandlers.IsDefault);
Debug.Assert(!localScopes.IsDefault);
_ilBits = ilBits;
_maxStack = maxStack;
_parent = parent;
_methodId = methodId;
_locals = locals;
_exceptionHandlers = exceptionHandlers;
_localScopes = localScopes;
_hasDynamicLocalVariables = hasDynamicLocalVariables;
_importScopeOpt = importScopeOpt;
_lambdaDebugInfo = lambdaDebugInfo;
_closureDebugInfo = closureDebugInfo;
_stateMachineTypeNameOpt = stateMachineTypeNameOpt;
_stateMachineHoistedLocalScopes = stateMachineHoistedLocalScopes;
_stateMachineHoistedLocalSlots = stateMachineHoistedLocalSlots;
_stateMachineAwaiterSlots = stateMachineAwaiterSlots;
_stateMachineMoveNextDebugInfoOpt = stateMachineMoveNextDebugInfoOpt;
_dynamicAnalysisDataOpt = dynamicAnalysisDataOpt;
_sequencePoints = GetSequencePoints(sequencePoints, debugDocumentProvider);
}
private void RealizeSequencePoints()
{
if (this.SeqPointsOpt != null)
{
// we keep track of the latest sequence point location to make sure
// we don't emit multiple sequence points for the same location
int lastOffset = -1;
ArrayBuilder <RawSequencePoint> seqPoints = ArrayBuilder <RawSequencePoint> .GetInstance();
foreach (var seqPoint in this.SeqPointsOpt)
{
int offset = this.GetILOffsetFromMarker(seqPoint.ILMarker);
if (offset >= 0)
{
// valid IL offset
if (lastOffset != offset)
{
Debug.Assert(lastOffset < offset);
// if there are any sequence points, there must
// be a sequence point at offset 0.
Debug.Assert((lastOffset >= 0) || (offset == 0));
// the first sequence point on tree/offset location
lastOffset = offset;
seqPoints.Add(seqPoint);
}
else
{
// override previous sequence point at the same location
seqPoints[seqPoints.Count - 1] = seqPoint;
}
}
}
if (seqPoints.Count > 0)
{
this.RealizedSequencePoints = SequencePointList.Create(seqPoints, this);
}
seqPoints.Free();
}
}
// Find the document for the first non-hidden sequence point (issue #4370)
// Returns null if a real sequence point was not found.
private FileLinePositionSpan?FindFirstRealSequencePoint()
{
SequencePointList current = this;
while (current != null)
{
foreach (var offsetAndSpan in current._points)
{
TextSpan span = offsetAndSpan.Span;
bool isHidden = span == RawSequencePoint.HiddenSequencePointSpan;
if (!isHidden)
{
FileLinePositionSpan fileLinePositionSpan = current._tree.GetMappedLineSpanAndVisibility(span, out isHidden);
if (!isHidden)
{
return(fileLinePositionSpan);
}
}
}
current = current._next;
}
return(null);
}
/// <summary>
/// Get all the sequence points, possibly mapping them using #line/ExternalSource directives, and mapping
/// file names to debug documents with the given mapping function.
/// </summary>
/// <param name="documentProvider">Function that maps file paths to CCI debug documents</param>
/// <param name="builder">where sequence points should be deposited</param>
public void GetSequencePoints(
DebugDocumentProvider documentProvider,
ArrayBuilder <Cci.SequencePoint> builder)
{
bool lastPathIsMapped = false;
string lastPath = null;
Cci.DebugSourceDocument lastDebugDocument = null;
FileLinePositionSpan?firstReal = FindFirstRealSequencePoint();
if (!firstReal.HasValue)
{
return;
}
lastPath = firstReal.Value.Path;
lastPathIsMapped = firstReal.Value.HasMappedPath;
lastDebugDocument = documentProvider(lastPath, basePath: lastPathIsMapped ? this._tree.FilePath : null);
SequencePointList current = this;
while (current != null)
{
SyntaxTree currentTree = current._tree;
foreach (var offsetAndSpan in current._points)
{
TextSpan span = offsetAndSpan.Span;
// if it's a hidden sequence point, or a sequence point with syntax that points to a position that is inside
// of a hidden region (can be defined with #line hidden (C#) or implicitly by #ExternalSource (VB), make it
// a hidden sequence point.
bool isHidden = span == RawSequencePoint.HiddenSequencePointSpan;
FileLinePositionSpan fileLinePositionSpan = default;
if (!isHidden)
{
fileLinePositionSpan = currentTree.GetMappedLineSpanAndVisibility(span, out isHidden);
}
if (isHidden)
{
if (lastPath == null)
{
lastPath = currentTree.FilePath;
lastDebugDocument = documentProvider(lastPath, basePath: null);
}
if (lastDebugDocument != null)
{
builder.Add(new Cci.SequencePoint(
lastDebugDocument,
offset: offsetAndSpan.Offset,
startLine: Cci.SequencePoint.HiddenLine,
startColumn: 0,
endLine: Cci.SequencePoint.HiddenLine,
endColumn: 0));
}
}
else
{
if (lastPath != fileLinePositionSpan.Path || lastPathIsMapped != fileLinePositionSpan.HasMappedPath)
{
lastPath = fileLinePositionSpan.Path;
lastPathIsMapped = fileLinePositionSpan.HasMappedPath;
lastDebugDocument = documentProvider(lastPath, basePath: lastPathIsMapped ? currentTree.FilePath : null);
}
if (lastDebugDocument != null)
{
int startLine = (fileLinePositionSpan.StartLinePosition.Line == -1) ? 0 : fileLinePositionSpan.StartLinePosition.Line + 1;
int endLine = (fileLinePositionSpan.EndLinePosition.Line == -1) ? 0 : fileLinePositionSpan.EndLinePosition.Line + 1;
int startColumn = fileLinePositionSpan.StartLinePosition.Character + 1;
int endColumn = fileLinePositionSpan.EndLinePosition.Character + 1;
// Trim column number if necessary.
// Column must be in range [0, 0xffff) and end column must be greater than start column if on the same line.
// The Portable PDB specifies 0x10000, but StarkPlatform.Reflection.Metadata reader has an off-by-one error.
// Windows PDBs allow the same range.
const int MaxColumn = ushort.MaxValue - 1;
if (startColumn > MaxColumn)
{
startColumn = (startLine == endLine) ? MaxColumn - 1 : MaxColumn;
}
if (endColumn > MaxColumn)
{
endColumn = MaxColumn;
}
builder.Add(new Cci.SequencePoint(
lastDebugDocument,
offset: offsetAndSpan.Offset,
startLine: startLine,
startColumn: (ushort)startColumn,
endLine: endLine,
endColumn: (ushort)endColumn
));
}
}
}
current = current._next;
}
}