/// <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;
}
}
internal int GetOrAddDocument(DebugSourceDocument document)
{
return(GetOrAddDocument(document, _documentIndex));
}
