/// <summary>
/// Helper method to return source line number and source file name for given IL offset and method token.
/// </summary>
/// <param name="symbolReaderHandle">symbol reader handle returned by LoadSymbolsForModule</param>
/// <param name="methodToken">method token</param>
/// <param name="ilOffset">IL offset</param>
/// <param name="lineNumber">source line number return</param>
/// <param name="fileName">source file name return</param>
/// <returns> true if information is available</returns>
private static bool GetSourceLineByILOffset(IntPtr symbolReaderHandle, int methodToken, long ilOffset, out int lineNumber, out string fileName)
{
Debug.Assert(symbolReaderHandle != IntPtr.Zero);
lineNumber = 0;
fileName = null;
GCHandle gch = GCHandle.FromIntPtr(symbolReaderHandle);
MetadataReader reader = ((OpenedReader)gch.Target).Reader;
try
{
Handle handle = MetadataTokens.Handle(methodToken);
if (handle.Kind != HandleKind.MethodDefinition)
{
return(false);
}
MethodDebugInformationHandle methodDebugHandle = ((MethodDefinitionHandle)handle).ToDebugInformationHandle();
if (methodDebugHandle.IsNil)
{
return(false);
}
MethodDebugInformation methodDebugInfo = reader.GetMethodDebugInformation(methodDebugHandle);
SequencePointCollection sequencePoints = methodDebugInfo.GetSequencePoints();
SequencePoint nearestPoint = sequencePoints.GetEnumerator().Current;
foreach (SequencePoint point in sequencePoints)
{
if (point.Offset < ilOffset)
{
nearestPoint = point;
}
else
{
if (point.Offset == ilOffset)
{
nearestPoint = point;
}
if (nearestPoint.StartLine == 0 || nearestPoint.StartLine == SequencePoint.HiddenLine)
{
return(false);
}
break;
}
}
lineNumber = nearestPoint.StartLine;
fileName = reader.GetString(reader.GetDocument(nearestPoint.Document).Name);
return(true);
}
catch
{
}
return(false);
}
/// <summary>
/// Helper method to return source line number and source file name for given IL offset and method token.
/// </summary>
/// <param name="assemblyFileName">file name of the assembly</param>
/// <param name="methToken">method token</param>
/// <param name="ilOffset">IL offset</param>
/// <param name="lineNumber">source line number return</param>
/// <param name="fileName">source file name return</param>
/// <returns> true if information is available</returns>
private static bool GetSourceLineByILOffset(string assemblyFileName, int methodToken, long ilOffset, out int lineNumber, out string fileName)
{
MetadataReader peReader, pdbReader;
lineNumber = 0;
fileName = null;
try
{
if (!GetReaders(assemblyFileName, out peReader, out pdbReader))
{
return(false);
}
Handle handle = MetadataTokens.Handle(methodToken);
if (handle.Kind != HandleKind.MethodDefinition)
{
return(false);
}
MethodDebugInformationHandle methodDebugHandle =
((MethodDefinitionHandle)handle).ToDebugInformationHandle();
MethodDebugInformation methodDebugInfo = pdbReader.GetMethodDebugInformation(methodDebugHandle);
SequencePointCollection sequencePoints = methodDebugInfo.GetSequencePoints();
SequencePoint nearestPoint = sequencePoints.GetEnumerator().Current;
foreach (SequencePoint point in sequencePoints)
{
if (point.Offset < ilOffset)
{
nearestPoint = point;
}
else
{
if (point.Offset == ilOffset)
{
nearestPoint = point;
}
if (nearestPoint.StartLine == 0 || nearestPoint.StartLine == SequencePoint.HiddenLine)
{
return(false);
}
lineNumber = nearestPoint.StartLine;
fileName = pdbReader.GetString(pdbReader.GetDocument(nearestPoint.Document).Name);
return(true);
}
}
return(false);
}
finally
{
peReader = null;
pdbReader = null;
}
}
/// <summary>
/// Returns source line number and source file name for given IL offset and method token.
/// </summary>
/// <param name="symbolReaderHandle">symbol reader handle returned by LoadSymbolsForModule</param>
/// <param name="methodToken">method token</param>
/// <param name="ilOffset">IL offset</param>
/// <param name="sequencePoint">sequence point return</param>
/// <returns> true if information is available</returns>
private static bool GetSequencePointByILOffset(IntPtr symbolReaderHandle, int methodToken, long ilOffset, out DbgSequencePoint sequencePoint)
{
Debug.Assert(symbolReaderHandle != IntPtr.Zero);
sequencePoint.document = IntPtr.Zero;
sequencePoint.startLine = 0;
sequencePoint.startColumn = 0;
sequencePoint.endLine = 0;
sequencePoint.endColumn = 0;
sequencePoint.offset = 0;
try
{
GCHandle gch = GCHandle.FromIntPtr(symbolReaderHandle);
MetadataReader reader = ((OpenedReader)gch.Target).Reader;
Handle handle = MetadataTokens.Handle(methodToken);
if (handle.Kind != HandleKind.MethodDefinition)
{
return(false);
}
MethodDebugInformationHandle methodDebugHandle = ((MethodDefinitionHandle)handle).ToDebugInformationHandle();
if (methodDebugHandle.IsNil)
{
return(false);
}
MethodDebugInformation methodDebugInfo = reader.GetMethodDebugInformation(methodDebugHandle);
SequencePointCollection sequencePoints = methodDebugInfo.GetSequencePoints();
SequencePoint nearestPoint = sequencePoints.GetEnumerator().Current;
bool found = false;
foreach (SequencePoint point in sequencePoints)
{
if (found && point.Offset > ilOffset)
{
break;
}
if (!point.IsHidden)
{
nearestPoint = point;
found = true;
}
}
if (!found || nearestPoint.StartLine == 0)
{
return(false);
}
var fileName = reader.GetString(reader.GetDocument(nearestPoint.Document).Name);
sequencePoint.document = Marshal.StringToBSTR(fileName);
sequencePoint.startLine = nearestPoint.StartLine;
sequencePoint.startColumn = nearestPoint.StartColumn;
sequencePoint.endLine = nearestPoint.EndLine;
sequencePoint.endColumn = nearestPoint.EndColumn;
sequencePoint.offset = nearestPoint.Offset;
fileName = null;
return(true);
}
catch
{
}
return(false);
}
