public override SourceLocation SourceLocationForManagedCode(uint methodMetadataToken, int ilOffset)
{
MethodDefinitionHandle methodDefinitionHandle = (MethodDefinitionHandle)MetadataTokens.Handle((int)methodMetadataToken);
MethodDebugInformationHandle methodDebugInfoHandle = methodDefinitionHandle.ToDebugInformationHandle();
MethodDebugInformation methodDebugInfo = _metaData.GetMethodDebugInformation(methodDebugInfoHandle);
int methodToken = MetadataTokens.GetToken(methodDebugInfoHandle.ToDefinitionHandle());
SequencePoint lastSequencePoint = default(SequencePoint);
foreach (SequencePoint sequencePoint in methodDebugInfo.GetSequencePoints())
{
if (sequencePoint.Offset > ilOffset)
{
if (lastSequencePoint.Document.IsNil)
{
lastSequencePoint = sequencePoint;
}
break;
}
lastSequencePoint = sequencePoint;
}
if (lastSequencePoint.Document.IsNil)
{
return(null);
}
return(new SourceLocation(GetSourceFile(lastSequencePoint.Document), lastSequencePoint.StartLine));
}
// TODO: Copied from PortablePdb. Share.
public static AsyncMethodData ReadAsyncMethodData(MetadataReader metadataReader, MethodDebugInformationHandle debugHandle)
{
var reader = metadataReader;
var body = reader.GetMethodDebugInformation(debugHandle);
var kickoffMethod = body.GetStateMachineKickoffMethod();
if (kickoffMethod.IsNil)
{
return(AsyncMethodData.None);
}
var value = reader.GetCustomDebugInformation(debugHandle.ToDefinitionHandle(), MethodSteppingInformationBlobId);
if (value.IsNil)
{
return(AsyncMethodData.None);
}
var blobReader = reader.GetBlobReader(value);
long catchHandlerOffset = blobReader.ReadUInt32();
if (catchHandlerOffset > (uint)int.MaxValue + 1)
{
throw new BadImageFormatException();
}
var yieldOffsets = ImmutableArray.CreateBuilder <int>();
var resultOffsets = ImmutableArray.CreateBuilder <int>();
var resumeMethods = ImmutableArray.CreateBuilder <int>();
while (blobReader.RemainingBytes > 0)
{
uint yieldOffset = blobReader.ReadUInt32();
if (yieldOffset > int.MaxValue)
{
throw new BadImageFormatException();
}
uint resultOffset = blobReader.ReadUInt32();
if (resultOffset > int.MaxValue)
{
throw new BadImageFormatException();
}
yieldOffsets.Add((int)yieldOffset);
resultOffsets.Add((int)resultOffset);
resumeMethods.Add(MethodDefToken(blobReader.ReadCompressedInteger()));
}
return(new AsyncMethodData(
kickoffMethod,
(int)(catchHandlerOffset - 1),
yieldOffsets.ToImmutable(),
resultOffsets.ToImmutable(),
resumeMethods.ToImmutable()));
}
public Method?GetMethod(MethodDebugInformationHandle h)
{
var methodToken = MetadataTokens.GetToken(h.ToDefinitionHandle());
var method = reader.GetMethod(methodToken);
if (method != null)
{
if (method.GetSequencePointCount(out var count) != 0 || count == 0)
{
return(null);
}
var s = method.GetSequencePoints()
.Where(sp => !sp.IsHidden)
.Select(sp => new SequencePoint(sp.Offset, new Location(
new Document(sp.Document), sp.StartLine, sp.StartColumn, sp.EndLine, sp.EndColumn)))
.ToArray();
return(s.Any() ? new Method(s) : null);
}
return(null);
}
/// <summary>
/// Initializes a new instance of the <see cref="PdbFunction"/> class.
/// </summary>
/// <param name="pdbFile">Portable PDB file reader.</param>
/// <param name="handle">Our metadata reader handle.</param>
internal PdbFunction(PdbFile pdbFile, MethodDebugInformationHandle handle)
{
PdbFile = pdbFile;
methodDebugInformationCache = SimpleCache.CreateStruct(() => pdbFile.Reader.GetMethodDebugInformation(handle));
localScopesCache = SimpleCache.CreateStruct(() =>
{
var localScopes = pdbFile.Reader.GetLocalScopes(handle);
IPdbLocalScope[] scopes = new IPdbLocalScope[localScopes.Count];
int i = 0;
foreach (var l in localScopes)
{
scopes[i++] = new PdbLocalScope(this, l);
}
return(scopes);
});
sequencePointsCache = SimpleCache.CreateStruct(() =>
{
var sequencePoints = MethodDebugInformation.GetSequencePoints();
return(sequencePoints.Select(sp => new PdbSequencePoint(this, sp)).OfType <IPdbSequencePoint>().ToArray());
});
Token = System.Reflection.Metadata.Ecma335.MetadataTokens.GetToken(handle.ToDefinitionHandle());
}