internal static EvaluationContext CreateMethodContext(
CSharpCompilation compilation,
object symReader,
Guid moduleVersionId,
int methodToken,
int methodVersion,
int ilOffset,
int localSignatureToken)
{
Debug.Assert(MetadataTokens.Handle(methodToken).Kind == HandleKind.MethodDefinition);
var typedSymReader = (ISymUnmanagedReader)symReader;
var allScopes = ArrayBuilder<ISymUnmanagedScope>.GetInstance();
var containingScopes = ArrayBuilder<ISymUnmanagedScope>.GetInstance();
typedSymReader.GetScopes(methodToken, methodVersion, ilOffset, IsLocalScopeEndInclusive, allScopes, containingScopes);
var methodContextReuseConstraints = allScopes.GetReuseConstraints(moduleVersionId, methodToken, methodVersion, ilOffset, IsLocalScopeEndInclusive);
allScopes.Free();
var localNames = containingScopes.GetLocalNames();
var inScopeHoistedLocals = InScopeHoistedLocals.Empty;
var methodDebugInfo = default(MethodDebugInfo);
if (typedSymReader != null)
{
try
{
// TODO (https://github.com/dotnet/roslyn/issues/702): switch on the type of typedSymReader and call the appropriate helper.
methodDebugInfo = typedSymReader.GetMethodDebugInfo(methodToken, methodVersion, localNames.FirstOrDefault());
var inScopeHoistedLocalIndices = methodDebugInfo.GetInScopeHoistedLocalIndices(ilOffset, ref methodContextReuseConstraints);
inScopeHoistedLocals = new CSharpInScopeHoistedLocals(inScopeHoistedLocalIndices);
}
catch (InvalidOperationException)
{
// bad CDI, ignore
}
}
var methodHandle = (MethodDefinitionHandle)MetadataTokens.Handle(methodToken);
var currentFrame = compilation.GetMethod(moduleVersionId, methodHandle);
Debug.Assert((object)currentFrame != null);
var metadataDecoder = new MetadataDecoder((PEModuleSymbol)currentFrame.ContainingModule, currentFrame);
var localInfo = metadataDecoder.GetLocalInfo(localSignatureToken);
var localBuilder = ArrayBuilder<LocalSymbol>.GetInstance();
var sourceAssembly = compilation.SourceAssembly;
GetLocals(localBuilder, currentFrame, localNames, localInfo, methodDebugInfo.DynamicLocalMap, sourceAssembly);
GetConstants(localBuilder, currentFrame, containingScopes, metadataDecoder, methodDebugInfo.DynamicLocalConstantMap, sourceAssembly);
containingScopes.Free();
var locals = localBuilder.ToImmutableAndFree();
return new EvaluationContext(
methodContextReuseConstraints,
compilation,
metadataDecoder,
currentFrame,
locals,
inScopeHoistedLocals,
methodDebugInfo);
}
private static EvaluationContext CreateMethodContext(
CSharpCompilation compilation,
object symReader,
Guid moduleVersionId,
int methodToken,
int methodVersion,
int ilOffset,
int localSignatureToken)
{
var methodHandle = (MethodDefinitionHandle)MetadataTokens.Handle(methodToken);
var localSignatureHandle = (localSignatureToken != 0) ? (StandaloneSignatureHandle)MetadataTokens.Handle(localSignatureToken) : default(StandaloneSignatureHandle);
var currentFrame = compilation.GetMethod(moduleVersionId, methodHandle);
Debug.Assert((object)currentFrame != null);
var sourceAssembly = compilation.SourceAssembly;
var symbolProvider = new CSharpEESymbolProvider(sourceAssembly, (PEModuleSymbol)currentFrame.ContainingModule, currentFrame);
var metadataDecoder = new MetadataDecoder((PEModuleSymbol)currentFrame.ContainingModule, currentFrame);
var localInfo = metadataDecoder.GetLocalInfo(localSignatureHandle);
var typedSymReader = (ISymUnmanagedReader3)symReader;
var inScopeHoistedLocals = InScopeHoistedLocals.Empty;
var debugInfo = MethodDebugInfo<TypeSymbol, LocalSymbol>.ReadMethodDebugInfo(typedSymReader, symbolProvider, methodToken, methodVersion, ilOffset, isVisualBasicMethod: false);
var reuseSpan = debugInfo.ReuseSpan;
var localsBuilder = ArrayBuilder<LocalSymbol>.GetInstance();
MethodDebugInfo<TypeSymbol, LocalSymbol>.GetLocals(localsBuilder, symbolProvider, debugInfo.LocalVariableNames, localInfo, debugInfo.DynamicLocalMap);
if (!debugInfo.HoistedLocalScopeRecords.IsDefaultOrEmpty)
{
inScopeHoistedLocals = new CSharpInScopeHoistedLocals(debugInfo.GetInScopeHoistedLocalIndices(ilOffset, ref reuseSpan));
}
localsBuilder.AddRange(debugInfo.LocalConstants);
return new EvaluationContext(
new MethodContextReuseConstraints(moduleVersionId, methodToken, methodVersion, reuseSpan),
compilation,
currentFrame,
localsBuilder.ToImmutableAndFree(),
inScopeHoistedLocals,
debugInfo);
}