public MethodBody(
byte[] ilBits,
ushort maxStack,
Cci.IMethodDefinition parent,
ImmutableArray <LocalDefinition> locals,
SequencePointList sequencePoints,
DebugDocumentProvider debugDocumentProvider,
ImmutableArray <Cci.ExceptionHandlerRegion> exceptionHandlers,
ImmutableArray <LocalScope> localScopes,
Cci.CustomDebugInfoKind customDebugInfoKind,
bool hasDynamicLocalVariables,
ImmutableArray <NamespaceScope> namespaceScopes = default(ImmutableArray <NamespaceScope>),
string iteratorClassName = null,
ImmutableArray <LocalScope> iteratorScopes = default(ImmutableArray <LocalScope>),
Cci.AsyncMethodBodyDebugInfo asyncMethodDebugInfo = null)
{
this.ilBits = ilBits;
this.asyncMethodDebugInfo = asyncMethodDebugInfo;
this.maxStack = maxStack;
this.parent = parent;
this.locals = locals;
this.sequencePoints = sequencePoints;
this.debugDocumentProvider = debugDocumentProvider;
this.exceptionHandlers = exceptionHandlers;
this.localScopes = localScopes;
this.customDebugInfoKind = customDebugInfoKind;
this.hasDynamicLocalVariables = hasDynamicLocalVariables;
this.namespaceScopes = namespaceScopes.IsDefault ? ImmutableArray <NamespaceScope> .Empty : namespaceScopes;
this.iteratorClassName = iteratorClassName;
this.iteratorScopes = iteratorScopes.IsDefault ? ImmutableArray <LocalScope> .Empty : iteratorScopes;
}
public MethodBody(
byte[] ilBits,
ushort maxStack,
Cci.IMethodDefinition parent,
ImmutableArray<LocalDefinition> locals,
SequencePointList sequencePoints,
DebugDocumentProvider debugDocumentProvider,
ImmutableArray<Cci.ExceptionHandlerRegion> exceptionHandlers,
ImmutableArray<LocalScope> localScopes,
Cci.CustomDebugInfoKind customDebugInfoKind,
bool hasDynamicLocalVariables,
ImmutableArray<NamespaceScope> namespaceScopes = default(ImmutableArray<NamespaceScope>),
string iteratorClassName = null,
ImmutableArray<LocalScope> iteratorScopes = default(ImmutableArray<LocalScope>),
Cci.AsyncMethodBodyDebugInfo asyncMethodDebugInfo = null)
{
this.ilBits = ilBits;
this.asyncMethodDebugInfo = asyncMethodDebugInfo;
this.maxStack = maxStack;
this.parent = parent;
this.locals = locals;
this.sequencePoints = sequencePoints;
this.debugDocumentProvider = debugDocumentProvider;
this.exceptionHandlers = exceptionHandlers;
this.localScopes = localScopes;
this.customDebugInfoKind = customDebugInfoKind;
this.hasDynamicLocalVariables = hasDynamicLocalVariables;
this.namespaceScopes = namespaceScopes.IsDefault ? ImmutableArray<NamespaceScope>.Empty : namespaceScopes;
this.iteratorClassName = iteratorClassName;
this.iteratorScopes = iteratorScopes.IsDefault ? ImmutableArray<LocalScope>.Empty : iteratorScopes;
}
private void SerializeAsyncMethodSteppingInfo(AsyncMethodBodyDebugInfo asyncInfo, MethodDefinitionHandle moveNextMethod)
{
Debug.Assert(asyncInfo.ResumeOffsets.Length == asyncInfo.YieldOffsets.Length);
Debug.Assert(asyncInfo.CatchHandlerOffset >= -1);
var writer = new BlobBuilder();
writer.WriteUInt32((uint)((long)asyncInfo.CatchHandlerOffset + 1));
for (int i = 0; i < asyncInfo.ResumeOffsets.Length; i++)
{
writer.WriteUInt32((uint)asyncInfo.YieldOffsets[i]);
writer.WriteUInt32((uint)asyncInfo.ResumeOffsets[i]);
writer.WriteCompressedInteger(MetadataTokens.GetRowNumber(moveNextMethod));
}
_debugMetadataOpt.AddCustomDebugInformation(
parent: moveNextMethod,
kind: _debugMetadataOpt.GetOrAddGuid(PortableCustomDebugInfoKinds.AsyncMethodSteppingInformationBlob),
value: _debugMetadataOpt.GetOrAddBlob(writer));
}
private void SerializeAsyncMethodSteppingInfo(AsyncMethodBodyDebugInfo asyncInfo, int moveNextMethodRid)
{
Debug.Assert(asyncInfo.ResumeOffsets.Length == asyncInfo.YieldOffsets.Length);
Debug.Assert(asyncInfo.CatchHandlerOffset >= -1);
var writer = new BlobBuilder();
writer.WriteUInt32((uint)((long)asyncInfo.CatchHandlerOffset + 1));
for (int i = 0; i < asyncInfo.ResumeOffsets.Length; i++)
{
writer.WriteUInt32((uint)asyncInfo.YieldOffsets[i]);
writer.WriteUInt32((uint)asyncInfo.ResumeOffsets[i]);
writer.WriteCompressedInteger((uint)moveNextMethodRid);
}
_customDebugInformationTable.Add(new CustomDebugInformationRow
{
Parent = HasCustomDebugInformation(HasCustomDebugInformationTag.MethodDef, moveNextMethodRid),
Kind = (uint)_debugHeapsOpt.GetGuidIndex(PortableCustomDebugInfoKinds.AsyncMethodSteppingInformationBlob),
Value = _debugHeapsOpt.GetBlobIndex(writer),
});
}
internal static MethodBody GenerateMethodBody(TypeCompilationState compilationState, MethodSymbol method, BoundStatement block, DiagnosticBag diagnostics,
bool optimize, DebugDocumentProvider debugDocumentProvider, ImmutableArray<NamespaceScope> namespaceScopes)
{
// Note: don't call diagnostics.HasAnyErrors() in release; could be expensive if compilation has many warnings.
Debug.Assert(!diagnostics.HasAnyErrors(), "Running code generator when errors exist might be dangerous; code generator not well hardened");
bool emitSequencePoints = !namespaceScopes.IsDefault && !method.IsAsync;
var module = compilationState.ModuleBuilder;
var compilation = module.Compilation;
var localSlotManager = module.CreateLocalSlotManager(method);
ILBuilder builder = new ILBuilder(module, localSlotManager, optimize);
DiagnosticBag diagnosticsForThisMethod = DiagnosticBag.GetInstance();
try
{
AsyncMethodBodyDebugInfo asyncDebugInfo = null;
if ((object)method.AsyncKickoffMethod == null) // is this the MoveNext of an async method?
{
CodeGen.CodeGenerator.Run(
method, block, builder, module, diagnosticsForThisMethod, optimize, emitSequencePoints);
}
else
{
int asyncCatchHandlerOffset;
ImmutableArray<int> asyncYieldPoints;
ImmutableArray<int> asyncResumePoints;
CodeGen.CodeGenerator.Run(
method, block, builder, module, diagnosticsForThisMethod, optimize, emitSequencePoints,
out asyncCatchHandlerOffset, out asyncYieldPoints, out asyncResumePoints);
asyncDebugInfo = new AsyncMethodBodyDebugInfo(method.AsyncKickoffMethod, asyncCatchHandlerOffset, asyncYieldPoints, asyncResumePoints);
}
var localVariables = builder.LocalSlotManager.LocalsInOrder();
if (localVariables.Length > 0xFFFE)
{
diagnosticsForThisMethod.Add(ErrorCode.ERR_TooManyLocals, method.Locations.First());
}
if (diagnosticsForThisMethod.HasAnyErrors())
{
// we are done here. Since there were errors we should not emit anything.
return null;
}
// We will only save the IL builders when running tests.
if (module.SaveTestData)
{
module.SetMethodTestData(method, builder.GetSnapshot());
}
// Only compiler-generated MoveNext methods have iterator scopes. See if this is one.
bool hasIteratorScopes =
method.Locations.IsEmpty && method.Name == "MoveNext" &&
(method.ExplicitInterfaceImplementations.Contains(compilation.GetSpecialTypeMember(SpecialMember.System_Collections_IEnumerator__MoveNext) as MethodSymbol) ||
method.ExplicitInterfaceImplementations.Contains(compilation.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IAsyncStateMachine_MoveNext) as MethodSymbol));
var iteratorScopes = hasIteratorScopes ? builder.GetIteratorScopes() : ImmutableArray<LocalScope>.Empty;
var iteratorOrAsyncImplementation = compilationState.GetIteratorOrAsyncImplementationClass(method);
return new MethodBody(
builder.RealizedIL,
builder.MaxStack,
method,
localVariables,
builder.RealizedSequencePoints,
debugDocumentProvider,
builder.RealizedExceptionHandlers,
builder.GetAllScopes(),
Microsoft.Cci.CustomDebugInfoKind.CSharpStyle,
builder.HasDynamicLocal,
namespaceScopes,
(object)iteratorOrAsyncImplementation == null ? null : iteratorOrAsyncImplementation.MetadataName,
iteratorScopes,
asyncMethodDebugInfo: asyncDebugInfo
);
}
finally
{
// Basic blocks contain poolable builders for IL and sequence points. Free those back
// to their pools.
builder.FreeBasicBlocks();
// Remember diagnostics.
diagnostics.AddRange(diagnosticsForThisMethod);
diagnosticsForThisMethod.Free();
}
}
public void SerializeDebugInfo(IMethodBody methodBody, uint localSignatureToken, CustomDebugInfoWriter customDebugInfoWriter)
{
Debug.Assert(_metadataWriter != null);
bool isIterator = methodBody.StateMachineTypeName != null;
bool emitDebugInfo = isIterator || methodBody.HasAnySequencePoints;
if (!emitDebugInfo)
{
return;
}
uint methodToken = _metadataWriter.GetMethodToken(methodBody.MethodDefinition);
OpenMethod(methodToken);
var localScopes = methodBody.LocalScopes;
// CCI originally didn't have the notion of the default scope that is open
// when a method is opened. In order to reproduce CSC PDBs, this must be added. Otherwise
// a seemingly unnecessary scope that contains only other scopes is put in the PDB.
if (localScopes.Length > 0)
{
this.DefineScopeLocals(localScopes[0], localSignatureToken);
}
// NOTE: This is an attempt to match Dev10's apparent behavior. For iterator methods (i.e. the method
// that appears in source, not the synthesized ones), Dev10 only emits the ForwardIterator and IteratorLocal
// custom debug info (e.g. there will be no information about the usings that were in scope).
if (!isIterator)
{
IMethodDefinition forwardToMethod;
if (customDebugInfoWriter.ShouldForwardNamespaceScopes(Context, methodBody, methodToken, out forwardToMethod))
{
if (forwardToMethod != null)
{
UsingNamespace("@" + _metadataWriter.GetMethodToken(forwardToMethod), methodBody.MethodDefinition);
}
// otherwise, the forwarding is done via custom debug info
}
else
{
this.DefineNamespaceScopes(methodBody);
}
}
DefineLocalScopes(localScopes, localSignatureToken);
EmitSequencePoints(methodBody.GetSequencePoints());
AsyncMethodBodyDebugInfo asyncDebugInfo = methodBody.AsyncDebugInfo;
if (asyncDebugInfo != null)
{
SetAsyncInfo(
methodToken,
_metadataWriter.GetMethodToken(asyncDebugInfo.KickoffMethod),
asyncDebugInfo.CatchHandlerOffset,
asyncDebugInfo.YieldOffsets,
asyncDebugInfo.ResumeOffsets);
}
var compilationOptions = Context.ModuleBuilder.CommonCompilation.Options;
// We need to avoid emitting CDI DynamicLocals = 5 and EditAndContinueLocalSlotMap = 6 for files processed by WinMDExp until
// bug #1067635 is fixed and available in SDK.
bool suppressNewCustomDebugInfo = !compilationOptions.ExtendedCustomDebugInformation ||
(compilationOptions.OutputKind == OutputKind.WindowsRuntimeMetadata);
bool emitEncInfo = compilationOptions.EnableEditAndContinue && !_metadataWriter.IsFullMetadata;
bool emitExternNamespaces;
byte[] blob = customDebugInfoWriter.SerializeMethodDebugInfo(Context, methodBody, methodToken, emitEncInfo, suppressNewCustomDebugInfo, out emitExternNamespaces);
if (blob != null)
{
DefineCustomMetadata("MD2", blob);
}
if (emitExternNamespaces)
{
this.DefineAssemblyReferenceAliases();
}
// TODO: it's not clear why we are closing a scope here with IL length:
CloseScope(methodBody.IL.Length);
CloseMethod();
}
/// <summary>
/// Generates method body that calls another method.
/// Used for wrapping a method call into a method, e.g. an entry point.
/// </summary>
internal static MethodBody GenerateMethodBody(
PEModuleBuilder moduleBuilder,
MethodSymbol routine,
Action <ILBuilder> builder,
VariableSlotAllocator variableSlotAllocatorOpt,
DiagnosticBag diagnostics,
bool emittingPdb)
{
var compilation = moduleBuilder.Compilation;
var localSlotManager = new LocalSlotManager(variableSlotAllocatorOpt);
var optimizations = compilation.Options.OptimizationLevel;
DebugDocumentProvider debugDocumentProvider = null;
if (emittingPdb)
{
debugDocumentProvider = (path, basePath) => moduleBuilder.GetOrAddDebugDocument(path, basePath, CreateDebugDocumentForFile);
}
ILBuilder il = new ILBuilder(moduleBuilder, localSlotManager, optimizations);
try
{
Cci.AsyncMethodBodyDebugInfo asyncDebugInfo = null;
builder(il);
//
il.Realize();
//
var localVariables = il.LocalSlotManager.LocalsInOrder();
if (localVariables.Length > 0xFFFE)
{
//diagnosticsForThisMethod.Add(ErrorCode.ERR_TooManyLocals, method.Locations.First());
}
//if (diagnosticsForThisMethod.HasAnyErrors())
//{
// // we are done here. Since there were errors we should not emit anything.
// return null;
//}
//// We will only save the IL builders when running tests.
//if (moduleBuilder.SaveTestData)
//{
// moduleBuilder.SetMethodTestData(method, builder.GetSnapshot());
//}
// Only compiler-generated MoveNext methods have iterator scopes. See if this is one.
var stateMachineHoistedLocalScopes = default(ImmutableArray <Cci.StateMachineHoistedLocalScope>);
//if (isStateMachineMoveNextMethod)
//{
// stateMachineHoistedLocalScopes = builder.GetHoistedLocalScopes();
//}
var stateMachineHoistedLocalSlots = default(ImmutableArray <EncHoistedLocalInfo>);
var stateMachineAwaiterSlots = default(ImmutableArray <Cci.ITypeReference>);
//if (optimizations == OptimizationLevel.Debug && stateMachineTypeOpt != null)
//{
// Debug.Assert(method.IsAsync || method.IsIterator);
// GetStateMachineSlotDebugInfo(moduleBuilder, moduleBuilder.GetSynthesizedFields(stateMachineTypeOpt), variableSlotAllocatorOpt, diagnosticsForThisMethod, out stateMachineHoistedLocalSlots, out stateMachineAwaiterSlots);
// Debug.Assert(!diagnostics.HasAnyErrors());
//}
return(new MethodBody(
il.RealizedIL,
il.MaxStack,
(Cci.IMethodDefinition)routine.PartialDefinitionPart ?? routine,
variableSlotAllocatorOpt?.MethodId ?? new DebugId(0, moduleBuilder.CurrentGenerationOrdinal),
localVariables,
il.RealizedSequencePoints,
debugDocumentProvider,
il.RealizedExceptionHandlers,
il.GetAllScopes(),
il.HasDynamicLocal,
null, // importScopeOpt,
ImmutableArray <LambdaDebugInfo> .Empty, // lambdaDebugInfo,
ImmutableArray <ClosureDebugInfo> .Empty, // closureDebugInfo,
null, //stateMachineTypeOpt?.Name,
stateMachineHoistedLocalScopes,
stateMachineHoistedLocalSlots,
stateMachineAwaiterSlots,
asyncDebugInfo));
}
finally
{
// Basic blocks contain poolable builders for IL and sequence points. Free those back
// to their pools.
il.FreeBasicBlocks();
//// Remember diagnostics.
//diagnostics.AddRange(diagnosticsForThisMethod);
//diagnosticsForThisMethod.Free();
}
}
public void SerializeDebugInfo(IMethodBody methodBody, uint localSignatureToken, CustomDebugInfoWriter customDebugInfoWriter)
{
Debug.Assert(peWriter != null);
bool isIterator = methodBody.IteratorClassName != null;
bool emitDebugInfo = isIterator || methodBody.HasAnyLocations;
if (!emitDebugInfo)
{
return;
}
uint methodToken = peWriter.GetMethodToken(methodBody.MethodDefinition);
OpenMethod(methodToken);
var localScopes = methodBody.LocalScopes;
// CCI originally didn't have the notion of the default scope that is open
// when a method is opened. In order to reproduce CSC PDBs, this must be added. Otherwise
// a seemingly unnecessary scope that contains only other scopes is put in the PDB.
if (localScopes.Length > 0)
{
this.DefineScopeLocals(localScopes[0], localSignatureToken);
}
// NOTE: This is an attempt to match Dev10's apparent behavior. For iterator methods (i.e. the method
// that appears in source, not the synthesized ones), Dev10 only emits the ForwardIterator and IteratorLocal
// custom debug info (e.g. there will be no information about the usings that were in scope).
if (!isIterator)
{
IMethodDefinition forwardToMethod;
if (customDebugInfoWriter.ShouldForwardNamespaceScopes(methodBody, methodToken, out forwardToMethod))
{
if (forwardToMethod != null)
{
string usingString = "@" + peWriter.GetMethodToken(forwardToMethod);
Debug.Assert(!peWriter.IsUsingStringTooLong(usingString));
UsingNamespace(usingString, methodBody.MethodDefinition.Name);
}
// otherwise, the forwarding is done via custom debug info
}
else
{
this.DefineNamespaceScopes(methodBody);
}
}
DefineLocalScopes(localScopes, localSignatureToken);
EmitSequencePoints(methodBody.GetSequencePoints());
AsyncMethodBodyDebugInfo asyncDebugInfo = methodBody.AsyncMethodDebugInfo;
if (asyncDebugInfo != null)
{
SetAsyncInfo(
methodToken,
peWriter.GetMethodToken(asyncDebugInfo.KickoffMethod),
asyncDebugInfo.CatchHandlerOffset,
asyncDebugInfo.YieldOffsets,
asyncDebugInfo.ResumeOffsets);
}
var module = peWriter.Context.Module;
bool emitExternNamespaces;
byte[] blob = customDebugInfoWriter.SerializeMethodDebugInfo(module, methodBody, methodToken, out emitExternNamespaces);
if (blob != null)
{
DefineCustomMetadata("MD2", blob);
}
if (emitExternNamespaces)
{
this.DefineExternAliases(module);
}
// TODO: it's not clear why we are closing a scope here with IL length:
CloseScope((uint)methodBody.IL.Length);
CloseMethod();
}
private void SerializeMethodDebugInfo(IMethodBody bodyOpt, int methodRid, StandaloneSignatureHandle localSignatureHandleOpt, ref LocalVariableHandle lastLocalVariableHandle, ref LocalConstantHandle lastLocalConstantHandle)
{
if (bodyOpt == null)
{
_debugMetadataOpt.AddMethodDebugInformation(default(DocumentHandle), default(BlobHandle));
return;
}
bool isIterator = bodyOpt.StateMachineTypeName != null;
bool emitDebugInfo = isIterator || bodyOpt.HasAnySequencePoints;
if (!emitDebugInfo)
{
_debugMetadataOpt.AddMethodDebugInformation(default(DocumentHandle), default(BlobHandle));
return;
}
MethodDefinitionHandle methodHandle = MetadataTokens.MethodDefinitionHandle(methodRid);
IImportScope bodyImportScope = bodyOpt.ImportScope;
ImportScopeHandle importScopeHandle = (bodyImportScope != null) ? GetImportScopeIndex(bodyImportScope, _scopeIndex) : default(ImportScopeHandle);
// documents & sequence points:
ArrayBuilder <Cci.SequencePoint> sequencePoints = ArrayBuilder <Cci.SequencePoint> .GetInstance();
bodyOpt.GetSequencePoints(sequencePoints);
BlobHandle sequencePointsBlob = SerializeSequencePoints(localSignatureHandleOpt, sequencePoints.ToImmutableAndFree(), _documentIndex, out DocumentHandle singleDocumentHandle);
_debugMetadataOpt.AddMethodDebugInformation(document: singleDocumentHandle, sequencePoints: sequencePointsBlob);
// Unlike native PDB we don't emit an empty root scope.
// scopes are already ordered by StartOffset ascending then by EndOffset descending (the longest scope first).
if (bodyOpt.LocalScopes.Length == 0)
{
// TODO: the compiler should produce a scope for each debuggable method
_debugMetadataOpt.AddLocalScope(
method: methodHandle,
importScope: importScopeHandle,
variableList: NextHandle(lastLocalVariableHandle),
constantList: NextHandle(lastLocalConstantHandle),
startOffset: 0,
length: bodyOpt.IL.Length);
}
else
{
foreach (LocalScope scope in bodyOpt.LocalScopes)
{
_debugMetadataOpt.AddLocalScope(
method: methodHandle,
importScope: importScopeHandle,
variableList: NextHandle(lastLocalVariableHandle),
constantList: NextHandle(lastLocalConstantHandle),
startOffset: scope.StartOffset,
length: scope.Length);
foreach (ILocalDefinition local in scope.Variables)
{
Debug.Assert(local.SlotIndex >= 0);
lastLocalVariableHandle = _debugMetadataOpt.AddLocalVariable(
attributes: local.PdbAttributes,
index: local.SlotIndex,
name: _debugMetadataOpt.GetOrAddString(local.Name));
SerializeLocalInfo(local, lastLocalVariableHandle);
}
foreach (ILocalDefinition constant in scope.Constants)
{
CodeAnalysis.CodeGen.MetadataConstant mdConstant = constant.CompileTimeValue;
Debug.Assert(mdConstant != null);
lastLocalConstantHandle = _debugMetadataOpt.AddLocalConstant(
name: _debugMetadataOpt.GetOrAddString(constant.Name),
signature: SerializeLocalConstantSignature(constant));
SerializeLocalInfo(constant, lastLocalConstantHandle);
}
}
}
AsyncMethodBodyDebugInfo asyncDebugInfo = bodyOpt.AsyncDebugInfo;
if (asyncDebugInfo != null)
{
_debugMetadataOpt.AddStateMachineMethod(
moveNextMethod: methodHandle,
kickoffMethod: GetMethodDefinitionHandle(asyncDebugInfo.KickoffMethod));
SerializeAsyncMethodSteppingInfo(asyncDebugInfo, methodHandle);
}
SerializeStateMachineLocalScopes(bodyOpt, methodHandle);
// delta doesn't need this information - we use information recorded by previous generation emit
if (Context.Module.CommonCompilation.Options.EnableEditAndContinue && IsFullMetadata)
{
SerializeEncMethodDebugInformation(bodyOpt, methodHandle);
}
}