/// <summary>
/// Build an array of GenericDictionaryCell from a NativeParser stream that has the appropriate metadata
/// Return null if there are no cells to describe
/// </summary>
internal unsafe static GenericDictionaryCell[] BuildDictionaryFromMetadataTokensAndContext(TypeBuilder typeBuilder, NativeParser parser, NativeFormatMetadataUnit nativeMetadataUnit, FixupCellMetadataResolver resolver)
{
uint parserStartOffset = parser.Offset;
uint count = parser.GetSequenceCount();
// An empty dictionary isn't interesting
if (count == 0)
return null;
Debug.Assert(count > 0);
TypeLoaderLogger.WriteLine("Parsing dictionary layout @ " + parserStartOffset.LowLevelToString() + " (" + count.LowLevelToString() + " entries)");
GenericDictionaryCell[] dictionary = new GenericDictionaryCell[count];
for (uint i = 0; i < count; i++)
{
MetadataFixupKind fixupKind = (MetadataFixupKind)parser.GetUInt8();
Internal.Metadata.NativeFormat.Handle token = parser.GetUnsigned().AsHandle();
Internal.Metadata.NativeFormat.Handle token2 = new Internal.Metadata.NativeFormat.Handle();
switch (fixupKind)
{
case MetadataFixupKind.GenericConstrainedMethod:
case MetadataFixupKind.NonGenericConstrainedMethod:
case MetadataFixupKind.NonGenericDirectConstrainedMethod:
token2 = parser.GetUnsigned().AsHandle();
break;
}
GenericDictionaryCell cell = CreateCellFromFixupKindAndToken(fixupKind, resolver, token, token2);
cell.Prepare(typeBuilder);
dictionary[i] = cell;
}
return dictionary;
}
/// <summary>
/// Create a single cell to resolve based on a MetadataFixupKind, and the matching tokens
/// </summary>
internal static GenericDictionaryCell CreateCellFromFixupKindAndToken(MetadataFixupKind kind, FixupCellMetadataResolver metadata, Internal.Metadata.NativeFormat.Handle token, Internal.Metadata.NativeFormat.Handle token2)
{
GenericDictionaryCell cell;
switch (kind)
{
case MetadataFixupKind.TypeHandle:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("TypeHandle: " + type.ToString());
cell = new TypeHandleCell() { Type = type };
}
break;
case MetadataFixupKind.ArrayOfTypeHandle:
{
var type = metadata.GetType(token);
var arrayType = type.Context.GetArrayType(type);
TypeLoaderLogger.WriteLine("TypeHandle: " + arrayType.ToString());
cell = new TypeHandleCell() { Type = arrayType };
}
break;
case MetadataFixupKind.VirtualCallDispatch:
{
var method = metadata.GetMethod(token);
var containingType = method.OwningType;
if (containingType.IsInterface)
{
ushort slot;
if (!LazyVTableResolver.TryGetInterfaceSlotNumberFromMethod(method, out slot))
{
Environment.FailFast("Unable to get interface slot while resolving InterfaceCall dictionary cell");
}
TypeLoaderLogger.WriteLine("InterfaceCall: " + containingType.ToString() + ", slot #" + ((int)slot).LowLevelToString());
cell = new InterfaceCallCell() { InterfaceType = containingType, Slot = (int)slot };
}
else
{
// TODO! Implement virtual dispatch cell creation
throw NotImplemented.ByDesign;
}
}
break;
case MetadataFixupKind.MethodDictionary:
{
var genericMethod = metadata.GetMethod(token);
TypeLoaderLogger.WriteLine("MethodDictionary: " + genericMethod.ToString());
cell = new MethodDictionaryCell { GenericMethod = (InstantiatedMethod)genericMethod };
}
break;
case MetadataFixupKind.GcStaticData:
{
var type = metadata.GetType(token);
var staticDataKind = StaticDataKind.Gc;
TypeLoaderLogger.WriteLine("StaticData (" + (staticDataKind == StaticDataKind.Gc ? "Gc" : "NonGc") + ": " + type.ToString());
cell = new StaticDataCell() { DataKind = staticDataKind, Type = type };
}
break;
case MetadataFixupKind.NonGcStaticData:
{
var type = metadata.GetType(token);
var staticDataKind = StaticDataKind.NonGc;
TypeLoaderLogger.WriteLine("StaticData (" + (staticDataKind == StaticDataKind.Gc ? "Gc" : "NonGc") + ": " + type.ToString());
cell = new StaticDataCell() { DataKind = staticDataKind, Type = type };
}
break;
case MetadataFixupKind.DirectGcStaticData:
{
var type = metadata.GetType(token);
var staticDataKind = StaticDataKind.Gc;
TypeLoaderLogger.WriteLine("Direct StaticData (" + (staticDataKind == StaticDataKind.Gc ? "Gc" : "NonGc") + ": " + type.ToString());
cell = new StaticDataCell() { DataKind = staticDataKind, Type = type, Direct = true };
}
break;
case MetadataFixupKind.DirectNonGcStaticData:
{
var type = metadata.GetType(token);
var staticDataKind = StaticDataKind.NonGc;
TypeLoaderLogger.WriteLine("Direct StaticData (" + (staticDataKind == StaticDataKind.Gc ? "Gc" : "NonGc") + ": " + type.ToString());
cell = new StaticDataCell() { DataKind = staticDataKind, Type = type, Direct = true };
}
break;
case MetadataFixupKind.UnwrapNullableType:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("UnwrapNullableType of: " + type.ToString());
cell = new UnwrapNullableTypeCell() { Type = (DefType)type };
}
break;
case MetadataFixupKind.FieldLdToken:
{
var field = metadata.GetField(token);
TypeLoaderLogger.WriteLine("LdToken on: " + field.ToString());
IntPtr fieldName = TypeLoaderEnvironment.Instance.GetNativeFormatStringForString(field.Name);
cell = new FieldLdTokenCell() { FieldName = fieldName, ContainingType = field.OwningType };
}
break;
case MetadataFixupKind.MethodLdToken:
{
var method = metadata.GetMethod(token);
TypeLoaderLogger.WriteLine("LdToken on: " + method.ToString());
var nativeFormatMethod = (TypeSystem.NativeFormat.NativeFormatMethod)method.GetTypicalMethodDefinition();
cell = new MethodLdTokenCell
{
Method = method,
MethodName = IntPtr.Zero,
MethodSignature = RuntimeMethodSignature.CreateFromMethodHandle(nativeFormatMethod.MetadataUnit.RuntimeModule, nativeFormatMethod.Handle.ToInt())
};
}
break;
case MetadataFixupKind.TypeSize:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("TypeSize: " + type.ToString());
cell = new TypeSizeCell() { Type = type };
}
break;
case MetadataFixupKind.FieldOffset:
{
var field = metadata.GetField(token);
TypeLoaderLogger.WriteLine("FieldOffset: " + field.ToString());
cell = new FieldOffsetCell() { Field = field };
}
break;
case MetadataFixupKind.AllocateObject:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("AllocateObject on: " + type.ToString());
cell = new AllocateObjectCell { Type = type };
}
break;
case MetadataFixupKind.DefaultConstructor:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("DefaultConstructor on: " + type.ToString());
cell = new DefaultConstructorCell { Type = type };
}
break;
case MetadataFixupKind.TlsIndex:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("TlsIndex on: " + type.ToString());
cell = new TlsIndexCell { Type = type };
}
break;
case MetadataFixupKind.TlsOffset:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("TlsOffset on: " + type.ToString());
cell = new TlsOffsetCell { Type = type };
}
break;
case MetadataFixupKind.UnboxingStubMethod:
{
var method = metadata.GetMethod(token);
TypeLoaderLogger.WriteLine("Unboxing Stub Method: " + method.ToString());
if (method.OwningType.IsValueType)
{
// If an unboxing stub could exists, that's actually what we want
method = method.Context.ResolveGenericMethodInstantiation(true/* get the unboxing stub */, method.OwningType.GetClosestDefType(), method.NameAndSignature, method.Instantiation, IntPtr.Zero, false);
}
var nativeFormatMethod = (TypeSystem.NativeFormat.NativeFormatMethod)method.GetTypicalMethodDefinition();
cell = new MethodCell
{
Method = method,
MethodSignature = RuntimeMethodSignature.CreateFromMethodHandle(nativeFormatMethod.MetadataUnit.RuntimeModule, nativeFormatMethod.Handle.ToInt())
};
}
break;
case MetadataFixupKind.Method:
{
var method = metadata.GetMethod(token);
TypeLoaderLogger.WriteLine("Method: " + method.ToString());
var nativeFormatMethod = (TypeSystem.NativeFormat.NativeFormatMethod)method.GetTypicalMethodDefinition();
cell = new MethodCell
{
Method = method,
MethodSignature = RuntimeMethodSignature.CreateFromMethodHandle(nativeFormatMethod.MetadataUnit.RuntimeModule, nativeFormatMethod.Handle.ToInt())
};
}
break;
case MetadataFixupKind.CallableMethod:
{
var method = metadata.GetMethod(token);
TypeLoaderLogger.WriteLine("CallableMethod: " + method.ToString());
var nativeFormatMethod = (TypeSystem.NativeFormat.NativeFormatMethod)method.GetTypicalMethodDefinition();
cell = new MethodCell
{
ExactCallableAddressNeeded = true,
Method = method,
MethodSignature = RuntimeMethodSignature.CreateFromMethodHandle(nativeFormatMethod.MetadataUnit.RuntimeModule, nativeFormatMethod.Handle.ToInt())
};
}
break;
case MetadataFixupKind.NonGenericDirectConstrainedMethod:
{
var constraintType = metadata.GetType(token);
var method = metadata.GetMethod(token2);
var constrainedMethodType = method.OwningType;
var constrainedMethodSlot = ComputeConstrainedMethodSlot(method);
TypeLoaderLogger.WriteLine("NonGenericDirectConstrainedMethod: " + constraintType.ToString() + " Method:" + method.ToString() + " Consisting of " + constrainedMethodType.ToString() + ", slot #" + constrainedMethodSlot.LowLevelToString());
cell = new NonGenericDirectConstrainedMethodCell()
{
ConstraintType = constraintType,
ConstrainedMethodType = constrainedMethodType,
ConstrainedMethodSlot = (int)constrainedMethodSlot
};
}
break;
case MetadataFixupKind.NonGenericConstrainedMethod:
{
var constraintType = metadata.GetType(token);
var method = metadata.GetMethod(token2);
var constrainedMethodType = method.OwningType;
var constrainedMethodSlot = ComputeConstrainedMethodSlot(method);
TypeLoaderLogger.WriteLine("NonGenericConstrainedMethod: " + constraintType.ToString() + " Method:" + method.ToString() + " Consisting of " + constrainedMethodType.ToString() + ", slot #" + constrainedMethodSlot.LowLevelToString());
cell = new NonGenericConstrainedMethodCell()
{
ConstraintType = constraintType,
ConstrainedMethodType = constrainedMethodType,
ConstrainedMethodSlot = (int)constrainedMethodSlot
};
}
break;
case MetadataFixupKind.GenericConstrainedMethod:
{
var constraintType = metadata.GetType(token);
var method = metadata.GetMethod(token2);
var nativeFormatMethod = (TypeSystem.NativeFormat.NativeFormatMethod)method.GetTypicalMethodDefinition();
TypeLoaderLogger.WriteLine("GenericConstrainedMethod: " + constraintType.ToString() + " Method " + method.ToString());
cell = new GenericConstrainedMethodCell()
{
ConstraintType = constraintType,
ConstrainedMethod = method,
MethodName = IntPtr.Zero,
MethodSignature = RuntimeMethodSignature.CreateFromMethodHandle(nativeFormatMethod.MetadataUnit.RuntimeModule, nativeFormatMethod.Handle.ToInt())
};
}
break;
case MetadataFixupKind.IsInst:
case MetadataFixupKind.CastClass:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("Casting on: " + type.ToString());
cell = new CastingCell { Type = type, Throwing = (kind == MetadataFixupKind.CastClass) };
}
break;
case MetadataFixupKind.AllocateArray:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("AllocateArray on: " + type.ToString());
cell = new AllocateArrayCell { Type = type };
}
break;
case MetadataFixupKind.CheckArrayElementType:
{
var type = metadata.GetType(token);
TypeLoaderLogger.WriteLine("CheckArrayElementType on: " + type.ToString());
cell = new CheckArrayElementTypeCell { Type = type };
}
break;
case MetadataFixupKind.CallingConventionConverter_NoInstantiatingParam:
case MetadataFixupKind.CallingConventionConverter_MaybeInstantiatingParam:
case MetadataFixupKind.CallingConventionConverter_HasInstantiatingParam:
{
CallingConventionConverterKind converterKind;
switch (kind)
{
case MetadataFixupKind.CallingConventionConverter_NoInstantiatingParam:
converterKind = CallingConventionConverterKind.NoInstantiatingParam;
break;
case MetadataFixupKind.CallingConventionConverter_MaybeInstantiatingParam:
converterKind = CallingConventionConverterKind.MaybeInstantiatingParam;
break;
case MetadataFixupKind.CallingConventionConverter_HasInstantiatingParam:
converterKind = CallingConventionConverterKind.HasInstantiatingParam;
break;
default:
Environment.FailFast("Unknown converter kind");
throw new BadImageFormatException();
}
cell = new CallingConventionConverterCell
{
Flags = converterKind,
Signature = metadata.GetSignature(token),
MethodArgs = metadata.MethodInstantiation,
TypeArgs = metadata.TypeInstantiation
};
#if TYPE_LOADER_TRACE
TypeLoaderLogger.WriteLine("CallingConventionConverter on: ");
TypeLoaderLogger.WriteLine(" -> Flags: " + ((int)converterKind).LowLevelToString());
TypeLoaderLogger.WriteLine(" -> Signature: " + token.ToInt().LowLevelToString());
for (int i = 0; i < metadata.TypeInstantiation.Length; i++)
TypeLoaderLogger.WriteLine(" -> TypeArg[" + i.LowLevelToString() + "]: " + metadata.TypeInstantiation[i]);
for (int i = 0; i < metadata.MethodInstantiation.Length; i++)
TypeLoaderLogger.WriteLine(" -> MethodArg[" + i.LowLevelToString() + "]: " + metadata.MethodInstantiation[i]);
#endif
}
break;
default:
Environment.FailFast("Unknown fixup kind");
// Throw here so that the compiler won't complain.
throw new BadImageFormatException();
}
return cell;
}
