C# System.RuntimeTypeHandle类代码示例

        public unsafe bool TryGetMetadataForNamedType(RuntimeTypeHandle runtimeTypeHandle, out MetadataReader metadataReader, out TypeDefinitionHandle typeDefHandle)
        {
            // Iterate over all modules, starting with the module that defines the EEType
            foreach (IntPtr moduleHandle in ModuleList.Enumerate(RuntimeAugments.GetModuleFromTypeHandle(runtimeTypeHandle)))
            {
                MetadataTable mapTable = MetadataTable.CreateTypeMapTable(moduleHandle);
                foreach (var ptrEntry in mapTable)
                {
                    var pCurrentEntry = (TypeMapEntry*)ptrEntry;
                    RuntimeTypeHandle entryTypeHandle = RuntimeAugments.CreateRuntimeTypeHandle(pCurrentEntry->EEType);
                    Handle entryMetadataHandle = pCurrentEntry->TypeDefinitionHandle.AsHandle();
                    if (entryTypeHandle.Equals(runtimeTypeHandle) &&
                        entryMetadataHandle.HandleType == HandleType.TypeDefinition)
                    {
                        metadataReader = ModuleList.Instance.GetMetadataReaderForModule(moduleHandle);
                        typeDefHandle = entryMetadataHandle.ToTypeDefinitionHandle(metadataReader);
                        return true;
                    }
                }
            }

            metadataReader = null;
            typeDefHandle = default(TypeDefinitionHandle);

            return false;
        }

        public static FieldInfo GetFieldFromHandle(RuntimeFieldHandle handle, RuntimeTypeHandle declaringType)
        {
            if (handle.IsNullHandle())
                throw new ArgumentException(Environment.GetResourceString("Argument_InvalidHandle"));

            return RuntimeType.GetFieldInfo(declaringType.GetRuntimeType(), handle.GetRuntimeFieldInfo());
        }           

        public TypedReference GetNextArg(RuntimeTypeHandle rth)
        {
            if (sigPtr != IntPtr.Zero)
            {
                // This is an ordinary ArgIterator capable of determining
                // types from a signature. Just do a regular GetNextArg.
                return GetNextArg();
            }
            else
            {
                // Prevent abuse of this API with a default ArgIterator (it
                // doesn't require permission to create a zero-inited value
                // type). Check that ArgPtr isn't zero or this API will allow a
                // malicious caller to increment the pointer to an arbitrary
                // location in memory and read the contents.
                if (ArgPtr == IntPtr.Zero)
                    throw new ArgumentNullException();

                TypedReference result = new TypedReference ();
                // reference to TypedReference is banned, so have to pass result as pointer
                unsafe
                {
                    InternalGetNextArg(&result, rth.GetRuntimeType());
                }
                return result;
            }
        }

        /// <summary>
        /// Used by various parts of the runtime as a replacement for Delegate.Method
        /// 
        /// The Interop layer uses this to distinguish between different methods on a 
        /// single type, and to get the function pointer for delegates to static functions
        /// 
        /// The reflection apis use this api to figure out what MethodInfo is related
        /// to a delegate.
        /// 
        /// </summary>
        /// <param name="typeOfFirstParameterIfInstanceDelegate"> 
        ///   This value indicates which type an delegate's function pointer is associated with
        ///   This value is ONLY set for delegates where the function pointer points at an instance method
        /// </param>
        /// <param name="isOpenResolver"> 
        ///   This value indicates if the returned pointer is an open resolver structure.
        /// </param>
        /// <returns></returns>
        unsafe internal IntPtr GetFunctionPointer(out RuntimeTypeHandle typeOfFirstParameterIfInstanceDelegate, out bool isOpenResolver)
        {
            typeOfFirstParameterIfInstanceDelegate = default(RuntimeTypeHandle);
            isOpenResolver = false;

            if (GetThunk(MulticastThunk) == m_functionPointer)
            {
                return IntPtr.Zero;
            }
            else if (m_extraFunctionPointerOrData != IntPtr.Zero)
            {
                if (GetThunk(OpenInstanceThunk) == m_functionPointer)
                {
                    typeOfFirstParameterIfInstanceDelegate = ((OpenMethodResolver*)m_extraFunctionPointerOrData)->DeclaringType;
                    isOpenResolver = true;
                }
                return m_extraFunctionPointerOrData;
            }
            else
            {
                if (m_firstParameter != null)
                    typeOfFirstParameterIfInstanceDelegate = new RuntimeTypeHandle(m_firstParameter.EETypePtr);

                // TODO! Implementation issue for generic invokes here ... we need another IntPtr for uniqueness.

                return m_functionPointer;
            }
        }

 private NativeFormatRuntimeNamedTypeInfo(MetadataReader reader, TypeDefinitionHandle typeDefinitionHandle, RuntimeTypeHandle typeHandle) :
     base(typeHandle)
 {
     _reader = reader;
     _typeDefinitionHandle = typeDefinitionHandle;
     _typeDefinition = _typeDefinitionHandle.GetTypeDefinition(reader);
 }

 static bool 载入(RuntimeTypeHandle 窗口类型, ref 窗口 欲载入的窗口, IWin32Window 父窗口 = null, bool 是否采用对话框方式 = true)
 {
     欲载入的窗口 = (窗口)Activator.CreateInstance(Type.GetTypeFromHandle(窗口类型));
     if (是否采用对话框方式) Application.Run(欲载入的窗口);
     else 欲载入的窗口.Show(父窗口);
     return true;
 }

 protected override void SerializeWithXsiType(XmlWriterDelegator xmlWriter, object obj, RuntimeTypeHandle objectTypeHandle, Type objectType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
 {
     DataContract dataContract;
     bool verifyKnownType = false;
     bool isInterface = declaredType.IsInterface;
     if (isInterface && CollectionDataContract.IsCollectionInterface(declaredType))
     {
         dataContract = this.GetDataContract(declaredTypeHandle, declaredType);
     }
     else if (declaredType.IsArray)
     {
         dataContract = this.GetDataContract(declaredTypeHandle, declaredType);
     }
     else
     {
         dataContract = this.GetDataContract(objectTypeHandle, objectType);
         DataContract declaredContract = (declaredTypeID >= 0) ? this.GetDataContract(declaredTypeID, declaredTypeHandle) : this.GetDataContract(declaredTypeHandle, declaredType);
         verifyKnownType = this.WriteTypeInfo(xmlWriter, dataContract, declaredContract);
         this.HandleCollectionAssignedToObject(declaredType, ref dataContract, ref obj, ref verifyKnownType);
     }
     if (isInterface)
     {
         VerifyObjectCompatibilityWithInterface(dataContract, obj, declaredType);
     }
     base.SerializeAndVerifyType(dataContract, xmlWriter, obj, verifyKnownType, declaredType.TypeHandle, declaredType);
 }

        public bool TryGetGenericVirtualTargetForTypeAndSlot(RuntimeTypeHandle targetHandle, ref RuntimeTypeHandle declaringType, RuntimeTypeHandle[] genericArguments, ref string methodName, ref RuntimeMethodSignature methodSignature, out IntPtr methodPointer, out IntPtr dictionaryPointer, out bool slotUpdated)
        {
            MethodNameAndSignature methodNameAndSignature = new MethodNameAndSignature(methodName, methodSignature);

#if REFLECTION_EXECUTION_TRACE
            ReflectionExecutionLogger.WriteLine("GVM resolution starting for " + GetTypeNameDebug(declaringType) + "." + methodNameAndSignature.Name + "(...)  on a target of type " + GetTypeNameDebug(targetHandle) + " ...");
#endif

            if (RuntimeAugments.IsInterface(declaringType))
            {
                methodPointer = IntPtr.Zero;
                dictionaryPointer = IntPtr.Zero;

                slotUpdated = ResolveInterfaceGenericVirtualMethodSlot(targetHandle, ref declaringType, ref methodNameAndSignature);

                methodName = methodNameAndSignature.Name;
                methodSignature = methodNameAndSignature.Signature;
                return slotUpdated;
            }
            else
            {
                slotUpdated = false;
                return ResolveGenericVirtualMethodTarget(targetHandle, declaringType, genericArguments, methodNameAndSignature, out methodPointer, out dictionaryPointer);
            }
        }

 public GetFieldBinder(string name, RuntimeTypeHandle classContext, RuntimeTypeHandle returnType, AccessFlags access)
 {
     _name = name;
     _returnType = Type.GetTypeFromHandle(returnType); // should correspond to AccessFlags
     _classContext = Type.GetTypeFromHandle(classContext);
     _access = access;
 }

        public static void TestUseCase(Assert assert)
        {
            assert.Expect(7);

            var t1 = new Type();
            assert.Ok(t1 != null, "#565 t1");

            var t2 = new ValueType();
            assert.Ok(t2 != null, "#565 t2");

            var t3 = new IntPtr();
            assert.Ok(t3.GetType() == typeof(IntPtr) , "#565 t3");

            var t4 = new UIntPtr();
            assert.Ok(t4.GetType() == typeof(UIntPtr), "#565 t4");

            var t5 = new ParamArrayAttribute();
            assert.Ok(t5 != null, "#565 t5");

            var t6 = new RuntimeTypeHandle();
            assert.Ok(t6.GetType() == typeof(RuntimeTypeHandle), "#565 t6");

            var t7 = new RuntimeFieldHandle();
            assert.Ok(t7.GetType() == typeof(RuntimeFieldHandle), "#565 t7");
        }

        protected CallBinder(RuntimeTypeHandle returnType, int genericParams)
        {
            Debug.Assert(genericParams >= 0);

            _returnType = Type.GetTypeFromHandle(returnType);
            _genericParamsCount = genericParams;
        }

 private static RuntimeTypeHandle GetTypeHandle(void* obj)
 {
     // TypeDefinition is located at the beginning of object (i.e. *obj )
     RuntimeTypeHandle handle = new RuntimeTypeHandle();
     ((uint*)&handle)[0] = ((uint*)obj)[0];
     return handle;
 }

        public bool IsCanonicallyEquivalent(RuntimeTypeHandle other)
        {
            if (_defType != null)
            {
                TypeDesc typeToFindAsCanon = _defType.ConvertToCanonForm(_canonKind);
                TypeDesc otherTypeAsTypeDesc = _defType.Context.ResolveRuntimeTypeHandle(other);
                TypeDesc otherTypeAsCanon = otherTypeAsTypeDesc.ConvertToCanonForm(_canonKind);
                return typeToFindAsCanon == otherTypeAsCanon;
            }

            if (!_genericDefinition.IsNull())
            {
                if (RuntimeAugments.IsGenericType(other))
                {
                    RuntimeTypeHandle otherGenericDefinition;
                    RuntimeTypeHandle[] otherGenericArgs;
                    otherGenericDefinition = RuntimeAugments.GetGenericInstantiation(other, out otherGenericArgs);

                    return _genericDefinition.Equals(otherGenericDefinition) && TypeLoaderEnvironment.Instance.CanInstantiationsShareCode(_genericArgs, otherGenericArgs, _canonKind);
                }
                else
                    return false;
            }
            else
                return _typeToFind.Equals(other);
        }

 public unsafe OpenMethodResolver(RuntimeTypeHandle declaringTypeOfSlot, RuntimeMethodHandle gvmSlot, int handle)
 {
     _resolveType = GVMResolve;
     _methodHandleOrSlotOrCodePointer = *(IntPtr*)&gvmSlot;
     _declaringType = declaringTypeOfSlot;
     _handle = handle;
 }

        private bool FindMatchingInterfaceSlot(IntPtr moduleHandle, NativeReader nativeLayoutReader, ref NativeParser entryParser, ref ExternalReferencesTable extRefs, ref RuntimeTypeHandle declaringType, ref MethodNameAndSignature methodNameAndSignature, RuntimeTypeHandle openTargetTypeHandle, RuntimeTypeHandle[] targetTypeInstantiation, bool variantDispatch)
        {
            uint numTargetImplementations = entryParser.GetUnsigned();

            for (uint j = 0; j < numTargetImplementations; j++)
            {
                uint nameAndSigToken = extRefs.GetRvaFromIndex(entryParser.GetUnsigned());
                MethodNameAndSignature targetMethodNameAndSignature = GetMethodNameAndSignatureFromNativeReader(nativeLayoutReader, nameAndSigToken);
                RuntimeTypeHandle targetTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());

#if REFLECTION_EXECUTION_TRACE
                ReflectionExecutionLogger.WriteLine("    Searching for GVM implementation on targe type = " + GetTypeNameDebug(targetTypeHandle));
#endif

                uint numIfaceImpls = entryParser.GetUnsigned();

                for (uint k = 0; k < numIfaceImpls; k++)
                {
                    RuntimeTypeHandle implementingTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());

                    uint numIfaceSigs = entryParser.GetUnsigned();

                    if (!openTargetTypeHandle.Equals(implementingTypeHandle))
                    {
                        // Skip over signatures data
                        for (uint l = 0; l < numIfaceSigs; l++)
                            entryParser.GetUnsigned();

                        continue;
                    }

                    for (uint l = 0; l < numIfaceSigs; l++)
                    {
                        RuntimeTypeHandle currentIfaceTypeHandle = default(RuntimeTypeHandle);

                        NativeParser ifaceSigParser = new NativeParser(nativeLayoutReader, extRefs.GetRvaFromIndex(entryParser.GetUnsigned()));
                        IntPtr currentIfaceSigPtr = ifaceSigParser.Reader.OffsetToAddress(ifaceSigParser.Offset);

                        if (TypeLoaderEnvironment.Instance.GetTypeFromSignatureAndContext(currentIfaceSigPtr, targetTypeInstantiation, null, out currentIfaceTypeHandle, out currentIfaceSigPtr))
                        {
                            Debug.Assert(!currentIfaceTypeHandle.IsNull());

                            if ((!variantDispatch && declaringType.Equals(currentIfaceTypeHandle)) ||
                                (variantDispatch && RuntimeAugments.IsAssignableFrom(declaringType, currentIfaceTypeHandle)))
                            {
#if REFLECTION_EXECUTION_TRACE
                                ReflectionExecutionLogger.WriteLine("    " + (declaringType.Equals(currentIfaceTypeHandle) ? "Exact" : "Variant-compatible") + " match found on this target type!");
#endif
                                // We found the GVM slot target for the input interface GVM call, so let's update the interface GVM slot and return success to the caller
                                declaringType = targetTypeHandle;
                                methodNameAndSignature = targetMethodNameAndSignature;
                                return true;
                            }
                        }
                    }
                }
            }

            return false;
        }