Exemplo n.º 1
1
        private void ImportCustomAttributesNames()
        {
            _customAttributes = new List <string>();

            AssemblyDefinition def = _reader.GetAssemblyDefinition();

            CustomAttributeHandleCollection col = def.GetCustomAttributes();

            foreach (CustomAttributeHandle handle in col)
            {
                EntityHandle ctorHandle = _reader.GetCustomAttribute(handle).Constructor;
                if (ctorHandle.Kind != HandleKind.MemberReference)
                {
                    continue;
                }

                EntityHandle mHandle = _reader.GetMemberReference((MemberReferenceHandle)ctorHandle).Parent;
                if (mHandle.Kind != HandleKind.TypeReference)
                {
                    continue;
                }

                string type = GetTypeName((TypeReferenceHandle)mHandle);

                _customAttributes.Add(type);
            }
        }
Exemplo n.º 2
0
        private Scope GetOSPlatformScope(CustomAttributeHandleCollection attrs)
        {
            var supported   = new List <OSPlatform>();
            var unsupported = new List <OSPlatform>();

            foreach (var customAttrHandle in attrs)
            {
                CustomAttribute customAttr = this.mdReader.GetCustomAttribute(customAttrHandle);
                if (this.TryGetOSPlatformAttributeValue(customAttr, out bool isSupported, out OSPlatform scen))
                {
                    if (isSupported)
                    {
                        supported.Add(scen);
                    }
                    else
                    {
                        unsupported.Add(scen);
                    }
                }
            }

            return(new Scope()
            {
                Support = supported,
                NoSupport = unsupported
            });
        }
Exemplo n.º 3
0
 public static Nullability?GetNullableContext(this CustomAttributeHandleCollection customAttributes,
                                              MetadataReader metadata)
 {
     foreach (var handle in customAttributes)
     {
         var customAttribute = metadata.GetCustomAttribute(handle);
         if (customAttribute.IsKnownAttribute(metadata, KnownAttribute.NullableContext))
         {
             // Decode
             CustomAttributeValue <IType> value;
             try
             {
                 value = customAttribute.DecodeValue(
                     Metadata.MetadataExtensions.MinimalAttributeTypeProvider);
             }
             catch (BadImageFormatException)
             {
                 continue;
             }
             catch (Metadata.EnumUnderlyingTypeResolveException)
             {
                 continue;
             }
             if (value.FixedArguments.Length == 1 && value.FixedArguments[0].Value is byte b && b <= 2)
             {
                 return((Nullability)b);
             }
         }
     }
     return(null);
 }
Exemplo n.º 4
0
 internal static CustomAttributeData[] GetCustomAttributesData(
     MetadataReader metadata,
     CustomAttributeHandleCollection attributes,
     bool inherit = false)
 {
     return(new CustomAttributeData[0]);
 }
Exemplo n.º 5
0
 static Accessibility FindMinimumAccessibilityForNRT(MetadataReader metadata, CustomAttributeHandleCollection customAttributes)
 {
     // Determine the minimum effective accessibility an entity must have, so that the metadata stores the nullability for its type.
     foreach (var handle in customAttributes)
     {
         var customAttribute = metadata.GetCustomAttribute(handle);
         if (customAttribute.IsKnownAttribute(metadata, KnownAttribute.NullablePublicOnly))
         {
             CustomAttributeValue <IType> value;
             try
             {
                 value = customAttribute.DecodeValue(Metadata.MetadataExtensions.MinimalAttributeTypeProvider);
             }
             catch (BadImageFormatException)
             {
                 continue;
             }
             catch (EnumUnderlyingTypeResolveException)
             {
                 continue;
             }
             if (value.FixedArguments.Length == 1 && value.FixedArguments[0].Value is bool includesInternals)
             {
                 return(includesInternals ? Accessibility.ProtectedAndInternal : Accessibility.Protected);
             }
         }
     }
     return(Accessibility.None);
 }
 /// <summary>
 /// Converts ECMA-encoded custom attributes into a freshly allocated CustomAttributeData object suitable for direct return
 /// from the CustomAttributes api.
 /// </summary>
 public static IEnumerable <CustomAttributeData> ToTrueCustomAttributes(this CustomAttributeHandleCollection handles, EcmaModule module)
 {
     foreach (CustomAttributeHandle handle in handles)
     {
         yield return(handle.ToCustomAttributeData(module));
     }
 }
Exemplo n.º 7
0
        public bool HasAttribute(MetadataReader reader, CustomAttributeHandleCollection attrHandles, string attributeFullName)
        {
            if (!_attributeConstructors.TryGetValue(attributeFullName, out var constructorSet))
            {
                constructorSet = new HashSet <EntityHandle>();
                _attributeConstructors[attributeFullName] = constructorSet;
            }

            var attrs = attrHandles.Select(reader.GetCustomAttribute).ToList();

            if (attrs.Any(attr => constructorSet.Contains(attr.Constructor)))
            {
                return(true);
            }

            var compilerGeneratedAttr = attrs
                                        .Where(attr => reader.GetFullname(reader.GetCustomAttrClass(attr)) == attributeFullName)
                                        .Select(attr => (CustomAttribute?)attr)
                                        .FirstOrDefault();

            if (compilerGeneratedAttr == null)
            {
                return(false);
            }

            constructorSet.Add(compilerGeneratedAttr.Value.Constructor);
            return(true);
        }
        public static CustomAttributeData TryFindCustomAttribute(this CustomAttributeHandleCollection handles, ReadOnlySpan <byte> ns, ReadOnlySpan <byte> name, EcmaModule module)
        {
            CustomAttributeHandle handle = handles.FindCustomAttributeByName(ns, name, module);

            if (handle.IsNil)
            {
                return(null);
            }
            return(handle.ToCustomAttributeData(module));
        }
Exemplo n.º 9
0
        } // Read

        public static uint Read(this NativeReader reader, uint offset, out CustomAttributeHandleCollection values)
        {
            values = new CustomAttributeHandleCollection(reader, offset);
            uint count;

            offset = reader.DecodeUnsigned(offset, out count);
            for (uint i = 0; i < count; ++i)
            {
                offset = reader.SkipInteger(offset);
            }
            return(offset);
        } // Read
Exemplo n.º 10
0
 public static bool HasKnownAttribute(this CustomAttributeHandleCollection customAttributes, MetadataReader metadata, KnownAttribute type)
 {
     foreach (var handle in customAttributes)
     {
         var customAttribute = metadata.GetCustomAttribute(handle);
         if (customAttribute.IsKnownAttribute(metadata, type))
         {
             return(true);
         }
     }
     return(false);
 }
        public static void AddDependenciesDueToCustomAttributes(ref DependencyList dependencies, NodeFactory factory, EcmaAssembly assembly)
        {
            AssemblyDefinition asmDef = assembly.MetadataReader.GetAssemblyDefinition();

            AddDependenciesDueToCustomAttributes(ref dependencies, factory, assembly, asmDef.GetCustomAttributes());

            // This is rather awkward because ModuleDefinition doesn't offer means to get to the custom attributes
            CustomAttributeHandleCollection moduleAttributes =
                assembly.MetadataReader.GetCustomAttributes(System.Reflection.Metadata.Ecma335.MetadataTokens.EntityHandle(0x1));

            AddDependenciesDueToCustomAttributes(ref dependencies, factory, assembly, moduleAttributes);
        }
Exemplo n.º 12
0
        static internal List <MrCustomAttribute> GetCustomAttributesFromHandles(
            CustomAttributeHandleCollection customAttributeHandles,
            MrType declaringType)
        {
            var customAttributes = new List <MrCustomAttribute>(customAttributeHandles.Count);

            foreach (var customAttributeHandle in customAttributeHandles)
            {
                var customAttribute = new MrCustomAttribute(customAttributeHandle, declaringType, declaringType.Assembly);
                customAttributes.Add(customAttribute);
            }

            return(customAttributes);
        }
Exemplo n.º 13
0
        public static object GetDecimalConstantValue(MetadataModule module, CustomAttributeHandleCollection attributeHandles)
        {
            var metadata = module.metadata;

            foreach (var attributeHandle in attributeHandles)
            {
                var attribute = metadata.GetCustomAttribute(attributeHandle);
                if (attribute.IsKnownAttribute(metadata, KnownAttribute.DecimalConstant))
                {
                    return(TryDecodeDecimalConstantAttribute(module, attribute));
                }
            }
            return(null);
        }
Exemplo n.º 14
0
        public void Add(CustomAttributeHandleCollection attributes, SymbolKind target)
        {
            var metadata = module.metadata;

            foreach (var handle in attributes)
            {
                var attribute = metadata.GetCustomAttribute(handle);
                // Attribute types shouldn't be generic (and certainly not open), so we don't need a generic context.
                var ctor = module.ResolveMethod(attribute.Constructor, new GenericContext());
                var type = ctor.DeclaringType;
                if (IgnoreAttribute(type, target))
                {
                    continue;
                }
                Add(new CustomAttribute(module, ctor, handle));
            }
        }
Exemplo n.º 15
0
        public static bool HasCustomAttribute(this MetadataReader metadataReader, CustomAttributeHandleCollection customAttributes, 
            string attributeNamespace, string attributeName)
        {
            foreach (var attributeHandle in customAttributes)
            {
                StringHandle namespaceHandle, nameHandle;
                if (!metadataReader.GetAttributeNamespaceAndName(attributeHandle, out namespaceHandle, out nameHandle))
                    continue;

                if (metadataReader.StringComparer.Equals(namespaceHandle, attributeNamespace) 
                    && metadataReader.StringComparer.Equals(nameHandle, attributeName))
                {
                    return true;
                }
            }

            return false;
        }
Exemplo n.º 16
0
        private static CustomAttributeHandle FindCustomAttributeByName(this CustomAttributeHandleCollection handles, ReadOnlySpan <byte> ns, ReadOnlySpan <byte> name, EcmaModule module)
        {
            MetadataReader reader = module.Reader;

            foreach (CustomAttributeHandle handle in handles)
            {
                CustomAttribute ca = handle.GetCustomAttribute(reader);
                EntityHandle    declaringTypeHandle = ca.TryGetDeclaringTypeHandle(reader);
                if (declaringTypeHandle.IsNil)
                {
                    continue;
                }
                if (declaringTypeHandle.TypeMatchesNameAndNamespace(ns, name, reader))
                {
                    return(handle);
                }
            }

            return(default);
Exemplo n.º 17
0
        public static bool HasCustomAttribute(this MetadataReader metadataReader, CustomAttributeHandleCollection customAttributes,
                                              string attributeNamespace, string attributeName)
        {
            foreach (var attributeHandle in customAttributes)
            {
                StringHandle namespaceHandle, nameHandle;
                if (!metadataReader.GetAttributeNamespaceAndName(attributeHandle, out namespaceHandle, out nameHandle))
                {
                    continue;
                }

                if (metadataReader.StringComparer.Equals(namespaceHandle, attributeNamespace) &&
                    metadataReader.StringComparer.Equals(nameHandle, attributeName))
                {
                    return(true);
                }
            }

            return(false);
        }
Exemplo n.º 18
0
        void CompareCustomAttributes(CustomAttributeHandleCollection cac1, CustomAttributeHandleCollection cac2, string padding)
        {
            var dict1 = GetCustomAttributes(reader1, cac1);
            var dict2 = GetCustomAttributes(reader2, cac2);

            foreach (var pair in dict1)
            {
                if (!dict2.ContainsKey(pair.Key))
                {
                    Console.WriteLine($"{padding}  -             CustomAttribute {pair.Key}");
                }
            }

            foreach (var pair in dict2)
            {
                if (!dict1.ContainsKey(pair.Key))
                {
                    Console.WriteLine($"{padding}  +             CustomAttribute {pair.Key}");
                }
            }
        }
Exemplo n.º 19
0
        public static bool HasCustomAttribute(this MetadataReader metadataReader, CustomAttributeHandleCollection customAttributes,
                                              string attributeNamespace, string attributeName)
        {
            foreach (var attributeHandle in customAttributes)
            {
                ConstantStringValueHandle nameHandle;
                string namespaceName;
                if (!metadataReader.GetAttributeNamespaceAndName(attributeHandle, out namespaceName, out nameHandle))
                {
                    continue;
                }

                if (namespaceName.Equals(attributeNamespace) &&
                    nameHandle.StringEquals(attributeName, metadataReader))
                {
                    return(true);
                }
            }

            return(false);
        }
Exemplo n.º 20
0
        private static CustomAttributeHandle FindCustomAttributeByName(this CustomAttributeHandleCollection handles, ReadOnlySpan <byte> ns, ReadOnlySpan <byte> name, EcmaModule module)
        {
            MetadataReader reader = module.Reader;

            foreach (CustomAttributeHandle handle in handles)
            {
                CustomAttribute ca         = handle.GetCustomAttribute(module.Reader);
                EntityHandle    ctorHandle = ca.Constructor;
                switch (ctorHandle.Kind)
                {
                case HandleKind.MethodDefinition:
                {
                    MethodDefinitionHandle mh = (MethodDefinitionHandle)ctorHandle;
                    EntityHandle           declaringTypeHandle = mh.GetMethodDefinition(reader).GetDeclaringType();
                    if (declaringTypeHandle.TypeMatchesNameAndNamespace(ns, name, reader))
                    {
                        return(handle);
                    }
                    break;
                }

                case HandleKind.MemberReference:
                {
                    MemberReference mr = ((MemberReferenceHandle)ctorHandle).GetMemberReference(reader);
                    EntityHandle    declaringTypeHandle = mr.Parent;
                    if (declaringTypeHandle.TypeMatchesNameAndNamespace(ns, name, reader))
                    {
                        return(handle);
                    }
                    break;
                }

                default:
                    break;
                }
            }

            return(default);
Exemplo n.º 21
0
        public static CustomAttributeHandle GetCustomAttributeHandle(this MetadataReader metadataReader, CustomAttributeHandleCollection customAttributes,
                                                                     string attributeNamespace, string attributeName)
        {
            foreach (var attributeHandle in customAttributes)
            {
                if (IsEqualCustomAttributeName(attributeHandle, metadataReader, attributeNamespace, attributeName))
                {
                    return(attributeHandle);
                }
            }

            return(default(CustomAttributeHandle));
        }
Exemplo n.º 22
0
 public static bool IsDecimalConstant(MetadataModule module, CustomAttributeHandleCollection attributeHandles)
 {
     return(attributeHandles.HasKnownAttribute(module.metadata, KnownAttribute.DecimalConstant));
 }
Exemplo n.º 23
0
            private static DynamicallyAccessedMemberTypes GetMemberTypesForDynamicallyAccessedMembersAttribute(MetadataReader reader, CustomAttributeHandleCollection customAttributeHandles)
            {
                CustomAttributeHandle ca = reader.GetCustomAttributeHandle(customAttributeHandles, "System.Diagnostics.CodeAnalysis", "DynamicallyAccessedMembersAttribute");

                if (ca.IsNil)
                {
                    return(DynamicallyAccessedMemberTypes.None);
                }

                BlobReader blobReader = reader.GetBlobReader(reader.GetCustomAttribute(ca).Value);

                Debug.Assert(blobReader.Length == 8);
                if (blobReader.Length != 8)
                {
                    return(DynamicallyAccessedMemberTypes.None);
                }

                blobReader.ReadUInt16(); // Prolog
                return((DynamicallyAccessedMemberTypes)blobReader.ReadUInt32());
            }
Exemplo n.º 24
0
 internal static IEnumerable <CustomAttributeData> GetCustomAttributes(MetadataReader reader, CustomAttributeHandleCollection customAttributeHandles)
 {
     foreach (CustomAttributeHandle customAttributeHandle in customAttributeHandles)
     {
         yield return(GetCustomAttributeData(reader, customAttributeHandle));
     }
 }
        private static void AddDependenciesDueToCustomAttributes(ref DependencyList dependencies, NodeFactory factory, EcmaModule module, CustomAttributeHandleCollection attributeHandles)
        {
            MetadataReader reader                = module.MetadataReader;
            var            mdManager             = (UsageBasedMetadataManager)factory.MetadataManager;
            var            attributeTypeProvider = new CustomAttributeTypeProvider(module);


            foreach (CustomAttributeHandle caHandle in attributeHandles)
            {
                CustomAttribute attribute = reader.GetCustomAttribute(caHandle);

                try
                {
                    MethodDesc constructor = module.GetMethod(attribute.Constructor);

                    if (!mdManager.GeneratesAttributeMetadata(constructor.OwningType))
                    {
                        continue;
                    }

                    if (mdManager.IsReflectionBlocked(constructor))
                    {
                        continue;
                    }

                    CustomAttributeValue <TypeDesc> decodedValue = attribute.DecodeValue(attributeTypeProvider);

                    // Make a new list in case we need to abort.
                    var caDependencies = factory.MetadataManager.GetDependenciesForCustomAttribute(factory, constructor, decodedValue) ?? new DependencyList();

                    caDependencies.Add(factory.ReflectableMethod(constructor), "Attribute constructor");
                    caDependencies.Add(factory.ConstructedTypeSymbol(constructor.OwningType), "Attribute type");

                    if (AddDependenciesFromCustomAttributeBlob(caDependencies, factory, constructor.OwningType, decodedValue))
                    {
                        dependencies = dependencies ?? new DependencyList();
                        dependencies.AddRange(caDependencies);
                        dependencies.Add(factory.CustomAttributeMetadata(new ReflectableCustomAttribute(module, caHandle)), "Attribute metadata");
                    }
                }
                catch (TypeSystemException)
                {
                    // We could end up seeing an exception here for a multitude of reasons:
                    // * Attribute ctor doesn't resolve
                    // * There's a typeof() that refers to something that can't be loaded
                    // * Attribute refers to a non-existing field
                    // * Etc.
                    //
                    // If we really wanted to, we could probably come up with a way to still make this
                    // work with the same failure modes at runtime as the CLR, but it might not be
                    // worth the hassle: the input was invalid. The most important thing is that we
                    // don't crash the compilation.
                }
            }
        }
Exemplo n.º 26
0
        Dictionary <string, CustomAttribute> GetCustomAttributes(MetadataReader reader, CustomAttributeHandleCollection cac)
        {
            var dict = new Dictionary <string, CustomAttribute> ();

            foreach (var handle in cac)
            {
                var ca      = reader.GetCustomAttribute(handle);
                var cHandle = ca.Constructor;

                string typeName;

                switch (cHandle.Kind)
                {
                case HandleKind.MethodDefinition:
                    var methodDef = reader.GetMethodDefinition((MethodDefinitionHandle)cHandle);

                    typeName = GetTypeName(reader, methodDef.GetDeclaringType());
                    break;

                case HandleKind.MemberReference:
                    var memberDef = reader.GetMemberReference((MemberReferenceHandle)cHandle);

                    typeName = GetTypeName(reader, memberDef.Parent);
                    break;

                default:
                    Program.Warning($"Unexpected EntityHandle kind: {cHandle.Kind}");
                    continue;
                }

                dict [typeName] = ca;
            }

            return(dict);
        }
Exemplo n.º 27
0
 private static CustomAttributeHandle GetComVisibleAttribute(MetadataReader reader, CustomAttributeHandleCollection customAttributes)
 {
     foreach (CustomAttributeHandle attr in customAttributes)
     {
         CustomAttribute attribute = reader.GetCustomAttribute(attr);
         if (IsTargetAttribute(reader, attribute, "System.Runtime.InteropServices", "ComVisibleAttribute"))
         {
             return(attr);
         }
     }
     return(new CustomAttributeHandle());
 }
Exemplo n.º 28
0
    internal static bool IsCompatibleWithPlatform(MetadataReader mr, MetadataIndex index, Platform?platform, CustomAttributeHandleCollection customAttributesOnMember)
    {
        if (index.SupportedArchitectureAttributeCtor == default)
        {
            // This metadata never uses the SupportedArchitectureAttribute, so we assume this member is compatible.
            return(true);
        }

        foreach (CustomAttributeHandle attHandle in customAttributesOnMember)
        {
            CustomAttribute att = mr.GetCustomAttribute(attHandle);
            if (att.Constructor.Equals(index.SupportedArchitectureAttributeCtor))
            {
                if (platform is null)
                {
                    // Without a compilation, we cannot ascertain compatibility.
                    return(false);
                }

                var requiredPlatform = (InteropArchitecture)(int)att.DecodeValue(CustomAttributeTypeProvider.Instance).FixedArguments[0].Value !;
                return(platform switch
                {
                    Platform.AnyCpu or Platform.AnyCpu32BitPreferred => requiredPlatform == InteropArchitecture.All,
                    Platform.Arm64 => (requiredPlatform & InteropArchitecture.Arm64) == InteropArchitecture.Arm64,
                    Platform.X86 => (requiredPlatform & InteropArchitecture.X86) == InteropArchitecture.X86,
                    Platform.X64 => (requiredPlatform & InteropArchitecture.X64) == InteropArchitecture.X64,
                    _ => false,
                });
Exemplo n.º 29
0
 public static bool IsCustomAttributeDefined(this CustomAttributeHandleCollection handles, ReadOnlySpan <byte> ns, ReadOnlySpan <byte> name, EcmaModule module)
 {
     return(!handles.FindCustomAttributeByName(ns, name, module).IsNil);
 }
Exemplo n.º 30
0
 private static CustomAttributeHandle GetComVisibleAttribute(MetadataReader reader, CustomAttributeHandleCollection customAttributes)
 {
     foreach (CustomAttributeHandle attr in customAttributes)
     {
         CustomAttribute attribute            = reader.GetCustomAttribute(attr);
         MemberReference attributeConstructor = reader.GetMemberReference((MemberReferenceHandle)attribute.Constructor);
         TypeReference   attributeType        = reader.GetTypeReference((TypeReferenceHandle)attributeConstructor.Parent);
         if (reader.StringComparer.Equals(attributeType.Namespace, "System.Runtime.InteropServices") && reader.StringComparer.Equals(attributeType.Name, "ComVisibleAttribute"))
         {
             return(attr);
         }
     }
     return(new CustomAttributeHandle());
 }
Exemplo n.º 31
0
        public static bool TryFindRawDefaultValueFromCustomAttributes(this CustomAttributeHandleCollection handles, EcmaModule module, out object rawDefaultValue)
        {
            rawDefaultValue = default;

            MetadataReader reader = module.Reader;

            foreach (CustomAttributeHandle handle in handles)
            {
                CustomAttribute ca = handle.GetCustomAttribute(reader);
                EntityHandle    declaringTypeHandle = ca.TryGetDeclaringTypeHandle(reader);
                if (declaringTypeHandle.IsNil)
                {
                    continue;
                }

                if (declaringTypeHandle.TypeMatchesNameAndNamespace(Utf8Constants.SystemRuntimeCompilerServices, Utf8Constants.DateTimeConstantAttribute, reader))
                {
                    CustomAttributeData cad = handle.ToCustomAttributeData(module);
                    IList <CustomAttributeTypedArgument> cats = cad.ConstructorArguments;
                    if (cats.Count != 1)
                    {
                        return(false);
                    }

                    CoreTypes ct = module.Loader.GetAllFoundCoreTypes();
                    if (cats[0].ArgumentType != ct[CoreType.Int64])
                    {
                        return(false);
                    }

                    long ticks = (long)(cats[0].Value);
                    rawDefaultValue = new DateTimeConstantAttribute(ticks).Value;
                    return(true);
                }

                if (declaringTypeHandle.TypeMatchesNameAndNamespace(Utf8Constants.SystemRuntimeCompilerServices, Utf8Constants.DecimalConstantAttribute, reader))
                {
                    CustomAttributeData cad = handle.ToCustomAttributeData(module);
                    IList <CustomAttributeTypedArgument> cats = cad.ConstructorArguments;
                    if (cats.Count != 5)
                    {
                        return(false);
                    }

                    CoreTypes ct = module.Loader.GetAllFoundCoreTypes();
                    if (cats[0].ArgumentType != ct[CoreType.Byte] ||
                        cats[1].ArgumentType != ct[CoreType.Byte])
                    {
                        return(false);
                    }

                    byte scale = (byte)cats[0].Value;
                    byte sign  = (byte)cats[1].Value;

                    if (cats[2].ArgumentType == ct[CoreType.Int32] && cats[3].ArgumentType == ct[CoreType.Int32] && cats[4].ArgumentType == ct[CoreType.Int32])
                    {
                        int hi  = (int)cats[2].Value;
                        int mid = (int)cats[3].Value;
                        int lo  = (int)cats[4].Value;
                        rawDefaultValue = new DecimalConstantAttribute(scale, sign, hi, mid, lo).Value;
                        return(true);
                    }

                    if (cats[2].ArgumentType == ct[CoreType.UInt32] && cats[3].ArgumentType == ct[CoreType.UInt32] && cats[4].ArgumentType == ct[CoreType.UInt32])
                    {
                        uint hi  = (uint)cats[2].Value;
                        uint mid = (uint)cats[3].Value;
                        uint lo  = (uint)cats[4].Value;
                        rawDefaultValue = new DecimalConstantAttribute(scale, sign, hi, mid, lo).Value;
                        return(true);
                    }

                    return(false);
                }

                // Should we also look for CustomConstantAttribute too? Who uses that (other than DateTimeConstantAttribute which
                // we handled above?) CustomConstantAttribute is an abstract class which means we have to figure out how a subclass
                // we've never heard of would set the "Value" property which is kinda hard to do when you can't Invoke().
                // Even the CLR doesn't return consistent values for this between the raw and non-raw versions.
                // Even doing the subclass check would open the door to resolving types and dependency assemblies and their
                // resulting FileNotFoundExceptions. Which is exactly what we're trying to avoid with this name-based lookup approach.
            }

            return(false);
        }
Exemplo n.º 32
0
        } // Read

        public static uint Read(this NativeReader reader, uint offset, out CustomAttributeHandleCollection values)
        {
            values = new CustomAttributeHandleCollection(reader, offset);
            uint count;
            offset = reader.DecodeUnsigned(offset, out count);
            for (uint i = 0; i < count; ++i)
            {
                offset = reader.SkipInteger(offset);
            }
            return offset;
        } // Read