/// <summary>
/// Creates a wrapper given a handle.
/// </summary>
/// <param name="entity">The handle of the element to be wrapped.</param>
/// <param name="assemblyMetadata">The module hosting the handle.</param>
/// <returns>A wrapper or null if one cannot be created.</returns>
public static IHandleTypeNamedWrapper?Create(EntityHandle entity, AssemblyMetadata assemblyMetadata)
{
if (entity.IsNil)
{
return(null);
}
switch (entity.Kind)
{
case HandleKind.EventDefinition:
return(EventWrapper.Create((EventDefinitionHandle)entity, assemblyMetadata));
case HandleKind.FieldDefinition:
return(FieldWrapper.Create((FieldDefinitionHandle)entity, assemblyMetadata));
case HandleKind.MethodDefinition:
return(MethodWrapper.Create((MethodDefinitionHandle)entity, assemblyMetadata));
case HandleKind.PropertyDefinition:
return(PropertyWrapper.Create((PropertyDefinitionHandle)entity, assemblyMetadata));
case HandleKind.TypeDefinition:
return(TypeWrapper.Create((TypeDefinitionHandle)entity, assemblyMetadata));
case HandleKind.MemberReference:
return(MemberReferenceWrapper.Create((MemberReferenceHandle)entity, assemblyMetadata));
case HandleKind.TypeSpecification:
var specification = TypeSpecificationWrapper.Create((TypeSpecificationHandle)entity, assemblyMetadata);
return(specification?.Type);
case HandleKind.InterfaceImplementation:
return(InterfaceImplementationWrapper.Create((InterfaceImplementationHandle)entity, assemblyMetadata));
case HandleKind.TypeReference:
var typeWrapper = TypeReferenceWrapper.Create((TypeReferenceHandle)entity, assemblyMetadata);
return(typeWrapper?.Type);
}
return(null);
}
/// <summary>
/// Initializes a new instance of the <see cref="AssemblyMetadata"/> class.
/// </summary>
/// <param name="fileName">The file name to the module.</param>
/// <param name="metadataRepository">The MetadataRepository unit that holds the module.</param>
/// <param name="typeProvider">A type provider for decoding signatures.</param>
internal AssemblyMetadata(string fileName, MetadataRepository metadataRepository, TypeProvider typeProvider)
{
FileName = fileName ?? throw new ArgumentNullException(nameof(fileName));
MetadataRepository = metadataRepository ?? throw new ArgumentNullException(nameof(metadataRepository));
TypeProvider = typeProvider;
_reader = new PEReader(new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read), PEStreamOptions.PrefetchMetadata);
MetadataReader = _reader.GetMetadataReader();
_types = new Lazy <IReadOnlyList <TypeWrapper> >(() => TypeWrapper.CreateChecked(MetadataReader.TypeDefinitions, this), LazyThreadSafetyMode.PublicationOnly);
_namesToTypes = new Lazy <IReadOnlyDictionary <string, TypeWrapper> >(() => Types.ToDictionary(x => x.FullName), LazyThreadSafetyMode.PublicationOnly);
_typeReferences = new Lazy <IReadOnlyList <TypeReferenceWrapper> >(() => TypeReferenceWrapper.CreateChecked(MetadataReader.TypeReferences, this), LazyThreadSafetyMode.PublicationOnly);
_assemblyReferences = new Lazy <IReadOnlyList <AssemblyReferenceWrapper> >(() => AssemblyReferenceWrapper.CreateChecked(MetadataReader.AssemblyReferences, this), LazyThreadSafetyMode.PublicationOnly);
_methodSemanticsLookup = new Lazy <MethodSemanticsLookup>(() => new MethodSemanticsLookup(MetadataReader), LazyThreadSafetyMode.PublicationOnly);
_mainAssembly = new Lazy <AssemblyWrapper>(() => new AssemblyWrapper(this), LazyThreadSafetyMode.PublicationOnly);
_moduleDefinition = new Lazy <ModuleDefinitionWrapper>(() => ModuleDefinitionWrapper.Create(MetadataReader.GetModuleDefinition(), this), LazyThreadSafetyMode.PublicationOnly);
}
