/// <summary>
/// Lookup a top level type referenced from metadata, names should be
/// compared case-sensitively.
/// </summary>
/// <param name="emittedName">
/// Full type name, possibly with generic name mangling.
/// </param>
/// <returns>
/// Symbol for the type, or MissingMetadataSymbol if the type isn't found.
/// </returns>
/// <remarks></remarks>
internal sealed override NamedTypeSymbol LookupTopLevelMetadataType(ref MetadataTypeName emittedName)
{
NamedTypeSymbol result;
NamespaceSymbol scope = this.GlobalNamespace.LookupNestedNamespace(emittedName.NamespaceSegments);
if ((object)scope == null)
{
// We failed to locate the namespace
result = new MissingMetadataTypeSymbol.TopLevel(this, ref emittedName);
}
else
{
result = scope.LookupMetadataType(ref emittedName);
}
Debug.Assert((object)result != null);
return(result);
}
/// <summary>
/// Lookup declaration for predefined CorLib type in this Assembly.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
/// <remarks></remarks>
internal override NamedTypeSymbol GetDeclaredSpecialType(SpecialType type)
{
#if DEBUG
foreach (var module in this.Modules)
{
Debug.Assert(module.GetReferencedAssemblies().Length == 0);
}
#endif
if (_lazySpecialTypes == null || (object)_lazySpecialTypes[(int)type] == null)
{
MetadataTypeName emittedName = MetadataTypeName.FromFullName(type.GetMetadataName(), useCLSCompliantNameArityEncoding: true);
ModuleSymbol module = this.Modules[0];
NamedTypeSymbol result = module.LookupTopLevelMetadataType(ref emittedName);
if (result.Kind != SymbolKind.ErrorType && result.DeclaredAccessibility != Accessibility.Public)
{
result = new MissingMetadataTypeSymbol.TopLevel(module, ref emittedName, type);
}
RegisterDeclaredSpecialType(result);
}
return(_lazySpecialTypes[(int)type]);
}
/// <summary>
/// Lookup declaration for predefined CorLib type in this Assembly. Only should be
/// called if it is know that this is the Cor Library (mscorlib).
/// </summary>
/// <param name="type"></param>
internal override NamedTypeSymbol GetDeclaredSpecialType(SpecialType type)
{
#if DEBUG
foreach (var module in this.Modules)
{
Debug.Assert(module.GetReferencedAssemblies().Length == 0);
}
#endif
if (_lazySpecialTypes == null)
{
Interlocked.CompareExchange(ref _lazySpecialTypes,
new NamedTypeSymbol[(int)SpecialType.Count + 1], null);
}
if ((object)_lazySpecialTypes[(int)type] == null)
{
MetadataTypeName emittedFullName = MetadataTypeName.FromFullName(SpecialTypes.GetMetadataName(type), useCLSCompliantNameArityEncoding: true);
NamedTypeSymbol corType = new MissingMetadataTypeSymbol.TopLevel(this.moduleSymbol, ref emittedFullName, type);
Interlocked.CompareExchange(ref _lazySpecialTypes[(int)type], corType, null);
}
return(_lazySpecialTypes[(int)type]);
}