/// <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>
public override Symbol GetDeclaredSpecialSymbol(object key)
{
#if DEBUG
foreach (var module in this.Modules)
{
Debug.Assert(module.ReferencedAssemblies.Length == 0);
}
#endif
Symbol result;
if (_lazySpecialSymbols == null || !_lazySpecialSymbols.ContainsKey(key))
{
ModuleSymbol module = this.Modules[0];
if (key is SpecialType type)
{
MetadataTypeName emittedName = MetadataTypeName.FromFullName(type.GetMetadataName(), useCLSCompliantNameArityEncoding: true);
result = module.LookupTopLevelMetadataType(ref emittedName);
if (result.Kind != LanguageSymbolKind.ErrorType && result.DeclaredAccessibility != Accessibility.Public)
{
result = new MissingMetadataTypeSymbol.TopLevel(module, ref emittedName, type);
}
}
else
{
result = this.Language.CompilationFactory.CreateSpecialSymbol(module, key);
if (result == null)
{
result = new MissingMetadataTypeSymbol.TopLevel(module, string.Empty, key.ToString(), 0, false);
}
}
RegisterDeclaredSpecialSymbol(key, ref result);
}
return(_lazySpecialSymbols[key]);
}
/// <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>
public 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 symbol in this Assembly.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
/// <remarks></remarks>
public override Symbol GetDeclaredSpecialSymbol(object key)
{
#if DEBUG
foreach (var module in this.Modules)
{
Debug.Assert(module.ReferencedAssemblies.Length == 0);
}
#endif
MetadataTypeName emittedName = default;
Symbol result = null;
if (_lazySpecialSymbols == null || !_lazySpecialSymbols.ContainsKey(key))
{
ModuleSymbol firstModule = this.Modules[0];
if (key is SpecialType)
{
emittedName = MetadataTypeName.FromFullName(((SpecialType)key).GetMetadataName(), useCLSCompliantNameArityEncoding: true);
result = firstModule.LookupTopLevelMetadataType(ref emittedName);
if (result.Kind == LanguageSymbolKind.ErrorType || result.DeclaredAccessibility != Accessibility.Public)
{
result = null;
}
}
else if (key is IModelObject metaSymbol)
{
foreach (var module in this.Modules)
{
if (module.TryGetSymbol(metaSymbol, out Symbol symbol))
{
result = symbol;
break;
}
}
}
if (result == null)
{
foreach (var module in this.Modules)
{
var symbol = this.Language.CompilationFactory.CreateSpecialSymbol(module, key);
if (symbol != null)
{
result = symbol;
break;
}
}
}
if (result == null || (result.Kind != LanguageSymbolKind.ErrorType && result.DeclaredAccessibility != Accessibility.Public))
{
if (key is SpecialType)
{
result = new MissingMetadataTypeSymbol.TopLevel(firstModule, ref emittedName, (SpecialType)key);
}
else
{
result = new MissingMetadataTypeSymbol.TopLevel(firstModule, string.Empty, key.ToString(), 0, false);
}
}
RegisterDeclaredSpecialSymbol(key, ref result);
}
return(_lazySpecialSymbols[key]);
}