private static bool IsBrowsingProhibitedByEditorBrowsableAttribute(
ISymbol symbol, ImmutableArray <AttributeData> attributes, bool hideAdvancedMembers, Compilation compilation, IMethodSymbol constructor)
{
constructor = constructor ?? EditorBrowsableHelpers.GetSpecialEditorBrowsableAttributeConstructor(compilation);
if (constructor == null)
{
return(false);
}
foreach (var attribute in attributes)
{
if (attribute.AttributeConstructor == constructor &&
attribute.ConstructorArguments.Length == 1 &&
attribute.ConstructorArguments.First().Value is int)
{
var state = (EditorBrowsableState)attribute.ConstructorArguments.First().Value;
if (EditorBrowsableState.Never == state ||
(hideAdvancedMembers && EditorBrowsableState.Advanced == state))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// First, remove symbols from the set if they are overridden by other symbols in the set.
/// If a symbol is overridden only by symbols outside of the set, then it is not removed.
/// This is useful for filtering out symbols that cannot be accessed in a given context due
/// to the existence of overriding members. Second, remove remaining symbols that are
/// unsupported (e.g. pointer types in VB) or not editor browsable based on the EditorBrowsable
/// attribute.
/// </summary>
public static ImmutableArray <T> FilterToVisibleAndBrowsableSymbols <T>(
this ImmutableArray <T> symbols, bool hideAdvancedMembers, Compilation compilation) where T : ISymbol
{
symbols = symbols.RemoveOverriddenSymbolsWithinSet();
// Since all symbols are from the same compilation, find the required attribute
// constructors once and reuse.
var editorBrowsableAttributeConstructor = EditorBrowsableHelpers.GetSpecialEditorBrowsableAttributeConstructor(compilation);
var typeLibTypeAttributeConstructors = EditorBrowsableHelpers.GetSpecialTypeLibTypeAttributeConstructors(compilation);
var typeLibFuncAttributeConstructors = EditorBrowsableHelpers.GetSpecialTypeLibFuncAttributeConstructors(compilation);
var typeLibVarAttributeConstructors = EditorBrowsableHelpers.GetSpecialTypeLibVarAttributeConstructors(compilation);
var hideModuleNameAttribute = compilation.HideModuleNameAttribute();
// PERF: HasUnsupportedMetadata may require recreating the syntax tree to get the base class, so first
// check to see if we're referencing a symbol defined in source.
Func <Location, bool> isSymbolDefinedInSource = l => l.IsInSource;
return(symbols.WhereAsArray(s =>
(s.Locations.Any(isSymbolDefinedInSource) || !s.HasUnsupportedMetadata) &&
!s.IsDestructor() &&
s.IsEditorBrowsable(
hideAdvancedMembers,
compilation,
editorBrowsableAttributeConstructor,
typeLibTypeAttributeConstructors,
typeLibFuncAttributeConstructors,
typeLibVarAttributeConstructors,
hideModuleNameAttribute)));
}
private static bool IsBrowsingProhibitedByEditorBrowsableAttribute(
ImmutableArray <AttributeData> attributes, bool hideAdvancedMembers, Compilation compilation, IMethodSymbol?constructor)
{
constructor ??= EditorBrowsableHelpers.GetSpecialEditorBrowsableAttributeConstructor(compilation);
if (constructor == null)
{
return(false);
}
foreach (var attribute in attributes)
{
if (Equals(attribute.AttributeConstructor, constructor) &&
attribute.ConstructorArguments.Length == 1 &&
attribute.ConstructorArguments.First().Value is int)
{
#nullable disable // Should use unboxed value from previous 'is int' https://github.com/dotnet/roslyn/issues/39166
var state = (EditorBrowsableState)attribute.ConstructorArguments.First().Value;
#nullable enable
if (EditorBrowsableState.Never == state ||
(hideAdvancedMembers && EditorBrowsableState.Advanced == state))
{
return(true);
}
}
private static void AddListItemsFromSymbols <TSymbol>(
IEnumerable <TSymbol> symbols,
Compilation compilation,
ProjectId projectId,
Func <TSymbol, ProjectId, bool, ObjectListItem> listItemCreator,
ImmutableArray <ObjectListItem> .Builder builder)
where TSymbol : class, ISymbol
{
var editorBrowsableAttributeConstructor = EditorBrowsableHelpers.GetSpecialEditorBrowsableAttributeConstructor(compilation);
var typeLibFuncAttributeConstructors = EditorBrowsableHelpers.GetSpecialTypeLibFuncAttributeConstructors(compilation);
var typeLibTypeAttributeConstructors = EditorBrowsableHelpers.GetSpecialTypeLibTypeAttributeConstructors(compilation);
var typeLibVarAttributeConstructors = EditorBrowsableHelpers.GetSpecialTypeLibVarAttributeConstructors(compilation);
foreach (var symbol in symbols)
{
if (!IncludeSymbol(symbol))
{
continue;
}
var hideAdvancedMembers = false;
var isHidden = !symbol.IsEditorBrowsable(
hideAdvancedMembers,
compilation,
editorBrowsableAttributeConstructor,
typeLibFuncAttributeConstructors,
typeLibTypeAttributeConstructors,
typeLibVarAttributeConstructors);
builder.Add(listItemCreator(symbol, projectId, isHidden));
}
}
private static bool IsBrowsingProhibitedByTypeLibVarAttribute(
ISymbol symbol, ImmutableArray <AttributeData> attributes, Compilation compilation, List <IMethodSymbol> constructors)
{
return(IsBrowsingProhibitedByTypeLibAttributeWorker(
symbol,
attributes,
constructors ?? EditorBrowsableHelpers.GetSpecialTypeLibVarAttributeConstructors(compilation),
TypeLibVarFlagsFHidden));
}
private static bool IsBrowsingProhibitedByTypeLibFuncAttribute(
ISymbol symbol, ImmutableArray <AttributeData> attributes, Compilation compilation, List <IMethodSymbol> constructors)
{
return(IsBrowsingProhibitedByTypeLibAttributeWorker(
symbol,
attributes,
constructors ?? EditorBrowsableHelpers.GetSpecialTypeLibFuncAttributeConstructors(compilation),
(int)System.Runtime.InteropServices.TypeLibFuncFlags.FHidden));
}
