internal static NamespaceSymbol BuildSymbol(
this MergedNamespaceDeclaration declaration,
NamespaceOrTypeSymbol parent,
DiagnosticBag diagnostics)
{
return new SourceNamespaceSymbol(parent, declaration, diagnostics);
}
internal QualifiedNameBinder(NamespaceOrTypeSymbol qualifier, Binder outer)
: base(qualifier, new BuckStopsHereBinder(outer.Compilation, outer.SourceTree))
{
if (outer == null || qualifier == null)
throw new ArgumentNullException();
this.ambient = outer;
this.qualifier = qualifier;
}
private ImmutableArray <Symbol> BindMemberCref(MemberCrefSyntax syntax, NamespaceOrTypeSymbol containerOpt, out Symbol ambiguityWinner, DiagnosticBag diagnostics)
{
if ((object)containerOpt != null && containerOpt.Kind == SymbolKind.TypeParameter)
{
// As in normal lookup (see CreateErrorIfLookupOnTypeParameter), you can't dot into a type parameter
// (though you can dot into an expression of type parameter type).
CrefSyntax crefSyntax = GetRootCrefSyntax(syntax);
diagnostics.Add(ErrorCode.WRN_BadXMLRef, crefSyntax.Location, crefSyntax.ToFullString());
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
ImmutableArray <Symbol> result;
switch (syntax.Kind)
{
case SyntaxKind.NameMemberCref:
result = BindNameMemberCref((NameMemberCrefSyntax)syntax, containerOpt, out ambiguityWinner, diagnostics);
break;
case SyntaxKind.IndexerMemberCref:
result = BindIndexerMemberCref((IndexerMemberCrefSyntax)syntax, containerOpt, out ambiguityWinner, diagnostics);
break;
case SyntaxKind.OperatorMemberCref:
result = BindOperatorMemberCref((OperatorMemberCrefSyntax)syntax, containerOpt, out ambiguityWinner, diagnostics);
break;
case SyntaxKind.ConversionOperatorMemberCref:
result = BindConversionOperatorMemberCref((ConversionOperatorMemberCrefSyntax)syntax, containerOpt, out ambiguityWinner, diagnostics);
break;
default:
Debug.Assert(false, "Unexpected member cref kind " + syntax.Kind);
ambiguityWinner = null;
result = ImmutableArray <Symbol> .Empty;
break;
}
if (!result.Any())
{
CrefSyntax crefSyntax = GetRootCrefSyntax(syntax);
diagnostics.Add(ErrorCode.WRN_BadXMLRef, crefSyntax.Location, crefSyntax.ToFullString());
}
return(result);
}
public static Symbol GetMember(this NamespaceOrTypeSymbol container, string qualifiedName)
{
NamespaceOrTypeSymbol lastContainer;
var members = GetMembers(container, qualifiedName, out lastContainer);
if (members.Length == 0)
{
return(null);
}
else if (members.Length > 1)
{
Assert.True(false, "Found multiple members of specified name:\r\n" + string.Join("\r\n", members));
}
return(members.Single());
}
/// <summary>
/// Gets all concept instances directly declared in a container.
/// </summary>
/// <param name="container">
/// The container to visit.
/// </param>
/// <param name="instances">
/// The instance array to populate.
/// </param>
/// <param name="originalBinder">
/// The call-site binder.
/// </param>
/// <param name="useSiteDiagnostics">
/// The set of use-site diagnostics to populate with any errors.
/// </param>
private void GetConceptInstancesInContainer(NamespaceOrTypeSymbol container, ArrayBuilder <TypeSymbol> instances, Binder originalBinder, ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
foreach (var member in container.GetTypeMembers())
{
if (!originalBinder.IsAccessible(member, ref useSiteDiagnostics, originalBinder.ContainingType))
{
continue;
}
// Assuming that instances don't contain sub-instances.
if (member.IsInstance)
{
instances.Add(member);
}
}
}
public static void LookupSymbolsSimpleName(
this Microsoft.CodeAnalysis.CSharp.Binder binder,
LookupResult result,
NamespaceOrTypeSymbol qualifierOpt,
string plainName,
int arity,
ConsList <TypeSymbol> basesBeingResolved,
LookupOptions options,
bool diagnose,
ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
CompoundUseSiteInfo <AssemblySymbol> useSiteInfo = default;
binder.LookupSymbolsSimpleName(result, qualifierOpt, plainName, arity, basesBeingResolved, options, diagnose, ref useSiteInfo);
AddDiagnosticInfos(ref useSiteDiagnostics, useSiteInfo);
}
private ImmutableArray <Symbol> BindTypeCref(TypeCrefSyntax syntax, out Symbol ambiguityWinner, DiagnosticBag diagnostics)
{
NamespaceOrTypeSymbol result = BindNamespaceOrTypeSymbolInCref(syntax.Type);
// NOTE: we don't have to worry about the case where a non-error type is constructed
// with erroneous type arguments, because only MemberCrefs have type arguments -
// all other crefs only have type parameters.
if (result.Kind == SymbolKind.ErrorType)
{
diagnostics.Add(ErrorCode.WRN_BadXMLRef, syntax.Location, syntax.ToFullString());
}
// We'll never have more than one type, but it is conceivable that result could
// be an ExtendedErrorTypeSymbol with multiple candidates.
ambiguityWinner = null;
return(ImmutableArray.Create <Symbol>(result));
}
/// <summary>
/// We can't use BindNamespaceOrTypeSymbol, since it doesn't return inaccessible symbols (directly).
/// </summary>
/// <remarks>
/// Guaranteed not to return null.
///
/// CONSIDER: As in dev11, we don't handle ambiguity at this level. Hypothetically,
/// we could just pick one, though an "ideal" solution would probably involve a search
/// down all ambiguous branches.
/// </remarks>
private NamespaceOrTypeSymbol BindNamespaceOrTypeSymbolInCref(TypeSyntax syntax)
{
Debug.Assert(Flags.Includes(BinderFlags.Cref));
// BREAK: Dev11 used to do a second lookup, ignoring accessibility, if the first lookup failed.
// VS BUG#3321137: we need to try to find accessible members first
// especially for compiler generated events (the backing field is private
// but has the same name as the public event, and there is no easy way to
// set the isEvent field on imported MEMBVARSYMs)
// Diagnostics that don't prevent us from getting a symbol don't matter - the caller will report
// an umbrella diagnostic if the result is an error type.
NamespaceOrTypeSymbol namespaceOrTypeSymbol = BindNamespaceOrTypeSymbol(syntax, BindingDiagnosticBag.Discarded).NamespaceOrTypeSymbol;
Debug.Assert((object)namespaceOrTypeSymbol != null);
return(namespaceOrTypeSymbol);
}
internal BinderContext BaseContext(NamespaceOrTypeSymbol current)
{
var typeContainer = current as NamedTypeSymbol;
if (typeContainer == null)
{
return(Next);
}
var decl = Declaration.Syntax.GetSyntax() as TypeDeclarationSyntax;
if (decl == null)
{
return(Next);
}
return(new WithClassTypeParametersBinderContext(Next.Location(Declaration.Syntax.GetSyntax()), Declaration.Syntax, typeContainer, Next));
}
internal static NamespaceOrTypeSymbol BuildSymbol(
this MergedNamespaceOrTypeDeclaration declaration,
NamespaceOrTypeSymbol parent,
DiagnosticBag diagnostics)
{
if (declaration is MergedNamespaceDeclaration)
{
return(BuildSymbol((MergedNamespaceDeclaration)declaration, parent, diagnostics));
}
else if (declaration is MergedTypeDeclaration)
{
return(BuildSymbol((MergedTypeDeclaration)declaration, parent, diagnostics));
}
else
{
throw new InvalidOperationException();
}
}
internal static NamespaceOrTypeSymbol BuildSymbol(
this MergedNamespaceOrTypeDeclaration declaration,
NamespaceOrTypeSymbol parent,
DiagnosticBag diagnostics)
{
if (declaration is MergedNamespaceDeclaration)
{
return BuildSymbol((MergedNamespaceDeclaration)declaration, parent, diagnostics);
}
else if (declaration is MergedTypeDeclaration)
{
return BuildSymbol((MergedTypeDeclaration)declaration, parent, diagnostics);
}
else
{
throw new InvalidOperationException();
}
}
/// <summary>
/// Gets all concepts directly declared in a container.
/// </summary>
/// <param name="container">
/// The container to visit.
/// </param>
/// <param name="concepts">
/// The instance array to populate.
/// </param>
/// <param name="originalBinder">
/// The call-site binder.
/// </param>
/// <param name="useSiteDiagnostics">
/// The set of use-site diagnostics to populate with any errors.
/// </param>
/// <param name="options">
/// The concept look-up options to use.
/// </param>
private void GetConceptsInContainer(NamespaceOrTypeSymbol container, ArrayBuilder <NamedTypeSymbol> concepts, Binder originalBinder, ref HashSet <DiagnosticInfo> useSiteDiagnostics, ConceptSearchOptions options)
{
Debug.Assert(container != null, "container being searched should not be null: this should have been checked earlier");
var useStandaloneInstances = (options & ConceptSearchOptions.AllowStandaloneInstances) != 0;
foreach (var member in container.GetTypeMembers())
{
if (!originalBinder.IsAccessible(member, ref useSiteDiagnostics, originalBinder.ContainingType))
{
continue;
}
// Concepts can declare sub-concepts, but (for now) we don't
// consider them.
if (member.IsConcept || (useStandaloneInstances && member.IsStandaloneInstance))
{
concepts.Add(member);
}
}
}
internal IEnumerable <TypeParameterBuilder> TypeParameterBinders(NamespaceOrTypeSymbol current)
{
var type = current as NamedTypeSymbol;
if (type == null)
{
return(Enumerable.Empty <TypeParameterBuilder>());
}
var baseBinder = BaseContext(type) as WithClassTypeParametersBinderContext;
if (baseBinder == null)
{
return(Enumerable.Empty <TypeParameterBuilder>()); // no params in declaration
}
return
(baseBinder.TypeParameters
.Select(ta => new TypeParameterBuilder(ta, type, baseBinder)));
}
public virtual LookupConstraints Update(
string name,
string metadataName,
ImmutableArray <ModelObjectDescriptor> kinds,
NamespaceOrTypeSymbol qualifierOpt,
ConsList <TypeSymbol> basesBeingResolved,
Binder originalBinder,
TypeSymbol accessThroughType,
LookupOptions options,
bool diagnose,
HashSet <DiagnosticInfo> useSiteDiagnostics)
{
if (!ReferenceEquals(qualifierOpt, this.QualifierOpt) || name != this.Name || metadataName != this.MetadataName ||
kinds != this.Kinds || !ReferenceEquals(basesBeingResolved, this.BasesBeingResolved) || !ReferenceEquals(originalBinder, this.OriginalBinder) ||
!ReferenceEquals(accessThroughType, this.AccessThroughType) ||
options != this.Options || diagnose != this.Diagnose || !ReferenceEquals(useSiteDiagnostics, this.UseSiteDiagnostics))
{
return(new LookupConstraints(name, metadataName, kinds, qualifierOpt, basesBeingResolved, originalBinder, accessThroughType, options, diagnose, useSiteDiagnostics));
}
return(this);
}
internal override IEnumerable <MemberBuilder> NonContainerBuilders(NamespaceOrTypeSymbol current)
{
SyntaxNode syntax = Declaration.Syntax.GetSyntax();
switch (syntax.Kind)
{
case SyntaxKind.EnumDeclaration:
case SyntaxKind.DelegateDeclaration:
ReportDiagnostic(syntax, ErrorCode.ERR_UnimplementedOp);
return(Enumerable.Empty <MemberBuilder>());
case SyntaxKind.ClassDeclaration:
case SyntaxKind.InterfaceDeclaration:
case SyntaxKind.StructDeclaration:
var visitor = new MemberBinderVisitor(current as NamedTypeSymbol, BodyContext(current));
TypeDeclarationSyntax typeDecl = syntax as TypeDeclarationSyntax;
return(typeDecl.Members.SelectMany(member => visitor.BinderForMember(member)).Where(b => b != null));
default:
throw new NotSupportedException();
}
}
private static ImmutableArray <Symbol> GetMembers(NamespaceOrTypeSymbol container, string qualifiedName, out NamespaceOrTypeSymbol lastContainer)
{
var parts = SplitMemberName(qualifiedName);
lastContainer = container;
for (int i = 0; i < parts.Length - 1; i++)
{
var nestedContainer = (NamespaceOrTypeSymbol)lastContainer.GetMember(parts[i]);
if (nestedContainer == null)
{
// If there wasn't a nested namespace or type with that name, assume it's a
// member name that includes dots (e.g. explicit interface implementation).
return(lastContainer.GetMembers(string.Join(".", parts.Skip(i))));
}
else
{
lastContainer = nestedContainer;
}
}
return(lastContainer.GetMembers(parts[parts.Length - 1]));
}
/// <summary>
/// Creates a binder for a container with imports (usings and extern aliases) that can be
/// retrieved from <paramref name="declarationSyntax"/>.
/// </summary>
internal InContainerBinder(NamespaceOrTypeSymbol container, Binder next, CSharpSyntaxNode declarationSyntax, bool inUsing)
: base(next)
{
Debug.Assert((object)container != null);
Debug.Assert(declarationSyntax != null);
_container = container;
_computeImports = basesBeingResolved => Imports.FromSyntax(declarationSyntax, this, basesBeingResolved, inUsing);
if (!inUsing)
{
if (declarationSyntax.Kind() == SyntaxKind.CompilationUnit)
{
var compilationUnit = (CompilationUnitSyntax)declarationSyntax;
_usingsSyntax = compilationUnit.Usings;
}
else if (declarationSyntax.Kind() == SyntaxKind.NamespaceDeclaration)
{
var namespaceDecl = (NamespaceDeclarationSyntax)declarationSyntax;
_usingsSyntax = namespaceDecl.Usings;
}
}
}
public LookupConstraints(
string name = null,
string metadataName = null,
ImmutableArray <ModelObjectDescriptor> kinds = default,
NamespaceOrTypeSymbol qualifierOpt = null,
ConsList <TypeSymbol> basesBeingResolved = null,
Binder originalBinder = null,
TypeSymbol accessThroughType = null,
LookupOptions options = LookupOptions.Default,
bool diagnose = true,
HashSet <DiagnosticInfo> useSiteDiagnostics = null)
{
QualifierOpt = qualifierOpt;
Name = name;
MetadataName = metadataName ?? name;
Kinds = kinds;
BasesBeingResolved = basesBeingResolved;
OriginalBinder = originalBinder;
AccessThroughType = accessThroughType;
Options = options;
Diagnose = diagnose;
UseSiteDiagnostics = useSiteDiagnostics;
}
internal override IEnumerable<NamespaceOrTypeBuilder> TypeOrNamespaceBuilders(NamespaceOrTypeSymbol current)
{
BinderContext next; // push diagnostics to the top level
NamespaceOrTypeSymbol merged; // lookup in a merged context
if (this is TopLevelBuilder1)
{
next = this;
merged = Compilation.GlobalNamespace;
}
else
{
next = this.Next;
merged = (next as InContainerBinderContext).Container.GetMembers(current.Name).OfType<Symbol, NamespaceSymbol>().Single();
}
BinderContext bodyContext = new InContainerBinderContext(declaration, merged, next);
foreach (var d in declaration.SingleChildren)
{
yield return d.Kind == DeclarationKind.Namespace
? (NamespaceOrTypeBuilder)new NamespaceBuilder1(current, d, bodyContext)
: (NamespaceOrTypeBuilder)new NamedTypeBuilder(current, d, bodyContext);
}
}
private static void GetSourceMemberSymbols(NamespaceOrTypeSymbol symbol, List <ISymbol> list, LocalSymbolDumper localDumper)
{
foreach (var memberSymbol in symbol.GetMembers())
{
list.Add(memberSymbol);
switch (memberSymbol.Kind)
{
case SymbolKind.NamedType:
case SymbolKind.Namespace:
GetSourceMemberSymbols((NamespaceOrTypeSymbol)memberSymbol, list, localDumper);
break;
case SymbolKind.Method:
var method = (MethodSymbol)memberSymbol;
foreach (var parameter in method.Parameters)
{
list.Add(parameter);
}
if (localDumper != null)
{
localDumper.GetLocalSymbols(method, list);
}
break;
case SymbolKind.Field:
if (localDumper != null)
{
localDumper.GetLocalSymbols((FieldSymbol)memberSymbol, list);
}
break;
}
}
}
private ImmutableArray <Symbol> ComputeSortedCrefMembers(NamespaceOrTypeSymbol containerOpt, string memberName, int arity, bool hasParameterList, ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
// Since we may find symbols without going through the lookup API,
// expose the symbols via an ArrayBuilder.
ArrayBuilder <Symbol> builder;
{
LookupResult result = LookupResult.GetInstance();
this.LookupSymbolsOrMembersInternal(
result,
containerOpt,
name: memberName,
arity: arity,
basesBeingResolved: null,
options: LookupOptions.AllMethodsOnArityZero,
diagnose: false,
useSiteDiagnostics: ref useSiteDiagnostics);
// CONSIDER: Dev11 also checks for a constructor in the event of an ambiguous result.
if (result.IsMultiViable)
{
// Dev11 doesn't consider members from System.Object when the container is an interface.
// Lookup should already have dropped such members.
builder = ArrayBuilder <Symbol> .GetInstance();
builder.AddRange(result.Symbols);
result.Free();
}
else
{
result.Free(); // Won't be using this.
// Dev11 has a complicated two-stage process for determining when a cref is really referring to a constructor.
// Under two sets of conditions, XmlDocCommentBinder::bindXMLReferenceName will decide that a name refers
// to a constructor and under one set of conditions, the calling method, XmlDocCommentBinder::bindXMLReference,
// will roll back that decision and return null.
// In XmlDocCommentBinder::bindXMLReferenceName:
// 1) If an unqualified, non-generic name didn't bind to anything and the name matches the name of the type
// to which the doc comment is applied, then bind to a constructor.
// 2) If a qualified, non-generic name didn't bind to anything and the LHS of the qualified name is a type
// with the same name, then bind to a constructor.
// Quoted from XmlDocCommentBinder::bindXMLReference:
// Filtering out the case where specifying the name of a generic type without specifying
// any arity returns a constructor. This case shouldn't return anything. Note that
// returning the constructors was a fix for the wonky constructor behavior, but in order
// to not introduce a regression and breaking change we return NULL in this case.
// e.g.
//
// /// <see cref="Goo"/>
// class Goo<T> { }
//
// This cref used not to bind to anything, because before it was looking for a type and
// since there was no arity, it didn't find Goo<T>. Now however, it finds Goo<T>.ctor,
// which is arguably correct, but would be a breaking change (albeit with minimal impact)
// so we catch this case and chuck out the symbol found.
// In Roslyn, we're doing everything in one pass, rather than guessing and rolling back.
// As in the native compiler, we treat this as a fallback case - something that actually has the
// specified name is preferred.
NamedTypeSymbol constructorType = null;
if (arity == 0) // Member arity
{
NamedTypeSymbol containerType = containerOpt as NamedTypeSymbol;
if ((object)containerType != null)
{
// Case 1: If the name is qualified by a type with the same name, then we want a
// constructor (unless the type is generic, the cref is on/in the type (but not
// on/in a nested type), and there were no parens after the member name).
if (containerType.Name == memberName && (hasParameterList || containerType.Arity == 0 || this.ContainingType != containerType.OriginalDefinition))
{
constructorType = containerType;
}
}
else if ((object)containerOpt == null && hasParameterList)
{
// Case 2: If the name is not qualified by anything, but we're in the scope
// of a type with the same name (regardless of arity), then we want a constructor,
// as long as there were parens after the member name.
NamedTypeSymbol binderContainingType = this.ContainingType;
if ((object)binderContainingType != null && memberName == binderContainingType.Name)
{
constructorType = binderContainingType;
}
}
}
if ((object)constructorType != null)
{
ImmutableArray <MethodSymbol> instanceConstructors = constructorType.InstanceConstructors;
int numInstanceConstructors = instanceConstructors.Length;
if (numInstanceConstructors == 0)
{
return(ImmutableArray <Symbol> .Empty);
}
builder = ArrayBuilder <Symbol> .GetInstance(numInstanceConstructors);
builder.AddRange(instanceConstructors);
}
else
{
return(ImmutableArray <Symbol> .Empty);
}
}
}
Debug.Assert(builder != null);
// Since we resolve ambiguities by just picking the first symbol we encounter,
// the order of the symbols matters for repeatability.
if (builder.Count > 1)
{
builder.Sort(ConsistentSymbolOrder.Instance);
}
return(builder.ToImmutableAndFree());
}
// NOTE: not guaranteed to be a method (e.g. class op_Implicit)
private ImmutableArray <Symbol> BindConversionOperatorMemberCref(ConversionOperatorMemberCrefSyntax syntax, NamespaceOrTypeSymbol containerOpt, out Symbol ambiguityWinner, DiagnosticBag diagnostics)
{
const int arity = 0;
string memberName = syntax.ImplicitOrExplicitKeyword.Kind() == SyntaxKind.ImplicitKeyword
? WellKnownMemberNames.ImplicitConversionName
: WellKnownMemberNames.ExplicitConversionName;
ImmutableArray <Symbol> sortedSymbols = ComputeSortedCrefMembers(syntax, containerOpt, memberName, arity, syntax.Parameters != null, diagnostics);
if (sortedSymbols.IsEmpty)
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
TypeSymbol returnType = BindCrefParameterOrReturnType(syntax.Type, syntax, diagnostics);
// Filter out methods with the wrong return type, since overload resolution won't catch these.
sortedSymbols = sortedSymbols.WhereAsArray(symbol =>
symbol.Kind != SymbolKind.Method || ((MethodSymbol)symbol).ReturnType.TypeSymbol == returnType);
if (!sortedSymbols.Any())
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
return(ProcessCrefMemberLookupResults(
sortedSymbols,
arity,
syntax,
typeArgumentListSyntax: null,
parameterListSyntax: syntax.Parameters,
ambiguityWinner: out ambiguityWinner,
diagnostics: diagnostics));
}
/// <summary>
/// Perform lookup (optionally, in a specified container). If nothing is found and the member name matches the containing type
/// name, then use the instance constructors of the type instead. The resulting symbols are sorted since tie-breaking is based
/// on order and we want cref binding to be repeatable.
/// </summary>
/// <remarks>
/// Never returns null.
/// </remarks>
private ImmutableArray <Symbol> ComputeSortedCrefMembers(CSharpSyntaxNode syntax, NamespaceOrTypeSymbol containerOpt, string memberName, int arity, bool hasParameterList, DiagnosticBag diagnostics)
{
HashSet <DiagnosticInfo> useSiteDiagnostics = null;
var result = ComputeSortedCrefMembers(containerOpt, memberName, arity, hasParameterList, ref useSiteDiagnostics);
diagnostics.Add(syntax, useSiteDiagnostics);
return(result);
}
private ImmutableArray <Symbol> BindIndexerMemberCref(IndexerMemberCrefSyntax syntax, NamespaceOrTypeSymbol containerOpt, out Symbol ambiguityWinner, DiagnosticBag diagnostics)
{
const int arity = 0;
ImmutableArray <Symbol> sortedSymbols = ComputeSortedCrefMembers(syntax, containerOpt, WellKnownMemberNames.Indexer, arity, syntax.Parameters != null, diagnostics);
if (sortedSymbols.IsEmpty)
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
// Since only indexers are named WellKnownMemberNames.Indexer.
Debug.Assert(sortedSymbols.All(SymbolExtensions.IsIndexer));
// NOTE: guaranteed to be a property, because only indexers are considered.
return(ProcessCrefMemberLookupResults(
sortedSymbols,
arity,
syntax,
typeArgumentListSyntax: null,
parameterListSyntax: syntax.Parameters,
ambiguityWinner: out ambiguityWinner,
diagnostics: diagnostics));
}
// NOTE: not guaranteed to be a method (e.g. class op_Addition)
// NOTE: constructor fallback logic applies
private ImmutableArray <Symbol> BindOperatorMemberCref(OperatorMemberCrefSyntax syntax, NamespaceOrTypeSymbol containerOpt, out Symbol ambiguityWinner, DiagnosticBag diagnostics)
{
const int arity = 0;
CrefParameterListSyntax parameterListSyntax = syntax.Parameters;
// NOTE: Prefer binary to unary, unless there is exactly one parameter.
// CONSIDER: we're following dev11 by never using a binary operator name if there's
// exactly one parameter, but doing so would allow us to match single-parameter constructors.
SyntaxKind operatorTokenKind = syntax.OperatorToken.Kind();
string memberName = parameterListSyntax != null && parameterListSyntax.Parameters.Count == 1
? null
: OperatorFacts.BinaryOperatorNameFromSyntaxKindIfAny(operatorTokenKind);
memberName = memberName ?? OperatorFacts.UnaryOperatorNameFromSyntaxKindIfAny(operatorTokenKind);
if (memberName == null)
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
ImmutableArray <Symbol> sortedSymbols = ComputeSortedCrefMembers(syntax, containerOpt, memberName, arity, syntax.Parameters != null, diagnostics);
if (sortedSymbols.IsEmpty)
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
return(ProcessCrefMemberLookupResults(
sortedSymbols,
arity,
syntax,
typeArgumentListSyntax: null,
parameterListSyntax: parameterListSyntax,
ambiguityWinner: out ambiguityWinner,
diagnostics: diagnostics));
}
private void AppendMembers(StringBuilder result, NamespaceOrTypeSymbol container, string indent)
{
string memberIndent;
if (container is NamedTypeSymbol)
{
memberIndent = indent + " ";
result.Append(indent);
result.AppendLine("{");
AppendCustomAttributes(result, container, indent, inBlock: true);
if (container.GetAttributes().Length > 0)
{
result.AppendLine();
}
}
else
{
memberIndent = indent;
}
foreach (var member in container.GetMembers().OrderBy(m => m.Name, System.StringComparer.InvariantCulture))
{
switch (member.Kind)
{
case SymbolKind.NamedType:
var namedType = (PENamedTypeSymbol)member;
result.Append(memberIndent);
result.Append(".class ");
MetadataSignatureHelper.AppendTypeAttributes(result, namedType.Flags);
result.Append(" ");
result.Append(member);
if (namedType.BaseType() != null)
{
result.AppendLine();
result.Append(memberIndent);
result.Append(" extends ");
result.Append(namedType.BaseType());
}
if (namedType.Interfaces().Length > 0)
{
result.AppendLine();
result.Append(memberIndent);
result.Append(" implements ");
result.Append(string.Join(", ", namedType.Interfaces()));
}
result.AppendLine();
AppendMembers(result, namedType, memberIndent);
break;
case SymbolKind.Namespace:
var ns = member as PENamespaceSymbol;
if ((object)ns != null)
{
AppendMembers(result, ns, indent);
}
break;
case SymbolKind.Method:
var method = member as PEMethodSymbol;
if ((object)method != null && method.AssociatedSymbol == null)
{
result.Append(memberIndent);
result.Append(".method ");
AppendMethod(result, method, memberIndent);
AppendCustomAttributes(result, member, memberIndent, inBlock: false);
}
break;
case SymbolKind.Field:
var field = (PEFieldSymbol)member;
result.Append(memberIndent);
result.Append(".field ");
MetadataSignatureHelper.AppendFieldAttributes(result, field.Flags);
result.Append(" ");
result.Append(field.Type);
result.Append(" ");
result.Append(member.Name);
result.AppendLine();
AppendCustomAttributes(result, member, memberIndent, inBlock: false);
break;
case SymbolKind.Property:
var property = (PEPropertySymbol)member;
string propertyName;
result.Append(memberIndent);
result.Append(".property ");
PropertyAttributes propertyAttrs;
((PEModuleSymbol)container.ContainingModule).Module.GetPropertyDefPropsOrThrow(property.Handle, out propertyName, out propertyAttrs);
if (MetadataSignatureHelper.AppendPropertyAttributes(result, propertyAttrs))
{
result.Append(" ");
}
result.Append(property.Type);
result.Append(" ");
result.Append(property.Name);
result.AppendLine();
result.Append(memberIndent);
result.AppendLine("{");
AppendCustomAttributes(result, member, memberIndent, inBlock: true);
if (property.GetMethod != null)
{
result.Append(memberIndent);
result.Append(" .get ");
AppendMethod(result, (PEMethodSymbol)property.GetMethod, memberIndent);
}
if (property.SetMethod != null)
{
result.Append(memberIndent);
result.Append(" .set ");
AppendMethod(result, (PEMethodSymbol)property.SetMethod, memberIndent);
}
result.Append(memberIndent);
result.AppendLine("}");
break;
case SymbolKind.Event:
var evnt = (PEEventSymbol)member;
result.Append(memberIndent);
result.Append(".event ");
string eventName;
EventAttributes eventAttrs;
EntityHandle type;
((PEModuleSymbol)container.ContainingModule).Module.GetEventDefPropsOrThrow(evnt.Handle, out eventName, out eventAttrs, out type);
if (MetadataSignatureHelper.AppendEventAttributes(result, eventAttrs))
{
result.Append(" ");
}
result.Append(evnt.Type);
result.Append(" ");
result.Append(evnt.Name);
result.AppendLine();
result.Append(memberIndent);
result.Append("{");
result.AppendLine();
AppendCustomAttributes(result, member, memberIndent, inBlock: true);
if (evnt.RemoveMethod != null)
{
result.Append(memberIndent);
result.Append(" .removeon ");
AppendMethod(result, (PEMethodSymbol)evnt.RemoveMethod, memberIndent);
}
if (evnt.AddMethod != null)
{
result.Append(memberIndent);
result.Append(" .addon ");
AppendMethod(result, (PEMethodSymbol)evnt.AddMethod, memberIndent);
}
result.Append(memberIndent);
result.AppendLine("}");
break;
}
}
if (container is NamedTypeSymbol)
{
result.Append(indent);
result.AppendLine("}");
}
}
public static Symbol ChildSymbol(this NamespaceOrTypeSymbol parent, string name)
{
return(parent.GetMembers(name).First());
}
public static NamedTypeSymbol GetTypeMember(this NamespaceOrTypeSymbol symbol, string name)
{
return(symbol.GetTypeMembers(name).Single());
}
internal override void LookupMembers(LookupResult result, NamespaceOrTypeSymbol nsOrType, string name, int arity, Utilities.ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose)
{
options |= LookupOptions.NamespacesOrTypesOnly | LookupOptions.MustNotBeNestedType;
base.LookupMembers(result, nsOrType, name, arity, basesBeingResolved, options, originalBinder, diagnose);
}
internal ImplicitTypeSymbol(NamespaceOrTypeSymbol containingSymbol, MergedTypeDeclaration declaration, DiagnosticBag diagnostics)
: base(containingSymbol, declaration, diagnostics)
{
}
public static T GetMember <T>(this NamespaceOrTypeSymbol symbol, string qualifiedName) where T : Symbol
{
return((T)symbol.GetMember(qualifiedName));
}
internal NamedTypeSymbolBase(NamespaceOrTypeSymbol containingSymbol, string name, int arity, bool isSerializable = false)
{
this.containingSymbol = containingSymbol;
this.name = name;
this.arity = arity;
}
private string GetNamespaceOrTypeString(NamespaceOrTypeSymbol symbol)
{
return(stringCache.GetOrAdd(symbol, buildNamespaceOrTypeString));
}
private ImmutableArray <Cci.NamespaceScope> BuildNamespaceScopes(ConsList <Imports> debugImports)
{
var namespaceScopes = ArrayBuilder <Cci.NamespaceScope> .GetInstance();
foreach (Imports imports in debugImports)
{
var usedNamespaces = ArrayBuilder <Cci.UsedNamespaceOrType> .GetInstance();
// NOTE: order based on dev10: extern aliases, then usings, then aliases namespaces and types
ImmutableArray <AliasAndExternAliasDirective> externAliases = imports.ExternAliases;
if (!externAliases.IsDefault)
{
foreach (var alias in externAliases)
{
usedNamespaces.Add(Cci.UsedNamespaceOrType.CreateCSharpExternNamespace(alias.Alias.Name));
}
}
ImmutableArray <NamespaceOrTypeAndUsingDirective> usings = imports.Usings;
if (!usings.IsDefault)
{
foreach (var nsOrType in usings)
{
NamespaceOrTypeSymbol namespaceOrType = nsOrType.NamespaceOrType;
if (namespaceOrType.IsNamespace)
{
NamespaceSymbol @namespace = (NamespaceSymbol)namespaceOrType;
string namespaceString = GetNamespaceOrTypeString(@namespace);
// TODO: incorrect, see bug #913022
string externAlias = GetExternAliases(@namespace).FirstOrDefault();
usedNamespaces.Add(Cci.UsedNamespaceOrType.CreateCSharpNamespace(namespaceString, externAlias));
}
else
{
// This is possible in C# scripts, but the EE doesn't support the meaning intended by script files.
// Specifically, when a script includes "using System.Console;" the intended meaning is that the
// static methods of System.Console are available but System.Console itself is not. Even if we output
// "TSystem.Console" - which the EE may or may not support - we would only see System.Console become
// available.
}
}
}
Dictionary <string, AliasAndUsingDirective> aliasSymbols = imports.UsingAliases;
if (aliasSymbols != null)
{
foreach (var pair in aliasSymbols)
{
var alias = pair.Key;
var symbol = pair.Value.Alias;
Debug.Assert(!symbol.IsExtern);
var target = symbol.Target;
var targetString = GetNamespaceOrTypeString(target);
if (target.Kind == SymbolKind.Namespace)
{
// TODO: incorrect, see bug #913022
string externAlias = GetExternAliases((NamespaceSymbol)target).FirstOrDefault();
usedNamespaces.Add(Cci.UsedNamespaceOrType.CreateCSharpNamespaceAlias(targetString, alias, externAlias));
}
else
{
Debug.Assert(target is TypeSymbol);
usedNamespaces.Add(Cci.UsedNamespaceOrType.CreateCSharpTypeAlias(targetString, alias));
}
}
}
namespaceScopes.Add(new Cci.NamespaceScope(usedNamespaces.ToImmutableAndFree()));
}
return(namespaceScopes.ToImmutableAndFree()); //NOTE: inner-to-outer order matches dev10
}
public NamespaceOrTypeAndUsingDirective(NamespaceOrTypeSymbol namespaceOrType, UsingDirectiveSyntax usingDirective)
{
this.NamespaceOrType = namespaceOrType;
this.UsingDirective = usingDirective;
}
internal override IEnumerable<MemberBuilder> NonContainerBuilders(NamespaceOrTypeSymbol current)
{
return ConsList<MemberBuilder>.Empty;
}
internal abstract IEnumerable<MemberBuilder> NonContainerBuilders(NamespaceOrTypeSymbol current);
private ImmutableArray <Symbol> BindNameMemberCref(NameMemberCrefSyntax syntax, NamespaceOrTypeSymbol containerOpt, out Symbol ambiguityWinner, DiagnosticBag diagnostics)
{
SimpleNameSyntax nameSyntax = syntax.Name as SimpleNameSyntax;
int arity;
string memberName;
if (nameSyntax != null)
{
arity = nameSyntax.Arity;
memberName = nameSyntax.Identifier.ValueText;
}
else
{
// If the name isn't a SimpleNameSyntax, then we must have a type name followed by a parameter list.
// Thus, we're looking for a constructor.
Debug.Assert((object)containerOpt == null);
// Could be an error type, but we'll just lookup fail below.
containerOpt = BindNamespaceOrTypeSymbolInCref(syntax.Name);
arity = 0;
memberName = WellKnownMemberNames.InstanceConstructorName;
}
if (string.IsNullOrEmpty(memberName))
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
ImmutableArray <Symbol> sortedSymbols = ComputeSortedCrefMembers(syntax, containerOpt, memberName, arity, syntax.Parameters != null, diagnostics);
if (sortedSymbols.IsEmpty)
{
ambiguityWinner = null;
return(ImmutableArray <Symbol> .Empty);
}
return(ProcessCrefMemberLookupResults(
sortedSymbols,
arity,
syntax,
typeArgumentListSyntax: arity == 0 ? null : ((GenericNameSyntax)nameSyntax).TypeArgumentList,
parameterListSyntax: syntax.Parameters,
ambiguityWinner: out ambiguityWinner,
diagnostics: diagnostics));
}
/// <summary>
/// Look for a type forwarder for the given type in any referenced assemblies, checking any using namespaces in
/// the current imports.
/// </summary>
/// <param name="name">The metadata name of the (potentially) forwarded type, without qualifiers.</param>
/// <param name="qualifierOpt">Will be used to return the namespace of the found forwarder,
/// if any.</param>
/// <param name="diagnostics">Will be used to report non-fatal errors during look up.</param>
/// <param name="location">Location to report errors on.</param>
/// <returns>Returns the Assembly to which the type is forwarded, or null if none is found.</returns>
/// <remarks>
/// Since this method is intended to be used for error reporting, it stops as soon as it finds
/// any type forwarder (or an error to report). It does not check other assemblies for consistency or better results.
/// </remarks>
protected override AssemblySymbol GetForwardedToAssemblyInUsingNamespaces(string name, ref NamespaceOrTypeSymbol qualifierOpt, DiagnosticBag diagnostics, Location location)
{
var imports = GetImports(basesBeingResolved: null);
foreach (var typeOrNamespace in imports.Usings)
{
var fullName = typeOrNamespace.NamespaceOrType + "." + name;
var result = GetForwardedToAssembly(fullName, diagnostics, location);
if (result != null)
{
qualifierOpt = typeOrNamespace.NamespaceOrType;
return(result);
}
}
return(base.GetForwardedToAssemblyInUsingNamespaces(name, ref qualifierOpt, diagnostics, location));
}
/// <summary> /// the member binders returned from TypeOrNamespaceMemberBinderContexts and /// NonContainerMemberBinderContexts are first grouped (be Equals/HashCode) /// </summary> /// <returns></returns> internal abstract IEnumerable<NamespaceOrTypeBuilder> TypeOrNamespaceBuilders(NamespaceOrTypeSymbol current);