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// membercache.cs: A container for all member lookups
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// Author: Miguel de Icaza (miguel@gnu.org)
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// Marek Safar (marek.safar@gmail.com)
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// Dual licensed under the terms of the MIT X11 or GNU GPL
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// Copyright 2001 Ximian, Inc (http://www.ximian.com)
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// Copyright 2004-2010 Novell, Inc
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using System.Collections.Generic;
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namespace Mono.CSharp {
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public enum MemberKind
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TypeParameter = 1 << 16,
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PointerType = 1 << 20,
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InternalCompilerType = 1 << 21,
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MissingType = 1 << 22,
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NestedMask = Class | Struct | Delegate | Enum | Interface,
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GenericMask = Method | Class | Struct | Delegate | Interface,
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MaskType = Constructor | Event | Field | Method | Property | Indexer | Operator | Destructor | NestedMask
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public enum BindingRestriction
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// Inspect only queried type members
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DeclaredOnly = 1 << 1,
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InstanceOnly = 1 << 2,
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// Member has to be override
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public struct MemberFilter : IEquatable<MemberSpec>
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public readonly string Name;
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public readonly MemberKind Kind;
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public readonly AParametersCollection Parameters;
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public readonly TypeSpec MemberType;
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public readonly int Arity; // -1 to ignore the check
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private MemberFilter (string name, MemberKind kind)
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public MemberFilter (MethodSpec m)
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Kind = MemberKind.Method;
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Parameters = m.Parameters;
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MemberType = m.ReturnType;
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public MemberFilter (string name, int arity, MemberKind kind, AParametersCollection param, TypeSpec type)
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public static MemberFilter Constructor (AParametersCollection param)
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return new MemberFilter (Mono.CSharp.Constructor.ConstructorName, 0, MemberKind.Constructor, param, null);
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public static MemberFilter Property (string name, TypeSpec type)
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return new MemberFilter (name, 0, MemberKind.Property, null, type);
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public static MemberFilter Field (string name, TypeSpec type)
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return new MemberFilter (name, 0, MemberKind.Field, null, type);
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public static MemberFilter Method (string name, int arity, AParametersCollection param, TypeSpec type)
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return new MemberFilter (name, arity, MemberKind.Method, param, type);
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#region IEquatable<MemberSpec> Members
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public bool Equals (MemberSpec other)
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// Is the member of the correct type ?
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// TODO: Isn't this redundant ?
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if ((other.Kind & Kind & MemberKind.MaskType) == 0)
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// Check arity when not disabled
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if (Arity >= 0 && Arity != other.Arity)
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if (Parameters != null) {
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if (other is IParametersMember) {
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var other_param = ((IParametersMember) other).Parameters;
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if (!TypeSpecComparer.Override.IsEqual (Parameters, other_param))
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if (MemberType != null) {
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if (other is IInterfaceMemberSpec) {
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var other_type = ((IInterfaceMemberSpec) other).MemberType;
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if (!TypeSpecComparer.Override.IsEqual (other_type, MemberType))
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// The MemberCache is the main members container used by compiler. It contains
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// all members imported or defined during compilation using on demand filling
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// process. Inflated containers are also using MemberCache to make inflated
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// members look like normal definition.
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// All of the methods are performance and memory sensitive as the MemberCache
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// is the underlying engine of all member based operations.
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public class MemberCache
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HasConversionOperator = 1 << 1,
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HasUserOperator = 1 << 2
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readonly Dictionary<string, IList<MemberSpec>> member_hash;
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Dictionary<string, MemberSpec[]> locase_members;
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IList<MethodSpec> missing_abstract;
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StateFlags state; // TODO: Move to TypeSpec or ITypeDefinition
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public static readonly string IndexerNameAlias = "<this>";
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public static readonly MemberCache Empty = new MemberCache (0);
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public MemberCache ()
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public MemberCache (int capacity)
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member_hash = new Dictionary<string, IList<MemberSpec>> (capacity);
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public MemberCache (MemberCache cache)
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: this (cache.member_hash.Count)
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this.state = cache.state;
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// Creates a new MemberCache for the given `container'.
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public MemberCache (TypeContainer container)
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: this () // TODO: Optimize the size
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// For cases where we need to union cache members
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public void AddBaseType (TypeSpec baseType)
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var cache = baseType.MemberCache;
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IList<MemberSpec> list;
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foreach (var entry in cache.member_hash) {
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if (!member_hash.TryGetValue (entry.Key, out list)) {
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if (entry.Value.Count == 1) {
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list = new List<MemberSpec> (entry.Value);
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member_hash.Add (entry.Key, list);
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foreach (var ce in entry.Value) {
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if (list.Contains (ce))
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if (list is MemberSpec[]) {
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list = new List<MemberSpec> () { list [0] };
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member_hash[entry.Key] = list;
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// Member-cache does not contain base members but it does
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// contain all base interface members, so the Lookup code
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// can use simple inheritance rules.
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public void AddInterface (TypeSpec iface)
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var cache = iface.MemberCache;
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IList<MemberSpec> list;
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foreach (var entry in cache.member_hash) {
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if (!member_hash.TryGetValue (entry.Key, out list)) {
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if (entry.Value.Count == 1) {
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list = new List<MemberSpec> (entry.Value);
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member_hash.Add (entry.Key, list);
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foreach (var ce in entry.Value) {
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if (list.Contains (ce))
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if (AddInterfaceMember (ce, ref list))
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member_hash[entry.Key] = list;
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// Add also all base interfaces
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if (iface.Interfaces != null) {
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foreach (var base_iface in iface.Interfaces)
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AddInterface (base_iface);
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public void AddMember (InterfaceMemberBase imb, string exlicitName, MemberSpec ms)
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// Explicit names cannot be looked-up but can be used for
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// collision checking (no name mangling needed)
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if (imb.IsExplicitImpl)
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AddMember (exlicitName, ms, false);
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// Add non-explicit member to member cache
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public void AddMember (MemberSpec ms)
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AddMember (GetLookupName (ms), ms, false);
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void AddMember (string name, MemberSpec member, bool removeHiddenMembers)
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if (member.Kind == MemberKind.Operator) {
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var dt = member.DeclaringType;
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switch (dt.BuiltinType) {
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case BuiltinTypeSpec.Type.String:
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case BuiltinTypeSpec.Type.Delegate:
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case BuiltinTypeSpec.Type.MulticastDelegate:
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// Some core types have user operators but they cannot be used as normal
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// user operators as they are predefined and therefore having different
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// rules (e.g. binary operators) by not setting the flag we hide them for
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// TODO: Should I do this for all core types ?
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if (name == Operator.GetMetadataName (Operator.OpType.Implicit) || name == Operator.GetMetadataName (Operator.OpType.Explicit)) {
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state |= StateFlags.HasConversionOperator;
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state |= StateFlags.HasUserOperator;
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IList<MemberSpec> list;
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if (!member_hash.TryGetValue (name, out list)) {
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member_hash.Add (name, new MemberSpec[] { member });
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if (removeHiddenMembers && member.DeclaringType.IsInterface) {
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if (AddInterfaceMember (member, ref list))
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member_hash[name] = list;
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if (list.Count == 1) {
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list = new List<MemberSpec> () { list[0] };
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member_hash[name] = list;
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public void AddMemberImported (MemberSpec ms)
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AddMember (GetLookupName (ms), ms, true);
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// Ignores any base interface member which can be hidden
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static bool AddInterfaceMember (MemberSpec member, ref IList<MemberSpec> existing)
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var member_param = member is IParametersMember ? ((IParametersMember) member).Parameters : ParametersCompiled.EmptyReadOnlyParameters;
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// interface IA : IB { int Prop { set; } }
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// interface IB { bool Prop { get; } }
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// IB.Prop is never accessible from IA interface
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for (int i = 0; i < existing.Count; ++i) {
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var entry = existing[i];
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if (entry.Arity != member.Arity)
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if (entry is IParametersMember) {
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var entry_param = ((IParametersMember) entry).Parameters;
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if (!TypeSpecComparer.Override.IsEqual (entry_param, member_param))
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if (member.DeclaringType.ImplementsInterface (entry.DeclaringType, false)) {
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if (existing.Count == 1) {
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existing = new MemberSpec[] { member };
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existing.RemoveAt (i--);
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if ((entry.DeclaringType == member.DeclaringType && entry.IsAccessor == member.IsAccessor) ||
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entry.DeclaringType.ImplementsInterface (member.DeclaringType, false))
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if (existing.Count == 1) {
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existing = new List<MemberSpec> () { existing[0], member };
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existing.Add (member);
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public static MemberSpec FindMember (TypeSpec container, MemberFilter filter, BindingRestriction restrictions)
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IList<MemberSpec> applicable;
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if (container.MemberCache.member_hash.TryGetValue (filter.Name, out applicable)) {
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// Start from the end because interface members are in reverse order
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for (int i = applicable.Count - 1; i >= 0; i--) {
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var entry = applicable [i];
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if ((restrictions & BindingRestriction.InstanceOnly) != 0 && entry.IsStatic)
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if ((restrictions & BindingRestriction.NoAccessors) != 0 && entry.IsAccessor)
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if ((restrictions & BindingRestriction.OverrideOnly) != 0 && (entry.Modifiers & Modifiers.OVERRIDE) == 0)
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if (!filter.Equals (entry))
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if ((restrictions & BindingRestriction.DeclaredOnly) != 0 && container.IsInterface && entry.DeclaringType != container)
428
if ((restrictions & BindingRestriction.DeclaredOnly) != 0)
431
container = container.BaseType;
432
} while (container != null);
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// A special method to work with member lookup only. It returns a list of all members named @name
439
// starting from @container. It's very performance sensitive
441
public static IList<MemberSpec> FindMembers (TypeSpec container, string name, bool declaredOnly)
443
IList<MemberSpec> applicable;
446
if (container.MemberCache.member_hash.TryGetValue (name, out applicable) || declaredOnly)
449
container = container.BaseType;
450
} while (container != null);
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// Finds the nested type in container
458
public static TypeSpec FindNestedType (TypeSpec container, string name, int arity)
460
IList<MemberSpec> applicable;
461
TypeSpec best_match = null;
463
// TODO: Don't know how to handle this yet
464
// When resolving base type of nested type, parent type must have
465
// base type resolved to scan full hierarchy correctly
466
// Similarly MemberCacheTypes will inflate BaseType and Interfaces
467
// based on type definition
468
var tc = container.MemberDefinition as TypeContainer;
472
if (container.MemberCacheTypes.member_hash.TryGetValue (name, out applicable)) {
473
for (int i = applicable.Count - 1; i >= 0; i--) {
474
var entry = applicable[i];
475
if ((entry.Kind & MemberKind.NestedMask) == 0)
478
var ts = (TypeSpec) entry;
479
if (arity == ts.Arity)
483
if (best_match == null) {
485
} else if (System.Math.Abs (ts.Arity + arity) < System.Math.Abs (ts.Arity + arity)) {
492
container = container.BaseType;
493
} while (container != null);
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// Looks for extension methods with defined name and extension type
501
public List<MethodSpec> FindExtensionMethods (IMemberContext invocationContext, TypeSpec extensionType, string name, int arity)
503
IList<MemberSpec> entries;
504
if (!member_hash.TryGetValue (name, out entries))
507
List<MethodSpec> candidates = null;
508
foreach (var entry in entries) {
509
if (entry.Kind != MemberKind.Method || (arity > 0 && entry.Arity != arity))
512
var ms = (MethodSpec) entry;
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if (!ms.IsExtensionMethod)
516
if (!ms.IsAccessible (invocationContext))
520
// Extension methods cannot be nested hence checking parent is enough
522
if ((ms.DeclaringType.Modifiers & Modifiers.INTERNAL) != 0 && !ms.DeclaringType.MemberDefinition.IsInternalAsPublic (invocationContext.Module.DeclaringAssembly))
525
if (candidates == null)
526
candidates = new List<MethodSpec> ();
534
// Returns base members of @member member if no exact match is found @bestCandidate returns
537
public static MemberSpec FindBaseMember (MemberCore member, out MemberSpec bestCandidate, ref bool overrides)
539
bestCandidate = null;
540
var container = member.Parent.PartialContainer.Definition;
541
if (!container.IsInterface) {
542
container = container.BaseType;
544
// It can happen for a user definition of System.Object
545
if (container == null)
549
string name = GetLookupName (member);
550
var member_param = member is IParametersMember ? ((IParametersMember) member).Parameters : null;
552
var mkind = GetMemberCoreKind (member);
553
bool member_with_accessors = mkind == MemberKind.Indexer || mkind == MemberKind.Property;
555
IList<MemberSpec> applicable;
556
MemberSpec ambig_candidate = null;
559
if (container.MemberCache.member_hash.TryGetValue (name, out applicable)) {
560
for (int i = 0; i < applicable.Count; ++i) {
561
var entry = applicable [i];
563
if ((entry.Modifiers & Modifiers.PRIVATE) != 0)
566
if ((entry.Modifiers & Modifiers.AccessibilityMask) == Modifiers.INTERNAL &&
567
!entry.DeclaringType.MemberDefinition.IsInternalAsPublic (member.Module.DeclaringAssembly))
571
// Isn't the member of same kind ?
573
if ((entry.Kind & ~MemberKind.Destructor & mkind & MemberKind.MaskType) == 0) {
574
// Destructors are ignored as they cannot be overridden by user
575
if ((entry.Kind & MemberKind.Destructor) != 0)
578
// A method with different arity does not hide base member
579
if (mkind != MemberKind.Method && member.MemberName.Arity != entry.Arity)
582
bestCandidate = entry;
587
// Same kind of different arity is valid
589
if (member.MemberName.Arity != entry.Arity) {
593
if ((entry.Kind & mkind & (MemberKind.Method | MemberKind.Indexer)) != 0) {
594
if (entry.IsAccessor != member is AbstractPropertyEventMethod)
597
var pm = entry as IParametersMember;
598
if (!TypeSpecComparer.Override.IsEqual (pm.Parameters, member_param))
603
// Skip override for member with accessors. It may not fully implement the base member
604
// but keep flag we found an implementation in case the base member is abstract
606
if (member_with_accessors && ((entry.Modifiers & (Modifiers.OVERRIDE | Modifiers.SEALED)) == Modifiers.OVERRIDE)) {
608
// Set candidate to override implementation to flag we found an implementation
615
// For members with parameters we can encounter an ambiguous candidates (they match exactly)
616
// because generic type parameters could be inflated into same types
618
if (ambig_candidate == null && (entry.Kind & mkind & (MemberKind.Method | MemberKind.Indexer)) != 0) {
619
bestCandidate = null;
620
ambig_candidate = entry;
624
bestCandidate = ambig_candidate;
629
if (container.IsInterface || ambig_candidate != null)
632
container = container.BaseType;
633
} while (container != null);
635
return ambig_candidate;
639
// Returns inflated version of MemberSpec, it works similarly to
640
// SRE TypeBuilder.GetMethod
642
public static T GetMember<T> (TypeSpec container, T spec) where T : MemberSpec
644
IList<MemberSpec> applicable;
645
if (container.MemberCache.member_hash.TryGetValue (GetLookupName (spec), out applicable)) {
646
for (int i = applicable.Count - 1; i >= 0; i--) {
647
var entry = applicable[i];
648
if (entry.MemberDefinition == spec.MemberDefinition)
653
throw new InternalErrorException ("Missing member `{0}' on inflated type `{1}'",
654
spec.GetSignatureForError (), container.GetSignatureForError ());
657
static MemberKind GetMemberCoreKind (MemberCore member)
659
if (member is FieldBase)
660
return MemberKind.Field;
661
if (member is Indexer)
662
return MemberKind.Indexer;
664
return MemberKind.Class;
665
if (member is Struct)
666
return MemberKind.Struct;
667
if (member is Destructor)
668
return MemberKind.Destructor;
669
if (member is Method)
670
return MemberKind.Method;
671
if (member is Property)
672
return MemberKind.Property;
673
if (member is EventField)
674
return MemberKind.Event;
675
if (member is Interface)
676
return MemberKind.Interface;
677
if (member is EventProperty)
678
return MemberKind.Event;
679
if (member is Delegate)
680
return MemberKind.Delegate;
682
return MemberKind.Enum;
684
throw new NotImplementedException (member.GetType ().ToString ());
687
public static IList<MemberSpec> GetCompletitionMembers (IMemberContext ctx, TypeSpec container, string name)
689
var matches = new List<MemberSpec> ();
690
foreach (var entry in container.MemberCache.member_hash) {
691
foreach (var name_entry in entry.Value) {
692
if (name_entry.IsAccessor)
695
if ((name_entry.Kind & (MemberKind.Constructor | MemberKind.Destructor | MemberKind.Operator)) != 0)
698
if (!name_entry.IsAccessible (ctx))
701
if (name == null || name_entry.Name.StartsWith (name)) {
702
matches.Add (name_entry);
711
// Returns members of @iface only, base members are ignored
713
public static List<MethodSpec> GetInterfaceMethods (TypeSpec iface)
716
// MemberCache flatten interfaces, therefore in cases like this one
718
// interface IA : IB {}
719
// interface IB { void Foo () }
721
// we would return Foo inside IA which is not expected in this case
723
var methods = new List<MethodSpec> ();
724
foreach (var entry in iface.MemberCache.member_hash.Values) {
725
foreach (var name_entry in entry) {
726
if (iface == name_entry.DeclaringType) {
727
if (name_entry.Kind == MemberKind.Method) {
728
methods.Add ((MethodSpec) name_entry);
738
// Returns all not implememted abstract members inside abstract type
739
// NOTE: Returned list is shared and must not be modified
741
public static IList<MethodSpec> GetNotImplementedAbstractMethods (TypeSpec type)
743
if (type.MemberCache.missing_abstract != null)
744
return type.MemberCache.missing_abstract;
746
var abstract_methods = new List<MethodSpec> ();
747
List<TypeSpec> hierarchy = null;
750
// Stage 1: top-to-bottom scan for abstract members
752
var abstract_type = type;
754
foreach (var entry in abstract_type.MemberCache.member_hash) {
755
foreach (var name_entry in entry.Value) {
756
if ((name_entry.Modifiers & Modifiers.ABSTRACT) == 0)
759
if (name_entry.Kind != MemberKind.Method)
762
abstract_methods.Add ((MethodSpec) name_entry);
766
var base_type = abstract_type.BaseType;
767
if (!base_type.IsAbstract)
770
if (hierarchy == null)
771
hierarchy = new List<TypeSpec> ();
773
hierarchy.Add (abstract_type);
774
abstract_type = base_type;
777
int not_implemented_count = abstract_methods.Count;
778
if (not_implemented_count == 0 || hierarchy == null) {
779
type.MemberCache.missing_abstract = abstract_methods;
780
return type.MemberCache.missing_abstract;
784
// Stage 2: Remove already implemented methods
786
foreach (var type_up in hierarchy) {
787
var members = type_up.MemberCache.member_hash;
788
if (members.Count == 0)
791
for (int i = 0; i < abstract_methods.Count; ++i) {
792
var candidate = abstract_methods [i];
793
if (candidate == null)
796
IList<MemberSpec> applicable;
797
if (!members.TryGetValue (candidate.Name, out applicable))
800
var filter = new MemberFilter (candidate);
801
foreach (var item in applicable) {
802
if ((item.Modifiers & (Modifiers.OVERRIDE | Modifiers.VIRTUAL)) == 0)
805
if (filter.Equals (item)) {
806
--not_implemented_count;
807
abstract_methods [i] = null;
814
if (not_implemented_count == abstract_methods.Count) {
815
type.MemberCache.missing_abstract = abstract_methods;
816
return type.MemberCache.missing_abstract;
819
var not_implemented = new MethodSpec[not_implemented_count];
821
foreach (var m in abstract_methods) {
825
not_implemented[counter++] = m;
828
type.MemberCache.missing_abstract = not_implemented;
829
return type.MemberCache.missing_abstract;
832
static string GetLookupName (MemberSpec ms)
834
if (ms.Kind == MemberKind.Indexer)
835
return IndexerNameAlias;
837
if (ms.Kind == MemberKind.Constructor) {
839
return Constructor.TypeConstructorName;
841
return Constructor.ConstructorName;
847
static string GetLookupName (MemberCore mc)
850
return IndexerNameAlias;
852
if (mc is Constructor)
853
return Constructor.ConstructorName;
855
return mc.MemberName.Name;
859
// Returns all operators declared on container and its base types (until declaredOnly is used)
861
public static IList<MemberSpec> GetUserOperator (TypeSpec container, Operator.OpType op, bool declaredOnly)
863
IList<MemberSpec> found = null;
865
IList<MemberSpec> applicable;
867
var mc = container.MemberCache;
869
if (((op == Operator.OpType.Implicit || op == Operator.OpType.Explicit) && (mc.state & StateFlags.HasConversionOperator) != 0) ||
870
(mc.state & StateFlags.HasUserOperator) != 0) {
872
if (mc.member_hash.TryGetValue (Operator.GetMetadataName (op), out applicable)) {
874
for (i = 0; i < applicable.Count; ++i) {
875
if (applicable[i].Kind != MemberKind.Operator) {
881
// Handles very rare case where a method with same name as operator (op_xxxx) exists
882
// and we have to resize the applicable list
884
if (i != applicable.Count) {
885
for (i = 0; i < applicable.Count; ++i) {
886
if (applicable[i].Kind != MemberKind.Operator) {
891
found = new List<MemberSpec> ();
892
found.Add (applicable[i]);
894
var prev = found as List<MemberSpec>;
896
prev = new List<MemberSpec> (found.Count + 1);
897
prev.AddRange (found);
900
prev.Add (applicable[i]);
907
var merged = found as List<MemberSpec>;
908
if (merged == null) {
909
merged = new List<MemberSpec> (found.Count + applicable.Count);
910
merged.AddRange (found);
914
merged.AddRange (applicable);
920
// BaseType call can be expensive
924
container = container.BaseType;
925
} while (container != null);
931
// Inflates all member cache nested types
933
public void InflateTypes (MemberCache inflated_cache, TypeParameterInflator inflator)
935
foreach (var item in member_hash) {
936
IList<MemberSpec> inflated_members = null;
937
for (int i = 0; i < item.Value.Count; ++i ) {
938
var member = item.Value[i];
940
// FIXME: When inflating members refering nested types before they are inflated
944
if ((member.Kind & MemberKind.NestedMask) != 0 &&
945
(member.Modifiers & Modifiers.COMPILER_GENERATED) == 0) {
946
if (inflated_members == null) {
947
inflated_members = new MemberSpec[item.Value.Count];
948
inflated_cache.member_hash.Add (item.Key, inflated_members);
951
inflated_members [i] = member.InflateMember (inflator);
958
// Inflates all open type members, requires InflateTypes to be called before
960
public void InflateMembers (MemberCache cacheToInflate, TypeSpec inflatedType, TypeParameterInflator inflator)
962
var inflated_member_hash = cacheToInflate.member_hash;
963
Dictionary<MemberSpec, MethodSpec> accessor_relation = null;
964
List<MemberSpec> accessor_members = null;
966
// Copy member specific flags when all members were added
967
cacheToInflate.state = state;
969
foreach (var item in member_hash) {
970
var members = item.Value;
971
IList<MemberSpec> inflated_members = null;
972
for (int i = 0; i < members.Count; ++i ) {
973
var member = members[i];
976
// All nested types have been inflated earlier except for
977
// compiler types which are created later and could miss InflateTypes
979
if ((member.Kind & MemberKind.NestedMask) != 0 &&
980
(member.Modifiers & Modifiers.COMPILER_GENERATED) == 0) {
981
if (inflated_members == null)
982
inflated_members = inflated_member_hash[item.Key];
988
// Clone the container first
990
if (inflated_members == null) {
991
inflated_members = new MemberSpec [item.Value.Count];
992
inflated_member_hash.Add (item.Key, inflated_members);
995
var local_inflator = inflator;
997
if (member.DeclaringType != inflatedType) {
999
// Don't inflate top-level non-generic interface members
1000
// merged into generic interface
1002
if (!member.DeclaringType.IsGeneric && !member.DeclaringType.IsNested) {
1003
inflated_members [i] = member;
1008
// Needed when inflating flatten interfaces. It inflates
1009
// container type only, type parameters are already done
1011
// Handles cases like:
1013
// interface I<T> {}
1014
// interface I<U, V> : I<U> {}
1016
// class C: I<int, bool> {}
1018
var inflated_parent = inflator.Inflate (member.DeclaringType);
1019
if (inflated_parent != inflator.TypeInstance)
1020
local_inflator = new TypeParameterInflator (inflator, inflated_parent);
1024
// Inflate every member, its parent is now different
1026
var inflated = member.InflateMember (local_inflator);
1027
inflated_members [i] = inflated;
1029
if (member is PropertySpec || member is EventSpec) {
1030
if (accessor_members == null)
1031
accessor_members = new List<MemberSpec> ();
1033
accessor_members.Add (inflated);
1037
if (member.IsAccessor) {
1038
if (accessor_relation == null)
1039
accessor_relation = new Dictionary<MemberSpec, MethodSpec> ();
1040
accessor_relation.Add (member, (MethodSpec) inflated);
1045
if (accessor_members != null) {
1046
foreach (var member in accessor_members) {
1047
var prop = member as PropertySpec;
1049
if (prop.Get != null)
1050
prop.Get = accessor_relation[prop.Get];
1051
if (prop.Set != null)
1052
prop.Set = accessor_relation[prop.Set];
1057
var ev = (EventSpec) member;
1058
ev.AccessorAdd = accessor_relation[ev.AccessorAdd];
1059
ev.AccessorRemove = accessor_relation[ev.AccessorRemove];
1065
// Removes hidden base members of an interface. For compiled interfaces we cannot
1066
// do name filtering during Add (as we do for import) because we need all base
1067
// names to be valid during type definition.
1068
// Add replaces hidden base member with current one which means any name collision
1069
// (CS0108) of non-first name would be unnoticed because the name was replaced
1070
// with the one from compiled type
1072
public void RemoveHiddenMembers (TypeSpec container)
1074
foreach (var entry in member_hash) {
1075
var values = entry.Value;
1077
int container_members_start_at = 0;
1078
while (values[container_members_start_at].DeclaringType != container && ++container_members_start_at < entry.Value.Count);
1080
if (container_members_start_at == 0 || container_members_start_at == values.Count)
1083
for (int i = 0; i < container_members_start_at; ++i) {
1084
var member = values[i];
1086
if (!container.ImplementsInterface (member.DeclaringType, false))
1089
var member_param = member is IParametersMember ? ((IParametersMember) member).Parameters : ParametersCompiled.EmptyReadOnlyParameters;
1091
for (int ii = container_members_start_at; ii < values.Count; ++ii) {
1092
var container_entry = values[ii];
1094
if (container_entry.Arity != member.Arity)
1097
if (container_entry is IParametersMember) {
1098
if (!TypeSpecComparer.Override.IsEqual (((IParametersMember) container_entry).Parameters, member_param))
1102
values.RemoveAt (i);
1103
--container_members_start_at;
1112
// Checks all appropriate container members for CLS compliance
1114
public void VerifyClsCompliance (TypeSpec container, Report report)
1116
if (locase_members != null)
1119
if (container.BaseType == null) {
1120
locase_members = new Dictionary<string, MemberSpec[]> (member_hash.Count); // StringComparer.OrdinalIgnoreCase);
1122
container.BaseType.MemberCache.VerifyClsCompliance (container.BaseType, report);
1123
locase_members = new Dictionary<string, MemberSpec[]> (container.BaseType.MemberCache.locase_members); //, StringComparer.OrdinalIgnoreCase);
1126
var is_imported_type = container.MemberDefinition.IsImported;
1127
foreach (var entry in container.MemberCache.member_hash) {
1128
for (int i = 0; i < entry.Value.Count; ++i ) {
1129
var name_entry = entry.Value[i];
1130
if ((name_entry.Modifiers & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
1133
if ((name_entry.Modifiers & (Modifiers.OVERRIDE | Modifiers.COMPILER_GENERATED)) != 0)
1136
if ((name_entry.Kind & MemberKind.MaskType) == 0)
1139
if (name_entry.MemberDefinition.CLSAttributeValue == false)
1142
IParametersMember p_a = name_entry as IParametersMember;
1143
if (p_a != null && !name_entry.IsAccessor) {
1144
if (!is_imported_type) {
1145
var p_a_pd = p_a.Parameters;
1146
for (int ii = i + 1; ii < entry.Value.Count; ++ii) {
1147
var checked_entry = entry.Value[ii];
1148
IParametersMember p_b = checked_entry as IParametersMember;
1152
if (p_a_pd.Count != p_b.Parameters.Count)
1155
if (checked_entry.IsAccessor)
1158
var res = ParametersCompiled.IsSameClsSignature (p_a.Parameters, p_b.Parameters);
1160
var last = GetLaterDefinedMember (checked_entry, name_entry);
1161
if (last == checked_entry.MemberDefinition) {
1162
report.SymbolRelatedToPreviousError (name_entry);
1164
report.SymbolRelatedToPreviousError (checked_entry);
1167
if ((res & 1) != 0) {
1168
report.Warning (3006, 1, last.Location,
1169
"Overloaded method `{0}' differing only in ref or out, or in array rank, is not CLS-compliant",
1170
name_entry.GetSignatureForError ());
1173
if ((res & 2) != 0) {
1174
report.Warning (3007, 1, last.Location,
1175
"Overloaded method `{0}' differing only by unnamed array types is not CLS-compliant",
1176
name_entry.GetSignatureForError ());
1183
if (i > 0 || name_entry.Kind == MemberKind.Constructor || name_entry.Kind == MemberKind.Indexer)
1186
var name_entry_locase = name_entry.Name.ToLowerInvariant ();
1189
if (!locase_members.TryGetValue (name_entry_locase, out found)) {
1190
found = new MemberSpec[] { name_entry };
1191
locase_members.Add (name_entry_locase, found);
1193
bool same_names_only = true;
1194
foreach (var f in found) {
1195
if (f.Name == name_entry.Name)
1198
// if (f.IsAccessor && name_entry.IsAccessor)
1201
same_names_only = false;
1202
if (!is_imported_type) {
1203
var last = GetLaterDefinedMember (f, name_entry);
1204
if (last == f.MemberDefinition) {
1205
report.SymbolRelatedToPreviousError (name_entry);
1207
report.SymbolRelatedToPreviousError (f);
1210
report.Warning (3005, 1, last.Location,
1211
"Identifier `{0}' differing only in case is not CLS-compliant", last.GetSignatureForError ());
1215
if (!same_names_only) {
1216
Array.Resize (ref found, found.Length + 1);
1217
found[found.Length - 1] = name_entry;
1218
locase_members[name_entry_locase] = found;
1226
// Local report helper to issue correctly ordered members stored in hashtable
1228
static MemberCore GetLaterDefinedMember (MemberSpec a, MemberSpec b)
1230
var mc_a = a.MemberDefinition as MemberCore;
1231
var mc_b = b.MemberDefinition as MemberCore;
1238
if (mc_a.Location.File != mc_a.Location.File)
1241
return mc_b.Location.Row > mc_a.Location.Row ? mc_b : mc_a;
1244
public bool CheckExistingMembersOverloads (MemberCore member, AParametersCollection parameters)
1246
var name = GetLookupName (member);
1247
var imb = member as InterfaceMemberBase;
1248
if (imb != null && imb.IsExplicitImpl) {
1249
name = imb.GetFullName (name);
1252
return CheckExistingMembersOverloads (member, name, parameters);
1255
public bool CheckExistingMembersOverloads (MemberCore member, string name, AParametersCollection parameters)
1257
IList<MemberSpec> entries;
1258
if (!member_hash.TryGetValue (name, out entries))
1261
var Report = member.Compiler.Report;
1263
int method_param_count = parameters.Count;
1264
for (int i = entries.Count - 1; i >= 0; --i) {
1265
var ce = entries[i];
1266
var pm = ce as IParametersMember;
1267
var pd = pm == null ? ParametersCompiled.EmptyReadOnlyParameters : pm.Parameters;
1268
if (pd.Count != method_param_count)
1271
if (ce.Arity != member.MemberName.Arity)
1274
// Ignore merged interface members
1275
if (member.Parent.PartialContainer != ce.DeclaringType.MemberDefinition)
1278
var p_types = pd.Types;
1279
if (method_param_count > 0) {
1280
int ii = method_param_count - 1;
1281
TypeSpec type_a, type_b;
1283
type_a = parameters.Types [ii];
1284
type_b = p_types [ii];
1286
if ((pd.FixedParameters [ii].ModFlags & Parameter.Modifier.ISBYREF) !=
1287
(parameters.FixedParameters [ii].ModFlags & Parameter.Modifier.ISBYREF))
1290
} while (TypeSpecComparer.Override.IsEqual (type_a, type_b) && ii-- != 0);
1296
// Operators can differ in return type only
1298
if (member is Operator && ce.Kind == MemberKind.Operator && ((MethodSpec) ce).ReturnType != ((Operator) member).ReturnType)
1302
// Report difference in parameter modifiers only
1304
if (pd != null && member is MethodCore) {
1305
ii = method_param_count;
1306
while (ii-- != 0 && parameters.FixedParameters[ii].ModFlags == pd.FixedParameters[ii].ModFlags &&
1307
parameters.ExtensionMethodType == pd.ExtensionMethodType) ;
1310
var mc = ce as MethodSpec;
1311
member.Compiler.Report.SymbolRelatedToPreviousError (ce);
1312
if ((member.ModFlags & Modifiers.PARTIAL) != 0 && (mc.Modifiers & Modifiers.PARTIAL) != 0) {
1313
if (parameters.HasParams || pd.HasParams) {
1314
Report.Error (758, member.Location,
1315
"A partial method declaration and partial method implementation cannot differ on use of `params' modifier");
1317
Report.Error (755, member.Location,
1318
"A partial method declaration and partial method implementation must be both an extension method or neither");
1320
} else if (member is Constructor) {
1321
Report.Error (851, member.Location,
1322
"Overloaded contructor `{0}' cannot differ on use of parameter modifiers only",
1323
member.GetSignatureForError ());
1325
Report.Error (663, member.Location,
1326
"Overloaded method `{0}' cannot differ on use of parameter modifiers only",
1327
member.GetSignatureForError ());
1334
if ((ce.Kind & MemberKind.Method) != 0) {
1335
Method method_a = member as Method;
1336
Method method_b = ce.MemberDefinition as Method;
1337
if (method_a != null && method_b != null && (method_a.ModFlags & method_b.ModFlags & Modifiers.PARTIAL) != 0) {
1338
const Modifiers partial_modifiers = Modifiers.STATIC | Modifiers.UNSAFE;
1339
if (method_a.IsPartialDefinition == method_b.IsPartialImplementation) {
1340
if ((method_a.ModFlags & partial_modifiers) == (method_b.ModFlags & partial_modifiers) ||
1341
method_a.Parent.IsUnsafe && method_b.Parent.IsUnsafe) {
1342
if (method_a.IsPartialImplementation) {
1343
method_a.SetPartialDefinition (method_b);
1344
if (entries.Count == 1)
1345
member_hash.Remove (name);
1347
entries.RemoveAt (i);
1349
method_b.SetPartialDefinition (method_a);
1350
method_a.caching_flags |= MemberCore.Flags.PartialDefinitionExists;
1355
if (method_a.IsStatic != method_b.IsStatic) {
1356
Report.SymbolRelatedToPreviousError (ce);
1357
Report.Error (763, member.Location,
1358
"A partial method declaration and partial method implementation must be both `static' or neither");
1361
Report.SymbolRelatedToPreviousError (ce);
1362
Report.Error (764, member.Location,
1363
"A partial method declaration and partial method implementation must be both `unsafe' or neither");
1367
Report.SymbolRelatedToPreviousError (ce);
1368
if (method_a.IsPartialDefinition) {
1369
Report.Error (756, member.Location, "A partial method `{0}' declaration is already defined",
1370
member.GetSignatureForError ());
1373
Report.Error (757, member.Location, "A partial method `{0}' implementation is already defined",
1374
member.GetSignatureForError ());
1378
Report.SymbolRelatedToPreviousError (ce);
1380
bool is_reserved_a = member is AbstractPropertyEventMethod || member is Operator;
1381
bool is_reserved_b = ((MethodSpec) ce).IsReservedMethod;
1383
if (is_reserved_a || is_reserved_b) {
1384
Report.Error (82, member.Location, "A member `{0}' is already reserved",
1386
ce.GetSignatureForError () :
1387
member.GetSignatureForError ());
1391
Report.SymbolRelatedToPreviousError (ce);
1394
if (member is Operator && ce.Kind == MemberKind.Operator) {
1395
Report.Error (557, member.Location, "Duplicate user-defined conversion in type `{0}'",
1396
member.Parent.GetSignatureForError ());
1400
Report.Error (111, member.Location,
1401
"A member `{0}' is already defined. Rename this member or use different parameter types",
1402
member.GetSignatureForError ());
added
removed
src/addins/CSharpBinding/MonoDevelop.CSharp.Parser/mcs/membercache.cs
