source: branches/CodeEditor/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/TypeSystem/Implementation/ExplicitInterfaceImplementationMemberReference.cs @ 11700

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using System;
using System.Collections.Generic;
using System.Linq;

namespace ICSharpCode.NRefactory.TypeSystem.Implementation
{
  /// <summary>
  /// References a member that is an explicit interface implementation.
  /// </summary>
  /// <remarks>
  /// Resolving an ExplicitInterfaceImplementationMemberReference requires a context
  /// that provides enough information for resolving the declaring type reference
  /// and the interface member reference.
  /// Note that the interface member reference is resolved in '<c>context.WithCurrentTypeDefinition(declaringType.GetDefinition())</c>'
  /// - this is done to ensure that open generics in the interface member reference resolve to the type parameters of the
  /// declaring type.
  /// </remarks>
  [Serializable]
  public sealed class ExplicitInterfaceImplementationMemberReference : IMemberReference
  {
    ITypeReference typeReference;
    IMemberReference interfaceMemberReference;
    
    public ExplicitInterfaceImplementationMemberReference(ITypeReference typeReference, IMemberReference interfaceMemberReference)
    {
      if (typeReference == null)
        throw new ArgumentNullException("typeReference");
      if (interfaceMemberReference == null)
        throw new ArgumentNullException("interfaceMemberReference");
      this.typeReference = typeReference;
      this.interfaceMemberReference = interfaceMemberReference;
    }
    
    public ITypeReference DeclaringTypeReference {
      get { return typeReference; }
    }
    
    public IMember Resolve(ITypeResolveContext context)
    {
      IType declaringType = typeReference.Resolve(context);
      IMember interfaceMember = interfaceMemberReference.Resolve(context.WithCurrentTypeDefinition(declaringType.GetDefinition()));
      if (interfaceMember == null)
        return null;
      IEnumerable<IMember> members;
      if (interfaceMember.SymbolKind == SymbolKind.Accessor) {
        members = declaringType.GetAccessors(
          m => m.IsExplicitInterfaceImplementation,
          GetMemberOptions.IgnoreInheritedMembers);
      } else {
        members = declaringType.GetMembers(
          m => m.SymbolKind == interfaceMember.SymbolKind && m.IsExplicitInterfaceImplementation,
          GetMemberOptions.IgnoreInheritedMembers);
      }
      return members.FirstOrDefault(m => m.ImplementedInterfaceMembers.Count == 1 && interfaceMember.Equals(m.ImplementedInterfaceMembers[0]));
    }
    
    ISymbol ISymbolReference.Resolve(ITypeResolveContext context)
    {
      return Resolve(context);
    }
  }
}