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// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
namespace ICSharpCode.NRefactory.TypeSystem.Implementation
{
/// <summary>
/// Type reference used to reference nested types.
/// </summary>
[Serializable]
public sealed class NestedTypeReference : ITypeReference, ISupportsInterning
{
readonly ITypeReference declaringTypeRef;
readonly string name;
readonly int additionalTypeParameterCount;
/// <summary>
/// Creates a new NestedTypeReference.
/// </summary>
/// <param name="declaringTypeRef">Reference to the declaring type.</param>
/// <param name="name">Name of the nested class</param>
/// <param name="additionalTypeParameterCount">Number of type parameters on the inner class (without type parameters on baseTypeRef)</param>
/// <remarks>
/// <paramref name="declaringTypeRef"/> must be exactly the (unbound) declaring type, not a derived type, not a parameterized type.
/// NestedTypeReference thus always resolves to a type definition, never to (partially) parameterized types.
/// </remarks>
public NestedTypeReference(ITypeReference declaringTypeRef, string name, int additionalTypeParameterCount)
{
if (declaringTypeRef == null)
throw new ArgumentNullException("declaringTypeRef");
if (name == null)
throw new ArgumentNullException("name");
this.declaringTypeRef = declaringTypeRef;
this.name = name;
this.additionalTypeParameterCount = additionalTypeParameterCount;
}
public ITypeReference DeclaringTypeReference {
get { return declaringTypeRef; }
}
public string Name {
get { return name; }
}
public int AdditionalTypeParameterCount {
get { return additionalTypeParameterCount; }
}
public IType Resolve(ITypeResolveContext context)
{
ITypeDefinition declaringType = declaringTypeRef.Resolve(context) as ITypeDefinition;
if (declaringType != null) {
int tpc = declaringType.TypeParameterCount;
foreach (IType type in declaringType.NestedTypes) {
if (type.Name == name && type.TypeParameterCount == tpc + additionalTypeParameterCount)
return type;
}
}
return new UnknownType(null, name, additionalTypeParameterCount);
}
public override string ToString()
{
if (additionalTypeParameterCount == 0)
return declaringTypeRef + "+" + name;
else
return declaringTypeRef + "+" + name + "`" + additionalTypeParameterCount;
}
int ISupportsInterning.GetHashCodeForInterning()
{
return declaringTypeRef.GetHashCode() ^ name.GetHashCode() ^ additionalTypeParameterCount;
}
bool ISupportsInterning.EqualsForInterning(ISupportsInterning other)
{
NestedTypeReference o = other as NestedTypeReference;
return o != null && declaringTypeRef == o.declaringTypeRef && name == o.name && additionalTypeParameterCount == o.additionalTypeParameterCount;
}
}
}
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