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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;
using ICSharpCode.NRefactory.CSharp.Resolver;
using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.TypeSystem;
namespace ICSharpCode.NRefactory.CSharp.TypeSystem
{
/// <summary>
/// Represents a reference which could point to a type or namespace.
/// </summary>
[Serializable]
public abstract class TypeOrNamespaceReference : ITypeReference
{
/// <summary>
/// Resolves the reference and returns the ResolveResult.
/// </summary>
public abstract ResolveResult Resolve(CSharpResolver resolver);
/// <summary>
/// Returns the type that is referenced; or an <c>UnknownType</c> if the type isn't found.
/// </summary>
public abstract IType ResolveType(CSharpResolver resolver);
/// <summary>
/// Returns the namespace that is referenced; or null if no such namespace is found.
/// </summary>
public INamespace ResolveNamespace(CSharpResolver resolver)
{
NamespaceResolveResult nrr = Resolve(resolver) as NamespaceResolveResult;
return nrr != null ? nrr.Namespace : null;
}
IType ITypeReference.Resolve(ITypeResolveContext context)
{
// Strictly speaking, we might have to resolve the type in a nested compilation, similar
// to what we're doing with ConstantExpression.
// However, in almost all cases this will work correctly - if the resulting type is only available in the
// nested compilation and not in this, we wouldn't be able to map it anyways.
var ctx = context as CSharpTypeResolveContext;
if (ctx == null) {
ctx = new CSharpTypeResolveContext(context.CurrentAssembly ?? context.Compilation.MainAssembly, null, context.CurrentTypeDefinition, context.CurrentMember);
}
return ResolveType(new CSharpResolver(ctx));
// A potential issue might be this scenario:
// Assembly 1:
// class A { public class Nested {} }
// Assembly 2: (references asm 1)
// class B : A {}
// Assembly 3: (references asm 1 and 2)
// class C { public B.Nested Field; }
// Assembly 4: (references asm 1 and 3, but not 2):
// uses C.Field;
// Here we would not be able to resolve 'B.Nested' in the compilation of assembly 4, as type B is missing there.
}
}
}
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