// 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 System.Linq;
using System.Threading;
namespace ICSharpCode.NRefactory.TypeSystem.Implementation
{
///
/// Type Reference used when the fully qualified type name is known.
///
[Serializable]
public sealed class GetClassTypeReference : ITypeReference, ISymbolReference, ISupportsInterning
{
readonly IAssemblyReference assembly;
readonly FullTypeName fullTypeName;
///
/// Creates a new GetClassTypeReference that searches a type definition.
///
/// The full name of the type.
/// A reference to the assembly containing this type.
/// If this parameter is null, the GetClassTypeReference will search in all
/// assemblies belonging to the compilation.
///
public GetClassTypeReference(FullTypeName fullTypeName, IAssemblyReference assembly = null)
{
this.fullTypeName = fullTypeName;
this.assembly = assembly;
}
///
/// Creates a new GetClassTypeReference that searches a top-level type in all assemblies.
///
/// The namespace name containing the type, e.g. "System.Collections.Generic".
/// The name of the type, e.g. "List".
/// The number of type parameters, (e.g. 1 for List<T>).
public GetClassTypeReference(string namespaceName, string name, int typeParameterCount = 0)
{
this.fullTypeName = new TopLevelTypeName(namespaceName, name, typeParameterCount);
}
///
/// Creates a new GetClassTypeReference that searches a top-level type in the specified assembly.
///
/// A reference to the assembly containing this type.
/// If this parameter is null, the GetClassTypeReference will search in all assemblies belonging to the ICompilation.
/// The namespace name containing the type, e.g. "System.Collections.Generic".
/// The name of the type, e.g. "List".
/// The number of type parameters, (e.g. 1 for List<T>).
public GetClassTypeReference(IAssemblyReference assembly, string namespaceName, string name, int typeParameterCount = 0)
{
this.assembly = assembly;
this.fullTypeName = new TopLevelTypeName(namespaceName, name, typeParameterCount);
}
///
/// Gets the assembly reference.
/// This property returns null if the GetClassTypeReference is searching in all assemblies
/// of the compilation.
///
public IAssemblyReference Assembly { get { return assembly; } }
///
/// Gets the full name of the type this reference is searching for.
///
public FullTypeName FullTypeName { get { return fullTypeName; } }
[Obsolete("Use the FullTypeName property instead. GetClassTypeReference now supports nested types, where the Namespace/Name/TPC tripel isn't sufficient for identifying the type.")]
public string Namespace { get { return fullTypeName.TopLevelTypeName.Namespace; } }
[Obsolete("Use the FullTypeName property instead. GetClassTypeReference now supports nested types, where the Namespace/Name/TPC tripel isn't sufficient for identifying the type.")]
public string Name { get { return fullTypeName.Name; } }
[Obsolete("Use the FullTypeName property instead. GetClassTypeReference now supports nested types, where the Namespace/Name/TPC tripel isn't sufficient for identifying the type.")]
public int TypeParameterCount { get { return fullTypeName.TypeParameterCount; } }
IType ResolveInAllAssemblies(ITypeResolveContext context)
{
var compilation = context.Compilation;
foreach (var asm in compilation.Assemblies) {
IType type = asm.GetTypeDefinition(fullTypeName);
if (type != null)
return type;
}
return null;
}
public IType Resolve(ITypeResolveContext context)
{
if (context == null)
throw new ArgumentNullException("context");
IType type = null;
if (assembly == null) {
// No assembly specified: look in all assemblies, but prefer the current assembly
if (context.CurrentAssembly != null) {
type = context.CurrentAssembly.GetTypeDefinition(fullTypeName);
}
if (type == null) {
type = ResolveInAllAssemblies(context);
}
} else {
// Assembly specified: only look in the specified assembly.
// But if that's not loaded in the compilation, allow fall back to other assemblies.
// (the non-loaded assembly might be a facade containing type forwarders -
// for example, when referencing a portable library from a non-portable project)
IAssembly asm = assembly.Resolve(context);
if (asm != null) {
type = asm.GetTypeDefinition(fullTypeName);
} else {
type = ResolveInAllAssemblies(context);
}
}
return type ?? new UnknownType(fullTypeName);
}
ISymbol ISymbolReference.Resolve(ITypeResolveContext context)
{
var type = Resolve(context);
if (type is ITypeDefinition)
return (ISymbol)type;
return null;
}
public override string ToString()
{
return fullTypeName.ToString() + (assembly != null ? ", " + assembly.ToString() : null);
}
int ISupportsInterning.GetHashCodeForInterning()
{
unchecked {
return 33 * assembly.GetHashCode() + fullTypeName.GetHashCode();
}
}
bool ISupportsInterning.EqualsForInterning(ISupportsInterning other)
{
GetClassTypeReference o = other as GetClassTypeReference;
return o != null && assembly == o.assembly && fullTypeName == o.fullTypeName;
}
}
}