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// Copyright (c) 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.Collections.Generic;
using System.Diagnostics.Contracts;
namespace ICSharpCode.NRefactory.TypeSystem
{
/// <summary>
/// Represents a reference to a type.
/// Must be resolved before it can be used as type.
/// </summary>
#if WITH_CONTRACTS
[ContractClass(typeof(ITypeReferenceContract))]
#endif
public interface ITypeReference
{
// Keep this interface simple: I decided against having GetMethods/GetEvents etc. here,
// so that the Resolve step is never hidden from the consumer.
// I decided against implementing IFreezable here: IUnresolvedTypeDefinition can be used as ITypeReference,
// but when freezing the reference, one wouldn't expect the definition to freeze.
/// <summary>
/// Resolves this type reference.
/// </summary>
/// <param name="context">
/// Context to use for resolving this type reference.
/// Which kind of context is required depends on the which kind of type reference this is;
/// please consult the documentation of the method that was used to create this type reference,
/// or that of the class implementing this method.
/// </param>
/// <returns>
/// Returns the resolved type.
/// In case of an error, returns <see cref="SpecialType.UnknownType"/>.
/// Never returns null.
/// </returns>
IType Resolve(ITypeResolveContext context);
}
public interface ITypeResolveContext
{
/// <summary>
/// Gets the parent compilation.
/// This property never returns null.
/// </summary>
ICompilation Compilation { get; }
/// <summary>
/// Gets the current assembly.
/// This property may return null if this context does not specify any assembly.
/// </summary>
IAssembly CurrentAssembly { get; }
/// <summary>
/// Gets the current type definition.
/// </summary>
ITypeDefinition CurrentTypeDefinition { get ;}
/// <summary>
/// Gets the current member.
/// </summary>
IMember CurrentMember { get; }
ITypeResolveContext WithCurrentTypeDefinition(ITypeDefinition typeDefinition);
ITypeResolveContext WithCurrentMember(IMember member);
}
#if WITH_CONTRACTS
[ContractClassFor(typeof(ITypeReference))]
abstract class ITypeReferenceContract : ITypeReference
{
IType ITypeReference.Resolve(ITypeResolveContext context)
{
Contract.Requires(context != null);
Contract.Ensures(Contract.Result<IType>() != null);
return null;
}
}
#endif
}
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