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//
// ImplementAbstractMembersAction.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin Inc. (http://xamarin.com)
//
// 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.TypeSystem;
using System.Threading;
using System.Collections.Generic;
using System.Linq;
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
[ContextAction("Implement abstract members", Description = "Implements abstract members from an abstract class.")]
public class ImplementAbstractMembersAction : ICodeActionProvider
{
public IEnumerable<CodeAction> GetActions(RefactoringContext context)
{
var type = context.GetNode<AstType>();
if (type == null || type.Role != Roles.BaseType)
yield break;
var state = context.GetResolverStateBefore(type);
if (state.CurrentTypeDefinition == null)
yield break;
var resolveResult = context.Resolve(type);
if (resolveResult.Type.Kind != TypeKind.Class || resolveResult.Type.GetDefinition() == null || !resolveResult.Type.GetDefinition().IsAbstract)
yield break;
var toImplement = CollectMembersToImplement(state.CurrentTypeDefinition, resolveResult.Type);
if (toImplement.Count == 0)
yield break;
yield return new CodeAction(context.TranslateString("Implement abstract members"), script => {
script.InsertWithCursor(
context.TranslateString("Implement abstract members"),
state.CurrentTypeDefinition,
ImplementInterfaceAction.GenerateImplementation (context, toImplement.Select (m => Tuple.Create (m, false))).Select (entity => {
var decl = entity as EntityDeclaration;
if (decl != null)
decl.Modifiers |= Modifiers.Override;
return entity;
})
);
}, type);
}
public static List<IMember> CollectMembersToImplement(ITypeDefinition implementingType, IType abstractType)
{
// var def = abstractType.GetDefinition();
var toImplement = new List<IMember>();
bool alreadyImplemented;
// Stub out non-implemented events defined by @iface
foreach (var ev in abstractType.GetEvents (e => !e.IsSynthetic && e.IsAbstract)) {
alreadyImplemented = implementingType.GetAllBaseTypeDefinitions().Any(
x => x.Kind != TypeKind.Interface && x.Events.Any (y => y.Name == ev.Name)
);
if (!alreadyImplemented)
toImplement.Add(ev);
}
// Stub out non-implemented methods defined by @iface
foreach (var method in abstractType.GetMethods (d => !d.IsSynthetic && d.IsAbstract)) {
alreadyImplemented = false;
var allBaseTypes = method.DeclaringType.GetAllBaseTypes().ToList ();
foreach (var cmet in implementingType.GetMethods (d => !d.IsAbstract && d.Name == method.Name)) {
if (allBaseTypes.Contains(cmet.DeclaringType))
continue;
if (ImplementInterfaceAction.CompareMethods(method, cmet)) {
alreadyImplemented = true;
break;
}
}
if (!alreadyImplemented)
toImplement.Add(method);
}
// Stub out non-implemented properties defined by @iface
foreach (var prop in abstractType.GetProperties (p => !p.IsSynthetic && p.IsAbstract)) {
alreadyImplemented = false;
foreach (var t in implementingType.GetAllBaseTypeDefinitions ()) {
if (t.Kind == TypeKind.Interface)
continue;
foreach (IProperty cprop in t.Properties) {
if (!cprop.IsAbstract && cprop.Name == prop.Name) {
alreadyImplemented = true;
}
}
}
if (!alreadyImplemented)
toImplement.Add(prop);
}
return toImplement;
}
}
}
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