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//
// OverrideMethodsGenerator.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.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 Gtk;
using System.Collections.Generic;
using MonoDevelop.Core;
using MonoDevelop.Refactoring;
using MonoDevelop.Ide.TypeSystem;
using ICSharpCode.NRefactory6.CSharp;
using System.Linq;
using System.Threading;
using Microsoft.CodeAnalysis;
using MonoDevelop.CSharp.Refactoring;
namespace MonoDevelop.CodeGeneration
{
class OverrideMembersGenerator : ICodeGenerator
{
public string Icon {
get {
return "md-method";
}
}
public string Text {
get {
return GettextCatalog.GetString ("Override members");
}
}
public string GenerateDescription {
get {
return GettextCatalog.GetString ("Select members to be overridden.");
}
}
public bool IsValid (CodeGenerationOptions options)
{
return new OverrideMethods (options).IsValid ();
}
public IGenerateAction InitalizeSelection (CodeGenerationOptions options, Gtk.TreeView treeView)
{
OverrideMethods overrideMethods = new OverrideMethods (options);
overrideMethods.Initialize (treeView);
return overrideMethods;
}
class OverrideMethods : AbstractGenerateAction
{
public OverrideMethods (CodeGenerationOptions options) : base (options)
{
}
protected override IEnumerable<object> GetValidMembers ()
{
var encType = Options.EnclosingType as INamedTypeSymbol;
if (encType == null || Options.EnclosingMember != null)
return Enumerable.Empty<object> ();
var result = new HashSet<ISymbol> ();
var cancellationToken = default(CancellationToken);
var baseTypes = encType.GetBaseTypes ().Reverse ();
foreach (var type in baseTypes) {
RemoveOverriddenMembers (result, type, cancellationToken);
AddOverridableMembers (result, encType, type, cancellationToken);
}
RemoveOverriddenMembers (result, encType, cancellationToken);
return result;
}
static void AddOverridableMembers (HashSet<ISymbol> result, INamedTypeSymbol containingType, INamedTypeSymbol type, CancellationToken cancellationToken)
{
foreach (var member in type.GetMembers()) {
if (IsOverridable (member, containingType)) {
result.Add (member);
}
}
}
protected static void RemoveOverriddenMembers (HashSet<ISymbol> result, INamedTypeSymbol containingType, CancellationToken cancellationToken)
{
foreach (var member in containingType.GetMembers()) {
var overriddenMember = member.OverriddenMember ();
if (overriddenMember != null) {
result.Remove (overriddenMember);
}
}
}
public static bool IsOverridable (ISymbol member, INamedTypeSymbol containingType)
{
if (member.IsAbstract || member.IsVirtual || member.IsOverride) {
if (member.IsSealed) {
return false;
}
if (!member.IsAccessibleWithin (containingType)) {
return false;
}
switch (member.Kind) {
case SymbolKind.Event:
return true;
case SymbolKind.Method:
return ((IMethodSymbol)member).MethodKind == MethodKind.Ordinary;
case SymbolKind.Property:
return !((IPropertySymbol)member).IsWithEvents;
}
}
return false;
}
protected override IEnumerable<string> GenerateCode (List<object> includedMembers)
{
var currentType = Options.EnclosingType as INamedTypeSymbol;
foreach (ISymbol member in includedMembers) {
yield return CSharpCodeGenerator.CreateOverridenMemberImplementation (Options.DocumentContext, Options.Editor, currentType, currentType.Locations.First (), member, false).Code;
}
}
}
}
}
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