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//
// GenerateSwitchLabels.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2011 Mike Krüger <mkrueger@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 System;
using ICSharpCode.NRefactory.TypeSystem;
using System.Threading;
using System.Collections.Generic;
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
[ContextAction("Generate switch labels", Description = "Creates switch lables for enumerations.")]
public class GenerateSwitchLabelsAction : ICodeActionProvider
{
public IEnumerable<CodeAction> GetActions(RefactoringContext context)
{
var switchStatement = GetSwitchStatement(context);
if (switchStatement == null) {
yield break;
}
var result = context.Resolve(switchStatement.Expression);
if (result.Type.Kind != TypeKind.Enum) {
yield break;
}
yield return new CodeAction (context.TranslateString("Create switch labels"), script => {
var type = result.Type;
var newSwitch = (SwitchStatement)switchStatement.Clone();
var target = new TypeReferenceExpression (context.CreateShortType(result.Type));
foreach (var field in type.GetFields ()) {
if (field.IsSynthetic || !field.IsConst) {
continue;
}
newSwitch.SwitchSections.Add(new SwitchSection () {
CaseLabels = {
new CaseLabel (new MemberReferenceExpression (target.Clone(), field.Name))
},
Statements = {
new BreakStatement ()
}
});
}
newSwitch.SwitchSections.Add(new SwitchSection () {
CaseLabels = {
new CaseLabel ()
},
Statements = {
new ThrowStatement (new ObjectCreateExpression (context.CreateShortType("System", "ArgumentOutOfRangeException")))
}
});
script.Replace(switchStatement, newSwitch);
}, switchStatement);
}
static SwitchStatement GetSwitchStatement (RefactoringContext context)
{
var switchStatment = context.GetNode<SwitchStatement> ();
if (switchStatment != null && switchStatment.SwitchSections.Count == 0)
return switchStatment;
return null;
}
}
}
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