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// GenerateSwitchLabels.cs
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// Mike Krüger <mkrueger@novell.com>
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// Copyright (c) 2011 Mike Krüger <mkrueger@novell.com>
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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using ICSharpCode.NRefactory.TypeSystem;
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using System.Threading;
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using System.Collections.Generic;
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
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[ContextAction("Generate switch labels", Description = "Creates switch lables for enumerations.")]
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public class GenerateSwitchLabelsAction : ICodeActionProvider
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public IEnumerable<CodeAction> GetActions(RefactoringContext context)
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var switchStatement = GetSwitchStatement(context);
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if (switchStatement == null) {
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var result = context.Resolve(switchStatement.Expression);
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if (result.Type.Kind != TypeKind.Enum) {
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yield return new CodeAction (context.TranslateString("Create switch labels"), script => {
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var type = result.Type;
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var newSwitch = (SwitchStatement)switchStatement.Clone();
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var target = new TypeReferenceExpression (context.CreateShortType(result.Type));
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foreach (var field in type.GetFields ()) {
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if (field.IsSynthetic || !field.IsConst) {
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newSwitch.SwitchSections.Add(new SwitchSection () {
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new CaseLabel (new MemberReferenceExpression (target.Clone(), field.Name))
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newSwitch.SwitchSections.Add(new SwitchSection () {
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new ThrowStatement (new ObjectCreateExpression (context.CreateShortType("System", "ArgumentOutOfRangeException")))
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script.Replace(switchStatement, newSwitch);
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static SwitchStatement GetSwitchStatement (RefactoringContext context)
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var switchStatment = context.GetNode<SwitchStatement> ();
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if (switchStatment != null && switchStatment.SwitchSections.Count == 0)
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return switchStatment;