/NRefactory/ICSharpCode.NRefactory.CSharp/Refactoring/ContextAction/InsertAnonymousMethodSignature.cs
http://github.com/icsharpcode/ILSpy · C# · 94 lines · 55 code · 13 blank · 26 comment · 16 complexity · 868f66d16994f58f0f0a2c53b617de09 MD5 · raw file
- //
- // InsertAnonymousMethodSignature.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.Linq;
- using System.Text;
- namespace ICSharpCode.NRefactory.CSharp.Refactoring
- {
- public class InsertAnonymousMethodSignature : IContextAction
- {
- public bool IsValid (RefactoringContext context)
- {
- IType type;
- return GetAnonymousMethodExpression (context, out type) != null;
- }
-
- public void Run (RefactoringContext context)
- {
- IType type;
- var anonymousMethodExpression = GetAnonymousMethodExpression (context, out type);
-
- var delegateMethod = type.GetDelegateInvokeMethod ();
-
- var sb = new StringBuilder ("(");
- for (int k = 0; k < delegateMethod.Parameters.Count; k++) {
- if (k > 0)
- sb.Append (", ");
-
- var paramType = delegateMethod.Parameters [k].Type;
-
- sb.Append (paramType.ToString ());
- sb.Append (" ");
- sb.Append (delegateMethod.Parameters [k].Name);
- }
- sb.Append (")");
-
- using (var script = context.StartScript ()) {
- script.InsertText (context.GetOffset (anonymousMethodExpression.DelegateToken.EndLocation), sb.ToString ());
- }
- }
-
- static AnonymousMethodExpression GetAnonymousMethodExpression (RefactoringContext context, out IType delegateType)
- {
- delegateType = null;
-
- var anonymousMethodExpression = context.GetNode<AnonymousMethodExpression> ();
- if (anonymousMethodExpression == null || !anonymousMethodExpression.DelegateToken.Contains (context.Location.Line, context.Location.Column) || anonymousMethodExpression.HasParameterList)
- return null;
-
- IType resolvedType = null;
- var parent = anonymousMethodExpression.Parent;
- if (parent is AssignmentExpression) {
- resolvedType = context.Resolve (((AssignmentExpression)parent).Left).Type;
- } else if (parent is VariableDeclarationStatement) {
- resolvedType = context.Resolve (((VariableDeclarationStatement)parent).Type).Type;
- } else if (parent is InvocationExpression) {
- // TODO: handle invocations
- }
-
- if (resolvedType == null)
- return null;
- delegateType = resolvedType;
- if (delegateType.Kind != TypeKind.Delegate)
- return null;
-
- return anonymousMethodExpression;
- }
- }
- }