public IEnumerable <CodeAction> GetActions(RefactoringContext context)
{
var property = context.GetNode <PropertyDeclaration>();
var field = RemoveBackingStoreAction.GetBackingField(context);
if (field == null)
{
yield break;
}
var resolvedType = ReflectionHelper.ParseReflectionName("System.EventHandler").Resolve(context.Compilation);
if (resolvedType == null)
{
yield break;
}
var type = (TypeDeclaration)property.Parent;
yield return(new CodeAction(context.TranslateString("Create changed event"), script => {
var eventDeclaration = CreateChangedEventDeclaration(context, property);
var methodDeclaration = CreateEventInvocatorAction.CreateEventInvocator(context, type, eventDeclaration, eventDeclaration.Variables.First(), resolvedType.GetDelegateInvokeMethod(), false);
var stmt = new ExpressionStatement(new InvocationExpression(
new IdentifierExpression(methodDeclaration.Name),
new MemberReferenceExpression(new TypeReferenceExpression(context.CreateShortType("System", "EventArgs")), "Empty")
));
var task = script.InsertWithCursor(
context.TranslateString("Create event invocator"),
Script.InsertPosition.After,
new AstNode[] { eventDeclaration, methodDeclaration }
);
Action <Task> insertInvocation = delegate {
script.InsertBefore(property.Setter.Body.RBraceToken, stmt);
script.FormatText(stmt);
};
if (task.IsCompleted)
{
insertInvocation(null);
}
else
{
task.ContinueWith(insertInvocation, TaskScheduler.FromCurrentSynchronizationContext());
}
}, property.NameToken));
}
static Statement BuildAccessorStatement(RefactoringContext context, PropertyDeclaration pdecl)
{
if (pdecl.Setter.IsNull && !pdecl.Getter.IsNull)
{
var field = RemoveBackingStoreAction.ScanGetter(context, pdecl);
if (field != null)
{
return(new ExpressionStatement(new AssignmentExpression(new IdentifierExpression(field.Name), AssignmentOperatorType.Assign, new IdentifierExpression("value"))));
}
}
if (!pdecl.Setter.IsNull && pdecl.Getter.IsNull)
{
var field = RemoveBackingStoreAction.ScanSetter(context, pdecl);
if (field != null)
{
return(new ReturnStatement(new IdentifierExpression(field.Name)));
}
}
return(new ThrowStatement(new ObjectCreateExpression(context.CreateShortType("System", "NotImplementedException"))));
}