private static string CreateName(CodeRefactoringContext context, SyntaxNode root, SyntaxNode blockSyntax, string typeName)
{
string name = typeName + "Const";
name = NameGenerator.GenerateUniqueName(name, root.ChildTokens().Where(t => t.IsKind(SyntaxKind.IdentifierToken)).Select(t => t.ToString()).ToSet(), StringComparer.Ordinal);
var newConstName = NameProposalService.GetNameProposal(name, SyntaxKind.MethodDeclaration, Accessibility.Private, true, context.Document, blockSyntax.SpanStart);
return(newConstName);
}
static PropertyDeclarationSyntax GeneratePropertyDeclaration(FieldDeclarationSyntax field, VariableDeclaratorSyntax initializer)
{
var modifiers = SyntaxFactory.TokenList(SyntaxFactory.Token(SyntaxKind.PublicKeyword));
if (field.Modifiers.Any(m => m.IsKind(SyntaxKind.StaticKeyword)))
{
modifiers = modifiers.Add(SyntaxFactory.Token(SyntaxKind.StaticKeyword));
}
string propertyName = NameProposalService.GetNameProposal(initializer.Identifier.ValueText, SyntaxKind.PropertyDeclaration);
var block = SyntaxFactory.Block(SyntaxFactory.ReturnStatement(SyntaxFactory.IdentifierName(initializer.Identifier)));
return(SyntaxFactory.PropertyDeclaration(field.Declaration.Type, propertyName)
.WithModifiers(modifiers)
.WithAccessorList(
SyntaxFactory.AccessorList(SyntaxFactory.SingletonList(
SyntaxFactory.AccessorDeclaration(SyntaxKind.GetAccessorDeclaration, block)
))
).WithAdditionalAnnotations(Formatter.Annotation));
}
static string GetEventMethodName(string eventName)
{
return(NameProposalService.GetNameProposal("On" + char.ToUpper(eventName[0]) + eventName.Substring(1), SyntaxKind.MethodDeclaration));
}
public override async Task ComputeRefactoringsAsync(CodeRefactoringContext context)
{
var document = context.Document;
if (document.Project.Solution.Workspace.Kind == WorkspaceKind.MiscellaneousFiles)
{
return;
}
var span = context.Span;
if (!span.IsEmpty)
{
return;
}
var cancellationToken = context.CancellationToken;
if (cancellationToken.IsCancellationRequested)
{
return;
}
var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
if (model.IsFromGeneratedCode(cancellationToken))
{
return;
}
var root = await model.SyntaxTree.GetRootAsync(cancellationToken).ConfigureAwait(false);
var token = root.FindToken(span.Start);
var parameter = token.Parent as ParameterSyntax;
if (parameter != null)
{
var ctor = parameter.Parent.Parent as ConstructorDeclarationSyntax;
if (ctor == null)
{
return;
}
context.RegisterRefactoring(
CodeActionFactory.Create(
parameter.Span,
DiagnosticSeverity.Info,
GettextCatalog.GetString("Initialize field from parameter"),
t2 =>
{
var newFieldName = NameProposalService.GetNameProposal(parameter.Identifier.ValueText, SyntaxKind.FieldDeclaration, Accessibility.Private, false, context.Document, ctor.SpanStart);
var newField = SyntaxFactory.FieldDeclaration(
SyntaxFactory.VariableDeclaration(
parameter.Type,
SyntaxFactory.SingletonSeparatedList <VariableDeclaratorSyntax>(SyntaxFactory.VariableDeclarator(newFieldName)))
).WithModifiers(SyntaxFactory.TokenList(SyntaxFactory.Token(SyntaxKind.ReadOnlyKeyword)))
.WithAdditionalAnnotations(Formatter.Annotation);
var assignmentStatement = SyntaxFactory.ExpressionStatement(
SyntaxFactory.AssignmentExpression(
SyntaxKind.SimpleAssignmentExpression,
SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, SyntaxFactory.ThisExpression(), SyntaxFactory.IdentifierName(newFieldName)),
SyntaxFactory.IdentifierName(newFieldName)
)
).WithAdditionalAnnotations(Formatter.Annotation);
var trackedRoot = root.TrackNodes(ctor);
var newRoot = trackedRoot.InsertNodesBefore(trackedRoot.GetCurrentNode(ctor), new List <SyntaxNode>()
{
newField
});
newRoot = newRoot.ReplaceNode(newRoot.GetCurrentNode(ctor), ctor.WithBody(
ctor.Body.WithStatements(SyntaxFactory.List <StatementSyntax>(new[] { assignmentStatement }.Concat(ctor.Body.Statements)))
));
return(Task.FromResult(document.WithSyntaxRoot(newRoot)));
})
);
}
}