private static Task <Document> RefactorAsync(
Document document,
EnumDeclarationSyntax enumDeclaration,
TextSpan span,
CancellationToken cancellationToken)
{
SyntaxTrivia trivia = enumDeclaration.FindTrivia(span.Start);
SyntaxToken token = trivia.Token;
EnumMemberDeclarationSyntax enumMemberDeclaration = token
.GetPreviousToken()
.Parent
.FirstAncestorOrSelf <EnumMemberDeclarationSyntax>();
int enumMemberIndex = enumDeclaration.Members.IndexOf(enumMemberDeclaration);
SyntaxTriviaList trailingTrivia = token.TrailingTrivia;
SyntaxToken newToken = token.WithTrailingTrivia(trailingTrivia.Skip(trailingTrivia.IndexOf(trivia) + 1));
EnumDeclarationSyntax newEnumDeclaration = enumDeclaration.ReplaceToken(token, newToken);
var settings = new DocumentationCommentGeneratorSettings(ImmutableArray.Create(_leadingSlashesRegex.Replace(trivia.ToString(), "")));
EnumMemberDeclarationSyntax newEnumMemberDeclaration = newEnumDeclaration.Members[enumMemberIndex].WithNewSingleLineDocumentationComment(settings);
newEnumDeclaration = newEnumDeclaration.WithMembers(newEnumDeclaration.Members.ReplaceAt(enumMemberIndex, newEnumMemberDeclaration));
return(document.ReplaceNodeAsync(enumDeclaration, newEnumDeclaration, cancellationToken));
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
Diagnostic enumDiag = context.Diagnostics.First();
context.RegisterCodeFix(CodeAction.Create(title, async token =>
{
// файл, в кот произошла диагностика
Document doc = context.Document;
// корневой элемент синтаксического дерева
var root = await doc.GetSyntaxRootAsync(token);
//узел, кот описывает объявление интерфейса
EnumDeclarationSyntax node = root.FindNode(enumDiag.Location.SourceSpan) as EnumDeclarationSyntax;
// получаем имя интерфейса
string enumName = node.Identifier.Text;
char first = enumName[0];
enumName = enumName.Remove(0, 1).Insert(0, char.ToUpper(first).ToString());
// синтаксич дерево неизменяемо
// создаем новый узел через замену, т.к. нет конструктора
EnumDeclarationSyntax newNode = node.ReplaceToken(node.Identifier, SyntaxFactory.Identifier(enumName));
//SyntaxFactory - создает новый идентификатор
var newDoc = doc.WithSyntaxRoot(root.ReplaceNode(node, newNode));
return(newDoc);
}), enumDiag);
}
private static EnumDeclarationSyntax AddLineFeedsToCommas(EnumDeclarationSyntax enumDeclarationSyntax)
{
var none = new SyntaxToken();
var trailingTriviaList = SyntaxTriviaList.Create(SyntaxFactory.ElasticCarriageReturnLineFeed);
Func <EnumDeclarationSyntax, SyntaxToken> next = enumSyntax => enumSyntax.ChildNodesAndTokens()
.Where(nodeOrToken => nodeOrToken.IsToken)
.Select(nodeOrToken => nodeOrToken.AsToken())
.FirstOrDefault(
token =>
token.Value.Equals(",") &&
(!token.HasTrailingTrivia || !token.TrailingTrivia.Any(SyntaxKind.EndOfLineTrivia)));
SyntaxToken current;
while ((current = next(enumDeclarationSyntax)) != none)
{
enumDeclarationSyntax = enumDeclarationSyntax.ReplaceToken(current,
SyntaxFactory.Identifier(SyntaxTriviaList.Empty, ",", trailingTriviaList)
);
}
return(enumDeclarationSyntax);
}
private static EnumDeclarationSyntax AddLineFeedsToCommas(EnumDeclarationSyntax enumDeclarationSyntax)
{
var none = new SyntaxToken();
var trailingTriviaList = SyntaxTriviaList.Create(SyntaxFactory.ElasticCarriageReturnLineFeed);
Func<EnumDeclarationSyntax, SyntaxToken> next = enumSyntax => enumSyntax.ChildNodesAndTokens()
.Where(nodeOrToken => nodeOrToken.IsToken)
.Select(nodeOrToken => nodeOrToken.AsToken())
.FirstOrDefault(
token =>
token.Value.Equals(",") &&
(!token.HasTrailingTrivia || !token.TrailingTrivia.Any(SyntaxKind.EndOfLineTrivia)));
SyntaxToken current;
while ((current = next(enumDeclarationSyntax)) != none)
{
enumDeclarationSyntax = enumDeclarationSyntax.ReplaceToken(current,
SyntaxFactory.Identifier(SyntaxTriviaList.Empty, ",", trailingTriviaList)
);
}
return enumDeclarationSyntax;
}