private static SyntaxNode MakeSingleFieldReadonly(SyntaxNode root, FieldDeclarationSyntax fieldDeclaration)
{
var newFieldDeclaration = fieldDeclaration.AddModifiers(SyntaxFactory.Token(SyntaxKind.ReadOnlyKeyword))
.WithTrailingTrivia(fieldDeclaration.GetTrailingTrivia())
.WithLeadingTrivia(fieldDeclaration.GetLeadingTrivia())
.WithAdditionalAnnotations(Formatter.Annotation);
var newRoot = root.ReplaceNode(fieldDeclaration, newFieldDeclaration);
return newRoot;
}
private async Task<Document> MakeReadOnlyAsync(Document document, FieldDeclarationSyntax fieldDecl, CancellationToken cancellationToken)
{
var roKeyword = SyntaxFactory.Token(SyntaxKind.ReadOnlyKeyword);
var roFieldDecl = fieldDecl.AddModifiers(roKeyword);
var root = await document.GetSyntaxRootAsync(cancellationToken);
var newRoot = root.ReplaceNode(fieldDecl, roFieldDecl);
var newDocument = document.WithSyntaxRoot(newRoot);
return newDocument;
}