public static async Task <Document> RefactorAsync(
Document document,
LocalDeclarationStatementSyntax localDeclaration,
CancellationToken cancellationToken)
{
TypeSyntax type = localDeclaration.Declaration.Type;
LocalDeclarationStatementSyntax newNode = localDeclaration;
if (type.IsVar)
{
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(type, cancellationToken);
TypeSyntax newType = typeSymbol.ToMinimalTypeSyntax(semanticModel, localDeclaration.SpanStart);
newNode = newNode.ReplaceNode(type, newType.WithTriviaFrom(type));
}
Debug.Assert(!newNode.Modifiers.Any(), newNode.Modifiers.ToString());
if (newNode.Modifiers.Any())
{
newNode = newNode.InsertModifier(SyntaxKind.ConstKeyword);
}
else
{
newNode = newNode
.WithoutLeadingTrivia()
.WithModifiers(TokenList(Token(SyntaxKind.ConstKeyword).WithLeadingTrivia(newNode.GetLeadingTrivia())));
}
return(await document.ReplaceNodeAsync(localDeclaration, newNode, cancellationToken).ConfigureAwait(false));
}