private static Task <Document> RefactorAsync(
Document document,
EnumDeclarationSyntax enumDeclaration,
INamedTypeSymbol enumSymbol,
ulong?value,
CancellationToken cancellationToken)
{
EqualsValueClauseSyntax equalsValue = null;
if (value != null)
{
equalsValue = EqualsValueClause(CSharpFactory.NumericLiteralExpression(value.Value, enumSymbol.EnumUnderlyingType.SpecialType));
}
string name = NameGenerator.Default.EnsureUniqueMemberName(DefaultNames.EnumMember, enumSymbol);
SyntaxToken identifier = Identifier(name).WithRenameAnnotation();
EnumMemberDeclarationSyntax newEnumMember = EnumMemberDeclaration(
default(SyntaxList <AttributeListSyntax>),
identifier,
equalsValue);
EnumDeclarationSyntax newNode = enumDeclaration.AddMembers(newEnumMember);
return(document.ReplaceNodeAsync(enumDeclaration, newNode, cancellationToken));
}
private static async Task <Document> RefactorAsync(
Document document,
EnumDeclarationSyntax enumDeclaration,
INamedTypeSymbol enumSymbol,
ImmutableArray <ulong> values,
bool startFromHighestExistingValue,
CancellationToken cancellationToken)
{
SeparatedSyntaxList <EnumMemberDeclarationSyntax> members = enumDeclaration.Members;
List <ulong> valuesList = values.ToList();
for (int i = 0; i < members.Count; i++)
{
if (members[i].EqualsValue == null)
{
Optional <ulong> optional = FlagsUtility <ulong> .Instance.GetUniquePowerOfTwo(valuesList, startFromHighestExistingValue);
if (optional.HasValue &&
ConvertHelpers.CanConvertFromUInt64(optional.Value, enumSymbol.EnumUnderlyingType.SpecialType))
{
valuesList.Add(optional.Value);
EqualsValueClauseSyntax equalsValue = EqualsValueClause(
Token(TriviaList(ElasticSpace), SyntaxKind.EqualsToken, TriviaList(ElasticSpace)),
CSharpFactory.NumericLiteralExpression(optional.Value, enumSymbol.EnumUnderlyingType.SpecialType));
EnumMemberDeclarationSyntax newMember = members[i].WithEqualsValue(equalsValue);
members = members.ReplaceAt(i, newMember);
}
else
{
break;
}
}
}
EnumDeclarationSyntax newNode = enumDeclaration.WithMembers(members);
return(await document.ReplaceNodeAsync(enumDeclaration, newNode, cancellationToken).ConfigureAwait(false));
}