public static async Task <Document> RefactorAsync(
Document document,
EnumMemberDeclarationSyntax enumMemberDeclaration,
CancellationToken cancellationToken)
{
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
IFieldSymbol enumMemberSymbol = semanticModel.GetDeclaredSymbol(enumMemberDeclaration, cancellationToken);
ImmutableArray <EnumFieldInfo> infos = EnumFieldInfo.CreateRange(enumMemberSymbol.ContainingType);
ExpressionSyntax value = enumMemberDeclaration.EqualsValue?.Value;
var info = new EnumFieldInfo(enumMemberSymbol);
List <EnumFieldInfo> values = info.Decompose(infos);
values.Sort((f, g) =>
{
if (f.IsComposite())
{
if (g.IsComposite())
{
return(((IComparable)f.Value).CompareTo((IComparable)g.Value));
}
else
{
return(-1);
}
}
else if (g.IsComposite())
{
return(1);
}
return(((IComparable)f.Value).CompareTo((IComparable)g.Value));
});
BinaryExpressionSyntax newValue = CSharpFactory.BitwiseOrExpression(values[0].ToIdentifierName(), values[1].ToIdentifierName());
for (int i = 2; i < values.Count; i++)
{
newValue = CSharpFactory.BitwiseOrExpression(newValue, values[i].ToIdentifierName());
}
newValue = newValue.WithFormatterAnnotation();
return(await document.ReplaceNodeAsync(value, newValue, cancellationToken).ConfigureAwait(false));
}