/// <summary>
/// Return all possible equivalent, subset, and known compatible frameworks.
/// </summary>
public IEnumerable <NuGetFramework> Expand(NuGetFramework framework)
{
var seen = new HashSet <NuGetFramework>()
{
framework
};
var toExpand = new Stack <NuGetFramework>();
toExpand.Push(framework);
while (toExpand.Count > 0)
{
foreach (var expansion in ExpandInternal(toExpand.Pop()))
{
// only return distinct frameworks
if (seen.Add(expansion))
{
yield return(expansion);
toExpand.Push(expansion);
}
}
}
// This PCL check is done outside of the loop because we do not want
// to recurse (via the stack above) on this PCL equivalence. The
// intent here is to ensure that PCL should expand to netstandard,
// but NOT to dotnet (which is deprecated).
if (framework.IsPCL)
{
int profileNumber;
IEnumerable <FrameworkRange> ranges;
if (_mappings.TryGetPortableProfileNumber(framework.Profile, out profileNumber) &&
_mappings.TryGetPortableCompatibilityMappings(profileNumber, out ranges))
{
foreach (var range in ranges)
{
yield return(range.Min);
if (!range.Min.Equals(range.Max))
{
yield return(range.Max);
}
}
}
}
}
