public static PlatformSet operator |(PlatformSet a, PlatformSet b)
{
if (a == null && b == null)
{
return(null);
}
var result = new PlatformSet();
if (a == null)
{
result.MacOSX.value = b.MacOSX.value;
result.iOS.value = b.iOS.value;
result.WatchOS.value = b.WatchOS.value;
result.TvOS.value = b.TvOS.value;
}
else if (b == null)
{
result.MacOSX.value = a.MacOSX.value;
result.iOS.value = a.iOS.value;
result.WatchOS.value = a.WatchOS.value;
result.TvOS.value = a.TvOS.value;
}
else
{
result.MacOSX.value = a.MacOSX.value | b.MacOSX.value;
result.iOS.value = a.iOS.value | b.iOS.value;
result.WatchOS.value = a.WatchOS.value | b.WatchOS.value;
result.TvOS.value = a.TvOS.value | b.TvOS.value;
}
return(result);
}
static PlatformAvailability MergeNewStyleAvailabilityAttribute(PlatformAvailability availability, AttributeData attr, AvailabilityKind availabilityKind)
{
var platformName = (PlatformName)(byte)attr.ConstructorArguments[0].Value;
var platformSet = new PlatformSet();
Platform platform = platformSet.GetPlatform(platformName);
if (platform == null)
{
throw new ArgumentOutOfRangeException($"Platform name: {platformName}.");
}
if (availability == null)
{
availability = new PlatformAvailability();
}
switch (attr.ConstructorArguments.Length)
{
case 3: //PlatformName platform, PlatformArchitecture architecture, string message
platform.Architecture = (PlatformArchitecture)(byte)attr.ConstructorArguments[1].Value;
break;
case 5: //PlatformName platform, int majorVersion, int minorVersion, PlatformArchitecture architecture, string message
platform.Major = (byte)(int)attr.ConstructorArguments[1].Value;
platform.Minor = (byte)(int)attr.ConstructorArguments[2].Value;
platform.Architecture = (PlatformArchitecture)(byte)attr.ConstructorArguments[3].Value;
availability.Message = (string)attr.ConstructorArguments[4].Value;
break;
case 6: //PlatformName platform, int majorVersion, int minorVersion, int subminorVersion, PlatformArchitecture architecture, string message
platform.Major = (byte)(int)attr.ConstructorArguments[1].Value;
platform.Minor = (byte)(int)attr.ConstructorArguments[2].Value;
platform.Minor = (byte)(int)attr.ConstructorArguments[3].Value;
platform.Architecture = (PlatformArchitecture)(byte)attr.ConstructorArguments[4].Value;
availability.Message = (string)attr.ConstructorArguments[5].Value;
break;
}
switch (availabilityKind)
{
case AvailabilityKind.Introduced:
availability.Introduced |= platformSet;
break;
case AvailabilityKind.Deprecated:
availability.Deprecated |= platformSet;
break;
case AvailabilityKind.Obsoleted:
availability.Obsoleted |= platformSet;
break;
case AvailabilityKind.Unavailable:
availability.Unavailable |= platformSet;
break;
default:
throw new ArgumentOutOfRangeException();
}
return(availability);
}
static string GetFullName(PlatformSet platformSet, PlatformName platformName) => (platformSet != null) ? platformSet.GetFullName(platformName) : throw new ArgumentNullException();
static Boolean IsAttributeOfCurrentPlatform(PlatformSet platformSet, PlatformName platformName) => (platformSet == null) ? false : platformSet.IsSpecifiedFor(platformName);
static PlatformAvailability MergeAvailabilityAttribute(PlatformAvailability availability, AttributeData attr)
{
if (availability == null)
{
availability = new PlatformAvailability();
}
// first read positional arguments as they come first syntatically
int n = Math.Min(attr.ConstructorArguments.Length, 4);
for (int i = 0; i < n; i++)
{
var value = (ulong)attr.ConstructorArguments[i].Value;
if (value == 0)
{
continue;
}
var platform = new PlatformSet(value);
switch (i)
{
case 0:
availability.Introduced |= platform;
break;
case 1:
availability.Deprecated |= platform;
break;
case 2:
availability.Obsoleted |= platform;
break;
case 3:
availability.Unavailable |= platform;
break;
}
}
// (e.g. [Availability (Platform.Mac_10_9, Introduced = Platform.Mac_10_10)]
// makes no sense, but could technically happen, in which case Platform.Mac_10_10
// would be the winner).
foreach (var named in attr.NamedArguments)
{
switch (named.Key)
{
case "Introduced":
availability.Introduced |= new PlatformSet((ulong)named.Value.Value);
break;
case "Deprecated":
availability.Deprecated |= new PlatformSet((ulong)named.Value.Value);
break;
case "Obsoleted":
availability.Obsoleted |= new PlatformSet((ulong)named.Value.Value);
break;
case "Unavailable":
availability.Unavailable |= new PlatformSet((ulong)named.Value.Value);
break;
case "Message":
string message = named.Value.Value as string;
if (message != null) // maybe throw an exception here instead of silently skipping this?
{
availability.Message += (availability.Message == null) ? message : string.Join("; ", message);
}
break;
}
}
return(availability);
}
