Fix support for non Apple frameworks and add a test.

src/rgen/Microsoft.Macios.Generator/Emitters/EnumEmitter.cs

@@ -26,8 +26,8 @@ void Emit (TabbedStringBuilder classBlock, (IFieldSymbol Symbol, FieldData Field
 		using (var propertyBlock = classBlock.CreateBlock ($"internal unsafe static IntPtr {enumField.FieldData.SymbolName}", true))
 		using (var getterBlock = propertyBlock.CreateBlock ("get", true)) {
 			getterBlock.AppendFormatLine ("fixed (IntPtr *storage = &values [{0}])", index);
-			getterBlock.AppendFormatLine("\treturn Dlfcn.CachePointer (Libraries.{0}.Handle, \"{1}\", storage);",
-				libraryPath ?? libraryName, enumField.FieldData.SymbolName);
+			getterBlock.AppendFormatLine("\treturn Dlfcn.CachePointer ({0}, \"{1}\", storage);",
+				(libraryPath is null) ? $"Libraries.{libraryName}.Handle" : $"\"{libraryPath}\"", enumField.FieldData.SymbolName);
 		}
 	}
 

tests/rgen/Microsoft.Macios.Generator.Tests/SmartEnum/Data/CustomLibraryEnum.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Runtime.Versioning;
+using Foundation;
+using ObjCRuntime;
+using ObjCBindings;
+
+namespace CustomLibrary;
+
+[BindingType]
+public enum CustomLibraryEnum {
+	[Field ("None", "/path/to/customlibrary.framework")]
+	None,
+	[Field ("Medium", "/path/to/customlibrary.framework")]
+	Medium,
+	[Field ("High", "/path/to/customlibrary.framework")]
+	High,
+}

tests/rgen/Microsoft.Macios.Generator.Tests/SmartEnum/Data/ExpectedCustomLibraryEnum.cs

@@ -0,0 +1,103 @@
+// <auto-generated>
+
+#nullable enable
+
+using System;
+using System.Runtime.Versioning;
+using Foundation;
+using ObjCRuntime;
+using ObjCBindings;
+
+namespace CustomLibrary;
+
+[BindingImpl (BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
+static public partial class CustomLibraryEnumExtensions
+{
+
+	static IntPtr[] values = new IntPtr [3];
+
+	[Field ("None", "/path/to/customlibrary.framework")]
+	internal unsafe static IntPtr None
+	{
+		get
+		{
+			fixed (IntPtr *storage = &values [0])
+				return Dlfcn.CachePointer ("/path/to/customlibrary.framework", "None", storage);
+		}
+	}
+
+	[Field ("Medium", "/path/to/customlibrary.framework")]
+	internal unsafe static IntPtr Medium
+	{
+		get
+		{
+			fixed (IntPtr *storage = &values [1])
+				return Dlfcn.CachePointer ("/path/to/customlibrary.framework", "Medium", storage);
+		}
+	}
+
+	[Field ("High", "/path/to/customlibrary.framework")]
+	internal unsafe static IntPtr High
+	{
+		get
+		{
+			fixed (IntPtr *storage = &values [2])
+				return Dlfcn.CachePointer ("/path/to/customlibrary.framework", "High", storage);
+		}
+	}
+
+	public static NSString? GetConstant (this CustomLibraryEnum self)
+	{
+		IntPtr ptr = IntPtr.Zero;
+		switch ((int) self)
+		{
+			case 0: // None
+				ptr = None;
+				break;
+			case 1: // Medium
+				ptr = Medium;
+				break;
+			case 2: // High
+				ptr = High;
+				break;
+		}
+		return (NSString?) Runtime.GetNSObject (ptr);
+	}
+
+	public static CustomLibraryEnum GetValue (NSString constant)
+	{
+		if (constant is null)
+			throw new ArgumentNullException (nameof (constant));
+		if (constant.IsEqualTo (None))
+			return CustomLibraryEnum.None;
+		if (constant.IsEqualTo (Medium))
+			return CustomLibraryEnum.Medium;
+		if (constant.IsEqualTo (High))
+			return CustomLibraryEnum.High;
+		throw new NotSupportedException ($"{constant} has no associated enum value on this platform.");
+	}
+
+	internal static NSString?[]? ToConstantArray (this CustomLibraryEnum[]? values)
+	{
+		if (values is null)
+			return null;
+		var rv = new global::System.Collections.Generic.List<NSString?> ();
+		for (var i = 0; i < values.Length; i++) {
+			var value = values [i];
+			rv.Add (value.GetConstant ());
+		}
+		return rv.ToArray ();
+	}
+
+	internal static CustomLibraryEnum[]? ToEnumArray (this NSString[]? values)
+	{
+		if (values is null)
+			return null;
+		var rv = new global::System.Collections.Generic.List<CustomLibraryEnum> ();
+		for (var i = 0; i < values.Length; i++) {
+			var value = values [i];
+			rv.Add (GetValue (value));
+		}
+		return rv.ToArray ();
+	}
+}

tests/rgen/Microsoft.Macios.Generator.Tests/SmartEnum/SmartEnumTests.cs

@@ -19,6 +19,7 @@ public class TestDataGenerator : BaseTestDataGenerator, IEnumerable<object[]>
 			(ApplePlatform.iOS, "AVCaptureSystemPressureLevelExtensions", "AVCaptureSystemPressureLevel.cs", "ExpectedAVCaptureSystemPressureLevel.cs" ),
 			(ApplePlatform.iOS, "AVMediaCharacteristicsExtensions", "AVMediaCharacteristics.cs", "ExpectediOSAVMediaCharacteristics.cs" ),
 			(ApplePlatform.MacOSX, "AVMediaCharacteristicsExtensions", "AVMediaCharacteristics.cs", "ExpectedMacOSAVMediaCharacteristics.cs" ),
+			(ApplePlatform.MacOSX, "CustomLibraryEnumExtensions", "CustomLibraryEnum.cs", "ExpectedCustomLibraryEnum.cs" ),
 		};
 
 		public IEnumerator<object[]> GetEnumerator()