Unable to create HashTable with org.gnome.secret.SchemaAttributeType as value

[Nyeksenn]

If I want to create a schema using the libsecret bindings the following has to be done:

var table = new HashTable<>(GLib::strHash, GLib::strEqual,
        (address) -> address.getString(0),
        (address) -> SchemaAttributeType.of(address.getAtIndex(ValueLayout.JAVA_INT, 0)));
table.insert("user", SchemaAttributeType.STRING);
var schema = new Schema("MySchema", SchemaFlags.NONE, table);

However, this is currently not possible because inserting into the table fails with an assertion error:

Exception in thread "main" java.lang.AssertionError: java.lang.IllegalArgumentException: Not a MemorySegment, String, primitive or Proxy
	at org.gnome.glib.HashTable.insert(HashTable.java:570)
	at io.github.Nyeksenn.grooveboat.Main.main(Main.java:54)
Caused by: java.lang.IllegalArgumentException: Not a MemorySegment, String, primitive or Proxy
Caused by: java.lang.IllegalArgumentException: Not a MemorySegment, String, primitive or Proxy

	at org.javagi.interop.Interop.getAddress(Interop.java:626)
	at org.gnome.glib.HashTable.insert(HashTable.java:568)
	... 1 more

Java-GI version: 0.13.0-RC1

[jwharm]

Last weekend I started experimenting a bit, and added support for enum values in hashtables in the enum-hashtable branch. I'm not completely satisfied with it though.

[jwharm]

The reason I'm not satisfied with it yet, is that the solution in the new branch adds a static of(MemorySegment) function in all enum/flags classes. I'd rather read the enum value from memory somewhere else and simply call the existing of(int) functions, but that doesn't play well with the HashTable constructor...

Tangentially related: all flags classes have of(int) functions, just like the enumeration classes, but on second thought, I think those should actually return a Set<FooFlags> instead of a single FooFlags value. For example: ApplicationFlags.of(int)) would error out when the input value is NON_UNIQUE | HANDLES_COMMAND_LINE.