ThreadLocal

pub const ThreadLocal = enum(u3) {
    default = 0,
    generaldynamic = 1,
    localdynamic = 2,
    initialexec = 3,
    localexec = 4,

    pub fn format(tl: ThreadLocal, w: *Writer) Writer.Error!void {
        return Prefixed.format(.{ .thread_local = tl, .prefix = "" }, w);
    }

    pub const Prefixed = struct {
        thread_local: ThreadLocal,
        prefix: []const u8,

        pub fn format(p: Prefixed, w: *Writer) Writer.Error!void {
            switch (p.thread_local) {
                .default => return,
                .generaldynamic => {
                    var vecs: [2][]const u8 = .{ p.prefix, "thread_local" };
                    return w.writeVecAll(&vecs);
                },
                else => {
                    var vecs: [4][]const u8 = .{ p.prefix, "thread_local(", @tagName(p.thread_local), ")" };
                    return w.writeVecAll(&vecs);
                },
            }
        }
    };

    pub fn fmt(tl: ThreadLocal, prefix: []const u8) Prefixed {
        return .{ .thread_local = tl, .prefix = prefix };
    }
}