Add ancillary data mechanism to send fds to compositor.

Currently we are just attaching the fds to the object id.
In theory this is not a valid implementation, since if we
have more than MAX_FD file descriptors this will not work.
But since this wont be the case in basically all cases of
the wayland protocol, we can just ignore that for now.

1 files changed, 18 insertions, 4 deletions

diff --git a/src/object.zig b/src/object.zig
index 14089c1..5502d3d 100644
--- a/src/object.zig
+++ b/src/object.zig
@@ -6,13 +6,24 @@ const Self = @This();
 pub const Ref = usize;
 
 const VTable = struct {
-    on_event: *const fn (ptr: *anyopaque, ctx: *wayland.Context, opcode: u16, args: []const u8) void,
+    on_event: *const fn (
+        ptr: *anyopaque,
+        ctx: *const wayland.Context,
+        opcode: u16,
+        args: []const u8,
+    ) void,
 };
 
 ptr: ?*anyopaque,
 vtable: VTable,
+name: []const u8,
 
-pub inline fn on_event(self: *Self, ctx: *wayland.Context, opcode: u16, args: []const u8) !void {
+pub inline fn on_event(
+    self: *Self,
+    ctx: *const wayland.Context,
+    opcode: u16,
+    args: []const u8,
+) !void {
     if (self.ptr) |ptr| {
         self.vtable.on_event(ptr, ctx, opcode, args);
     } else {
@@ -21,11 +32,14 @@ pub inline fn on_event(self: *Self, ctx: *wayland.Context, opcode: u16, args: []
 }
 
 pub inline fn from_self(ptr: anytype) Self {
+    const T = @TypeOf(ptr.*);
+
     return .{
         .ptr = ptr,
         .vtable = VTable{
-            .on_event = @TypeOf(ptr.*).Events.on_event,
+            .on_event = T.Events.on_event,
         },
+        .name = @typeName(T),
     };
 }
 
@@ -42,5 +56,5 @@ pub fn format(
     _ = fmt;
     _ = options;
 
-    try writer.print("Object {{ {?} }}", .{self.ptr});
+    try writer.print("Object<{s}> {{ {?} }}", .{self.name, self.ptr});
 }