Add support for serializing single enums

examples/01_client_connect.zig

@@ -287,7 +287,7 @@ pub fn main() !void {
                 .width = framebuffer_size[0],
                 .height = framebuffer_size[1],
                 .stride = framebuffer_size[0] * @sizeOf([4]u8),
-                .format = @intFromEnum(wayland.core.Shm.Format.argb8888),
+                .format = .argb8888,
             } },
         );
         try socket.writeAll(std.mem.sliceAsBytes(message));

src/core.zig

@@ -112,8 +112,7 @@ pub const ShmPool = struct {
             width: i32,
             height: i32,
             stride: i32,
-            // Shm.Format
-            format: u32,
+            format: Shm.Format,
         },
         destroy: void,
         resize: struct {

src/main.zig

@@ -176,6 +176,13 @@ pub fn serializeArguments(comptime Signature: type, buffer: []u32, message: Sign
                 buffer[pos] = @bitCast(@field(message, field.name));
                 pos += 1;
             },
+            .Enum => |enum_info| if (enum_info.tag_type == u32) {
+                if (pos >= buffer.len) return error.OutOfMemory;
+                buffer[pos] = @intFromEnum(@field(message, field.name));
+                pos += 1;
+            } else {
+                @compileError("Unsupported type " ++ @typeName(field.type));
+            },
             .Pointer => |ptr| switch (ptr.size) {
                 .Slice => {
                     const str = @field(message, field.name);