commit cdd869a

wire protocol: create object registry

1@@ -11,7 +11,7 @@ pub fn build(b: *std.Build) void {
2         .optimize = optimize,
3     });
4 
5-    // --- Protocol scanner (host-native build tool) ---
6+    // --- Protocol scanner ---
7     const scanner_mod = b.createModule(.{
8         .root_source_file = b.path("tools/scanner.zig"),
9         .target = target,

 1@@ -0,0 +1,52 @@
 2+const proto = @import("protocol.zig");
 3+
 4+extern "env" fn log_error(ptr: [*]const u8, len: u32) void;
 5+
 6+pub const Interface = proto.Interface;
 7+
 8+pub const Object = struct {
 9+    id: u32,
10+    client_id: u32,
11+    iface: Interface,
12+};
13+
14+const MAX = 512;
15+var pool: [MAX]?Object = [_]?Object{null} ** MAX;
16+
17+pub fn register(client_id: u32, id: u32, iface: Interface) ?*Object {
18+    if (id == 0 or id >= MAX) {
19+        const msg = "objects: object ID out of range\n";
20+        log_error(msg, msg.len);
21+        return null;
22+    }
23+    if (pool[id] != null) {
24+        const msg = "objects: duplicate object ID\n";
25+        log_error(msg, msg.len);
26+        return null;
27+    }
28+    pool[id] = Object{ .id = id, .client_id = client_id, .iface = iface };
29+    return &(pool[id] orelse unreachable);
30+}
31+
32+pub fn lookup(client_id: u32, id: u32) ?*Object {
33+    if (id == 0 or id >= MAX) return null;
34+    const obj = pool[id] orelse return null;
35+    if (obj.client_id != client_id) return null;
36+    return &(pool[id] orelse unreachable);
37+}
38+
39+pub fn remove(client_id: u32, id: u32) void {
40+    if (id == 0 or id >= MAX) return;
41+    const obj = pool[id] orelse return;
42+    if (obj.client_id != client_id) return;
43+    pool[id] = null;
44+}
45+
46+pub fn removeAll(client_id: u32) void {
47+    var i: usize = 0;
48+    while (i < MAX) : (i += 1) {
49+        if (pool[i]) |obj| {
50+            if (obj.client_id == client_id) pool[i] = null;
51+        }
52+    }
53+}