implement the zmez_remote_lua_v1 protocol

src/RemoteLua.zig

@@ -0,0 +1,55 @@
+const RemoteLua = @This();
+
+const std = @import("std");
+const wayland = @import("wayland");
+const Utils = @import("utils.zig");
+const wl = wayland.server.wl;
+const mez = wayland.server.zmez;
+
+const gpa = std.heap.c_allocator;
+const server = &@import("main.zig").server;
+const Lua = &@import("main.zig").lua;
+
+id: usize,
+remote_lua_v1: *mez.RemoteLuaV1,
+
+pub fn sendNewLogEntry(str: [*:0]const u8) void {
+  for (server.remote_lua_clients.items) |c| {
+    c.remote_lua_v1.sendNewLogEntry(str);
+  }
+}
+
+pub fn create(client: *wl.Client, version: u32, id: u32) !void {
+  const remote_lua_v1 = try mez.RemoteLuaV1.create(client, version, id);
+
+  const node = try gpa.create(RemoteLua);
+  errdefer gpa.destroy(node);
+  node = .{
+    .remote_lua_v1 = remote_lua_v1,
+    .id = server.remote_lua_clients.items.len,
+  };
+  server.remote_lua_clients.append(gpa, node);
+
+  remote_lua_v1.setHandler(*RemoteLua, handleRequest, handleDestroy, &node);
+}
+
+fn handleRequest(
+remote_lua_v1: *mez.RemoteLuaV1,
+request: mez.RemoteLuaV1.Request,
+_: *RemoteLua,
+) void {
+  switch (request) {
+    .destroy => remote_lua_v1.destroy(),
+    .push_lua => |req| {
+      Lua.state.loadString(req.lua_chunk) catch {
+        const errTxt: []const u8 = Lua.state.toString(-1) catch unreachable;
+        try sendNewLogEntry("repl: " ++ errTxt);
+      };
+    },
+  }
+}
+
+fn handleDestroy(_: *mez.RemoteLuaV1, remote_lua: *RemoteLua) void {
+  server.remote_lua_clients.swapRemove(remote_lua.id);
+  gpa.destroy(remote_lua);
+}