basic lua tools

1 files changed, 32 insertions, 7 deletions

diff --git a/src/main.zig b/src/main.zig
index 6fbdb4b..6407611 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,14 +1,18 @@
 const std = @import("std");
 const panto = @import("panto");
 const ping_tool = @import("ping_tool.zig");
+const lua_bridge = @import("lua_bridge.zig");
+const lua_tool = @import("lua_tool.zig");
 
-// Lua 5.4 C API. Linked statically via build.zig from the upstream lua.org
-// source tarball pinned in build.zig.zon.
-const lua = @cImport({
-    @cInclude("lua.h");
-    @cInclude("lauxlib.h");
-    @cInclude("lualib.h");
-});
+// Shorthand alias for the Lua C API. The bridge module owns the actual
+// `@cImport`; we re-use it here so the smoke check uses identical types.
+const lua = lua_bridge.c;
+
+test {
+    std.testing.refAllDecls(@This());
+    _ = lua_bridge;
+    _ = lua_tool;
+}
 
 const Receiver = panto.provider.Receiver;
 const ReceiverVTable = panto.provider.ReceiverVTable;
@@ -221,6 +225,27 @@ pub fn main(init: std.process.Init) !void {
     // the tool-call loop against a real LLM.
     try agent.registerTool(ping_tool.tool());
 
+    // Load any Lua extensions specified via `--lua <path>` flags. This is a
+    // slice-2 manual hook — slice 3 will replace it with directory discovery.
+    const argv = try init.minimal.args.toSlice(init.arena.allocator());
+    var i: usize = 1;
+    while (i < argv.len) : (i += 1) {
+        const a = argv[i];
+        if (std.mem.eql(u8, a, "--lua")) {
+            i += 1;
+            if (i >= argv.len) {
+                std.log.err("--lua requires a path argument", .{});
+                return error.MissingLuaPath;
+            }
+            const path = argv[i];
+            const n = lua_tool.loadExtension(alloc, &agent.registry, path) catch |err| {
+                std.log.err("failed to load Lua extension {s}: {t}", .{ path, err });
+                return err;
+            };
+            std.log.debug("lua: loaded {d} tool(s) from {s}", .{ n, path });
+        }
+    }
+
     const banner_model: []const u8 = switch (config) {
         inline else => |c| c.model,
     };