1 files changed, 45 insertions, 0 deletions
diff --git a/bindings/lua/upb.h b/bindings/lua/upb.h
new file mode 100644
index 0000000..e6b4f2f
--- /dev/null
+++ b/bindings/lua/upb.h
@@ -0,0 +1,45 @@
+/*
+ * upb - a minimalist implementation of protocol buffers.
+ *
+ * Copyright (c) 2012 Google Inc.  See LICENSE for details.
+ * Author: Josh Haberman <jhaberman@gmail.com>
+ *
+ * Shared definitions for upb Lua modules.
+ */
+
+#ifndef UPB_LUA_UPB_H_
+#define UPB_LUA_UPB_H_
+
+#include "upb/def.h"
+
+// Lua 5.1/5.2 compatibility code.
+#if LUA_VERSION_NUM == 501
+
+#define lua_rawlen lua_objlen
+#define lupb_newlib(L, name, l) luaL_register(L, name, l)
+#define lupb_setfuncs(L, l) luaL_register(L, NULL, l)
+#define LUPB_OPENFUNC(mod) luaopen_ ## mod ## upb5_1
+
+void *luaL_testudata(lua_State *L, int ud, const char *tname);
+
+#elif LUA_VERSION_NUM == 502
+
+// Lua 5.2 modules are not expected to set a global variable, so "name" is
+// unused.
+#define lupb_newlib(L, name, l) luaL_newlib(L, l)
+#define lupb_setfuncs(L, l) luaL_setfuncs(L, l, 0)
+int luaL_typerror(lua_State *L, int narg, const char *tname);
+#define LUPB_OPENFUNC(mod) luaopen_ ## mod ## upb5_2
+
+#else
+#error Only Lua 5.1 and 5.2 are supported
+#endif
+
+const upb_msgdef *lupb_msgdef_check(lua_State *L, int narg);
+const upb_enumdef *lupb_enumdef_check(lua_State *L, int narg);
+const char *lupb_checkname(lua_State *L, int narg);
+bool lupb_def_pushwrapper(lua_State *L, const upb_def *def, const void *owner);
+void lupb_def_pushnewrapper(lua_State *L, const upb_def *def,
+                            const void *owner);
+
+#endif  // UPB_LUA_UPB_H_