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/*
* 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_
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