Function meta_pairs

library/LuaWrapper.cpp:1136–1143

* Metamethod: __pairs, returning 1st upvalue as iterator */

 * Metamethod: __pairs, returning 1st upvalue as iterator
 */
static int meta_pairs(lua_State *state)
{
    luaL_checkany(state, 1);
    lua_pushvalue(state, lua_upvalueindex(1));
    lua_pushvalue(state, 1);
    lua_pushnil(state);
    return 3;
}

/**
 * Make a metatable with most common fields, and an empty table for UPVAL_FIELDTABLE.