Function luaL_tolstring

src/Chain/libraries/glua/lauxlib.cpp:2444–2480

LUALIB_API const char *luaL_tolstring(lua_State *L, int idx, size_t *len) {
    if (!luaL_callmeta(L, idx, "__tostring")) {  /* no metafield? */
        switch (lua_type(L, idx)) {
        case LUA_TNUMBER: {
            if (lua_isinteger(L, idx))
            {
              auto value = lua_tointeger(L, idx);
              std::string s = std::to_string(value);
              lua_pushfstring(L, "%s", s.c_str());
            }
            else {
              auto value = lua_tonumber(L, idx);
              std::string s = std::to_string(value);
              lua_pushfstring(L, "%s", s.c_str());
            }
            break;
        }
        case LUA_TSTRING:
            lua_pushvalue(L, idx);
            break;
        case LUA_TBOOLEAN:
            lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false"));
            break;
        case LUA_TNIL:
            lua_pushliteral(L, "nil");
            break;
        default:
            auto value_typename = luaL_typename(L, idx);
			lua_pushfstring(L, "%s: %d", value_typename,
				0);
            //lua_pushfstring(L, "%s: %p", luaL_typename(L, idx),
            //    lua_topointer(L, idx));
            break;
        }
    }
    return lua_tolstring(L, -1, len);
}

void free_lua_table_map(lua_State *L, GluaTableMapP map)
{