Method throw_exception

src/Chain/libraries/glua/thinkyoung_lua_api.cpp:74–114

* when exception happened, use this api to tell thinkyoung * @param L the lua stack * @param code error code, 0 is OK, other is different error * @param error_format error info string, will be released by lua * @param ... error arguments */

            * @param ... error arguments
            */
            void GluaChainApi::throw_exception(lua_State *L, int code, const char *error_format, ...)
            {
                has_error = 1;
                char *msg = (char*)lua_malloc(L, LUA_EXCEPTION_MULTILINE_STRNG_MAX_LENGTH);
                memset(msg, 0x0, LUA_EXCEPTION_MULTILINE_STRNG_MAX_LENGTH);

                va_list vap;
                va_start(vap, error_format);
                // printf(error_format, vap);
                // const char *msg = luaO_pushfstring(L, error_format, vap);
                vsnprintf(msg, LUA_EXCEPTION_MULTILINE_STRNG_MAX_LENGTH, error_format, vap);
                va_end(vap);
                if (strlen(msg) > LUA_EXCEPTION_MULTILINE_STRNG_MAX_LENGTH - 1)
                {
                    msg[LUA_EXCEPTION_MULTILINE_STRNG_MAX_LENGTH - 1] = 0;
                }
                //perror(msg);
                //printf("\n");
                // luaL_error(L, error_format); // notify lua error
                //FC_THROW(msg);

                lua_set_compile_error(L, msg);

                //如果上次的exception code为THINKYOUNG_API_LVM_LIMIT_OVER_ERROR, 不能被其他异常覆盖
                //只有调用clear清理后，才能继续记录异常
                int last_code = lua::lib::get_lua_state_value(L, "exception_code").int_value;
                if (last_code == THINKYOUNG_API_LVM_LIMIT_OVER_ERROR
                    && code != THINKYOUNG_API_LVM_LIMIT_OVER_ERROR)
                {
                    return;
                }

                GluaStateValue val_code;
                val_code.int_value = code;

                GluaStateValue val_msg;
                val_msg.string_value = msg;

                lua::lib::set_lua_state_value(L, "exception_code", val_code, GluaStateValueType::LUA_STATE_VALUE_INT);
                lua::lib::set_lua_state_value(L, "exception_msg", val_msg, GluaStateValueType::LUA_STATE_VALUE_STRING);
            }

            /**
            * check whether the contract apis limit over, in this lua_State