什么是TL方案在吨-坚实和如何使用它？

Question

这个问题是关于Everscale区块链智能合同中的大量可靠语言的问题。

有时，我会看到与TL-B方案相关的代码。例如，如下所示：

function getInvokeMessage(address sender, address recipient, uint128 amount, bool bounce, TvmCell payload) public pure
        returns(TvmCell message) {
        TvmCell body = tvm.encodeBody(MsigDebot.invokeTransaction, sender, recipient, amount, bounce, payload);
        TvmBuilder message_;
        message_.store(false, true, true, false, address(0), address(this));
        message_.storeTons(0);
        message_.storeUnsigned(0, 1);
        message_.storeTons(0);
        message_.storeTons(0);
        message_.store(uint64(0));
        message_.store(uint32(0));
        message_.storeUnsigned(0, 1); //init: nothing$0
        message_.storeUnsigned(1, 1); //body: right$1
        message_.store(body);
        message = message_.toCell();
    }

我需要一步一步的解释，这段代码在做什么？或者给我参考一下解释它的文档。

Answer 1

消息相应地构造为TL方案。

一般来说，该消息的类型称为"Message“

这种类型由三个部分组成。

第一部分是"CommonMsgInfo“。

           /* int_msg_info$0
           ihr_disabled:Bool
           bounce:Bool
           bounced:Bool
           src:MsgAddressInt
           dest:MsgAddressInt */
        message_.store(false, true, true, false, address(0), address(this));
        message_.storeTons(0);//value:CurrencyCollection
        message_.storeUnsigned(0, 1);//value:CurrencyCollection (for other currencies)
        // In the next 4 fields we store zeroes, because blockchain software will replace them
        // with the correct values after this function finishes execution.         
        message_.storeTons(0);//ihr_fee:Grams
        message_.storeTons(0);//fwd_fee:Grams
        message_.store(uint64(0));//created_lt:uint64
        message_.store(uint32(0));//created_at:uint32

第二部分有"init“类型。

        message_.storeUnsigned(0, 1); //no initial state

第三部分为“体”型。

        message_.storeUnsigned(1, 1); //1 because, we don't store body in current cell
        message_.store(body);