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/// Event emitted when add token pair register.
struct TokenPairRegisterEvent has drop, store {
/// token code of X type
x_token_code: Token::TokenCode,
/// token code of X type
y_token_code: Token::TokenCode,
/// signer of token pair register
signer: address,
}
swap交易时会收取千三的手续费,合约自动将交易的token转成xUSDT,前提是有交易token-xUSDT的交易对,而这个交易对维护有一定的运营成本。
如果当前交易token-xUSDT 交易对不存在时,合约会直接将对应比例的交易token转到fee admin账号下,当交易是用户触发的,无法直接拿到fee admin对应的signer,在fee admin账户未accept 交易token前,无法接收该token。
一个优化的思路是,可以在注册token pair时,由offchain对fee admin账号执行自动accept token pair,确保在交易token-xUSDT的交易对未创建时,可以将交易token transfer到fee admin账号下的能力。
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