Support Pair default fee in RouterV2 #122
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ggawryal
reviewed
Oct 30, 2024
woocash2
reviewed
Oct 30, 2024
| let fee = match contract_ref.call().get_fee().try_invoke() { | ||
| Ok(Ok(fee)) => fee, | ||
| // is not a Pair contract. | ||
| let token_0 = match contract_ref.call().get_token_0().try_invoke() { |
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Why suddenly like this & why obtain token0 and token1 differently?
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Because the Pair contract may not implement get_fee(), however, it must implement get_token_0() and get_token_1().
Given that get_token_0() call is successful, we assume that the contract is a Pair, and there's no need to control the invocation of the get_token_1().
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