feat: update fill logic #55
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| /// The user calls `initiate` on a rollup; the Builder calls `fill` on the target chain aggregating Outputs. | ||
| /// @param outputs - The Outputs to be transferred. | ||
| /// @dev NOTE that here, Output.chainId denotes the *origin* chainId. | ||
| /// @custom:emits Filled |
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should note the caller is allowed to collapse outputs if the chain Id, recipient, and token are the same (by adding the value together)
prestwich
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Jul 2, 2024
| for (uint256 i; i < outputs.length; i++) { | ||
| if (outputs[i].token == address(0)) { | ||
| // this line should underflow if there's an attempt to spend more ETH than is attached to the transaction | ||
| value -= outputs[i].amount; |
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opt: future versions could crawl the list and collapse transfers to the same account, instead of having 1 transfer per output
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yeah, the Solidity for this is a bit gnarly though :) the Builder should aggregate the Outputs offchain to save on gas.
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builder can't aggregate outputs with different chain ids tho
prestwich
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supersedes #53