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Merge pull request #366 from maticnetwork/typed-transactions
Typed transactions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| pragma solidity 0.5.17; | ||
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| import {RLPReader} from "solidity-rlp/contracts/RLPReader.sol"; | ||
| import {BytesLib} from "./BytesLib.sol"; | ||
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| library ExitPayloadReader { | ||
| using RLPReader for bytes; | ||
| using RLPReader for RLPReader.RLPItem; | ||
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| uint8 constant WORD_SIZE = 32; | ||
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| struct ExitPayload { | ||
| RLPReader.RLPItem[] data; | ||
| } | ||
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| struct Receipt { | ||
| RLPReader.RLPItem[] data; | ||
| bytes raw; | ||
| uint256 logIndex; | ||
| } | ||
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| struct Log { | ||
| RLPReader.RLPItem data; | ||
| RLPReader.RLPItem[] list; | ||
| } | ||
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| struct LogTopics { | ||
| RLPReader.RLPItem[] data; | ||
| } | ||
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| function toExitPayload(bytes memory data) | ||
| internal | ||
| pure | ||
| returns (ExitPayload memory) | ||
| { | ||
| RLPReader.RLPItem[] memory payloadData = data | ||
| .toRlpItem() | ||
| .toList(); | ||
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| return ExitPayload(payloadData); | ||
| } | ||
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| function copy(uint src, uint dest, uint len) private pure { | ||
| if (len == 0) return; | ||
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| // copy as many word sizes as possible | ||
| for (; len >= WORD_SIZE; len -= WORD_SIZE) { | ||
| assembly { | ||
| mstore(dest, mload(src)) | ||
| } | ||
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| src += WORD_SIZE; | ||
| dest += WORD_SIZE; | ||
| } | ||
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| // left over bytes. Mask is used to remove unwanted bytes from the word | ||
| uint mask = 256 ** (WORD_SIZE - len) - 1; | ||
| assembly { | ||
| let srcpart := and(mload(src), not(mask)) // zero out src | ||
| let destpart := and(mload(dest), mask) // retrieve the bytes | ||
| mstore(dest, or(destpart, srcpart)) | ||
| } | ||
| } | ||
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| function getHeaderNumber(ExitPayload memory payload) internal pure returns(uint256) { | ||
| return payload.data[0].toUint(); | ||
| } | ||
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| function getBlockProof(ExitPayload memory payload) internal pure returns(bytes memory) { | ||
| return payload.data[1].toBytes(); | ||
| } | ||
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| function getBlockNumber(ExitPayload memory payload) internal pure returns(uint256) { | ||
| return payload.data[2].toUint(); | ||
| } | ||
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| function getBlockTime(ExitPayload memory payload) internal pure returns(uint256) { | ||
| return payload.data[3].toUint(); | ||
| } | ||
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| function getTxRoot(ExitPayload memory payload) internal pure returns(bytes32) { | ||
| return bytes32(payload.data[4].toUint()); | ||
| } | ||
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| function getReceiptRoot(ExitPayload memory payload) internal pure returns(bytes32) { | ||
| return bytes32(payload.data[5].toUint()); | ||
| } | ||
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| function getReceipt(ExitPayload memory payload) internal pure returns(Receipt memory receipt) { | ||
| receipt.raw = payload.data[6].toBytes(); | ||
| RLPReader.RLPItem memory receiptItem = receipt.raw.toRlpItem(); | ||
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| if (receiptItem.isList()) { | ||
| // legacy tx | ||
| receipt.data = receiptItem.toList(); | ||
| } else { | ||
| // pop first byte before parsting receipt | ||
| bytes memory typedBytes = receipt.raw; | ||
| bytes memory result = new bytes(typedBytes.length - 1); | ||
| uint256 srcPtr; | ||
| uint256 destPtr; | ||
| assembly { | ||
| srcPtr := add(33, typedBytes) | ||
| destPtr := add(0x20, result) | ||
| } | ||
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| copy(srcPtr, destPtr, result.length); | ||
| receipt.data = result.toRlpItem().toList(); | ||
| } | ||
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| receipt.logIndex = getReceiptLogIndex(payload); | ||
| return receipt; | ||
| } | ||
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| function getReceiptProof(ExitPayload memory payload) internal pure returns(bytes memory) { | ||
| return payload.data[7].toBytes(); | ||
| } | ||
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| function getBranchMaskAsBytes(ExitPayload memory payload) internal pure returns(bytes memory) { | ||
| return payload.data[8].toBytes(); | ||
| } | ||
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| function getBranchMaskAsUint(ExitPayload memory payload) internal pure returns(uint256) { | ||
| return payload.data[8].toUint(); | ||
| } | ||
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| function getReceiptLogIndex(ExitPayload memory payload) internal pure returns(uint256) { | ||
| return payload.data[9].toUint(); | ||
| } | ||
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| function getTx(ExitPayload memory payload) internal pure returns(bytes memory) { | ||
| return payload.data[10].toBytes(); | ||
| } | ||
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| function getTxProof(ExitPayload memory payload) internal pure returns(bytes memory) { | ||
| return payload.data[11].toBytes(); | ||
| } | ||
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| // Receipt methods | ||
| function toBytes(Receipt memory receipt) internal pure returns(bytes memory) { | ||
| return receipt.raw; | ||
| } | ||
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| function getLog(Receipt memory receipt) internal pure returns(Log memory) { | ||
| RLPReader.RLPItem memory logData = receipt.data[3].toList()[receipt.logIndex]; | ||
| return Log(logData, logData.toList()); | ||
| } | ||
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| // Log methods | ||
| function getEmitter(Log memory log) internal pure returns(address) { | ||
| return RLPReader.toAddress(log.list[0]); | ||
| } | ||
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| function getTopics(Log memory log) internal pure returns(LogTopics memory) { | ||
| return LogTopics(log.list[1].toList()); | ||
| } | ||
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| function getData(Log memory log) internal pure returns(bytes memory) { | ||
| return log.list[2].toBytes(); | ||
| } | ||
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| function toRlpBytes(Log memory log) internal pure returns(bytes memory) { | ||
| return log.data.toRlpBytes(); | ||
| } | ||
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| // LogTopics methods | ||
| function getField(LogTopics memory topics, uint256 index) internal pure returns(RLPReader.RLPItem memory) { | ||
| return topics.data[index]; | ||
| } | ||
| } |
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