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44 lines
1.4 KiB
44 lines
1.4 KiB
3 years ago
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.4;
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import "../CrossChainEnabled.sol";
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import "./LibArbitrumL1.sol";
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/**
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* @dev [Arbitrum](https://arbitrum.io/) specialization or the
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* {CrossChainEnabled} abstraction the L1 side (mainnet).
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*
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* This version should only be deployed on L1 to process cross-chain messages
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* originating from L2. For the other side, use {CrossChainEnabledArbitrumL2}.
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*
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* The bridge contract is provided and maintained by the arbitrum team. You can
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* find the address of this contract on the rinkeby testnet in
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* [Arbitrum's developer documentation](https://developer.offchainlabs.com/docs/useful_addresses).
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*
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* _Available since v4.6._
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*/
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abstract contract CrossChainEnabledArbitrumL1 is CrossChainEnabled {
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/// @custom:oz-upgrades-unsafe-allow state-variable-immutable
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address private immutable _bridge;
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/// @custom:oz-upgrades-unsafe-allow constructor
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constructor(address bridge) {
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_bridge = bridge;
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}
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/**
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* @dev see {CrossChainEnabled-_isCrossChain}
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*/
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function _isCrossChain() internal view virtual override returns (bool) {
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return LibArbitrumL1.isCrossChain(_bridge);
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}
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/**
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* @dev see {CrossChainEnabled-_crossChainSender}
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*/
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function _crossChainSender() internal view virtual override onlyCrossChain returns (address) {
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return LibArbitrumL1.crossChainSender(_bridge);
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}
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}
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