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ReverseArbToken.sol
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ReverseArbToken.sol
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// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2020, Offchain Labs, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// solhint-disable-next-line compiler-version
pragma solidity >=0.6.9 <0.9.0;
import "./IArbToken.sol";
/// @title Minimum expected interface for L2 token that interacts with the reverse L2 token bridge (this is the interface necessary
/// for a custom token that interacts with the reverse gateway, see TestArbCustomToken.sol for an example implementation).
/// @dev The L2ArbitrumGateway expects objects of type IArbToken, which includes
/// bridgeMint/burn. However when the L2ReverseCustomGateway overrides the functions
/// that make use of bridgeMint/burn and replaces them with safeTransfer/from.
/// We inherit IArbToken so that we fulfil the interface L2ArbitrumGateway expects
/// but since we know that bridgeMint/burn won't/shouldn't be used we override these
/// functions to ensure that if they throw if called during development
abstract contract ReverseArbToken is IArbToken {
function bridgeMint(address, uint256) public override {
revert("BRIDGE_MINT_NOT_IMPLEMENTED");
}
function bridgeBurn(address, uint256) public override {
revert("BRIDGE_BURN_NOT_IMPLEMENTED");
}
}