35 lines
801 B
Solidity
35 lines
801 B
Solidity
// contracts/NFTBridgeImplementation.sol
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// SPDX-License-Identifier: Apache 2
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pragma solidity ^0.8.0;
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pragma experimental ABIEncoderV2;
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import "@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol";
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import "./NFTBridge.sol";
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contract NFTBridgeImplementation is NFTBridge {
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// Beacon getter for the token contracts
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function implementation() public view returns (address) {
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return tokenImplementation();
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}
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function initialize() initializer public virtual {
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// this function needs to be exposed for an upgrade to pass
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}
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modifier initializer() {
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address impl = ERC1967Upgrade._getImplementation();
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require(
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!isInitialized(impl),
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"already initialized"
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);
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setInitialized(impl);
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_;
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}
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}
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