a035b235b4
* 4.6.0-rc.0 * Fix release script to only release @openzeppelin/contracts (cherry picked from commit2bd75a44bb) * make ERC2981:royaltyInfo public (#3305) (cherry picked from commitd2832ca7a9) Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com> * add transpilation guards to the crosschain mocks (#3306) (cherry picked from commit9af5af8fff) Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com> * Fix tests on upgradeable contracts after transpilation (cherry picked from commit0762479dd5) Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com> * Remove unused constructor argument (cherry picked from commit69c3781043) Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com> * Bump minimum Solidity version for Initializable.sol to 0.8.2 (#3328) (cherry picked from commitcb14ea3c5c) * Fix update-comment script to ignore invalid tags (cherry picked from commit848fef5b6c) Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com> * 4.6.0 Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
55 lines
1.8 KiB
Solidity
55 lines
1.8 KiB
Solidity
// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts (last updated v4.6.0) (crosschain/CrossChainEnabled.sol)
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pragma solidity ^0.8.4;
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import "./errors.sol";
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/**
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* @dev Provides information for building cross-chain aware contracts. This
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* abstract contract provides accessors and modifiers to control the execution
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* flow when receiving cross-chain messages.
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*
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* Actual implementations of cross-chain aware contracts, which are based on
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* this abstraction, will have to inherit from a bridge-specific
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* specialization. Such specializations are provided under
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* `crosschain/<chain>/CrossChainEnabled<chain>.sol`.
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*
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* _Available since v4.6._
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*/
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abstract contract CrossChainEnabled {
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/**
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* @dev Throws if the current function call is not the result of a
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* cross-chain execution.
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*/
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modifier onlyCrossChain() {
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if (!_isCrossChain()) revert NotCrossChainCall();
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_;
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}
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/**
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* @dev Throws if the current function call is not the result of a
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* cross-chain execution initiated by `account`.
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*/
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modifier onlyCrossChainSender(address expected) {
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address actual = _crossChainSender();
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if (expected != actual) revert InvalidCrossChainSender(actual, expected);
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_;
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}
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/**
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* @dev Returns whether the current function call is the result of a
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* cross-chain message.
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*/
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function _isCrossChain() internal view virtual returns (bool);
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/**
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* @dev Returns the address of the sender of the cross-chain message that
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* triggered the current function call.
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*
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* IMPORTANT: Should revert with `NotCrossChainCall` if the current function
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* call is not the result of a cross-chain message.
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*/
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function _crossChainSender() internal view virtual returns (address);
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}
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