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Add _initializableStorageSlot (#5337)

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Co-authored-by: Arr00 <13561405+arr00@users.noreply.github.com>
This commit is contained in:
Ernesto García
2025-02-24 22:40:42 +08:00
committed by GitHub
parent 3bdc3a35c5
commit 2ed8956992
2 changed files with 16 additions and 1 deletions
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5
.changeset/fast-coats-try.md Normal file
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@ -0,0 +1,5 @@
---
'openzeppelin-solidity': minor
---
`Initializable`: Add `_initializableStorageSlot` function that returns a pointer to the storage struct. The function allows customizing with a custom storage slot with an `override`.

12
contracts/proxy/utils/Initializable.sol
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@ -216,13 +216,23 @@ abstract contract Initializable {
return _getInitializableStorage()._initializing;
}
/**
* @dev Pointer to storage slot. Allows integrators to override it with a custom storage location.
*
* NOTE: Consider following the ERC-7201 formula to derive storage locations.
*/
function _initializableStorageSlot() internal pure virtual returns (bytes32) {
return INITIALIZABLE_STORAGE;
}
/**
* @dev Returns a pointer to the storage namespace.
*/
// solhint-disable-next-line var-name-mixedcase
function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
bytes32 slot = _initializableStorageSlot();
assembly {
$.slot := INITIALIZABLE_STORAGE
$.slot := slot
}
}
}