bb64458928
Co-authored-by: Francisco Giordano <fg@frang.io> Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>
34 lines
1.2 KiB
Solidity
34 lines
1.2 KiB
Solidity
// SPDX-License-Identifier: MIT
|
|
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/ERC20Pausable.sol)
|
|
|
|
pragma solidity ^0.8.19;
|
|
|
|
import {ERC20} from "../ERC20.sol";
|
|
import {Pausable} from "../../../security/Pausable.sol";
|
|
|
|
/**
|
|
* @dev ERC20 token with pausable token transfers, minting and burning.
|
|
*
|
|
* Useful for scenarios such as preventing trades until the end of an evaluation
|
|
* period, or having an emergency switch for freezing all token transfers in the
|
|
* event of a large bug.
|
|
*
|
|
* IMPORTANT: This contract does not include public pause and unpause functions. In
|
|
* addition to inheriting this contract, you must define both functions, invoking the
|
|
* {Pausable-_pause} and {Pausable-_unpause} internal functions, with appropriate
|
|
* access control, e.g. using {AccessControl} or {Ownable}. Not doing so will
|
|
* make the contract pause mechanism of the contract unreachable, and thus unusable.
|
|
*/
|
|
abstract contract ERC20Pausable is ERC20, Pausable {
|
|
/**
|
|
* @dev See {ERC20-_update}.
|
|
*
|
|
* Requirements:
|
|
*
|
|
* - the contract must not be paused.
|
|
*/
|
|
function _update(address from, address to, uint256 value) internal virtual override whenNotPaused {
|
|
super._update(from, to, value);
|
|
}
|
|
}
|