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ERC20Pausable.sol
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ERC20Pausable.sol
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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Pausable.sol)
pragma solidity ^0.8.20;
import {ERC20} from "../ERC20.sol";
import {Pausable} from "../../../utils/Pausable.sol";
/**
* @dev ERC-20 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);
}
}