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33 lines
1.2 KiB
33 lines
1.2 KiB
// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/ERC20Pausable.sol)
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pragma solidity ^0.8.20;
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import {ERC20} from "../ERC20.sol";
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import {Pausable} from "../../../utils/Pausable.sol";
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/**
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* @dev ERC20 token with pausable token transfers, minting and burning.
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*
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* Useful for scenarios such as preventing trades until the end of an evaluation
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* period, or having an emergency switch for freezing all token transfers in the
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* event of a large bug.
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*
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* IMPORTANT: This contract does not include public pause and unpause functions. In
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* addition to inheriting this contract, you must define both functions, invoking the
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* {Pausable-_pause} and {Pausable-_unpause} internal functions, with appropriate
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* access control, e.g. using {AccessControl} or {Ownable}. Not doing so will
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* make the contract pause mechanism of the contract unreachable, and thus unusable.
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*/
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abstract contract ERC20Pausable is ERC20, Pausable {
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/**
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* @dev See {ERC20-_update}.
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*
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* Requirements:
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*
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* - the contract must not be paused.
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*/
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function _update(address from, address to, uint256 value) internal virtual override whenNotPaused {
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super._update(from, to, value);
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}
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}
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