mirror of https://github.com/embarklabs/embark.git
47 lines
1.1 KiB
Solidity
47 lines
1.1 KiB
Solidity
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pragma solidity >=0.5.0 <0.6.0;
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import "./Ownable.sol";
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/**
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* @title Pausable
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* @dev Makes contract functions pausable by the owner
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*/
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contract Pausable is Ownable {
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event Paused();
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event Unpaused();
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bool public paused;
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constructor () internal {
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paused = false;
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}
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modifier whenNotPaused() {
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require(!paused, "Contract must be unpaused");
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_;
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}
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modifier whenPaused() {
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require(paused, "Contract must be paused");
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_;
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}
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/**
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* @dev Disables contract functions marked with "whenNotPaused" and enables the use of functions marked with "whenPaused"
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* Only the owner of the contract can invoke this function
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*/
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function pause() external onlyOwner whenNotPaused {
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paused = true;
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emit Paused();
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}
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/**
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* @dev Enables contract functions marked with "whenNotPaused" and disables the use of functions marked with "whenPaused"
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* Only the owner of the contract can invoke this function
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*/
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function unpause() external onlyOwner whenPaused {
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paused = false;
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emit Unpaused();
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}
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}
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