5dfe7215a9
* Initial migration to Solidity 0.6.x - v3.0 first steps (#2063) * Initial migration, missing GSN, 721, 777 and Crowdsales. * Add _beforeTokenOperation and _afterTokenOperation. * Add documentation for hooks. * Add hooks doc * Add missing drafts * Add back ERC721 with hooks * Bring back ERC777 * Notes on hooks * Bring back GSN * Make functions virtual * Make GSN overrides explicit * Fix ERC20Pausable tests * Remove virtual from some view functions * Update linter * Delete examples * Remove unnecessary virtual * Remove roles from Pausable * Remove roles * Remove users of roles * Adapt ERC20 tests * Fix ERC721 tests * Add all ERC721 hooks * Add ERC777 hooks * Fix remaining tests * Bump compiler version * Move 721BurnableMock into mocks directory * Remove _before hooks * Fix tests * Upgrade linter * Put modifiers last * Remove _beforeTokenApproval and _beforeOperatorApproval hooks
51 lines
1.3 KiB
Solidity
51 lines
1.3 KiB
Solidity
pragma solidity ^0.6.0;
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import "../GSN/Context.sol";
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/**
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* @dev A Secondary contract can only be used by its primary account (the one that created it).
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*/
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contract Secondary is Context {
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address private _primary;
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/**
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* @dev Emitted when the primary contract changes.
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*/
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event PrimaryTransferred(
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address recipient
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);
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/**
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* @dev Sets the primary account to the one that is creating the Secondary contract.
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*/
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constructor () internal {
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address msgSender = _msgSender();
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_primary = msgSender;
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emit PrimaryTransferred(msgSender);
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}
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/**
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* @dev Reverts if called from any account other than the primary.
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*/
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modifier onlyPrimary() {
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require(_msgSender() == _primary, "Secondary: caller is not the primary account");
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_;
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}
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/**
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* @return the address of the primary.
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*/
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function primary() public view returns (address) {
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return _primary;
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}
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/**
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* @dev Transfers contract to a new primary.
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* @param recipient The address of new primary.
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*/
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function transferPrimary(address recipient) public virtual onlyPrimary {
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require(recipient != address(0), "Secondary: new primary is the zero address");
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_primary = recipient;
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emit PrimaryTransferred(recipient);
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}
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}
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