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Migrate contracts to Solidity 0.7 (#2319)

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* Update contract pragmas to solidity 0.7

* Remove internal declaration on constructors

* Reference SafeMath explicitely

* Remove public constructor declaration from abstract contracts

* Remove public constructor declaration from non-abstract contracts
This commit is contained in:
Elena Gesheva
2020-07-30 00:11:32 +03:00
committed by GitHub
parent 09014f90f9
commit 04fc35707d
125 changed files with 194 additions and 193 deletions
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6
contracts/token/ERC20/ERC20Capped.sol
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma solidity ^0.7.0;
import "./ERC20.sol";
@ -8,13 +8,15 @@ import "./ERC20.sol";
* @dev Extension of {ERC20} that adds a cap to the supply of tokens.
*/
abstract contract ERC20Capped is ERC20 {
using SafeMath for uint256;
uint256 private _cap;
/**
* @dev Sets the value of the `cap`. This value is immutable, it can only be
* set once during construction.
*/
constructor (uint256 cap) public {
constructor (uint256 cap) {
require(cap > 0, "ERC20Capped: cap is 0");
_cap = cap;
}