7bb87237f3
* Improve encapsulation on ERC165 * Improve encapsulation on ERC20 * Improve encapsulation on ERC721 * Add tests, use standard getters * fix tests * Fix lint * move interface ids to implementation contracts * Do not prefix getters
45 lines
822 B
Solidity
45 lines
822 B
Solidity
pragma solidity ^0.4.24;
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import "./ERC20Mintable.sol";
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/**
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* @title Capped token
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* @dev Mintable token with a token cap.
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*/
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contract ERC20Capped is ERC20Mintable {
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uint256 private cap_;
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constructor(uint256 _cap) public {
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require(_cap > 0);
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cap_ = _cap;
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}
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/**
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* @return the cap for the token minting.
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*/
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function cap() public view returns(uint256) {
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return cap_;
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}
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/**
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* @dev Function to mint tokens
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* @param _to The address that will receive the minted tokens.
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* @param _amount The amount of tokens to mint.
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* @return A boolean that indicates if the operation was successful.
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*/
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function mint(
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address _to,
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uint256 _amount
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)
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public
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returns (bool)
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{
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require(totalSupply().add(_amount) <= cap_);
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return super.mint(_to, _amount);
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}
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}
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