51 lines
924 B
Solidity
51 lines
924 B
Solidity
pragma solidity ^0.4.24;
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import "../../Initializable.sol";
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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 Initializable, ERC20Mintable {
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uint256 private _cap;
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function initialize(uint256 cap)
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public
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initializer
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{
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ERC20Mintable.initialize();
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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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