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Token.sol
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Token.sol
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/*
This file is part of The Colony Network.
The Colony Network is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The Colony Network is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with The Colony Network. If not, see <http://www.gnu.org/licenses/>.
*/
pragma solidity 0.8.10;
import "../lib/dappsys/auth.sol";
import "../lib/dappsys/base.sol";
import "./ERC20Extended.sol";
contract Token is DSTokenBase(0), DSAuth, ERC20Extended {
uint8 public decimals;
string public symbol;
string public name;
bool public locked;
modifier unlocked {
if (locked) {
require(isAuthorized(msg.sender, msg.sig), "colony-token-unauthorised");
}
_;
}
constructor(string memory _name, string memory _symbol, uint8 _decimals) public {
name = _name;
symbol = _symbol;
decimals = _decimals;
locked = true;
}
function transferFrom(address src, address dst, uint wad) public
override(DSTokenBase, ERC20)
unlocked
returns (bool)
{
return super.transferFrom(src, dst, wad);
}
function mint(uint wad) public override auth {
mint(msg.sender, wad);
}
function burn(uint wad) public override {
burn(msg.sender, wad);
}
function mint(address guy, uint wad) public override auth {
_balances[guy] = add(_balances[guy], wad);
_supply = add(_supply, wad);
emit Mint(guy, wad);
emit Transfer(address(0x0), guy, wad);
}
function burn(address guy, uint wad) public override {
if (guy != msg.sender) {
require(_approvals[guy][msg.sender] >= wad, "ds-token-insufficient-approval");
_approvals[guy][msg.sender] = sub(_approvals[guy][msg.sender], wad);
}
require(_balances[guy] >= wad, "ds-token-insufficient-balance");
_balances[guy] = sub(_balances[guy], wad);
_supply = sub(_supply, wad);
emit Burn(guy, wad);
}
function unlock() public
auth
{
locked = false;
}
}