文件 1 的 7:ERC20Detailed.sol
pragma solidity ^0.6.4;
import "./IERC20.sol";
abstract contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string memory name, string memory symbol, uint8 decimals)
public
{
_name = name;
_symbol = symbol;
_decimals = decimals;
}
function name() public view returns(string memory) {
return _name;
}
function symbol() public view returns(string memory) {
return _symbol;
}
function decimals() public view returns(uint8) {
return _decimals;
}
}
文件 2 的 7:ESMToken.sol
pragma solidity ^0.6.4;
import "./SafeMath.sol";
import "./Pausable.sol";
import "./Lockable.sol";
import "./ERC20Detailed.sol";
contract ESMToken is ERC20Detailed, Lockable, Pausable {
using SafeMath for uint256;
string private constant TOKEN_NAME = "ESM";
string private constant TOKEN_SYMBOL = "ESM";
uint8 private constant TOKEN_DECIMALS = 6;
uint256 private constant TOKEN_INIT_SUPPLY = 100000000 * (10**(uint256(TOKEN_DECIMALS)));
uint256 private _totalSupply;
mapping(address => uint256) _balances;
event Mint(address indexed to, uint256 amount);
event Burn(address indexed burner, uint256 value);
mapping (address => mapping (address => uint256)) private _allowedFragments;
constructor()
ERC20Detailed(TOKEN_NAME, TOKEN_SYMBOL, TOKEN_DECIMALS)
public
{
_totalSupply = TOKEN_INIT_SUPPLY;
_balances[msg.sender] = TOKEN_INIT_SUPPLY;
emit Transfer(address(0x0), msg.sender, TOKEN_INIT_SUPPLY);
}
function mint(address to, uint256 value)
public
onlyOwner
returns (bool)
{
require(to != address(0), "EFIToken: [mint] to illegal");
_totalSupply = _totalSupply.add(value);
_balances[to] = _balances[to].add(value);
emit Mint(to, value);
emit Transfer(address(0), to, value);
return true;
}
function burn(uint256 value)
public
returns (bool)
{
address burner = msg.sender;
_balances[burner] = _balances[burner].sub(value);
_totalSupply = _totalSupply.sub(value);
emit Burn(burner, value);
return true;
}
function _move(address from, address to, uint256 value)
private
{
require(value <= _balances[from], "EFIToken: [_move] balance not enough");
require(to != address(0), "EFIToken: [_move] to[address] is illegal");
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
}
function transfer(address to, uint256 value)
public
override
whenNotPaused
returns (bool)
{
require(notLock(msg.sender));
require(notLock(to));
_move(msg.sender, to, value);
emit Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint256 value)
public
override
whenNotPaused
returns (bool)
{
require(notLock(msg.sender));
require(notLock(from));
require(notLock(to));
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
_move(from, to, value);
emit Transfer(from, to, value);
return true;
}
function totalSupply()
public
override
view
returns (uint256)
{
return _totalSupply;
}
function balanceOf(address who)
public
override
view
returns (uint256)
{
return _balances[who];
}
function allowance(address owner, address spender)
external
override
view
returns (uint256)
{
return _allowedFragments[owner][spender];
}
function approve(address spender, uint256 value)
public
override
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
_allowedFragments[msg.sender][spender] = _allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
}
文件 3 的 7:IERC20.sol
pragma solidity ^0.6.4;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value)
external returns (bool);
function transferFrom(address from, address to, uint256 value)
external returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
文件 4 的 7:Lockable.sol
pragma solidity ^0.6.4;
import "./Ownable.sol";
contract Lockable is Ownable {
mapping (address => uint) private _blockList;
function notLock(address who)
public
view
returns (bool)
{
return _blockList[who] == 0;
}
function setBlockList(address[] calldata whos)
external
onlyOwner
{
for (uint i = 0; i < whos.length; i++) {
_blockList[whos[i]] = 1;
}
}
function unsetBlockList(address[] calldata whos)
external
onlyOwner
{
for (uint i = 0; i < whos.length; i++) {
_blockList[whos[i]] = 0;
}
}
}
文件 5 的 7:Ownable.sol
pragma solidity ^0.6.4;
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner, "Ownable: [onlyOwner]");
_;
}
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
function transferOwnership(address _newOwner) public onlyOwner {
require(_newOwner != address(0), "Ownable: [transferOwnership] _newOwner illegal");
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
文件 6 的 7:Pausable.sol
pragma solidity ^0.6.4;
import "./Ownable.sol";
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
modifier whenNotPaused() {
require(!paused, "Pausable: not paused");
_;
}
modifier whenPaused() {
require(paused, "Pausable: paused");
_;
}
function pause()
public
onlyOwner
whenNotPaused
{
paused = true;
emit Pause();
}
function unpause()
public
onlyOwner
whenPaused
{
paused = false;
emit Unpause();
}
}
文件 7 的 7:SafeMath.sol
pragma solidity ^0.6.4;
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0);
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
{
"compilationTarget": {
"browser/ESMToken.sol": "ESMToken"
},
"evmVersion": "istanbul",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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