文件 1 的 1:LEGSToken.sol
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
abstract contract Ownable is Context{
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
_setOwner(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract ERC20 is Context,IERC20 {
mapping (address => uint256) internal _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint256 internal immutable _RELEASE_TIME_TEAM_TOKENS;
uint256 internal immutable _RELEASE_TIME_COMPANY1_TOKENS;
uint256 internal immutable _RELEASE_TIME_COMPANY2_TOKENS;
address constant internal _ADDRESS_1 = 0x3a3E5fe09A28218E34d5b0Fd2562738853f567C3;
address constant internal _ADDRESS_2 = 0x16d0865Ac2405e90fF4Aec7Fc6dd0200F9B2719c;
address constant internal _ADDRESS_3 = 0x770211caaB03028A4C45E19c7C68bB2284ca628A;
address constant internal _ADDRESS_4 = 0x89c7285fe5490a23C8bc32A99f99B984C53e0858;
address constant internal _ADDRESS_5 = 0x598388f9a2730E4bEb5645aDb2E208f27c98831D;
address constant internal _COMPANY_1 = 0x689df33f77EE4BAE8Aa4E48Ce366322C62cC3c31;
address constant internal _COMPANY_2 = 0x42eef6f9c1134140e0c31FB60C231fCE9565E228;
address constant internal _TEAM_1 = 0x19Afc08C5Aa632aD6fA5e157eD8e3ABCB53dE9e3;
address constant internal _TEAM_2 = 0xd4548F12889e5B668acBe2AF8a84Bbd090FC2313;
address constant internal _TEAM_3 = 0x8E5D186dF7632C1ed1191ddB83Ed0e761DA4059c;
address constant internal _TEAM_4 = 0xF88971abaf47546E30F816Fcdb27c3b115250083;
address constant internal _TEAM_5 = 0x0389C115CB588489394c6F6b57e99b851BCc77a5;
address[] internal teams = [_TEAM_1,_TEAM_2,_TEAM_3,_TEAM_4,_TEAM_5];
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_RELEASE_TIME_COMPANY1_TOKENS = block.timestamp + 365 days;
_RELEASE_TIME_COMPANY2_TOKENS = block.timestamp + 730 days;
_RELEASE_TIME_TEAM_TOKENS = block.timestamp + 365 days;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_initBalances();
}
function _setBalance(address addr,uint256 amount) private
{
amount =amount * 10 ** decimals();
_balances[addr] = amount;
emit Transfer(address(0), addr, amount);
}
function _initBalances() private{
_setBalance(_msgSender(), 15000000);
_setBalance(_ADDRESS_1, 10000000);
_setBalance(_ADDRESS_2, 10000000);
_setBalance(_ADDRESS_3, 10000000);
_setBalance(_ADDRESS_4, 10000000);
_setBalance(_ADDRESS_5, 10000000);
_setBalance(_COMPANY_1,10000000);
_setBalance(_COMPANY_2,10000000);
_setBalance(_TEAM_1,5250000);
_setBalance(_TEAM_2,3000000);
_setBalance(_TEAM_3,3000000);
_setBalance(_TEAM_4,3000000);
_setBalance(_TEAM_5,750000);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
abstract contract ERC20Burnable is Context,ERC20 {
function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
function burnFrom(address account, uint256 amount) public virtual {
uint256 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
}
abstract contract ERC20Snapshot is ERC20 {
using Arrays for uint256[];
using Counters for Counters.Counter;
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping (address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
Counters.Counter private _currentSnapshotId;
event Snapshot(uint256 id);
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId =_getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
function totalSupplyAt(uint256 snapshotId) public view virtual returns(uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots)
private view returns (bool, uint256)
{
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _currentSnapshotId.current(), "ERC20Snapshot: nonexistent id");
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
}
contract LEGSToken is ERC20, ERC20Burnable, ERC20Snapshot, Ownable {
constructor() ERC20("Coinlegs", "LEGS") {
_mint(msg.sender, 100000000 * 10 ** decimals());
}
function snapshot() public onlyOwner {
_snapshot();
}
function distributeTokens(address[] calldata addresses, uint256[] calldata values) external onlyOwner {
require(addresses.length == values.length, "Invalid Parameters");
address sender = owner();
uint len = addresses.length;
uint256 multiply = 10 ** decimals();
uint256 amount;
uint256 senderBalance ;
address recipient;
for (uint i = 0; i < len; i++) {
amount = values[i] * multiply;
senderBalance = _balances[sender];
recipient = addresses[i];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
}
function _beforeTokenTransfer(address from, address to, uint256 amount)
internal
override(ERC20, ERC20Snapshot)
{
bool locked=false;
if(from == _COMPANY_1){
locked = block.timestamp < _RELEASE_TIME_COMPANY1_TOKENS;
}
else if(from == _COMPANY_2){
locked = block.timestamp < _RELEASE_TIME_COMPANY2_TOKENS;
}
else{
for (uint8 index = 0; index < teams.length; index++) {
if(from == teams[index] ){
locked = block.timestamp < _RELEASE_TIME_TEAM_TOKENS;
break;
}
}
}
require(locked == false, "Account Locked");
super._beforeTokenTransfer(from, to, amount);
}
}
library Arrays {
function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
if (array.length == 0) {
return 0;
}
uint256 low = 0;
uint256 high = array.length;
while (low < high) {
uint256 mid = Math.average(low, high);
if (array[mid] > element) {
high = mid;
} else {
low = mid + 1;
}
}
if (low > 0 && array[low - 1] == element) {
return low - 1;
} else {
return low;
}
}
}
library Counters {
struct Counter {
uint256 _value;
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
library Math {
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function average(uint256 a, uint256 b) internal pure returns (uint256) {
return (a & b) + (a ^ b) / 2;
}
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b + (a % b == 0 ? 0 : 1);
}
}