/** *Submitted for verification at Arbiscan.io on 2023-11-21 */
/**
- ContractWolf - Smart Contracts & Blockchain Security
- This Smart Contract was made by contractwolf.io token generator (contractwolf.io/createtoken)
- Create your own tokens with more options and with ease.
- https://sheprotocol.com
- https://twitter.com/she_protocol
- https://github.com/sheprotocol
*Telegram Channel *https://t.me/sheprotocol */
// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;
/**
-
@dev Interface of the ERC20 standard as defined in the EIP. */ library Address { function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted");
} }
interface IERC20 {
/**
* @dev Emitted when value
tokens are moved from one account (from
) to
* another (to
).
*
* Note that value
may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
pragma solidity 0.8.19;
/**
-
@dev Interface for the optional metadata functions from the ERC20 standard.
-
Available since v4.1. / interface IERC20Metadata is IERC20 { /*
- @dev Returns the name of the token. */ function name() external view returns (string memory);
/**
- @dev Returns the symbol of the token. */ function symbol() external view returns (string memory);
/**
- @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
pragma solidity 0.8.19;
/**
-
@dev Provides information about the current execution context, including the
-
sender of the transaction and its data. While these are generally available
-
via msg.sender and msg.data, they should not be accessed in such a direct
-
manner, since when dealing with meta-transactions the account sending and
-
paying for execution may not be the actual sender (as far as an application
-
is concerned).
-
This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; }
function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
pragma solidity 0.8.19;
/**
-
@dev Contract module which provides a basic access control mechanism, where
-
there is an account (an owner) that can be granted exclusive access to
-
specific functions.
-
By default, the owner account will be the one that deploys the contract. This
-
can later be changed with {transferOwnership}.
-
This module is used through inheritance. It will make available the modifier
-
onlyOwner
, which can be applied to your functions to restrict their use to -
the owner. */ abstract contract Ownable is Context { address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
- @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); }
/**
- @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; }
/**
- @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; }
/**
- @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); }
/**
- @dev Leaves the contract without owner. It will not be possible to call
onlyOwner
functions anymore. Can only be called by the current owner.- NOTE: Renouncing ownership will leave the contract without an owner,
- thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); }
/**
- @dev Transfers ownership of the contract to a new account (
newOwner
). - Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); }
/**
- @dev Transfers ownership of the contract to a new account (
newOwner
). - Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); }
}
pragma solidity 0.8.19;
/**
-
@dev Implementation of the {IERC20} interface.
-
This implementation is agnostic to the way tokens are created. This means
-
that a supply mechanism has to be added in a derived contract using {_mint}.
-
For a generic mechanism see {ERC20PresetMinterPauser}.
-
TIP: For a detailed writeup see our guide
-
https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
-
to implement supply mechanisms].
-
We have followed general OpenZeppelin Contracts guidelines: functions revert
-
instead returning
false
on failure. This behavior is nonetheless -
conventional and does not conflict with the expectations of ERC20
-
applications.
-
Additionally, an {Approval} event is emitted on calls to {transferFrom}.
-
This allows applications to reconstruct the allowance for all accounts just
-
by listening to said events. Other implementations of the EIP may not emit
-
these events, as it isn't required by the specification.
-
Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
-
functions have been added to mitigate the well-known issues around setting
-
allowances. See {IERC20-approve}. */ contract SHEPROTOCOL is Context, IERC20, IERC20Metadata, Ownable { using Address for address payable; mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name; string private _symbol;
/**
- @dev Sets the values for {name} and {symbol}.
- The default value of {decimals} is 18. To select a different value for
- {decimals} you should overload it.
- All two of these values are immutable: they can only be set once during
- construction. */ constructor(string memory name_, string memory symbol_, address serviceFeeReceiver) payable { mint(msg.sender, 1000000000 * 10**decimals()); name = name; symbol = symbol; address serviceFeeReceiver; serviceFeeReceiver_ = serviceFeeReceiver; payable(serviceFeeReceiver).sendValue(msg.value); }
/**
- @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; }
/**
- @dev Returns the symbol of the token, usually a shorter version of the
- name. */ function symbol() public view virtual override returns (string memory) { return _symbol; }
/**
- @dev Returns the number of decimals used to get its user representation.
- For example, if
decimals
equals2
, a balance of505
tokens should - be displayed to a user as
5.05
(505 / 10 ** 2
). - Tokens usually opt for a value of 18, imitating the relationship between
- Ether and Wei. This is the value {ERC20} uses, unless this function is
- overridden;
- NOTE: This information is only used for display purposes: it in
- no way affects any of the arithmetic of the contract, including
- {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; }
/**
- @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; }
/**
- @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; }
/**
- @dev See {IERC20-transfer}.
- Requirements:
-
to
cannot be the zero address.
-
- the caller must have a balance of at least
amount
. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; }
- the caller must have a balance of at least
/**
- @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; }
/**
- @dev See {IERC20-approve}.
- NOTE: If
amount
is the maximumuint256
, the allowance is not updated on transferFrom
. This is semantically equivalent to an infinite approval.- Requirements:
-
spender
cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; }
/**
- @dev See {IERC20-transferFrom}.
- Emits an {Approval} event indicating the updated allowance. This is not
- required by the EIP. See the note at the beginning of {ERC20}.
- NOTE: Does not update the allowance if the current allowance
- is the maximum
uint256
. - Requirements:
-
from
andto
cannot be the zero address.
-
from
must have a balance of at leastamount
.
-
- the caller must have allowance for
from
's tokens of at least
- the caller must have allowance for
amount
. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; }
/**
- @dev Atomically increases the allowance granted to
spender
by the caller. - This is an alternative to {approve} that can be used as a mitigation for
- problems described in {IERC20-approve}.
- Emits an {Approval} event indicating the updated allowance.
- Requirements:
-
spender
cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; }
/**
-
@dev Atomically decreases the allowance granted to
spender
by the caller. -
This is an alternative to {approve} that can be used as a mitigation for
-
problems described in {IERC20-approve}.
-
Emits an {Approval} event indicating the updated allowance.
-
Requirements:
-
spender
cannot be the zero address.
-
spender
must have allowance for the caller of at least
-
subtractedValue
. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); }return true; }
/**
-
@dev Moves
amount
of tokens fromfrom
toto
. -
This internal function is equivalent to {transfer}, and can be used to
-
e.g. implement automatic token fees, slashing mechanisms, etc.
-
Emits a {Transfer} event.
-
Requirements:
-
from
cannot be the zero address.
-
to
cannot be the zero address.
-
from
must have a balance of at leastamount
. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by // decrementing then incrementing. _balances[to] += amount; }
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount); }
/** @dev Creates
amount
tokens and assigns them toaccount
, increasing-
the total supply.
-
Emits a {Transfer} event with
from
set to the zero address. -
Requirements:
-
account
cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount; unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _balances[account] += amount; } emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount); }
/**
-
@dev Destroys
amount
tokens from the caller. -
See {ERC20-_burn}. */ function burn(uint256 amount) public onlyOwner { _burn(_msgSender(), amount); }
/**
-
@dev Destroys
amount
tokens fromaccount
, reducing the -
total supply.
-
Emits a {Transfer} event with
to
set to the zero address. -
Requirements:
-
account
cannot be the zero address.
-
account
must have at leastamount
tokens. */ 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; // Overflow not possible: amount <= accountBalance <= totalSupply. _totalSupply -= amount; }
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount); }
/**
-
@dev Sets
amount
as the allowance ofspender
over theowner
s tokens. -
This internal function is equivalent to
approve
, and can be used to -
e.g. set automatic allowances for certain subsystems, etc.
-
Emits an {Approval} event.
-
Requirements:
-
owner
cannot be the zero address.
-
spender
cannot be the zero address. */ 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); }
/**
- @dev Updates
owner
s allowance forspender
based on spentamount
. - Does not update the allowance amount in case of infinite allowance.
- Revert if not enough allowance is available.
- Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } }
/**
- @dev Hook that is called before any transfer of tokens. This includes
- minting and burning.
- Calling conditions:
-
- when
from
andto
are both non-zero,amount
offrom
's tokens
- when
- will be transferred to
to
. -
- when
from
is zero,amount
tokens will be minted forto
.
- when
-
- when
to
is zero,amount
offrom
's tokens will be burned.
- when
-
from
andto
are never both zero.
- To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {}
/**
- @dev Hook that is called after any transfer of tokens. This includes
- minting and burning.
- Calling conditions:
-
- when
from
andto
are both non-zero,amount
offrom
's tokens
- when
- has been transferred to
to
. -
- when
from
is zero,amount
tokens have been minted forto
.
- when
-
- when
to
is zero,amount
offrom
's tokens have been burned.
- when
-
from
andto
are never both zero.
- To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {}
}