REVV

0x557b933a7c2c45672b610f8954a3deb39a51a8ca Copy

ERC20

This contract is an ERC20 token.

Name REVV

Symbol REVV

Decimals 18

Total Supply 3,000,000,000 REVV

About

REVV (REVV) is a cryptocurrency and operates on the Ethereum platform. REVV has a current supply of 3,000,000,000 with 278,270,642.27439255 in circulation. The last known price of REVV is 0.1215789 USD and is down -15.55 over the last 24 hours. It is currently trading on 32 active market(s) with $2,367,641.48 traded over the last 24 hours. More information can be found at https://www.revvmotorsport.com/.

Stats

Public Functions 14

Event Types 4

Code Size 40,700 bytes

Events (4)

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

Transfer Event

Parameters

_from	address
_to	address
_value	uint256

WhitelistedOperator Event

Parameters

operator	address
enabled	bool

Constants (4)

name Constant

string

REVV

symbol Constant

string

REVV

decimals Constant

uint8

_INTERFACE_ID_ERC165 Constant

bytes4

0x01ffc9a7

State Variables (6)

_balances Variable

mapping(address => uint256)

Internal Variable

_allowances Variable

mapping(address => mapping(address => uint256))

Internal Variable

_totalSupply Variable

uint256

Internal Variable

_supportedInterfaces Variable

mapping(bytes4 => bool)

Internal Variable

_whitelistedOperators Variable

mapping(address => bool)

Internal Variable

_owner Variable

address

Internal Variable

Functions Expand All Collapse All

owner

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

function owner() public view returns (address) {
  return _owner;
}

renounceOwnership

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

_owner must be equal to the result of calling _msgSender

Source Code

function renounceOwnership() public virtual onlyOwner {
  emit OwnershipTransferred(_owner, address(0));
  _owner = address(0);
}

transferOwnership

Parameters

Name	Type
newOwner	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

_owner must be equal to the result of calling _msgSender

Requirements

newOwner must not be equal to UNKNOWN VALUE

Source Code

function transferOwnership(address newOwner) public virtual onlyOwner {
  require(newOwner != address(0), "Ownable: new owner is the zero address");
  emit OwnershipTransferred(_owner, newOwner);
  _owner = newOwner;
}

whitelistOperator

Parameters

Name	Type
operator	address
enabled	bool

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

_owner must be equal to the result of calling _msgSender

Source Code

function whitelistOperator(address operator, bool enabled) external onlyOwner {
  _whitelistedOperators[operator] = enabled;
  emit WhitelistedOperator(operator, enabled);
}

isOperator

Parameters

Name	Type
who	address

Properties

Visibility public

Mutability view

Source Code

function isOperator(address who) public view returns (bool) {
  return _whitelistedOperators[who];
}

supportsInterface

Parameters

Name	Type
interfaceId	bytes4

Properties

Visibility public

Mutability view

Source Code

function supportsInterface(bytes4 interfaceId)
  public
  view
  override
  returns (bool)
{
  return _supportedInterfaces[interfaceId];
}

totalSupply

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

function totalSupply() public view override returns (uint256) {
  return _totalSupply;
}

balanceOf

Parameters

Name	Type
account	address

Properties

Visibility public

Mutability view

Source Code

function balanceOf(address account) public view override returns (uint256) {
  return _balances[account];
}

transfer

Parameters

Name	Type
recipient	address
amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

recipient must not be equal to UNKNOWN VALUE

Source Code

function transfer(address recipient, uint256 amount)
  public
  virtual
  override
  returns (bool)
{
  _transfer(_msgSender(), recipient, amount);
  return true;
}

allowance

Parameters

Name	Type
owner	address
spender	address

Properties

Visibility public

Mutability view

Source Code

function allowance(address owner, address spender)
  public
  view
  override
  returns (uint256)
{
  if (isOperator(spender)) {
    // allow the front-end to determine whether or not an approval is
    // necessary, given that the whitelisted operator status of the
    // spender is unknown. A call to WhitelistedOperators::isOperator()
    // is more direct, but we want to expose a mechanism by which to
    // check through the ERC20 interface.
    return type(uint256).max;
  } else {
    return super.allowance(owner, spender);
  }
}

approve

Parameters

Name	Type
spender	address
amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

function approve(address spender, uint256 amount)
  public
  virtual
  override
  returns (bool)
{
  _approve(_msgSender(), spender, amount);
  return true;
}

transferFrom

Parameters

Name	Type
sender	address
recipient	address
amount	uint256

Properties

Visibility public

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

recipient must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address sender,
  address recipient,
  uint256 amount
) public override returns (bool) {
  address msgSender = _msgSender();

  // bypass the internal allowance manipulation and checks for the
  // whitelisted operator (i.e. _msgSender()). as a side-effect, the
  // 'Approval' event will not be emitted since the allowance was not
  // updated.
  if (!isOperator(msgSender)) {
    _approve(sender, msgSender, allowance(sender, msgSender).sub(amount));
  }

  _transfer(sender, recipient, amount);
  return true;
}

increaseAllowance

Parameters

Name	Type
spender	address
addedValue	uint256

Properties

Visibility public

Mutability transaction

Source Code

function increaseAllowance(address spender, uint256 addedValue)
  public
  override
  returns (bool)
{
  if (isOperator(spender)) {
    // bypass the internal allowance manipulation and checks for the
    // whitelisted operator (i.e. spender). as a side-effect, the
    // 'Approval' event will not be emitted since the allowance was not
    // updated.
    return true;
  } else {
    return super.increaseAllowance(spender, addedValue);
  }
}

decreaseAllowance

Parameters

Name	Type
spender	address
subtractedValue	uint256

Properties

Visibility public

Mutability transaction

Source Code

function decreaseAllowance(address spender, uint256 subtractedValue)
  public
  override
  returns (bool)
{
  if (isOperator(spender)) {
    // bypass the internal allowance manipulation and checks for the
    // whitelisted operator (i.e. spender). as a side-effect, the
    // 'Approval' event will not be emitted since the allowance was not
    // updated.
    return true;
  } else {
    return super.decreaseAllowance(spender, subtractedValue);
  }
}

Internal Functions Expand All Collapse All

Internal functions are parts of the contract that can't be used directly, but instead are used by the public functions listed above.

internal ERC20WithOperators._approve

Parameters

Name	Type
owner	address
spender	address
value	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function _approve(
  address owner,
  address spender,
  uint256 value
) internal override {
  if (isOperator(spender)) {
    // bypass the internal allowance manipulation and checks for the
    // whitelisted operator (i.e. spender). as a side-effect, the
    // 'Approval' event will not be emitted since the allowance was not
    // updated.
    return;
  } else {
    super._approve(owner, spender, value);
  }
}

internal ERC20.constructor

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability transaction

Requirements

undefined.interfaceId must not be equal to 0xffffffff

Source Code

constructor() internal {
  _registerInterface(type(IERC20).interfaceId);
  _registerInterface(type(IERC20Detailed).interfaceId);
  _registerInterface(type(IERC20Allowance).interfaceId);

  // ERC20Name interfaceId: bytes4(keccak256("name()"))
  _registerInterface(0x06fdde03);
  // ERC20Symbol interfaceId: bytes4(keccak256("symbol()"))
  _registerInterface(0x95d89b41);
  // ERC20Decimals interfaceId: bytes4(keccak256("decimals()"))
  _registerInterface(0x313ce567);
}

internal ERC20._transfer

Parameters

Name	Type
sender	address
recipient	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

recipient must not be equal to UNKNOWN VALUE

Source Code

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);

  _balances[sender] = _balances[sender].sub(
    amount,
    "ERC20: transfer amount exceeds balance"
  );
  _balances[recipient] = _balances[recipient].add(amount);
  emit Transfer(sender, recipient, amount);
}

internal ERC20._mint

Parameters

Name	Type
account	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

account must not be equal to UNKNOWN VALUE

Source Code

function _mint(address account, uint256 amount) internal virtual {
  require(account != address(0), "ERC20: mint to the zero address");

  _beforeTokenTransfer(address(0), account, amount);

  _totalSupply = _totalSupply.add(amount);
  _balances[account] = _balances[account].add(amount);
  emit Transfer(address(0), account, amount);
}

internal ERC20._burn

Parameters

Name	Type
account	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

account must not be equal to UNKNOWN VALUE

Source Code

function _burn(address account, uint256 amount) internal virtual {
  require(account != address(0), "ERC20: burn from the zero address");

  _beforeTokenTransfer(account, address(0), amount);

  _balances[account] = _balances[account].sub(
    amount,
    "ERC20: burn amount exceeds balance"
  );
  _totalSupply = _totalSupply.sub(amount);
  emit Transfer(account, address(0), amount);
}

internal ERC20._approve

Parameters

Name	Type
owner	address
spender	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Requirements

the result of calling _msgSender must not be equal to UNKNOWN VALUE

spender must not be equal to UNKNOWN VALUE

Source Code

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);
}

internal ERC20._beforeTokenTransfer

Parameters

Name	Type
from	address
to	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function _beforeTokenTransfer(
  address from,
  address to,
  uint256 amount
) internal virtual {}

internal ERC165.constructor

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability transaction

Requirements

undefined.interfaceId must not be equal to 0xffffffff

Source Code

constructor() internal {
  // Derived contracts need only register support for their own interfaces,
  // we register support for ERC165 itself here
  _registerInterface(_INTERFACE_ID_ERC165);
}

internal ERC165._registerInterface

Parameters

Name	Type
interfaceId	bytes4

Properties

Visibility internal

Mutability transaction

Requirements

undefined.interfaceId must not be equal to 0xffffffff

Source Code

function _registerInterface(bytes4 interfaceId) internal virtual {
  require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
  _supportedInterfaces[interfaceId] = true;
}

internal Context._msgSender

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgSender() internal view virtual returns (address payable) {
  return msg.sender;
}

internal Context._msgData

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgData() internal view virtual returns (bytes memory) {
  this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
  return msg.data;
}

internal Ownable.constructor

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability transaction

Source Code

constructor() internal {
  address msgSender = _msgSender();
  _owner = msgSender;
  emit OwnershipTransferred(address(0), msgSender);
}

internal Context._msgSender

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgSender() internal view virtual returns (address payable) {
  return msg.sender;
}

internal Context._msgData

Parameters

This function has no parameters.

Properties

Visibility internal

Mutability view

Source Code

function _msgData() internal view virtual returns (bytes memory) {
  this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
  return msg.data;
}

REVV

ERC20

About link description

Stats

Events (4) keyboard_arrow_up

Approval Event

Parameters help Event parameters list the data that an event contains.

OwnershipTransferred Event

Parameters help Event parameters list the data that an event contains.

Transfer Event

Parameters help Event parameters list the data that an event contains.

WhitelistedOperator Event

Parameters help Event parameters list the data that an event contains.

Constants (4) keyboard_arrow_up

name Constant

symbol Constant

decimals Constant

_INTERFACE_ID_ERC165 Constant

State Variables (6) keyboard_arrow_up

_balances Variable

_allowances Variable

_totalSupply Variable

_supportedInterfaces Variable

_whitelistedOperators Variable

_owner Variable

Functions Expand All Collapse All

owner keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

renounceOwnership keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyOwner checks for the following:

Source Code

transferOwnership keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyOwner checks for the following:

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

whitelistOperator keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyOwner checks for the following:

Source Code

isOperator keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

supportsInterface keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

totalSupply keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

balanceOf keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

transfer keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

allowance keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

approve keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

transferFrom keyboard_arrow_up

About

Events (4)

Parameters

Parameters

Parameters

Parameters

Constants (4)

State Variables (6)

owner

Parameters

renounceOwnership

Parameters

Modifiers

transferOwnership

Parameters

Modifiers

Requirements

whitelistOperator

Parameters

Modifiers

isOperator

Parameters

supportsInterface

Parameters

totalSupply

Parameters

balanceOf

Parameters

transfer

Parameters

Requirements

allowance

Parameters

approve

Parameters

Requirements

transferFrom

Parameters

Requirements

increaseAllowance

Parameters

decreaseAllowance

Parameters

internal ERC20WithOperators._approve

Parameters

internal ERC20.constructor

Parameters

Requirements

internal ERC20._transfer

Parameters

Requirements

internal ERC20._mint

Parameters

Requirements

internal ERC20._burn

Parameters

Requirements

internal ERC20._approve

Parameters

Requirements

internal ERC20._beforeTokenTransfer

Parameters

internal ERC165.constructor

Parameters

Requirements

internal ERC165._registerInterface

Parameters

Requirements

internal Context._msgSender

Parameters

internal Context._msgData

Parameters

internal Ownable.constructor

Parameters

internal Context._msgSender