- Contract name:
- VoteTokenImplementation
- Optimization enabled
- false
- Compiler version
- v0.5.1+commit.c8a2cb62
- EVM Version
- default
- Verified at
- 2023-07-07T20:10:38.337685Z
Contract source code
// File: @openzeppelin/upgrades/contracts/Initializable.sol
pragma solidity 0.5.1;
/**
* @title Initializable
*
* @dev Helper contract to support initializer functions. To use it, replace
* the constructor with a function that has the initializer modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*/
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
require(
initializing || isConstructor() || !initialized,
"Contract instance has already been initialized"
);
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
initialized = true;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
uint256 cs;
assembly {
cs := extcodesize(address)
}
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol
pragma solidity 0.5.1;
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see ERC20Detailed.
*/
interface IERC20 {
/**
* @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 recipient.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a Transfer event.
*/
function transfer(address recipient, 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.
*
* > 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 sender to recipient 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 sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @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
);
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20Detailed.sol
pragma solidity 0.5.1;
/**
* @dev Optional functions from the ERC20 standard.
*/
contract ERC20Detailed is Initializable, IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for name, symbol, and decimals. All three of
* these values are immutable: they can only be set once during
* construction.
*/
function initialize(
string memory name,
string memory symbol,
uint8 decimals
) public initializer {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if decimals equals 2, a balance of 505 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.
*
* > Note that 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 returns (uint8) {
return _decimals;
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/GSN/Context.sol
pragma solidity 0.5.1;
/*
* @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 not should not be accessed in such a direct
* manner, since when dealing with GSN 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.
*/
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, with should be used via inheritance.
constructor() internal {}
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol
pragma solidity 0.5.1;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* SafeMath restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's + operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's - operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's * operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's / operator. Note: this function uses a
* revert opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's % operator. This function uses a revert
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20.sol
pragma solidity 0.5.1;
/**
* @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 ERC20Mintable.
*
* *For a detailed writeup see our guide [How to implement supply
* mechanisms](https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226).*
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of 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 ERC20 is Initializable, Context, IERC20 {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
/**
* @dev See IERC20.totalSupply.
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev See IERC20.balanceOf.
*/
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
/**
* @dev See IERC20.transfer.
*
* Requirements:
*
* - recipient cannot be the zero address.
* - the caller must have a balance of at least amount.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(_msgSender(), to, value);
return true;
}
/**
* @dev See IERC20.allowance.
*/
function allowance(address owner, address spender)
public
view
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See IERC20.approve.
*
* Requirements:
*
* - spender cannot be the zero address.
*/
function approve(address spender, uint256 value) public returns (bool) {
_approve(_msgSender(), spender, value);
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;
*
* Requirements:
* - sender and recipient cannot be the zero address.
* - sender must have a balance of at least value.
* - the caller must have allowance for sender's tokens of at least
* amount.
*/
function transferFrom(
address from,
address to,
uint256 value
) public returns (bool) {
_transfer(from, to, value);
_approve(
from,
_msgSender(),
_allowances[from][_msgSender()].sub(value)
);
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
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(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
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(subtractedValue)
);
return true;
}
/**
* @dev Moves tokens amount from sender to recipient.
*
* This is 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:
*
* - sender cannot be the zero address.
* - recipient cannot be the zero address.
* - sender must have a balance of at least amount.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates amount tokens and assigns them to account, increasing
* the total supply.
*
* Emits a Transfer event with from set to the zero address.
*
* Requirements
*
* - to cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destoys amount tokens from account, 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 least amount tokens.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0), "ERC20: burn from the zero address");
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Sets amount as the allowance of spender over the owners tokens.
*
* This is 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 value
) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = value;
emit Approval(owner, spender, value);
}
/**
* @dev Destoys amount tokens from account.amount is then deducted
* from the caller's allowance.
*
* See _burn and _approve.
*/
function _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
_approve(
account,
_msgSender(),
_allowances[account][_msgSender()].sub(amount)
);
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/access/Roles.sol
pragma solidity 0.5.1;
/**
* @title Roles
* @dev Library for managing addresses assigned to a Role.
*/
library Roles {
struct Role {
mapping(address => bool) bearer;
}
/**
* @dev Give an account access to this role.
*/
function add(Role storage role, address account) internal {
require(!has(role, account), "Roles: account already has role");
role.bearer[account] = true;
}
/**
* @dev Remove an account's access to this role.
*/
function remove(Role storage role, address account) internal {
require(has(role, account), "Roles: account does not have role");
role.bearer[account] = false;
}
/**
* @dev Check if an account has this role.
* @return bool
*/
function has(Role storage role, address account)
internal
view
returns (bool)
{
require(account != address(0), "Roles: account is the zero address");
return role.bearer[account];
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/access/roles/MinterRole.sol
pragma solidity 0.5.1;
contract MinterRole is Initializable, Context {
using Roles for Roles.Role;
event MinterAdded(address indexed account);
event MinterRemoved(address indexed account);
Roles.Role private _minters;
function initialize(address sender) public initializer {
if (!isMinter(sender)) {
_addMinter(sender);
}
}
modifier onlyMinter() {
require(
isMinter(_msgSender()),
"MinterRole: caller does not have the Minter role"
);
_;
}
function isMinter(address account) public view returns (bool) {
return _minters.has(account);
}
function addMinter(address account) public onlyMinter {
_addMinter(account);
}
function renounceMinter() public {
_removeMinter(_msgSender());
}
function _addMinter(address account) internal {
_minters.add(account);
emit MinterAdded(account);
}
function _removeMinter(address account) internal {
_minters.remove(account);
emit MinterRemoved(account);
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20Mintable.sol
pragma solidity 0.5.1;
/**
* @dev Extension of ERC20 that adds a set of accounts with the MinterRole,
* which have permission to mint (create) new tokens as they see fit.
*
* At construction, the deployer of the contract is the only minter.
*/
contract ERC20Mintable is Initializable, ERC20, MinterRole {
function initialize(address sender) public initializer {
MinterRole.initialize(sender);
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/access/roles/PauserRole.sol
pragma solidity 0.5.1;
contract PauserRole is Initializable, Context {
using Roles for Roles.Role;
event PauserAdded(address indexed account);
event PauserRemoved(address indexed account);
Roles.Role private _pausers;
function initialize(address sender) public initializer {
if (!isPauser(sender)) {
_addPauser(sender);
}
}
modifier onlyPauser() {
require(
isPauser(_msgSender()),
"PauserRole: caller does not have the Pauser role"
);
_;
}
function isPauser(address account) public view returns (bool) {
return _pausers.has(account);
}
function addPauser(address account) public onlyPauser {
_addPauser(account);
}
function renouncePauser() public {
_removePauser(_msgSender());
}
function _addPauser(address account) internal {
_pausers.add(account);
emit PauserAdded(account);
}
function _removePauser(address account) internal {
_pausers.remove(account);
emit PauserRemoved(account);
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/lifecycle/Pausable.sol
pragma solidity 0.5.1;
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers whenNotPaused and whenPaused, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
contract Pausable is Initializable, Context, PauserRole {
/**
* @dev Emitted when the pause is triggered by a pauser (account).
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by a pauser (account).
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state. Assigns the Pauser role
* to the deployer.
*/
function initialize(address sender) public initializer {
PauserRole.initialize(sender);
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!_paused, "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(_paused, "Pausable: not paused");
_;
}
/**
* @dev Called by a pauser to pause, triggers stopped state.
*/
function pause() public onlyPauser whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Called by a pauser to unpause, returns to normal state.
*/
function unpause() public onlyPauser whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20Pausable.sol
pragma solidity 0.5.1;
/**
* @title Pausable token
* @dev ERC20 modified with pausable transfers.
*/
contract ERC20Pausable is Initializable, ERC20, Pausable {
function initialize(address sender) public initializer {
Pausable.initialize(sender);
}
function transfer(address to, uint256 value)
public
whenNotPaused
returns (bool)
{
return super.transfer(to, value);
}
function transferFrom(
address from,
address to,
uint256 value
) public whenNotPaused returns (bool) {
return super.transferFrom(from, to, value);
}
function approve(address spender, uint256 value)
public
whenNotPaused
returns (bool)
{
return super.approve(spender, value);
}
function increaseAllowance(address spender, uint256 addedValue)
public
whenNotPaused
returns (bool)
{
return super.increaseAllowance(spender, addedValue);
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
whenNotPaused
returns (bool)
{
return super.decreaseAllowance(spender, subtractedValue);
}
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/StandaloneERC20.sol
pragma solidity 0.5.1;
/**
* @title Standard ERC20 token, with minting and pause functionality.
*
*/
contract StandaloneERC20 is
Initializable,
ERC20Detailed,
ERC20Mintable,
ERC20Pausable
{
function initialize(
string memory name,
string memory symbol,
uint8 decimals,
uint256 initialSupply,
address initialHolder,
address[] memory minters,
address[] memory pausers
) public initializer {
ERC20Detailed.initialize(name, symbol, decimals);
// Mint the initial supply
_mint(initialHolder, initialSupply);
// Initialize the minter and pauser roles, and renounce them
ERC20Mintable.initialize(address(this));
_removeMinter(address(this));
ERC20Pausable.initialize(address(this));
_removePauser(address(this));
// Add the requested minters and pausers (this can be done after renouncing since
// these are the internal calls)
for (uint256 i = 0; i < minters.length; ++i) {
_addMinter(minters[i]);
}
for (uint256 i = 0; i < pausers.length; ++i) {
_addPauser(pausers[i]);
}
}
function initialize(
string memory name,
string memory symbol,
uint8 decimals,
address[] memory minters,
address[] memory pausers
) public initializer {
ERC20Detailed.initialize(name, symbol, decimals);
// Initialize the minter and pauser roles, and renounce them
ERC20Mintable.initialize(address(this));
_removeMinter(address(this));
ERC20Pausable.initialize(address(this));
_removePauser(address(this));
// Add the requested minters and pausers (this can be done after renouncing since
// these are the internal calls)
for (uint256 i = 0; i < minters.length; ++i) {
_addMinter(minters[i]);
}
for (uint256 i = 0; i < pausers.length; ++i) {
_addPauser(pausers[i]);
}
}
}
// File: contracts/ArrayListLib.sol
pragma solidity 0.5.1;
library ArrayListLib {
struct ListItem {
uint256 index;
address item;
}
struct StoredList {
mapping(address => ListItem) storageMap;
bool initialized;
address[] storageList;
}
function add(StoredList storage self, address _address) internal {
if (!exists(self, _address)) {
ListItem memory item = ListItem(
self.storageList.length + 1,
_address
);
self.storageList.push(_address);
self.storageMap[_address] = item;
}
}
function exists(StoredList storage self, address _address)
internal
view
returns (bool)
{
return self.storageMap[_address].index > 0;
}
function remove(StoredList storage self, address _address) internal {
if (exists(self, _address)) {
uint256 lastIndex = self.storageList.length;
if (lastIndex != self.storageMap[_address].index) {
self.storageMap[self.storageList[lastIndex - 1]].index = self
.storageMap[_address]
.index;
self.storageList[self.storageMap[_address].index - 1] = self
.storageList[lastIndex - 1];
}
self.storageList.length--;
}
delete self.storageMap[_address];
}
function getItems(StoredList storage self)
internal
view
returns (address[] memory items)
{
return self.storageList;
}
}
// File: contracts/VoteTokenImplementation.sol
pragma solidity 0.5.1;
//import './Survey.sol';
contract Survey {
function updateQuorum(
uint256 _fromNewBalance,
uint256 _fromOldBalance,
uint256 _toNewBalance,
uint256 _toOldBalance
) public;
function adjustTotalWeights(address _owner, bool _exclude) external;
}
contract VoteTokenImplementation is Initializable, StandaloneERC20 {
using ArrayListLib for ArrayListLib.StoredList;
ArrayListLib.StoredList private surveys;
ArrayListLib.StoredList private ownersList;
ArrayListLib.StoredList private exclusionList;
address private owner;
bool private initializedByProxy;
modifier onlyOwner {
require(msg.sender == owner, 'Not allowed to call this method');
_;
}
constructor() public {
initializedByProxy = true;
}
function initialize(
string memory name, string memory symbol, uint8 decimals, uint256 initialSupply, address initialHolder,
address[] memory minters, address[] memory pausers
) public initializer {
require(!initializedByProxy, "already initialized");
owner = initialHolder;
exclusionList.add(initialHolder);
StandaloneERC20.initialize(name, symbol, decimals, initialSupply, initialHolder, minters, pausers);
}
function transferFrom(address sender, address recipient, uint256 amount)
public
returns (bool)
{
bool transferResult = super.transferFrom(sender, recipient, amount);
if(
balanceOf(recipient) > 0 && //has positive balance
!ownersList.exists(recipient) //not added already to owners list
) {
ownersList.add(recipient);
}
//sender's balance is 0, taking it out from owners' list
if(balanceOf(sender) == 0 && ownersList.exists(sender)) {
ownersList.remove(sender);
}
return transferResult;
}
function transfer(address recipient, uint256 amount) public returns (bool) {
address _from = msg.sender;
bool transferResult = super.transfer(recipient, amount);
if(
balanceOf(recipient) > 0 && //has positive balance
!ownersList.exists(recipient) && //not added already to owners list
recipient != owner //not adding the owner to this list
) {
ownersList.add(recipient);
}
//sender's balance is 0, taking it out from owners' list
if(balanceOf(_from) == 0 && ownersList.exists(_from)) {
ownersList.remove(_from);
}
return transferResult;
}
function registerSurvey(address _survey) public {
surveys.add(_survey);
}
function unregisterSurvey(address _survey) public {
surveys.remove(_survey);
}
function isSurveyRegistered(address _survey) public view returns (bool) {
return surveys.exists(_survey);
}
function batchTransfer(address payable _from, address[] memory _to, uint256[] memory _values) public {
uint256 toLength = _to.length;
require(toLength == _values.length, "Batches counters do not match");
for (uint index = 0; index < toLength; index++) {
if (_from == msg.sender) {
transfer(_to[index], _values[index]);
} else {
transferFrom(_from, _to[index], _values[index]);
}
}
}
function getCirculatingSupply(uint256 offset, uint256 count, uint256 cap) public view returns (uint256) {
uint256 balance;
uint256 circulatingSupply;
uint256 totalCount;
uint256 adjustSupply;
if (offset >= ownersList.storageList.length) {
return 0;
}
totalCount = offset + count > ownersList.storageList.length ? ownersList.storageList.length : offset + count;
for (uint256 index = offset; index < totalCount; index++) {
balance = balanceOf(ownersList.storageList[index]);
adjustSupply = cap > balance ? balance : cap;
circulatingSupply = circulatingSupply + adjustSupply;
}
return circulatingSupply;
}
function getOwnersCount() external view returns (uint) {
return ownersList.storageList.length;
}
function getOwner() public view returns (address tokenOwner) {
return owner;
}
function burn(address account, uint256 value) public onlyOwner {
require(account == owner, 'Not allowed to burn tokens from non-owner');
super._burn(account, value);
}
function version() public pure returns (uint) {
return 8;
}
}
Contract ABI
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e":"bool","name":""}],"name":"transfer","inputs":[{"type":"address","name":"recipient"},{"type":"uint256","name":"amount"}],"constant":false},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":""}],"name":"transferFrom","inputs":[{"type":"address","name":"sender"},{"type":"address","name":"recipient"},{"type":"uint256","name":"amount"}],"constant":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"unpause","inputs":[],"constant":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"unregisterSurvey","inputs":[{"type":"address","name":"_survey"}],"constant":false},{"type":"function","stateMutability":"pure","outputs":[{"type":"uint256","name":""}],"name":"version","inputs":[],"constant":true},{"type":"event","name":"Approval","inputs":[{"type":"address","name":"owner","indexed":true},{"type":"address","name":"spender","indexed":true},{"type":"uint256","name":"value","indexed":false}],"anonymous":false},{"type":"event","name":"MinterAdded","inputs":[{"type":"address","name":"account","indexed":true}],"anonymous":false},{"type":"event","name":"MinterRemoved","inputs":[{"type":"address","name":"account","indexed":true}],"anonymous":false},{"type":"event","name":"Paused","inputs":[{"type":"address","name":"account","indexed":false}],"anonymous":false},{"type":"event","name":"PauserAdded","inputs":[{"type":"address","name":"account","indexed":true}],"anonymous":false},{"type":"event","name":"PauserRemoved","inputs":[{"type":"address","name":"account","indexed":true}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"type":"address","name":"from","indexed":true},{"type":"address","name":"to","indexed":true},{"type":"uint256","name":"value","indexed":false}],"anonymous":false},{"type":"event","name":"Unpaused","inputs":[{"type":"address","name":"account","indexed":false}],"anonymous":false}]
Deployed ByteCode
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