Aragon Network Token
ERC20
This contract is an ERC20 token.
Name
Aragon Network Token
Symbol
ANT
Decimals
18
Total Supply
39,609,524 ANT
About
Stats
Public Functions
27
Event Types
4
Code Size
35,174 bytes
Events (4) keyboard_arrow_up
State Variables (16) keyboard_arrow_up
Functions
changeController keyboard_arrow_up
Modifiers help
onlyController checks for the following:
Source Code
function changeController(address _newController) onlyController {
controller = _newController;
}
totalSupply keyboard_arrow_up
balanceOf keyboard_arrow_up
allowance keyboard_arrow_up
transfer keyboard_arrow_up
Modifiers help
canTransfer checks for the following:
_value
must be less than or equal to
the result of calling spendableBalanceOf with the sender's address
Requirements help
Source Code
function transfer(address _to, uint256 _value)
public
canTransfer(msg.sender, _value)
returns (bool success)
{
return super.transfer(_to, _value);
}
transferFrom keyboard_arrow_up
Modifiers help
canTransfer checks for the following:
_value
must be less than or equal to
the result of calling spendableBalanceOf with the sender's address
Requirements help
Source Code
function transferFrom(
address _from,
address _to,
uint256 _value
) public canTransfer(_from, _value) returns (bool success) {
return super.transferFrom(_from, _to, _value);
}
approve keyboard_arrow_up
transfer keyboard_arrow_up
Requirements help
Source Code
function transfer(address _to, uint256 _amount) returns (bool success) {
if (!transfersEnabled) throw;
return doTransfer(msg.sender, _to, _amount);
}
transferFrom keyboard_arrow_up
Requirements help
Source Code
function transferFrom(
address _from,
address _to,
uint256 _amount
) returns (bool success) {
// The controller of this contract can move tokens around at will,
// this is important to recognize! Confirm that you trust the
// controller of this contract, which in most situations should be
// another open source smart contract or 0x0
if (msg.sender != controller) {
if (!transfersEnabled) throw;
// The standard ERC 20 transferFrom functionality
if (allowed[_from][msg.sender] < _amount) throw;
allowed[_from][msg.sender] -= _amount;
}
return doTransfer(_from, _to, _amount);
}
approve keyboard_arrow_up
Requirements help
One or more of the following:
Source Code
function approve(address _spender, uint256 _amount) returns (bool success) {
if (!transfersEnabled) throw;
// To change the approve amount you first have to reduce the addresses´
// allowance to zero by calling `approve(_spender,0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
if ((_amount != 0) && (allowed[msg.sender][_spender] != 0)) throw;
// Alerts the token controller of the approve function call
if (isContract(controller)) {
if (!Controller(controller).onApprove(msg.sender, _spender, _amount)) throw;
}
allowed[msg.sender][_spender] = _amount;
Approval(msg.sender, _spender, _amount);
return true;
}
approveAndCall keyboard_arrow_up
Requirements help
One or more of the following:
Source Code
function approveAndCall(
address _spender,
uint256 _amount,
bytes _extraData
) returns (bool success) {
approve(_spender, _amount);
// This portion is copied from ConsenSys's Standard Token Contract. It
// calls the receiveApproval function that is part of the contract that
// is being approved (`_spender`). The function should look like:
// `receiveApproval(address _from, uint256 _amount, address
// _tokenContract, bytes _extraData)` It is assumed that the call
// *should* succeed, otherwise the plain vanilla approve would be used
ApproveAndCallReceiver(_spender).receiveApproval(
msg.sender,
_amount,
this,
_extraData
);
return true;
}
balanceOfAt keyboard_arrow_up
Source Code
function balanceOfAt(address _owner, uint256 _blockNumber)
constant
returns (uint256)
{
// These next few lines are used when the balance of the token is
// requested before a check point was ever created for this token, it
// requires that the `parentToken.balanceOfAt` be queried at the
// genesis block for that token as this contains initial balance of
// this token
if (
(balances[_owner].length == 0) ||
(balances[_owner][0].fromBlock > _blockNumber)
) {
if (address(parentToken) != 0) {
return
parentToken.balanceOfAt(_owner, min(_blockNumber, parentSnapShotBlock));
} else {
// Has no parent
return 0;
}
// This will return the expected balance during normal situations
} else {
return getValueAt(balances[_owner], _blockNumber);
}
}
totalSupplyAt keyboard_arrow_up
Source Code
function totalSupplyAt(uint256 _blockNumber) constant returns (uint256) {
// These next few lines are used when the totalSupply of the token is
// requested before a check point was ever created for this token, it
// requires that the `parentToken.totalSupplyAt` be queried at the
// genesis block for this token as that contains totalSupply of this
// token at this block number.
if (
(totalSupplyHistory.length == 0) ||
(totalSupplyHistory[0].fromBlock > _blockNumber)
) {
if (address(parentToken) != 0) {
return parentToken.totalSupplyAt(min(_blockNumber, parentSnapShotBlock));
} else {
return 0;
}
// This will return the expected totalSupply during normal situations
} else {
return getValueAt(totalSupplyHistory, _blockNumber);
}
}
createCloneToken keyboard_arrow_up
Parameters help
Source Code
function createCloneToken(
string _cloneTokenName,
uint8 _cloneDecimalUnits,
string _cloneTokenSymbol,
uint256 _snapshotBlock,
bool _transfersEnabled
) returns (address) {
if (_snapshotBlock > block.number) _snapshotBlock = block.number;
MiniMeToken cloneToken = tokenFactory.createCloneToken(
this,
_snapshotBlock,
_cloneTokenName,
_cloneDecimalUnits,
_cloneTokenSymbol,
_transfersEnabled
);
cloneToken.changeController(msg.sender);
// An event to make the token easy to find on the blockchain
NewCloneToken(address(cloneToken), _snapshotBlock);
return address(cloneToken);
}
generateTokens keyboard_arrow_up
Modifiers help
onlyController checks for the following:
Requirements help
Source Code
function generateTokens(address _owner, uint256 _amount)
onlyController
returns (bool)
{
uint256 curTotalSupply = getValueAt(totalSupplyHistory, block.number);
if (curTotalSupply + _amount < curTotalSupply) throw; // Check for overflow
updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
var previousBalanceTo = balanceOf(_owner);
if (previousBalanceTo + _amount < previousBalanceTo) throw; // Check for overflow
updateValueAtNow(balances[_owner], previousBalanceTo + _amount);
Transfer(0, _owner, _amount);
return true;
}
destroyTokens keyboard_arrow_up
Modifiers help
onlyController checks for the following:
Requirements help
Source Code
function destroyTokens(address _owner, uint256 _amount)
onlyController
returns (bool)
{
uint256 curTotalSupply = getValueAt(totalSupplyHistory, block.number);
if (curTotalSupply < _amount) throw;
updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
var previousBalanceFrom = balanceOf(_owner);
if (previousBalanceFrom < _amount) throw;
updateValueAtNow(balances[_owner], previousBalanceFrom - _amount);
Transfer(_owner, 0, _amount);
return true;
}
enableTransfers keyboard_arrow_up
Modifiers help
onlyController checks for the following:
Source Code
function enableTransfers(bool _transfersEnabled) onlyController {
transfersEnabled = _transfersEnabled;
}
constructor keyboard_arrow_up
spendableBalanceOf keyboard_arrow_up
Requirements help
Source Code
function spendableBalanceOf(address _holder) public constant returns (uint256) {
return transferableTokens(_holder, uint64(now));
}
grantVestedTokens keyboard_arrow_up
Parameters help
Requirements help
Source Code
function grantVestedTokens(
address _to,
uint256 _value,
uint64 _start,
uint64 _cliff,
uint64 _vesting
) public {
// Check start, cliff and vesting are properly order to ensure correct functionality of the formula.
if (_cliff < _start) throw;
if (_vesting < _start) throw;
if (_vesting < _cliff) throw;
if (!canCreateGrants[msg.sender]) throw;
if (tokenGrantsCount(_to) > 20) throw; // To prevent a user being spammed and have his balance locked (out of gas attack when calculating vesting).
TokenGrant memory grant = TokenGrant(
msg.sender,
_value,
_cliff,
_vesting,
_start
);
grants[_to].push(grant);
if (!transfer(_to, _value)) throw;
NewTokenGrant(msg.sender, _to, _value, _cliff, _vesting, _start);
}
setCanCreateGrants keyboard_arrow_up
Modifiers help
onlyVestingWhitelister checks for the following:
Source Code
function setCanCreateGrants(address _addr, bool _allowed)
public
onlyVestingWhitelister
{
doSetCanCreateGrants(_addr, _allowed);
}
changeVestingWhitelister keyboard_arrow_up
Modifiers help
onlyVestingWhitelister checks for the following:
Source Code
function changeVestingWhitelister(address _newWhitelister)
public
onlyVestingWhitelister
{
doSetCanCreateGrants(vestingWhitelister, false);
vestingWhitelister = _newWhitelister;
doSetCanCreateGrants(vestingWhitelister, true);
}
revokeTokenGrant keyboard_arrow_up
tokenGrantsCount keyboard_arrow_up
tokenGrant keyboard_arrow_up
Source Code
function tokenGrant(address _holder, uint256 _grantId)
public
constant
returns (
address granter,
uint256 value,
uint256 vested,
uint64 start,
uint64 cliff,
uint64 vesting
)
{
TokenGrant grant = grants[_holder][_grantId];
granter = grant.granter;
value = grant.value;
start = grant.start;
cliff = grant.cliff;
vesting = grant.vesting;
vested = vestedTokens(grant, uint64(now));
}
lastTokenIsTransferableDate keyboard_arrow_up
Source Code
function lastTokenIsTransferableDate(address holder)
public
constant
returns (uint64 date)
{
date = uint64(now);
uint256 grantIndex = tokenGrantsCount(holder);
for (uint256 i = 0; i < grantIndex; i++) {
date = max64(grants[holder][i].vesting, date);
}
return date;
}
transferableTokens keyboard_arrow_up
Requirements help
Source Code
function transferableTokens(address holder, uint64 time)
public
constant
returns (uint256)
{
uint256 grantIndex = tokenGrantsCount(holder);
if (grantIndex == 0) return balanceOf(holder); // shortcut for holder without grants
// Iterate through all the grants the holder has, and add all non-vested tokens
uint256 nonVested = 0;
for (uint256 i = 0; i < grantIndex; i++) {
nonVested = safeAdd(nonVested, nonVestedTokens(grants[holder][i], time));
}
// Balance - totalNonVested is the amount of tokens a holder can transfer at any given time
return safeSub(balanceOf(holder), nonVested);
}
Internal Functions
Internal functions are parts of the contract that can't be used directly, but instead are used by the public functions listed above.
internal MiniMeIrrevocableVestedToken.doSetCanCreateGrants keyboard_arrow_up
internal MiniMeIrrevocableVestedToken.vestedTokens keyboard_arrow_up
Source Code
function vestedTokens(TokenGrant grant, uint64 time)
internal
constant
returns (uint256)
{
return
calculateVestedTokens(
grant.value,
uint256(time),
uint256(grant.start),
uint256(grant.cliff),
uint256(grant.vesting)
);
}
internal MiniMeIrrevocableVestedToken.calculateVestedTokens keyboard_arrow_up
Parameters help
Source Code
function calculateVestedTokens(
uint256 tokens,
uint256 time,
uint256 start,
uint256 cliff,
uint256 vesting
) internal constant returns (uint256) {
// Shortcuts for before cliff and after vesting cases.
if (time < cliff) return 0;
if (time >= vesting) return tokens;
// Interpolate all vested tokens.
// As before cliff the shortcut returns 0, we can use just this function to
// calculate it.
// vestedTokens = tokens * (time - start) / (vesting - start)
uint256 vestedTokens = safeDiv(
safeMul(tokens, safeSub(time, start)),
safeSub(vesting, start)
);
return vestedTokens;
}
internal MiniMeIrrevocableVestedToken.nonVestedTokens keyboard_arrow_up
Requirements help
Source Code
function nonVestedTokens(TokenGrant grant, uint64 time)
internal
constant
returns (uint256)
{
// Of all the tokens of the grant, how many of them are not vested?
// grantValue - vestedTokens
return safeSub(grant.value, vestedTokens(grant, time));
}
internal MiniMeToken.doTransfer keyboard_arrow_up
Requirements help
Source Code
function doTransfer(
address _from,
address _to,
uint256 _amount
) internal returns (bool) {
if (_amount == 0) {
return true;
}
// Do not allow transfer to 0x0 or the token contract itself
if ((_to == 0) || (_to == address(this))) throw;
// If the amount being transfered is more than the balance of the
// account the transfer returns false
var previousBalanceFrom = balanceOfAt(_from, block.number);
if (previousBalanceFrom < _amount) {
throw;
}
// Alerts the token controller of the transfer
if (isContract(controller)) {
if (!Controller(controller).onTransfer(_from, _to, _amount)) throw;
}
// First update the balance array with the new value for the address
// sending the tokens
updateValueAtNow(balances[_from], previousBalanceFrom - _amount);
// Then update the balance array with the new value for the address
// receiving the tokens
var previousBalanceTo = balanceOfAt(_to, block.number);
if (previousBalanceTo + _amount < previousBalanceTo) throw; // Check for overflow
updateValueAtNow(balances[_to], previousBalanceTo + _amount);
// An event to make the transfer easy to find on the blockchain
Transfer(_from, _to, _amount);
return true;
}
internal MiniMeToken.min keyboard_arrow_up
internal MiniMeToken.getValueAt keyboard_arrow_up
Source Code
function getValueAt(Checkpoint[] storage checkpoints, uint256 _block)
internal
constant
returns (uint256)
{
if (checkpoints.length == 0) return 0;
// Shortcut for the actual value
if (_block >= checkpoints[checkpoints.length - 1].fromBlock)
return checkpoints[checkpoints.length - 1].value;
if (_block < checkpoints[0].fromBlock) return 0;
// Binary search of the value in the array
uint256 min = 0;
uint256 max = checkpoints.length - 1;
while (max > min) {
uint256 mid = (max + min + 1) / 2;
if (checkpoints[mid].fromBlock <= _block) {
min = mid;
} else {
max = mid - 1;
}
}
return checkpoints[min].value;
}
internal MiniMeToken.updateValueAtNow keyboard_arrow_up
Source Code
function updateValueAtNow(Checkpoint[] storage checkpoints, uint256 _value)
internal
{
if (
(checkpoints.length == 0) ||
(checkpoints[checkpoints.length - 1].fromBlock < block.number)
) {
Checkpoint newCheckPoint = checkpoints[checkpoints.length++];
newCheckPoint.fromBlock = uint128(block.number);
newCheckPoint.value = uint128(_value);
} else {
Checkpoint oldCheckPoint = checkpoints[checkpoints.length - 1];
oldCheckPoint.value = uint128(_value);
}
}
internal MiniMeToken.isContract keyboard_arrow_up
internal SafeMath.safeMul keyboard_arrow_up
Requirements help
Source Code
function safeMul(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
internal SafeMath.safeDiv keyboard_arrow_up
Source Code
function safeDiv(uint256 a, uint256 b) internal returns (uint256) {
assert(b > 0);
uint256 c = a / b;
assert(a == b * c + (a % b));
return c;
}
internal SafeMath.safeSub keyboard_arrow_up
Requirements help
Source Code
function safeSub(uint256 a, uint256 b) internal returns (uint256) {
assert(b <= a);
return a - b;
}
internal SafeMath.safeAdd keyboard_arrow_up
Source Code
function safeAdd(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a + b;
assert(c >= a && c >= b);
return c;
}