Nebulas Token

0x5d65d971895edc438f465c17db6992698a52318d Copy

ERC20

This contract is an ERC20 token.

Name Nebulas Token

Symbol NAS

Decimals 18

Total Supply 100,000,000 NAS

About

Stats

Public Functions 16

Event Types 7

Code Size 8,736 bytes

Events (7)

AllocateToken Event

Parameters

_to	address
_value	uint256

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

DecreaseSupply Event

Parameters

_value

uint256

IncreaseSupply Event

Parameters

_value

uint256

IssueToken Event

Parameters

_to	address
_value	uint256

Migrate Event

Parameters

_to	address
_value	uint256

Transfer Event

Parameters

_from	address
_to	address
_value	uint256

Constants (3)

name Constant

string

Nebulas Token

symbol Constant

string

NAS

decimals Constant

uint256

State Variables (13)

version Variable

string

ethFundDeposit Variable

address

newContractAddr Variable

address

isFunding Variable

bool

fundingStartBlock Variable

uint256

fundingStopBlock Variable

uint256

currentSupply Variable

uint256

tokenRaised Variable

uint256

tokenMigrated Variable

uint256

tokenExchangeRate Variable

uint256

totalSupply Variable

uint256

balances Variable

mapping(address => uint256)

Internal Variable

allowed Variable

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

Internal Variable

Functions Expand All Collapse All

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability constant

Source Code

function balanceOf(address _owner) constant returns (uint256 balance) {
  return balances[_owner];
}

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function transfer(address _to, uint256 _value) returns (bool success) {
  if (balances[msg.sender] >= _value && _value > 0) {
    balances[msg.sender] -= _value;
    balances[_to] += _value;
    Transfer(msg.sender, _to, _value);
    return true;
  } else {
    return false;
  }
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) returns (bool success) {
  if (
    balances[_from] >= _value &&
    allowed[_from][msg.sender] >= _value &&
    _value > 0
  ) {
    balances[_to] += _value;
    balances[_from] -= _value;
    allowed[_from][msg.sender] -= _value;
    Transfer(_from, _to, _value);
    return true;
  } else {
    return false;
  }
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function approve(address _spender, uint256 _value) returns (bool success) {
  allowed[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _value);
  return true;
}

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

function allowance(address _owner, address _spender)
  constant
  returns (uint256 remaining)
{
  return allowed[_owner][_spender];
}

setTokenExchangeRate

Parameters

Name	Type
_tokenExchangeRate	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

_tokenExchangeRate must not be equal to 0

_tokenExchangeRate must not be equal to tokenExchangeRate

Source Code

function setTokenExchangeRate(uint256 _tokenExchangeRate) external isOwner {
  if (_tokenExchangeRate == 0) throw;
  if (_tokenExchangeRate == tokenExchangeRate) throw;

  tokenExchangeRate = _tokenExchangeRate;
}

increaseSupply

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

totalSupply must be greater than or equal to value + currentSupply

Source Code

function increaseSupply(uint256 _value) external isOwner {
  uint256 value = formatDecimals(_value);
  if (value + currentSupply > totalSupply) throw;
  currentSupply = safeAdd(currentSupply, value);
  IncreaseSupply(value);
}

decreaseSupply

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

currentSupply must be greater than or equal to value + tokenRaised

Source Code

function decreaseSupply(uint256 _value) external isOwner {
  uint256 value = formatDecimals(_value);
  if (value + tokenRaised > currentSupply) throw;

  currentSupply = safeSubtract(currentSupply, value);
  DecreaseSupply(value);
}

startFunding

Parameters

Name	Type
_fundingStartBlock	uint256
_fundingStopBlock	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

isFunding must not be true

_fundingStartBlock must be less than _fundingStopBlock

_fundingStartBlock must be greater than block.number

Source Code

function startFunding(uint256 _fundingStartBlock, uint256 _fundingStopBlock)
  external
  isOwner
{
  if (isFunding) throw;
  if (_fundingStartBlock >= _fundingStopBlock) throw;
  if (block.number >= _fundingStartBlock) throw;

  fundingStartBlock = _fundingStartBlock;
  fundingStopBlock = _fundingStopBlock;
  isFunding = true;
}

stopFunding

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

isFunding must not be true

Source Code

function stopFunding() external isOwner {
  if (!isFunding) throw;
  isFunding = false;
}

setMigrateContract

Parameters

Name	Type
_newContractAddr	address

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

_newContractAddr must not be equal to newContractAddr

Source Code

function setMigrateContract(address _newContractAddr) external isOwner {
  if (_newContractAddr == newContractAddr) throw;
  newContractAddr = _newContractAddr;
}

changeOwner

Parameters

Name	Type
_newFundDeposit	address

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

_newFundDeposit must not be equal to UNKNOWN VALUE

Source Code

function changeOwner(address _newFundDeposit) external isOwner() {
  if (_newFundDeposit == address(0x0)) throw;
  ethFundDeposit = _newFundDeposit;
}

migrate

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Requirements

isFunding must not be true

newContractAddr must not be equal to UNKNOWN VALUE

tokens must not be equal to 0

the result of calling undefined with the sender's address, tokens must not be true

Source Code

function migrate() external {
  if (isFunding) throw;
  if (newContractAddr == address(0x0)) throw;

  uint256 tokens = balances[msg.sender];
  if (tokens == 0) throw;

  balances[msg.sender] = 0;
  tokenMigrated = safeAdd(tokenMigrated, tokens);

  IMigrationContract newContract = IMigrationContract(newContractAddr);
  if (!newContract.migrate(msg.sender, tokens)) throw;

  Migrate(msg.sender, tokens); // log it
}

transferETH

Parameters

This function has no parameters.

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

this.balance must not be equal to 0

the result of calling undefined with this.balance must not be true

Source Code

function transferETH() external isOwner {
  if (this.balance == 0) throw;
  if (!ethFundDeposit.send(this.balance)) throw;
}

allocateToken

Parameters

Name	Type
_addr	address
_eth	uint256

Properties

Visibility public

Mutability transaction

Modifiers

isOwner checks for the following:

ethFundDeposit must be equal to the sender's address

Requirements

_eth must not be equal to 0

_addr must not be equal to UNKNOWN VALUE

currentSupply must be greater than or equal to tokens + tokenRaised

Source Code

function allocateToken(address _addr, uint256 _eth) external isOwner {
  if (_eth == 0) throw;
  if (_addr == address(0x0)) throw;

  uint256 tokens = safeMult(formatDecimals(_eth), tokenExchangeRate);
  if (tokens + tokenRaised > currentSupply) throw;

  tokenRaised = safeAdd(tokenRaised, tokens);
  balances[_addr] += tokens;

  AllocateToken(_addr, tokens); // logs token issued
}

constructor

Parameters

This function has no parameters.

Properties

Visibility public

Mutability payable

Requirements

isFunding must not be true

msg.value must not be equal to 0

fundingStartBlock must be less than or equal to block.number

fundingStopBlock must be greater than or equal to block.number

currentSupply must be greater than or equal to tokens + tokenRaised

Source Code

function() payable {
  if (!isFunding) throw;
  if (msg.value == 0) throw;

  if (block.number < fundingStartBlock) throw;
  if (block.number > fundingStopBlock) throw;

  uint256 tokens = safeMult(msg.value, tokenExchangeRate);
  if (tokens + tokenRaised > currentSupply) throw;

  tokenRaised = safeAdd(tokenRaised, tokens);
  balances[msg.sender] += tokens;

  IssueToken(msg.sender, tokens); // logs token issued
}

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 NebulasToken.formatDecimals

Parameters

Name	Type
_value	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function formatDecimals(uint256 _value) internal returns (uint256) {
  return _value * 10**decimals;
}

internal SafeMath.safeAdd

Parameters

Name	Type
x	uint256
y	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function safeAdd(uint256 x, uint256 y) internal returns (uint256) {
  uint256 z = x + y;
  assert((z >= x) && (z >= y));
  return z;
}

internal SafeMath.safeSubtract

Parameters

Name	Type
x	uint256
y	uint256

Properties

Visibility internal

Mutability transaction

Requirements

x must be greater than or equal to y

Source Code

function safeSubtract(uint256 x, uint256 y) internal returns (uint256) {
  assert(x >= y);
  uint256 z = x - y;
  return z;
}

internal SafeMath.safeMult

Parameters

Name	Type
x	uint256
y	uint256

Properties

Visibility internal

Mutability transaction

Requirements

One or more of the following:

Source Code

function safeMult(uint256 x, uint256 y) internal returns (uint256) {
  uint256 z = x * y;
  assert((x == 0) || (z / x == y));
  return z;
}

Nebulas Token

ERC20

About

Stats

Events (7) keyboard_arrow_up

AllocateToken Event

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

Approval Event

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

DecreaseSupply Event

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

IncreaseSupply Event

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

IssueToken Event

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

Migrate 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.

Constants (3) keyboard_arrow_up

name Constant

symbol Constant

decimals Constant

State Variables (13) keyboard_arrow_up

version Variable

ethFundDeposit Variable

newContractAddr Variable

isFunding Variable

fundingStartBlock Variable

fundingStopBlock Variable

currentSupply Variable

tokenRaised Variable

tokenMigrated Variable

tokenExchangeRate Variable

totalSupply Variable

balances Variable

allowed Variable

Functions Expand All Collapse All

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

Source Code

transferFrom 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

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

setTokenExchangeRate 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.

isOwner 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

increaseSupply 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.

isOwner 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

decreaseSupply 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.

isOwner 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

startFunding keyboard_arrow_up

Events (7)

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Parameters

Constants (3)

State Variables (13)

balanceOf

Parameters

transfer

Parameters

transferFrom

Parameters

approve

Parameters

allowance

Parameters

setTokenExchangeRate

Parameters

Modifiers

Requirements

increaseSupply

Parameters

Modifiers

Requirements

decreaseSupply

Parameters

Modifiers

Requirements

startFunding

Parameters

Modifiers

Requirements

stopFunding

Parameters

Modifiers

Requirements

setMigrateContract

Parameters

Modifiers

Requirements

changeOwner

Parameters

Modifiers

Requirements

migrate

Parameters

Requirements

transferETH

Parameters

Modifiers

Requirements

allocateToken

Parameters

Modifiers

Requirements

constructor

Parameters

Requirements

internal NebulasToken.formatDecimals

Parameters

internal SafeMath.safeAdd

Parameters

internal SafeMath.safeSubtract

Parameters

Requirements

internal SafeMath.safeMult

Parameters

Requirements