AdEx

0x4470bb87d77b963a013db939be332f927f2b992e

balanceOf keyboard_arrow_up

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

transfer keyboard_arrow_up

  function transfer(address _to, uint _value)
  {
    if (_to == msg.sender) return; // no-op, allow even during crowdsale, in order to work around using grantVestedTokens() while in crowdsale
    if (!isCrowdfundCompleted()) throw;
    super.transfer(_to, _value);
  }

allowance keyboard_arrow_up

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

transferFrom keyboard_arrow_up

  function transferFrom(address _from, address _to, uint _value)
    is_crowdfund_completed
  {
    super.transferFrom(_from, _to, _value);
  }

approve keyboard_arrow_up

  function approve(address _spender, uint _value) {

    // 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 ((_value != 0) && (allowed[msg.sender][_spender] != 0)) throw;

    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
  }

transferableTokens keyboard_arrow_up

  function transferableTokens(address holder, uint64 time) constant public 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 = SafeMath.add(nonVested, nonVestedTokens(grants[holder][i], time));
    }

    // Balance - totalNonVested is the amount of tokens a holder can transfer at any given time
    uint256 vestedTransferable = SafeMath.sub(balanceOf(holder), nonVested);

    // Return the minimum of how many vested can transfer and other value
    // in case there are other limiting transferability factors (default is balanceOf)
    return SafeMath.min256(vestedTransferable, super.transferableTokens(holder, time));
  }

grantVestedTokens keyboard_arrow_up

  function grantVestedTokens(
    address _to,
    uint256 _value,
    uint64 _start,
    uint64 _cliff,
    uint64 _vesting,
    bool _revokable,
    bool _burnsOnRevoke
  ) public {

    // Check for date inconsistencies that may cause unexpected behavior
    if (_cliff < _start || _vesting < _cliff) {
      throw;
    }

    if (tokenGrantsCount(_to) > MAX_GRANTS_PER_ADDRESS) throw;   // To prevent a user being spammed and have his balance locked (out of gas attack when calculating vesting).

    uint count = grants[_to].push(
                TokenGrant(
                  _revokable ? msg.sender : 0, // avoid storing an extra 20 bytes when it is non-revokable
                  _value,
                  _cliff,
                  _vesting,
                  _start,
                  _revokable,
                  _burnsOnRevoke
                )
              );

    transfer(_to, _value);

    NewTokenGrant(msg.sender, _to, _value, count - 1);
  }

revokeTokenGrant keyboard_arrow_up

  function revokeTokenGrant(address _holder, uint _grantId) public {
    TokenGrant grant = grants[_holder][_grantId];

    if (!grant.revokable) { // Check if grant was revokable
      throw;
    }

    if (grant.granter != msg.sender) { // Only granter can revoke it
      throw;
    }

    address receiver = grant.burnsOnRevoke ? 0xdead : msg.sender;

    uint256 nonVested = nonVestedTokens(grant, uint64(now));

    // remove grant from array
    delete grants[_holder][_grantId];
    grants[_holder][_grantId] = grants[_holder][grants[_holder].length.sub(1)];
    grants[_holder].length -= 1;

    balances[receiver] = balances[receiver].add(nonVested);
    balances[_holder] = balances[_holder].sub(nonVested);

    Transfer(_holder, receiver, nonVested);
  }

tokenGrantsCount keyboard_arrow_up

  function tokenGrantsCount(address _holder) constant returns (uint index) {
    return grants[_holder].length;
  }

calculateVestedTokens keyboard_arrow_up

  function calculateVestedTokens(
    uint256 tokens,
    uint256 time,
    uint256 start,
    uint256 cliff,
    uint256 vesting) 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 calculate a value
      // in the vesting rect (as shown in above's figure)

      // vestedTokens = tokens * (time - start) / (vesting - start)
      uint256 vestedTokens = SafeMath.div(
                                    SafeMath.mul(
                                      tokens,
                                      SafeMath.sub(time, start)
                                      ),
                                    SafeMath.sub(vesting, start)
                                    );

      return vestedTokens;
  }

tokenGrant keyboard_arrow_up

  function tokenGrant(address _holder, uint _grantId) constant returns (address granter, uint256 value, uint256 vested, uint64 start, uint64 cliff, uint64 vesting, bool revokable, bool burnsOnRevoke) {
    TokenGrant grant = grants[_holder][_grantId];

    granter = grant.granter;
    value = grant.value;
    start = grant.start;
    cliff = grant.cliff;
    vesting = grant.vesting;
    revokable = grant.revokable;
    burnsOnRevoke = grant.burnsOnRevoke;

    vested = vestedTokens(grant, uint64(now));
  }

lastTokenIsTransferableDate keyboard_arrow_up

  function lastTokenIsTransferableDate(address holder) constant public returns (uint64 date) {
    date = uint64(now);
    uint256 grantIndex = grants[holder].length;
    for (uint256 i = 0; i < grantIndex; i++) {
      date = SafeMath.max64(grants[holder][i].vesting, date);
    }
  }

getPriceRate keyboard_arrow_up

  function getPriceRate()
      constant
      returns (uint o_rate)
  {
      uint delta = SafeMath.sub(now, publicStartTime);

      if (delta > STAGE_TWO_TIME_END) return PRICE_STAGE_THREE;
      if (delta > STAGE_ONE_TIME_END) return PRICE_STAGE_TWO;

      return (PRICE_STAGE_ONE);
  }

calcAmount keyboard_arrow_up

  function calcAmount(uint _wei, uint _rate) 
    constant
    returns (uint) 
  {
    return SafeMath.div(SafeMath.mul(_wei, _rate), 1 ether);
  }

preBuy keyboard_arrow_up

  function preBuy()
    payable
    is_pre_crowdfund_period
    is_not_halted
  {
    // Pre-buy participants would get the first-day price, as well as a bonus of vested tokens
    uint priceVested = 0;

    if (msg.sender == preBuy1) priceVested = preBuyPrice1;
    if (msg.sender == preBuy2) priceVested = preBuyPrice2;
    if (msg.sender == preBuy3) priceVested = preBuyPrice3;

    if (priceVested == 0) throw;

    uint amount = processPurchase(PRICE_STAGE_ONE + priceVested, SafeMath.sub(PREBUY_PORTION_MAX, prebuyPortionTotal));
    grantVestedTokens(msg.sender, calcAmount(msg.value, priceVested), 
      uint64(now), uint64(now) + 91 days, uint64(now) + 365 days, 
      false, false
    );
    prebuyPortionTotal += amount;
    PreBuy(amount);
  }

constructor keyboard_arrow_up

  function()
    payable
    is_crowdfund_period
    is_not_halted
  {
    uint amount = processPurchase(getPriceRate(), SafeMath.sub(ALLOC_CROWDSALE, ADXSold));
    Buy(msg.sender, amount);
  }

grantVested keyboard_arrow_up

  function grantVested(address _adexTeamAddress, address _adexFundAddress)
    is_crowdfund_completed
    only_owner
    is_not_halted
  {
    // Grant tokens pre-allocated for the team
    grantVestedTokens(
      _adexTeamAddress, ALLOC_TEAM,
      uint64(now), uint64(now) + 91 days , uint64(now) + 365 days, 
      false, false
    );

    // Grant tokens that remain after crowdsale to the AdEx fund, vested for 2 years
    grantVestedTokens(
      _adexFundAddress, balances[ownerAddress],
      uint64(now), uint64(now) + 182 days , uint64(now) + 730 days, 
      false, false
    );
  }

toggleHalt keyboard_arrow_up

  function toggleHalt(bool _halted)
    only_owner
  {
    halted = _halted;
  }

drain keyboard_arrow_up

  function drain()
    only_owner
  {
    if (!ownerAddress.send(this.balance)) throw;
  }