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author | chriseth <c@ethdev.com> | 2017-01-21 02:41:25 +0800 |
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committer | chriseth <c@ethdev.com> | 2017-01-21 02:50:25 +0800 |
commit | c6207e27613f9664c0d79a7c7d91048ec6fc8bfc (patch) | |
tree | dcca6f404f5c63e857e3f680169842715f9c84a8 /std/StandardToken.sol | |
parent | 61a15bb92efd24b54dfa982d42a600b075ebad38 (diff) | |
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Make token constructible.
Diffstat (limited to 'std/StandardToken.sol')
-rw-r--r-- | std/StandardToken.sol | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/std/StandardToken.sol b/std/StandardToken.sol index 4ff1b8f9..f59e04ac 100644 --- a/std/StandardToken.sol +++ b/std/StandardToken.sol @@ -3,20 +3,28 @@ pragma solidity ^0.4.0; import "./Token.sol"; contract StandardToken is Token { - uint256 public totalSupply; - mapping (address => uint256) public balanceOf; + uint256 supply; + mapping (address => uint256) balance; mapping (address => - mapping (address => uint256)) public allowance; + mapping (address => uint256)) m_allowance; function StandardToken(address _initialOwner, uint256 _supply) { - totalSupply = _supply; - balanceOf[_initialOwner] = _supply; + supply = _supply; + balance[_initialOwner] = _supply; + } + + function balanceOf(address _account) constant returns (uint) { + return balance[_account]; + } + + function totalSupply() constant returns (uint) { + return supply; } function transfer(address _to, uint256 _value) returns (bool success) { - if (balanceOf[msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]) { - balanceOf[msg.sender] -= _value; - balanceOf[_to] += _value; + if (balance[msg.sender] >= _value && balance[_to] + _value >= balance[_to]) { + balance[msg.sender] -= _value; + balance[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { @@ -25,9 +33,9 @@ contract StandardToken is Token { } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { - if (allowance[_from][msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]) { - allowance[_from][msg.sender] -= _value; - balanceOf[_to] += _value; + if (m_allowance[_from][msg.sender] >= _value && balance[_to] + _value >= balance[_to]) { + m_allowance[_from][msg.sender] -= _value; + balance[_to] += _value; Transfer(_from, _to, _value); return true; } else { @@ -36,8 +44,12 @@ contract StandardToken is Token { } function approve(address _spender, uint256 _value) returns (bool success) { - allowance[msg.sender][_spender] = _value; + m_allowance[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } + + function allowance(address _owner, address _spender) constant returns (uint256 remaining) { + return m_allowance[_owner][_spender]; + } } |