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author | Fabio Berger <me@fabioberger.com> | 2017-12-16 02:37:03 +0800 |
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committer | Fabio Berger <me@fabioberger.com> | 2017-12-16 02:37:03 +0800 |
commit | b46dd2e0a277340c19fa137a436981cc53c8cb80 (patch) | |
tree | d2814176fe8ffc5ec6a61534aa77487aae6bcc13 /packages/contracts/contracts/tokens/StandardToken.sol | |
parent | 484dd4c33aa5786def1f0b159f5b51f99a585aa8 (diff) | |
parent | 3eb08735d4d0fe4b046dd6b74f5ed503cf5c64e3 (diff) | |
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Merge branch 'development' into createWethPage
* development: (54 commits)
Fix redundant spaces
Fix tests
Fix website unused vars
Fix connect unused vars
Fix 0x.js unused vars
Dissallow unused vars/imports
Implement first custom linter rule async-suffix
Reuse intervalutils in website
Add a newline
Name a variable
Add a comment
Fix a conditional
Make migrations deterministic
Fix linter error
Fix linter errors
Add a function to init token balances
Rename tokenUtils.getNonProtocolTokens to tokenUtils.getDummyTokens
Add DummyToken to gitignore
Add DummyToken to artifacts list
Increase mocha timeout
...
Diffstat (limited to 'packages/contracts/contracts/tokens/StandardToken.sol')
-rw-r--r-- | packages/contracts/contracts/tokens/StandardToken.sol | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/packages/contracts/contracts/tokens/StandardToken.sol b/packages/contracts/contracts/tokens/StandardToken.sol new file mode 100644 index 000000000..9cd53d94a --- /dev/null +++ b/packages/contracts/contracts/tokens/StandardToken.sol @@ -0,0 +1,45 @@ +pragma solidity ^0.4.11; + +import "./Token.sol"; + +contract StandardToken is Token { + + function transfer(address _to, uint _value) returns (bool) { + //Default assumes totalSupply can't be over max (2^256 - 1). + if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { + balances[msg.sender] -= _value; + balances[_to] += _value; + Transfer(msg.sender, _to, _value); + return true; + } else { return false; } + } + + function transferFrom(address _from, address _to, uint _value) returns (bool) { + if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { + balances[_to] += _value; + balances[_from] -= _value; + allowed[_from][msg.sender] -= _value; + Transfer(_from, _to, _value); + return true; + } else { return false; } + } + + function balanceOf(address _owner) constant returns (uint) { + return balances[_owner]; + } + + function approve(address _spender, uint _value) returns (bool) { + allowed[msg.sender][_spender] = _value; + Approval(msg.sender, _spender, _value); + return true; + } + + function allowance(address _owner, address _spender) constant returns (uint) { + return allowed[_owner][_spender]; + } + + mapping (address => uint) balances; + mapping (address => mapping (address => uint)) allowed; + uint public totalSupply; +} + |