File size: 4,432 Bytes
2707524 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | pragma solidity ^0.4.13;
contract SafeMath {
function safeMul(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function safeDiv(uint256 a, uint256 b) internal returns (uint256) {
assert(b > 0);
uint256 c = a / b;
assert(a == b * c + a % b);
return c;
}
function safeSub(uint256 a, uint256 b) internal returns (uint256) {
assert(b <= a);
return a - b;
}
function safeAdd(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a + b;
assert(c>=a && c>=b);
return c;
}
function assert(bool assertion) internal {
if (!assertion) {
throw;
}
}
}
contract DeepToken is SafeMath{
string public name;
string public symbol;
uint8 public decimals;
uint256 public totalSupply;
address public owner;
mapping (address => uint256) public balanceOf;
mapping (address => uint256) public freezeOf;
mapping (address => mapping (address => uint256)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
event Burn(address indexed from, uint256 value);
event Freeze(address indexed from, uint256 value);
event Unfreeze(address indexed from, uint256 value);
function DeepToken() {
totalSupply = 100*(10**8)*(10**18);
balanceOf[msg.sender] = 100*(10**8)*(10**18);
name = "DeepToken";
symbol = "DPT";
decimals = 18;
owner = msg.sender;
}
function transfer(address _to, uint256 _value) {
if (_to == 0x0) throw;
if (_value <= 0) throw;
if (balanceOf[msg.sender] < _value) throw;
if (balanceOf[_to] + _value < balanceOf[_to]) throw;
balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);
balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);
Transfer(msg.sender, _to, _value);
}
function approve(address _spender, uint256 _value)
returns (bool success) {
if (_value <= 0) throw;
allowance[msg.sender][_spender] = _value;
return true;
}
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
if (_to == 0x0) throw;
if (_value <= 0) throw;
if (balanceOf[_from] < _value) throw;
if (balanceOf[_to] + _value < balanceOf[_to]) throw;
if (_value > allowance[_from][msg.sender]) throw;
balanceOf[_from] = SafeMath.safeSub(balanceOf[_from], _value);
balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);
allowance[_from][msg.sender] = SafeMath.safeSub(allowance[_from][msg.sender], _value);
Transfer(_from, _to, _value);
return true;
}
function burn(uint256 _value) returns (bool success) {
if (balanceOf[msg.sender] < _value) throw;
if (_value <= 0) throw;
balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);
totalSupply = SafeMath.safeSub(totalSupply,_value);
Burn(msg.sender, _value);
return true;
}
function freeze(uint256 _value) returns (bool success) {
if (balanceOf[msg.sender] < _value) throw;
if (_value <= 0) throw;
balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);
freezeOf[msg.sender] = SafeMath.safeAdd(freezeOf[msg.sender], _value);
Freeze(msg.sender, _value);
return true;
}
function unfreeze(uint256 _value) returns (bool success) {
if (freezeOf[msg.sender] < _value) throw;
if (_value <= 0) throw;
freezeOf[msg.sender] = SafeMath.safeSub(freezeOf[msg.sender], _value);
balanceOf[msg.sender] = SafeMath.safeAdd(balanceOf[msg.sender], _value);
Unfreeze(msg.sender, _value);
return true;
}
function withdrawEther(uint256 amount) {
if(msg.sender != owner)throw;
owner.transfer(amount);
}
function() payable {
}
} |