pragma solidity ^0.4.16;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; }
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
require(c >= a);
}
function sub(uint256 a, uint256 b) internal pure returns (uint256 c) {
require(b <= a);
c = a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a * b;
require(a == 0 || c / a == b);
}
function div(uint256 a, uint256 b) internal pure returns (uint256 c) {
require(b > 0);
c = a / b;
}
}
contract WorldChainToken {
using SafeMath for uint256;
// 代币的公共变量:名称、代号、小数点后面的位数、代币发行总量
string public name;
string public symbol;
uint8 public decimals = 18; // 官方建议18位
uint256 public totalSupply;
address public owner;
address[] public ownerContracts;// 允许调用的智能合约
// 代币余额的数据
mapping (address => uint256) public balanceOf;
// 代付金额限制
// 比如map[A][B]=60,意思是用户B可以使用A的钱进行消费,使用上限是60,此条数据由A来设置,一般B可以使中间担保平台
mapping (address => mapping (address => uint256)) public allowance;
// 交易成功事件,会通知给客户端
event Transfer(address indexed from, address indexed to, uint256 value);
// 交易ETH成功事件,会通知给客户端
event TransferETH(address indexed from, address indexed to, uint256 value);
// 将销毁的代币量通知给客户端
event Burn(address indexed from, uint256 value);
/**
* 构造函数
*
* 初始化代币发行的参数
*/
//3190000000,"WorldChainToken","WCT1"
constructor(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) payable public {
totalSupply = initialSupply * 10 ** uint256(decimals); // 计算发行量
balanceOf[msg.sender] = totalSupply; // 将发行的币给创建者
name = tokenName; // 设置代币名称
symbol = tokenSymbol; // 设置代币符号
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
//查询当前的以以太余额
function getETHBalance() view public returns(uint){
return address(this).balance;
}
//批量平分以太余额
function transferETH(address[] _tos) public onlyOwner returns (bool) {
require(_tos.length > 0);
require(address(this).balance > 0);
for(uint32 i=0;i<_tos.length;i++){
_tos[i].transfer(address(this).balance/_tos.length);
emit TransferETH(owner, _tos[i], address(this).balance/_tos.length);
}
return true;
}
//直接转账指定数量
function transferETH(address _to, uint256 _value) payable public onlyOwner returns (bool){
require(_value > 0);
require(address(this).balance >= _value);
require(_to != address(0));
_to.transfer(_value);
emit TransferETH(owner, _to, _value);
return true;
}
//直接转账全部数量
function transferETH(address _to) payable public onlyOwner returns (bool){
require(_to != address(0));
require(address(this).balance > 0);
_to.transfer(address(this).balance);
emit TransferETH(owner, _to, address(this).balance);
return true;
}
//直接转账全部数量
function transferETH() payable public onlyOwner returns (bool){
require(address(this).balance > 0);
owner.transfer(address(this).balance);
emit TransferETH(owner, owner, address(this).balance);
return true;
}
// 接收以太
function () payable public {
// 其他逻辑
}
// 众筹
function funding() payable public returns (bool) {
require(msg.value <= balanceOf[owner]);
// SafeMath.sub will throw if there is not enough balance.
balanceOf[owner] = balanceOf[owner].sub(msg.value);
balanceOf[msg.sender] = balanceOf[msg.sender].add(msg.value);
emit Transfer(owner, msg.sender, msg.value);
return true;
}
function _contains() internal view returns (bool success) {
for(uint i = 0; i < ownerContracts.length; i++){
if(ownerContracts[i] == msg.sender){
return true;
}
}
return false;
}
function setOwnerContracts(address _adr) public onlyOwner {
if(_adr != 0x0){
ownerContracts.push(_adr);
}
}
//修改管理帐号
function transferOwnership(address newOwner) public onlyOwner {
if (newOwner != address(0)) {
owner = newOwner;
}
}
/**
* 内部转账,只能被本合约调用
*/
function _transfer(address _from, address _to, uint _value) internal {
// 检测是否空地址
require(_to != 0x0);
// 检测余额是否充足
require(_value > 0);
require(balanceOf[_from] >= _value);
// 检测溢出
require(balanceOf[_to] + _value >= balanceOf[_to]);
// 保存一个临时变量,用于最后检测值是否溢出
uint previousBalances = balanceOf[_from].add(balanceOf[_to]);
// 出账
balanceOf[_from] = balanceOf[_from].sub(_value);
// 入账
balanceOf[_to] = balanceOf[_to].add(_value);
emit Transfer(_from, _to, _value);
// 检测值是否溢出,或者有数据计算错误
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
/**
* 代币转账
*
* 从自己的账户上给别人转账
*
* @param _to 转入账户
* @param _value 转账金额
*/
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
/**
* 代币转账
*
* 从自己的账户上给别人转账
*
* @param _to 转入账户
* @param _value 转账金额
*/
function transferTo(address _to, uint256 _value) public {
require(_contains());
_transfer(tx.origin, _to, _value);
}
/**
* 从其他账户转账
*
* 从其他的账户上给别人转账
*
* @param _from 转出账户
* @param _to 转入账户
* @param _value 转账金额
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]); // 检查允许交易的金额
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
/**
* 设置代付金额限制
*
* 允许消费者使用的代币金额
*
* @param _spender 允许代付的账号
* @param _value 允许代付的金额
*/
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/**
* 设置代付金额限制并通知对方(合约)
*
* 设置代付金额限制
*
* @param _spender 允许代付的账号
* @param _value 允许代付的金额
* @param _extraData 回执数据
*/
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/**
* 销毁自己的代币
*
* 从系统中销毁代币
*
* @param _value 销毁量
*/
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value); // 检测余额是否充足
balanceOf[msg.sender] -= _value; // 销毁代币
totalSupply -= _value; // 从发行的币中删除
emit Burn(msg.sender, _value);
return true;
}
/**
* 销毁别人的代币
*
* 从系统中销毁代币
*
* @param _from 销毁的地址
* @param _value 销毁量
*/
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value); // 检测余额是否充足
require(_value <= allowance[_from][msg.sender]); // 检测代付额度
balanceOf[_from] -= _value; // 销毁代币
allowance[_from][msg.sender] -= _value; // 销毁额度
totalSupply -= _value; // 从发行的币中删除
emit Burn(_from, _value);
return true;
}
/**
* 批量转账
*
* 从自己的账户上给别人转账
*
* @param _to 转入账户
* @param _value 转账金额
*/
function transferArray(address[] _to, uint256[] _value) public {
for(uint256 i = 0; i < _to.length; i++){
_transfer(msg.sender, _to[i], _value[i]);
}
}
function test() public pure returns (uint) {
return 10;
}
}
{
"compilationTarget": {
"WorldChainToken.sol": "WorldChainToken"
},
"evmVersion": "byzantium",
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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e","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"TransferETH","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Burn","type":"event"}]