pragma solidity 0.4 .21;
// ----------------------------------------------------------------------------------------------
// Sample fixed supply token contract
// Enjoy. (c) BokkyPooBah 2017. The MIT Licence.
// ----------------------------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/issues/20
contract Token {
// Get the total
//token supply
function totalSupply() constant returns(uint256 initialSupply);
// Get the account balance of another account with address _owner
function balanceOf(address _owner) constant returns(uint256 balance);
// Send _value amount of tokens to address _to
function transfer(address _to, uint256 _value) returns(bool success);
// Send _value amount of tokens from address _from to address _to
function transferFrom(address _from, address _to, uint256 _value) returns(bool success);
// Allow _spender to withdraw from your account, multiple times, up to the _value amount.
// If this function is called again it overwrites the current allowance with _value.
// this function is required for some DEX functionality
function approve(address _spender, uint256 _value) returns(bool success);
// Returns the amount which _spender is still allowed to withdraw from _owner
function allowance(address _owner, address _spender) constant returns(uint256 remaining);
//Trigger when Tokens Burned
event Burn(address indexed from, uint256 value);
// Triggered when tokens are transferred.
event Transfer(address indexed _from, address indexed _to, uint256 _value);
// Triggered whenever approve(address _spender, uint256 _value) is called.
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
contract AssetToken is Token {
string public symbol;
string public name;
uint8 public decimals;
uint256 _totalSupply;
address public centralAdmin;
uint256 public soldToken;
// Owner of this contract
address public owner;
// Balances for each account
mapping(address => uint256) balances;
// Owner of account approves the transfer of an amount to another account
mapping(address => mapping(address => uint256)) allowed;
// Functions with this modifier can only be executed by the owner
modifier onlyOwner(){
require(msg.sender == owner);
_;
}
// Constructor
function AssetToken(uint256 totalSupply,string tokenName,uint8 decimalUnits,string tokenSymbol,address centralAdmin) {
soldToken = 0;
if(centralAdmin != 0)
owner = centralAdmin;
else
owner = msg.sender;
balances[owner] = totalSupply;
symbol = tokenSymbol;
name = tokenName;
decimals = decimalUnits;
_totalSupply = totalSupply ;
}
function transferAdminship(address newAdmin) onlyOwner {
owner = newAdmin;
}
function totalSupply() constant returns(uint256 initialSupply) {
initialSupply = _totalSupply;
}
// What is the balance of a particular account?
function balanceOf(address _owner) constant returns(uint256 balance) {
return balances[_owner];
}
//Mint the Token
function mintToken(address target, uint256 mintedAmount) onlyOwner{
balances[target] += mintedAmount;
_totalSupply += mintedAmount;
Transfer(0, this, mintedAmount);
Transfer(this, target, mintedAmount);
}
// Transfer the balance from owner's account to another account
function transfer(address _to, uint256 _amount) returns(bool success) {
if (balances[msg.sender] >= _amount &&
_amount > 0 &&
balances[_to] + _amount > balances[_to]) {
balances[msg.sender] -= _amount;
balances[_to] += _amount;
Transfer(msg.sender, _to, _amount);
return true;
} else {
return false;
}
}
// Send _value amount of tokens from address _from to address _to
// The transferFrom method is used for a withdraw workflow, allowing contracts to send
// tokens on your behalf, for example to "deposit" to a contract address and/or to charge
// fees in sub-currencies; the command should fail unless the _from account has
// deliberately authorized the sender of the message via some mechanism; we propose
// these standardized APIs for approval:
function transferFrom(
address _from,
address _to,
uint256 _amount
) returns(bool success) {
if (balances[_from] >= _amount && allowed[_from][msg.sender] >= _amount && _amount > 0 &&
balances[_to] + _amount > balances[_to]) {
balances[_from] -= _amount;
allowed[_from][msg.sender] -= _amount;
balances[_to] += _amount;
Transfer(_from, _to, _amount);
return true;
} else {
return false;
}
}
//Allow the owner to burn the token from their accounts
function burn(uint256 _value) public returns (bool success) {
require(balances[msg.sender] >= _value);
balances[msg.sender] -= _value;
_totalSupply -= _value;
Burn(msg.sender, _value);
return true;
}
//For calculating the sold tokens
function transferCrowdsale(address _to, uint256 _value){
require(balances[msg.sender] > 0);
require(balances[msg.sender] >= _value);
require(balances[_to] + _value >= balances[_to]);
//if(admin)
balances[msg.sender] -= _value;
balances[_to] += _value;
soldToken += _value;
Transfer(msg.sender, _to, _value);
}
// Allow _spender to withdraw from your account, multiple times, up to the _value amount.
// If this function is called again it overwrites the current allowance with _value.
function approve(address _spender, uint256 _amount) returns(bool success) {
allowed[msg.sender][_spender] = _amount;
Approval(msg.sender, _spender, _amount);
return true;
}
function allowance(address _owner, address _spender) constant returns(uint256 remaining) {
return allowed[_owner][_spender];
}
}
{
"compilationTarget": {
"AssetToken.sol": "AssetToken"
},
"evmVersion": "byzantium",
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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