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update to new solidity

This commit is contained in:
Ricardo Guilherme Schmidt 2018-05-08 00:51:07 -03:00
parent ae4221a2ec
commit 9d5518ea24
5 changed files with 341 additions and 296 deletions
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4
contracts/token/ApproveAndCallFallBack.sol
View File

@ -1,5 +1,5 @@
pragma solidity ^0.4.14;
pragma solidity ^0.4.23;
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 _amount, address _token, bytes _data) public ;
function receiveApproval(address from, uint256 _amount, address _token, bytes _data) public;
}

425
contracts/token/MiniMeToken.sol
View File

@ -1,4 +1,4 @@
pragma solidity ^0.4.6;
pragma solidity ^0.4.23;
/*
Copyright 2016, Jordi Baylina
@ -16,14 +16,15 @@ pragma solidity ^0.4.6;
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/// @title MiniMeToken Contract
/// @author Jordi Baylina
/// @dev This token contract's goal is to make it easy for anyone to clone this
/// token using the token distribution at a given block, this will allow DAO's
/// and DApps to upgrade their features in a decentralized manner without
/// affecting the original token
/// @dev It is ERC20 compliant, but still needs to under go further testing.
/**
* @title MiniMeToken Contract
* @author Jordi Baylina
* @dev This token contract's goal is to make it easy for anyone to clone this
* token using the token distribution at a given block, this will allow DAO's
* and DApps to upgrade their features in a decentralized manner without
* affecting the original token
* @dev It is ERC20 compliant, but still needs to under go further testing.
*/
import "../common/Controlled.sol";
import "./TokenController.sol";
@ -31,9 +32,11 @@ import "./ApproveAndCallFallBack.sol";
import "./MiniMeTokenInterface.sol";
import "./MiniMeTokenFactory.sol";
/// @dev The actual token contract, the default controller is the msg.sender
/// that deploys the contract, so usually this token will be deployed by a
/// token controller contract, which Giveth will call a "Campaign"
/**
* @dev The actual token contract, the default controller is the msg.sender
* that deploys the contract, so usually this token will be deployed by a
* token controller contract, which Giveth will call a "Campaign"
*/
contract MiniMeToken is MiniMeTokenInterface, Controlled {
string public name; //The Token's name: e.g. DigixDAO Tokens
@ -41,10 +44,11 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
string public symbol; //An identifier: e.g. REP
string public version = "MMT_0.1"; //An arbitrary versioning scheme
/// @dev `Checkpoint` is the structure that attaches a block number to a
/// given value, the block number attached is the one that last changed the
/// value
/**
* @dev `Checkpoint` is the structure that attaches a block number to a
* given value, the block number attached is the one that last changed the
* value
*/
struct Checkpoint {
// `fromBlock` is the block number that the value was generated from
@ -86,20 +90,22 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// Constructor
////////////////
/// @notice Constructor to create a MiniMeToken
/// @param _tokenFactory The address of the MiniMeTokenFactory contract that
/// will create the Clone token contracts, the token factory needs to be
/// deployed first
/// @param _parentToken Address of the parent token, set to 0x0 if it is a
/// new token
/// @param _parentSnapShotBlock Block of the parent token that will
/// determine the initial distribution of the clone token, set to 0 if it
/// is a new token
/// @param _tokenName Name of the new token
/// @param _decimalUnits Number of decimals of the new token
/// @param _tokenSymbol Token Symbol for the new token
/// @param _transfersEnabled If true, tokens will be able to be transferred
function MiniMeToken(
/**
* @notice Constructor to create a MiniMeToken
* @param _tokenFactory The address of the MiniMeTokenFactory contract that
* will create the Clone token contracts, the token factory needs to be
* deployed first
* @param _parentToken Address of the parent token, set to 0x0 if it is a
* new token
* @param _parentSnapShotBlock Block of the parent token that will
* determine the initial distribution of the clone token, set to 0 if it
* is a new token
* @param _tokenName Name of the new token
* @param _decimalUnits Number of decimals of the new token
* @param _tokenSymbol Token Symbol for the new token
* @param _transfersEnabled If true, tokens will be able to be transferred
*/
constructor(
address _tokenFactory,
address _parentToken,
uint _parentSnapShotBlock,
@ -125,21 +131,25 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// ERC20 Methods
///////////////////
/// @notice Send `_amount` tokens to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _amount The amount of tokens to be transferred
/// @return Whether the transfer was successful or not
/**
* @notice Send `_amount` tokens to `_to` from `msg.sender`
* @param _to The address of the recipient
* @param _amount The amount of tokens to be transferred
* @return Whether the transfer was successful or not
*/
function transfer(address _to, uint256 _amount) public returns (bool success) {
require(transfersEnabled);
return doTransfer(msg.sender, _to, _amount);
}
/// @notice Send `_amount` tokens to `_to` from `_from` on the condition it
/// is approved by `_from`
/// @param _from The address holding the tokens being transferred
/// @param _to The address of the recipient
/// @param _amount The amount of tokens to be transferred
/// @return True if the transfer was successful
/**
* @notice Send `_amount` tokens to `_to` from `_from` on the condition it
* is approved by `_from`
* @param _from The address holding the tokens being transferred
* @param _to The address of the recipient
* @param _amount The amount of tokens to be transferred
* @return True if the transfer was successful
*/
function transferFrom(
address _from,
address _to,
@ -165,12 +175,14 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
return doTransfer(_from, _to, _amount);
}
/// @dev This is the actual transfer function in the token contract, it can
/// only be called by other functions in this contract.
/// @param _from The address holding the tokens being transferred
/// @param _to The address of the recipient
/// @param _amount The amount of tokens to be transferred
/// @return True if the transfer was successful
/**
* @dev This is the actual transfer function in the token contract, it can
* only be called by other functions in this contract.
* @param _from The address holding the tokens being transferred
* @param _to The address of the recipient
* @param _amount The amount of tokens to be transferred
* @return True if the transfer was successful
*/
function doTransfer(
address _from,
address _to,
@ -180,106 +192,124 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
returns(bool)
{
if (_amount == 0) {
return true;
}
if (_amount == 0) {
return true;
}
require(parentSnapShotBlock < block.number);
require(parentSnapShotBlock < block.number);
// Do not allow transfer to 0x0 or the token contract itself
require((_to != 0) && (_to != address(this)));
// Do not allow transfer to 0x0 or the token contract itself
require((_to != 0) && (_to != address(this)));
// If the amount being transfered is more than the balance of the
// account the transfer returns false
var previousBalanceFrom = balanceOfAt(_from, block.number);
if (previousBalanceFrom < _amount) {
return false;
}
// If the amount being transfered is more than the balance of the
// account the transfer returns false
uint256 previousBalanceFrom = balanceOfAt(_from, block.number);
if (previousBalanceFrom < _amount) {
return false;
}
// Alerts the token controller of the transfer
if (isContract(controller)) {
require(TokenController(controller).onTransfer(_from, _to, _amount));
}
// Alerts the token controller of the transfer
if (isContract(controller)) {
require(TokenController(controller).onTransfer(_from, _to, _amount));
}
// First update the balance array with the new value for the address
// sending the tokens
updateValueAtNow(balances[_from], previousBalanceFrom - _amount);
// First update the balance array with the new value for the address
// sending the tokens
updateValueAtNow(balances[_from], previousBalanceFrom - _amount);
// Then update the balance array with the new value for the address
// receiving the tokens
var previousBalanceTo = balanceOfAt(_to, block.number);
require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
updateValueAtNow(balances[_to], previousBalanceTo + _amount);
// Then update the balance array with the new value for the address
// receiving the tokens
uint256 previousBalanceTo = balanceOfAt(_to, block.number);
require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
updateValueAtNow(balances[_to], previousBalanceTo + _amount);
// An event to make the transfer easy to find on the blockchain
Transfer(_from, _to, _amount);
// An event to make the transfer easy to find on the blockchain
emit Transfer(_from, _to, _amount);
return true;
return true;
}
/// @param _owner The address that's balance is being requested
/// @return The balance of `_owner` at the current block
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfAt(_owner, block.number);
}
/// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
/// its behalf. This is a modified version of the ERC20 approve function
/// to be a little bit safer
/// @param _spender The address of the account able to transfer the tokens
/// @param _amount The amount of tokens to be approved for transfer
/// @return True if the approval was successful
function approve(address _spender, uint256 _amount) public returns (bool success) {
function doApprove(
address _from,
address _spender,
uint256 _amount
)
internal
returns (bool)
{
require(transfersEnabled);
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender,0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_amount == 0) || (allowed[msg.sender][_spender] == 0));
require((_amount == 0) || (allowed[_from][_spender] == 0));
// Alerts the token controller of the approve function call
if (isContract(controller)) {
require(TokenController(controller).onApprove(msg.sender, _spender, _amount));
require(TokenController(controller).onApprove(_from, _spender, _amount));
}
allowed[msg.sender][_spender] = _amount;
Approval(msg.sender, _spender, _amount);
allowed[_from][_spender] = _amount;
emit Approval(_from, _spender, _amount);
return true;
}
/// @dev This function makes it easy to read the `allowed[]` map
/// @param _owner The address of the account that owns the token
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens of _owner that _spender is allowed
/// to spend
/**
* @param _owner The address that's balance is being requested
* @return The balance of `_owner` at the current block
*/
function balanceOf(address _owner) external view returns (uint256 balance) {
return balanceOfAt(_owner, block.number);
}
/**
* @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
* its behalf. This is a modified version of the ERC20 approve function
* to be a little bit safer
* @param _spender The address of the account able to transfer the tokens
* @param _amount The amount of tokens to be approved for transfer
* @return True if the approval was successful
*/
function approve(address _spender, uint256 _amount) external returns (bool success) {
doApprove(msg.sender, _spender, _amount);
}
/**
* @dev This function makes it easy to read the `allowed[]` map
* @param _owner The address of the account that owns the token
* @param _spender The address of the account able to transfer the tokens
* @return Amount of remaining tokens of _owner that _spender is allowed
* to spend
*/
function allowance(
address _owner,
address _spender
)
public
constant
external
view
returns (uint256 remaining)
{
return allowed[_owner][_spender];
}
/// @notice `msg.sender` approves `_spender` to send `_amount` tokens on
/// its behalf, and then a function is triggered in the contract that is
/// being approved, `_spender`. This allows users to use their tokens to
/// interact with contracts in one function call instead of two
/// @param _spender The address of the contract able to transfer the tokens
/// @param _amount The amount of tokens to be approved for transfer
/// @return True if the function call was successful
/**
* @notice `msg.sender` approves `_spender` to send `_amount` tokens on
* its behalf, and then a function is triggered in the contract that is
* being approved, `_spender`. This allows users to use their tokens to
* interact with contracts in one function call instead of two
* @param _spender The address of the contract able to transfer the tokens
* @param _amount The amount of tokens to be approved for transfer
* @return True if the function call was successful
*/
function approveAndCall(
address _spender,
uint256 _amount,
bytes _extraData
)
public
external
returns (bool success)
{
require(approve(_spender, _amount));
require(doApprove(msg.sender, _spender, _amount));
ApproveAndCallFallBack(_spender).receiveApproval(
msg.sender,
@ -291,9 +321,11 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
return true;
}
/// @dev This function makes it easy to get the total number of tokens
/// @return The total number of tokens
function totalSupply() public constant returns (uint) {
/**
* @dev This function makes it easy to get the total number of tokens
* @return The total number of tokens
*/
function totalSupply() external view returns (uint) {
return totalSupplyAt(block.number);
}
@ -302,16 +334,18 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// Query balance and totalSupply in History
////////////////
/// @dev Queries the balance of `_owner` at a specific `_blockNumber`
/// @param _owner The address from which the balance will be retrieved
/// @param _blockNumber The block number when the balance is queried
/// @return The balance at `_blockNumber`
/**
* @dev Queries the balance of `_owner` at a specific `_blockNumber`
* @param _owner The address from which the balance will be retrieved
* @param _blockNumber The block number when the balance is queried
* @return The balance at `_blockNumber`
*/
function balanceOfAt(
address _owner,
uint _blockNumber
)
public
constant
view
returns (uint)
{
@ -335,10 +369,12 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
}
}
/// @notice Total amount of tokens at a specific `_blockNumber`.
/// @param _blockNumber The block number when the totalSupply is queried
/// @return The total amount of tokens at `_blockNumber`
function totalSupplyAt(uint _blockNumber) public constant returns(uint) {
/**
* @notice Total amount of tokens at a specific `_blockNumber`.
* @param _blockNumber The block number when the totalSupply is queried
* @return The total amount of tokens at `_blockNumber`
*/
function totalSupplyAt(uint _blockNumber) public view returns(uint) {
// These next few lines are used when the totalSupply of the token is
// requested before a check point was ever created for this token, it
@ -363,16 +399,18 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// Clone Token Method
////////////////
/// @notice Creates a new clone token with the initial distribution being
/// this token at `_snapshotBlock`
/// @param _cloneTokenName Name of the clone token
/// @param _cloneDecimalUnits Number of decimals of the smallest unit
/// @param _cloneTokenSymbol Symbol of the clone token
/// @param _snapshotBlock Block when the distribution of the parent token is
/// copied to set the initial distribution of the new clone token;
/// if the block is zero than the actual block, the current block is used
/// @param _transfersEnabled True if transfers are allowed in the clone
/// @return The address of the new MiniMeToken Contract
/**
* @notice Creates a new clone token with the initial distribution being
* this token at `snapshotBlock`
* @param _cloneTokenName Name of the clone token
* @param _cloneDecimalUnits Number of decimals of the smallest unit
* @param _cloneTokenSymbol Symbol of the clone token
* @param snapshotBlock Block when the distribution of the parent token is
* copied to set the initial distribution of the new clone token;
* if the block is zero than the actual block, the current block is used
* @param _transfersEnabled True if transfers are allowed in the clone
* @return The address of the new MiniMeToken Contract
*/
function createCloneToken(
string _cloneTokenName,
uint8 _cloneDecimalUnits,
@ -383,12 +421,13 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
public
returns(address)
{
if (_snapshotBlock == 0) {
_snapshotBlock = block.number;
uint snapshotBlock = _snapshotBlock;
if (snapshotBlock == 0) {
snapshotBlock = block.number;
}
MiniMeToken cloneToken = tokenFactory.createCloneToken(
this,
_snapshotBlock,
snapshotBlock,
_cloneTokenName,
_cloneDecimalUnits,
_cloneTokenSymbol,
@ -398,18 +437,20 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
cloneToken.changeController(msg.sender);
// An event to make the token easy to find on the blockchain
NewCloneToken(address(cloneToken), _snapshotBlock);
emit NewCloneToken(address(cloneToken), snapshotBlock);
return address(cloneToken);
}
////////////////
// Generate and destroy tokens
////////////////
/// @notice Generates `_amount` tokens that are assigned to `_owner`
/// @param _owner The address that will be assigned the new tokens
/// @param _amount The quantity of tokens generated
/// @return True if the tokens are generated correctly
/**
* @notice Generates `_amount` tokens that are assigned to `_owner`
* @param _owner The address that will be assigned the new tokens
* @param _amount The quantity of tokens generated
* @return True if the tokens are generated correctly
*/
function generateTokens(
address _owner,
uint _amount
@ -418,21 +459,22 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
onlyController
returns (bool)
{
uint curTotalSupply = totalSupply();
uint curTotalSupply = totalSupplyAt(block.number);
require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
uint previousBalanceTo = balanceOf(_owner);
uint previousBalanceTo = balanceOfAt(_owner, block.number);
require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
updateValueAtNow(balances[_owner], previousBalanceTo + _amount);
Transfer(0, _owner, _amount);
emit Transfer(0, _owner, _amount);
return true;
}
/// @notice Burns `_amount` tokens from `_owner`
/// @param _owner The address that will lose the tokens
/// @param _amount The quantity of tokens to burn
/// @return True if the tokens are burned correctly
/**
* @notice Burns `_amount` tokens from `_owner`
* @param _owner The address that will lose the tokens
* @param _amount The quantity of tokens to burn
* @return True if the tokens are burned correctly
*/
function destroyTokens(
address _owner,
uint _amount
@ -441,13 +483,13 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
onlyController
returns (bool)
{
uint curTotalSupply = totalSupply();
uint curTotalSupply = totalSupplyAt(block.number);
require(curTotalSupply >= _amount);
uint previousBalanceFrom = balanceOf(_owner);
uint previousBalanceFrom = balanceOfAt(_owner, block.number);
require(previousBalanceFrom >= _amount);
updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
updateValueAtNow(balances[_owner], previousBalanceFrom - _amount);
Transfer(_owner, 0, _amount);
emit Transfer(_owner, 0, _amount);
return true;
}
@ -455,9 +497,10 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// Enable tokens transfers
////////////////
/// @notice Enables token holders to transfer their tokens freely if true
/// @param _transfersEnabled True if transfers are allowed in the clone
/**
* @notice Enables token holders to transfer their tokens freely if true
* @param _transfersEnabled True if transfers are allowed in the clone
*/
function enableTransfers(bool _transfersEnabled) public onlyController {
transfersEnabled = _transfersEnabled;
}
@ -466,10 +509,12 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// Internal helper functions to query and set a value in a snapshot array
////////////////
/// @dev `getValueAt` retrieves the number of tokens at a given block number
/// @param checkpoints The history of values being queried
/// @param _block The block number to retrieve the value at
/// @return The number of tokens being queried
/**
* @dev `getValueAt` retrieves the number of tokens at a given block number
* @param checkpoints The history of values being queried
* @param _block The block number to retrieve the value at
* @return The number of tokens being queried
*/
function getValueAt(
Checkpoint[] storage checkpoints,
uint _block
@ -479,7 +524,7 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
returns (uint)
{
if (checkpoints.length == 0) {
return 0;
return 0;
}
// Shortcut for the actual value
@ -504,26 +549,30 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
return checkpoints[min].value;
}
/// @dev `updateValueAtNow` used to update the `balances` map and the
/// `totalSupplyHistory`
/// @param checkpoints The history of data being updated
/// @param _value The new number of tokens
/**
* @dev `updateValueAtNow` used to update the `balances` map and the
* `totalSupplyHistory`
* @param checkpoints The history of data being updated
* @param _value The new number of tokens
*/
function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value) internal {
if ((checkpoints.length == 0)
|| (checkpoints[checkpoints.length -1].fromBlock < block.number)) {
Checkpoint storage newCheckPoint = checkpoints[ checkpoints.length++ ];
newCheckPoint.fromBlock = uint128(block.number);
newCheckPoint.value = uint128(_value);
} else {
Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length-1];
oldCheckPoint.value = uint128(_value);
}
Checkpoint storage newCheckPoint = checkpoints[checkpoints.length++];
newCheckPoint.fromBlock = uint128(block.number);
newCheckPoint.value = uint128(_value);
} else {
Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length-1];
oldCheckPoint.value = uint128(_value);
}
}
/// @dev Internal function to determine if an address is a contract
/// @param _addr The address being queried
/// @return True if `_addr` is a contract
function isContract(address _addr) constant internal returns(bool) {
/**
* @dev Internal function to determine if an address is a contract
* @param _addr The address being queried
* @return True if `_addr` is a contract
*/
function isContract(address _addr) internal view returns(bool) {
uint size;
if (_addr == 0){
return false;
@ -534,14 +583,18 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
return size>0;
}
/// @dev Helper function to return a min betwen the two uints
/**
* @dev Helper function to return a min betwen the two uints
*/
function min(uint a, uint b) internal returns (uint) {
return a < b ? a : b;
}
/// @notice The fallback function: If the contract's controller has not been
/// set to 0, then the `proxyPayment` method is called which relays the
/// ether and creates tokens as described in the token controller contract
/**
* @notice The fallback function: If the contract's controller has not been
* set to 0, then the `proxyPayment` method is called which relays the
* ether and creates tokens as described in the token controller contract
*/
function () public payable {
require(isContract(controller));
require(TokenController(controller).proxyPayment.value(msg.value)(msg.sender));
@ -551,20 +604,22 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
// Safety Methods
//////////
/// @notice This method can be used by the controller to extract mistakenly
/// sent tokens to this contract.
/// @param _token The address of the token contract that you want to recover
/// set to 0 in case you want to extract ether.
/**
* @notice This method can be used by the controller to extract mistakenly
* sent tokens to this contract.
* @param _token The address of the token contract that you want to recover
* set to 0 in case you want to extract ether.
*/
function claimTokens(address _token) public onlyController {
if (_token == 0x0) {
controller.transfer(this.balance);
controller.transfer(address(this).balance);
return;
}
MiniMeToken token = MiniMeToken(_token);
uint balance = token.balanceOf(this);
uint balance = token.balanceOf(address(this));
token.transfer(controller, balance);
ClaimedTokens(_token, controller, balance);
emit ClaimedTokens(_token, controller, balance);
}
////////////////
@ -572,11 +627,11 @@ contract MiniMeToken is MiniMeTokenInterface, Controlled {
////////////////
event ClaimedTokens(address indexed _token, address indexed _controller, uint _amount);
event Transfer(address indexed _from, address indexed _to, uint256 _amount);
event NewCloneToken(address indexed _cloneToken, uint _snapshotBlock);
event NewCloneToken(address indexed _cloneToken, uint snapshotBlock);
event Approval(
address indexed _owner,
address indexed _spender,
uint256 _amount
);
);
}

30
contracts/token/MiniMeTokenFactory.sol
View File

@ -6,21 +6,25 @@ import "./MiniMeToken.sol";
// MiniMeTokenFactory
////////////////
/// @dev This contract is used to generate clone contracts from a contract.
/// In solidity this is the way to create a contract from a contract of the
/// same class
/**
* @dev This contract is used to generate clone contracts from a contract.
* In solidity this is the way to create a contract from a contract of the
* same class
*/
contract MiniMeTokenFactory {
/// @notice Update the DApp by creating a new token with new functionalities
/// the msg.sender becomes the controller of this clone token
/// @param _parentToken Address of the token being cloned
/// @param _snapshotBlock Block of the parent token that will
/// determine the initial distribution of the clone token
/// @param _tokenName Name of the new token
/// @param _decimalUnits Number of decimals of the new token
/// @param _tokenSymbol Token Symbol for the new token
/// @param _transfersEnabled If true, tokens will be able to be transferred
/// @return The address of the new token contract
/**
* @notice Update the DApp by creating a new token with new functionalities
* the msg.sender becomes the controller of this clone token
* @param _parentToken Address of the token being cloned
* @param _snapshotBlock Block of the parent token that will
* determine the initial distribution of the clone token
* @param _tokenName Name of the new token
* @param _decimalUnits Number of decimals of the new token
* @param _tokenSymbol Token Symbol for the new token
* @param _transfersEnabled If true, tokens will be able to be transferred
* @return The address of the new token contract
*/
function createCloneToken(
address _parentToken,
uint _snapshotBlock,

137
contracts/token/MiniMeTokenInterface.sol
View File

@ -1,49 +1,19 @@
pragma solidity ^0.4.17;
contract MiniMeTokenInterface {
import "./ERC20Token.sol";
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
/// @dev This function makes it easy to get the total number of tokens
/// @return The total number of tokens
function totalSupply() public constant returns (uint);
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public constant returns (uint256 balance);
contract MiniMeTokenInterface is ERC20Token {
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public constant returns (uint256 remaining);
/// @notice `msg.sender` approves `_spender` to send `_amount` tokens on
/// its behalf, and then a function is triggered in the contract that is
/// being approved, `_spender`. This allows users to use their tokens to
/// interact with contracts in one function call instead of two
/// @param _spender The address of the contract able to transfer the tokens
/// @param _amount The amount of tokens to be approved for transfer
/// @return True if the function call was successful
/**
* @notice `msg.sender` approves `_spender` to send `_amount` tokens on
* its behalf, and then a function is triggered in the contract that is
* being approved, `_spender`. This allows users to use their tokens to
* interact with contracts in one function call instead of two
* @param _spender The address of the contract able to transfer the tokens
* @param _amount The amount of tokens to be approved for transfer
* @return True if the function call was successful
*/
function approveAndCall(
address _spender,
uint256 _amount,
@ -52,17 +22,18 @@ contract MiniMeTokenInterface {
public
returns (bool success);
/// @notice Creates a new clone token with the initial distribution being
/// this token at `_snapshotBlock`
/// @param _cloneTokenName Name of the clone token
/// @param _cloneDecimalUnits Number of decimals of the smallest unit
/// @param _cloneTokenSymbol Symbol of the clone token
/// @param _snapshotBlock Block when the distribution of the parent token is
/// copied to set the initial distribution of the new clone token;
/// if the block is zero than the actual block, the current block is used
/// @param _transfersEnabled True if transfers are allowed in the clone
/// @return The address of the new MiniMeToken Contract
/**
* @notice Creates a new clone token with the initial distribution being
* this token at `_snapshotBlock`
* @param _cloneTokenName Name of the clone token
* @param _cloneDecimalUnits Number of decimals of the smallest unit
* @param _cloneTokenSymbol Symbol of the clone token
* @param _snapshotBlock Block when the distribution of the parent token is
* copied to set the initial distribution of the new clone token;
* if the block is zero than the actual block, the current block is used
* @param _transfersEnabled True if transfers are allowed in the clone
* @return The address of the new MiniMeToken Contract
*/
function createCloneToken(
string _cloneTokenName,
uint8 _cloneDecimalUnits,
@ -72,11 +43,13 @@ contract MiniMeTokenInterface {
)
public
returns(address);
/// @notice Generates `_amount` tokens that are assigned to `_owner`
/// @param _owner The address that will be assigned the new tokens
/// @param _amount The quantity of tokens generated
/// @return True if the tokens are generated correctly
/**
* @notice Generates `_amount` tokens that are assigned to `_owner`
* @param _owner The address that will be assigned the new tokens
* @param _amount The quantity of tokens generated
* @return True if the tokens are generated correctly
*/
function generateTokens(
address _owner,
uint _amount
@ -84,10 +57,12 @@ contract MiniMeTokenInterface {
public
returns (bool);
/// @notice Burns `_amount` tokens from `_owner`
/// @param _owner The address that will lose the tokens
/// @param _amount The quantity of tokens to burn
/// @return True if the tokens are burned correctly
/**
* @notice Burns `_amount` tokens from `_owner`
* @param _owner The address that will lose the tokens
* @param _amount The quantity of tokens to burn
* @return True if the tokens are burned correctly
*/
function destroyTokens(
address _owner,
uint _amount
@ -95,22 +70,26 @@ contract MiniMeTokenInterface {
public
returns (bool);
/// @notice Enables token holders to transfer their tokens freely if true
/// @param _transfersEnabled True if transfers are allowed in the clone
/**
* @notice Enables token holders to transfer their tokens freely if true
* @param _transfersEnabled True if transfers are allowed in the clone
*/
function enableTransfers(bool _transfersEnabled) public;
/// @notice This method can be used by the controller to extract mistakenly
/// sent tokens to this contract.
/// @param _token The address of the token contract that you want to recover
/// set to 0 in case you want to extract ether.
/**
* @notice This method can be used by the controller to extract mistakenly
* sent tokens to this contract.
* @param _token The address of the token contract that you want to recover
* set to 0 in case you want to extract ether.
*/
function claimTokens(address _token) public;
/// @dev Queries the balance of `_owner` at a specific `_blockNumber`
/// @param _owner The address from which the balance will be retrieved
/// @param _blockNumber The block number when the balance is queried
/// @return The balance at `_blockNumber`
/**
* @dev Queries the balance of `_owner` at a specific `_blockNumber`
* @param _owner The address from which the balance will be retrieved
* @param _blockNumber The block number when the balance is queried
* @return The balance at `_blockNumber`
*/
function balanceOfAt(
address _owner,
uint _blockNumber
@ -119,11 +98,11 @@ contract MiniMeTokenInterface {
constant
returns (uint);
/// @notice Total amount of tokens at a specific `_blockNumber`.
/// @param _blockNumber The block number when the totalSupply is queried
/// @return The total amount of tokens at `_blockNumber`
function totalSupplyAt(uint _blockNumber) public constant returns(uint);
/**
* @notice Total amount of tokens at a specific `_blockNumber`.
* @param _blockNumber The block number when the totalSupply is queried
* @return The total amount of tokens at `_blockNumber`
*/
function totalSupplyAt(uint _blockNumber) public view returns(uint);
}

41
contracts/token/TokenController.sol
View File

@ -1,26 +1,33 @@
pragma solidity ^0.4.14;
/// @dev The token controller contract must implement these functions
/**
* @dev The token controller contract must implement these functions
*/
contract TokenController {
/// @notice Called when `_owner` sends ether to the MiniMe Token contract
/// @param _owner The address that sent the ether to create tokens
/// @return True if the ether is accepted, false if it throws
/**
* @notice Called when `_owner` sends ether to the MiniMe Token contract
* @param _owner The address that sent the ether to create tokens
* @return True if the ether is accepted, false if it throws
*/
function proxyPayment(address _owner) payable returns(bool);
/// @notice Notifies the controller about a token transfer allowing the
/// controller to react if desired
/// @param _from The origin of the transfer
/// @param _to The destination of the transfer
/// @param _amount The amount of the transfer
/// @return False if the controller does not authorize the transfer
/**
* @notice Notifies the controller about a token transfer allowing the
* controller to react if desired
* @param _from The origin of the transfer
* @param _to The destination of the transfer
* @param _amount The amount of the transfer
* @return False if the controller does not authorize the transfer
*/
function onTransfer(address _from, address _to, uint _amount) returns(bool);
/// @notice Notifies the controller about an approval allowing the
/// controller to react if desired
/// @param _owner The address that calls `approve()`
/// @param _spender The spender in the `approve()` call
/// @param _amount The amount in the `approve()` call
/// @return False if the controller does not authorize the approval
/**
* @notice Notifies the controller about an approval allowing the
* controller to react if desired
* @param _owner The address that calls `approve()`
* @param _spender The spender in the `approve()` call
* @param _amount The amount in the `approve()` call
* @return False if the controller does not authorize the approval
*/
function onApprove(address _owner, address _spender, uint _amount)
returns(bool);
}