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update to new solc + lint

This commit is contained in:
Ricardo Guilherme Schmidt 2018-01-24 02:25:40 +00:00
parent f51ae08fa9
commit 8bae559ec9
1 changed files with 132 additions and 85 deletions
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217
contracts/token/MiniMeToken.sol
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@ -1,6 +1,7 @@
pragma solidity ^0.4.11;
pragma solidity ^0.4.17;
import "../common/Controlled.sol";
import "./MiniMeTokenFactory.sol";
import "./TokenController.sol";
import "./ApproveAndCallFallBack.sol";
@ -36,13 +37,13 @@ contract MiniMeToken is Controlled {
string public name; //The Token's name: e.g. DigixDAO Tokens
uint8 public decimals; //Number of decimals of the smallest unit
string public symbol; //An identifier: e.g. REP
string public version = 'MMT_0.1'; //An arbitrary versioning scheme
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
struct Checkpoint {
struct Checkpoint {
// `fromBlock` is the block number that the value was generated from
uint128 fromBlock;
@ -104,7 +105,9 @@ contract MiniMeToken is Controlled {
uint8 _decimalUnits,
string _tokenSymbol,
bool _transfersEnabled
) {
)
public
{
tokenFactory = MiniMeTokenFactory(_tokenFactory);
name = _tokenName; // Set the name
decimals = _decimalUnits; // Set the decimals
@ -112,7 +115,7 @@ contract MiniMeToken is Controlled {
parentToken = MiniMeToken(_parentToken);
parentSnapShotBlock = _parentSnapShotBlock;
transfersEnabled = _transfersEnabled;
creationBlock = getBlockNumber();
creationBlock = block.number;
}
@ -124,8 +127,8 @@ contract MiniMeToken is Controlled {
/// @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) returns (bool success) {
if (!transfersEnabled) throw;
function transfer(address _to, uint256 _amount) public returns (bool success) {
require(transfersEnabled);
return doTransfer(msg.sender, _to, _amount);
}
@ -135,18 +138,26 @@ contract MiniMeToken is Controlled {
/// @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, uint256 _amount
) returns (bool success) {
function transferFrom(
address _from,
address _to,
uint256 _amount
)
public
returns (bool success)
{
// The controller of this contract can move tokens around at will,
// this is important to recognize! Confirm that you trust the
// controller of this contract, which in most situations should be
// another open source smart contract or 0x0
if (msg.sender != controller) {
if (!transfersEnabled) throw;
require(transfersEnabled);
// The standard ERC 20 transferFrom functionality
if (allowed[_from][msg.sender] < _amount) return false;
if (allowed[_from][msg.sender] < _amount) {
return false;
}
allowed[_from][msg.sender] -= _amount;
}
return doTransfer(_from, _to, _amount);
@ -158,29 +169,34 @@ contract MiniMeToken is Controlled {
/// @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, uint _amount
) internal returns(bool) {
function doTransfer(
address _from,
address _to,
uint _amount
)
internal
returns(bool)
{
if (_amount == 0) {
return true;
}
if (parentSnapShotBlock >= getBlockNumber()) throw;
require(parentSnapShotBlock < block.number);
// Do not allow transfer to 0x0 or the token contract itself
if ((_to == 0) || (_to == address(this))) throw;
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, getBlockNumber());
var previousBalanceFrom = balanceOfAt(_from, block.number);
if (previousBalanceFrom < _amount) {
return false;
}
// Alerts the token controller of the transfer
if (isContract(controller)) {
if (!TokenController(controller).onTransfer(_from, _to, _amount))
throw;
require(TokenController(controller).onTransfer(_from, _to, _amount));
}
// First update the balance array with the new value for the address
@ -189,8 +205,8 @@ contract MiniMeToken is Controlled {
// Then update the balance array with the new value for the address
// receiving the tokens
var previousBalanceTo = balanceOfAt(_to, getBlockNumber());
if (previousBalanceTo + _amount < previousBalanceTo) throw; // Check for overflow
var 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
@ -201,8 +217,8 @@ contract MiniMeToken is Controlled {
/// @param _owner The address that's balance is being requested
/// @return The balance of `_owner` at the current block
function balanceOf(address _owner) constant returns (uint256 balance) {
return balanceOfAt(_owner, getBlockNumber());
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfAt(_owner, block.number);
}
/// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
@ -211,19 +227,18 @@ contract MiniMeToken is Controlled {
/// @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) returns (bool success) {
if (!transfersEnabled) throw;
function approve(address _spender, uint256 _amount) public returns (bool success) {
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
if ((_amount!=0) && (allowed[msg.sender][_spender] !=0)) throw;
require((_amount == 0) || (allowed[msg.sender][_spender] == 0));
// Alerts the token controller of the approve function call
if (isContract(controller)) {
if (!TokenController(controller).onApprove(msg.sender, _spender, _amount))
throw;
require(TokenController(controller).onApprove(msg.sender, _spender, _amount));
}
allowed[msg.sender][_spender] = _amount;
@ -236,8 +251,14 @@ contract MiniMeToken is Controlled {
/// @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
) constant returns (uint256 remaining) {
function allowance(
address _owner,
address _spender
)
public
constant
returns (uint256 remaining)
{
return allowed[_owner][_spender];
}
@ -248,9 +269,15 @@ contract MiniMeToken is Controlled {
/// @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
) returns (bool success) {
if (!approve(_spender, _amount)) throw;
function approveAndCall(
address _spender,
uint256 _amount,
bytes _extraData
)
public
returns (bool success)
{
require(approve(_spender, _amount));
ApproveAndCallFallBack(_spender).receiveApproval(
msg.sender,
@ -264,8 +291,8 @@ contract MiniMeToken is Controlled {
/// @dev This function makes it easy to get the total number of tokens
/// @return The total number of tokens
function totalSupply() constant returns (uint) {
return totalSupplyAt(getBlockNumber());
function totalSupply() public constant returns (uint) {
return totalSupplyAt(block.number);
}
@ -277,8 +304,14 @@ contract MiniMeToken is Controlled {
/// @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) constant
returns (uint) {
function balanceOfAt(
address _owner,
uint _blockNumber
)
public
constant
returns (uint)
{
// These next few lines are used when the balance of the token is
// requested before a check point was ever created for this token, it
@ -303,7 +336,7 @@ contract MiniMeToken is 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) constant returns(uint) {
function totalSupplyAt(uint _blockNumber) public constant 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
@ -344,8 +377,13 @@ contract MiniMeToken is Controlled {
string _cloneTokenSymbol,
uint _snapshotBlock,
bool _transfersEnabled
) returns(address) {
if (_snapshotBlock == 0) _snapshotBlock = getBlockNumber();
)
public
returns(address)
{
if (_snapshotBlock == 0) {
_snapshotBlock = block.number;
}
MiniMeToken cloneToken = tokenFactory.createCloneToken(
this,
_snapshotBlock,
@ -370,13 +408,19 @@ contract MiniMeToken is Controlled {
/// @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
) onlyController returns (bool) {
uint curTotalSupply = getValueAt(totalSupplyHistory, getBlockNumber());
if (curTotalSupply + _amount < curTotalSupply) throw; // Check for overflow
function generateTokens(
address _owner,
uint _amount
)
public
onlyController
returns (bool)
{
uint curTotalSupply = totalSupply();
require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
uint previousBalanceTo = balanceOf(_owner);
require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
var previousBalanceTo = balanceOf(_owner);
if (previousBalanceTo + _amount < previousBalanceTo) throw; // Check for overflow
updateValueAtNow(balances[_owner], previousBalanceTo + _amount);
Transfer(0, _owner, _amount);
return true;
@ -387,13 +431,19 @@ contract MiniMeToken is Controlled {
/// @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
) onlyController returns (bool) {
uint curTotalSupply = getValueAt(totalSupplyHistory, getBlockNumber());
if (curTotalSupply < _amount) throw;
function destroyTokens(
address _owner,
uint _amount
)
public
onlyController
returns (bool)
{
uint curTotalSupply = totalSupply();
require(curTotalSupply >= _amount);
uint previousBalanceFrom = balanceOf(_owner);
require(previousBalanceFrom >= _amount);
updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
var previousBalanceFrom = balanceOf(_owner);
if (previousBalanceFrom < _amount) throw;
updateValueAtNow(balances[_owner], previousBalanceFrom - _amount);
Transfer(_owner, 0, _amount);
return true;
@ -406,7 +456,7 @@ contract MiniMeToken is Controlled {
/// @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) onlyController {
function enableTransfers(bool _transfersEnabled) public onlyController {
transfersEnabled = _transfersEnabled;
}
@ -418,20 +468,31 @@ contract MiniMeToken is Controlled {
/// @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
) constant internal returns (uint) {
if (checkpoints.length == 0) return 0;
function getValueAt(
Checkpoint[] storage checkpoints,
uint _block
)
constant
internal
returns (uint)
{
if (checkpoints.length == 0) {
return 0;
}
// Shortcut for the actual value
if (_block >= checkpoints[checkpoints.length-1].fromBlock)
if (_block >= checkpoints[checkpoints.length-1].fromBlock) {
return checkpoints[checkpoints.length-1].value;
if (_block < checkpoints[0].fromBlock) return 0;
}
if (_block < checkpoints[0].fromBlock) {
return 0;
}
// Binary search of the value in the array
uint min = 0;
uint max = checkpoints.length-1;
while (max > min) {
uint mid = (max + min + 1)/ 2;
uint mid = (max + min + 1) / 2;
if (checkpoints[mid].fromBlock<=_block) {
min = mid;
} else {
@ -445,15 +506,14 @@ contract MiniMeToken is Controlled {
/// `totalSupplyHistory`
/// @param checkpoints The history of data being updated
/// @param _value The new number of tokens
function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value
) internal {
function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value) internal {
if ((checkpoints.length == 0)
|| (checkpoints[checkpoints.length -1].fromBlock < getBlockNumber())) {
Checkpoint newCheckPoint = checkpoints[ checkpoints.length++ ];
newCheckPoint.fromBlock = uint128(getBlockNumber());
|| (checkpoints[checkpoints.length -1].fromBlock < block.number)) {
Checkpoint storage newCheckPoint = checkpoints[ checkpoints.length++ ];
newCheckPoint.fromBlock = uint128(block.number);
newCheckPoint.value = uint128(_value);
} else {
Checkpoint oldCheckPoint = checkpoints[checkpoints.length-1];
Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length-1];
oldCheckPoint.value = uint128(_value);
}
}
@ -463,7 +523,9 @@ contract MiniMeToken is Controlled {
/// @return True if `_addr` is a contract
function isContract(address _addr) constant internal returns(bool) {
uint size;
if (_addr == 0) return false;
if (_addr == 0){
return false;
}
assembly {
size := extcodesize(_addr)
}
@ -478,23 +540,9 @@ contract MiniMeToken is Controlled {
/// @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 () payable {
if (isContract(controller)) {
if (! TokenController(controller).proxyPayment.value(msg.value)(msg.sender))
throw;
} else {
throw;
}
}
//////////
// Testing specific methods
//////////
/// @notice This function is overridden by the test Mocks.
function getBlockNumber() internal constant returns (uint256) {
return block.number;
function () public payable {
require(isContract(controller));
require(TokenController(controller).proxyPayment.value(msg.value)(msg.sender));
}
//////////
@ -505,13 +553,13 @@ contract MiniMeToken is Controlled {
/// 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) onlyController {
function claimTokens(address _token) public onlyController {
if (_token == 0x0) {
controller.transfer(this.balance);
return;
}
ERC20Token token = ERC20Token(_token);
MiniMeToken token = MiniMeToken(_token);
uint balance = token.balanceOf(this);
token.transfer(controller, balance);
ClaimedTokens(_token, controller, balance);
@ -520,7 +568,6 @@ contract MiniMeToken is Controlled {
////////////////
// Events
////////////////
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);