cicnet/erc20-demurrage-token
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Add redistribution execution

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This commit is contained in:
nolash 2021-02-03 09:00:24 +01:00
parent b5d30e12ef
commit ea6990a84c
Signed by: lash
GPG Key ID: 21D2E7BB88C2A746
3 changed files with 30 additions and 16 deletions
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7
python/tests/test_basic.py
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@ -20,7 +20,7 @@ testdir = os.path.dirname(__file__)
#BLOCKTIME = 5 # seconds #BLOCKTIME = 5 # seconds
TAX_LEVEL = 10000 * 2 # 2% TAX_LEVEL = 10000 * 2 # 2%
#PERIOD = int(60/BLOCKTIME) * 60 * 24 * 30 # month #PERIOD = int(60/BLOCKTIME) * 60 * 24 * 30 # month
PERIOD = 2 PERIOD = 10
class Test(unittest.TestCase): class Test(unittest.TestCase):
@ -57,9 +57,9 @@ class Test(unittest.TestCase):
def test_hello(self): def test_hello(self):
self.assertEqual(self.contract.functions.actualPeriod().call(), 0)
self.eth_tester.mine_blocks(PERIOD)
self.assertEqual(self.contract.functions.actualPeriod().call(), 1) self.assertEqual(self.contract.functions.actualPeriod().call(), 1)
self.eth_tester.mine_blocks(PERIOD)
self.assertEqual(self.contract.functions.actualPeriod().call(), 2)
def test_mint(self): def test_mint(self):
@ -148,5 +148,6 @@ class Test(unittest.TestCase):
balance_bob_trunc = int(balance_bob/1000)*1000 balance_bob_trunc = int(balance_bob/1000)*1000
self.assertEqual(balance_bob_trunc, 500000) self.assertEqual(balance_bob_trunc, 500000)
if __name__ == '__main__': if __name__ == '__main__':
unittest.main() unittest.main()

2
solidity/Makefile
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@ -7,6 +7,8 @@ all:
test: all test: all
python ../python/tests/test_basic.py python ../python/tests/test_basic.py
python ../python/tests/test_period.py
python ../python/tests/test_redistribution.py
install: all install: all
cp -v RedistributedDemurrageToken.{json,bin} ../python/eth_address_declarator/data/ cp -v RedistributedDemurrageToken.{json,bin} ../python/eth_address_declarator/data/

37
solidity/RedistributedDemurrageToken.sol
View File

@ -21,10 +21,10 @@ contract RedistributedDemurrageToken {
event Transfer(address indexed _from, address indexed _to, uint256 _value); event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value);
event Mint(address indexed _minter, address indexed _beneficiary, uint256 _amount); event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
event Debug(uint256 _foo); //event Debug(uint256 _foo);
event Taxed(uint256 indexed _period); event Taxed(uint256 indexed _period);
event Redistribution(address indexed _account, uint256 indexed _period, uint256 _amount); event Redistribution(address indexed _account, uint256 indexed _period, uint256 _value);
constructor(string memory _name, string memory _symbol, uint32 _taxLevel, uint256 _period) { constructor(string memory _name, string memory _symbol, uint32 _taxLevel, uint256 _period) {
owner = msg.sender; owner = msg.sender;
@ -126,7 +126,7 @@ contract RedistributedDemurrageToken {
currentRedistribution &= 0x0000000000ffffffffffffffffffffffffffffffffffffffffffffffffffffff; currentRedistribution &= 0x0000000000ffffffffffffffffffffffffffffffffffffffffffffffffffffff;
currentRedistribution |= participants << 216; currentRedistribution |= participants << 216;
emit Debug(participants); //emit Debug(participants);
redistributions[redistributions.length-1] = bytes32(currentRedistribution); redistributions[redistributions.length-1] = bytes32(currentRedistribution);
} }
@ -183,29 +183,41 @@ contract RedistributedDemurrageToken {
return demurrageModifier; return demurrageModifier;
} }
function toReward(address _amount, uint256 _period) public view returns (uint256) { function toTaxPeriodAmount(uint256 _value, uint256 _period) public view returns (uint256) {
return 1000000 * (((1000000-taxLevel)/1000000) ** _period); uint256 valueFactor;
// TODO: doesn't work for solidity as floats are missing and using ints linearly increases the order of magnitude
// valueFactor = 1000000 * (((1000000-taxLevel)/1000000) ** _period);
valueFactor = 1000000;
for (uint256 i = 0; i < _period; i++) {
valueFactor = (valueFactor * taxLevel) / 1000000;
}
return (valueFactor * _value) / 1000000;
} }
function applyRedistributionOnAccount(address _account) public returns (bool) { function applyRedistributionOnAccount(address _account) public returns (bool) {
bytes32 periodRedistribution; bytes32 periodRedistribution;
uint256 supply; uint256 supply;
uint256 participants; uint256 participants;
uint256 baseValue;
uint256 value; uint256 value;
uint256 period; uint256 period;
period = accountPeriod(_account); period = accountPeriod(_account);
if (period >= actualPeriod()) { if (period == 0 || period >= actualPeriod()) {
return false; return false;
} }
periodRedistribution = redistributions[period-1];
participants = toRedistributionParticipants(periodRedistribution); participants = toRedistributionParticipants(periodRedistribution);
if (participants == 0) { if (participants == 0) {
// TODO: In this case we need to give back to everyone, so we need a total accounts counter // TODO: In this case we need to give back to everyone, so we need a total accounts counter
revert('0 participants'); revert('0 participants');
return true;
} }
supply = toRedistributionSupply(periodRedistribution); supply = toRedistributionSupply(periodRedistribution);
value = supply / participants; // TODO: Make sure value for balance increases round down, and that we can do a single allocation to a sink account with the difference. We can use the highest bit in "participants" for that.
baseValue = supply / participants;
value = toTaxPeriodAmount(baseValue, period);
account[_account] &= bytes32(0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff); account[_account] &= bytes32(0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff);
increaseBalance(_account, value); increaseBalance(_account, value);
@ -219,27 +231,26 @@ contract RedistributedDemurrageToken {
bool result; bool result;
applyTax(); applyTax();
applyRedistributionOnAccount(msg.sender);
// TODO: Prefer to truncate the result, instead it seems to round to nearest :/ // TODO: Prefer to truncate the result, instead it seems to round to nearest :/
baseValue = (_value * 1000000) / demurrageModifier; baseValue = (_value * 1000000) / demurrageModifier;
result = transferBase(msg.sender, _to, baseValue); result = transferBase(msg.sender, _to, baseValue);
applyRedistributionOnAccount(msg.sender);
return result; return result;
} }
function transferBase(address _from, address _to, uint256 _value) private returns (bool) { function transferBase(address _from, address _to, uint256 _value) private returns (bool) {
uint256 period; uint256 period;
if (!decreaseBalance(msg.sender, _value)) { if (!decreaseBalance(_from, _value)) {
revert('ERR_TX_DECREASEBALANCE'); revert('ERR_TX_DECREASEBALANCE');
} }
if (!increaseBalance(_to, _value)) { if (!increaseBalance(_to, _value)) {
revert('ERR_TX_INCREASEBALANCE'); revert('ERR_TX_INCREASEBALANCE');
} }
period = actualPeriod(); period = actualPeriod();
if (accountPeriod(_from) != period) { if (_value > 0 && accountPeriod(_from) != period) {
registerAccountPeriod(_from, period); registerAccountPeriod(_from, period);
} }
return true; return true;