Update interfaces, add ERC5679 aliases

This commit is contained in:
lash 2023-03-26 07:26:02 +01:00
parent badfa4838a
commit d4906529a3
Signed by: lash
GPG Key ID: 21D2E7BB88C2A746
5 changed files with 89 additions and 37 deletions

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@ -1,6 +1,6 @@
[metadata] [metadata]
name = erc20-demurrage-token name = erc20-demurrage-token
version = 0.5.0 version = 0.5.1
description = ERC20 token with redistributed continual demurrage description = ERC20 token with redistributed continual demurrage
author = Louis Holbrook author = Louis Holbrook
author_email = dev@holbrook.no author_email = dev@holbrook.no

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@ -1,9 +1,9 @@
pragma solidity >= 0.8.0; pragma solidity >= 0.8.0;
import "aux/ABDKMath64x64.sol"; import "aux/ABDKMath64x64.sol";
// SPDX-License-Identifier: GPL-3.0-or-later // SPDX-License-Identifier: AGPL-3.0-or-later
contract DemurrageTokenSingleNocap { contract DemurrageTokenSingleNocap {
struct redistributionItem { struct redistributionItem {
@ -11,7 +11,7 @@ contract DemurrageTokenSingleNocap {
uint72 value; uint72 value;
uint64 demurrage; uint64 demurrage;
} }
redistributionItem[] public redistributions; // uint51(unused) | uint64(demurrageModifier) | uint36(participants) | uint72(value) | uint32(period) redistributionItem[] public redistributions;
// Account balances // Account balances
mapping (address => uint256) account; mapping (address => uint256) account;
@ -23,7 +23,7 @@ contract DemurrageTokenSingleNocap {
// Cached demurrage timestamp; the timestamp for which demurrageAmount was last calculated // Cached demurrage timestamp; the timestamp for which demurrageAmount was last calculated
uint256 public demurrageTimestamp; uint256 public demurrageTimestamp;
// Implements EIP172 // Implements EIP173
address public owner; address public owner;
address newOwner; address newOwner;
@ -37,8 +37,6 @@ contract DemurrageTokenSingleNocap {
// Implements ERC20 // Implements ERC20
uint256 public immutable decimals; uint256 public immutable decimals;
// Implements ERC20
//uint256 public totalSupply;
uint256 supply; uint256 supply;
// Last executed period // Last executed period
@ -48,7 +46,7 @@ contract DemurrageTokenSingleNocap {
uint256 public totalSink; uint256 public totalSink;
// Value of burnt tokens (burnt tokens do not decay) // Value of burnt tokens (burnt tokens do not decay)
uint256 public burned; uint256 burned;
// 128 bit resolution of the demurrage divisor // 128 bit resolution of the demurrage divisor
// (this constant x 1000000 is contained within 128 bits) // (this constant x 1000000 is contained within 128 bits)
@ -93,7 +91,7 @@ contract DemurrageTokenSingleNocap {
// Implements ERC20 // Implements ERC20
event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value);
// New tokens minted // Implements Minter
event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value); event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
// New demurrage cache milestone calculated // New demurrage cache milestone calculated
@ -109,23 +107,27 @@ contract DemurrageTokenSingleNocap {
//event Debug(bytes32 _foo); //event Debug(bytes32 _foo);
event Debug(int128 indexed _foo, uint256 indexed _bar); event Debug(int128 indexed _foo, uint256 indexed _bar);
// Emitted when tokens are burned // Implements Burn
event Burn(address indexed _burner, uint256 _value); event Burn(address indexed _burner, uint256 _value);
// EIP173 // EIP173
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // EIP173 event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // EIP173
// Implements Expire
event Expired(uint256 _timestamp); event Expired(uint256 _timestamp);
event Cap(uint256 indexed _oldCap, uint256 _newCap); event Cap(uint256 indexed _oldCap, uint256 _newCap);
// Implements Sealer // Implements Seal
uint256 public sealState; uint256 public sealState;
uint8 constant WRITER_STATE = 1; uint8 constant WRITER_STATE = 1;
uint8 constant SINK_STATE = 2; uint8 constant SINK_STATE = 2;
uint8 constant EXPIRY_STATE = 4; uint8 constant EXPIRY_STATE = 4;
uint8 constant CAP_STATE = 8; uint8 constant CAP_STATE = 8;
// Implements Seal
uint256 constant public maxSealState = 15; uint256 constant public maxSealState = 15;
// Implements Seal
event SealStateChange(bool indexed _final, uint256 _sealState); event SealStateChange(bool indexed _final, uint256 _sealState);
@ -157,7 +159,6 @@ contract DemurrageTokenSingleNocap {
sinkAddress = _defaultSinkAddress; sinkAddress = _defaultSinkAddress;
} }
// Implements Sealer
function seal(uint256 _state) public returns(uint256) { function seal(uint256 _state) public returns(uint256) {
require(_state < 16, 'ERR_INVALID_STATE'); require(_state < 16, 'ERR_INVALID_STATE');
require(_state & sealState == 0, 'ERR_ALREADY_LOCKED'); require(_state & sealState == 0, 'ERR_ALREADY_LOCKED');
@ -166,7 +167,6 @@ contract DemurrageTokenSingleNocap {
return uint256(sealState); return uint256(sealState);
} }
// Implements Sealer
function isSealed(uint256 _state) public view returns(bool) { function isSealed(uint256 _state) public view returns(bool) {
require(_state < maxSealState); require(_state < maxSealState);
if (_state == 0) { if (_state == 0) {
@ -175,6 +175,9 @@ contract DemurrageTokenSingleNocap {
return _state & sealState == _state; return _state & sealState == _state;
} }
// Set when token expires.
// Value is set it terms of redistribution periods.
// Cannot be set to a time in the past.
function setExpirePeriod(uint256 _expirePeriod) public { function setExpirePeriod(uint256 _expirePeriod) public {
uint256 r; uint256 r;
@ -186,6 +189,8 @@ contract DemurrageTokenSingleNocap {
expires = r; expires = r;
} }
// Change max token supply.
// Can only increase supply cap, not decrease.
function setMaxSupply(uint256 _cap) public { function setMaxSupply(uint256 _cap) public {
require(!isSealed(CAP_STATE)); require(!isSealed(CAP_STATE));
require(msg.sender == owner); require(msg.sender == owner);
@ -222,6 +227,7 @@ contract DemurrageTokenSingleNocap {
} }
// Given address will be allowed to call the mintTo() function // Given address will be allowed to call the mintTo() function
// Implements Writer
function addWriter(address _minter) public returns (bool) { function addWriter(address _minter) public returns (bool) {
require(!isSealed(WRITER_STATE)); require(!isSealed(WRITER_STATE));
require(msg.sender == owner); require(msg.sender == owner);
@ -230,6 +236,7 @@ contract DemurrageTokenSingleNocap {
} }
// Given address will no longer be allowed to call the mintTo() function // Given address will no longer be allowed to call the mintTo() function
// Implements Writer
function deleteWriter(address _minter) public returns (bool) { function deleteWriter(address _minter) public returns (bool) {
require(!isSealed(WRITER_STATE)); require(!isSealed(WRITER_STATE));
require(msg.sender == owner || _minter == msg.sender); require(msg.sender == owner || _minter == msg.sender);
@ -237,6 +244,11 @@ contract DemurrageTokenSingleNocap {
return true; return true;
} }
// Implements Writer
function isWriter(address _minter) public view returns(bool) {
return minter[_minter];
}
/// Implements ERC20 /// Implements ERC20
function balanceOf(address _account) public view returns (uint256) { function balanceOf(address _account) public view returns (uint256) {
int128 baseBalance; int128 baseBalance;
@ -301,7 +313,8 @@ contract DemurrageTokenSingleNocap {
// Creates new tokens out of thin air, and allocates them to the given address // Creates new tokens out of thin air, and allocates them to the given address
// Triggers tax // Triggers tax
function mintTo(address _beneficiary, uint256 _amount) external returns (bool) { // Implements Minter
function mintTo(address _beneficiary, uint256 _amount) public returns (bool) {
uint256 baseAmount; uint256 baseAmount;
require(applyExpiry() == 0); require(applyExpiry() == 0);
@ -320,6 +333,18 @@ contract DemurrageTokenSingleNocap {
return true; return true;
} }
// Implements Minter
function mint(address _beneficiary, uint256 _amount, bytes calldata _data) public {
_data;
mintTo(_beneficiary, _amount);
}
// Implements Minter
function safeMint(address _beneficiary, uint256 _amount, bytes calldata _data) public {
_data;
mintTo(_beneficiary, _amount);
}
// Deserializes the redistribution word // Deserializes the redistribution word
function toRedistribution(uint256 _participants, int128 _demurrageModifier, uint256 _value, uint256 _period) public pure returns(redistributionItem memory) { function toRedistribution(uint256 _participants, int128 _demurrageModifier, uint256 _value, uint256 _period) public pure returns(redistributionItem memory) {
redistributionItem memory redistribution; redistributionItem memory redistribution;
@ -508,6 +533,7 @@ contract DemurrageTokenSingleNocap {
return (block.timestamp - _target) / 60; return (block.timestamp - _target) / 60;
} }
// Equality check for empty redistribution data
function isEmptyRedistribution(redistributionItem memory _redistribution) public pure returns(bool) { function isEmptyRedistribution(redistributionItem memory _redistribution) public pure returns(bool) {
if (_redistribution.period > 0) { if (_redistribution.period > 0) {
return false; return false;
@ -545,7 +571,8 @@ contract DemurrageTokenSingleNocap {
return ABDKMath64x64.toUInt(r); return ABDKMath64x64.toUInt(r);
} }
// Implements ERC20, triggers tax and/or redistribution // Triggers tax and/or redistribution
// Implements ERC20
function approve(address _spender, uint256 _value) public returns (bool) { function approve(address _spender, uint256 _value) public returns (bool) {
uint256 baseValue; uint256 baseValue;
uint8 ex; uint8 ex;
@ -595,7 +622,8 @@ contract DemurrageTokenSingleNocap {
return true; return true;
} }
// Implements ERC20, triggers tax and/or redistribution // Triggers tax and/or redistribution
// Implements ERC20
function transfer(address _to, uint256 _value) public returns (bool) { function transfer(address _to, uint256 _value) public returns (bool) {
uint256 baseValue; uint256 baseValue;
bool result; bool result;
@ -615,7 +643,8 @@ contract DemurrageTokenSingleNocap {
return result; return result;
} }
// Implements ERC20, triggers tax and/or redistribution // Triggers tax and/or redistribution
// Implements ERC20
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
uint256 baseValue; uint256 baseValue;
bool result; bool result;
@ -649,25 +678,19 @@ contract DemurrageTokenSingleNocap {
// Implements EIP173 // Implements EIP173
function transferOwnership(address _newOwner) public returns (bool) { function transferOwnership(address _newOwner) public returns (bool) {
require(msg.sender == owner);
newOwner = _newOwner;
return true;
}
// Implements OwnedAccepter
function acceptOwnership() public returns (bool) {
address oldOwner; address oldOwner;
require(msg.sender == newOwner); require(msg.sender == owner);
oldOwner = owner; oldOwner = owner;
owner = newOwner; owner = _newOwner;
newOwner = address(0);
emit OwnershipTransferred(oldOwner, owner); emit OwnershipTransferred(oldOwner, owner);
return true; return true;
} }
// Explicitly and irretrievably burn tokens // Explicitly and irretrievably burn tokens
// Only token minters can burn tokens // Only token minters can burn tokens
// Implements Burner
function burn(uint256 _value) public returns(bool) { function burn(uint256 _value) public returns(bool) {
require(applyExpiry() == 0); require(applyExpiry() == 0);
require(minter[msg.sender] || msg.sender == owner, 'ERR_ACCESS'); require(minter[msg.sender] || msg.sender == owner, 'ERR_ACCESS');
@ -681,17 +704,31 @@ contract DemurrageTokenSingleNocap {
return true; return true;
} }
// Implements Burner
function burn(address _from, uint256 _value, bytes calldata _data) public {
require(_from == msg.sender, 'ERR_ONLY_SELF_BURN');
_data;
burn(_value);
}
// Implements Burner
function burn() public returns(bool) {
return burn(account[msg.sender]);
}
// Implements ERC20 // Implements ERC20
function totalSupply() public view returns (uint256) { function totalSupply() public view returns (uint256) {
return supply - burned; return supply - burned;
} }
// Return total number of burned tokens // Return total number of burned tokens
// Implements Burner
function totalBurned() public view returns (uint256) { function totalBurned() public view returns (uint256) {
return burned; return burned;
} }
// Return total number of tokens ever minted // Return total number of tokens ever minted
// Implements Burner
function totalMinted() public view returns (uint256) { function totalMinted() public view returns (uint256) {
return supply; return supply;
} }
@ -699,16 +736,31 @@ contract DemurrageTokenSingleNocap {
// Implements EIP165 // Implements EIP165
function supportsInterface(bytes4 _sum) public pure returns (bool) { function supportsInterface(bytes4 _sum) public pure returns (bool) {
if (_sum == 0xc6bb4b70) { // ERC20 if (_sum == 0xb61bc941) { // ERC20
return true; return true;
} }
if (_sum == 0x449a52f8) { // Minter if (_sum == 0x5878bcf4) { // Minter
return true; return true;
} }
if (_sum == 0x01ffc9a7) { // EIP165 if (_sum == 0xbc4babdd) { // Burner
return true; return true;
} }
if (_sum == 0x9493f8b2) { // EIP173 if (_sum == 0x0d7491f8) { // Seal
return true;
}
if (_sum == 0xabe1f1f5) { // Writer
return true;
}
if (_sum == 0xcb52c823) { // Expire
return true;
}
if (_sum == 0x01ffc9a7) { // ERC165
return true;
}
if (_sum == 0x9493f8b2) { // ERC173
return true;
}
if (_sum == 0xd0017968) { // ERC5678Ext20
return true; return true;
} }
return false; return false;