30 lines
1.2 KiB
Solidity
30 lines
1.2 KiB
Solidity
|
pragma solidity >=0.6.12;
|
||
|
|
|
||
|
|
// Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
|
||
|
|
// SPDX-License-Identifier: AGPL-3.0-or-later
|
||
|
|
// File-version: 1
|
||
|
|
|
||
|
|
// Methods to detect tokens that are subject to continuous change, and
|
||
|
|
|
||
|
|
interface ITokenChangeRate {
|
||
|
|
// Time unit resolution for rate of change.
|
||
|
|
// A value of 0 indicates no rate of change,
|
||
|
|
function changeTimeUnit() external view returns(uint256);
|
||
|
|
|
||
|
|
// Rate of change per changeTimeUnit(), signed integer.
|
||
|
|
// An effective value of 0 indicates no rate of change.
|
||
|
|
function changeRate() external view returns (int256);
|
||
|
|
|
||
|
|
// Number of decimals with which the changeRate is defined.
|
||
|
|
// changeRate() should be divided by 10 ** changeRateDecimals() to obtain effective value
|
||
|
|
function changeRateDecimals() external view returns(uint8);
|
||
|
|
|
||
|
|
// Timestamp from when rate of change should be applied.
|
||
|
|
// A value of 0 indicates no rate of change,
|
||
|
|
function changeStartTime() external view returns(uint256);
|
||
|
|
|
||
|
|
// Calculate value with change rate applied for given amount of time units.
|
||
|
|
// Will calculate compounded change over the given amount of time units
|
||
|
|
function applyChange(int256 _value, uint256 _changeTimeUnits) external view returns(int256);
|
||
|
|
}
|