Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- ExponentialCurve
- Optimization enabled
- true
- Compiler version
- v0.8.13+commit.abaa5c0e
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2024-01-31T11:35:24.775298Z
contracts/v2/bonding-curves/ExponentialCurve.sol
// SPDX-License-Identifier: AGPL-3.0pragma solidity ^0.8.0;import {ICurve} from "./ICurve.sol";import {CurveErrorCodes} from "./CurveErrorCodes.sol";import {FixedPointMathLib} from "@rari-capital/solmate/src/utils/FixedPointMathLib.sol";/*@author 0xmons and boredGenius@notice Bonding curve logic for an exponential curve, where each buy/sell changes spot price by multiplying/dividing delta*/contract ExponentialCurve is ICurve, CurveErrorCodes {using FixedPointMathLib for uint256;// minimum price to prevent numerical issuesuint256 public constant MIN_PRICE = 1 gwei;/**@dev See {ICurve-validateDelta}*/function validateDelta(uint128 delta)externalpureoverridereturns (bool){return delta > FixedPointMathLib.WAD;}/**@dev See {ICurve-validateSpotPrice}*/function validateSpotPrice(uint128 newSpotPrice)externalpureoverridereturns (bool){return newSpotPrice >= MIN_PRICE;}
contracts/v2/bonding-curves/CurveErrorCodes.sol
// SPDX-License-Identifier: AGPL-3.0pragma solidity ^0.8.0;contract CurveErrorCodes {enum Error {OK, // No errorINVALID_NUMITEMS, // The numItem value is 0SPOT_PRICE_OVERFLOW // The updated spot price doesn't fit into 128 bits}/*** @return totalProtocolFeeMultiplier totalProtocol fee multiplier* @return totalProtocolFeeAmount total protocol fee amount* @return protocolFeeAmount protocol fee amount* @return protocolFeeReceiver protocol fee receiver*/struct ProtocolFeeStruct {uint totalProtocolFeeMultiplier;uint totalProtocolFeeAmount;uint[] protocolFeeAmount;address[] protocolFeeReceiver;}}
contracts/v2/bonding-curves/ICurve.sol
// SPDX-License-Identifier: AGPL-3.0pragma solidity ^0.8.0;import {CurveErrorCodes} from "./CurveErrorCodes.sol";interface ICurve {/**@notice Validates if a delta value is valid for the curve. The criteria forvalidity can be different for each type of curve, for instance ExponentialCurverequires delta to be greater than 1.@param delta The delta value to be validated@return valid True if delta is valid, false otherwise*/function validateDelta(uint128 delta) external pure returns (bool valid);/**@notice Validates if a new spot price is valid for the curve. Spot price is generally assumed to be the immediate sell price of 1 NFT to the pool, in units of the pool's paired token.@param newSpotPrice The new spot price to be set@return valid True if the new spot price is valid, false otherwise*/function validateSpotPrice(uint128 newSpotPrice)externalviewreturns (bool valid);/**@notice Given the current state of the pair and the trade, computes how much the usershould pay to purchase an NFT from the pair, the new spot price, and other values.@param spotPrice The current selling spot price of the pair, in tokens@param delta The delta parameter of the pair, what it means depends on the curve@param numItems The number of NFTs the user is buying from the pair@param feeMultiplier Determines how much fee the LP takes from this trade, 18 decimals@param protocolFeeMultipliers protocol fee multipliers@return error Any math calculation errors, only Error.OK means the returned values are valid@return newSpotPrice The updated selling spot price, in tokens@return newDelta The updated delta, used to parameterize the bonding curve@return inputValue The amount that the user should pay, in tokens@return protocolFeeStruct protocol fee struct*/function getBuyInfo(
@rari-capital/solmate/src/utils/FixedPointMathLib.sol
// SPDX-License-Identifier: AGPL-3.0-onlypragma solidity >=0.8.0;/// @notice Arithmetic library with operations for fixed-point numbers./// @author Modified from Dappsys V2 (https://github.com/dapp-org/dappsys-v2/blob/main/src/math.sol)/// and ABDK (https://github.com/abdk-consulting/abdk-libraries-solidity/blob/master/ABDKMath64x64.sol)library FixedPointMathLib {/*///////////////////////////////////////////////////////////////COMMON BASE UNITS//////////////////////////////////////////////////////////////*/uint256 internal constant YAD = 1e8;uint256 internal constant WAD = 1e18;uint256 internal constant RAY = 1e27;uint256 internal constant RAD = 1e45;/*///////////////////////////////////////////////////////////////FIXED POINT OPERATIONS//////////////////////////////////////////////////////////////*/function fmul(uint256 x,uint256 y,uint256 baseUnit) internal pure returns (uint256 z) {assembly {// Store x * y in z for now.z := mul(x, y)// Equivalent to require(x == 0 || (x * y) / x == y)if iszero(or(iszero(x), eq(div(z, x), y))) {revert(0, 0)}// If baseUnit is zero this will return zero instead of reverting.z := div(z, baseUnit)}}function fdiv(uint256 x,
Compiler Settings
{"outputSelection":{"*":{"*":["*"],"":["*"]}},"optimizer":{"runs":200,"enabled":true,"details":{"yul":false}},"libraries":{}}
Contract ABI
[{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"MIN_PRICE","inputs":[]},{"type":"function","stateMutability":"pure","outputs":[{"type":"uint8","name":"error","internalType":"enum CurveErrorCodes.Error"},{"type":"uint128","name":"newSpotPrice","internalType":"uint128"},{"type":"uint128","name":"newDelta","internalType":"uint128"},{"type":"uint256","name":"inputValue","internalType":"uint256"},{"type":"tuple","name":"protocolFeeStruct","internalType":"struct CurveErrorCodes.ProtocolFeeStruct","components":[{"type":"uint256","name":"totalProtocolFeeMultiplier","internalType":"uint256"},{"type":"uint256","name":"totalProtocolFeeAmount","internalType":"uint256"},{"type":"uint256[]","name":"protocolFeeAmount","internalType":"uint256[]"},{"type":"address[]","name":"protocolFeeReceiver","internalType":"address[]"}]}],"name":"getBuyInfo","inputs":[{"type":"uint128","name":"spotPrice","internalType":"uint128"},{"type":"uint128","name":"delta","internalType":"uint128"},{"type":"uint256","name":"numItems","internalType":"uint256"},{"type":"uint256","name":"feeMultiplier","internalType":"uint256"},{"type":"uint256[]","name":"protocolFeeMultipliers","internalType":"uint256[]"}]},{"type":"function","stateMutability":"pure","outputs":[{"type":"uint8","name":"error","internalType":"enum CurveErrorCodes.Error"},{"type":"uint128","name":"newSpotPrice","internalType":"uint128"},{"type":"uint128","name":"newDelta","internalType":"uint128"},{"type":"uint256","name":"outputValue","internalType":"uint256"},{"type":"tuple","name":"protocolFeeStruct","internalType":"struct CurveErrorCodes.ProtocolFeeStruct","components":[{"type":"uint256","name":"totalProtocolFeeMultiplier","internalType":"uint256"},{"type":"uint256","name":"totalProtocolFeeAmount","internalType":"uint256"},{"type":"uint256[]","name":"protocolFeeAmount","internalType":"uint256[]"},{"type":"address[]","name":"protocolFeeReceiver","internalType":"address[]"}]}],"name":"getSellInfo","inputs":[{"type":"uint128","name":"spotPrice","internalType":"uint128"},{"type":"uint128","name":"delta","internalType":"uint128"},{"type":"uint256","name":"numItems","internalType":"uint256"},{"type":"uint256","name":"feeMultiplier","internalType":"uint256"},{"type":"uint256[]","name":"protocolFeeMultipliers","internalType":"uint256[]"}]},{"type":"function","stateMutability":"pure","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"validateDelta","inputs":[{"type":"uint128","name":"delta","internalType":"uint128"}]},{"type":"function","stateMutability":"pure","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"validateSpotPrice","inputs":[{"type":"uint128","name":"newSpotPrice","internalType":"uint128"}]}]
Contract Creation Code
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