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Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- Vyper_contract
- Optimization enabled
- false
- Compiler version
- v0.3.1
- Verified at
- 2022-04-25T11:06:09.598667Z
Constructor Arguments
00000000000000000000000013f0b2a9691bb72cae72616b39e798a824f18271000000000000000000000000b74df76cc81755cbe03f47cb38696d2a4327ed8a000000000000000000000000f5e033984d3329105253afaa945cad388fbacd6e0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000b296bab2ed122a85977423b602ddf3527582a3da
Arg [0] (address) : 0x13f0b2a9691bb72cae72616b39e798a824f18271
Arg [1] (address) : 0xb74df76cc81755cbe03f47cb38696d2a4327ed8a
Arg [2] (address) : 0xf5e033984d3329105253afaa945cad388fbacd6e
Arg [3] (address) : 0x0000000000000000000000000000000000000000
Arg [4] (address) : 0xb296bab2ed122a85977423b602ddf3527582a3da
Contract source code
# @version 0.3.1
"""
@title Curve Factory
@license MIT
@author Curve.Fi
@notice Permissionless pool deployer and registry
"""
interface CryptoPool:
def balances(i: uint256) -> uint256: view
def initialize(
A: uint256,
gamma: uint256,
mid_fee: uint256,
out_fee: uint256,
allowed_extra_profit: uint256,
fee_gamma: uint256,
adjustment_step: uint256,
admin_fee: uint256,
ma_half_time: uint256,
initial_price: uint256,
_token: address,
_coins: address[2],
_precisions: uint256
): nonpayable
interface ERC20:
def decimals() -> uint256: view
interface LiquidityGauge:
def initialize(_lp_token: address): nonpayable
interface Token:
def initialize(_name: String[64], _symbol: String[32], _pool: address): nonpayable
event CryptoPoolDeployed:
token: address
coins: address[2]
A: uint256
gamma: uint256
mid_fee: uint256
out_fee: uint256
allowed_extra_profit: uint256
fee_gamma: uint256
adjustment_step: uint256
admin_fee: uint256
ma_half_time: uint256
initial_price: uint256
deployer: address
event LiquidityGaugeDeployed:
pool: address
token: address
gauge: address
event UpdateFeeReceiver:
_old_fee_receiver: address
_new_fee_receiver: address
event UpdatePoolImplementation:
_old_pool_implementation: address
_new_pool_implementation: address
event UpdateTokenImplementation:
_old_token_implementation: address
_new_token_implementation: address
event UpdateGaugeImplementation:
_old_gauge_implementation: address
_new_gauge_implementation: address
event TransferOwnership:
_old_owner: address
_new_owner: address
struct PoolArray:
token: address
liquidity_gauge: address
coins: address[2]
decimals: uint256
N_COINS: constant(int128) = 2
A_MULTIPLIER: constant(uint256) = 10000
# Limits
MAX_ADMIN_FEE: constant(uint256) = 10 * 10 ** 9
MIN_FEE: constant(uint256) = 5 * 10 ** 5 # 0.5 bps
MAX_FEE: constant(uint256) = 10 * 10 ** 9
MIN_GAMMA: constant(uint256) = 10 ** 10
MAX_GAMMA: constant(uint256) = 2 * 10 ** 16
MIN_A: constant(uint256) = N_COINS ** N_COINS * A_MULTIPLIER / 10
MAX_A: constant(uint256) = N_COINS ** N_COINS * A_MULTIPLIER * 100000
WETH: immutable(address)
admin: public(address)
future_admin: public(address)
# fee receiver for plain pools
fee_receiver: public(address)
pool_implementation: public(address)
token_implementation: public(address)
gauge_implementation: public(address)
# mapping of coins -> pools for trading
# a mapping key is generated for each pair of addresses via
# `bitwise_xor(convert(a, uint256), convert(b, uint256))`
markets: HashMap[uint256, address[4294967296]]
market_counts: HashMap[uint256, uint256]
pool_count: public(uint256) # actual length of pool_list
pool_data: HashMap[address, PoolArray]
pool_list: public(address[4294967296]) # master list of pools
@external
def __init__(
_fee_receiver: address,
_pool_implementation: address,
_token_implementation: address,
_gauge_implementation: address,
_weth: address
):
self.fee_receiver = _fee_receiver
self.pool_implementation = _pool_implementation
self.token_implementation = _token_implementation
self.gauge_implementation = _gauge_implementation
self.admin = msg.sender
WETH = _weth
log UpdateFeeReceiver(ZERO_ADDRESS, _fee_receiver)
log UpdatePoolImplementation(ZERO_ADDRESS, _pool_implementation)
log UpdateTokenImplementation(ZERO_ADDRESS, _token_implementation)
log UpdateGaugeImplementation(ZERO_ADDRESS, _gauge_implementation)
log TransferOwnership(ZERO_ADDRESS, msg.sender)
# <--- Pool Deployers --->
@external
def deploy_pool(
_name: String[32],
_symbol: String[10],
_coins: address[2],
A: uint256,
gamma: uint256,
mid_fee: uint256,
out_fee: uint256,
allowed_extra_profit: uint256,
fee_gamma: uint256,
adjustment_step: uint256,
admin_fee: uint256,
ma_half_time: uint256,
initial_price: uint256
) -> address:
"""
@notice Deploy a new pool
@param _name Name of the new plain pool
@param _symbol Symbol for the new plain pool - will be concatenated with factory symbol
Other parameters need some description
@return Address of the deployed pool
"""
# Validate parameters
assert A > MIN_A-1
assert A < MAX_A+1
assert gamma > MIN_GAMMA-1
assert gamma < MAX_GAMMA+1
assert mid_fee > MIN_FEE-1
assert mid_fee < MAX_FEE-1
assert out_fee >= mid_fee
assert out_fee < MAX_FEE-1
assert admin_fee < 10**18+1
assert allowed_extra_profit < 10**16+1
assert fee_gamma < 10**18+1
assert fee_gamma > 0
assert adjustment_step < 10**18+1
assert adjustment_step > 0
assert ma_half_time < 7 * 86400
assert ma_half_time > 0
assert initial_price > 10**6
assert initial_price < 10**30
assert _coins[0] != _coins[1], "Duplicate coins"
decimals: uint256[2] = empty(uint256[2])
for i in range(2):
d: uint256 = ERC20(_coins[i]).decimals()
assert d < 19, "Max 18 decimals for coins"
decimals[i] = d
precisions: uint256 = (18 - decimals[0]) + shift(18 - decimals[1], 8)
name: String[64] = concat("Curve.fi Factory Crypto Pool: ", _name)
symbol: String[32] = concat(_symbol, "-f")
token: address = create_forwarder_to(self.token_implementation)
pool: address = create_forwarder_to(self.pool_implementation)
Token(token).initialize(name, symbol, pool)
CryptoPool(pool).initialize(
A, gamma, mid_fee, out_fee, allowed_extra_profit, fee_gamma,
adjustment_step, admin_fee, ma_half_time, initial_price,
token, _coins, precisions)
length: uint256 = self.pool_count
self.pool_list[length] = pool
self.pool_count = length + 1
self.pool_data[pool].token = token
self.pool_data[pool].decimals = shift(decimals[0], 8) + decimals[1]
self.pool_data[pool].coins = _coins
key: uint256 = bitwise_xor(convert(_coins[0], uint256), convert(_coins[1], uint256))
length = self.market_counts[key]
self.markets[key][length] = pool
self.market_counts[key] = length + 1
log CryptoPoolDeployed(
token, _coins,
A, gamma, mid_fee, out_fee, allowed_extra_profit, fee_gamma,
adjustment_step, admin_fee, ma_half_time, initial_price,
msg.sender)
return pool
@external
def deploy_gauge(_pool: address) -> address:
"""
@notice Deploy a liquidity gauge for a factory pool
@param _pool Factory pool address to deploy a gauge for
@return Address of the deployed gauge
"""
assert self.pool_data[_pool].coins[0] != ZERO_ADDRESS, "Unknown pool"
assert self.pool_data[_pool].liquidity_gauge == ZERO_ADDRESS, "Gauge already deployed"
gauge: address = create_forwarder_to(self.gauge_implementation)
token: address = self.pool_data[_pool].token
LiquidityGauge(gauge).initialize(token)
self.pool_data[_pool].liquidity_gauge = gauge
log LiquidityGaugeDeployed(_pool, token, gauge)
return gauge
# <--- Admin / Guarded Functionality --->
@external
def set_fee_receiver(_fee_receiver: address):
"""
@notice Set fee receiver
@param _fee_receiver Address that fees are sent to
"""
assert msg.sender == self.admin # dev: admin only
log UpdateFeeReceiver(self.fee_receiver, _fee_receiver)
self.fee_receiver = _fee_receiver
@external
def set_pool_implementation(_pool_implementation: address):
"""
@notice Set pool implementation
@dev Set to ZERO_ADDRESS to prevent deployment of new pools
@param _pool_implementation Address of the new pool implementation
"""
assert msg.sender == self.admin # dev: admin only
log UpdatePoolImplementation(self.pool_implementation, _pool_implementation)
self.pool_implementation = _pool_implementation
@external
def set_token_implementation(_token_implementation: address):
"""
@notice Set token implementation
@dev Set to ZERO_ADDRESS to prevent deployment of new pools
@param _token_implementation Address of the new token implementation
"""
assert msg.sender == self.admin # dev: admin only
log UpdateTokenImplementation(self.token_implementation, _token_implementation)
self.token_implementation = _token_implementation
@external
def set_gauge_implementation(_gauge_implementation: address):
"""
@notice Set gauge implementation
@dev Set to ZERO_ADDRESS to prevent deployment of new gauges
@param _gauge_implementation Address of the new token implementation
"""
assert msg.sender == self.admin # dev: admin-only function
log UpdateGaugeImplementation(self.gauge_implementation, _gauge_implementation)
self.gauge_implementation = _gauge_implementation
@external
def commit_transfer_ownership(_addr: address):
"""
@notice Transfer ownership of this contract to `addr`
@param _addr Address of the new owner
"""
assert msg.sender == self.admin # dev: admin only
self.future_admin = _addr
@external
def accept_transfer_ownership():
"""
@notice Accept a pending ownership transfer
@dev Only callable by the new owner
"""
assert msg.sender == self.future_admin # dev: future admin only
log TransferOwnership(self.admin, msg.sender)
self.admin = msg.sender
# <--- Factory Getters --->
@view
@external
def find_pool_for_coins(_from: address, _to: address, i: uint256 = 0) -> address:
"""
@notice Find an available pool for exchanging two coins
@param _from Address of coin to be sent
@param _to Address of coin to be received
@param i Index value. When multiple pools are available
this value is used to return the n'th address.
@return Pool address
"""
key: uint256 = bitwise_xor(convert(_from, uint256), convert(_to, uint256))
return self.markets[key][i]
# <--- Pool Getters --->
@view
@external
def get_coins(_pool: address) -> address[2]:
"""
@notice Get the coins within a pool
@param _pool Pool address
@return List of coin addresses
"""
return self.pool_data[_pool].coins
@view
@external
def get_decimals(_pool: address) -> uint256[2]:
"""
@notice Get decimal places for each coin within a pool
@param _pool Pool address
@return uint256 list of decimals
"""
decimals: uint256 = self.pool_data[_pool].decimals
return [shift(decimals, -8), decimals % 256]
@view
@external
def get_balances(_pool: address) -> uint256[2]:
"""
@notice Get balances for each coin within a pool
@dev For pools using lending, these are the wrapped coin balances
@param _pool Pool address
@return uint256 list of balances
"""
return [CryptoPool(_pool).balances(0), CryptoPool(_pool).balances(1)]
@view
@external
def get_coin_indices(
_pool: address,
_from: address,
_to: address
) -> (uint256, uint256):
"""
@notice Convert coin addresses to indices for use with pool methods
@param _pool Pool address
@param _from Coin address to be used as `i` within a pool
@param _to Coin address to be used as `j` within a pool
@return uint256 `i`, uint256 `j`
"""
coins: address[2] = self.pool_data[_pool].coins
if _from == coins[0] and _to == coins[1]:
return 0, 1
elif _from == coins[1] and _to == coins[0]:
return 1, 0
else:
raise "Coins not found"
@view
@external
def get_gauge(_pool: address) -> address:
"""
@notice Get the address of the liquidity gauge contract for a factory pool
@dev Returns `ZERO_ADDRESS` if a gauge has not been deployed
@param _pool Pool address
@return Implementation contract address
"""
return self.pool_data[_pool].liquidity_gauge
@view
@external
def get_eth_index(_pool: address) -> uint256:
"""
@notice Get the index of WETH for a pool
@dev Returns MAX_UINT256 if WETH is not a coin in the pool
"""
for i in range(2):
if self.pool_data[_pool].coins[i] == WETH:
return i
return MAX_UINT256
@view
@external
def get_token(_pool: address) -> address:
"""
@notice Get the address of the LP token of a pool
"""
return self.pool_data[_pool].token
Contract ABI
[{"type":"event","name":"CryptoPoolDeployed","inputs":[{"type":"address","name":"token","indexed":false},{"type":"address[2]","name":"coins","indexed":false},{"type":"uint256","name":"A","indexed":false},{"type":"uint256","name":"gamma","indexed":false},{"type":"uint256","name":"mid_fee","indexed":false},{"type":"uint256","name":"out_fee","indexed":false},{"type":"uint256","name":"allowed_extra_profit","indexed":false},{"type":"uint256","name":"fee_gamma","indexed":false},{"type":"uint256","name":"adjustment_step","indexed":false},{"type":"uint256","name":"admin_fee","indexed":false},{"type":"uint256","name":"ma_half_time","indexed":false},{"type":"uint256","name":"initial_price","indexed":false},{"type":"address","name":"deployer","indexed":false}],"anonymous":false},{"type":"event","name":"LiquidityGaugeDeployed","inputs":[{"type":"address","name":"pool","indexed":false},{"type":"address","name":"token","indexed":false},{"type":"address","name":"gauge","indexed":false}],"anonymous":false},{"type":"event","name":"UpdateFeeReceiver","inputs":[{"type":"address","name":"_old_fee_receiver","indexed":false},{"type":"address","name":"_new_fee_receiver","indexed":false}],"anonymous":false},{"type":"event","name":"UpdatePoolImplementation","inputs":[{"type":"address","name":"_old_pool_implementation","indexed":false},{"type":"address","name":"_new_pool_implementation","indexed":false}],"anonymous":false},{"type":"event","name":"UpdateTokenImplementation","inputs":[{"type":"address","name":"_old_token_implementation","indexed":false},{"type":"address","name":"_new_token_implementation","indexed":false}],"anonymous":false},{"type":"event","name":"UpdateGaugeImplementation","inputs":[{"type":"address","name":"_old_gauge_implementation","indexed":false},{"type":"address","name":"_new_gauge_implementation","indexed":false}],"anonymous":false},{"type":"event","name":"TransferOwnership","inputs":[{"type":"address","name":"_old_owner","indexed":false},{"type":"address","name":"_new_owner","indexed":false}],"anonymous":false},{"type":"constructor","stateMutability":"nonpayable","outputs":[],"inputs":[{"type":"address","name":"_fee_receiver"},{"type":"address","name":"_pool_implementation"},{"type":"address","name":"_token_implementation"},{"type":"address","name":"_gauge_implementation"},{"type":"address","name":"_weth"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":""}],"name":"deploy_pool","inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"},{"type":"address[2]","name":"_coins"},{"type":"uint256","name":"A"},{"type":"uint256","name":"gamma"},{"type":"uint256","name":"mid_fee"},{"type":"uint256","name":"out_fee"},{"type":"uint256","name":"allowed_extra_profit"},{"type":"uint256","name":"fee_gamma"},{"type":"uint256","name":"adjustment_step"},{"type":"uint256","name":"admin_fee"},{"type":"uint256","name":"ma_half_time"},{"type":"uint256","name":"initial_price"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":""}],"name":"deploy_gauge","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"set_fee_receiver","inputs":[{"type":"address","name":"_fee_receiver"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"set_pool_implementation","inputs":[{"type":"address","name":"_pool_implementation"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"set_token_implementation","inputs":[{"type":"address","name":"_token_implementation"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"set_gauge_implementation","inputs":[{"type":"address","name":"_gauge_implementation"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"commit_transfer_ownership","inputs":[{"type":"address","name":"_addr"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"accept_transfer_ownership","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"find_pool_for_coins","inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"find_pool_for_coins","inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"i"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address[2]","name":""}],"name":"get_coins","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256[2]","name":""}],"name":"get_decimals","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256[2]","name":""}],"name":"get_balances","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":""},{"type":"uint256","name":""}],"name":"get_coin_indices","inputs":[{"type":"address","name":"_pool"},{"type":"address","name":"_from"},{"type":"address","name":"_to"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"get_gauge","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":""}],"name":"get_eth_index","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"get_token","inputs":[{"type":"address","name":"_pool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"admin","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"future_admin","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"fee_receiver","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"pool_implementation","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"token_implementation","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"gauge_implementation","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":""}],"name":"pool_count","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":""}],"name":"pool_list","inputs":[{"type":"uint256","name":"arg0"}]}]
Contract Creation Code
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00000000000000000000000000000000000000b296bab2ed122a85977423b602ddf3527582a3daDeployed 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