Contract
0xb7de33440b7171159a9718cbe748086cecdd9685
6
Contract Overview
Balance:
0 GLMR
GLMR Value:
$0.00
My Name Tag:
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Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.3.0
Contract Source Code (Vyper language format)
# @version ^0.3.0
# A "zap" to add liquidity and deposit into gauge in one transaction
# (c) Curve.Fi, 2022
MAX_COINS: constant(uint256) = 5
ETH_ADDRESS: constant(address) = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE
# External Contracts
interface ERC20:
def transfer(_receiver: address, _amount: uint256): nonpayable
def transferFrom(_sender: address, _receiver: address, _amount: uint256): nonpayable
def approve(_spender: address, _amount: uint256): nonpayable
def decimals() -> uint256: view
def balanceOf(_owner: address) -> uint256: view
def allowance(_owner : address, _spender : address) -> uint256: view
interface Pool2:
def add_liquidity(amounts: uint256[2], min_mint_amount: uint256): payable
interface Pool3:
def add_liquidity(amounts: uint256[3], min_mint_amount: uint256): payable
interface Pool4:
def add_liquidity(amounts: uint256[4], min_mint_amount: uint256): payable
interface Pool5:
def add_liquidity(amounts: uint256[5], min_mint_amount: uint256): payable
interface PoolUseUnderlying2:
def add_liquidity(amounts: uint256[2], min_mint_amount: uint256, use_underlying: bool): payable
interface PoolUseUnderlying3:
def add_liquidity(amounts: uint256[3], min_mint_amount: uint256, use_underlying: bool): payable
interface PoolUseUnderlying4:
def add_liquidity(amounts: uint256[4], min_mint_amount: uint256, use_underlying: bool): payable
interface PoolUseUnderlying5:
def add_liquidity(amounts: uint256[5], min_mint_amount: uint256, use_underlying: bool): payable
interface PoolFactory2:
def add_liquidity(pool: address, amounts: uint256[2], min_mint_amount: uint256): payable
interface PoolFactory3:
def add_liquidity(pool: address, amounts: uint256[3], min_mint_amount: uint256): payable
interface PoolFactory4:
def add_liquidity(pool: address, amounts: uint256[4], min_mint_amount: uint256): payable
interface PoolFactory5:
def add_liquidity(pool: address, amounts: uint256[5], min_mint_amount: uint256): payable
interface Gauge:
def deposit(lp_token_amount: uint256, addr: address): payable
allowance: public(HashMap[address, HashMap[address, bool]])
gauge_allowance: HashMap[address, bool]
@internal
def _add_liquidity(
deposit: address,
n_coins: uint256,
amounts: uint256[MAX_COINS],
min_mint_amount: uint256,
eth_value: uint256,
use_underlying: bool,
pool: address
):
if pool != ZERO_ADDRESS:
if n_coins == 2:
PoolFactory2(deposit).add_liquidity(pool, [amounts[0], amounts[1]], min_mint_amount, value=eth_value)
elif n_coins == 3:
PoolFactory3(deposit).add_liquidity(pool, [amounts[0], amounts[1], amounts[2]], min_mint_amount, value=eth_value)
elif n_coins == 4:
PoolFactory4(deposit).add_liquidity(pool, [amounts[0], amounts[1], amounts[2], amounts[3]], min_mint_amount, value=eth_value)
elif n_coins == 5:
PoolFactory5(deposit).add_liquidity(pool, [amounts[0], amounts[1], amounts[2], amounts[3], amounts[4]], min_mint_amount, value=eth_value)
elif use_underlying:
if n_coins == 2:
PoolUseUnderlying2(deposit).add_liquidity([amounts[0], amounts[1]], min_mint_amount, True, value=eth_value)
elif n_coins == 3:
PoolUseUnderlying3(deposit).add_liquidity([amounts[0], amounts[1], amounts[2]], min_mint_amount, True, value=eth_value)
elif n_coins == 4:
PoolUseUnderlying4(deposit).add_liquidity([amounts[0], amounts[1], amounts[2], amounts[3]], min_mint_amount, True, value=eth_value)
elif n_coins == 5:
PoolUseUnderlying5(deposit).add_liquidity([amounts[0], amounts[1], amounts[2], amounts[3], amounts[4]], min_mint_amount, True, value=eth_value)
else:
if n_coins == 2:
Pool2(deposit).add_liquidity([amounts[0], amounts[1]], min_mint_amount, value=eth_value)
elif n_coins == 3:
Pool3(deposit).add_liquidity([amounts[0], amounts[1], amounts[2]], min_mint_amount, value=eth_value)
elif n_coins == 4:
Pool4(deposit).add_liquidity([amounts[0], amounts[1], amounts[2], amounts[3]], min_mint_amount, value=eth_value)
elif n_coins == 5:
Pool5(deposit).add_liquidity([amounts[0], amounts[1], amounts[2], amounts[3], amounts[4]], min_mint_amount, value=eth_value)
@payable
@external
@nonreentrant('lock')
def deposit_and_stake(
deposit: address,
lp_token: address,
gauge: address,
n_coins: uint256,
coins: address[MAX_COINS],
amounts: uint256[MAX_COINS],
min_mint_amount: uint256,
use_underlying: bool, # for aave, saave, ib (use_underlying) and crveth, cvxeth (use_eth)
pool: address = ZERO_ADDRESS, # for factory
):
assert n_coins >= 2, 'n_coins must be >=2'
assert n_coins <= MAX_COINS, 'n_coins must be <=MAX_COINS'
# Ensure allowance for swap or zap
for i in range(MAX_COINS):
if i >= n_coins:
break
if coins[i] == ETH_ADDRESS or amounts[i] == 0 or self.allowance[deposit][coins[i]]:
continue
self.allowance[deposit][coins[i]] = True
ERC20(coins[i]).approve(deposit, MAX_UINT256)
# Ensure allowance for gauge
if not self.gauge_allowance[gauge]:
self.gauge_allowance[gauge] = True
ERC20(lp_token).approve(gauge, MAX_UINT256)
# Transfer coins from owner
has_eth: bool = False
for i in range(MAX_COINS):
if i >= n_coins:
break
if coins[i] == ETH_ADDRESS:
assert msg.value == amounts[i]
has_eth = True
continue
if amounts[i] > 0:
# "safeTransferFrom" which works for ERC20s which return bool or not
_response: Bytes[32] = raw_call(
coins[i],
concat(
method_id("transferFrom(address,address,uint256)"),
convert(msg.sender, bytes32),
convert(self, bytes32),
convert(amounts[i], bytes32),
),
max_outsize=32,
) # dev: failed transfer
if len(_response) > 0:
assert convert(_response, bool) # dev: failed transfer
if not has_eth:
assert msg.value == 0
# Reverts if n_coins is wrong
self._add_liquidity(deposit, n_coins, amounts, min_mint_amount, msg.value, use_underlying, pool)
lp_token_amount: uint256 = ERC20(lp_token).balanceOf(self)
assert lp_token_amount > 0 # dev: swap-token mismatch
Gauge(gauge).deposit(lp_token_amount, msg.sender)
@payable
@external
def __default__():
pass[{"stateMutability":"payable","type":"function","name":"deposit_and_stake","inputs":[{"name":"deposit","type":"address"},{"name":"lp_token","type":"address"},{"name":"gauge","type":"address"},{"name":"n_coins","type":"uint256"},{"name":"coins","type":"address[5]"},{"name":"amounts","type":"uint256[5]"},{"name":"min_mint_amount","type":"uint256"},{"name":"use_underlying","type":"bool"}],"outputs":[],"gas":416901},{"stateMutability":"payable","type":"function","name":"deposit_and_stake","inputs":[{"name":"deposit","type":"address"},{"name":"lp_token","type":"address"},{"name":"gauge","type":"address"},{"name":"n_coins","type":"uint256"},{"name":"coins","type":"address[5]"},{"name":"amounts","type":"uint256[5]"},{"name":"min_mint_amount","type":"uint256"},{"name":"use_underlying","type":"bool"},{"name":"pool","type":"address"}],"outputs":[],"gas":416901},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"view","type":"function","name":"allowance","inputs":[{"name":"arg0","type":"address"},{"name":"arg1","type":"address"}],"outputs":[{"name":"","type":"bool"}],"gas":3190}]Contract Creation Code
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