Contract Source Code (Vyper language format)

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# @version 0.2.12

"""
@title Unagii ZapEth 0.1.1
@author stakewith.us
@license AGPL-3.0-or-later
"""


from vyper.interfaces import ERC20


interface EthVaultV1:
    def token() -> address: view
    def withdraw(shares: uint256, _min: uint256): nonpayable
    # VaultV1 is ERC20
    def transferFrom(_from: address, _to: address, amount: uint256) -> bool: nonpayable


interface EthVaultV2:
    def token() -> address: view
    def uToken() -> address: view
    # BUG: amount fixed
    def deposit(amount: uint256, _min: uint256) -> uint256: payable


v1: public(EthVaultV1)
v2: public(EthVaultV2)
ETH: constant(address) = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE
uToken: public(ERC20)


@external
def __init__(v1: address, v2: address, uToken: address):
    self.v1 = EthVaultV1(v1)
    self.v2 = EthVaultV1(v2)

    assert self.v1.token() == ETH, "v1 token != ETH"
    assert self.v2.token() == ETH, "v2 token != ETH"

    assert uToken == self.v2.uToken(), "uToken != v2 uToken"
    self.uToken = ERC20(self.v2.uToken())


@external
def __default__():
    # only allow ETH from v1 vault
    assert msg.sender == self.v1.address, "!v1 vault"


@external
def zap(shares: uint256, _min: uint256, _minV2Shares: uint256):
    assert self.v1.transferFrom(msg.sender, self, shares), "transfer failed"
    self.v1.withdraw(shares, _min)

    uShares: uint256 = self.v2.deposit(self.balance, _minV2Shares, value=self.balance)
    self.uToken.transfer(msg.sender, uShares)

• No Contract Security Audit Submitted- Submit Audit Here

[{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"v1","type":"address"},{"name":"v2","type":"address"},{"name":"uToken","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"fallback"},{"stateMutability":"nonpayable","type":"function","name":"zap","inputs":[{"name":"shares","type":"uint256"},{"name":"_min","type":"uint256"},{"name":"_minV2Shares","type":"uint256"}],"outputs":[],"gas":57010},{"stateMutability":"view","type":"function","name":"v1","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2418},{"stateMutability":"view","type":"function","name":"v2","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2448},{"stateMutability":"view","type":"function","name":"uToken","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2478}]

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

00000000000000000000000077607588222e01bf892a29abab45796a2047fc7b0000000000000000000000008ef11c51a666c53aeeec504f120cd1435e451342000000000000000000000000de07f45688cb6cfaac398c1485860e186d55996d

-----Decoded View---------------
Arg [0] : v1 (address): 0x77607588222e01bf892a29Abab45796A2047fc7b
Arg [1] : v2 (address): 0x8eF11c51a666C53Aeeec504f120cd1435E451342
Arg [2] : uToken (address): 0xDe07f45688cb6CfAaC398c1485860e186D55996D

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000077607588222e01bf892a29abab45796a2047fc7b
Arg [1] : 0000000000000000000000008ef11c51a666c53aeeec504f120cd1435e451342
Arg [2] : 000000000000000000000000de07f45688cb6cfaac398c1485860e186d55996d