NostraSwapPair

Code

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Address

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Events

Mint

event Mint(address indexed sender, uint amount0, uint amount1);

Emitted each time liquidity tokens are created via mint.

Burn

event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);

Emitted each time liquidity tokens are destroyed via burn.

Swap

event Swap(address indexed sender,  uint amount0In,  uint amount1In,  uint amount0Out,  uint amount1Out,  address indexed to, uint preArbK, uint postArbK);

Emitted each time a swap occurs via swap.

Sync

event Sync(uint112 reserve0, uint112 reserve1);

Emitted each time reserves are updated via mint, burn, swap, or sync.

Read-Only Functions

MINIMUM_LIQUIDITY

function MINIMUM_LIQUIDITY() external pure returns (uint);

Returns 1000 for all pairs. See Minimum Liquidity.

factory

function factory() external view returns (address);

Returns the factory address.

token0

function token0() external view returns (address);

Returns the address of the pair token with the lower sort order.

token1

function token1() external view returns (address);

Returns the address of the pair token with the higher sort order.

getReserves

function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

Returns the reserves of token0 and token1 used to price trades and distribute liquidity. See Pricing. Also returns the block.timestamp (mod 2**32) of the last block during which an interaction occured for the pair.

externalPool0

function externalPool0() external view returns (uint);

Returns address of the corresponding pair in a third-party DEX. See Arbitrage.

externalPool1

function externalPool1() external view returns (uint);

Returns address of the corresponding pair in a third-party DEX. See Arbitrage.

kLast

function kLast() external view returns (uint);

Returns the product of the reserves as of the most recent liquidity event.

limitRate

function limitRate() external view returns(uint224);

Returns the limitRate per second used to calculate oracle prices.

lpips

function lpips() external view returns(uint224[2][7] memory);

Returns the limitPriceImpactPerSecond array calculated from limitRate

State-Changing Functions

mint

function mint(address to) external returns (uint liquidity);

Creates pool tokens.

• Emits Mint, Sync, Transfer.

burn

function burn(address to) external returns (uint amount0, uint amount1);

Destroys pool tokens.

• Emits Burn, Sync, Transfer.

swap

function swap(uint amount0Out, uint amount1Out, address to, bool refund0) external;

Swaps tokens. Refunds profit to to

• Emits Swap, Sync.

skim

function skim(address to) external;

Transfer leftover balances to msg.sender

sync

function sync() external;

Syncs reserves with balances

• Emits Sync.

setLimitPriceImpact

function setLimitPriceImpact(uint224) external;

Set limitRate and recalculate lpips array. Only timelock contract may call this.

Interface

pragma solidity >=0.5.0;

interface INostraSwapPair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function getOraclePrice1() external view returns (uint224 oraclePrice, uint32 latestBlockTimestamp);
    function getOraclePrice0() external view returns (uint224 oraclePrice, uint32 latestBlockTimestamp);
    function kLast() external view returns (uint);

    function limitRate() external view returns(uint224);
    function lpips() external view returns(uint224[2][7] memory);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bool refund0) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
    function setLimitPriceImpact(uint224) external;
}

ABI

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