Core Smart Contracts

ShibaSwap v2’s core smart contracts provide the foundation for decentralized trading, liquidity provision, and pool management. This reference covers all core contracts, interfaces, and libraries.

ShibaSwapV2Factory

The factory contract deploys and manages all ShibaSwap v2 pools. It’s responsible for creating new pools and maintaining the registry of all deployed pools.

factory

address

required

The main factory contract address that deploys all ShibaSwap v2 pools.

Functions

createPool

function createPool(
    address tokenA,
    address tokenB,
    uint24 fee
) external returns (address pool)

Creates a new pool for the specified token pair and fee tier.

tokenA

address

required

First token in the pool pair

tokenB

address

required

Second token in the pool pair

fee

uint24

required

Fee tier for the pool (500, 3000, 10000 for 0.05%, 0.3%, 1%)

pool

address

required

Address of the newly created pool contract

Pool creation will revert if the pool already exists, fee is invalid, or token addresses are invalid.

setOwner

function setOwner(address _owner) external

Updates the factory owner. Only callable by the current owner.

_owner

address

required

New owner address for the factory

enableFeeAmount

function enableFeeAmount(uint24 fee, int24 tickSpacing) public

Enables a new fee tier with specified tick spacing.

fee

uint24

required

Fee amount in hundredths of a bip (1e-6)

tickSpacing

int24

required

Spacing between ticks for pools with this fee tier

Once enabled, fee amounts cannot be removed from the factory.

ShibaSwapV2Pool

The core pool contract that handles all trading logic, liquidity provision, and price calculations.

Key Functions

initialize

function initialize(uint160 sqrtPriceX96) external

Sets the initial price for the pool. Must be called before any trading can occur.

sqrtPriceX96

uint160

required

Initial square root price as Q64.96 fixed point number

mint

function mint(
    address recipient,
    int24 tickLower,
    int24 tickUpper,
    uint128 amount,
    bytes data
) external returns (uint256 amount0, uint256 amount1)

Adds liquidity to a specific price range.

recipient

address

required

Address that will receive the liquidity position

tickLower

int24

required

Lower tick boundary of the position

tickUpper

int24

required

Upper tick boundary of the position

amount

uint128

required

Amount of liquidity to mint

data

bytes

required

Additional data passed to the callback

amount0

uint256

required

Amount of token0 required for the liquidity

amount1

uint256

required

Amount of token1 required for the liquidity

swap

function swap(
    address recipient,
    bool zeroForOne,
    int256 amountSpecified,
    uint160 sqrtPriceLimitX96,
    bytes data
) external returns (int256 amount0, int256 amount1)

Executes a swap between the pool’s tokens.

recipient

address

required

Address to receive the swapped tokens

zeroForOne

bool

required

True for token0→token1, false for token1→token0

amountSpecified

int256

required

Amount to swap (positive for exact input, negative for exact output)

sqrtPriceLimitX96

uint160

required

Price limit to prevent excessive slippage

data

bytes

required

Data passed to the swap callback

amount0

int256

required

Delta of token0 balance (negative = exact, positive = minimum)

amount1

int256

required

Delta of token1 balance (negative = exact, positive = minimum)

collect

function collect(
    address recipient,
    int24 tickLower,
    int24 tickUpper,
    uint128 amount0Requested,
    uint128 amount1Requested
) external returns (uint128 amount0, uint128 amount1)

Collects accumulated fees from a liquidity position.

recipient

address

required

Address to receive the collected fees

tickLower

int24

required

Lower tick of the position

tickUpper

int24

required

Upper tick of the position

amount0Requested

uint128

required

Maximum amount of token0 to collect

amount1Requested

uint128

required

Maximum amount of token1 to collect

amount0

uint128

required

Amount of token0 fees collected

amount1

uint128

required

Amount of token1 fees collected

burn

function burn(
    int24 tickLower,
    int24 tickUpper,
    uint128 amount
) external returns (uint256 amount0, uint256 amount1)

Burns liquidity and returns underlying tokens to the caller.

tickLower

int24

required

Lower tick of the position

tickUpper

int24

required

Upper tick of the position

amount

uint128

required

Amount of liquidity to burn

amount0

uint256

required

Amount of token0 returned

amount1

uint256

required

Amount of token1 returned

flash

function flash(
    address recipient,
    uint256 amount0,
    uint256 amount1,
    bytes data
) external

Executes a flash loan of pool tokens.

recipient

address

required

Address to receive the flash loan

amount0

uint256

required

Amount of token0 to flash loan

amount1

uint256

required

Amount of token1 to flash loan

data

bytes

required

Data passed to the flash callback

Flash loans must be repaid with fees in the same transaction.

ShibaSwapV2PoolDeployer

Handles the deployment of new pool contracts.

Functions

deploy

function deploy(
    address factory,
    address token0,
    address token1,
    uint24 fee,
    int24 tickSpacing
) external returns (address pool)

Deploys a new pool contract.

factory

address

required

Factory contract address

token0

address

required

First token in the pool

token1

address

required

Second token in the pool

fee

uint24

required

Fee tier for the pool

tickSpacing

int24

required

Tick spacing for the pool

pool

address

required

Address of the deployed pool contract

Interfaces

IShibaSwapV2Factory

interface IShibaSwapV2Factory {
    event PoolCreated(
        address indexed token0,
        address indexed token1,
        uint24 indexed fee,
        int24 tickSpacing,
        address pool
    );
    
    function createPool(
        address tokenA,
        address tokenB,
        uint24 fee
    ) external returns (address pool);
    
    function setOwner(address _owner) external;
    
    function enableFeeAmount(uint24 fee, int24 tickSpacing) external;
    
    function getPool(
        address tokenA,
        address tokenB,
        uint24 fee
    ) external view returns (address pool);
    
    function owner() external view returns (address);
    
    function feeAmountTickSpacing(uint24 fee) external view returns (int24);
}

IShibaSwapV2Pool

interface IShibaSwapV2Pool {
    event Initialize(uint160 sqrtPriceX96, int24 tick);
    event Mint(
        address sender,
        address indexed owner,
        int24 indexed tickLower,
        int24 indexed tickUpper,
        uint128 amount,
        uint256 amount0,
        uint256 amount1
    );
    event Collect(
        address indexed owner,
        address recipient,
        int24 indexed tickLower,
        int24 indexed tickUpper,
        uint128 amount0,
        uint128 amount1
    );
    event Burn(
        address indexed owner,
        int24 indexed tickLower,
        int24 indexed tickUpper,
        uint128 amount,
        uint256 amount0,
        uint256 amount1
    );
    event Swap(
        address indexed sender,
        address indexed recipient,
        int256 amount0,
        int256 amount1,
        uint160 sqrtPriceX96,
        uint128 liquidity,
        int24 tick
    );
    event Flash(
        address indexed sender,
        address indexed recipient,
        uint256 amount0,
        uint256 amount1,
        uint256 paid0,
        uint256 paid1
    );
    
    function initialize(uint160 sqrtPriceX96) external;
    
    function mint(
        address recipient,
        int24 tickLower,
        int24 tickUpper,
        uint128 amount,
        bytes calldata data
    ) external returns (uint256 amount0, uint256 amount1);
    
    function collect(
        address recipient,
        int24 tickLower,
        int24 tickUpper,
        uint128 amount0Requested,
        uint128 amount1Requested
    ) external returns (uint128 amount0, uint128 amount1);
    
    function burn(
        int24 tickLower,
        int24 tickUpper,
        uint128 amount
    ) external returns (uint256 amount0, uint256 amount1);
    
    function swap(
        address recipient,
        bool zeroForOne,
        int256 amountSpecified,
        uint160 sqrtPriceLimitX96,
        bytes calldata data
    ) external returns (int256 amount0, int256 amount1);
    
    function flash(
        address recipient,
        uint256 amount0,
        uint256 amount1,
        bytes calldata data
    ) external;
    
    function slot0() external view returns (
        uint160 sqrtPriceX96,
        int24 tick,
        uint16 observationIndex,
        uint16 observationCardinality,
        uint16 observationCardinalityNext,
        uint8 feeProtocol,
        bool unlocked
    );
    
    function liquidity() external view returns (uint128);
    
    function ticks(int24) external view returns (
        uint128 liquidityGross,
        int128 liquidityNet,
        uint256 feeGrowthOutside0X128,
        uint256 feeGrowthOutside1X128,
        int56 tickCumulativeOutside,
        uint160 secondsPerLiquidityOutsideX128,
        uint32 secondsOutside,
        bool initialized
    );
}

IShibaSwapV2PoolDeployer

interface IShibaSwapV2PoolDeployer {
    function deploy(
        address factory,
        address token0,
        address token1,
        uint24 fee,
        int24 tickSpacing
    ) external returns (address pool);
}

Libraries

TickMath

Provides mathematical functions for working with ticks and prices.

library TickMath {
    /// @dev The minimum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**-128
    int24 internal constant MIN_TICK = -887272;
    /// @dev The maximum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**128
    int24 internal constant MAX_TICK = -MIN_TICK;
    
    /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK)
    uint160 internal constant MIN_SQRT_RATIO = 4295128739;
    /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK)
    uint160 internal constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342;
    
    /// @dev Returns the sqrt ratio as a Q64.96 for the given tick. The sqrt ratio is computed as sqrt(1.0001)^tick
    /// @param tick the tick for which to compute the sqrt ratio
    function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96);
    
    /// @dev Returns the tick corresponding to a given sqrt ratio, reverting if input is not between MIN_SQRT_RATIO and MAX_SQRT_RATIO
    /// @param sqrtPriceX96 the sqrt ratio for which to compute the tick as a Q64.96
    function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick);
}

FullMath

Provides mathematical functions for working with fixed-point numbers.

library FullMath {
    /// @dev Returns the full product of two unsigned 256-bit numbers
    function mulDiv(
        uint256 a,
        uint256 b,
        uint256 denominator
    ) internal pure returns (uint256 result);
    
    /// @dev Returns the full product of two unsigned 256-bit numbers, and the intermediate value
    function mulDivRoundingUp(
        uint256 a,
        uint256 b,
        uint256 denominator
    ) internal pure returns (uint256 result);
}

LiquidityMath

Provides functions for liquidity calculations.

library LiquidityMath {
    /// @dev Add a signed liquidity delta to liquidity and revert if it overflows or underflows
    function addDelta(uint128 x, int128 y) internal pure returns (uint128 z);
}

SqrtPriceMath

Provides functions for square root price calculations.

library SqrtPriceMath {
    /// @dev Returns the next sqrt price given an input amount of token0 or token1
    function getNextSqrtPriceFromInput(
        uint160 sqrtPriceX96,
        uint128 liquidity,
        uint256 amountIn,
        bool zeroForOne
    ) internal pure returns (uint160 sqrtPriceNextX96);
    
    /// @dev Returns the next sqrt price given an output amount of token0 or token1
    function getNextSqrtPriceFromOutput(
        uint160 sqrtPriceX96,
        uint128 liquidity,
        uint256 amountOut,
        bool zeroForOne
    ) internal pure returns (uint160 sqrtPriceNextX96);
    
    /// @dev Returns the amount0 delta between two prices
    function getAmount0Delta(
        uint160 sqrtPriceAX96,
        uint160 sqrtPriceBX96,
        uint128 liquidity,
        bool roundUp
    ) internal pure returns (uint256 amount0);
    
    /// @dev Returns the amount1 delta between two prices
    function getAmount1Delta(
        uint160 sqrtPriceAX96,
        uint160 sqrtPriceBX96,
        uint128 liquidity,
        bool roundUp
    ) internal pure returns (uint256 amount1);
}

Usage Examples

Creating a Pool

// Deploy a new pool
IShibaSwapV2Factory factory = IShibaSwapV2Factory(FACTORY_ADDRESS);
address pool = factory.createPool(SHIB_ADDRESS, WETH_ADDRESS, 3000);

// Initialize the pool with a price
IShibaSwapV2Pool(pool).initialize(encodeSqrtRatioX96(1, 1)); // 1:1 price

Adding Liquidity

// Mint liquidity in a specific range
IShibaSwapV2Pool pool = IShibaSwapV2Pool(POOL_ADDRESS);
(uint256 amount0, uint256 amount1) = pool.mint(
    recipient,
    tickLower,
    tickUpper,
    liquidity,
    data
);

Executing a Swap

// Swap token0 for token1
IShibaSwapV2Pool pool = IShibaSwapV2Pool(POOL_ADDRESS);
(int256 amount0, int256 amount1) = pool.swap(
    recipient,
    true, // zeroForOne
    amountSpecified,
    sqrtPriceLimitX96,
    data
);

Error Codes

Pool Errors

Factory Errors

Math Errors

Best Practices

Always check pool existence

Verify a pool exists before attempting operations.

Use factory.getPool(tokenA, tokenB, fee) to check pool existence.

Handle slippage properly

Set appropriate price limits for swaps.

Without proper slippage protection, trades may execute at unfavorable prices.

Validate tick ranges

Ensure tick ranges are within valid bounds.

Ticks must be between MIN_TICK (-887272) and MAX_TICK (887272).

Use safe math operations

Leverage the provided libraries for mathematical operations.

The libraries handle overflow/underflow protection automatically.

Introduction

Shibaswap-v1

Shibaswap-v2

ShibaSwapV2Factory

Functions

createPool

setOwner

enableFeeAmount

ShibaSwapV2Pool

Key Functions

initialize

mint

swap

collect

burn

flash

ShibaSwapV2PoolDeployer

Functions

deploy

Interfaces

IShibaSwapV2Factory

IShibaSwapV2Pool

IShibaSwapV2PoolDeployer

Libraries

TickMath

FullMath

LiquidityMath

SqrtPriceMath

Usage Examples

Creating a Pool

Adding Liquidity

Executing a Swap

Error Codes

Best Practices

Introduction

Shibaswap-v1

Shibaswap-v2

​ShibaSwapV2Factory

​Functions

createPool

setOwner

enableFeeAmount

​ShibaSwapV2Pool

​Key Functions

initialize

mint

swap

collect

burn

flash

​ShibaSwapV2PoolDeployer

​Functions

deploy

​Interfaces

​IShibaSwapV2Factory

​IShibaSwapV2Pool

​IShibaSwapV2PoolDeployer

​Libraries

​TickMath

​FullMath

​LiquidityMath

​SqrtPriceMath

​Usage Examples

​Creating a Pool

​Adding Liquidity

​Executing a Swap

​Error Codes

​Best Practices

ShibaSwapV2Factory

Functions

ShibaSwapV2Pool

Key Functions

ShibaSwapV2PoolDeployer

Functions

Interfaces

IShibaSwapV2Factory

IShibaSwapV2Pool

IShibaSwapV2PoolDeployer

Libraries

TickMath

FullMath

LiquidityMath

SqrtPriceMath

Usage Examples

Creating a Pool

Adding Liquidity

Executing a Swap

Error Codes

Best Practices