├── .gitignore
├── .vscode
    └── settings.json
├── Cargo.lock
├── Cargo.toml
├── README.md
├── examples
    ├── get_lp_balance.rs
    ├── get_pool_price.rs
    └── optimal_swap_for_price.rs
└── src
    ├── alloy_pool
        ├── factory.rs
        ├── mod.rs
        └── pool.rs
    ├── constants.rs
    ├── error.rs
    ├── lib.rs
    ├── macros.rs
    ├── macros
        ├── token_amount.rs
        └── wrappers.rs
    ├── math.rs
    ├── math
        ├── liquidity.rs
        ├── swap.rs
        ├── tick.rs
        └── wrappers.rs
    ├── pool.rs
    ├── pool
        ├── price.rs
        └── swap.rs
    ├── position.rs
    ├── traits
        ├── basis_points.rs
        ├── batch.rs
        ├── float.rs
        └── mod.rs
    └── types
        ├── amount.rs
        ├── deltas.rs
        ├── mod.rs
        └── price.rs


/.gitignore:
--------------------------------------------------------------------------------
1 | /target
2 | setup_env.sh


--------------------------------------------------------------------------------
/.vscode/settings.json:
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1 | {
2 |   "rust-analyzer.cargo.features": []
3 | }
4 | 


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/Cargo.lock:
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--------------------------------------------------------------------------------
/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "v3-rs"
 3 | version = "0.1.0"
 4 | edition = "2021"
 5 | repository = "https://github.com/nhtyy/v3-rs"
 6 | description = "A Rust library for interacting with Uniswap V3 pools."
 7 | 
 8 | # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 9 | 
10 | [dependencies]
11 | rug = "1.10.0"
12 | tokio = { version = "1.16.1", features = ["full"] }
13 | futures = "0.3.17"
14 | lazy_static = "1.4.0"
15 | async-trait = "0.1.74"
16 | tracing = "0.1.40"
17 | serde = {version = "1.0.193", features = ["derive"]}
18 | anyhow = "1.0.75"
19 | thiserror = "1.0.61"
20 | alloy = { version = "0.4.0", features = ["full"] }
21 | phf = { version = "0.11.2", features = ["macros"] }
22 | 
23 | [[example]]
24 | name = "get_lp_balance"
25 | path = "examples/get_lp_balance.rs"
26 | 
27 | [[example]]
28 | name = "get_pool_price"
29 | path = "examples/get_pool_price.rs"
30 | 
31 | [[example]]
32 | name = "optimal_swap_for_price"
33 | path = "examples/optimal_swap_for_price.rs"
34 | 
35 | [features]
36 | default = []
37 | aerodrome = []
38 | trace_callMany = ["alloy/rpc-types-trace"]
39 | eth_callMany = []
40 | 
41 | [dev-dependencies]
42 | tracing-subscriber = "0.3.18"
43 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # v3-rs
 2 | 
 3 | ### Motivation
 4 | 
 5 | v3-rs is a Rust library for interacting with Uniswap v3 Pools.
 6 | 
 7 | v3-rs currently has high level functionality for:
 8 | - computing the optimal swap amount for a given price/pool 
 9 | - computing the LP balances owned by a given address (NFT positions only)
10 | and implements many low level helpers to make additional functionality easy
11 | 
12 | We also expose some useful [crate::types] that can help you seemlessly interact with on chain pools without having to think about token decimals or anything like that.
13 | 
14 | Please see the examples in the repo for more information.
15 | 
16 | #### Creating Pool prices from human readable prices
17 | To create a pool price, (account for the decimals) you can use [PoolPrice::from_human_readable], which implements `Into<Price>`
18 |  
19 | #### Pool Price Example
20 | ```rust
21 |     use v3_rs::{AlloyFactory, FeeTier, constants::MAINNET, V3Pool};
22 |     use alloy::providers::ProviderBuilder;
23 |     use alloy::primitives::{address, Address};
24 | 
25 |     const WETH: Address = address!("c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2");
26 |     const DAI: Address = address!("6b175474e89094c44da98b954eedeac495271d0f");
27 | 
28 |     #[tokio::main]
29 |     async fn main() {
30 |         let provider = ProviderBuilder::new().with_recommended_fillers().on_http("https://cloudflare-eth.com".parse().unwrap());
31 | 
32 |         let factory = AlloyFactory::new(MAINNET.factory, &provider);
33 | 
34 |         let pool = factory.pool(WETH, DAI, FeeTier::Mid).await.unwrap();
35 | 
36 |         let numeraire_idx = pool.position_of(&DAI).expect("Token should be in the pool");
37 | 
38 |         let price = pool.pool_price(numeraire_idx).await.unwrap();
39 | 
40 |         println!("Pool Price: {}", price);
41 |     }
42 | ```
43 | 
44 | # Note:
45 | v3-rs doesnt actually help you *interact* with pools on chain, only extract useful information from them.
46 | 
47 | ### Usage
48 | 
49 | see `cargo doc --open` and the examples in the repo.
50 | 
51 | ### Plans
52 | - add quoting and path building


--------------------------------------------------------------------------------
/examples/get_lp_balance.rs:
--------------------------------------------------------------------------------
 1 | use alloy::primitives::{address, Address};
 2 | use alloy::providers::ProviderBuilder;
 3 | use v3_rs::{constants::MAINNET, Factory, FeeTier};
 4 | 
 5 | const TOKEN_A: Address = address!();
 6 | const TOKEN_B: Address = address!();
 7 | const LP: Address = address!();
 8 | 
 9 | #[tokio::main]
10 | async fn main() {
11 |     let provider = ProviderBuilder::new()
12 |         .with_recommended_fillers()
13 |         .on_http("https://cloudflare-eth.com".parse().unwrap());
14 | 
15 |     let factory = Factory::new(MAINNET.factory, &provider);
16 | 
17 |     let pool = factory.pool(TOKEN_A, TOKEN_B, FeeTier::Mid).await.unwrap();
18 | 
19 |     let balance = pool.lp_balance(LP).await.unwrap();
20 | 
21 |     println!("LP Balance: {:?}", balance);
22 | }
23 | 


--------------------------------------------------------------------------------
/examples/get_pool_price.rs:
--------------------------------------------------------------------------------
 1 | use alloy::primitives::{address, Address};
 2 | use alloy::providers::ProviderBuilder;
 3 | use v3_rs::{constants::MAINNET, Factory, FeeTier, V3Pool};
 4 | 
 5 | const WETH: Address = address!("c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2");
 6 | const DAI: Address = address!("6b175474e89094c44da98b954eedeac495271d0f");
 7 | 
 8 | #[tokio::main]
 9 | async fn main() {
10 |     let provider = ProviderBuilder::new()
11 |         .with_recommended_fillers()
12 |         .on_http("https://cloudflare-eth.com".parse().unwrap());
13 | 
14 |     let factory = Factory::new(MAINNET.factory, &provider);
15 | 
16 |     let pool = factory.pool(WETH, DAI, FeeTier::Mid).await.unwrap();
17 | 
18 |     let numeraire_idx = pool.position_of(&DAI).expect("Token should be in the pool");
19 | 
20 |     let price = pool.pool_price(numeraire_idx).await.unwrap();
21 | 
22 |     println!("Pool Price: {}", price);
23 | }
24 | 


--------------------------------------------------------------------------------
/examples/optimal_swap_for_price.rs:
--------------------------------------------------------------------------------
 1 | use alloy::primitives::{address, Address};
 2 | use alloy::providers::ProviderBuilder;
 3 | use v3_rs::{constants::MAINNET, math::Price, Factory, FeeTier, PriceExt, V3Pool};
 4 | 
 5 | const WETH: Address = address!("c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2");
 6 | const DAI: Address = address!("6b175474e89094c44da98b954eedeac495271d0f");
 7 | 
 8 | #[tokio::main]
 9 | async fn main() {
10 |     let provider = ProviderBuilder::new()
11 |         .with_recommended_fillers()
12 |         .on_http("https://cloudflare-eth.com".parse().unwrap());
13 | 
14 |     let factory = Factory::new(MAINNET.factory, &provider);
15 | 
16 |     let pool = factory.pool(WETH, DAI, FeeTier::Mid).await.unwrap();
17 | 
18 |     let numeraire_idx = pool.position_of(&DAI).expect("Token should be in the pool");
19 | 
20 |     let price = pool.pool_price(numeraire_idx).await.unwrap();
21 | 
22 |     println!("Pool Price: {}", price);
23 | 
24 |     // lets scale down the price 5%
25 |     let new_price = rug::Float::from(price) * 0.95;
26 | 
27 |     // lets find the optimal swap for this price
28 |     let optimal = pool
29 |         .optimal_swap_for_price(Price::new(new_price).unwrap())
30 |         .await
31 |         .unwrap();
32 | 
33 |     println!("Optimal Swap: {:?}", optimal);
34 |     println!("fee needed: {}", optimal.fee_amount())
35 | }
36 | 


--------------------------------------------------------------------------------
/src/alloy_pool/factory.rs:
--------------------------------------------------------------------------------
  1 | use super::pool::Pool;
  2 | use super::pool::V3PoolContract::V3PoolContractInstance;
  3 | use crate::{error::V3PoolError, FeeTier};
  4 | use alloy::network::Network;
  5 | use alloy::primitives::Address;
  6 | use alloy::providers::Provider;
  7 | use alloy::transports::Transport;
  8 | use FactoryInterface::FactoryInterfaceInstance;
  9 | 
 10 | alloy::sol! {
 11 |     #[derive(Debug)]
 12 |     #[sol(rpc)]
 13 |     interface FactoryInterface {
 14 |         /// @notice Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist
 15 |         /// @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order
 16 |         /// @param tokenA The contract address of either token0 or token1
 17 |         /// @param tokenB The contract address of the other token
 18 |         /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
 19 |         /// @return pool The pool address
 20 |         function getPool(
 21 |             address tokenA,
 22 |             address tokenB,
 23 |             uint24 fee
 24 |         ) external view returns (address pool);
 25 |     }
 26 | 
 27 |     #[sol(rpc)]
 28 |     #[cfg(feature = "aerodrome")]
 29 |     interface AerodromeInterface {
 30 |         /// @notice Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist
 31 |         /// @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order
 32 |         /// @param tokenA The contract address of either token0 or token1
 33 |         /// @param tokenB The contract address of the other token
 34 |         /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
 35 |         /// @return pool The pool address
 36 |         function getPool(
 37 |             address tokenA,
 38 |             address tokenB,
 39 |             int24 tickSpacing
 40 |         ) external view returns (address pool);
 41 |     }
 42 | }
 43 | 
 44 | /// The alloy implementation of an on chain v3 factory.
 45 | ///
 46 | /// This is useful for getting pool instances from the underlying tokens
 47 | pub struct Factory<T, P, N> {
 48 |     instance: FactoryInterfaceInstance<T, P, N>,
 49 | }
 50 | 
 51 | impl<T, P, N> Factory<T, P, N>
 52 | where
 53 |     T: Transport + Clone,
 54 |     P: Provider<T, N>,
 55 |     N: Network,
 56 | {
 57 |     pub const fn new(address: Address, provider: P) -> Self {
 58 |         Self {
 59 |             instance: FactoryInterfaceInstance::new(address, provider),
 60 |         }
 61 |     }
 62 | 
 63 |     pub async fn pool_address(
 64 |         &self,
 65 |         first_token: Address,
 66 |         second_token: Address,
 67 |         fee: FeeTier,
 68 |     ) -> Result<Address, alloy::contract::Error> {
 69 |         self.instance
 70 |             .getPool(first_token, second_token, fee.as_scaled_bp())
 71 |             .call()
 72 |             .await
 73 |             .map(|x| x.pool)
 74 |     }
 75 | 
 76 |     /// todo! maybe we spawn a thread here and send the Pool over a channel or use an arc to share
 77 |     /// the pool between threads.
 78 |     ///
 79 |     /// should be ran inside its own thread as it blocks whatever thread it was instantiated on
 80 |     pub async fn pool(
 81 |         &self,
 82 |         first_token: Address,
 83 |         second_token: Address,
 84 |         fee: FeeTier,
 85 |     ) -> Result<Pool<T, &P, N>, V3PoolError<alloy::contract::Error>> {
 86 |         self.pool_with_provider(first_token, second_token, fee, self.instance.provider())
 87 |             .await
 88 |     }
 89 | 
 90 |     pub async fn pool_with_provider<P2>(
 91 |         &self,
 92 |         first_token: Address,
 93 |         second_token: Address,
 94 |         fee: FeeTier,
 95 |         provider: P2,
 96 |     ) -> Result<Pool<T, P2, N>, V3PoolError<alloy::contract::Error>>
 97 |     where
 98 |         P2: Provider<T, N>,
 99 |     {
100 |         let address = self
101 |             .pool_address(first_token, second_token, fee)
102 |             .await
103 |             .map_err(V3PoolError::backend_error)?;
104 | 
105 |         if address == Address::ZERO {
106 |             return Err(V3PoolError::PoolNotFound);
107 |         }
108 | 
109 |         let bindings = V3PoolContractInstance::new(address, provider);
110 | 
111 |         Pool::new(bindings)
112 |             .await
113 |             .map_err(V3PoolError::backend_error)
114 |     }
115 | }
116 | 
117 | #[cfg(feature = "aerodrome")]
118 | pub use aerodrome::{AerodromeFactory, AERODROME_FACTORY_ADDRESS};
119 | 
120 | #[cfg(feature = "aerodrome")]
121 | mod aerodrome {
122 | 
123 |     use super::AerodromeInterface::AerodromeInterfaceInstance as IAerodromeFactory;
124 |     use super::*;
125 |     use alloy::contract::Error as ContractError;
126 |     use alloy::primitives::Signed;
127 | 
128 |     pub const AERODROME_FACTORY_ADDRESS: Address =
129 |         alloy::primitives::address!("5e7BB104d84c7CB9B682AaC2F3d509f5F406809A");
130 | 
131 |     pub struct AerodromeFactory<T, P, N> {
132 |         inner: IAerodromeFactory<T, P, N>,
133 |     }
134 | 
135 |     impl<T, P, N> AerodromeFactory<T, P, N>
136 |     where
137 |         P: Provider<T, N>,
138 |         T: Transport + Clone,
139 |         N: Network,
140 |     {
141 |         pub const fn new(provider: P) -> Self {
142 |             Self {
143 |                 inner: IAerodromeFactory::new(AERODROME_FACTORY_ADDRESS, provider),
144 |             }
145 |         }
146 | 
147 |         pub async fn get_pool_address(
148 |             &self,
149 |             token_a: Address,
150 |             token_b: Address,
151 |             tick_spacing: Signed<24, 1>,
152 |         ) -> Result<Address, ContractError> {
153 |             let addr = self
154 |                 .inner
155 |                 .getPool(token_a, token_b, tick_spacing)
156 |                 .call()
157 |                 .await
158 |                 .map(|addr| addr.pool)?;
159 | 
160 |             Ok(addr)
161 |         }
162 | 
163 |         pub async fn get_pool(
164 |             &self,
165 |             token_a: Address,
166 |             token_b: Address,
167 |             tick_spacing: Signed<24, 1>,
168 |         ) -> anyhow::Result<crate::AerodromePool<T, &P, N>> {
169 |             self.get_pool_with_provider(self.inner.provider(), token_a, token_b, tick_spacing)
170 |                 .await
171 |         }
172 | 
173 |         pub async fn get_pool_with_provider<P2>(
174 |             &self,
175 |             provider: P2,
176 |             token_a: Address,
177 |             token_b: Address,
178 |             tick_spacing: Signed<24, 1>,
179 |         ) -> anyhow::Result<crate::AerodromePool<T, P2, N>>
180 |         where
181 |             P2: Provider<T, N>,
182 |         {
183 |             let addr = self
184 |                 .get_pool_address(token_a, token_b, tick_spacing)
185 |                 .await?;
186 | 
187 |             let instance = crate::alloy_pool::pool::V3PoolContract::V3PoolContractInstance::new(
188 |                 addr, provider,
189 |             );
190 | 
191 |             Ok(crate::AerodromePool::new(instance).await?)
192 |         }
193 |     }
194 | }
195 | 
196 | #[cfg(test)]
197 | mod test {
198 |     #[cfg(feature = "aerodrome")]
199 |     #[tokio::test]
200 |     async fn test_get_pool() {
201 |         use crate::V3Pool;
202 |         use alloy::primitives::{address, Address};
203 |         use alloy::providers::ProviderBuilder;
204 | 
205 |         const WETH: Address = address!("4200000000000000000000000000000000000006");
206 |         const U_SUI: Address = address!("b0505e5a99abd03d94a1169e638B78EDfEd26ea4");
207 | 
208 |         let provider = ProviderBuilder::new()
209 |             .with_recommended_fillers()
210 |             .on_http("https://mainnet.base.org".parse().unwrap());
211 | 
212 |         let factory = super::AerodromeFactory::new(provider);
213 | 
214 |         let pool = factory
215 |             .get_pool(U_SUI, WETH, crate::I24::try_from(200).unwrap())
216 |             .await
217 |             .unwrap();
218 | 
219 |         let _ = pool.price().await.unwrap();
220 |     }
221 | }
222 | 


--------------------------------------------------------------------------------
/src/alloy_pool/mod.rs:
--------------------------------------------------------------------------------
1 | pub mod factory;
2 | pub mod pool;
3 | 


--------------------------------------------------------------------------------
/src/alloy_pool/pool.rs:
--------------------------------------------------------------------------------
  1 | use std::future::Future;
  2 | 
  3 | use crate::error::V3PoolError;
  4 | use crate::math::Tick;
  5 | use crate::position::Balances;
  6 | use crate::traits::{Batch, IntoFloat};
  7 | // use crate::pool::{FeeTier, Tick, TickSpacing, V3Pool, V3PoolError};
  8 | use crate::{AlloyManager, PoolResult, V3Pool};
  9 | use alloy::contract::Error as ContractError;
 10 | use alloy::network::Network;
 11 | use alloy::primitives::Signed;
 12 | use alloy::primitives::{Address, Uint};
 13 | use alloy::providers::Provider;
 14 | use alloy::transports::{Transport, TransportError};
 15 | 
 16 | use rug::Float;
 17 | use V3PoolContract::V3PoolContractInstance;
 18 | 
 19 | pub type Pool<T, P, N> = AlloyPool<T, P, N, VanillaMarker>;
 20 | 
 21 | #[cfg(feature = "aerodrome")]
 22 | pub type AerodromePool<T, P, N> = AlloyPool<T, P, N, AerodromeMarker>;
 23 | 
 24 | alloy::sol! {
 25 |     #[derive(Debug)]
 26 |     #[sol(rpc)]
 27 |     interface V3PoolContract {
 28 |         /// @notice The currently in range liquidity available to the pool
 29 |         /// @dev This value has no relationship to the total liquidity across all ticks
 30 |         function liquidity() external view returns (uint128);
 31 | 
 32 |         /// @notice The first of the two tokens of the pool, sorted by address
 33 |         /// @return The token contract address
 34 |         function token0() external view returns (address);
 35 | 
 36 |         /// @notice The second of the two tokens of the pool, sorted by address
 37 |         /// @return The token contract address
 38 |         function token1() external view returns (address);
 39 | 
 40 |         /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6
 41 |         /// @return The fee
 42 |         function fee() external view returns (uint24);
 43 | 
 44 |         /// @notice The pool tick spacing
 45 |         /// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive
 46 |         /// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ...
 47 |         /// This value is an int24 to avoid casting even though it is always positive.
 48 |         /// @return The tick spacing
 49 |         function tickSpacing() external view returns (int24);
 50 |     }
 51 | 
 52 |     #[sol(rpc)]
 53 |     interface Vanilla {
 54 |         function slot0()
 55 |             external
 56 |             view
 57 |             returns (
 58 |                 uint160 sqrtPriceX96,
 59 |                 int24 tick,
 60 |                 uint16 observationIndex,
 61 |                 uint16 observationCardinality,
 62 |                 uint16 observationCardinalityNext,
 63 |                 uint8 feeProtocol,
 64 |                 bool unlocked
 65 |             );
 66 | 
 67 |         function ticks(int24 tick)
 68 |             external
 69 |             view
 70 |             returns (
 71 |                 uint128 liquidityGross,
 72 |                 int128 liquidityNet,
 73 |                 uint256 feeGrowthOutside0X128,
 74 |                 uint256 feeGrowthOutside1X128,
 75 |                 int56 tickCumulativeOutside,
 76 |                 uint160 secondsPerLiquidityOutsideX128,
 77 |                 uint32 secondsOutside,
 78 |                 bool initialized
 79 |             );
 80 |     }
 81 | 
 82 |     #[sol(rpc)]
 83 |     #[cfg(feature = "aerodrome")]
 84 |     interface Aerodrome {
 85 |         function slot0()
 86 |             external
 87 |             view
 88 |             returns (
 89 |                 uint160 sqrtPriceX96,
 90 |                 int24 tick,
 91 |                 uint16 observationIndex,
 92 |                 uint16 observationCardinality,
 93 |                 uint16 observationCardinalityNext,
 94 |                 bool unlocked
 95 |             );
 96 | 
 97 |         function ticks(int24 tick)
 98 |             external
 99 |             view
100 |             returns (
101 |                 uint128 liquidityGross,
102 |                 int128 liquidityNet,
103 |                 int128 stakedLiquidityNet,
104 |                 uint256 feeGrowthOutside0X128,
105 |                 uint256 feeGrowthOutside1X128,
106 |                 uint256 rewardGrowthOutsideX128,
107 |                 int56 tickCumulativeOutside,
108 |                 uint160 secondsPerLiquidityOutsideX128,
109 |                 uint32 secondsOutside,
110 |                 bool initialized
111 |             );
112 |     }
113 | }
114 | 
115 | /// The alloy implementation of an on chain v3 pool.
116 | ///
117 | /// See the [crate::V3Pool] trait for more information
118 | pub struct AlloyPool<T, P, N, M> {
119 |     pool: V3PoolContractInstance<T, P, N>,
120 |     tick_spacing: Signed<24, 1>,
121 |     token0: Address,
122 |     token1: Address,
123 |     token0_decimals: u8,
124 |     token1_decimals: u8,
125 |     fee: Uint<24, 1>,
126 |     _marker: std::marker::PhantomData<M>,
127 | }
128 | 
129 | impl<T, P, N, M> AlloyPool<T, P, N, M>
130 | where
131 |     T: Transport + Clone,
132 |     P: Provider<T, N>,
133 |     N: Network,
134 | {
135 |     pub async fn new(
136 |         pool: V3PoolContractInstance<T, P, N>,
137 |     ) -> Result<Self, alloy::contract::Error> {
138 |         let token0 = pool.token0().call().await?._0;
139 |         let token1 = pool.token1().call().await?._0;
140 | 
141 |         let token0_decimals = crate::utils::decimals(pool.provider(), token0).await?;
142 |         let token1_decimals = crate::utils::decimals(pool.provider(), token1).await?;
143 | 
144 |         let tick_spacing = pool.tickSpacing().call().await?._0;
145 |         let fee = pool.fee().call().await?._0;
146 | 
147 |         Ok(Self {
148 |             pool,
149 |             tick_spacing,
150 |             token0,
151 |             token1,
152 |             token0_decimals,
153 |             token1_decimals,
154 |             fee,
155 |             _marker: std::marker::PhantomData,
156 |         })
157 |     }
158 | }
159 | 
160 | impl<T, P, N, M> AlloyPool<T, P, N, M>
161 | where
162 |     T: Transport + Clone,
163 |     P: Provider<T, N>,
164 |     N: Network,
165 |     Self: V3Pool<BackendError = alloy::contract::Error>,
166 | {
167 |     /// Get the (NFT) LP balance owned by the address
168 |     ///
169 |     /// # Errors
170 |     /// - If the chain constants are not supported (see [crate::constants::NETWORKS] & [Self::lp_balance_with_manager])
171 |     pub async fn lp_balance(
172 |         &self,
173 |         who: Address,
174 |     ) -> Result<Balances<Self>, V3PoolError<alloy::contract::Error>> {
175 |         let chain_id = self
176 |             .pool
177 |             .provider()
178 |             .get_chain_id()
179 |             .await
180 |             .map_err(TransportError::from)
181 |             .map_err(alloy::contract::Error::from)
182 |             .map_err(V3PoolError::backend_error)?;
183 | 
184 |         let manager = AlloyManager::new(
185 |             crate::constants::NETWORKS
186 |                 .get(&chain_id)
187 |                 .ok_or(V3PoolError::UnsupportedChain)?
188 |                 .manager,
189 |             self.pool.provider(),
190 |         );
191 | 
192 |         manager.total_positions_balance(self, who).await
193 |     }
194 | 
195 |     /// Returns all the NFT liquidty positions for this manager
196 |     ///
197 |     /// Manager: The nft position manager contract to query
198 |     pub async fn lp_balance_with_manager<P2>(
199 |         &self,
200 |         manager: &AlloyManager<T, P2, N>,
201 |         who: Address,
202 |     ) -> Result<Balances<Self>, V3PoolError<alloy::contract::Error>>
203 |     where
204 |         P2: Provider<T, N>,
205 |     {
206 |         manager.total_positions_balance(self, who).await
207 |     }
208 | }
209 | 
210 | #[async_trait::async_trait]
211 | impl<T, P, N, M> V3Pool for AlloyPool<T, P, N, M>
212 | where
213 |     T: Transport + Clone,
214 |     P: Provider<T, N>,
215 |     N: Network,
216 |     M: ForkMarker<T, P, N>,
217 | {
218 |     type BackendError = alloy::contract::Error;
219 | 
220 |     /// will error if the ticks arent n * spacing apart
221 |     async fn tick_range(
222 |         &self,
223 |         starting: Tick,
224 |         ending: Tick,
225 |     ) -> PoolResult<Vec<i128>, Self::BackendError> {
226 |         let spacing: i32 = self.tick_spacing.unchecked_into();
227 |         let mut down: bool = false;
228 | 
229 |         let differnce = starting - ending;
230 |         let differnce = differnce.abs();
231 |         let capactiy = differnce / spacing + 1;
232 | 
233 |         if capactiy > 500 {
234 |             // todo should we just maxx out?
235 |             return Err(V3PoolError::TooManyTicks);
236 |         }
237 | 
238 |         tracing::trace!("getting tick range");
239 |         tracing::trace!(
240 |             "starting: {:?}, ending: {:?}, spacing: {:?}",
241 |             starting,
242 |             ending,
243 |             spacing
244 |         );
245 |         tracing::trace!("difference: {}, capacity: {}", differnce, capactiy);
246 | 
247 |         if differnce % spacing != 0 {
248 |             let tick_spacing = self.tick_spacing;
249 | 
250 |             return Err(V3PoolError::BadTickRange(starting, ending, tick_spacing));
251 |         }
252 | 
253 |         if starting > ending {
254 |             down = true;
255 |         }
256 | 
257 |         if starting == ending {
258 |             return Ok(vec![]);
259 |         }
260 | 
261 |         Ok(M::liquidity_net(self, starting, ending, down)
262 |             .await
263 |             .map_err(V3PoolError::backend_error)?
264 |             .into_iter()
265 |             .map(|x| if down { -x } else { x })
266 |             .collect::<Vec<_>>())
267 |     }
268 | 
269 |     fn tick_spacing(&self) -> crate::I24 {
270 |         self.tick_spacing
271 |     }
272 | 
273 |     async fn current_liquidity(&self) -> Result<Float, V3PoolError<Self::BackendError>> {
274 |         let liquidity = self
275 |             .pool
276 |             .liquidity()
277 |             .call()
278 |             .await
279 |             .map_err(V3PoolError::backend_error)?;
280 | 
281 |         tracing::trace!("current liquidity: {}", liquidity._0);
282 | 
283 |         Ok(Float::with_val(100, liquidity._0))
284 |     }
285 | 
286 |     async fn sqrt_price_x96(&self) -> Result<Float, V3PoolError<Self::BackendError>> {
287 |         M::sqrt_price_x96(self)
288 |             .await
289 |             .map_err(V3PoolError::backend_error)
290 |     }
291 | 
292 |     async fn tick(&self, tick: Tick) -> Result<Float, V3PoolError<Self::BackendError>> {
293 |         M::tick(self, tick)
294 |             .await
295 |             .map_err(V3PoolError::backend_error)
296 |     }
297 | 
298 |     fn token0(&self) -> &Address {
299 |         &self.token0
300 |     }
301 | 
302 |     fn token1(&self) -> &Address {
303 |         &self.token1
304 |     }
305 | 
306 |     fn token0_decimals(&self) -> &u8 {
307 |         &self.token0_decimals
308 |     }
309 | 
310 |     fn token1_decimals(&self) -> &u8 {
311 |         &self.token1_decimals
312 |     }
313 | 
314 |     fn fee(&self) -> alloy::primitives::Uint<24, 1> {
315 |         self.fee
316 |     }
317 | 
318 |     fn address(&self) -> Address {
319 |         *self.pool.address()
320 |     }
321 | }
322 | 
323 | /// The vanilla implementation of an on chain v3 pool.
324 | pub struct VanillaMarker;
325 | 
326 | /// The aerodrome implementation of an on chain v3 pool. 
327 | #[cfg(feature = "aerodrome")]
328 | pub struct AerodromeMarker;
329 | 
330 | trait ForkMarker<T, P, N>: Sized + Send + Sync + 'static {
331 |     fn liquidity_net(
332 |         instance: &AlloyPool<T, P, N, Self>,
333 |         start: Tick,
334 |         end: Tick,
335 |         down: bool,
336 |     ) -> impl Future<Output = Result<Vec<i128>, ContractError>> + Send;
337 | 
338 |     fn tick(
339 |         instance: &AlloyPool<T, P, N, Self>,
340 |         tick: Tick,
341 |     ) -> impl Future<Output = Result<Float, ContractError>> + Send;
342 | 
343 |     fn sqrt_price_x96(
344 |         instance: &AlloyPool<T, P, N, Self>,
345 |     ) -> impl Future<Output = Result<Float, ContractError>> + Send;
346 | }
347 | 
348 | impl<T, P, N> ForkMarker<T, P, N> for VanillaMarker
349 | where
350 |     T: Transport + Clone,
351 |     P: Provider<T, N>,
352 |     N: Network,
353 | {
354 |     async fn liquidity_net(
355 |         instance: &AlloyPool<T, P, N, Self>,
356 |         start: Tick,
357 |         end: Tick,
358 |         down: bool,
359 |     ) -> Result<Vec<i128>, ContractError> {
360 |         let pool =
361 |             Vanilla::VanillaInstance::new(*instance.pool.address(), instance.pool.provider());
362 | 
363 |         let mut calls = Vec::new();
364 |         let mut current = start;
365 |         // we know this should happen because we check that the diff is a multiple of the spacing
366 |         while current != end {
367 |             calls.push(pool.ticks(current.into()));
368 | 
369 |             if down {
370 |                 current = current.down(instance.tick_spacing);
371 |             } else {
372 |                 current = current.up(instance.tick_spacing);
373 |             }
374 |         }
375 | 
376 |         Ok(calls
377 |             .batch()
378 |             .call()
379 |             .await?
380 |             .into_iter()
381 |             .map(|x| x.liquidityNet)
382 |             .collect())
383 |     }
384 | 
385 |     async fn tick(instance: &AlloyPool<T, P, N, Self>, tick: Tick) -> Result<Float, ContractError> {
386 |         let pool =
387 |             Vanilla::VanillaInstance::new(*instance.pool.address(), instance.pool.provider());
388 | 
389 |         pool.ticks(tick.into())
390 |             .call()
391 |             .await
392 |             .map(|x| Float::with_val(100, x.liquidityNet))
393 |     }
394 | 
395 |     async fn sqrt_price_x96(instance: &AlloyPool<T, P, N, Self>) -> Result<Float, ContractError> {
396 |         let pool =
397 |             Vanilla::VanillaInstance::new(*instance.pool.address(), instance.pool.provider());
398 | 
399 |         pool.slot0()
400 |             .call()
401 |             .await
402 |             .map(|x| x.sqrtPriceX96.into_float())
403 |     }
404 | }
405 | 
406 | #[cfg(feature = "aerodrome")]
407 | impl<T, P, N> ForkMarker<T, P, N> for AerodromeMarker
408 | where
409 |     T: Transport + Clone,
410 |     P: Provider<T, N>,
411 |     N: Network,
412 | {
413 |     async fn liquidity_net(
414 |         instance: &AlloyPool<T, P, N, Self>,
415 |         start: Tick,
416 |         end: Tick,
417 |         down: bool,
418 |     ) -> Result<Vec<i128>, ContractError> {
419 |         let pool =
420 |             Aerodrome::AerodromeInstance::new(*instance.pool.address(), instance.pool.provider());
421 | 
422 |         let mut calls = Vec::new();
423 |         let mut current = start;
424 |         // we know this should happen because we check that the diff is a multiple of the spacing
425 |         while current != end {
426 |             calls.push(pool.ticks(current.into()));
427 | 
428 |             if down {
429 |                 current = current.down(instance.tick_spacing);
430 |             } else {
431 |                 current = current.up(instance.tick_spacing);
432 |             }
433 |         }
434 | 
435 |         Ok(calls
436 |             .batch()
437 |             .call()
438 |             .await?
439 |             .into_iter()
440 |             .map(|x| x.liquidityNet)
441 |             .collect())
442 |     }
443 | 
444 |     async fn tick(instance: &AlloyPool<T, P, N, Self>, tick: Tick) -> Result<Float, ContractError> {
445 |         let pool =
446 |             Aerodrome::AerodromeInstance::new(*instance.pool.address(), instance.pool.provider());
447 | 
448 |         pool.ticks(tick.into())
449 |             .call()
450 |             .await
451 |             .map(|x| Float::with_val(100, x.liquidityNet))
452 |     }
453 | 
454 |     async fn sqrt_price_x96(instance: &AlloyPool<T, P, N, Self>) -> Result<Float, ContractError> {
455 |         let pool =
456 |             Aerodrome::AerodromeInstance::new(*instance.pool.address(), instance.pool.provider());
457 | 
458 |         pool.slot0()
459 |             .call()
460 |             .await
461 |             .map(|x| x.sqrtPriceX96.into_float())
462 |     }
463 | }
464 | 


--------------------------------------------------------------------------------
/src/constants.rs:
--------------------------------------------------------------------------------
 1 | use alloy::primitives::{address, Address};
 2 | 
 3 | pub const MULTICALL3: Address = address!("cA11bde05977b3631167028862bE2a173976CA11");
 4 | 
 5 | pub struct ChainConstants {
 6 |     pub factory: Address,
 7 |     pub manager: Address,
 8 |     pub quoter_v2: Address,
 9 |     pub supports_multicall: bool,
10 | }
11 | 
12 | pub const MAINNET: ChainConstants = ChainConstants {
13 |     factory: address!("1F98431c8aD98523631AE4a59f267346ea31F984"),
14 |     manager: address!("C36442b4a4522E871399CD717aBDD847Ab11FE88"),
15 |     quoter_v2: address!("61fFE014bA17989E743c5F6cB21bF9697530B21e"),
16 |     supports_multicall: true,
17 | };
18 | 
19 | pub const ARBITRUM: ChainConstants = ChainConstants {
20 |     factory: address!("1F98431c8aD98523631AE4a59f267346ea31F984"),
21 |     manager: address!("C36442b4a4522E871399CD717aBDD847Ab11FE88"),
22 |     quoter_v2: address!("61fFE014bA17989E743c5F6cB21bF9697530B21e"),
23 |     supports_multicall: true,
24 | };
25 | 
26 | pub const OPTIMISM: ChainConstants = ChainConstants {
27 |     factory: address!("1F98431c8aD98523631AE4a59f267346ea31F984"),
28 |     manager: address!("C36442b4a4522E871399CD717aBDD847Ab11FE88"),
29 |     quoter_v2: address!("61fFE014bA17989E743c5F6cB21bF9697530B21e"),
30 |     supports_multicall: true,
31 | };
32 | 
33 | pub const POLYGON: ChainConstants = ChainConstants {
34 |     factory: address!("1F98431c8aD98523631AE4a59f267346ea31F984"),
35 |     manager: address!("C36442b4a4522E871399CD717aBDD847Ab11FE88"),
36 |     quoter_v2: address!("61fFE014bA17989E743c5F6cB21bF9697530B21e"),
37 |     supports_multicall: true,
38 | };
39 | 
40 | pub const BASE: ChainConstants = ChainConstants {
41 |     factory: address!("33128a8fC17869897dcE68Ed026d694621f6FDfD"),
42 |     manager: address!("03a520b32C04BF3bEEf7BEb72E919cf822Ed34f1"),
43 |     quoter_v2: address!("3d4e44Eb1374240CE5F1B871ab261CD16335B76a"),
44 |     supports_multicall: true,
45 | };
46 | 
47 | // todo check multicall
48 | pub const BNB: ChainConstants = ChainConstants {
49 |     factory: address!("dB1d10011AD0Ff90774D0C6Bb92e5C5c8b4461F7"),
50 |     manager: address!("7b8A01B39D58278b5DE7e48c8449c9f4F5170613"),
51 |     quoter_v2: address!("78D78E420Da98ad378D7799bE8f4AF69033EB077"),
52 |     supports_multicall: false,
53 | };
54 | 
55 | // todo check multicall
56 | pub const AVAX: ChainConstants = ChainConstants {
57 |     factory: address!("740b1c1de25031C31FF4fC9A62f554A55cdC1baD"),
58 |     manager: address!("655C406EBFa14EE2006250925e54ec43AD184f8B"),
59 |     quoter_v2: address!("be0F5544EC67e9B3b2D979aaA43f18Fd87E6257F"),
60 |     supports_multicall: false,
61 | };
62 | 
63 | // todo check multicall
64 | pub const CELO: ChainConstants = ChainConstants {
65 |     factory: address!("AfE208a311B21f13EF87E33A90049fC17A7acDEc"),
66 |     manager: address!("3d79EdAaBC0EaB6F08ED885C05Fc0B014290D95A"),
67 |     quoter_v2: address!("82825d0554fA07f7FC52Ab63c961F330fdEFa8E8"),
68 |     supports_multicall: false,
69 | };
70 | 
71 | pub static NETWORKS: phf::Map<u64, ChainConstants> = phf::phf_map! {
72 |     1_u64 => MAINNET,
73 |     42161_u64 => ARBITRUM,
74 |     10_u64 => OPTIMISM,
75 |     137_u64 => POLYGON,
76 |     8453_u64 => BASE,
77 |     56_u64 => BNB,
78 |     43114_u64 => AVAX,
79 |     42220_u64 => CELO,
80 | };
81 | 


--------------------------------------------------------------------------------
/src/error.rs:
--------------------------------------------------------------------------------
 1 | use crate::math::Tick;
 2 | use alloy::primitives::Signed;
 3 | use rug::float::ParseFloatError;
 4 | use std::error::Error;
 5 | 
 6 | use crate::math::BoundsError;
 7 | 
 8 | #[derive(Debug, thiserror::Error)]
 9 | pub enum V3PoolError<E: Error> {
10 |     #[error("Error parsing float: {0}")]
11 |     ParseError(#[from] ParseFloatError),
12 |     #[error("Backend error: {0}")]
13 |     BackendError(E),
14 |     #[error("Bounds error: {0}")]
15 |     BoundsError(#[from] BoundsError),
16 |     #[error("Pool not found")]
17 |     PoolNotFound,
18 |     #[error("Bad tick range: {0:?} {1:?} {2:?}")]
19 |     BadTickRange(Tick, Tick, Signed<24, 1>),
20 |     #[error("Too many ticks")]
21 |     TooManyTicks,
22 |     #[error("Unsupported Chain")]
23 |     UnsupportedChain,
24 | }
25 | 
26 | impl<E: Error> V3PoolError<E> {
27 |     pub fn backend_error(e: E) -> Self {
28 |         V3PoolError::BackendError(e)
29 |     }
30 | }
31 | 


--------------------------------------------------------------------------------
/src/lib.rs:
--------------------------------------------------------------------------------
 1 | #![doc = include_str!("../README.md")]
 2 | 
 3 | #[macro_use]
 4 | mod macros;
 5 | 
 6 | pub mod traits;
 7 | 
 8 | /// Addresses from Uniswap and things like that
 9 | pub mod constants;
10 | 
11 | /// The Alloy Implementation of the [crate::V3Pool] trait
12 | pub mod alloy_pool;
13 | #[doc(inline)]
14 | pub use alloy_pool::{
15 |     factory::Factory,
16 |     pool::Pool,
17 | };
18 | 
19 | #[cfg(feature = "aerodrome")]
20 | pub use alloy_pool::{pool::AerodromePool, factory::AerodromeFactory};
21 | 
22 | pub mod pool;
23 | #[doc(inline)]
24 | pub use pool::{price::PriceExt, PoolResult, V3Pool};
25 | 
26 | mod position;
27 | #[doc(inline)]
28 | pub use position::{Manager as AlloyManager, PositionsReturn};
29 | 
30 | /// The error type that is returned from interacting with a [crate::V3Pool]
31 | pub mod error;
32 | 
33 | /// The math module contains all the math functions that are used in the library
34 | pub mod math;
35 | 
36 | /// Some useful types that are used in the library
37 | pub mod types;
38 | #[doc(inline)]
39 | pub use types::{FeeTier, PoolPrice, TickSpacing, Token as TokenIdx, TokenAmount};
40 | 
41 | pub type I24 = alloy::primitives::Signed<24, 1>;
42 | 
43 | mod utils {
44 |     use alloy::contract::Error;
45 |     use alloy::network::Network;
46 |     use alloy::primitives::Address;
47 |     use alloy::providers::Provider;
48 |     use alloy::transports::Transport;
49 |     use ERC20::ERC20Instance;
50 | 
51 |     alloy::sol! {
52 |         #[derive(Debug)]
53 |         #[sol(rpc)]
54 |         interface ERC20 {
55 |             function decimals() external view returns (uint8);
56 |         }
57 |     }
58 | 
59 |     pub async fn decimals<T, N, P>(provider: P, address: Address) -> Result<u8, Error>
60 |     where
61 |         T: Transport + Clone,
62 |         P: Provider<T, N>,
63 |         N: Network,
64 |     {
65 |         let instance = ERC20Instance::new(address, provider);
66 | 
67 |         instance.decimals().call().await.map(|v| v._0)
68 |     }
69 | }
70 | 


--------------------------------------------------------------------------------
/src/macros.rs:
--------------------------------------------------------------------------------
1 | #[macro_use]
2 | mod token_amount;
3 | 
4 | #[macro_use]
5 | mod wrappers;
6 | 


--------------------------------------------------------------------------------
/src/macros/token_amount.rs:
--------------------------------------------------------------------------------
 1 | macro_rules! impl_token_amount_cmp_eq_inner {
 2 |     ($token_amount:ident, $($native:ty),* $(,)?) => {
 3 |         $(
 4 |             impl<'a, P: V3Pool> PartialEq<$native> for $token_amount<'a, P> {
 5 |                 fn eq(&self, other: &$native) -> bool {
 6 |                     let scaled = ::rug::Float::with_val(100, *other) * ::rug::Float::with_val(100, 10).pow(*self.decimals());
 7 | 
 8 |                     self.amount.eq(&scaled.floor())
 9 |                 }
10 |             }
11 | 
12 |             impl<'a, P: V3Pool> PartialOrd<$native> for $token_amount<'a, P> {
13 |                 fn partial_cmp(&self, other: &$native) -> Option<std::cmp::Ordering> {
14 |                     let scaled = ::rug::Float::with_val(100, *other) * ::rug::Float::with_val(100, 10).pow(*self.decimals());
15 | 
16 |                     self.amount.partial_cmp(&scaled.floor())
17 |                 }
18 |             }
19 | 
20 |             impl<'a, P: V3Pool> PartialEq<$token_amount<'a, P>> for $native {
21 |                 fn eq(&self, other: &$token_amount<'a, P>) -> bool {
22 |                     let scaled = ::rug::Float::with_val(100, *self) * ::rug::Float::with_val(100, 10).pow(*other.decimals());
23 | 
24 |                     scaled.floor().eq(&other.amount)
25 |                 }
26 |             }
27 | 
28 |             impl<'a, P: V3Pool> PartialOrd<$token_amount<'a, P>> for $native {
29 |                 fn partial_cmp(&self, other: &$token_amount<'a, P>) -> Option<std::cmp::Ordering> {
30 |                     let scaled = ::rug::Float::with_val(100, *self) * ::rug::Float::with_val(100, 10).pow(*other.decimals());
31 | 
32 |                     scaled.floor().partial_cmp(&other.amount)
33 |                 }
34 |             }
35 | 
36 |             impl<'a, P: V3Pool> IntoTokenAmount<'a, P> for $native {
37 |                 fn into_token_amount(self, pool: &'a P, token: TokenIdx) -> $token_amount<'a, P> {
38 |                     let decimals = match token {
39 |                         TokenIdx::Zero => pool.token0_decimals(),
40 |                         TokenIdx::One => pool.token1_decimals(),
41 |                     };
42 | 
43 |                     let scaled = rug::Float::with_val(100, self) * rug::Float::with_val(100, 10).pow(decimals);
44 | 
45 |                     $token_amount::from_scaled(pool, token, scaled.floor())
46 |                 }
47 |             }
48 |         )*
49 |     }
50 | }
51 | 
52 | /// Implement token amount comparison and equality for native types
53 | ///
54 | /// Native types will be scaled to match the token amount's decimals
55 | macro_rules! impl_token_amount_cmp_eq_native {
56 |     ($name:ident) => {
57 |         impl_token_amount_cmp_eq_inner! {
58 |             $name,
59 |             usize,
60 |             u8,
61 |             u16,
62 |             u32,
63 |             u64,
64 |             f32,
65 |             f64,
66 |             i8,
67 |             i16,
68 |             i32,
69 |             i64,
70 |         }
71 |     };
72 | }
73 | 


--------------------------------------------------------------------------------
/src/macros/wrappers.rs:
--------------------------------------------------------------------------------
  1 | /// Implements conversions and operations on the type
  2 | ///
  3 | /// The type must impl `Add`, `Sub`, `Mul`, `Div`
  4 | macro_rules! impl_wrappers {
  5 |     (
  6 |         $(
  7 |             $(#[$attrs:meta])*
  8 |             pub struct $name:ident($vis:vis $inner:ty);
  9 |         )*
 10 |     ) => {
 11 |         $(
 12 |             $(#[$attrs])*
 13 |             pub struct $name($vis $inner);
 14 | 
 15 |             impl $name {
 16 |                 #[inline]
 17 |                 /// Get the wrapped value by consuming the wrapper
 18 |                 pub fn into_inner(self) -> $inner {
 19 |                     self.0
 20 |                 }
 21 |             }
 22 | 
 23 |             impl From<$name> for $inner {
 24 |                 fn from(inner: $name) -> Self {
 25 |                     inner.0
 26 |                 }
 27 |             }
 28 | 
 29 |             impl ::std::ops::Deref for $name {
 30 |                 type Target = $inner;
 31 | 
 32 |                 fn deref(&self) -> &Self::Target {
 33 |                     &self.0
 34 |                 }
 35 |             }
 36 | 
 37 |             impl ::std::ops::DerefMut for $name {
 38 |                 fn deref_mut(&mut self) -> &mut Self::Target {
 39 |                     &mut self.0
 40 |                 }
 41 |             }
 42 | 
 43 |             impl ::std::ops::Add for $name {
 44 |                 type Output = $inner;
 45 | 
 46 |                 fn add(self, rhs: Self) -> Self::Output {
 47 |                     self.0 + rhs.0
 48 |                 }
 49 |             }
 50 | 
 51 |             impl ::std::ops::Add<$inner> for $name {
 52 |                 type Output = $inner;
 53 | 
 54 |                 fn add(self, rhs: $inner) -> Self::Output {
 55 |                     self.0 + rhs
 56 |                 }
 57 |             }
 58 | 
 59 |             impl ::std::ops::Add<$name> for $inner {
 60 |                 type Output = $inner;
 61 | 
 62 |                 fn add(self, rhs: $name) -> Self::Output {
 63 |                     self + rhs.0
 64 |                 }
 65 |             }
 66 | 
 67 |             impl ::std::ops::Sub for $name {
 68 |                 type Output = $inner;
 69 | 
 70 |                 fn sub(self, rhs: Self) -> Self::Output {
 71 |                     self.0 - rhs.0
 72 |                 }
 73 |             }
 74 | 
 75 |             impl ::std::ops::Sub<$inner> for $name {
 76 |                 type Output = $inner;
 77 | 
 78 |                 fn sub(self, rhs: $inner) -> Self::Output {
 79 |                     self.0 - rhs
 80 |                 }
 81 |             }
 82 | 
 83 |             impl ::std::ops::Sub<$name> for $inner {
 84 |                 type Output = $inner;
 85 | 
 86 |                 fn sub(self, rhs: $name) -> Self::Output {
 87 |                     self - rhs.0
 88 |                 }
 89 |             }
 90 | 
 91 |             impl ::std::ops::Mul for $name {
 92 |                 type Output = $inner;
 93 | 
 94 |                 fn mul(self, rhs: Self) -> Self::Output {
 95 |                     self.0 * rhs.0
 96 |                 }
 97 |             }
 98 | 
 99 |             impl ::std::ops::Mul<$inner> for $name {
100 |                 type Output = $inner;
101 | 
102 |                 fn mul(self, rhs: $inner) -> Self::Output {
103 |                    self.0 * rhs
104 |                 }
105 |             }
106 | 
107 |             impl ::std::ops::Mul<$name> for $inner {
108 |                 type Output = $inner;
109 | 
110 |                 fn mul(self, rhs: $name) -> Self::Output {
111 |                     self * rhs.0
112 |                 }
113 |             }
114 | 
115 |             impl ::std::ops::Div for $name {
116 |                 type Output = $inner;
117 | 
118 |                 fn div(self, rhs: Self) -> Self::Output {
119 |                     self.0 / rhs.0
120 |                 }
121 |             }
122 | 
123 |             impl ::std::ops::Div<$inner> for $name {
124 |                 type Output = $inner;
125 | 
126 |                 fn div(self, rhs: $inner) -> Self::Output {
127 |                    self.0 / rhs
128 |                 }
129 |             }
130 | 
131 |             impl ::std::ops::Div<$name> for $inner {
132 |                 type Output = $inner;
133 | 
134 |                 fn div(self, rhs: $name) -> Self::Output {
135 |                     self / rhs.0
136 |                 }
137 |             }
138 |         )*
139 |     };
140 | }
141 | 


--------------------------------------------------------------------------------
/src/math.rs:
--------------------------------------------------------------------------------
1 | pub mod liquidity;
2 | pub mod swap;
3 | pub mod tick;
4 | 
5 | mod wrappers;
6 | #[doc(inline)]
7 | pub use wrappers::{BoundsError, Price, SqrtPrice, Tick};
8 | 


--------------------------------------------------------------------------------
/src/math/liquidity.rs:
--------------------------------------------------------------------------------
 1 | use rug::Float;
 2 | 
 3 | use super::wrappers::SqrtPrice;
 4 | 
 5 | /// How much token0 is in the pool reserves given a price range and liquidity
 6 | pub fn real_token0_from_l(sqrt_current: SqrtPrice, sqrt_upper: SqrtPrice, l: Float) -> Float {
 7 |     let inverse_current = sqrt_current.into_inner().recip();
 8 |     let inverse_upper = sqrt_upper.into_inner().recip();
 9 | 
10 |     let real: Float = l * (inverse_current - inverse_upper);
11 | 
12 |     if real.is_sign_negative() {
13 |         // return 0
14 |         Float::with_val(256, 0)
15 |     } else {
16 |         real.floor()
17 |     }
18 | }
19 | 
20 | /// How much token1 is in the pool reserves given a price range and liquidity
21 | pub fn real_token1_from_l(sqrt_currnet: SqrtPrice, sqrt_lower: SqrtPrice, l: Float) -> Float {
22 |     let real = l * (sqrt_currnet - sqrt_lower);
23 | 
24 |     if real.is_sign_negative() {
25 |         // return 0
26 |         Float::with_val(256, 0)
27 |     } else {
28 |         real.floor()
29 |     }
30 | }
31 | 
32 | /// the `L` value of the pool given the amount of token0
33 | pub fn liqudity_from_real_token1(
34 |     sqrt_current: SqrtPrice,
35 |     sqrt_lower: SqrtPrice,
36 |     token1: Float,
37 | ) -> Float {
38 |     let l = token1 / (sqrt_current - sqrt_lower);
39 | 
40 |     l.floor()
41 | }
42 | 
43 | /// the `L` value of the pool given the amount of token1
44 | pub fn liqudity_from_real_token0(
45 |     sqrt_current: SqrtPrice,
46 |     sqrt_upper: SqrtPrice,
47 |     token0: Float,
48 | ) -> Float {
49 |     let inverse_current = sqrt_current.into_inner().recip();
50 |     let inverse_upper = sqrt_upper.into_inner().recip();
51 | 
52 |     let l = token0 / (inverse_current - inverse_upper);
53 | 
54 |     l.floor()
55 | }
56 | 


--------------------------------------------------------------------------------
/src/math/swap.rs:
--------------------------------------------------------------------------------
 1 | use rug::Float;
 2 | 
 3 | use super::wrappers::SqrtPrice;
 4 | 
 5 | /// How much token0 reserves will change given a change in price and a fixed amount of liquidity
 6 | pub fn token0_delta(sqrt_price: SqrtPrice, target_price: SqrtPrice, liquidity: Float) -> Float {
 7 |     let invert_target = target_price.into_inner().recip();
 8 |     let invert_price = sqrt_price.into_inner().recip();
 9 | 
10 |     let d0 = liquidity * (invert_target - invert_price);
11 | 
12 |     d0.floor()
13 | }
14 | 
15 | /// How much token1 reserves will change given a change in price and a fixed amount of liquidity
16 | pub fn token1_delta(sqrt_price: SqrtPrice, target_price: SqrtPrice, liquidity: Float) -> Float {
17 |     let d1 = liquidity * (target_price - sqrt_price);
18 | 
19 |     d1.floor()
20 | }
21 | 


--------------------------------------------------------------------------------
/src/math/tick.rs:
--------------------------------------------------------------------------------
 1 | use rug::ops::Pow;
 2 | use rug::Float;
 3 | 
 4 | use super::wrappers::{Price, Tick};
 5 | 
 6 | lazy_static::lazy_static! {
 7 |     pub static ref TICK_BASE: Float = Float::with_val(100, 1.0001);
 8 | 
 9 |     pub static ref LN_TICK_BASE: Float = TICK_BASE.clone().ln();
10 | }
11 | 
12 | /// the tick corresponding to this price
13 | ///
14 | /// # Caution
15 | /// this tick is not guaranteed to be initializable
16 | /// use [price_to_initializable_tick] if you need an initializable tick
17 | pub fn price_to_tick(price: Price) -> Tick {
18 |     // saftey: Price is assumed to be in range to produce a valid tick
19 |     unsafe {
20 |         Tick::new_unchecked(
21 |             // change of base log[1.0001](price)
22 |             (price.into_inner().ln() / &*LN_TICK_BASE)
23 |                 .to_i32_saturating_round(rug::float::Round::Down)
24 |                 .expect("Can create a valid i32 from a valid price"),
25 |         )
26 |     }
27 | }
28 | 
29 | /// the *initializable lower* tick corresponding to this price
30 | pub fn price_to_initializable_tick(price: Price, tick_spacing: crate::I24) -> Tick {
31 |     let spacing: i32 = tick_spacing.unchecked_into();
32 | 
33 |     // change of base log[1.0001](price)
34 |     let tick = price.into_inner().ln() / &*LN_TICK_BASE;
35 |     // our tick must be of the form spacing * n where n is an integer
36 |     let spacing_scalar = tick / spacing;
37 | 
38 |     // get the interger part of n and turn it back into the tick
39 |     // saftey: price is assumed to be in range to produce a valid tick
40 |     unsafe {
41 |         Tick::new_unchecked(
42 |             (spacing_scalar.floor() * spacing)
43 |                 .to_i32_saturating_round(rug::float::Round::Down)
44 |                 .expect("Can create a valid i32 from a valid price"),
45 |         )
46 |     }
47 | }
48 | 
49 | /// 1.0001^tick
50 | pub fn tick_to_price(tick: Tick) -> Price {
51 |     // saftey: tick is assumed to be in range to produce a valid price
52 |     unsafe { Price::new_unchecked(TICK_BASE.clone().pow(*tick)) }
53 | }
54 | 


--------------------------------------------------------------------------------
/src/math/wrappers.rs:
--------------------------------------------------------------------------------
  1 | use std::str::FromStr;
  2 | 
  3 | use alloy::primitives::{Signed, U256};
  4 | use lazy_static::lazy_static;
  5 | use rug::ops::Pow;
  6 | use rug::Float;
  7 | 
  8 | use crate::traits::IntoU256;
  9 | 
 10 | lazy_static! {
 11 |     pub static ref MAX_PRICE: Float = Float::with_val(100, 1.0001).pow(887272);
 12 |     pub static ref MIN_PRICE: Float = Float::with_val(100, 1.0001).pow(-887272);
 13 |     pub static ref MAX_SQRT_PRICE: Float = MAX_PRICE.clone().sqrt();
 14 |     pub static ref MIN_SQRT_PRICE: Float = MIN_PRICE.clone().sqrt();
 15 | }
 16 | 
 17 | #[derive(Clone, Debug)]
 18 | /// An error that occurs when a value is out of bounds for a type
 19 | /// checked at compile time
 20 | pub struct BoundsError(&'static str, String);
 21 | 
 22 | impl std::fmt::Display for BoundsError {
 23 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 24 |         write!(
 25 |             f,
 26 |             "Bounds error on type {}, given value: {}",
 27 |             self.0, self.1
 28 |         )
 29 |     }
 30 | }
 31 | 
 32 | impl std::error::Error for BoundsError {}
 33 | 
 34 | impl_wrappers! {
 35 |     /// A *valid* tick in the range [-887272, 887272]
 36 |     #[derive(Clone, Copy, Debug, PartialEq, PartialOrd, Ord, Eq)]
 37 |     pub struct Tick(i32);
 38 | 
 39 |     /// A raw in-range pool price
 40 |     #[derive(Clone, Debug, PartialEq, PartialOrd)]
 41 |     pub struct Price(Float);
 42 | 
 43 |     /// A raw in range sqrt pool sqrt price
 44 |     #[derive(Clone, Debug, PartialEq, PartialOrd)]
 45 |     pub struct SqrtPrice(Float);
 46 | }
 47 | 
 48 | impl Tick {
 49 |     /// Creates a new *valid* tick from an i32
 50 |     ///
 51 |     /// # Errors:
 52 |     /// - if the tick is less than -887272
 53 |     /// - if the tick is greater than 887272
 54 |     pub fn new(tick: i32) -> Result<Self, BoundsError> {
 55 |         if tick.abs() <= 887272 {
 56 |             Ok(Self(tick))
 57 |         } else {
 58 |             Err(BoundsError("Tick", tick.to_string()))
 59 |         }
 60 |     }
 61 | 
 62 |     /// Creates a new tick from an i32 without checking if it is valid
 63 |     /// useful for when youre reading directly from the pool
 64 |     ///
 65 |     /// # Safey: The tick should be in the range [-887272, 887272]
 66 |     pub unsafe fn new_unchecked(tick: i32) -> Self {
 67 |         Self(tick)
 68 |     }
 69 | 
 70 |     /// Returns the next initializable tick
 71 |     ///
 72 |     /// # Panics:
 73 |     /// - if the next tick is out of bounds
 74 |     pub fn up(self, spacing: crate::I24) -> Self {
 75 |         let spacing: i32 = spacing.unchecked_into();
 76 |         let scalar = self.0 / spacing + 1;
 77 |         let next_tick = scalar * spacing;
 78 | 
 79 |         if next_tick > 887272 {
 80 |             panic!("Up Tick OOB")
 81 |         } else {
 82 |             unsafe { Self::new_unchecked(next_tick) }
 83 |         }
 84 |     }
 85 | 
 86 |     /// Returns the previous initializable tick
 87 |     ///
 88 |     /// # Panics:
 89 |     /// - if the next tick is out of bounds
 90 |     pub fn down(self, spacing: crate::I24) -> Self {
 91 |         let spacing: i32 = spacing.unchecked_into();
 92 |         let scalar = self.0 / spacing - 1;
 93 |         let prev_tick = scalar * spacing;
 94 | 
 95 |         if prev_tick < -887272 {
 96 |             panic!("Down Tick OOB")
 97 |         } else {
 98 |             unsafe { Self::new_unchecked(prev_tick) }
 99 |         }
100 |     }
101 | }
102 | 
103 | impl Price {
104 |     /// Creates a new sqrt price from a float
105 |     ///
106 |     /// # Errors:
107 |     /// - if the price is less than the minimum price
108 |     /// - if the price is greater than the maximum price
109 |     pub fn new(float: Float) -> Result<Self, BoundsError> {
110 |         if float >= *MIN_PRICE && float <= *MAX_PRICE {
111 |             Ok(Self(float))
112 |         } else {
113 |             Err(BoundsError("Price", float.to_string()))
114 |         }
115 |     }
116 | 
117 |     pub fn invert(self) -> Self {
118 |         Self(self.0.recip())
119 |     }
120 | 
121 |     /// Creates a new price from a float without checking if it is valid
122 |     /// useful for when youre reading directly from the pool
123 |     ///
124 |     /// # Safety: The price should be in the range [MIN_PRICE, MAX_PRICE]
125 |     pub unsafe fn new_unchecked(float: Float) -> Self {
126 |         Self(float)
127 |     }
128 | }
129 | 
130 | impl SqrtPrice {
131 |     /// Creates a new sqrt price from a float
132 |     ///
133 |     /// # Errors:
134 |     /// - if the sqrt price is less than the minimum sqrt price
135 |     /// - if the sqrt price is greater than the maximum sqrt price
136 |     pub fn new(float: Float) -> Result<Self, BoundsError> {
137 |         if float >= *MIN_SQRT_PRICE && float <= *MAX_SQRT_PRICE {
138 |             Ok(Self(float))
139 |         } else {
140 |             Err(BoundsError("SqrtPrice", float.to_string()))
141 |         }
142 |     }
143 | 
144 |     /// Creates a new sqrt price from a float without checking if it is valid
145 |     /// useful for when youre reading directly from the pool
146 |     ///
147 |     /// # Safety: The sqrt price should be in the range [MIN_SQRT_PRICE, MAX_SQRT_PRICE]
148 |     pub unsafe fn new_unchecked(float: Float) -> Self {
149 |         Self(float)
150 |     }
151 | }
152 | 
153 | impl PartialOrd<Float> for Price {
154 |     fn partial_cmp(&self, other: &Float) -> Option<std::cmp::Ordering> {
155 |         self.0.partial_cmp(other)
156 |     }
157 | }
158 | 
159 | impl PartialOrd<Float> for SqrtPrice {
160 |     fn partial_cmp(&self, other: &Float) -> Option<std::cmp::Ordering> {
161 |         self.0.partial_cmp(other)
162 |     }
163 | }
164 | 
165 | impl PartialEq<Float> for Price {
166 |     fn eq(&self, other: &Float) -> bool {
167 |         self.0.eq(other)
168 |     }
169 | }
170 | 
171 | impl PartialEq<Float> for SqrtPrice {
172 |     fn eq(&self, other: &Float) -> bool {
173 |         self.0.eq(other)
174 |     }
175 | }
176 | 
177 | impl From<Price> for U256 {
178 |     fn from(price: Price) -> Self {
179 |         price
180 |             .0
181 |             .into_u256()
182 |             .expect("To convert a valid price wrapper to a u256")
183 |     }
184 | }
185 | 
186 | impl From<Price> for SqrtPrice {
187 |     fn from(price: Price) -> Self {
188 |         SqrtPrice(price.0.sqrt())
189 |     }
190 | }
191 | 
192 | impl From<SqrtPrice> for Price {
193 |     fn from(sqrt_price: SqrtPrice) -> Self {
194 |         Price(sqrt_price.0.pow(2))
195 |     }
196 | }
197 | 
198 | impl std::fmt::Display for Price {
199 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
200 |         write!(f, "{}", self.0)
201 |     }
202 | }
203 | 
204 | impl std::fmt::Display for SqrtPrice {
205 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
206 |         write!(f, "{}", self.0)
207 |     }
208 | }
209 | 
210 | impl From<Tick> for Signed<24, 1> {
211 |     fn from(tick: Tick) -> Self {
212 |         Signed::from_str(&tick.0.to_string()).expect("To convert a valid tick to a i24")
213 |     }
214 | }
215 | 
216 | #[cfg(test)]
217 | mod test {
218 |     use super::*;
219 | 
220 |     #[test]
221 |     fn test_cant_make_oob_tick() {
222 |         let tick = Tick::new(887273);
223 |         assert!(tick.is_err());
224 |     }
225 | 
226 |     #[test]
227 |     fn test_cant_make_oob_price() {
228 |         let price = Price::new(Float::with_val(100, 1.0001).pow(887273));
229 |         assert!(price.is_err());
230 |     }
231 | 
232 |     #[test]
233 |     fn test_cant_make_oob_sqrt_price() {
234 |         let sqrt_price = SqrtPrice::new(Float::with_val(100, 1.0001).pow(887273));
235 |         assert!(sqrt_price.is_err());
236 |     }
237 | }
238 | 


--------------------------------------------------------------------------------
/src/pool.rs:
--------------------------------------------------------------------------------
 1 | pub mod price;
 2 | pub mod swap;
 3 | 
 4 | use std::error::Error;
 5 | 
 6 | use crate::error::V3PoolError;
 7 | use crate::math::{Price, SqrtPrice, Tick};
 8 | 
 9 | use crate::PoolPrice;
10 | use crate::TokenIdx;
11 | use alloy::primitives::Address;
12 | use alloy::primitives::{Signed, Uint};
13 | use lazy_static::lazy_static;
14 | use rug::Float;
15 | 
16 | pub type PoolResult<T, E> = std::result::Result<T, V3PoolError<E>>;
17 | 
18 | lazy_static! {
19 |     pub static ref X96: Float = Float::with_val(100, 2u128.pow(96));
20 | }
21 | 
22 | /// [V3Pool] is the main trait of this library. It encompasses all the low level functions of a uniswapv3 pool
23 | #[async_trait::async_trait]
24 | pub trait V3Pool: Send + Sync + Sized {
25 |     type BackendError: Error + Send + Sync;
26 | 
27 |     /// The fee tier of the pool
28 |     fn fee(&self) -> Uint<24, 1>;
29 |     fn token0(&self) -> &Address;
30 |     fn token0_decimals(&self) -> &u8;
31 |     fn token1(&self) -> &Address;
32 |     fn token1_decimals(&self) -> &u8;
33 |     fn address(&self) -> Address;
34 | 
35 |     // The current in range liquidity of the pool
36 |     async fn current_liquidity(&self) -> PoolResult<Float, Self::BackendError>;
37 | 
38 |     /// The sqrt price of the pool scaled by 2^96
39 |     async fn sqrt_price_x96(&self) -> PoolResult<Float, Self::BackendError>;
40 | 
41 |     /// Returns the liqudity delta to be added if youre were crossing
42 |     /// into this tick as price is increasing
43 |     async fn tick(&self, tick: Tick) -> PoolResult<Float, Self::BackendError>;
44 | 
45 |     /// returns the deltas (accounting for direction) for ticks `[starting, ending)`
46 |     /// if starting == ending, returns []
47 |     /// ### Notice:
48 |     /// implementors should ensure that the returned amount is correct for the direction
49 |     /// Since tick delta should be added as price increase, a tick range can account for the opposite case
50 |     /// if ending < starting, you can flip the signs of the deltas
51 |     async fn tick_range(
52 |         &self,
53 |         starting: Tick,
54 |         ending: Tick,
55 |     ) -> PoolResult<Vec<i128>, Self::BackendError>;
56 | 
57 |     /// Returns the position of the token in the pool
58 |     fn position_of(&self, token: &Address) -> Option<TokenIdx> {
59 |         if token == self.token0() {
60 |             Some(TokenIdx::Zero)
61 |         } else if token == self.token1() {
62 |             Some(TokenIdx::One)
63 |         } else {
64 |             None
65 |         }
66 |     }
67 | 
68 |     /// Returns the tick spacing of the pool
69 |     fn tick_spacing(&self) -> Signed<24, 1>;
70 | 
71 |     /// The price of the pool (with decimals)
72 |     async fn price(&self) -> PoolResult<Price, Self::BackendError> {
73 |         Ok(self.sqrt_price().await?.into())
74 |     }
75 | 
76 |     /// The sqrt price of the pool (with decimals)
77 |     async fn sqrt_price(&self) -> PoolResult<SqrtPrice, Self::BackendError> {
78 |         // saftey: sqrt price comes from pool
79 |         Ok(unsafe { SqrtPrice::new_unchecked(self.sqrt_price_x96().await? / &*X96) })
80 |     }
81 | 
82 |     /// Returns the current [crate::PoolPrice] in terms of the numeraire
83 |     async fn pool_price(
84 |         &self,
85 |         numeraire: TokenIdx,
86 |     ) -> PoolResult<PoolPrice<'_, Self>, Self::BackendError> {
87 |         Ok(PoolPrice::from_price(self, self.price().await?, numeraire))
88 |     }
89 | }
90 | 


--------------------------------------------------------------------------------
/src/pool/price.rs:
--------------------------------------------------------------------------------
  1 | use crate::error::V3PoolError;
  2 | use crate::math::tick::{price_to_initializable_tick, tick_to_price};
  3 | use crate::math::{Price, SqrtPrice, Tick};
  4 | use crate::types::Deltas;
  5 | use crate::V3Pool;
  6 | 
  7 | #[async_trait::async_trait]
  8 | pub trait PriceExt: V3Pool {
  9 |     /// Returns the amount of token0 and token1 needed to move the pool price to the target price
 10 |     /// price_of_0_in_1 should not include the underlying nominal units
 11 |     async fn optimal_swap_for_price(
 12 |         &self,
 13 |         new_price: Price,
 14 |     ) -> Result<Deltas<Self>, V3PoolError<Self::BackendError>> {
 15 |         let mut current_liquidity = self.current_liquidity().await?;
 16 | 
 17 |         tracing::debug!("current L: {:?}", current_liquidity);
 18 | 
 19 |         let mut current_sqrt_price = self.sqrt_price().await?;
 20 |         let target_sqrt_price: SqrtPrice = new_price.into();
 21 | 
 22 |         tracing::debug!("current sqrt price: {:?}", current_sqrt_price);
 23 |         tracing::debug!("target sqrt price: {:?}", target_sqrt_price);
 24 | 
 25 |         // at this point we dont know if were going up or down
 26 |         // but either way these are always the "lower" prices but
 27 |         let starting_lower_tick =
 28 |             price_to_initializable_tick(current_sqrt_price.clone().into(), self.tick_spacing());
 29 | 
 30 |         let target_lower_tick: Tick =
 31 |             price_to_initializable_tick(target_sqrt_price.clone().into(), self.tick_spacing());
 32 | 
 33 |         tracing::trace!("starting_lower_tick {:?}", starting_lower_tick);
 34 |         tracing::trace!("target_lower_tick {:?}", target_lower_tick);
 35 | 
 36 |         let mut deltas = Deltas::new(self);
 37 |         let mut next_tick: Tick;
 38 |         let up = starting_lower_tick < target_lower_tick;
 39 |         let neq = starting_lower_tick != target_lower_tick;
 40 | 
 41 |         // if were in the same tick we want to just move to the price and exit from there
 42 |         // if were going up lets move to the boundry, include that boundry and then move into the loop
 43 |         // if were going down lets move to the boundry, include that boundry and then move into the loop
 44 |         let ticks = if up {
 45 |             tracing::debug!("current lower tick is less than target lower tick");
 46 |             tracing::debug!("were moving the price up");
 47 |             next_tick = starting_lower_tick.up(self.tick_spacing());
 48 | 
 49 |             // move the price to the next tick
 50 |             deltas.update(
 51 |                 current_liquidity.clone(),
 52 |                 current_sqrt_price,
 53 |                 tick_to_price(next_tick).into(),
 54 |             );
 55 | 
 56 |             // get the tick range from the current tick to the target tick
 57 |             self.tick_range(next_tick, target_lower_tick.up(self.tick_spacing()))
 58 |                 .await?
 59 |         } else if neq {
 60 |             tracing::debug!("current lower tick is greater than target lower tick");
 61 |             tracing::debug!("were moving the price down");
 62 |             next_tick = starting_lower_tick;
 63 | 
 64 |             // move the price to the next tick
 65 |             deltas.update(
 66 |                 current_liquidity.clone(),
 67 |                 current_sqrt_price,
 68 |                 tick_to_price(next_tick).into(),
 69 |             );
 70 | 
 71 |             // get the tick range from the current tick to the target tick
 72 |             self.tick_range(next_tick, target_lower_tick.down(self.tick_spacing()))
 73 |                 .await?
 74 |         } else {
 75 |             tracing::debug!("current lower tick is equal to target lower tick");
 76 | 
 77 |             deltas.update(current_liquidity, current_sqrt_price, target_sqrt_price);
 78 | 
 79 |             return Ok(deltas);
 80 |         };
 81 | 
 82 |         // todo we could make this faster with swapping and avoiding clones
 83 |         tracing::trace!("starting tick loop");
 84 |         let ticks = ticks.into_iter();
 85 |         for delta in ticks {
 86 |             current_liquidity += delta;
 87 |             if up {
 88 |                 next_tick = next_tick.up(self.tick_spacing());
 89 |                 current_sqrt_price = tick_to_price(next_tick).into();
 90 | 
 91 |                 let next_tick_price: SqrtPrice = tick_to_price(next_tick).into();
 92 |                 if next_tick_price > target_sqrt_price {
 93 |                     deltas.update(current_liquidity, current_sqrt_price, target_sqrt_price);
 94 | 
 95 |                     tracing::trace!(?up, "exiting tick loop");
 96 | 
 97 |                     break;
 98 |                 }
 99 |             } else {
100 |                 next_tick = next_tick.down(self.tick_spacing());
101 |                 current_sqrt_price = tick_to_price(next_tick).into();
102 | 
103 |                 let next_tick_price: SqrtPrice = tick_to_price(next_tick).into();
104 |                 if next_tick_price < target_sqrt_price {
105 |                     deltas.update(current_liquidity, current_sqrt_price, target_sqrt_price);
106 | 
107 |                     tracing::trace!(?up, "exiting tick loop");
108 | 
109 |                     break;
110 |                 }
111 |             }
112 | 
113 |             deltas.update(
114 |                 current_liquidity.clone(),
115 |                 current_sqrt_price,
116 |                 tick_to_price(next_tick).into(),
117 |             );
118 |         }
119 | 
120 |         Ok(deltas)
121 |     }
122 | }
123 | 
124 | impl<P: V3Pool> PriceExt for P {}
125 | 


--------------------------------------------------------------------------------
/src/pool/swap.rs:
--------------------------------------------------------------------------------
  1 | use crate::{types::IntoTokenAmount, TokenAmount, TokenIdx, V3Pool};
  2 | 
  3 | alloy::sol! {
  4 |     #[derive(Debug)]
  5 |     #[sol(rpc)]
  6 |     /// @title QuoterV2 Interface
  7 |     /// @notice Supports quoting the calculated amounts from exact input or exact output swaps.
  8 |     /// @notice For each pool also tells you the number of initialized ticks crossed and the sqrt price of the pool after the swap.
  9 |     /// @dev These functions are not marked view because they rely on calling non-view functions and reverting
 10 |     /// to compute the result. They are also not gas efficient and should not be called on-chain.
 11 |     interface IQuoterV2 {
 12 |         /// @notice Returns the amount out received for a given exact input swap without executing the swap
 13 |         /// @param path The path of the swap, i.e. each token pair and the pool fee
 14 |         /// @param amountIn The amount of the first token to swap
 15 |         /// @return amountOut The amount of the last token that would be received
 16 |         /// @return sqrtPriceX96AfterList List of the sqrt price after the swap for each pool in the path
 17 |         /// @return initializedTicksCrossedList List of the initialized ticks that the swap crossed for each pool in the path
 18 |         /// @return gasEstimate The estimate of the gas that the swap consumes
 19 |         function quoteExactInput(bytes memory path, uint256 amountIn)
 20 |             external
 21 |             returns (
 22 |                 uint256 amountOut,
 23 |                 uint160[] memory sqrtPriceX96AfterList,
 24 |                 uint32[] memory initializedTicksCrossedList,
 25 |                 uint256 gasEstimate
 26 |             );
 27 | 
 28 |         struct QuoteExactInputSingleParams {
 29 |             address tokenIn;
 30 |             address tokenOut;
 31 |             uint256 amountIn;
 32 |             uint24 fee;
 33 |             uint160 sqrtPriceLimitX96;
 34 |         }
 35 | 
 36 |         /// @notice Returns the amount out received for a given exact input but for a swap of a single pool
 37 |         /// @param params The params for the quote, encoded as `QuoteExactInputSingleParams`
 38 |         /// tokenIn The token being swapped in
 39 |         /// tokenOut The token being swapped out
 40 |         /// fee The fee of the token pool to consider for the pair
 41 |         /// amountIn The desired input amount
 42 |         /// sqrtPriceLimitX96 The price limit of the pool that cannot be exceeded by the swap
 43 |         /// @return amountOut The amount of `tokenOut` that would be received
 44 |         /// @return sqrtPriceX96After The sqrt price of the pool after the swap
 45 |         /// @return initializedTicksCrossed The number of initialized ticks that the swap crossed
 46 |         /// @return gasEstimate The estimate of the gas that the swap consumes
 47 |         function quoteExactInputSingle(QuoteExactInputSingleParams memory params)
 48 |             external
 49 |             returns (
 50 |                 uint256 amountOut,
 51 |                 uint160 sqrtPriceX96After,
 52 |                 uint32 initializedTicksCrossed,
 53 |                 uint256 gasEstimate
 54 |             );
 55 | 
 56 |         /// @notice Returns the amount in required for a given exact output swap without executing the swap
 57 |         /// @param path The path of the swap, i.e. each token pair and the pool fee. Path must be provided in reverse order
 58 |         /// @param amountOut The amount of the last token to receive
 59 |         /// @return amountIn The amount of first token required to be paid
 60 |         /// @return sqrtPriceX96AfterList List of the sqrt price after the swap for each pool in the path
 61 |         /// @return initializedTicksCrossedList List of the initialized ticks that the swap crossed for each pool in the path
 62 |         /// @return gasEstimate The estimate of the gas that the swap consumes
 63 |         function quoteExactOutput(bytes memory path, uint256 amountOut)
 64 |             external
 65 |             returns (
 66 |                 uint256 amountIn,
 67 |                 uint160[] memory sqrtPriceX96AfterList,
 68 |                 uint32[] memory initializedTicksCrossedList,
 69 |                 uint256 gasEstimate
 70 |             );
 71 | 
 72 |         struct QuoteExactOutputSingleParams {
 73 |             address tokenIn;
 74 |             address tokenOut;
 75 |             uint256 amount;
 76 |             uint24 fee;
 77 |             uint160 sqrtPriceLimitX96;
 78 |         }
 79 | 
 80 |         /// @notice Returns the amount in required to receive the given exact output amount but for a swap of a single pool
 81 |         /// @param params The params for the quote, encoded as `QuoteExactOutputSingleParams`
 82 |         /// tokenIn The token being swapped in
 83 |         /// tokenOut The token being swapped out
 84 |         /// fee The fee of the token pool to consider for the pair
 85 |         /// amountOut The desired output amount
 86 |         /// sqrtPriceLimitX96 The price limit of the pool that cannot be exceeded by the swap
 87 |         /// @return amountIn The amount required as the input for the swap in order to receive `amountOut`
 88 |         /// @return sqrtPriceX96After The sqrt price of the pool after the swap
 89 |         /// @return initializedTicksCrossed The number of initialized ticks that the swap crossed
 90 |         /// @return gasEstimate The estimate of the gas that the swap consumes
 91 |         function quoteExactOutputSingle(QuoteExactOutputSingleParams memory params)
 92 |             external
 93 |             returns (
 94 |                 uint256 amountIn,
 95 |                 uint160 sqrtPriceX96After,
 96 |                 uint32 initializedTicksCrossed,
 97 |                 uint256 gasEstimate
 98 |             );
 99 |     }
100 | }
101 | 
102 | // todo lookup for the quoter v2
103 | #[async_trait::async_trait]
104 | #[allow(unused)]
105 | trait SwapExt: V3Pool {
106 |     async fn amount_in<'a, T>(
107 |         &'a self,
108 |         amount_out: T,
109 |         token_idx: TokenIdx,
110 |     ) -> Result<TokenAmount<'a, Self>, Self::BackendError>
111 |     where
112 |         T: IntoTokenAmount<'a, Self> + Send,
113 |     {
114 |         todo!()
115 |     }
116 | 
117 |     async fn amount_out<'a, T>(
118 |         &'a self,
119 |         amount_in: T,
120 |         token_idx: TokenIdx,
121 |     ) -> Result<TokenAmount<'a, Self>, Self::BackendError>
122 |     where
123 |         T: IntoTokenAmount<'a, Self> + Send,
124 |     {
125 |         todo!()
126 |     }
127 | }
128 | 


--------------------------------------------------------------------------------
/src/position.rs:
--------------------------------------------------------------------------------
  1 | use std::fmt::Debug;
  2 | 
  3 | use crate::{
  4 |     error::V3PoolError,
  5 |     math::{SqrtPrice, Tick},
  6 |     traits::Batch,
  7 |     TokenAmount,
  8 | };
  9 | use alloy::{
 10 |     network::Network,
 11 |     primitives::{uint, Address, U256},
 12 |     providers::Provider,
 13 |     transports::Transport,
 14 | };
 15 | use rug::Float;
 16 | 
 17 | use crate::math::liquidity::{real_token0_from_l, real_token1_from_l};
 18 | use crate::math::tick::{price_to_tick, tick_to_price};
 19 | use crate::pool::V3Pool;
 20 | 
 21 | alloy::sol! {
 22 |     #[derive(Debug)]
 23 |     #[sol(rpc)]
 24 |     interface PositionManager {
 25 |         function positions(uint256 tokenId)
 26 |             external
 27 |             view
 28 |             returns (
 29 |                 uint96 nonce,
 30 |                 address operator,
 31 |                 address token0,
 32 |                 address token1,
 33 |                 uint24 fee,
 34 |                 int24 tickLower,
 35 |                 int24 tickUpper,
 36 |                 uint128 liquidity,
 37 |                 uint256 feeGrowthInside0LastX128,
 38 |                 uint256 feeGrowthInside1LastX128,
 39 |                 uint128 tokensOwed0,
 40 |                 uint128 tokensOwed1
 41 |             );
 42 | 
 43 |         function balanceOf(address owner) external view returns (uint256);
 44 | 
 45 |         function tokenOfOwnerByIndex(address owner, uint256 idx) returns (uint256);
 46 |     }
 47 | }
 48 | 
 49 | pub use PositionManager::positionsReturn as PositionsReturn;
 50 | 
 51 | /// A read only wrapper around the NFT position manager contract
 52 | pub struct Manager<T, P, N> {
 53 |     instance: PositionManager::PositionManagerInstance<T, P, N>,
 54 | }
 55 | 
 56 | #[derive(Clone)]
 57 | pub struct Balances<'a, P: V3Pool> {
 58 |     tokens: [TokenAmount<'a, P>; 2],
 59 | }
 60 | 
 61 | impl<'a, P: V3Pool> Debug for Balances<'a, P> {
 62 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 63 |         f.debug_struct("Balances")
 64 |             .field("token0", &self.tokens[0])
 65 |             .field("token1", &self.tokens[1])
 66 |             .finish()
 67 |     }
 68 | }
 69 | 
 70 | impl<'a, P: V3Pool> Balances<'a, P> {
 71 |     pub fn new(token0: TokenAmount<'a, P>, token1: TokenAmount<'a, P>) -> Self {
 72 |         Self {
 73 |             tokens: [token0, token1],
 74 |         }
 75 |     }
 76 | 
 77 |     pub fn token0(&self) -> &TokenAmount<'a, P> {
 78 |         &self.tokens[0]
 79 |     }
 80 | 
 81 |     pub fn token1(&self) -> &TokenAmount<'a, P> {
 82 |         &self.tokens[1]
 83 |     }
 84 | }
 85 | 
 86 | impl<T, P, N> Manager<T, P, N>
 87 | where
 88 |     T: Transport + Clone,
 89 |     P: Provider<T, N> + Clone,
 90 |     N: Network,
 91 | {
 92 |     pub fn new(address: Address, provider: P) -> Self {
 93 |         Self {
 94 |             instance: PositionManager::PositionManagerInstance::new(address, provider),
 95 |         }
 96 |     }
 97 | }
 98 | 
 99 | impl<T, P, N> Manager<T, P, N>
100 | where
101 |     T: Transport + Clone,
102 |     P: Provider<T, N>,
103 |     N: Network,
104 | {
105 |     pub async fn all_positions(
106 |         &self,
107 |         owner: Address,
108 |     ) -> Result<Vec<PositionsReturn>, alloy::contract::Error> {
109 |         let balance = self.instance.balanceOf(owner).call().await?._0;
110 | 
111 |         let mut calls = Vec::with_capacity(balance.saturating_to());
112 |         let mut i = U256::ZERO;
113 |         while i < balance {
114 |             calls.push(self.instance.tokenOfOwnerByIndex(owner, i));
115 |             i += uint!(1_U256);
116 |         }
117 | 
118 |         let ids = calls.batch().call().await?;
119 |         Ok(ids
120 |             .into_iter()
121 |             .map(|id| self.instance.positions(id._0))
122 |             .collect::<Vec<_>>()
123 |             .batch()
124 |             .call()
125 |             .await?)
126 |     }
127 | 
128 |     pub async fn total_positions_balance<'p, Pool>(
129 |         &self,
130 |         pool: &'p Pool,
131 |         owner: Address,
132 |     ) -> Result<Balances<'p, Pool>, V3PoolError<Pool::BackendError>>
133 |     where
134 |         Pool: V3Pool<BackendError = alloy::contract::Error>,
135 |     {
136 |         let positions = self
137 |             .all_positions(owner)
138 |             .await
139 |             .map_err(V3PoolError::backend_error)?
140 |             .into_iter()
141 |             .filter(|pos| {
142 |                 pos.token0 == *pool.token0()
143 |                     && pos.token1 == *pool.token1()
144 |                     && pos.fee == pool.fee()
145 |             })
146 |             .collect::<Vec<_>>();
147 | 
148 |         tracing::debug!("Positions for {:#?}:\n {:#?}", owner, positions);
149 | 
150 |         let sqrt_price = pool.sqrt_price().await?;
151 | 
152 |         let init = Balances {
153 |             tokens: [
154 |                 TokenAmount::zero(pool, crate::TokenIdx::Zero),
155 |                 TokenAmount::zero(pool, crate::TokenIdx::One),
156 |             ],
157 |         };
158 | 
159 |         Ok(positions
160 |             .iter()
161 |             .map(|pos| pos.token_balances(pool, sqrt_price.clone()))
162 |             .collect::<Vec<_>>()
163 |             .into_iter()
164 |             .fold(init, |mut acc, balance| {
165 |                 acc.tokens[0] += balance.token0().as_float();
166 |                 acc.tokens[1] += balance.token1().as_float();
167 | 
168 |                 acc
169 |             }))
170 |     }
171 | }
172 | 
173 | impl PositionsReturn {
174 |     pub fn token_balances<'a, P: V3Pool>(
175 |         &self,
176 |         pool: &'a P,
177 |         sqrt_price: SqrtPrice,
178 |     ) -> Balances<'a, P> {
179 |         let current_tick = price_to_tick(sqrt_price.clone().into());
180 | 
181 |         // saftey: comes from pool
182 |         let tick_upper = unsafe { Tick::new_unchecked(self.tickUpper.as_i32()) };
183 |         let tick_lower = unsafe { Tick::new_unchecked(self.tickLower.as_i32()) };
184 | 
185 |         let upper_price: SqrtPrice = tick_to_price(tick_upper).into();
186 |         let lower_price: SqrtPrice = tick_to_price(tick_lower).into();
187 | 
188 |         let l = Float::with_val(100, self.liquidity);
189 | 
190 |         let token0_amount = if current_tick >= tick_lower && current_tick < tick_upper {
191 |             real_token0_from_l(sqrt_price.clone(), upper_price.clone(), l.clone())
192 |         } else if current_tick < tick_lower {
193 |             real_token0_from_l(lower_price.clone(), upper_price.clone(), l.clone())
194 |         } else {
195 |             Float::with_val(18, 0)
196 |         };
197 | 
198 |         let token1_amount = if current_tick >= tick_lower && current_tick < tick_upper {
199 |             real_token1_from_l(sqrt_price, lower_price, l)
200 |         } else if current_tick > tick_upper {
201 |             real_token1_from_l(upper_price, lower_price, l)
202 |         } else {
203 |             Float::with_val(18, 0)
204 |         };
205 | 
206 |         Balances::new(
207 |             TokenAmount::from_scaled(pool, crate::TokenIdx::Zero, token0_amount),
208 |             TokenAmount::from_scaled(pool, crate::TokenIdx::One, token1_amount),
209 |         )
210 |     }
211 | }
212 | 


--------------------------------------------------------------------------------
/src/traits/basis_points.rs:
--------------------------------------------------------------------------------
 1 | pub trait ApplyBps {
 2 |     /// Scale value by 1 + bps / 10_000
 3 |     ///
 4 |     /// # Panics
 5 |     /// If bps > 10_000
 6 |     fn apply_bps_up(&self, bps: u16) -> Self;
 7 | 
 8 |     /// Scale value by 1 - bps / 10_000
 9 |     ///
10 |     /// # Panics
11 |     /// If bps > 10_000
12 |     fn apply_bps_down(&self, bps: u16) -> Self;
13 | }
14 | 
15 | impl<T> ApplyBps for T
16 | where
17 |     T: std::ops::Mul<u16, Output = T>
18 |         + std::ops::Div<u16, Output = T>
19 |         + std::ops::Mul<u16, Output = T>
20 |         + Clone,
21 | {
22 |     fn apply_bps_down(&self, bps: u16) -> Self {
23 |         assert!(bps <= 10_000, "bps must be <= 10_000");
24 | 
25 |         self.clone() * (10_000 - bps) / 10_000
26 |     }
27 | 
28 |     fn apply_bps_up(&self, bps: u16) -> Self {
29 |         assert!(bps <= 10_000, "bps must be <= 10_000");
30 | 
31 |         self.clone() * (10_000 + bps) / 10_000
32 |     }
33 | }
34 | 
35 | #[cfg(test)]
36 | mod test {
37 |     use super::ApplyBps;
38 |     use rug::Float;
39 | 
40 |     #[test]
41 |     fn test_apply_bps_up_float() {
42 |         let value = Float::with_val(100, 100);
43 |         // 100 bps = 1%
44 |         let result = value.apply_bps_up(100);
45 | 
46 |         assert_eq!(result, Float::with_val(100, 101));
47 |     }
48 | 
49 |     #[test]
50 |     fn test_apply_bps_down_float() {
51 |         let value = Float::with_val(100, 100);
52 |         // 100 bps = 1%
53 |         let result = value.apply_bps_down(100);
54 | 
55 |         assert_eq!(result, Float::with_val(100, 99));
56 |     }
57 | }
58 | 


--------------------------------------------------------------------------------
/src/traits/batch.rs:
--------------------------------------------------------------------------------
  1 | use alloy::contract::{CallBuilder, SolCallBuilder};
  2 | use alloy::network::Network;
  3 | use alloy::providers::Provider;
  4 | use alloy::sol;
  5 | use alloy::sol_types::SolCall;
  6 | use alloy::transports::Transport;
  7 | use alloy::network::TransactionBuilder;
  8 | 
  9 | pub trait Batch: Sized {
 10 |     /// Batch a collection of calls using one of the available batching strategies.
 11 |     fn batch(self) -> BatchCall<Self>;
 12 | }
 13 | 
 14 | impl<T, P, N, SC, I> Batch for I
 15 | where
 16 |     P: Provider<T, N>,
 17 |     I: IntoIterator<Item = SolCallBuilder<T, P, SC, N>>,
 18 |     SC: SolCall,
 19 |     T: Transport + Clone,
 20 |     N: Network,
 21 | {
 22 |     fn batch(self) -> BatchCall<I> {
 23 |         BatchCall { calls: self }
 24 |     }
 25 | }
 26 | 
 27 | pub struct BatchCall<I> {
 28 |     calls: I,
 29 | }
 30 | 
 31 | impl<T, P, N, SC, I> BatchCall<I>
 32 | where
 33 |     P: Provider<T, N>,
 34 |     I: IntoIterator<Item = SolCallBuilder<T, P, SC, N>>,
 35 |     SC: SolCall,
 36 |     T: Transport + Clone,
 37 |     N: Network,
 38 | {
 39 |     /// Note: https://github.com/rust-lang/rust/issues/110338
 40 |     ///
 41 |     /// You may need to collect your iterator before calling this function
 42 |     pub async fn call(self) -> Result<Vec<SC::Return>, alloy::contract::Error> {
 43 |         let mut iter = self.calls.into_iter();
 44 | 
 45 |         let Some(call) = iter.next() else {
 46 |             return Ok(vec![]);
 47 |         };
 48 | 
 49 |         // todo: Clone because upstream stops us from taking both the provideer and the tx_req
 50 |         let tx_req = call.as_ref().clone();
 51 | 
 52 |         let CallBuilder { provider, .. } = call;
 53 | 
 54 |         #[cfg(not(any(feature = "trace_callMany", feature = "eth_callMany")))]
 55 |         {
 56 |             use Multicall::{Call, MulticallInstance};
 57 | 
 58 |             #[cfg(debug_assertions)]
 59 |             {
 60 |                 let chain_id = provider.get_chain_id().await?;
 61 | 
 62 |                 if !crate::constants::NETWORKS
 63 |                     .get(&chain_id)
 64 |                     .map(|c| c.supports_multicall)
 65 |                     .unwrap_or(false)
 66 |                 {
 67 |                     tracing::error!("Chain does not support multicall, this call will fail");
 68 |                 }
 69 |             }
 70 | 
 71 |             let calls = std::iter::once(tx_req)
 72 |                 .chain(iter.map(|c| c.into_transaction_request()))
 73 |                 .map(|call| Call {
 74 |                     target: call.to().unwrap_or_default(),
 75 |                     callData: call.input().cloned().unwrap_or_default(),
 76 |                 })
 77 |                 .collect::<Vec<_>>();
 78 | 
 79 |             let multicall = MulticallInstance::new(crate::constants::MULTICALL3, provider);
 80 | 
 81 |             let data = multicall.aggregate(calls).call().await?.returnData;
 82 | 
 83 |             return data
 84 |                 .into_iter()
 85 |                 .map(|d| SC::abi_decode_returns(&d, true).map_err(alloy::contract::Error::from))
 86 |                 .collect();
 87 |         }
 88 | 
 89 |         #[cfg(feature = "trace_callMany")]
 90 |         {
 91 |             use alloy::providers::ext::TraceApi;
 92 |             use alloy::rpc::types::trace::parity::TraceType;
 93 | 
 94 |             let tt = vec![TraceType::Trace];
 95 |             return provider
 96 |                 .trace_call_many(
 97 |                     std::iter::once(tx_req)
 98 |                         .chain(iter.map(|call| call.into_transaction_request()))
 99 |                         .map(|call| (call, tt.as_slice()))
100 |                         .collect::<Vec<_>>()
101 |                         .as_slice(),
102 |                 )
103 |                 .await
104 |                 .map_err(alloy::contract::Error::from)?
105 |                 .into_iter()
106 |                 .filter_map(|r| match SC::abi_decode_returns(&r.output, true).ok() {
107 |                     Some(o) => Some(Ok(o)),
108 |                     None => {
109 |                         tracing::error!("Failed to decode return value: {:?}", r.output);
110 |                         None
111 |                     }
112 |                 })
113 |                 .collect();
114 |         }
115 | 
116 |         // todo: bundle is concrete over Eth::TxRequest
117 |         // #[cfg(feature = "eth_callMany")]
118 |         // {
119 |         //     use alloy::rpc::types::Bundle;
120 |         //     let bundle = Bundle {
121 |         //         transactions: std::iter::once(call)
122 |         //             .chain(iter.map(|call| call.into_transaction_request()))
123 |         //             .map(|call| call.into())
124 |         //             .collect::<Vec<_>>(),
125 |         //         block_override: None,
126 |         //     };
127 | 
128 |         //     return provider
129 |         //         .raw_request(
130 |         //             "eth_callMany".into(),
131 |         //             bundle
132 |         //         )
133 |         //         .await
134 |         //         .map_err(alloy::contract::Error::from)?
135 |         //         .into_iter()
136 |         //         .map(|r| {
137 |         //             SC::abi_decode_returns(&r.output, true).map_err(alloy::contract::Error::from)
138 |         //         })
139 |         //         .collect();
140 |         // }
141 |     }
142 | 
143 |     pub fn map<F, R>(self, f: F) -> MapCall<I, F>
144 |     where
145 |         F: FnMut(SC::Return) -> R,
146 |     {
147 |         MapCall { batch: self, f }
148 |     }
149 | }
150 | 
151 | pub struct MapCall<I, F> {
152 |     batch: BatchCall<I>,
153 |     f: F,
154 | }
155 | 
156 | impl<T, P, N, SC, I, F, R> MapCall<I, F>
157 | where
158 |     P: Provider<T, N>,
159 |     SC: SolCall,
160 |     T: Transport + Clone,
161 |     N: Network,
162 |     I: IntoIterator<Item = SolCallBuilder<T, P, SC, N>>,
163 |     F: FnMut(SC::Return) -> R,
164 | {
165 |     pub async fn call(mut self) -> Result<Vec<R>, alloy::contract::Error> {
166 |         Ok(self
167 |             .batch
168 |             .call()
169 |             .await?
170 |             .into_iter()
171 |             .map(|r| (self.f)(r))
172 |             .collect())
173 |     }
174 | }
175 | 
176 | sol! {
177 |     #[sol(rpc)]
178 |     interface Multicall {
179 |         struct Call {
180 |             address target;
181 |             bytes callData;
182 |         }
183 | 
184 |         function aggregate(Call[] memory calls) external returns (uint256 blockNumber, bytes[] returnData);
185 |     }
186 | }
187 | 


--------------------------------------------------------------------------------
/src/traits/float.rs:
--------------------------------------------------------------------------------
 1 | use alloy::primitives::Uint;
 2 | use alloy::primitives::U256;
 3 | use rug::ops::Pow;
 4 | use rug::Float;
 5 | 
 6 | lazy_static::lazy_static! {
 7 |     pub static ref U256_MAX: Float = Float::with_val(100, 2).pow(256);
 8 | }
 9 | 
10 | pub trait IntoFloat {
11 |     fn into_float(&self) -> Float;
12 | }
13 | 
14 | impl<const B: usize, const L: usize> IntoFloat for Uint<B, L> {
15 |     fn into_float(&self) -> Float {
16 |         // safey: U256 is always a valid float
17 |         let parse = Float::parse(self.to_string()).expect("Failed to parse U256 to Float");
18 | 
19 |         Float::with_val(100, parse)
20 |     }
21 | }
22 | 
23 | impl IntoFloat for f64 {
24 |     fn into_float(&self) -> Float {
25 |         Float::with_val(100, *self)
26 |     }
27 | }
28 | 
29 | #[derive(Debug, thiserror::Error)]
30 | pub enum ConversionError {
31 |     #[error("Value is negative")]
32 |     ValueNegative,
33 |     #[error("Value is too large")]
34 |     ValueTooLarge,
35 |     #[error("Value is NaN")]
36 |     NaN,
37 |     #[error("Value is infinite")]
38 |     IsInfinte,
39 | }
40 | 
41 | #[doc(hidden)]
42 | /// We want to impl TryFrom<Float> for U256 but orphan rule
43 | ///
44 | /// Makes the bounds nicer anyway
45 | pub trait IntoU256 {
46 |     /// Converts a Float to a U256
47 |     ///
48 |     /// # Errors:
49 |     /// - If the float is not a valid U256
50 |     fn into_u256(&self) -> Result<U256, ConversionError>;
51 | }
52 | 
53 | impl IntoU256 for Float {
54 |     #[inline]
55 |     fn into_u256(&self) -> Result<U256, ConversionError> {
56 |         if self.is_infinite() {
57 |             return Err(ConversionError::IsInfinte);
58 |         }
59 | 
60 |         if self.is_nan() {
61 |             return Err(ConversionError::NaN);
62 |         }
63 | 
64 |         if self.is_sign_negative() {
65 |             return Err(ConversionError::ValueNegative);
66 |         }
67 | 
68 |         if self > &U256_MAX.clone() {
69 |             return Err(ConversionError::ValueTooLarge);
70 |         }
71 | 
72 |         // rounds floor
73 |         let i = self
74 |             .to_integer()
75 |             .expect("Failed to convert Float to integer even though done our checks, this is a bug")
76 |             .to_string();
77 | 
78 |         Ok(U256::from_str_radix(&i, 10).expect(
79 |             "Failed to convert Float to U256 even though weve done our checks, this is a bug",
80 |         ))
81 |     }
82 | }
83 | 


--------------------------------------------------------------------------------
/src/traits/mod.rs:
--------------------------------------------------------------------------------
 1 | mod basis_points;
 2 | pub use basis_points::ApplyBps;
 3 | 
 4 | mod float;
 5 | pub use float::IntoFloat;
 6 | 
 7 | pub use float::{ConversionError, IntoU256};
 8 | 
 9 | mod batch;
10 | pub use batch::Batch;
11 | 


--------------------------------------------------------------------------------
/src/types/amount.rs:
--------------------------------------------------------------------------------
  1 | use std::ops::Add;
  2 | use std::ops::AddAssign;
  3 | 
  4 | use alloy::primitives::Address;
  5 | use alloy::primitives::U256;
  6 | use rug::ops::Pow;
  7 | use rug::Float;
  8 | 
  9 | use crate::traits::ApplyBps;
 10 | use crate::traits::{ConversionError, IntoFloat, IntoU256};
 11 | use crate::TokenIdx;
 12 | use crate::V3Pool;
 13 | 
 14 | /// A token amount that belongs to a pool, with helpful display and conversion impls
 15 | ///
 16 | /// There are helpers for converting between human readable amounts and scaled amounts
 17 | /// and display and debug implementations return the human readable amount
 18 | ///
 19 | /// # Scaling Assumption
 20 | /// - PartialOrd & PartialEq with Self, [Float] and [U256] assuming theyre scaled
 21 | /// - `Into<T>` returns the scaled amounts
 22 | /// - Add with [U256] and [rug::Float] are assumed to be scaled
 23 | ///
 24 | /// - PartialOrd & PartialEq with native types will scale the the values (u8, u16, u32, f16, f32)
 25 | /// - Add and Sub with native types will scale the native types (u8, u16, u32, f16, f32)
 26 | ///
 27 | /// No guarntees the amount is in range
 28 | pub struct TokenAmount<'a, P> {
 29 |     pool: &'a P,
 30 |     token: TokenIdx,
 31 |     amount: Float,
 32 | }
 33 | 
 34 | impl<'a, P> Clone for TokenAmount<'a, P> {
 35 |     fn clone(&self) -> Self {
 36 |         Self {
 37 |             pool: self.pool,
 38 |             token: self.token,
 39 |             amount: self.amount.clone(),
 40 |         }
 41 |     }
 42 | }
 43 | 
 44 | impl<'a, P: V3Pool> TokenAmount<'a, P> {
 45 |     #[inline]
 46 |     pub fn decimals(&self) -> &u8 {
 47 |         match self.token {
 48 |             TokenIdx::Zero => self.pool.token0_decimals(),
 49 |             TokenIdx::One => self.pool.token1_decimals(),
 50 |         }
 51 |     }
 52 | 
 53 |     #[inline]
 54 |     pub fn token(&self) -> &TokenIdx {
 55 |         &self.token
 56 |     }
 57 | 
 58 |     #[inline]
 59 |     pub fn token_address(&self) -> &Address {
 60 |         match self.token {
 61 |             TokenIdx::Zero => self.pool.token0(),
 62 |             TokenIdx::One => self.pool.token1(),
 63 |         }
 64 |     }
 65 | 
 66 |     #[inline]
 67 |     pub fn as_float(&self) -> &Float {
 68 |         &self.amount
 69 |     }
 70 | 
 71 |     #[inline]
 72 |     pub fn human_readable(&self) -> Float {
 73 |         Self::scale_down(self.pool, self.token, self.amount.clone())
 74 |     }
 75 | 
 76 |     #[inline]
 77 |     /// Create a new TokenAmount with a zero amount
 78 |     pub fn zero(pool: &'a P, token: TokenIdx) -> Self {
 79 |         Self {
 80 |             pool,
 81 |             token,
 82 |             amount: Float::with_val(100, 0),
 83 |         }
 84 |     }
 85 | 
 86 |     #[inline]
 87 |     /// Create a token amount from a human readable amount
 88 |     pub fn from_human_readable(pool: &'a P, token: TokenIdx, amount: f64) -> Self {
 89 |         Self {
 90 |             pool,
 91 |             token,
 92 |             amount: Self::scale_up(pool, token, amount),
 93 |         }
 94 |     }
 95 | 
 96 |     /// Create a token amount from a scaled amount
 97 |     #[inline]
 98 |     pub fn from_scaled(pool: &'a P, token: TokenIdx, amount: Float) -> Self {
 99 |         Self {
100 |             pool,
101 |             token,
102 |             amount,
103 |         }
104 |     }
105 | 
106 |     /// Scale up a human readable amount to a scaled amount
107 |     #[inline]
108 |     fn scale_up(pool: &P, token: TokenIdx, amount: f64) -> Float {
109 |         let exp = match token {
110 |             TokenIdx::Zero => pool.token0_decimals(),
111 |             TokenIdx::One => pool.token1_decimals(),
112 |         };
113 | 
114 |         amount * Float::with_val(100, 10).pow(exp)
115 |     }
116 | 
117 |     #[inline]
118 |     fn scale_down(pool: &P, token: TokenIdx, amount: Float) -> Float {
119 |         let exp = match token {
120 |             TokenIdx::Zero => pool.token0_decimals(),
121 |             TokenIdx::One => pool.token1_decimals(),
122 |         };
123 | 
124 |         amount / Float::with_val(100, 10).pow(exp)
125 |     }
126 | }
127 | 
128 | impl<'a, P> ApplyBps for TokenAmount<'a, P> {
129 |     fn apply_bps_down(&self, bps: u16) -> Self {
130 |         Self {
131 |             amount: self.amount.apply_bps_down(bps),
132 |             token: self.token,
133 |             pool: self.pool,
134 |         }
135 |     }
136 | 
137 |     fn apply_bps_up(&self, bps: u16) -> Self {
138 |         Self {
139 |             amount: self.amount.apply_bps_up(bps),
140 |             token: self.token,
141 |             pool: self.pool,
142 |         }
143 |     }
144 | }
145 | 
146 | impl<'a, P> IntoU256 for TokenAmount<'a, P> {
147 |     fn into_u256(&self) -> Result<U256, ConversionError> {
148 |         self.amount.into_u256()
149 |     }
150 | }
151 | 
152 | impl<'a, P> From<TokenAmount<'a, P>> for Float {
153 |     fn from(amount: TokenAmount<'a, P>) -> Self {
154 |         amount.amount
155 |     }
156 | }
157 | 
158 | impl<'a, P> Add<Float> for TokenAmount<'a, P> {
159 |     type Output = Self;
160 | 
161 |     fn add(self, rhs: Float) -> Self::Output {
162 |         Self {
163 |             amount: self.amount + rhs,
164 |             token: self.token,
165 |             pool: self.pool,
166 |         }
167 |     }
168 | }
169 | 
170 | impl<'a, P> Add<TokenAmount<'a, P>> for Float {
171 |     type Output = TokenAmount<'a, P>;
172 | 
173 |     fn add(self, rhs: TokenAmount<'a, P>) -> Self::Output {
174 |         rhs + self
175 |     }
176 | }
177 | 
178 | impl<'a, P> Add<U256> for TokenAmount<'a, P> {
179 |     type Output = Self;
180 | 
181 |     fn add(self, rhs: U256) -> Self::Output {
182 |         Self {
183 |             amount: self.amount + rhs.into_float(),
184 |             token: self.token,
185 |             pool: self.pool,
186 |         }
187 |     }
188 | }
189 | 
190 | impl<'a, P> Add<TokenAmount<'a, P>> for U256 {
191 |     type Output = TokenAmount<'a, P>;
192 | 
193 |     fn add(self, rhs: TokenAmount<'a, P>) -> Self::Output {
194 |         TokenAmount {
195 |             amount: self.into_float() + rhs.amount,
196 |             token: rhs.token,
197 |             pool: rhs.pool,
198 |         }
199 |     }
200 | }
201 | 
202 | impl<'a, P> AddAssign<Float> for TokenAmount<'a, P> {
203 |     fn add_assign(&mut self, rhs: Float) {
204 |         self.amount += rhs;
205 |     }
206 | }
207 | 
208 | impl<'a, P> AddAssign<&Float> for TokenAmount<'a, P> {
209 |     fn add_assign(&mut self, rhs: &Float) {
210 |         self.amount += rhs;
211 |     }
212 | }
213 | 
214 | impl<'a, P> AddAssign<U256> for TokenAmount<'a, P> {
215 |     fn add_assign(&mut self, rhs: U256) {
216 |         self.amount += rhs.into_float();
217 |     }
218 | }
219 | 
220 | // Float and U256 implementations
221 | 
222 | impl<'a, P> PartialEq<Float> for TokenAmount<'a, P> {
223 |     fn eq(&self, other: &Float) -> bool {
224 |         self.amount.eq(other)
225 |     }
226 | }
227 | 
228 | impl<'a, P> PartialEq<TokenAmount<'a, P>> for Float {
229 |     fn eq(&self, other: &TokenAmount<'a, P>) -> bool {
230 |         self.eq(&other.amount)
231 |     }
232 | }
233 | 
234 | impl<'a, P> PartialOrd<Float> for TokenAmount<'a, P> {
235 |     fn partial_cmp(&self, other: &Float) -> Option<std::cmp::Ordering> {
236 |         self.amount.partial_cmp(other)
237 |     }
238 | }
239 | 
240 | impl<'a, P> PartialOrd<TokenAmount<'a, P>> for Float {
241 |     fn partial_cmp(&self, other: &TokenAmount<'a, P>) -> Option<std::cmp::Ordering> {
242 |         self.partial_cmp(&other.amount)
243 |     }
244 | }
245 | 
246 | impl<'a, P> PartialEq<U256> for TokenAmount<'a, P> {
247 |     fn eq(&self, other: &U256) -> bool {
248 |         self.amount.eq(&other.into_float())
249 |     }
250 | }
251 | 
252 | impl<'a, P> PartialEq<TokenAmount<'a, P>> for U256 {
253 |     fn eq(&self, other: &TokenAmount<'a, P>) -> bool {
254 |         self.into_float().eq(&other.amount)
255 |     }
256 | }
257 | 
258 | impl<'a, P> PartialOrd<U256> for TokenAmount<'a, P> {
259 |     fn partial_cmp(&self, other: &U256) -> Option<std::cmp::Ordering> {
260 |         self.amount.partial_cmp(&other.into_float())
261 |     }
262 | }
263 | 
264 | impl<'a, P> PartialOrd<TokenAmount<'a, P>> for U256 {
265 |     fn partial_cmp(&self, other: &TokenAmount<'a, P>) -> Option<std::cmp::Ordering> {
266 |         self.into_float().partial_cmp(&other.amount)
267 |     }
268 | }
269 | 
270 | pub trait IntoTokenAmount<'a, P: V3Pool> {
271 |     fn into_token_amount(self, pool: &'a P, token: TokenIdx) -> TokenAmount<'a, P>;
272 | }
273 | 
274 | impl<'a, P: V3Pool> IntoTokenAmount<'a, P> for TokenAmount<'a, P> {
275 |     #[inline]
276 |     fn into_token_amount(self, _pool: &'a P, _token: TokenIdx) -> TokenAmount<'a, P> {
277 |         self
278 |     }
279 | }
280 | 
281 | impl<'a, P: V3Pool> IntoTokenAmount<'a, P> for Float {
282 |     fn into_token_amount(self, pool: &'a P, token: TokenIdx) -> TokenAmount<'a, P> {
283 |         TokenAmount::from_scaled(pool, token, self)
284 |     }
285 | }
286 | 
287 | impl<'a, P: V3Pool> IntoTokenAmount<'a, P> for U256 {
288 |     fn into_token_amount(self, pool: &'a P, token: TokenIdx) -> TokenAmount<'a, P> {
289 |         TokenAmount::from_scaled(pool, token, self.into_float())
290 |     }
291 | }
292 | 
293 | // Implementations for native types that scales them during ops
294 | impl_token_amount_cmp_eq_native!(TokenAmount);
295 | 
296 | impl<'a, P: V3Pool> std::fmt::Display for TokenAmount<'a, P> {
297 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
298 |         write!(f, "{}", self.human_readable())
299 |     }
300 | }
301 | 
302 | impl<'a, P: V3Pool> std::fmt::Debug for TokenAmount<'a, P> {
303 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
304 |         let token = match self.token {
305 |             TokenIdx::Zero => self.pool.token0(),
306 |             TokenIdx::One => self.pool.token1(),
307 |         };
308 | 
309 |         f.debug_struct("TokenAmount")
310 |             .field("raw", self.as_float())
311 |             .field("human_readable", &self.human_readable())
312 |             .field("token", token)
313 |             .finish()
314 |     }
315 | }
316 | 
317 | #[cfg(test)]
318 | mod test {
319 |     use super::TokenAmount;
320 |     use crate::TokenIdx;
321 |     use alloy::primitives::Address;
322 |     use alloy::primitives::U256;
323 |     use rug::ops::Pow;
324 |     use rug::Float;
325 | 
326 |     use crate::types::tests::MockPool;
327 | 
328 |     #[test]
329 |     fn test_eq_float() {
330 |         let pool = MockPool {
331 |             token0: Address::ZERO,
332 |             token1: Address::ZERO,
333 |             token0_decimals: 18,
334 |             token1_decimals: 18,
335 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
336 |         };
337 | 
338 |         let amount = TokenAmount::from_scaled(&pool, TokenIdx::Zero, Float::with_val(100, 100));
339 |         let amount2 = Float::with_val(100, 100);
340 | 
341 |         assert_eq!(amount, amount2);
342 |     }
343 | 
344 |     #[test]
345 |     fn test_eq_u256() {
346 |         let pool = MockPool {
347 |             token0: Address::ZERO,
348 |             token1: Address::ZERO,
349 |             token0_decimals: 18,
350 |             token1_decimals: 18,
351 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
352 |         };
353 | 
354 |         let amount = TokenAmount::from_scaled(&pool, TokenIdx::Zero, Float::with_val(100, 100));
355 |         let amount2 = U256::from(100);
356 | 
357 |         assert_eq!(amount, amount2);
358 |     }
359 | 
360 |     #[test]
361 |     fn test_cmp_float() {
362 |         let pool = MockPool {
363 |             token0: Address::ZERO,
364 |             token1: Address::ZERO,
365 |             token0_decimals: 18,
366 |             token1_decimals: 18,
367 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
368 |         };
369 | 
370 |         let amount = TokenAmount::from_scaled(&pool, TokenIdx::Zero, Float::with_val(100, 100));
371 |         let amount2 = Float::with_val(100, 99);
372 | 
373 |         assert!(amount > amount2);
374 |         assert!(amount2 < amount);
375 |     }
376 | 
377 |     #[test]
378 |     fn test_cmp_u256() {
379 |         let pool = MockPool {
380 |             token0: Address::ZERO,
381 |             token1: Address::ZERO,
382 |             token0_decimals: 18,
383 |             token1_decimals: 18,
384 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
385 |         };
386 | 
387 |         let amount = TokenAmount::from_scaled(&pool, TokenIdx::Zero, Float::with_val(100, 100));
388 |         let amount2 = U256::from(99);
389 | 
390 |         assert!(amount > amount2);
391 |         assert!(amount2 < amount);
392 |     }
393 | 
394 |     #[test]
395 |     fn test_eq_native_u8() {
396 |         let pool = MockPool {
397 |             token0: Address::ZERO,
398 |             token1: Address::ZERO,
399 |             token0_decimals: 18,
400 |             token1_decimals: 18,
401 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
402 |         };
403 | 
404 |         let amount = 100_u8;
405 |         let token_amount = TokenAmount::from_human_readable(&pool, TokenIdx::Zero, amount.into());
406 | 
407 |         assert_eq!(amount, token_amount);
408 |     }
409 | 
410 |     #[test]
411 |     fn test_eq_native_f64() {
412 |         let pool = MockPool {
413 |             token0: Address::ZERO,
414 |             token1: Address::ZERO,
415 |             token0_decimals: 18,
416 |             token1_decimals: 18,
417 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
418 |         };
419 | 
420 |         let amount = 100.0;
421 |         let token_amount = TokenAmount::from_human_readable(&pool, TokenIdx::Zero, amount);
422 | 
423 |         assert_eq!(amount, token_amount);
424 |     }
425 | 
426 |     #[test]
427 |     fn test_returns_scaled_version() {
428 |         let pool = MockPool {
429 |             token0: Address::ZERO,
430 |             token1: Address::ZERO,
431 |             token0_decimals: 18,
432 |             token1_decimals: 18,
433 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
434 |         };
435 | 
436 |         let scalar = Float::with_val(100, 10).pow(18);
437 | 
438 |         let amount = TokenAmount::from_human_readable(&pool, TokenIdx::Zero, 100.0);
439 |         let scaled = amount.as_float();
440 | 
441 |         assert_eq!(*scaled, Float::with_val(100, 100) * scalar);
442 |     }
443 | 
444 |     #[test]
445 |     fn test_add_float() {
446 |         let pool = MockPool {
447 |             token0: Address::ZERO,
448 |             token1: Address::ZERO,
449 |             token0_decimals: 18,
450 |             token1_decimals: 18,
451 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
452 |         };
453 | 
454 |         let amount = TokenAmount::from_scaled(&pool, TokenIdx::Zero, Float::with_val(100, 100));
455 |         let result = amount + Float::with_val(100, 100);
456 | 
457 |         assert_eq!(result, Float::with_val(10, 200));
458 |     }
459 | }
460 | 


--------------------------------------------------------------------------------
/src/types/deltas.rs:
--------------------------------------------------------------------------------
 1 | use std::fmt::Formatter;
 2 | 
 3 | use rug::Float;
 4 | 
 5 | use crate::math::swap::{token0_delta, token1_delta};
 6 | use crate::math::SqrtPrice;
 7 | use crate::types::amount::TokenAmount;
 8 | use crate::V3Pool;
 9 | 
10 | /// The change change in token of a pool because of some operation
11 | #[derive(Clone)]
12 | pub struct Deltas<'a, P: V3Pool> {
13 |     pool: &'a P,
14 |     pub token0_amount: TokenAmount<'a, P>,
15 |     pub token1_amount: TokenAmount<'a, P>,
16 | }
17 | 
18 | impl<'a, P: V3Pool> std::fmt::Debug for Deltas<'a, P> {
19 |     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
20 |         f.debug_struct("Deltas")
21 |             .field("token0_amount", &self.token0_amount)
22 |             .field("token1_amount", &self.token1_amount)
23 |             .finish()
24 |     }
25 | }
26 | 
27 | impl<'a, P: V3Pool> Deltas<'a, P> {
28 |     pub fn token0_amount(&self) -> &TokenAmount<P> {
29 |         &self.token0_amount
30 |     }
31 | 
32 |     pub fn token1_amount(&self) -> &TokenAmount<P> {
33 |         &self.token1_amount
34 |     }
35 | 
36 |     pub fn new(pool: &'a P) -> Self {
37 |         Self {
38 |             pool,
39 |             token0_amount: TokenAmount::zero(pool, super::Token::Zero),
40 |             token1_amount: TokenAmount::zero(pool, super::Token::One),
41 |         }
42 |     }
43 | 
44 |     pub fn update(&mut self, liquidity: Float, sqrt_price: SqrtPrice, target_price: SqrtPrice) {
45 |         tracing::trace!(
46 |             "updating deltas with liquidity: {}, sqrt_price: {}, target_price: {}",
47 |             liquidity,
48 |             sqrt_price,
49 |             target_price
50 |         );
51 | 
52 |         self.token0_amount +=
53 |             token0_delta(sqrt_price.clone(), target_price.clone(), liquidity.clone());
54 | 
55 |         self.token1_amount += token1_delta(sqrt_price, target_price, liquidity);
56 |     }
57 | 
58 |     /// Returns the additional amount of tokens you would need to add to your swap to cover the fee
59 |     ///
60 |     /// Returns None if any amount is zero
61 |     pub fn fee_amount(&self) -> TokenAmount<P> {
62 |         let token1_amount = self.token1_amount.as_float();
63 |         let token0_amount = self.token0_amount.as_float();
64 | 
65 |         if token0_amount.is_zero() || token1_amount.is_zero() {
66 |             tracing::warn!("got a zero token trade");
67 |             return TokenAmount::zero(self.pool, super::Token::Zero);
68 |         }
69 | 
70 |         let fee = Float::with_val(100, self.pool.fee().to::<u32>());
71 |         let fee = fee / 1e6;
72 |         let decay = 1 - fee;
73 | 
74 |         // The positive amount is the amount coming into the pool
75 |         match (
76 |             token0_amount.is_sign_negative(),
77 |             token1_amount.is_sign_negative(),
78 |         ) {
79 |             (true, false) => TokenAmount::from_scaled(
80 |                 self.pool,
81 |                 super::Token::One,
82 |                 token1_amount.clone() / decay,
83 |             ),
84 |             (false, true) => TokenAmount::from_scaled(
85 |                 self.pool,
86 |                 super::Token::Zero,
87 |                 token0_amount.clone() / decay,
88 |             ),
89 |             (_, _) => unreachable!("Got two non zero same sign deltas, this is a bug"),
90 |         }
91 |     }
92 | }
93 | 


--------------------------------------------------------------------------------
/src/types/mod.rs:
--------------------------------------------------------------------------------
  1 | use alloy::primitives::{uint, Uint};
  2 | 
  3 | mod amount;
  4 | mod deltas;
  5 | mod price;
  6 | 
  7 | pub use amount::*;
  8 | pub use deltas::*;
  9 | pub use price::*;
 10 | 
 11 | /// The index of the token in the pool
 12 | #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 13 | pub enum Token {
 14 |     Zero,
 15 |     One,
 16 | }
 17 | 
 18 | /// The fee tier for the pool
 19 | #[derive(Debug, Clone, Copy)]
 20 | pub enum FeeTier {
 21 |     /// Added after by governance = 1 bps
 22 |     Lowest,
 23 |     Min,
 24 |     Mid,
 25 |     Max,
 26 | }
 27 | 
 28 | impl FeeTier {
 29 |     /// Big endian representation of the fee tier
 30 |     /// used for encoding paths
 31 |     pub const fn as_u24_bytes(&self) -> [u8; 3] {
 32 |         self.as_scaled_bp().to_be_bytes()
 33 |     }
 34 | 
 35 |     pub const fn as_spacing(&self) -> TickSpacing {
 36 |         match self {
 37 |             FeeTier::Lowest => TickSpacing::Lowest,
 38 |             FeeTier::Min => TickSpacing::Min,
 39 |             FeeTier::Mid => TickSpacing::Mid,
 40 |             FeeTier::Max => TickSpacing::Max,
 41 |         }
 42 |     }
 43 | 
 44 |     pub const fn as_bp(&self) -> u16 {
 45 |         match self {
 46 |             FeeTier::Lowest => 1,
 47 |             FeeTier::Min => 5,
 48 |             FeeTier::Mid => 30,
 49 |             FeeTier::Max => 100,
 50 |         }
 51 |     }
 52 | 
 53 |     pub const fn as_scaled_bp(&self) -> Uint<24, 1> {
 54 |         match self {
 55 |             FeeTier::Lowest => uint!(100_U24),
 56 |             FeeTier::Min => uint!(500_U24),
 57 |             FeeTier::Mid => uint!(3000_U24),
 58 |             FeeTier::Max => uint!(10000_U24),
 59 |         }
 60 |     }
 61 | }
 62 | 
 63 | #[derive(Debug, Clone, Copy)]
 64 | pub enum TickSpacing {
 65 |     /// Added after by governance = 1 bps
 66 |     Lowest = 1,
 67 |     Min = 10,
 68 |     Mid = 60,
 69 |     Max = 200,
 70 | }
 71 | 
 72 | impl TickSpacing {
 73 |     pub const fn as_fee(tick_spacing: TickSpacing) -> FeeTier {
 74 |         match tick_spacing {
 75 |             TickSpacing::Lowest => FeeTier::Lowest,
 76 |             TickSpacing::Min => FeeTier::Min,
 77 |             TickSpacing::Mid => FeeTier::Mid,
 78 |             TickSpacing::Max => FeeTier::Max,
 79 |         }
 80 |     }
 81 | }
 82 | 
 83 | #[cfg(test)]
 84 | mod tests {
 85 |     use crate::{math::Tick, PoolResult};
 86 |     use alloy::primitives::Address;
 87 |     use rug::Float;
 88 |     use std::convert::Infallible;
 89 | 
 90 |     pub(crate) struct MockPool {
 91 |         pub token0: Address,
 92 |         pub token1: Address,
 93 |         pub token0_decimals: u8,
 94 |         pub token1_decimals: u8,
 95 |         pub fee: alloy::primitives::Uint<24, 1>,
 96 |     }
 97 | 
 98 |     #[async_trait::async_trait]
 99 |     impl crate::V3Pool for MockPool {
100 |         type BackendError = Infallible;
101 | 
102 |         fn token0(&self) -> &Address {
103 |             &self.token0
104 |         }
105 | 
106 |         fn token0_decimals(&self) -> &u8 {
107 |             &self.token0_decimals
108 |         }
109 | 
110 |         fn token1(&self) -> &Address {
111 |             &self.token1
112 |         }
113 | 
114 |         fn token1_decimals(&self) -> &u8 {
115 |             &self.token1_decimals
116 |         }
117 | 
118 |         fn fee(&self) -> alloy::primitives::Uint<24, 1> {
119 |             self.fee
120 |         }
121 | 
122 |         fn tick_spacing(&self) -> alloy::primitives::Signed<24, 1> {
123 |             alloy::primitives::Signed::<24, 1>::ZERO
124 |         }
125 | 
126 |         fn address(&self) -> Address {
127 |             Address::ZERO
128 |         }
129 | 
130 |         async fn current_liquidity(&self) -> PoolResult<Float, Self::BackendError> {
131 |             Ok(Float::with_val(100, 100))
132 |         }
133 | 
134 |         async fn sqrt_price_x96(&self) -> PoolResult<Float, Self::BackendError> {
135 |             Ok(Float::with_val(100, 100))
136 |         }
137 | 
138 |         async fn tick(&self, _tick: Tick) -> PoolResult<Float, Self::BackendError> {
139 |             Ok(Float::with_val(100, 100))
140 |         }
141 | 
142 |         async fn tick_range(
143 |             &self,
144 |             _starting: Tick,
145 |             _ending: Tick,
146 |         ) -> PoolResult<Vec<i128>, Self::BackendError> {
147 |             Ok(vec![])
148 |         }
149 |     }
150 | }
151 | 


--------------------------------------------------------------------------------
/src/types/price.rs:
--------------------------------------------------------------------------------
  1 | use rug::ops::Pow;
  2 | use rug::Float;
  3 | 
  4 | use super::Token;
  5 | use crate::math::BoundsError;
  6 | use crate::math::Price;
  7 | use crate::V3Pool;
  8 | use alloy::primitives::U256;
  9 | 
 10 | /// Display and Debug implementations return the human readable price in the form the user selected at creation
 11 | /// and there are helpers for converting between human readable prices and scaled prices
 12 | ///
 13 | /// ## Comparions
 14 | /// A pool price should be [Self::human_readble] to remove the decimals and this will be the human readable price
 15 | ///
 16 | /// ## Conversions
 17 | /// - all Into<T> implementations will return the scaled price accounting for the internal decimals of the pool
 18 | ///     - if you want the human readable price use [PoolPrice::human_readble]
 19 | pub struct PoolPrice<'a, P> {
 20 |     /// The token you want the price to be formatted as
 21 |     numeraire: Token,
 22 | 
 23 |     /// the price of token0 in terms of token1, accounting for the decimals of the pool
 24 |     price: Price,
 25 | 
 26 |     /// the pool that this price is for
 27 |     pool: &'a P,
 28 | }
 29 | 
 30 | impl<'a, P> Clone for PoolPrice<'a, P> {
 31 |     fn clone(&self) -> Self {
 32 |         Self {
 33 |             price: self.price.clone(),
 34 |             pool: self.pool,
 35 |             numeraire: self.numeraire,
 36 |         }
 37 |     }
 38 | }
 39 | 
 40 | impl<'a, P: V3Pool> PoolPrice<'a, P> {
 41 |     /// Create a new pool price from this Price wrapper.
 42 |     ///
 43 |     /// # Arguments
 44 |     /// The price of token0 in terms of token1, and the denomination to format the price in
 45 |     pub(crate) fn from_price(pool: &'a P, price: Price, numeraire: Token) -> Self {
 46 |         Self {
 47 |             price,
 48 |             pool,
 49 |             numeraire,
 50 |         }
 51 |     }
 52 | 
 53 |     /// The quote token (numeraire) of this price
 54 |     pub fn quote(&self) -> &Token {
 55 |         &self.numeraire
 56 |     }
 57 | 
 58 |     /// Converts a (normalized) human readable price into a pool price
 59 |     pub fn from_human_readable(
 60 |         pool: &'a P,
 61 |         price: Float,
 62 |         numeraire: Token,
 63 |     ) -> Result<Self, BoundsError> {
 64 |         match numeraire {
 65 |             Token::One => Ok(Self {
 66 |                 price: Price::new(scale_up(pool, price))?,
 67 |                 pool,
 68 |                 numeraire,
 69 |             }),
 70 |             Token::Zero => Ok(Self {
 71 |                 price: Price::new(scale_up(pool, price.recip()))?,
 72 |                 pool,
 73 |                 numeraire,
 74 |             }),
 75 |         }
 76 |     }
 77 | 
 78 |     /// Remove scalar decimals from the price
 79 |     ///
 80 |     /// In other words this is the human readable price
 81 |     pub fn human_readable(&self) -> Float {
 82 |         match self.numeraire {
 83 |             Token::One => self.scale_down(),
 84 |             Token::Zero => self.scale_down().recip(),
 85 |         }
 86 |     }
 87 | }
 88 | 
 89 | impl<'a, P: V3Pool> PoolPrice<'a, P> {
 90 |     /// Probaly only useful for formatting
 91 |     ///
 92 |     /// Remove the internal decimals from the price
 93 |     fn scale_down(&self) -> Float {
 94 |         scale_down(self.pool, self.price.clone().into())
 95 |     }
 96 | }
 97 | 
 98 | fn scale_up<P: V3Pool>(pool: &P, val: Float) -> Float {
 99 |     let exp = *pool.token1_decimals() as i16 - *pool.token0_decimals() as i16;
100 | 
101 |     val * Float::with_val(100, 10).pow(exp)
102 | }
103 | 
104 | fn scale_down<P: V3Pool>(pool: &P, val: Float) -> Float {
105 |     let exp = *pool.token0_decimals() as i16 - *pool.token1_decimals() as i16;
106 | 
107 |     val * Float::with_val(100, 10).pow(exp)
108 | }
109 | 
110 | impl<'a, P> From<PoolPrice<'a, P>> for Price {
111 |     fn from(price: PoolPrice<'a, P>) -> Self {
112 |         price.price
113 |     }
114 | }
115 | 
116 | impl<'a, P> From<PoolPrice<'a, P>> for Float {
117 |     fn from(price: PoolPrice<'a, P>) -> Self {
118 |         price.price.into()
119 |     }
120 | }
121 | 
122 | impl<'a, P> From<PoolPrice<'a, P>> for U256 {
123 |     fn from(price: PoolPrice<'a, P>) -> Self {
124 |         price.price.into()
125 |     }
126 | }
127 | 
128 | impl<'a, P: V3Pool> std::fmt::Display for PoolPrice<'a, P> {
129 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
130 |         write!(f, "{}", self.human_readable())
131 |     }
132 | }
133 | 
134 | impl<'a, P: V3Pool> std::fmt::Debug for PoolPrice<'a, P> {
135 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
136 |         f.debug_struct("PoolPrice")
137 |             .field("raw", &self.price)
138 |             .field("human_readable", &self.human_readable())
139 |             .field("token0", &self.pool.token0())
140 |             .field("token1", &self.pool.token1())
141 |             .field("token0_decimals", &self.pool.token0_decimals())
142 |             .field("token1_decimals", &self.pool.token1_decimals())
143 |             .field("numeraire", &self.numeraire)
144 |             .finish()
145 |     }
146 | }
147 | 
148 | #[cfg(test)]
149 | mod test {
150 |     use crate::types::tests::MockPool;
151 |     use rug::ops::Pow;
152 | 
153 |     #[test]
154 |     fn test_price_scaled_as_expected() {
155 |         let pool = MockPool {
156 |             token0: Default::default(),
157 |             token1: Default::default(),
158 |             token0_decimals: 4,
159 |             token1_decimals: 10,
160 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
161 |         };
162 | 
163 |         let price = rug::Float::with_val(100, 100);
164 |         let pool_price = crate::types::price::PoolPrice::from_human_readable(
165 |             &pool,
166 |             price.clone(),
167 |             crate::types::Token::One,
168 |         )
169 |         .unwrap();
170 | 
171 |         println!("{:?}", rug::Float::from(pool_price.clone()).to_string());
172 |         assert_eq!(
173 |             rug::Float::from(pool_price),
174 |             price * rug::Float::with_val(100, 10).pow(6)
175 |         );
176 |     }
177 | 
178 |     #[test]
179 |     fn test_price_round_trip() {
180 |         let pool = MockPool {
181 |             token0: Default::default(),
182 |             token1: Default::default(),
183 |             token0_decimals: 5,
184 |             token1_decimals: 10,
185 |             fee: alloy::primitives::Uint::<24, 1>::from(3000),
186 |         };
187 | 
188 |         let price = rug::Float::with_val(100, 100);
189 |         let pool_price = crate::types::price::PoolPrice::from_human_readable(
190 |             &pool,
191 |             price.clone(),
192 |             crate::types::Token::One,
193 |         )
194 |         .unwrap();
195 | 
196 |         assert_eq!(pool_price.human_readable(), price);
197 |     }
198 | }
199 | 


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