clmm-common 0.1.39

Blockchain, Clmm for Solana
Documentation 
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use std::vec;

use crate::contract::state::Clmmpool;
use crate::error::ErrorCode;
use crate::math::{FullMath, get_amount_from_liquidity};
use borsh::BorshDeserialize;
use solana_client::rpc_client::RpcClient;
use solana_program::pubkey::Pubkey;
use tabled::Tabled;

#[derive(Default, Debug, BorshDeserialize, Tabled, Copy, Clone)]
pub struct Position {
    pub clmmpool: Pubkey,
    pub position_nft_mint: Pubkey,
    pub liquidity: u128,
    pub tick_lower_index: i32,
    pub tick_upper_index: i32,

    // Q64.64
    pub fee_growth_inside_a: u128,
    pub fee_owed_a: u64,

    // Q64.64
    pub fee_growth_inside_b: u128,
    pub fee_owed_b: u64,

    pub reward_infos: PositionRewarders,
}

#[derive(Copy, Clone, BorshDeserialize, Default, Debug, PartialEq)]
pub struct PositionReward {
    // Q64.64
    pub growth_inside: u128,
    pub amount_owed: u64,
}

impl PositionReward {
    pub const LEN: usize = 8 + 16;
}

#[derive(Copy, Clone, BorshDeserialize, Default, Debug, PartialEq)]
pub struct PositionRewarders(pub [PositionReward; 3]);

impl std::fmt::Display for PositionRewarders {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let mut res: Vec<String> = vec![];
        for (i, e) in self.0.iter().enumerate() {
            res.push(format!(
                "{}. growth_index: {}, amount_owned:{}",
                i, e.growth_inside, e.amount_owed
            ));
        }
        let res_str = res.join("\n");
        write!(f, "{}", res_str)
    }
}

impl Position {
    pub const LEN: usize =
        32 + 32 + 16 + 4 + 4 + 16 + 8 + 16 + 8 + Clmmpool::REWARD_NUM * PositionReward::LEN;

    pub fn get_info(rpc_client: &RpcClient, pubkey: &Pubkey) -> Self {
        let data_slice = &rpc_client.get_account_data(pubkey).unwrap()[8..];
        Position::try_from_slice(data_slice).unwrap()
    }

    pub fn update_fee(
        &mut self,
        fee_growth_inside_a: u128,
        fee_growth_inside_b: u128,
    ) -> () {
        let growth_delta_a = fee_growth_inside_a.wrapping_sub(self.fee_growth_inside_a);
        let fee_delta_a = self.liquidity.mul_shift_right(growth_delta_a, 64);
        let growth_delta_b = fee_growth_inside_b.wrapping_sub(self.fee_growth_inside_b);
        let fee_delta_b = self.liquidity.mul_shift_right(growth_delta_b, 64);

        self.fee_owed_a = self.fee_owed_a.checked_add(fee_delta_a as u64).unwrap();
        self.fee_owed_b = self.fee_owed_b.checked_add(fee_delta_b as u64).unwrap();

        self.fee_growth_inside_a = fee_growth_inside_a;
        self.fee_growth_inside_b = fee_growth_inside_b;
    }

    pub fn update_rewarder(
        &mut self,
        rewards_growths_inside: &[u128; Clmmpool::REWARD_NUM],
    ) -> () {
        for i in 0..Clmmpool::REWARD_NUM {
            let growth_delta =
                rewards_growths_inside[i].wrapping_sub(self.reward_infos.0.as_slice()[i].growth_inside);
            let amount_owed_delta = self.liquidity.mul_shift_right(growth_delta, 64);

            self.reward_infos.0.as_mut_slice()[i].growth_inside = rewards_growths_inside[i];
            self.reward_infos.0.as_mut_slice()[i].amount_owed = self.reward_infos.0.as_mut_slice()[i]
                .amount_owed
                .checked_add(amount_owed_delta as u64)
                .unwrap();
        }
    }

    pub fn get_ui_info(self, position: Pubkey) -> PositionUiList {
        PositionUiList {
            clmmpool: self.clmmpool,
            position,
            position_nft_mint: self.position_nft_mint,
            liquidity: self.liquidity,
            tick_lower_index: self.tick_lower_index,
            tick_upper_index: self.tick_upper_index,
        }
    }

    pub fn get_amount(
        self,
        current_tick_index: i32,
        current_sqrt_price: u128,
    ) -> Result<(u64, u64), ErrorCode> {
        get_amount_from_liquidity(
            self.tick_lower_index,
            self.tick_upper_index,
            self.liquidity,
            current_tick_index,
            current_sqrt_price,
        )
    }
}

#[derive(Tabled)]
pub struct PositionUiList {
    /// clmmpool
    pub clmmpool: Pubkey,
    /// position
    pub position: Pubkey,
    pub position_nft_mint: Pubkey,
    pub liquidity: u128,
    pub tick_lower_index: i32,
    pub tick_upper_index: i32,
}