solana-account 5.0.0

Solana Account type
Documentation 
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//! bincode-based serialization helpers for [`Account`] and [`AccountSharedData`].

use {
    crate::{Account, AccountSharedData, ReadableAccount, WritableAccount},
    solana_clock::Epoch,
    solana_pubkey::Pubkey,
    std::{cell::RefCell, sync::Arc},
};

fn shared_deserialize_data<T: serde::de::DeserializeOwned, U: ReadableAccount>(
    account: &U,
) -> Result<T, bincode::Error> {
    bincode::deserialize(account.data())
}

fn shared_serialize_data<T: serde::Serialize, U: WritableAccount>(
    account: &mut U,
    state: &T,
) -> Result<(), bincode::Error> {
    if bincode::serialized_size(state)? > account.data().len() as u64 {
        return Err(Box::new(bincode::ErrorKind::SizeLimit));
    }
    bincode::serialize_into(account.data_as_mut_slice(), state)
}

impl Account {
    pub fn new_data<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        owner: &Pubkey,
    ) -> Result<Self, bincode::Error> {
        let data = bincode::serialize(state)?;
        Ok(Account {
            lamports,
            data,
            owner: *owner,
            executable: false,
            rent_epoch: Epoch::default(),
        })
    }
    pub fn new_ref_data<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        owner: &Pubkey,
    ) -> Result<RefCell<Self>, bincode::Error> {
        Account::new_data(lamports, state, owner).map(RefCell::new)
    }
    pub fn new_data_with_space<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        space: usize,
        owner: &Pubkey,
    ) -> Result<Self, bincode::Error> {
        let mut account = Account::new(lamports, space, owner);
        shared_serialize_data(&mut account, state)?;
        Ok(account)
    }
    pub fn new_ref_data_with_space<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        space: usize,
        owner: &Pubkey,
    ) -> Result<RefCell<Self>, bincode::Error> {
        Account::new_data_with_space(lamports, state, space, owner).map(RefCell::new)
    }
    pub fn deserialize_data<T: serde::de::DeserializeOwned>(&self) -> Result<T, bincode::Error> {
        shared_deserialize_data(self)
    }
    pub fn serialize_data<T: serde::Serialize>(&mut self, state: &T) -> Result<(), bincode::Error> {
        shared_serialize_data(self, state)
    }
}

impl AccountSharedData {
    pub fn new_data<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        owner: &Pubkey,
    ) -> Result<Self, bincode::Error> {
        let data = bincode::serialize(state)?;
        Ok(Self::create_from_existing_shared_data(
            lamports,
            Arc::new(data),
            *owner,
            false,
            Epoch::default(),
        ))
    }
    pub fn new_ref_data<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        owner: &Pubkey,
    ) -> Result<RefCell<Self>, bincode::Error> {
        AccountSharedData::new_data(lamports, state, owner).map(RefCell::new)
    }
    pub fn new_data_with_space<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        space: usize,
        owner: &Pubkey,
    ) -> Result<Self, bincode::Error> {
        let mut account = AccountSharedData::new(lamports, space, owner);
        shared_serialize_data(&mut account, state)?;
        Ok(account)
    }
    pub fn new_ref_data_with_space<T: serde::Serialize>(
        lamports: u64,
        state: &T,
        space: usize,
        owner: &Pubkey,
    ) -> Result<RefCell<Self>, bincode::Error> {
        AccountSharedData::new_data_with_space(lamports, state, space, owner).map(RefCell::new)
    }
    pub fn deserialize_data<T: serde::de::DeserializeOwned>(&self) -> Result<T, bincode::Error> {
        shared_deserialize_data(self)
    }
    pub fn serialize_data<T: serde::Serialize>(&mut self, state: &T) -> Result<(), bincode::Error> {
        shared_serialize_data(self, state)
    }
}