91 lines
2.7 KiB
Rust
91 lines
2.7 KiB
Rust
use crate::{
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AccountDeserialize, AccountSerialize, Accounts, ToAccountInfo, ToAccountInfos, ToAccountMetas,
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};
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use solana_sdk::account_info::AccountInfo;
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use solana_sdk::instruction::AccountMeta;
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use solana_sdk::program_error::ProgramError;
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use solana_sdk::pubkey::Pubkey;
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use std::ops::{Deref, DerefMut};
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/// Container for any account *not* owned by the current program.
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#[derive(Clone)]
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pub struct CpiAccount<'a, T: AccountSerialize + AccountDeserialize + Clone> {
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info: AccountInfo<'a>,
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account: T,
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}
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impl<'a, T: AccountSerialize + AccountDeserialize + Clone> CpiAccount<'a, T> {
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pub fn new(info: AccountInfo<'a>, account: T) -> CpiAccount<'a, T> {
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Self { info, account }
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}
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/// Deserializes the given `info` into a `CpiAccount`.
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pub fn try_from(info: &AccountInfo<'a>) -> Result<CpiAccount<'a, T>, ProgramError> {
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let mut data: &[u8] = &info.try_borrow_data()?;
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Ok(CpiAccount::new(
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info.clone(),
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T::try_deserialize(&mut data)?,
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))
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}
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}
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impl<'info, T> Accounts<'info> for CpiAccount<'info, T>
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where
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T: AccountSerialize + AccountDeserialize + Clone,
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{
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fn try_accounts(
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_program_id: &Pubkey,
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accounts: &mut &[AccountInfo<'info>],
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) -> Result<Self, ProgramError> {
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if accounts.len() == 0 {
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return Err(ProgramError::NotEnoughAccountKeys);
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}
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let account = &accounts[0];
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*accounts = &accounts[1..];
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let pa = CpiAccount::try_from(account)?;
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Ok(pa)
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}
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}
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impl<'info, T: AccountSerialize + AccountDeserialize + Clone> ToAccountMetas
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for CpiAccount<'info, T>
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{
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fn to_account_metas(&self) -> Vec<AccountMeta> {
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let meta = match self.info.is_writable {
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false => AccountMeta::new_readonly(*self.info.key, self.info.is_signer),
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true => AccountMeta::new(*self.info.key, self.info.is_signer),
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};
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vec![meta]
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}
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}
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impl<'info, T: AccountSerialize + AccountDeserialize + Clone> ToAccountInfos<'info>
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for CpiAccount<'info, T>
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{
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fn to_account_infos(&self) -> Vec<AccountInfo<'info>> {
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vec![self.info.clone()]
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}
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}
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impl<'info, T: AccountSerialize + AccountDeserialize + Clone> ToAccountInfo<'info>
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for CpiAccount<'info, T>
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{
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fn to_account_info(&self) -> AccountInfo<'info> {
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self.info.clone()
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}
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}
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impl<'a, T: AccountSerialize + AccountDeserialize + Clone> Deref for CpiAccount<'a, T> {
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type Target = T;
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fn deref(&self) -> &Self::Target {
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&self.account
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}
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}
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impl<'a, T: AccountSerialize + AccountDeserialize + Clone> DerefMut for CpiAccount<'a, T> {
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fn deref_mut(&mut self) -> &mut Self::Target {
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&mut self.account
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}
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}
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