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- //! Explicit wrapper for AccountInfo types to emphasize
- //! that no checks are performed
- use crate::error::ErrorCode;
- use crate::{Accounts, AccountsExit, Key, ToAccountInfo, ToAccountInfos, ToAccountMetas};
- use solana_program::account_info::AccountInfo;
- use solana_program::entrypoint::ProgramResult;
- use solana_program::instruction::AccountMeta;
- use solana_program::program_error::ProgramError;
- use solana_program::pubkey::Pubkey;
- use std::ops::Deref;
- /// Explicit wrapper for AccountInfo types to emphasize
- /// that no checks are performed
- #[derive(Debug, Clone)]
- pub struct UncheckedAccount<'info>(AccountInfo<'info>);
- impl<'info> UncheckedAccount<'info> {
- pub fn try_from(acc_info: AccountInfo<'info>) -> Self {
- Self(acc_info)
- }
- }
- impl<'info> Accounts<'info> for UncheckedAccount<'info> {
- fn try_accounts(
- _program_id: &Pubkey,
- accounts: &mut &[AccountInfo<'info>],
- _ix_data: &[u8],
- ) -> Result<Self, ProgramError> {
- if accounts.is_empty() {
- return Err(ErrorCode::AccountNotEnoughKeys.into());
- }
- let account = &accounts[0];
- *accounts = &accounts[1..];
- Ok(UncheckedAccount(account.clone()))
- }
- }
- impl<'info> ToAccountMetas for UncheckedAccount<'info> {
- fn to_account_metas(&self, is_signer: Option<bool>) -> Vec<AccountMeta> {
- let is_signer = is_signer.unwrap_or(self.is_signer);
- let meta = match self.is_writable {
- false => AccountMeta::new_readonly(*self.key, is_signer),
- true => AccountMeta::new(*self.key, is_signer),
- };
- vec![meta]
- }
- }
- impl<'info> ToAccountInfos<'info> for UncheckedAccount<'info> {
- fn to_account_infos(&self) -> Vec<AccountInfo<'info>> {
- vec![self.0.clone()]
- }
- }
- impl<'info> ToAccountInfo<'info> for UncheckedAccount<'info> {
- fn to_account_info(&self) -> AccountInfo<'info> {
- self.0.clone()
- }
- }
- impl<'info> AccountsExit<'info> for UncheckedAccount<'info> {
- fn exit(&self, _program_id: &Pubkey) -> ProgramResult {
- // no-op
- Ok(())
- }
- }
- impl<'info> Key for UncheckedAccount<'info> {
- fn key(&self) -> Pubkey {
- *self.key
- }
- }
- impl<'info> Deref for UncheckedAccount<'info> {
- type Target = AccountInfo<'info>;
- fn deref(&self) -> &Self::Target {
- &self.0
- }
- }
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