108 lines
3.3 KiB
Rust
108 lines
3.3 KiB
Rust
use crate::error::ErrorCode;
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use crate::*;
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use solana_program::account_info::AccountInfo;
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use solana_program::instruction::AccountMeta;
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use solana_program::program_error::ProgramError;
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use solana_program::pubkey::Pubkey;
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use std::fmt;
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use std::ops::Deref;
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/// Account container that checks ownership on deserialization.
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#[derive(Clone)]
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pub struct Program<'info, T: Id + AccountDeserialize + Clone> {
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_account: T,
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info: AccountInfo<'info>,
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}
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impl<'info, T: Id + AccountDeserialize + Clone + fmt::Debug> fmt::Debug for Program<'info, T> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("Program")
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.field("account", &self._account)
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.field("info", &self.info)
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.finish()
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}
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}
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impl<'a, T: Id + AccountDeserialize + Clone> Program<'a, T> {
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fn new(info: AccountInfo<'a>, _account: T) -> Program<'a, T> {
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Self { info, _account }
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}
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/// Deserializes the given `info` into a `Program`.
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#[inline(never)]
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pub fn try_from(info: &AccountInfo<'a>) -> Result<Program<'a, T>, ProgramError> {
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if info.key != &T::id() {
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return Err(ErrorCode::InvalidProgramId.into());
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}
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if !info.executable {
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return Err(ErrorCode::InvalidProgramExecutable.into());
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}
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// Programs have no data so use an empty slice.
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let mut empty = &[][..];
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Ok(Program::new(info.clone(), T::try_deserialize(&mut empty)?))
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}
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}
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impl<'info, T: Id + Clone> Accounts<'info> for Program<'info, T>
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where
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T: Id + AccountDeserialize,
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{
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#[inline(never)]
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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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_ix_data: &[u8],
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) -> Result<Self, ProgramError> {
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if accounts.is_empty() {
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return Err(ErrorCode::AccountNotEnoughKeys.into());
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}
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let account = &accounts[0];
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*accounts = &accounts[1..];
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Program::try_from(account)
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}
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}
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impl<'info, T: Id + AccountDeserialize + Clone> ToAccountMetas for Program<'info, T> {
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fn to_account_metas(&self, is_signer: Option<bool>) -> Vec<AccountMeta> {
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let is_signer = is_signer.unwrap_or(self.info.is_signer);
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let meta = match self.info.is_writable {
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false => AccountMeta::new_readonly(*self.info.key, is_signer),
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true => AccountMeta::new(*self.info.key, 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: Id + AccountDeserialize + Clone> ToAccountInfos<'info> for Program<'info, T> {
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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: Id + AccountDeserialize + Clone> ToAccountInfo<'info> for Program<'info, T> {
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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<'info, T: Id + AccountDeserialize + Clone> AsRef<AccountInfo<'info>> for Program<'info, T> {
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fn as_ref(&self) -> &AccountInfo<'info> {
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&self.info
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}
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}
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impl<'info, T: Id + AccountDeserialize + Clone> Deref for Program<'info, T> {
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type Target = AccountInfo<'info>;
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fn deref(&self) -> &Self::Target {
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&self.info
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}
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}
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impl<'info, T: AccountDeserialize + Id + Clone> AccountsExit<'info> for Program<'info, T> {
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fn exit(&self, _program_id: &Pubkey) -> ProgramResult {
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// No-op.
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Ok(())
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}
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}
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