karima_anchor_lang/
cpi_state.rs

1use crate::error::ErrorCode;
2use crate::{
3    AccountDeserialize, AccountSerialize, Accounts, AccountsExit, Key, ToAccountInfo,
4    ToAccountInfos, ToAccountMetas,
5};
6#[allow(deprecated)]
7use crate::{CpiStateContext, ProgramState};
8use solana_program::account_info::AccountInfo;
9use solana_program::entrypoint::ProgramResult;
10use solana_program::instruction::AccountMeta;
11use solana_program::program_error::ProgramError;
12use solana_program::pubkey::Pubkey;
13use std::ops::{Deref, DerefMut};
14
15/// Boxed container for the program state singleton, used when the state
16/// is for a program not currently executing.
17#[derive(Clone)]
18#[deprecated]
19pub struct CpiState<'info, T: AccountSerialize + AccountDeserialize + Clone> {
20    inner: Box<Inner<'info, T>>,
21}
22
23#[derive(Clone)]
24struct Inner<'info, T: AccountSerialize + AccountDeserialize + Clone> {
25    info: AccountInfo<'info>,
26    account: T,
27}
28
29#[allow(deprecated)]
30impl<'info, T: AccountSerialize + AccountDeserialize + Clone> CpiState<'info, T> {
31    pub fn new(i: AccountInfo<'info>, account: T) -> CpiState<'info, T> {
32        Self {
33            inner: Box::new(Inner { info: i, account }),
34        }
35    }
36
37    /// Deserializes the given `info` into a `CpiState`.
38    #[inline(never)]
39    pub fn try_from(info: &AccountInfo<'info>) -> Result<CpiState<'info, T>, ProgramError> {
40        let mut data: &[u8] = &info.try_borrow_data()?;
41        Ok(CpiState::new(info.clone(), T::try_deserialize(&mut data)?))
42    }
43
44    fn seed() -> &'static str {
45        ProgramState::<T>::seed()
46    }
47
48    pub fn address(program_id: &Pubkey) -> Pubkey {
49        let (base, _nonce) = Pubkey::find_program_address(&[], program_id);
50        let seed = Self::seed();
51        let owner = program_id;
52        Pubkey::create_with_seed(&base, seed, owner).unwrap()
53    }
54
55    /// Convenience api for creating a `CpiStateContext`.
56    pub fn context<'a, 'b, 'c, A: Accounts<'info>>(
57        &self,
58        program: AccountInfo<'info>,
59        accounts: A,
60    ) -> CpiStateContext<'a, 'b, 'c, 'info, A> {
61        CpiStateContext::new(program, self.inner.info.clone(), accounts)
62    }
63}
64
65#[allow(deprecated)]
66impl<'info, T> Accounts<'info> for CpiState<'info, T>
67where
68    T: AccountSerialize + AccountDeserialize + Clone,
69{
70    #[inline(never)]
71    fn try_accounts(
72        _program_id: &Pubkey,
73        accounts: &mut &[AccountInfo<'info>],
74        _ix_data: &[u8],
75    ) -> Result<Self, ProgramError> {
76        if accounts.is_empty() {
77            return Err(ErrorCode::AccountNotEnoughKeys.into());
78        }
79        let account = &accounts[0];
80        *accounts = &accounts[1..];
81
82        // No owner or address check is done here. One must use the
83        // #[account(state = <account-name>)] constraint.
84
85        CpiState::try_from(account)
86    }
87}
88
89#[allow(deprecated)]
90impl<'info, T: AccountSerialize + AccountDeserialize + Clone> ToAccountMetas
91    for CpiState<'info, T>
92{
93    fn to_account_metas(&self, is_signer: Option<bool>) -> Vec<AccountMeta> {
94        let is_signer = is_signer.unwrap_or(self.inner.info.is_signer);
95        let meta = match self.inner.info.is_writable {
96            false => AccountMeta::new_readonly(*self.inner.info.key, is_signer),
97            true => AccountMeta::new(*self.inner.info.key, is_signer),
98        };
99        vec![meta]
100    }
101}
102
103#[allow(deprecated)]
104impl<'info, T: AccountSerialize + AccountDeserialize + Clone> ToAccountInfos<'info>
105    for CpiState<'info, T>
106{
107    fn to_account_infos(&self) -> Vec<AccountInfo<'info>> {
108        vec![self.inner.info.clone()]
109    }
110}
111
112#[allow(deprecated)]
113impl<'info, T: AccountSerialize + AccountDeserialize + Clone> ToAccountInfo<'info>
114    for CpiState<'info, T>
115{
116    fn to_account_info(&self) -> AccountInfo<'info> {
117        self.inner.info.clone()
118    }
119}
120
121#[allow(deprecated)]
122impl<'info, T: AccountSerialize + AccountDeserialize + Clone> AsRef<AccountInfo<'info>>
123    for CpiState<'info, T>
124{
125    fn as_ref(&self) -> &AccountInfo<'info> {
126        &self.inner.info
127    }
128}
129
130#[allow(deprecated)]
131impl<'info, T: AccountSerialize + AccountDeserialize + Clone> Deref for CpiState<'info, T> {
132    type Target = T;
133
134    fn deref(&self) -> &Self::Target {
135        &(*self.inner).account
136    }
137}
138
139#[allow(deprecated)]
140impl<'info, T: AccountSerialize + AccountDeserialize + Clone> DerefMut for CpiState<'info, T> {
141    fn deref_mut(&mut self) -> &mut Self::Target {
142        &mut DerefMut::deref_mut(&mut self.inner).account
143    }
144}
145
146#[allow(deprecated)]
147impl<'info, T: AccountSerialize + AccountDeserialize + Clone> AccountsExit<'info>
148    for CpiState<'info, T>
149{
150    fn exit(&self, _program_id: &Pubkey) -> ProgramResult {
151        // no-op
152        Ok(())
153    }
154}
155
156#[allow(deprecated)]
157impl<'info, T: AccountSerialize + AccountDeserialize + Clone> Key for CpiState<'info, T> {
158    fn key(&self) -> Pubkey {
159        *self.inner.info.key
160    }
161}
karima_anchor_lang/cpi_state.rs

karima_anchor_lang/
cpi_state.rs
