1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
use crate::error::ErrorCode;
use crate::*;
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 solana_program::system_program;
use std::ops::Deref;
#[derive(Debug, Clone)]
pub struct SystemAccount<'info> {
info: AccountInfo<'info>,
}
impl<'info> SystemAccount<'info> {
fn new(info: AccountInfo<'info>) -> SystemAccount<'info> {
Self { info }
}
#[inline(never)]
pub fn try_from(info: &AccountInfo<'info>) -> Result<SystemAccount<'info>, ProgramError> {
if *info.owner != system_program::ID {
return Err(ErrorCode::AccountNotSystemOwned.into());
}
Ok(SystemAccount::new(info.clone()))
}
}
impl<'info> Accounts<'info> for SystemAccount<'info> {
#[inline(never)]
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..];
SystemAccount::try_from(account)
}
}
impl<'info> AccountsExit<'info> for SystemAccount<'info> {
fn exit(&self, _program_id: &Pubkey) -> ProgramResult {
Ok(())
}
}
impl<'info> ToAccountMetas for SystemAccount<'info> {
fn to_account_metas(&self, is_signer: Option<bool>) -> Vec<AccountMeta> {
let is_signer = is_signer.unwrap_or(self.info.is_signer);
let meta = match self.info.is_writable {
false => AccountMeta::new_readonly(*self.info.key, is_signer),
true => AccountMeta::new(*self.info.key, is_signer),
};
vec![meta]
}
}
impl<'info> ToAccountInfos<'info> for SystemAccount<'info> {
fn to_account_infos(&self) -> Vec<AccountInfo<'info>> {
vec![self.info.clone()]
}
}
impl<'info> ToAccountInfo<'info> for SystemAccount<'info> {
fn to_account_info(&self) -> AccountInfo<'info> {
self.info.clone()
}
}
impl<'info> AsRef<AccountInfo<'info>> for SystemAccount<'info> {
fn as_ref(&self) -> &AccountInfo<'info> {
&self.info
}
}
impl<'info> Deref for SystemAccount<'info> {
type Target = AccountInfo<'info>;
fn deref(&self) -> &Self::Target {
&self.info
}
}
impl<'info> Key for SystemAccount<'info> {
fn key(&self) -> Pubkey {
*self.info.key
}
}