58 lines
1.7 KiB
Rust
58 lines
1.7 KiB
Rust
//! Box<T> type to save stack space.
|
|
//!
|
|
//! Sometimes accounts are too large for the stack,
|
|
//! leading to stack violations.
|
|
//!
|
|
//! Boxing the account can help.
|
|
//!
|
|
//! # Example
|
|
//! ```ignore
|
|
//! #[derive(Accounts)]
|
|
//! pub struct Example {
|
|
//! pub my_acc: Box<Account<'info, MyData>>
|
|
//! }
|
|
//! ```
|
|
|
|
use crate::{Accounts, AccountsClose, AccountsExit, Result, ToAccountInfos, ToAccountMetas};
|
|
use solana_program::account_info::AccountInfo;
|
|
use solana_program::instruction::AccountMeta;
|
|
use solana_program::pubkey::Pubkey;
|
|
use std::collections::{BTreeMap, BTreeSet};
|
|
use std::ops::Deref;
|
|
|
|
impl<'info, T: Accounts<'info>> Accounts<'info> for Box<T> {
|
|
fn try_accounts(
|
|
program_id: &Pubkey,
|
|
accounts: &mut &[AccountInfo<'info>],
|
|
ix_data: &[u8],
|
|
bumps: &mut BTreeMap<String, u8>,
|
|
reallocs: &mut BTreeSet<Pubkey>,
|
|
) -> Result<Self> {
|
|
T::try_accounts(program_id, accounts, ix_data, bumps, reallocs).map(Box::new)
|
|
}
|
|
}
|
|
|
|
impl<'info, T: AccountsExit<'info>> AccountsExit<'info> for Box<T> {
|
|
fn exit(&self, program_id: &Pubkey) -> Result<()> {
|
|
T::exit(Deref::deref(self), program_id)
|
|
}
|
|
}
|
|
|
|
impl<'info, T: ToAccountInfos<'info>> ToAccountInfos<'info> for Box<T> {
|
|
fn to_account_infos(&self) -> Vec<AccountInfo<'info>> {
|
|
T::to_account_infos(self)
|
|
}
|
|
}
|
|
|
|
impl<T: ToAccountMetas> ToAccountMetas for Box<T> {
|
|
fn to_account_metas(&self, is_signer: Option<bool>) -> Vec<AccountMeta> {
|
|
T::to_account_metas(self, is_signer)
|
|
}
|
|
}
|
|
|
|
impl<'info, T: AccountsClose<'info>> AccountsClose<'info> for Box<T> {
|
|
fn close(&self, sol_destination: AccountInfo<'info>) -> Result<()> {
|
|
T::close(self, sol_destination)
|
|
}
|
|
}
|