anchor-spl 2.0.0-rc.1

Anchor v2 SPL account types and constraint markers
Documentation 
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use {
    alloc::vec::Vec, pinocchio::address::Address, solana_program_error::ProgramError,
    solana_pubkey::Pubkey,
};

#[cfg(any(feature = "guardrails", test))]
use anchor_lang::{programs::Token2022, require_eq, Id};

#[cfg(feature = "guardrails")]
#[inline]
pub(crate) fn validate_token_2022_program(program: &Address) -> Result<(), ProgramError> {
    require_eq!(*program, Token2022::id(), ProgramError::IncorrectProgramId);
    Ok(())
}

#[cfg(not(feature = "guardrails"))]
#[inline]
pub(crate) fn validate_token_2022_program(_program: &Address) -> Result<(), ProgramError> {
    Ok(())
}

pub(crate) fn pubkey_refs(pubkeys: &[Pubkey]) -> Vec<&Pubkey> {
    pubkeys.iter().collect()
}