hopper-native 0.2.1

//! Program error type for Solana on-chain programs.
//!
//! Wire-compatible with pinocchio/solana-program ProgramError.
//! Each variant maps to a fixed u64 error code returned to the runtime.

/// Errors that a Solana program can return.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum ProgramError {
    /// Custom program error with a u32 code.
    Custom(u32),
    InvalidArgument,
    InvalidInstructionData,
    InvalidAccountData,
    AccountDataTooSmall,
    InsufficientFunds,
    IncorrectProgramId,
    MissingRequiredSignature,
    AccountAlreadyInitialized,
    UninitializedAccount,
    NotEnoughAccountKeys,
    AccountBorrowFailed,
    MaxSeedLengthExceeded,
    InvalidSeeds,
    BorshIoError,
    AccountNotRentExempt,
    UnsupportedSysvar,
    IllegalOwner,
    MaxAccountsDataAllocationsExceeded,
    InvalidRealloc,
    MaxInstructionTraceLengthExceeded,
    BuiltinProgramsMustConsumeComputeUnits,
    InvalidAccountOwner,
    ArithmeticOverflow,
    Immutable,
    IncorrectAuthority,
}

// ── u64 conversion (Solana runtime ABI) ──────────────────────────────

impl From<ProgramError> for u64 {
    fn from(err: ProgramError) -> u64 {
        match err {
            ProgramError::Custom(0) => CUSTOM_ZERO,
            ProgramError::Custom(code) => code as u64,
            ProgramError::InvalidArgument => to_builtin(0),
            ProgramError::InvalidInstructionData => to_builtin(1),
            ProgramError::InvalidAccountData => to_builtin(2),
            ProgramError::AccountDataTooSmall => to_builtin(3),
            ProgramError::InsufficientFunds => to_builtin(4),
            ProgramError::IncorrectProgramId => to_builtin(5),
            ProgramError::MissingRequiredSignature => to_builtin(6),
            ProgramError::AccountAlreadyInitialized => to_builtin(7),
            ProgramError::UninitializedAccount => to_builtin(8),
            ProgramError::NotEnoughAccountKeys => to_builtin(9),
            ProgramError::AccountBorrowFailed => to_builtin(10),
            ProgramError::MaxSeedLengthExceeded => to_builtin(11),
            ProgramError::InvalidSeeds => to_builtin(12),
            ProgramError::BorshIoError => to_builtin(13),
            ProgramError::AccountNotRentExempt => to_builtin(14),
            ProgramError::UnsupportedSysvar => to_builtin(15),
            ProgramError::IllegalOwner => to_builtin(16),
            ProgramError::MaxAccountsDataAllocationsExceeded => to_builtin(17),
            ProgramError::InvalidRealloc => to_builtin(18),
            ProgramError::MaxInstructionTraceLengthExceeded => to_builtin(19),
            ProgramError::BuiltinProgramsMustConsumeComputeUnits => to_builtin(20),
            ProgramError::InvalidAccountOwner => to_builtin(21),
            ProgramError::ArithmeticOverflow => to_builtin(22),
            ProgramError::Immutable => to_builtin(23),
            ProgramError::IncorrectAuthority => to_builtin(24),
        }
    }
}

impl From<u64> for ProgramError {
    fn from(code: u64) -> Self {
        if code == CUSTOM_ZERO {
            return ProgramError::Custom(0);
        }
        let builtin = code >> BUILTIN_BIT_SHIFT;
        if code & BUILTIN_LOW_MASK == 0 && builtin >= 2 {
            match builtin - 2 {
                0 => return ProgramError::InvalidArgument,
                1 => return ProgramError::InvalidInstructionData,
                2 => return ProgramError::InvalidAccountData,
                3 => return ProgramError::AccountDataTooSmall,
                4 => return ProgramError::InsufficientFunds,
                5 => return ProgramError::IncorrectProgramId,
                6 => return ProgramError::MissingRequiredSignature,
                7 => return ProgramError::AccountAlreadyInitialized,
                8 => return ProgramError::UninitializedAccount,
                9 => return ProgramError::NotEnoughAccountKeys,
                10 => return ProgramError::AccountBorrowFailed,
                11 => return ProgramError::MaxSeedLengthExceeded,
                12 => return ProgramError::InvalidSeeds,
                13 => return ProgramError::BorshIoError,
                14 => return ProgramError::AccountNotRentExempt,
                15 => return ProgramError::UnsupportedSysvar,
                16 => return ProgramError::IllegalOwner,
                17 => return ProgramError::MaxAccountsDataAllocationsExceeded,
                18 => return ProgramError::InvalidRealloc,
                19 => return ProgramError::MaxInstructionTraceLengthExceeded,
                20 => return ProgramError::BuiltinProgramsMustConsumeComputeUnits,
                21 => return ProgramError::InvalidAccountOwner,
                22 => return ProgramError::ArithmeticOverflow,
                23 => return ProgramError::Immutable,
                24 => return ProgramError::IncorrectAuthority,
                _ => {}
            }
        }
        ProgramError::Custom(code as u32)
    }
}

/// Map a builtin error index to its runtime u64 code.
///
/// The Solana runtime uses a specific encoding for builtin errors:
/// - `Custom(0)` occupies `1 << 32`
/// - builtin errors start at `2 << 32`
const BUILTIN_BIT_SHIFT: usize = 32;
const CUSTOM_ZERO: u64 = 1_u64 << BUILTIN_BIT_SHIFT;
const BUILTIN_LOW_MASK: u64 = (1_u64 << BUILTIN_BIT_SHIFT) - 1;

#[inline(always)]
const fn to_builtin(index: u64) -> u64 {
    (index + 2) << BUILTIN_BIT_SHIFT
}

impl core::fmt::Display for ProgramError {
    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
        match self {
            ProgramError::Custom(code) => write!(f, "Custom({code})"),
            ProgramError::InvalidArgument => write!(f, "InvalidArgument"),
            ProgramError::InvalidInstructionData => write!(f, "InvalidInstructionData"),
            ProgramError::InvalidAccountData => write!(f, "InvalidAccountData"),
            ProgramError::AccountDataTooSmall => write!(f, "AccountDataTooSmall"),
            ProgramError::InsufficientFunds => write!(f, "InsufficientFunds"),
            ProgramError::IncorrectProgramId => write!(f, "IncorrectProgramId"),
            ProgramError::MissingRequiredSignature => write!(f, "MissingRequiredSignature"),
            ProgramError::AccountAlreadyInitialized => write!(f, "AccountAlreadyInitialized"),
            ProgramError::UninitializedAccount => write!(f, "UninitializedAccount"),
            ProgramError::NotEnoughAccountKeys => write!(f, "NotEnoughAccountKeys"),
            ProgramError::AccountBorrowFailed => write!(f, "AccountBorrowFailed"),
            ProgramError::MaxSeedLengthExceeded => write!(f, "MaxSeedLengthExceeded"),
            ProgramError::InvalidSeeds => write!(f, "InvalidSeeds"),
            ProgramError::BorshIoError => write!(f, "BorshIoError"),
            ProgramError::AccountNotRentExempt => write!(f, "AccountNotRentExempt"),
            ProgramError::UnsupportedSysvar => write!(f, "UnsupportedSysvar"),
            ProgramError::IllegalOwner => write!(f, "IllegalOwner"),
            ProgramError::MaxAccountsDataAllocationsExceeded => {
                write!(f, "MaxAccountsDataAllocationsExceeded")
            }
            ProgramError::InvalidRealloc => write!(f, "InvalidRealloc"),
            ProgramError::MaxInstructionTraceLengthExceeded => {
                write!(f, "MaxInstructionTraceLengthExceeded")
            }
            ProgramError::BuiltinProgramsMustConsumeComputeUnits => {
                write!(f, "BuiltinProgramsMustConsumeComputeUnits")
            }
            ProgramError::InvalidAccountOwner => write!(f, "InvalidAccountOwner"),
            ProgramError::ArithmeticOverflow => write!(f, "ArithmeticOverflow"),
            ProgramError::Immutable => write!(f, "Immutable"),
            ProgramError::IncorrectAuthority => write!(f, "IncorrectAuthority"),
        }
    }
}