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#[repr(i8)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
pub enum ErrorCode {
Success = 0,
Overflow = -1,
InvalidDigit = -2,
}
#[repr(C)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
pub struct Error {
pub code: ErrorCode,
pub index: usize,
}
#[inline(always)]
pub extern "C" fn is_success(error: Error) -> bool {
error.code == ErrorCode::Success
}
#[inline(always)]
pub extern "C" fn is_overflow(error: Error) -> bool {
error.code == ErrorCode::Overflow
}
#[inline(always)]
pub extern "C" fn is_invalid_digit(error: Error) -> bool {
error.code == ErrorCode::InvalidDigit
}
#[inline(always)]
pub(crate) fn success() -> Error {
Error { code: ErrorCode::Success, index: 0 }
}
#[inline(always)]
pub(crate) fn overflow_error() -> Error {
Error { code: ErrorCode::Overflow, index: 0 }
}
#[inline(always)]
pub(crate) fn invalid_digit_error(index: usize) -> Error {
Error { code: ErrorCode::InvalidDigit, index: index }
}