//! Crate error types
//!
//! Contains error types utilised by other modules within the crate
use std::error::Error;
use std::fmt;
use std::io;
/// Happens when we parse stuff from strings
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum ParseError {
/// Not enough capacity in underlying integer to perform a math operation
OverflowError,
/// Could not convert a character into a digit or a string into a number
ParseIntError,
/// The base is not supported. E.g. a type only supports base 10, but we try to
/// parse with the base 7.
UnsupportedBase,
}
unsafe impl Send for ParseError {}
unsafe impl Sync for ParseError {}
impl fmt::Display for ParseError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
ParseError::OverflowError => write!(f, "Overflow"),
ParseError::ParseIntError => write!(f, "Could not parse integer"),
ParseError::UnsupportedBase => write!(f, "Unsupported base"),
}
}
}
impl Error for ParseError {}
/// Could not perform division, or fill in the resulting buffer
#[derive(Debug)]
pub enum DivisionError {
/// Trying to divide something by Zero
DivisionByZero,
/// Incapsulates [fmt::Error]
FmtError(fmt::Error),
/// Incapsulates [io::Error]
IoError(io::Error),
/// Errors external to the division algorithm still may be passed
/// through the co-routines wrapped up with this constructor
ExternalError(Box<dyn Error + Send + Sync>),
}
unsafe impl Sync for DivisionError {}
unsafe impl Send for DivisionError {}
impl fmt::Display for DivisionError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
DivisionError::DivisionByZero => write!(f, "Division by zero"),
DivisionError::FmtError(e) => write!(f, "Fmt error: {}", e),
DivisionError::IoError(e) => write!(f, "IO error: {}", e),
DivisionError::ExternalError(e) => write!(f, "External error: {}", e),
}
}
}
impl Error for DivisionError {}
impl From<io::Error> for DivisionError {
fn from(error: io::Error) -> DivisionError {
DivisionError::IoError(error)
}
}
impl From<fmt::Error> for DivisionError {
fn from(error: fmt::Error) -> DivisionError {
DivisionError::FmtError(error)
}
}
