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use std::{error::Error, fmt, io, str::Utf8Error};
#[derive(Debug, PartialEq, Clone)]
pub enum Matcher {
Parse(String),
}
impl Error for Matcher {}
impl fmt::Display for Matcher {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Self::Parse(input) => write!(f, "Failed to parse matcher'{}", input),
}
}
}
#[derive(Debug, PartialEq, Clone)]
pub struct Handler {
reason: String,
}
impl Handler {
pub fn new<T>(reason: T) -> Self
where
T: ToString,
{
Self {
reason: reason.to_string(),
}
}
}
impl Error for Handler {}
impl fmt::Display for Handler {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Handler failed - {}", self.reason)
}
}
#[derive(Debug, PartialEq, Clone)]
pub struct IncorrectInput {
byte: u8,
idx: usize,
}
impl IncorrectInput {
pub fn new(byte: u8, idx: usize) -> Self {
Self { byte, idx }
}
}
impl Error for IncorrectInput {}
impl fmt::Display for IncorrectInput {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"Incorrect input (byte '{}' on idx {})",
self.byte, self.idx
)
}
}
#[derive(Debug, PartialEq, Clone)]
pub struct InputTerminated {
idx: usize,
}
impl InputTerminated {
pub fn new(idx: usize) -> Self {
Self { idx }
}
}
impl Error for InputTerminated {}
impl fmt::Display for InputTerminated {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "InputTerminated (idx '{}')", self.idx)
}
}
#[derive(Debug, PartialEq, Clone)]
pub struct Path {
path: String,
}
impl Path {
pub fn new<T>(path: T) -> Self
where
T: ToString,
{
Self {
path: path.to_string(),
}
}
}
impl Error for Path {}
impl fmt::Display for Path {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Wrong path '{}'", self.path)
}
}
#[derive(Debug)]
pub enum General {
Path(Path),
Handler(Handler),
Matcher(Matcher),
Utf8Error(Utf8Error),
IncorrectInput(IncorrectInput),
InputTerminated(InputTerminated),
IoError(io::Error),
}
impl Error for General {}
impl fmt::Display for General {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Self::Path(err) => err.fmt(f),
Self::Handler(err) => err.fmt(f),
Self::Matcher(err) => err.fmt(f),
Self::Utf8Error(err) => err.fmt(f),
Self::IncorrectInput(err) => err.fmt(f),
Self::InputTerminated(err) => err.fmt(f),
Self::IoError(err) => err.fmt(f),
}
}
}
macro_rules! impl_into_general {
($tp:path, $inner: path) => {
impl From<$tp> for General {
fn from(entity: $tp) -> Self {
$inner(entity)
}
}
};
}
impl_into_general!(Path, Self::Path);
impl_into_general!(Handler, Self::Handler);
impl_into_general!(Matcher, Self::Matcher);
impl_into_general!(Utf8Error, Self::Utf8Error);
impl_into_general!(IncorrectInput, Self::IncorrectInput);
impl_into_general!(InputTerminated, Self::InputTerminated);
impl_into_general!(io::Error, Self::IoError);