patch_rs/
error.rs

1//!
2//! The error chain.
3//!
4
5use std::{io, num};
6
7use failure::Fail;
8
9use crate::parser::Rule;
10
11#[derive(Debug, Fail)]
12pub enum Error {
13    #[fail(display = "Error reading: {}", _0)]
14    Reading(io::Error),
15    #[fail(display = "Error parsing patch: {}", _0)]
16    ParsingPatch(pest::error::Error<Rule>),
17    #[fail(display = "Error parsing context: {}", _0)]
18    ParsingContext(num::ParseIntError),
19    #[fail(display = "Missing an element: {}", _0)]
20    NotFound(&'static str),
21    #[fail(display = "Elements are found in invalid order: {}", _0)]
22    MalformedPatch(&'static str),
23    #[fail(display = "Line #{} not found", _0)]
24    AbruptInput(usize),
25    #[fail(display = "Invalid line #{}", _0)]
26    PatchInputMismatch(usize),
27}
28
29impl From<io::Error> for Error {
30    fn from(err: io::Error) -> Error {
31        Error::Reading(err)
32    }
33}
34
35impl From<pest::error::Error<Rule>> for Error {
36    fn from(err: pest::error::Error<Rule>) -> Error {
37        Error::ParsingPatch(err)
38    }
39}
40
41impl From<num::ParseIntError> for Error {
42    fn from(err: num::ParseIntError) -> Error {
43        Error::ParsingContext(err)
44    }
45}
patch_rs/error.rs

patch_rs/
error.rs
