words_game/
error.rs

1use std::error;
2use std::fmt;
3
4#[derive(Debug)]
5pub enum Error {
6    BadAction(String),
7    NotEnoughTiles,
8    InvalidWord(String),
9    StartingTileNotCovered,
10    WordDoesNotIntersect,
11    NoLettersUsed,
12}
13
14impl fmt::Display for Error {
15    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
16        match *self {
17            Error::BadAction(ref err) => write!(f, "Bad Action error: {}", err),
18            Error::NotEnoughTiles => write!(f, "Not enough tiles"),
19            Error::InvalidWord(ref word) => write!(f, "Word <{}> not in the dictionary", word),
20            Error::StartingTileNotCovered => write!(f, "Starting tile needs to be covered"),
21            Error::WordDoesNotIntersect => write!(f, "Word does not intersect with another word"),
22            Error::NoLettersUsed => write!(f, "You must use at least one letter"),
23        }
24    }
25}
26
27impl error::Error for Error {
28    fn cause(&self) -> Option<&dyn error::Error> {
29        Some(self)
30    }
31}
32
33pub type Result<T> = std::result::Result<T, Box<Error>>;
words_game/error.rs

words_game/
error.rs
