hush 0.1.4

Hush is a unix shell scripting language based on the Lua programming language
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

use std::fmt::{self, Display};


/// Collection index out of bounds.
#[derive(Debug)]
pub struct IndexOutOfBounds;


impl Display for IndexOutOfBounds {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "index out of bounds")
  }
}


impl std::error::Error for IndexOutOfBounds { }


/// Collection is empty.
#[derive(Debug)]
pub struct EmptyCollection;


impl Display for EmptyCollection {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "collection is empty")
  }
}


impl std::error::Error for EmptyCollection { }