envpath 0.0.1

A library for parsing and deserialising paths with special rules. The format is similar to `["$proj(com.xy.z): data ? cfg", "$const: os", "$val: rand-16"]`
Documentation 
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
32

use core::ops::{Deref, DerefMut};
use std::path::{Path, PathBuf};

use crate::EnvPath;

/// This implementation allows for mutable access to the underlying path value
/// of `EnvPath`.
impl<'r> DerefMut for EnvPath<'r> {
  fn deref_mut(&mut self) -> &mut Self::Target {
    match &mut self.path {
      Some(p) => p,
      n => {
        *n = Some(PathBuf::new());
        n.as_mut()
          .expect("Failed to deref mut EnvPath.")
      }
    }
  }
}

/// This implementation provides a read-only reference to the underlying path
/// value of `EnvPath`.
impl<'r> Deref for EnvPath<'r> {
  type Target = Path;

  fn deref(&self) -> &Self::Target {
    match self.path {
      Some(ref p) => p.as_path(),
      _ => Path::new(""),
    }
  }
}