enum_vec 0.3.1

Efficiently store a vector of enum variants as a packed n-bit vec.
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
33
34
35
36
37
38
39
40
41
42

#![deny(missing_docs)]

//! A vector which efficiently stores enum variants.

extern crate enum_like;
#[cfg(feature = "smallvec")]
extern crate smallvec;

/// Not sure if this is needed
pub use enum_like::*;

// Idea for SmallEnumVec: literally copy paste the code
// s/Vec/SmallVec
// Or maybe
// storage: union { Vec<u32>, [usize; 3] }
// Tag: MSB of num_elements

#[macro_export]
macro_rules! enum_vec {
    ($elem:expr; $n:expr) => ({
        EnumVec::from_elem($elem, $n)
    });
    ($($x:expr),*$(,)*) => ({
        EnumVec::from_slice(&[$($x),*])
    });
}

/// Alternative implementation of `EnumVec` with `Vec<u8>` storage.
pub mod vec_u8;
/// Alternative implementation of `EnumVec` with `Vec<u16>` storage.
pub mod vec_u16;
/// Default `EnumVec` with `Vec<u32>` storage.
pub mod vec_u32;
pub use vec_u32::EnumVec;
/// Alternative implementation of `EnumVec` with `Vec<u64>` storage.
pub mod vec_u64;
/// Alternative implementation of `EnumVec` with `Vec<u128>` storage.
pub mod vec_u128;

#[cfg(feature = "smallvec")]
/// `SmallEnumVec`
pub mod smallvec_u32;