[go: up one dir, main page]

lexical-core 0.4.0

Lexical, to- and from-string conversion routines.
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
43
44
45
46
47

//! Macro to facilitate indexing for unchecked variants.

/// Macro to index without bounds checking.
#[cfg(feature = "unchecked_index")]
macro_rules! index {
    // Get
    ($container:ident[$index:expr]) => (
        * unsafe { $container.get_unchecked($index) }
    );
}

/// Macro to mutably index without bounds checking.
#[cfg(feature = "unchecked_index")]
macro_rules! index_mut {
    // Get
    ($container:ident[$index:expr]) => (
        * unsafe { $container.get_unchecked_mut($index) }
    );

    // Set
    ($container:ident[$index:expr] = $rhs:expr) => (
        unsafe { *$container.get_unchecked_mut($index) = $rhs }
    );
}

/// Macro to index with bounds checking.
#[cfg(not(feature = "unchecked_index"))]
macro_rules! index {
    // Get
    ($container:ident[$index:expr]) => (
        $container[$index]
    );
}

/// Macro to mutably index with bounds checking.
#[cfg(not(feature = "unchecked_index"))]
macro_rules! index_mut {
    // Get
    ($container:ident[$index:expr]) => (
        $container[$index]
    );

    // Set
    ($container:ident[$index:expr] = $rhs:expr) => (
        $container[$index] = $rhs
    );
}