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

// Copyright © 2017-2018 Mozilla Foundation
//
// This program is made available under an ISC-style license.  See the
// accompanying file LICENSE for details.

macro_rules! cubeb_enum {
    (pub enum $name:ident { $($variants:tt)* }) => {
        #[cfg(target_env = "msvc")]
        pub type $name = i32;
        #[cfg(not(target_env = "msvc"))]
        pub type $name = u32;
        cubeb_enum!(gen, $name, 0, $($variants)*);
    };
    (pub enum $name:ident: $t:ty { $($variants:tt)* }) => {
        pub type $name = $t;
        cubeb_enum!(gen, $name, 0, $($variants)*);
    };
    (gen, $name:ident, $val:expr, $variant:ident, $($rest:tt)*) => {
        pub const $variant: $name = $val;
        cubeb_enum!(gen, $name, $val+1, $($rest)*);
    };
    (gen, $name:ident, $val:expr, $variant:ident = $e:expr, $($rest:tt)*) => {
        pub const $variant: $name = $e;
        cubeb_enum!(gen, $name, $e+1, $($rest)*);
    };
    (gen, $name:ident, $val:expr, ) => {}
}