capnp/private/units.rs
1// Copyright (c) 2013-2015 Sandstorm Development Group, Inc. and contributors
2// Licensed under the MIT License:
3//
4// Permission is hereby granted, free of charge, to any person obtaining a copy
5// of this software and associated documentation files (the "Software"), to deal
6// in the Software without restriction, including without limitation the rights
7// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8// copies of the Software, and to permit persons to whom the Software is
9// furnished to do so, subject to the following conditions:
10//
11// The above copyright notice and this permission notice shall be included in
12// all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20// THE SOFTWARE.
21
22pub type BitCount0 = usize; // `BitCount` clashes with a standard trait
23pub type BitCount8 = u8;
24pub type BitCount16 = u16;
25pub type BitCount32 = u32;
26pub type BitCount64 = u64;
27
28pub type ByteCount = usize;
29pub type ByteCount8 = u8;
30pub type ByteCount16 = u16;
31pub type ByteCount32 = u32;
32pub type ByteCount64 = u64;
33
34pub type WordCount = usize;
35pub type WordCount8 = u8;
36pub type WordCount16 = u16;
37pub type WordCount32 = u32;
38pub type WordCount64 = u64;
39
40pub type ElementCount = usize;
41pub type ElementCount8 = u8;
42pub type ElementCount16 = u16;
43pub type ElementCount32 = u32;
44pub type ElementCount64 = u64;
45
46pub type WirePointerCount = usize;
47pub type WirePointerCount8 = u8;
48pub type WirePointerCount16 = u16;
49pub type WirePointerCount32 = u32;
50pub type WirePointerCount64 = u64;
51
52pub const BITS_PER_BYTE: BitCount0 = 8;
53pub const BITS_PER_WORD: BitCount0 = 64;
54pub const BYTES_PER_WORD: ByteCount = 8;
55
56pub const BITS_PER_POINTER: BitCount0 = 64;
57pub const _BYTES_PER_POINTER: ByteCount = 8;
58pub const WORDS_PER_POINTER: WordCount = 1;
59
60pub const POINTER_SIZE_IN_WORDS: WordCount = 1;
61
62pub fn _bytes_per_element<T>() -> ByteCount {
63 ::core::mem::size_of::<T>()
64}
65
66pub fn bits_per_element<T>() -> BitCount0 {
67 8 * ::core::mem::size_of::<T>()
68}