rumtk-arena 0.4.2

Arena/Bump allocator library to support performance critical portions of the rumtk framework.
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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65

/*
 *     rumtk attempts to implement HL7 and medical protocols for interoperability in medicine.
 *     This toolkit aims to be reliable, simple, performant, and standards compliant.
 *     Copyright (C) 2026  Luis M. Santos, M.D. <lsantos@medicalmasses.com>
 *     Copyright (C) 2026  MedicalMasses L.L.C. <contact@medicalmasses.com>
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

use crate::base::*;

pub trait AsPtr {
    #[inline(always)]
    fn as_ptr(&self) -> *const u8 {
        self as *const _ as *const u8
    }
    #[inline(always)]
    fn as_mut_ptr(&mut self) -> *mut u8 {
        self as *mut _ as *mut u8
    }
}

pub trait SizedType {
    #[inline(always)]
    fn size(&self) -> usize;
}

impl SizedType for [u8] { fn size(&self) -> usize { self.len() } }
impl SizedType for &[u8] { fn size(&self) -> usize { self.len() } }
impl SizedType for RUMVec<u8> { fn size(&self) -> usize { self.len() } }
impl SizedType for &RUMVec<u8> { fn size(&self) -> usize { self.len() } }
impl SizedType for RUMString { fn size(&self) -> usize { self.len() } }

pub trait AsSlice: AsPtr + SizedType {
    #[inline(always)]
    fn as_slice(&self) -> &[u8] { as_slice(self.as_ptr(),  self.size()) }
    #[inline(always)]
    fn as_slice_mut(&mut self) -> &mut [u8] {  as_slice_mut(self.as_mut_ptr(),  self.size()) }

    #[inline(always)]
    fn contains(&self, x: &u8) -> bool {
        self.as_slice().contains(x)
    }
}

#[inline]
pub fn as_slice<'a>(src: *const u8, size: usize) -> &'a [u8] {
    unsafe { std::slice::from_raw_parts(src, size) }
}

#[inline]
pub fn as_slice_mut<'a>(src: *mut u8, size: usize) -> &'a mut [u8] {
    unsafe { std::slice::from_raw_parts_mut(src, size) }
}