wasmer_journal/concrete/
aligned_cow_str.rs

1use std::{borrow::Cow, ops::Deref};
2
3use rkyv::{
4    rancor::Fallible,
5    ser::{Allocator, WriterExt},
6    vec::{ArchivedVec, VecResolver},
7    Archive, Archived,
8};
9
10#[derive(Clone)]
11pub struct AlignedCowStr<'a> {
12    inner: Cow<'a, str>,
13}
14
15impl<'a> AlignedCowStr<'a> {
16    pub const ALIGNMENT: usize = 16;
17
18    pub fn into_inner(self) -> Cow<'a, str> {
19        self.inner
20    }
21
22    #[inline]
23    pub fn as_slice(&self) -> &str {
24        self.inner.as_ref()
25    }
26
27    pub fn len(&self) -> usize {
28        self.inner.len()
29    }
30
31    pub fn is_empty(&self) -> bool {
32        self.inner.is_empty()
33    }
34}
35
36impl<'a> Default for AlignedCowStr<'a> {
37    fn default() -> Self {
38        Self {
39            inner: String::new().into(),
40        }
41    }
42}
43
44impl<'a> std::fmt::Debug for AlignedCowStr<'a> {
45    #[inline]
46    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
47        self.inner.fmt(f)
48    }
49}
50
51impl<'a> From<String> for AlignedCowStr<'a> {
52    fn from(value: String) -> Self {
53        Self {
54            inner: value.into(),
55        }
56    }
57}
58
59#[allow(clippy::from_over_into)]
60impl<'a> Into<String> for AlignedCowStr<'a> {
61    fn into(self) -> String {
62        self.inner.into_owned()
63    }
64}
65
66impl<'a> From<Cow<'a, str>> for AlignedCowStr<'a> {
67    fn from(value: Cow<'a, str>) -> Self {
68        Self { inner: value }
69    }
70}
71
72#[allow(clippy::from_over_into)]
73impl<'a> Into<Cow<'a, str>> for AlignedCowStr<'a> {
74    fn into(self) -> Cow<'a, str> {
75        self.inner
76    }
77}
78
79impl<'a> Deref for AlignedCowStr<'a> {
80    type Target = str;
81
82    fn deref(&self) -> &Self::Target {
83        self.inner.deref()
84    }
85}
86
87impl<'a> AsRef<str> for AlignedCowStr<'a> {
88    #[inline]
89    fn as_ref(&self) -> &str {
90        self.inner.as_ref()
91    }
92}
93
94impl<'a> Archive for AlignedCowStr<'a> {
95    type Archived = ArchivedVec<u8>;
96    type Resolver = VecResolver;
97
98    #[inline]
99    fn resolve(&self, resolver: Self::Resolver, out: rkyv::Place<Self::Archived>) {
100        ArchivedVec::resolve_from_len(self.inner.as_bytes().len(), resolver, out);
101    }
102}
103
104impl<'a, S> rkyv::Serialize<S> for AlignedCowStr<'a>
105where
106    S: Fallible + WriterExt<S::Error> + Allocator + ?Sized,
107    S::Error: rkyv::rancor::Source,
108{
109    #[inline]
110    fn serialize(&self, serializer: &mut S) -> Result<Self::Resolver, S::Error> {
111        serializer.align(Self::ALIGNMENT)?;
112        ArchivedVec::<Archived<u8>>::serialize_from_slice(self.inner.as_bytes(), serializer)
113    }
114}
wasmer_journal/concrete/aligned_cow_str.rs

wasmer_journal/concrete/
aligned_cow_str.rs
