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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
pub mod repr;
use crate::{Fallible, SerializeUnsized};
use core::{
borrow::Borrow,
cmp, fmt, hash,
ops::{Deref, Index, Range, RangeFrom, RangeFull, RangeInclusive, RangeTo, RangeToInclusive},
pin::Pin,
str,
};
use repr::{ArchivedStringRepr, INLINE_CAPACITY};
#[repr(transparent)]
pub struct ArchivedString(repr::ArchivedStringRepr);
impl ArchivedString {
#[inline]
pub fn as_str(&self) -> &str {
self.0.as_str()
}
#[inline]
pub fn pin_mut_str(self: Pin<&mut Self>) -> Pin<&mut str> {
unsafe { self.map_unchecked_mut(|s| s.0.as_mut_str()) }
}
#[inline]
pub unsafe fn resolve_from_str(
value: &str,
pos: usize,
resolver: StringResolver,
out: *mut Self,
) {
if value.len() <= repr::INLINE_CAPACITY {
ArchivedStringRepr::emplace_inline(value, out.cast());
} else {
ArchivedStringRepr::emplace_out_of_line(value, pos, resolver.pos, out.cast());
}
}
#[inline]
pub fn serialize_from_str<S: Fallible + ?Sized>(
value: &str,
serializer: &mut S,
) -> Result<StringResolver, S::Error>
where
str: SerializeUnsized<S>,
{
if value.len() <= INLINE_CAPACITY {
Ok(StringResolver { pos: 0 })
} else {
Ok(StringResolver {
pos: value.serialize_unsized(serializer)?,
})
}
}
}
impl AsRef<str> for ArchivedString {
#[inline]
fn as_ref(&self) -> &str {
self.as_str()
}
}
impl Borrow<str> for ArchivedString {
#[inline]
fn borrow(&self) -> &str {
self.as_str()
}
}
impl fmt::Debug for ArchivedString {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(self.as_str(), f)
}
}
impl Deref for ArchivedString {
type Target = str;
#[inline]
fn deref(&self) -> &Self::Target {
self.as_str()
}
}
impl fmt::Display for ArchivedString {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(self.as_str(), f)
}
}
impl Eq for ArchivedString {}
impl hash::Hash for ArchivedString {
#[inline]
fn hash<H: hash::Hasher>(&self, state: &mut H) {
self.as_str().hash(state)
}
}
macro_rules! impl_index {
($index:ty) => {
impl Index<$index> for ArchivedString {
type Output = str;
#[inline]
fn index(&self, index: $index) -> &Self::Output {
self.as_str().index(index)
}
}
};
}
impl_index!(Range<usize>);
impl_index!(RangeFrom<usize>);
impl_index!(RangeFull);
impl_index!(RangeInclusive<usize>);
impl_index!(RangeTo<usize>);
impl_index!(RangeToInclusive<usize>);
impl Ord for ArchivedString {
#[inline]
fn cmp(&self, other: &Self) -> cmp::Ordering {
self.as_str().cmp(other.as_str())
}
}
impl PartialEq for ArchivedString {
#[inline]
fn eq(&self, other: &Self) -> bool {
self.as_str() == other.as_str()
}
}
impl PartialOrd for ArchivedString {
#[inline]
fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
self.as_str().partial_cmp(other.as_str())
}
}
impl PartialEq<&str> for ArchivedString {
#[inline]
fn eq(&self, other: &&str) -> bool {
PartialEq::eq(self.as_str(), *other)
}
}
impl PartialEq<str> for ArchivedString {
#[inline]
fn eq(&self, other: &str) -> bool {
PartialEq::eq(self.as_str(), other)
}
}
impl PartialEq<ArchivedString> for &str {
#[inline]
fn eq(&self, other: &ArchivedString) -> bool {
PartialEq::eq(other.as_str(), *self)
}
}
pub struct StringResolver {
pos: usize,
}
#[cfg(feature = "validation")]
const _: () = {
use crate::validation::{
owned::{CheckOwnedPointerError, OwnedPointerError},
ArchiveContext,
};
use bytecheck::{CheckBytes, Error};
impl<C: ArchiveContext + ?Sized> CheckBytes<C> for ArchivedString
where
C::Error: Error,
{
type Error = CheckOwnedPointerError<str, C>;
#[inline]
unsafe fn check_bytes<'a>(
value: *const Self,
context: &mut C,
) -> Result<&'a Self, Self::Error> {
let repr = &*value.cast::<ArchivedStringRepr>();
if repr.is_inline() {
str::check_bytes(repr.as_str_ptr(), context)
.map_err(OwnedPointerError::ValueCheckBytesError)?;
} else {
let base = value.cast();
let offset = repr.out_of_line_offset();
let metadata = repr.len();
let ptr = context
.check_subtree_ptr::<str>(base, offset, metadata)
.map_err(OwnedPointerError::ContextError)?;
let range = context
.push_prefix_subtree(ptr)
.map_err(OwnedPointerError::ContextError)?;
str::check_bytes(ptr, context).map_err(OwnedPointerError::ValueCheckBytesError)?;
context
.pop_prefix_range(range)
.map_err(OwnedPointerError::ContextError)?;
}
Ok(&*value)
}
}
};