18009770154

Committed 25 Sep 2025 01:52PM UTC coverage: 41.837% (-0.7%) from 42.508%

Build # 18009770154

Build Type

push

github

Committed by

zommiommy

Commit Message

ignore Readme on no_std

Run Details

633 of 1513 relevant lines covered (41.84%)

264.98 hits per line

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71.43

/epserde/src/impls/string.rs

/*
 * SPDX-FileCopyrightText: 2023 Inria
 * SPDX-FileCopyrightText: 2023 Sebastiano Vigna
 *
 * SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
 */

//! Implementations for strings.
//!
//! All string types have the same serialized type, `Box<str>`, and
//! the same deserialized type, `&str`. Thus, you can serialize a `String` and
//! fully deserialize it as `Box<str>`.
//!
//! Similarly to the case of [slices](crate::impls::slice), there is
//! a convenience [`SerInner`] implementation for `&str` that
//! serializes it as `Box<str>`.

use crate::prelude::*;
use core::hash::Hash;
use deser::*;
use ser::*;

#[cfg(not(feature = "std"))]
use alloc::boxed::Box;

impl TypeHash for str {
    fn type_hash(hasher: &mut impl core::hash::Hasher) {
        "str".hash(hasher);
    }
}

impl AlignHash for str {
    fn align_hash(_hasher: &mut impl core::hash::Hasher, _offset_of: &mut usize) {}
}

unsafe impl CopyType for String {
    type Copy = Deep;
}

#[cfg(not(feature = "std"))]
use alloc::string::String;

impl TypeHash for String {
    fn type_hash(hasher: &mut impl core::hash::Hasher) {
        "String".hash(hasher);
    }
}

impl AlignHash for String {
    fn align_hash(_hasher: &mut impl core::hash::Hasher, _offset_of: &mut usize) {}
}

impl SerInner for String {
    type SerType = Box<str>;
    const IS_ZERO_COPY: bool = false;
    const ZERO_COPY_MISMATCH: bool = false;

    unsafe fn _ser_inner(&self, backend: &mut impl WriteWithNames) -> ser::Result<()> {
        ser_slice_zero(backend, self.as_bytes())
    }
}

impl DeserInner for String {
    unsafe fn _deser_full_inner(backend: &mut impl ReadWithPos) -> deser::Result<Self> {
        let slice = unsafe { deser_full_vec_zero(backend) }?;
        Ok(String::from_utf8(slice).unwrap())
    }

    type DeserType<'a> = &'a str;

    unsafe fn _deser_eps_inner<'a>(
        backend: &mut SliceWithPos<'a>,
    ) -> deser::Result<Self::DeserType<'a>> {
        let slice = unsafe { deser_eps_slice_zero(backend) }?;
        // SAFETY: Actually this is unsafe if the data we read is not valid UTF-8
        Ok({
            unsafe {
                #[allow(clippy::transmute_bytes_to_str)]
                core::mem::transmute::<&'_ [u8], &'_ str>(slice)
            }
        })
    }
}

unsafe impl CopyType for Box<str> {
    type Copy = Deep;
}

impl TypeHash for Box<str> {
    fn type_hash(hasher: &mut impl core::hash::Hasher) {
        "Box<str>".hash(hasher);
    }
}

impl AlignHash for Box<str> {
    fn align_hash(_hasher: &mut impl core::hash::Hasher, _offset_of: &mut usize) {}
}

impl SerInner for Box<str> {
    type SerType = Self;
    // Box<[$ty]> can, but Vec<Box<[$ty]>> cannot!
    const IS_ZERO_COPY: bool = false;
    const ZERO_COPY_MISMATCH: bool = false;

    unsafe fn _ser_inner(&self, backend: &mut impl WriteWithNames) -> ser::Result<()> {
        ser_slice_zero(backend, self.as_bytes())
    }
}

impl DeserInner for Box<str> {
    #[inline(always)]
    unsafe fn _deser_full_inner(backend: &mut impl ReadWithPos) -> deser::Result<Self> {
        Ok(unsafe { String::_deser_full_inner(backend) }?.into_boxed_str())
    }

    type DeserType<'a> = &'a str;

    #[inline(always)]
    unsafe fn _deser_eps_inner<'a>(
        backend: &mut SliceWithPos<'a>,
    ) -> deser::Result<Self::DeserType<'a>> {
        unsafe { String::_deser_eps_inner(backend) }
    }
}

impl SerInner for &str {
    type SerType = Box<str>;
    const IS_ZERO_COPY: bool = false;
    const ZERO_COPY_MISMATCH: bool = false;

    unsafe fn _ser_inner(&self, backend: &mut impl WriteWithNames) -> ser::Result<()> {
        ser_slice_zero(backend, self.as_bytes())
    }
}

1	/*
2	* SPDX-FileCopyrightText: 2023 Inria
3	* SPDX-FileCopyrightText: 2023 Sebastiano Vigna
4	*
5	* SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
6	*/
7
8	//! Implementations for strings.
9	//!
10	//! All string types have the same serialized type, `Box<str>`, and
11	//! the same deserialized type, `&str`. Thus, you can serialize a `String` and
12	//! fully deserialize it as `Box<str>`.
13	//!
14	//! Similarly to the case of [slices](crate::impls::slice), there is
15	//! a convenience [`SerInner`] implementation for `&str` that
16	//! serializes it as `Box<str>`.
17
18	use crate::prelude::*;
19	use core::hash::Hash;
20	use deser::*;
21	use ser::*;
22
23	#[cfg(not(feature = "std"))]
24	use alloc::boxed::Box;
25
26	impl TypeHash for str {
27	fn type_hash(hasher: &mut impl core::hash::Hasher) {	×
28	"str".hash(hasher);	×
29	}
30	}
31
32	impl AlignHash for str {
33	fn align_hash(_hasher: &mut impl core::hash::Hasher, _offset_of: &mut usize) {}	×
34	}
35
36	unsafe impl CopyType for String {
37	type Copy = Deep;
38	}
39
40	#[cfg(not(feature = "std"))]
41	use alloc::string::String;
42
43	impl TypeHash for String {
44	fn type_hash(hasher: &mut impl core::hash::Hasher) {	13✔
45	"String".hash(hasher);	39✔
46	}
47	}
48
49	impl AlignHash for String {
50	fn align_hash(_hasher: &mut impl core::hash::Hasher, _offset_of: &mut usize) {}	26✔
51	}
52
53	impl SerInner for String {
54	type SerType = Box<str>;
55	const IS_ZERO_COPY: bool = false;
56	const ZERO_COPY_MISMATCH: bool = false;
57
58	unsafe fn _ser_inner(&self, backend: &mut impl WriteWithNames) -> ser::Result<()> {	337✔
59	ser_slice_zero(backend, self.as_bytes())	1,011✔
60	}
61	}
62
63	impl DeserInner for String {
64	unsafe fn _deser_full_inner(backend: &mut impl ReadWithPos) -> deser::Result<Self> {	669✔
65	let slice = unsafe { deser_full_vec_zero(backend) }?;	2,007✔
66	Ok(String::from_utf8(slice).unwrap())	×
67	}
68
69	type DeserType<'a> = &'a str;
70
71	unsafe fn _deser_eps_inner<'a>(	30✔
72	backend: &mut SliceWithPos<'a>,
73	) -> deser::Result<Self::DeserType<'a>> {
74	let slice = unsafe { deser_eps_slice_zero(backend) }?;	90✔
75	// SAFETY: Actually this is unsafe if the data we read is not valid UTF-8
76	Ok({	×
77	unsafe {	×
78	#[allow(clippy::transmute_bytes_to_str)]	×
79	core::mem::transmute::<&'_ [u8], &'_ str>(slice)	×
80	}
81	})
82	}
83	}
84
85	unsafe impl CopyType for Box<str> {
86	type Copy = Deep;
87	}
88
89	impl TypeHash for Box<str> {
90	fn type_hash(hasher: &mut impl core::hash::Hasher) {	25✔
91	"Box<str>".hash(hasher);	75✔
92	}
93	}
94
95	impl AlignHash for Box<str> {
96	fn align_hash(_hasher: &mut impl core::hash::Hasher, _offset_of: &mut usize) {}	50✔
97	}
98
99	impl SerInner for Box<str> {
100	type SerType = Self;
101	// Box<[$ty]> can, but Vec<Box<[$ty]>> cannot!
102	const IS_ZERO_COPY: bool = false;
103	const ZERO_COPY_MISMATCH: bool = false;
104
105	unsafe fn _ser_inner(&self, backend: &mut impl WriteWithNames) -> ser::Result<()> {	2✔
106	ser_slice_zero(backend, self.as_bytes())	6✔
107	}
108	}
109
110	impl DeserInner for Box<str> {
111	#[inline(always)]
112	unsafe fn _deser_full_inner(backend: &mut impl ReadWithPos) -> deser::Result<Self> {	4✔
113	Ok(unsafe { String::_deser_full_inner(backend) }?.into_boxed_str())	12✔
114	}
115
116	type DeserType<'a> = &'a str;
117
118	#[inline(always)]
119	unsafe fn _deser_eps_inner<'a>(	6✔
120	backend: &mut SliceWithPos<'a>,
121	) -> deser::Result<Self::DeserType<'a>> {
122	unsafe { String::_deser_eps_inner(backend) }	12✔
123	}
124	}
125
126	impl SerInner for &str {
127	type SerType = Box<str>;
128	const IS_ZERO_COPY: bool = false;
129	const ZERO_COPY_MISMATCH: bool = false;
130
131	unsafe fn _ser_inner(&self, backend: &mut impl WriteWithNames) -> ser::Result<()> {	2✔
132	ser_slice_zero(backend, self.as_bytes())	6✔
133	}
134	}

vigna / epserde-rs / 18009770154

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