mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement From<&mut {slice}> for Box/Rc/Arc<{slice}>

Browse Source
This commit is contained in:
Eduardo Sánchez Muñoz 2024-10-22 21:14:22 +02:00
parent 2dece5bb62
commit 9fe9041cc8
6 changed files with 211 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
library/alloc/src/boxed/convert.rs
View File

@ -109,6 +109,29 @@ fn from(slice: &[T]) -> Box<[T]> {
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl<T: Clone> From<&mut [T]> for Box<[T]> {
/// Converts a `&mut [T]` into a `Box<[T]>`
///
/// This conversion allocates on the heap
/// and performs a copy of `slice` and its contents.
///
/// # Examples
/// ```rust
/// // create a &mut [u8] which will be used to create a Box<[u8]>
/// let mut array = [104, 101, 108, 108, 111];
/// let slice: &mut [u8] = &mut array;
/// let boxed_slice: Box<[u8]> = Box::from(slice);
///
/// println!("{boxed_slice:?}");
/// ```
#[inline]
fn from(slice: &mut [T]) -> Box<[T]> {
Self::from(&*slice)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "box_from_cow", since = "1.45.0")]
impl<T: Clone> From<Cow<'_, [T]>> for Box<[T]> {
@ -147,6 +170,28 @@ fn from(s: &str) -> Box<str> {
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut str> for Box<str> {
/// Converts a `&mut str` into a `Box<str>`
///
/// This conversion allocates on the heap
/// and performs a copy of `s`.
///
/// # Examples
///
/// ```rust
/// let mut original = String::from("hello");
/// let original: &mut str = &mut original;
/// let boxed: Box<str> = Box::from(original);
/// println!("{boxed}");
/// ```
#[inline]
fn from(s: &mut str) -> Box<str> {
Self::from(&*s)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "box_from_cow", since = "1.45.0")]
impl From<Cow<'_, str>> for Box<str> {

31
library/alloc/src/ffi/c_str.rs
View File

@ -772,6 +772,16 @@ fn from(s: &CStr) -> Box<CStr> {
}
}
#[cfg(not(test))]
#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut CStr> for Box<CStr> {
/// Converts a `&mut CStr` into a `Box<CStr>`,
/// by copying the contents into a newly allocated [`Box`].
fn from(s: &mut CStr) -> Box<CStr> {
Self::from(&*s)
}
}
#[stable(feature = "box_from_cow", since = "1.45.0")]
impl From<Cow<'_, CStr>> for Box<CStr> {
/// Converts a `Cow<'a, CStr>` into a `Box<CStr>`,
@ -910,6 +920,17 @@ fn from(s: &CStr) -> Arc<CStr> {
}
}
#[cfg(target_has_atomic = "ptr")]
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut CStr> for Arc<CStr> {
/// Converts a `&mut CStr` into a `Arc<CStr>`,
/// by copying the contents into a newly allocated [`Arc`].
#[inline]
fn from(s: &mut CStr) -> Arc<CStr> {
Arc::from(&*s)
}
}
#[stable(feature = "shared_from_slice2", since = "1.24.0")]
impl From<CString> for Rc<CStr> {
/// Converts a [`CString`] into an <code>[Rc]<[CStr]></code> by moving the [`CString`]
@ -932,6 +953,16 @@ fn from(s: &CStr) -> Rc<CStr> {
}
}
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut CStr> for Rc<CStr> {
/// Converts a `&mut CStr` into a `Rc<CStr>`,
/// by copying the contents into a newly allocated [`Rc`].
#[inline]
fn from(s: &mut CStr) -> Rc<CStr> {
Rc::from(&*s)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
impl Default for Rc<CStr> {

40
library/alloc/src/rc.rs
View File

@ -2651,6 +2651,26 @@ fn from(v: &[T]) -> Rc<[T]> {
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl<T: Clone> From<&mut [T]> for Rc<[T]> {
/// Allocates a reference-counted slice and fills it by cloning `v`'s items.
///
/// # Example
///
/// ```
/// # use std::rc::Rc;
/// let mut original = [1, 2, 3];
/// let original: &mut [i32] = &mut original;
/// let shared: Rc<[i32]> = Rc::from(original);
/// assert_eq!(&[1, 2, 3], &shared[..]);
/// ```
#[inline]
fn from(v: &mut [T]) -> Rc<[T]> {
Rc::from(&*v)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_slice", since = "1.21.0")]
impl From<&str> for Rc<str> {
@ -2670,6 +2690,26 @@ fn from(v: &str) -> Rc<str> {
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut str> for Rc<str> {
/// Allocates a reference-counted string slice and copies `v` into it.
///
/// # Example
///
/// ```
/// # use std::rc::Rc;
/// let mut original = String::from("statue");
/// let original: &mut str = &mut original;
/// let shared: Rc<str> = Rc::from(original);
/// assert_eq!("statue", &shared[..]);
/// ```
#[inline]
fn from(v: &mut str) -> Rc<str> {
Rc::from(&*v)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_slice", since = "1.21.0")]
impl From<String> for Rc<str> {

40
library/alloc/src/sync.rs
View File

@ -3612,6 +3612,26 @@ fn from(v: &[T]) -> Arc<[T]> {
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl<T: Clone> From<&mut [T]> for Arc<[T]> {
/// Allocates a reference-counted slice and fills it by cloning `v`'s items.
///
/// # Example
///
/// ```
/// # use std::sync::Arc;
/// let mut original = [1, 2, 3];
/// let original: &mut [i32] = &mut original;
/// let shared: Arc<[i32]> = Arc::from(original);
/// assert_eq!(&[1, 2, 3], &shared[..]);
/// ```
#[inline]
fn from(v: &mut [T]) -> Arc<[T]> {
Arc::from(&*v)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_slice", since = "1.21.0")]
impl From<&str> for Arc<str> {
@ -3631,6 +3651,26 @@ fn from(v: &str) -> Arc<str> {
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut str> for Arc<str> {
/// Allocates a reference-counted `str` and copies `v` into it.
///
/// # Example
///
/// ```
/// # use std::sync::Arc;
/// let mut original = String::from("eggplant");
/// let original: &mut str = &mut original;
/// let shared: Arc<str> = Arc::from(original);
/// assert_eq!("eggplant", &shared[..]);
/// ```
#[inline]
fn from(v: &mut str) -> Arc<str> {
Arc::from(&*v)
}
}
#[cfg(not(no_global_oom_handling))]
#[stable(feature = "shared_from_slice", since = "1.21.0")]
impl From<String> for Arc<str> {

27
library/std/src/ffi/os_str.rs
View File

@ -1225,6 +1225,15 @@ fn from(s: &OsStr) -> Box<OsStr> {
}
}
#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut OsStr> for Box<OsStr> {
/// Copies the string into a newly allocated <code>[Box]&lt;[OsStr]&gt;</code>.
#[inline]
fn from(s: &mut OsStr) -> Box<OsStr> {
Self::from(&*s)
}
}
#[stable(feature = "box_from_cow", since = "1.45.0")]
impl From<Cow<'_, OsStr>> for Box<OsStr> {
/// Converts a `Cow<'a, OsStr>` into a <code>[Box]&lt;[OsStr]&gt;</code>,
@ -1296,6 +1305,15 @@ fn from(s: &OsStr) -> Arc<OsStr> {
}
}
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut OsStr> for Arc<OsStr> {
/// Copies the string into a newly allocated <code>[Arc]&lt;[OsStr]&gt;</code>.
#[inline]
fn from(s: &mut OsStr) -> Arc<OsStr> {
Arc::from(&*s)
}
}
#[stable(feature = "shared_from_slice2", since = "1.24.0")]
impl From<OsString> for Rc<OsStr> {
/// Converts an [`OsString`] into an <code>[Rc]<[OsStr]></code> by moving the [`OsString`]
@ -1317,6 +1335,15 @@ fn from(s: &OsStr) -> Rc<OsStr> {
}
}
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut OsStr> for Rc<OsStr> {
/// Copies the string into a newly allocated <code>[Rc]&lt;[OsStr]&gt;</code>.
#[inline]
fn from(s: &mut OsStr) -> Rc<OsStr> {
Rc::from(&*s)
}
}
#[stable(feature = "cow_from_osstr", since = "1.28.0")]
impl<'a> From<OsString> for Cow<'a, OsStr> {
/// Moves the string into a [`Cow::Owned`].

28
library/std/src/path.rs
View File

@ -1762,6 +1762,16 @@ fn from(path: &Path) -> Box<Path> {
}
}
#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut Path> for Box<Path> {
/// Creates a boxed [`Path`] from a reference.
///
/// This will allocate and clone `path` to it.
fn from(path: &mut Path) -> Box<Path> {
Self::from(&*path)
}
}
#[stable(feature = "box_from_cow", since = "1.45.0")]
impl From<Cow<'_, Path>> for Box<Path> {
/// Creates a boxed [`Path`] from a clone-on-write pointer.
@ -1990,6 +2000,15 @@ fn from(s: &Path) -> Arc<Path> {
}
}
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut Path> for Arc<Path> {
/// Converts a [`Path`] into an [`Arc`] by copying the [`Path`] data into a new [`Arc`] buffer.
#[inline]
fn from(s: &mut Path) -> Arc<Path> {
Arc::from(&*s)
}
}
#[stable(feature = "shared_from_slice2", since = "1.24.0")]
impl From<PathBuf> for Rc<Path> {
/// Converts a [`PathBuf`] into an <code>[Rc]<[Path]></code> by moving the [`PathBuf`] data into
@ -2011,6 +2030,15 @@ fn from(s: &Path) -> Rc<Path> {
}
}
#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
impl From<&mut Path> for Rc<Path> {
/// Converts a [`Path`] into an [`Rc`] by copying the [`Path`] data into a new [`Rc`] buffer.
#[inline]
fn from(s: &mut Path) -> Rc<Path> {
Rc::from(&*s)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl ToOwned for Path {
type Owned = PathBuf;