Struct Box 

pub struct Box<T, A = Global>(/* private fields */)
where
    A: Allocator,
    T: ?Sized;

A pointer type that uniquely owns a heap allocation of type T.

See the module-level documentation for more.

Implementations

impl<A> Box<dyn Any, A>

where A: Allocator,

pub fn downcast<T>(self) -> Result<Box<T, A>, Box<dyn Any, A>>

where T: Any,

Available on crate features metrics and opentelemetry only.

Attempts to downcast the box to a concrete type.

Examples

use std::any::Any;

fn print_if_string(value: Box<dyn Any>) {
    if let Ok(string) = value.downcast::<String>() {
        println!("String ({}): {}", string.len(), string);
    }
}

let my_string = "Hello World".to_string();
print_if_string(Box::new(my_string));
print_if_string(Box::new(0i8));

pub unsafe fn downcast_unchecked<T>(self) -> Box<T, A>

where T: Any,

🔬This is a nightly-only experimental API. (downcast_unchecked)

Available on crate features metrics and opentelemetry only.

Downcasts the box to a concrete type.

For a safe alternative see downcast.

Examples

#![feature(downcast_unchecked)]

use std::any::Any;

let x: Box<dyn Any> = Box::new(1_usize);

unsafe {
    assert_eq!(*x.downcast_unchecked::<usize>(), 1);
}

Safety

The contained value must be of type T. Calling this method with the incorrect type is undefined behavior.

impl<A> Box<dyn Any + Send, A>

where A: Allocator,

pub fn downcast<T>(self) -> Result<Box<T, A>, Box<dyn Any + Send, A>>

where T: Any,

Available on crate features metrics and opentelemetry only.

Attempts to downcast the box to a concrete type.

Examples

use std::any::Any;

fn print_if_string(value: Box<dyn Any + Send>) {
    if let Ok(string) = value.downcast::<String>() {
        println!("String ({}): {}", string.len(), string);
    }
}

let my_string = "Hello World".to_string();
print_if_string(Box::new(my_string));
print_if_string(Box::new(0i8));

pub unsafe fn downcast_unchecked<T>(self) -> Box<T, A>

where T: Any,

🔬This is a nightly-only experimental API. (downcast_unchecked)

Available on crate features metrics and opentelemetry only.

Downcasts the box to a concrete type.

For a safe alternative see downcast.

Examples

#![feature(downcast_unchecked)]

use std::any::Any;

let x: Box<dyn Any + Send> = Box::new(1_usize);

unsafe {
    assert_eq!(*x.downcast_unchecked::<usize>(), 1);
}

Safety

The contained value must be of type T. Calling this method with the incorrect type is undefined behavior.

impl<A> Box<dyn Any + Send + Sync, A>

where A: Allocator,

pub fn downcast<T>(self) -> Result<Box<T, A>, Box<dyn Any + Send + Sync, A>>

where T: Any,

Available on crate features metrics and opentelemetry only.

Attempts to downcast the box to a concrete type.

Examples

use std::any::Any;

fn print_if_string(value: Box<dyn Any + Send + Sync>) {
    if let Ok(string) = value.downcast::<String>() {
        println!("String ({}): {}", string.len(), string);
    }
}

let my_string = "Hello World".to_string();
print_if_string(Box::new(my_string));
print_if_string(Box::new(0i8));

pub unsafe fn downcast_unchecked<T>(self) -> Box<T, A>

where T: Any,

🔬This is a nightly-only experimental API. (downcast_unchecked)

Available on crate features metrics and opentelemetry only.

Downcasts the box to a concrete type.

For a safe alternative see downcast.

Examples

#![feature(downcast_unchecked)]

use std::any::Any;

let x: Box<dyn Any + Send + Sync> = Box::new(1_usize);

unsafe {
    assert_eq!(*x.downcast_unchecked::<usize>(), 1);
}

Safety

The contained value must be of type T. Calling this method with the incorrect type is undefined behavior.

impl<T> Box<T>

pub fn new(x: T) -> Box<T>

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Allocates memory on the heap and then places x into it.

This doesn’t actually allocate if T is zero-sized.

Examples

let five = Box::new(5);

pub fn new_uninit() -> Box<MaybeUninit<T>>

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new box with uninitialized contents.

Examples

let mut five = Box::<u32>::new_uninit();
// Deferred initialization:
five.write(5);
let five = unsafe { five.assume_init() };

assert_eq!(*five, 5)

pub fn new_zeroed() -> Box<MaybeUninit<T>>

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new Box with uninitialized contents, with the memory being filled with 0 bytes.

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

let zero = Box::<u32>::new_zeroed();
let zero = unsafe { zero.assume_init() };

assert_eq!(*zero, 0)

pub fn pin(x: T) -> Pin<Box<T>>

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new Pin<Box<T>>. If T does not implement Unpin, then x will be pinned in memory and unable to be moved.

Constructing and pinning of the Box can also be done in two steps: Box::pin(x) does the same as Box::into_pin(Box::new(x)). Consider using into_pin if you already have a Box<T>, or if you want to construct a (pinned) Box in a different way than with Box::new.

pub fn try_new(x: T) -> Result<Box<T>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Allocates memory on the heap then places x into it, returning an error if the allocation fails

This doesn’t actually allocate if T is zero-sized.

Examples

#![feature(allocator_api)]

let five = Box::try_new(5)?;

pub fn try_new_uninit() -> Result<Box<MaybeUninit<T>>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new box with uninitialized contents on the heap, returning an error if the allocation fails

Examples

#![feature(allocator_api)]

let mut five = Box::<u32>::try_new_uninit()?;
// Deferred initialization:
five.write(5);
let five = unsafe { five.assume_init() };

assert_eq!(*five, 5);

pub fn try_new_zeroed() -> Result<Box<MaybeUninit<T>>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new Box with uninitialized contents, with the memory being filled with 0 bytes on the heap

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

#![feature(allocator_api)]

let zero = Box::<u32>::try_new_zeroed()?;
let zero = unsafe { zero.assume_init() };

assert_eq!(*zero, 0);

pub fn map<U>(this: Box<T>, f: impl FnOnce(T) -> U) -> Box<U>

🔬This is a nightly-only experimental API. (smart_pointer_try_map)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Maps the value in a box, reusing the allocation if possible.

f is called on the value in the box, and the result is returned, also boxed.

Note: this is an associated function, which means that you have to call it as Box::map(b, f) instead of b.map(f). This is so that there is no conflict with a method on the inner type.

Examples

#![feature(smart_pointer_try_map)]

let b = Box::new(7);
let new = Box::map(b, |i| i + 7);
assert_eq!(*new, 14);

pub fn try_map<R>( this: Box<T>, f: impl FnOnce(T) -> R, ) -> <<R as Try>::Residual as Residual<Box<<R as Try>::Output>>>::TryType

where R: Try, <R as Try>::Residual: Residual<Box<<R as Try>::Output>>,

🔬This is a nightly-only experimental API. (smart_pointer_try_map)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Attempts to map the value in a box, reusing the allocation if possible.

f is called on the value in the box, and if the operation succeeds, the result is returned, also boxed.

Note: this is an associated function, which means that you have to call it as Box::try_map(b, f) instead of b.try_map(f). This is so that there is no conflict with a method on the inner type.

Examples

#![feature(smart_pointer_try_map)]

let b = Box::new(7);
let new = Box::try_map(b, u32::try_from).unwrap();
assert_eq!(*new, 7);

impl<T, A> Box<T, A>

where A: Allocator,

pub fn new_in(x: T, alloc: A) -> Box<T, A>

where A: Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Allocates memory in the given allocator then places x into it.

This doesn’t actually allocate if T is zero-sized.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let five = Box::new_in(5, System);

pub fn try_new_in(x: T, alloc: A) -> Result<Box<T, A>, AllocError>

where A: Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Allocates memory in the given allocator then places x into it, returning an error if the allocation fails

This doesn’t actually allocate if T is zero-sized.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let five = Box::try_new_in(5, System)?;

pub fn new_uninit_in(alloc: A) -> Box<MaybeUninit<T>, A>

where A: Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new box with uninitialized contents in the provided allocator.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let mut five = Box::<u32, _>::new_uninit_in(System);
// Deferred initialization:
five.write(5);
let five = unsafe { five.assume_init() };

assert_eq!(*five, 5)

pub fn try_new_uninit_in(alloc: A) -> Result<Box<MaybeUninit<T>, A>, AllocError>

where A: Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new box with uninitialized contents in the provided allocator, returning an error if the allocation fails

Examples

#![feature(allocator_api)]

use std::alloc::System;

let mut five = Box::<u32, _>::try_new_uninit_in(System)?;
// Deferred initialization:
five.write(5);
let five = unsafe { five.assume_init() };

assert_eq!(*five, 5);

pub fn new_zeroed_in(alloc: A) -> Box<MaybeUninit<T>, A>

where A: Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new Box with uninitialized contents, with the memory being filled with 0 bytes in the provided allocator.

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let zero = Box::<u32, _>::new_zeroed_in(System);
let zero = unsafe { zero.assume_init() };

assert_eq!(*zero, 0)

pub fn try_new_zeroed_in(alloc: A) -> Result<Box<MaybeUninit<T>, A>, AllocError>

where A: Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new Box with uninitialized contents, with the memory being filled with 0 bytes in the provided allocator, returning an error if the allocation fails,

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let zero = Box::<u32, _>::try_new_zeroed_in(System)?;
let zero = unsafe { zero.assume_init() };

assert_eq!(*zero, 0);

pub fn pin_in(x: T, alloc: A) -> Pin<Box<T, A>>

where A: 'static + Allocator,

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new Pin<Box<T, A>>. If T does not implement Unpin, then x will be pinned in memory and unable to be moved.

Constructing and pinning of the Box can also be done in two steps: Box::pin_in(x, alloc) does the same as Box::into_pin(Box::new_in(x, alloc)). Consider using into_pin if you already have a Box<T, A>, or if you want to construct a (pinned) Box in a different way than with Box::new_in.

Examples

#![feature(allocator_api)]
use std::alloc::System;

let x = Box::pin_in(1, System);

pub fn into_boxed_slice(boxed: Box<T, A>) -> Box<[T], A>

🔬This is a nightly-only experimental API. (box_into_boxed_slice)

Available on crate features metrics and opentelemetry only.

Converts a Box<T> into a Box<[T]>

This conversion does not allocate on the heap and happens in place.

pub fn into_inner(boxed: Box<T, A>) -> T

🔬This is a nightly-only experimental API. (box_into_inner)

Available on crate features metrics and opentelemetry only.

Consumes the Box, returning the wrapped value.

Examples

#![feature(box_into_inner)]

let c = Box::new(5);

assert_eq!(Box::into_inner(c), 5);

pub fn take(boxed: Box<T, A>) -> (T, Box<MaybeUninit<T>, A>)

🔬This is a nightly-only experimental API. (box_take)

Available on crate features metrics and opentelemetry only.

Consumes the Box without consuming its allocation, returning the wrapped value and a Box to the uninitialized memory where the wrapped value used to live.

This can be used together with write to reuse the allocation for multiple boxed values.

Examples

#![feature(box_take)]

let c = Box::new(5);

// take the value out of the box
let (value, uninit) = Box::take(c);
assert_eq!(value, 5);

// reuse the box for a second value
let c = Box::write(uninit, 6);
assert_eq!(*c, 6);

impl<T> Box<T>

where T: CloneToUninit + ?Sized,

pub fn clone_from_ref(src: &T) -> Box<T>

🔬This is a nightly-only experimental API. (clone_from_ref)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Allocates memory on the heap then clones src into it.

This doesn’t actually allocate if src is zero-sized.

Examples

#![feature(clone_from_ref)]

let hello: Box<str> = Box::clone_from_ref("hello");

pub fn try_clone_from_ref(src: &T) -> Result<Box<T>, AllocError>

🔬This is a nightly-only experimental API. (clone_from_ref)

Available on crate features metrics and opentelemetry only.

Allocates memory on the heap then clones src into it, returning an error if allocation fails.

This doesn’t actually allocate if src is zero-sized.

Examples

#![feature(clone_from_ref)]
#![feature(allocator_api)]

let hello: Box<str> = Box::try_clone_from_ref("hello")?;

impl<T, A> Box<T, A>

where T: CloneToUninit + ?Sized, A: Allocator,

pub fn clone_from_ref_in(src: &T, alloc: A) -> Box<T, A>

🔬This is a nightly-only experimental API. (clone_from_ref)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Allocates memory in the given allocator then clones src into it.

This doesn’t actually allocate if src is zero-sized.

Examples

#![feature(clone_from_ref)]
#![feature(allocator_api)]

use std::alloc::System;

let hello: Box<str, System> = Box::clone_from_ref_in("hello", System);

pub fn try_clone_from_ref_in(src: &T, alloc: A) -> Result<Box<T, A>, AllocError>

🔬This is a nightly-only experimental API. (clone_from_ref)

Available on crate features metrics and opentelemetry only.

Allocates memory in the given allocator then clones src into it, returning an error if allocation fails.

This doesn’t actually allocate if src is zero-sized.

Examples

#![feature(clone_from_ref)]
#![feature(allocator_api)]

use std::alloc::System;

let hello: Box<str, System> = Box::try_clone_from_ref_in("hello", System)?;

impl<T> Box<[T]>

pub fn new_uninit_slice(len: usize) -> Box<[MaybeUninit<T>]>

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new boxed slice with uninitialized contents.

Examples

let mut values = Box::<[u32]>::new_uninit_slice(3);
// Deferred initialization:
values[0].write(1);
values[1].write(2);
values[2].write(3);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [1, 2, 3])

pub fn new_zeroed_slice(len: usize) -> Box<[MaybeUninit<T>]>

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new boxed slice with uninitialized contents, with the memory being filled with 0 bytes.

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

let values = Box::<[u32]>::new_zeroed_slice(3);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [0, 0, 0])

pub fn try_new_uninit_slice( len: usize, ) -> Result<Box<[MaybeUninit<T>]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new boxed slice with uninitialized contents. Returns an error if the allocation fails.

Examples

#![feature(allocator_api)]

let mut values = Box::<[u32]>::try_new_uninit_slice(3)?;
// Deferred initialization:
values[0].write(1);
values[1].write(2);
values[2].write(3);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [1, 2, 3]);

pub fn try_new_zeroed_slice( len: usize, ) -> Result<Box<[MaybeUninit<T>]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new boxed slice with uninitialized contents, with the memory being filled with 0 bytes. Returns an error if the allocation fails.

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

#![feature(allocator_api)]

let values = Box::<[u32]>::try_new_zeroed_slice(3)?;
let values = unsafe { values.assume_init() };

assert_eq!(*values, [0, 0, 0]);

impl<T, A> Box<[T], A>

where A: Allocator,

pub fn new_uninit_slice_in(len: usize, alloc: A) -> Box<[MaybeUninit<T>], A>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new boxed slice with uninitialized contents in the provided allocator.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let mut values = Box::<[u32], _>::new_uninit_slice_in(3, System);
// Deferred initialization:
values[0].write(1);
values[1].write(2);
values[2].write(3);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [1, 2, 3])

pub fn new_zeroed_slice_in(len: usize, alloc: A) -> Box<[MaybeUninit<T>], A>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate feature metrics and crate feature opentelemetry and non-no_global_oom_handling only.

Constructs a new boxed slice with uninitialized contents in the provided allocator, with the memory being filled with 0 bytes.

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let values = Box::<[u32], _>::new_zeroed_slice_in(3, System);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [0, 0, 0])

pub fn try_new_uninit_slice_in( len: usize, alloc: A, ) -> Result<Box<[MaybeUninit<T>], A>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new boxed slice with uninitialized contents in the provided allocator. Returns an error if the allocation fails.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let mut values = Box::<[u32], _>::try_new_uninit_slice_in(3, System)?;
// Deferred initialization:
values[0].write(1);
values[1].write(2);
values[2].write(3);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [1, 2, 3]);

pub fn try_new_zeroed_slice_in( len: usize, alloc: A, ) -> Result<Box<[MaybeUninit<T>], A>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a new boxed slice with uninitialized contents in the provided allocator, with the memory being filled with 0 bytes. Returns an error if the allocation fails.

See MaybeUninit::zeroed for examples of correct and incorrect usage of this method.

Examples

#![feature(allocator_api)]

use std::alloc::System;

let values = Box::<[u32], _>::try_new_zeroed_slice_in(3, System)?;
let values = unsafe { values.assume_init() };

assert_eq!(*values, [0, 0, 0]);

pub fn into_array<const N: usize>(self) -> Result<Box<[T; N], A>, Box<[T], A>>

🔬This is a nightly-only experimental API. (alloc_slice_into_array)

Available on crate features metrics and opentelemetry only.

Converts the boxed slice into a boxed array.

This operation does not reallocate; the underlying array of the slice is simply reinterpreted as an array type.

Errors

Returns the original Box<[T]> in the Err variant if self.len() does not equal N.

Examples

#![feature(alloc_slice_into_array)]
let box_slice: Box<[i32]> = Box::new([1, 2, 3]);

let box_array: Box<[i32; 3]> = box_slice.into_array().unwrap();

impl<T, A> Box<MaybeUninit<T>, A>

where A: Allocator,

pub unsafe fn assume_init(self) -> Box<T, A>

Available on crate features metrics and opentelemetry only.

Converts to Box<T, A>.

Safety

As with MaybeUninit::assume_init, it is up to the caller to guarantee that the value really is in an initialized state. Calling this when the content is not yet fully initialized causes immediate undefined behavior.

Examples

let mut five = Box::<u32>::new_uninit();
// Deferred initialization:
five.write(5);
let five: Box<u32> = unsafe { five.assume_init() };

assert_eq!(*five, 5)

pub fn write(boxed: Box<MaybeUninit<T>, A>, value: T) -> Box<T, A>

Available on crate features metrics and opentelemetry only.

Writes the value and converts to Box<T, A>.

This method converts the box similarly to Box::assume_init but writes value into it before conversion thus guaranteeing safety. In some scenarios use of this method may improve performance because the compiler may be able to optimize copying from stack.

Examples

let big_box = Box::<[usize; 1024]>::new_uninit();

let mut array = [0; 1024];
for (i, place) in array.iter_mut().enumerate() {
    *place = i;
}

// The optimizer may be able to elide this copy, so previous code writes
// to heap directly.
let big_box = Box::write(big_box, array);

for (i, x) in big_box.iter().enumerate() {
    assert_eq!(*x, i);
}

impl<T, A> Box<[MaybeUninit<T>], A>

where A: Allocator,

pub unsafe fn assume_init(self) -> Box<[T], A>

Available on crate features metrics and opentelemetry only.

Converts to Box<[T], A>.

Safety

As with MaybeUninit::assume_init, it is up to the caller to guarantee that the values really are in an initialized state. Calling this when the content is not yet fully initialized causes immediate undefined behavior.

Examples

let mut values = Box::<[u32]>::new_uninit_slice(3);
// Deferred initialization:
values[0].write(1);
values[1].write(2);
values[2].write(3);
let values = unsafe { values.assume_init() };

assert_eq!(*values, [1, 2, 3])

impl<T> Box<T>

where T: ?Sized,

pub unsafe fn from_raw(raw: *mut T) -> Box<T>

Available on crate features metrics and opentelemetry only.

Constructs a box from a raw pointer.

After calling this function, the raw pointer is owned by the resulting Box. Specifically, the Box destructor will call the destructor of T and free the allocated memory. For this to be safe, the memory must have been allocated in accordance with the memory layout used by Box .

Safety

This function is unsafe because improper use may lead to memory problems. For example, a double-free may occur if the function is called twice on the same raw pointer.

The raw pointer must point to a block of memory allocated by the global allocator.

The safety conditions are described in the memory layout section. Note that the considerations for unsafe code apply to all Box<T> values.

Examples

Recreate a Box which was previously converted to a raw pointer using Box::into_raw:

let x = Box::new(5);
let ptr = Box::into_raw(x);
let x = unsafe { Box::from_raw(ptr) };

Manually create a Box from scratch by using the global allocator:

use std::alloc::{alloc, Layout};

unsafe {
    let ptr = alloc(Layout::new::<i32>()) as *mut i32;
    // In general .write is required to avoid attempting to destruct
    // the (uninitialized) previous contents of `ptr`, though for this
    // simple example `*ptr = 5` would have worked as well.
    ptr.write(5);
    let x = Box::from_raw(ptr);
}

pub unsafe fn from_non_null(ptr: NonNull<T>) -> Box<T>

Available on crate features metrics and opentelemetry only.

Constructs a box from a NonNull pointer.

After calling this function, the NonNull pointer is owned by the resulting Box. Specifically, the Box destructor will call the destructor of T and free the allocated memory. For this to be safe, the memory must have been allocated in accordance with the memory layout used by Box .

Safety

This function is unsafe because improper use may lead to memory problems. For example, a double-free may occur if the function is called twice on the same NonNull pointer.

The non-null pointer must point to a block of memory allocated by the global allocator.

The safety conditions are described in the memory layout section. Note that the considerations for unsafe code apply to all Box<T> values.

Examples

Recreate a Box which was previously converted to a NonNull pointer using Box::into_non_null:

let x = Box::new(5);
let non_null = Box::into_non_null(x);
let x = unsafe { Box::from_non_null(non_null) };

Manually create a Box from scratch by using the global allocator:

use std::alloc::{alloc, Layout};
use std::ptr::NonNull;

unsafe {
    let non_null = NonNull::new(alloc(Layout::new::<i32>()).cast::<i32>())
        .expect("alloc should have successfully allocated memory");
    // In general .write is required to avoid attempting to destruct
    // the (uninitialized) previous contents of `non_null`.
    non_null.write(5);
    let x = Box::from_non_null(non_null);
}

pub fn into_raw(b: Box<T>) -> *mut T

Available on crate features metrics and opentelemetry only.

Consumes the Box, returning a wrapped raw pointer.

The pointer will be properly aligned and non-null.

After calling this function, the caller is responsible for the memory previously managed by the Box. In particular, the caller should properly destroy T and release the memory, taking into account the memory layout used by Box. The easiest way to do this is to convert the raw pointer back into a Box with the Box::from_raw function, allowing the Box destructor to perform the cleanup.

Note: this is an associated function, which means that you have to call it as Box::into_raw(b) instead of b.into_raw(). This is so that there is no conflict with a method on the inner type.

Examples

Converting the raw pointer back into a Box with Box::from_raw for automatic cleanup:

let x = Box::new(String::from("Hello"));
let ptr = Box::into_raw(x);
let x = unsafe { Box::from_raw(ptr) };

Manual cleanup by explicitly running the destructor and deallocating the memory:

use std::alloc::{dealloc, Layout};
use std::ptr;

let x = Box::new(String::from("Hello"));
let ptr = Box::into_raw(x);
unsafe {
    ptr::drop_in_place(ptr);
    dealloc(ptr as *mut u8, Layout::new::<String>());
}

Note: This is equivalent to the following:

let x = Box::new(String::from("Hello"));
let ptr = Box::into_raw(x);
unsafe {
    drop(Box::from_raw(ptr));
}

pub fn into_non_null(b: Box<T>) -> NonNull<T>

Available on crate features metrics and opentelemetry only.

Consumes the Box, returning a wrapped NonNull pointer.

The pointer will be properly aligned.

After calling this function, the caller is responsible for the memory previously managed by the Box. In particular, the caller should properly destroy T and release the memory, taking into account the memory layout used by Box. The easiest way to do this is to convert the NonNull pointer back into a Box with the Box::from_non_null function, allowing the Box destructor to perform the cleanup.

Note: this is an associated function, which means that you have to call it as Box::into_non_null(b) instead of b.into_non_null(). This is so that there is no conflict with a method on the inner type.

Examples

Converting the NonNull pointer back into a Box with Box::from_non_null for automatic cleanup:

let x = Box::new(String::from("Hello"));
let non_null = Box::into_non_null(x);
let x = unsafe { Box::from_non_null(non_null) };

Manual cleanup by explicitly running the destructor and deallocating the memory:

use std::alloc::{dealloc, Layout};

let x = Box::new(String::from("Hello"));
let non_null = Box::into_non_null(x);
unsafe {
    non_null.drop_in_place();
    dealloc(non_null.as_ptr().cast::<u8>(), Layout::new::<String>());
}

Note: This is equivalent to the following:

let x = Box::new(String::from("Hello"));
let non_null = Box::into_non_null(x);
unsafe {
    drop(Box::from_non_null(non_null));
}

impl<T, A> Box<T, A>

where A: Allocator, T: ?Sized,

pub unsafe fn from_raw_in(raw: *mut T, alloc: A) -> Box<T, A>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a box from a raw pointer in the given allocator.

After calling this function, the raw pointer is owned by the resulting Box. Specifically, the Box destructor will call the destructor of T and free the allocated memory. For this to be safe, the memory must have been allocated in accordance with the memory layout used by Box .

Safety

This function is unsafe because improper use may lead to memory problems. For example, a double-free may occur if the function is called twice on the same raw pointer.

The raw pointer must point to a block of memory allocated by alloc.

The safety conditions are described in the memory layout section. Note that the considerations for unsafe code apply to all Box<T, A> values.

Examples

Recreate a Box which was previously converted to a raw pointer using Box::into_raw_with_allocator:

#![feature(allocator_api)]

use std::alloc::System;

let x = Box::new_in(5, System);
let (ptr, alloc) = Box::into_raw_with_allocator(x);
let x = unsafe { Box::from_raw_in(ptr, alloc) };

Manually create a Box from scratch by using the system allocator:

#![feature(allocator_api, slice_ptr_get)]

use std::alloc::{Allocator, Layout, System};

unsafe {
    let ptr = System.allocate(Layout::new::<i32>())?.as_mut_ptr() as *mut i32;
    // In general .write is required to avoid attempting to destruct
    // the (uninitialized) previous contents of `ptr`, though for this
    // simple example `*ptr = 5` would have worked as well.
    ptr.write(5);
    let x = Box::from_raw_in(ptr, System);
}

pub unsafe fn from_non_null_in(raw: NonNull<T>, alloc: A) -> Box<T, A>

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Constructs a box from a NonNull pointer in the given allocator.

After calling this function, the NonNull pointer is owned by the resulting Box. Specifically, the Box destructor will call the destructor of T and free the allocated memory. For this to be safe, the memory must have been allocated in accordance with the memory layout used by Box .

Safety

This function is unsafe because improper use may lead to memory problems. For example, a double-free may occur if the function is called twice on the same raw pointer.

The non-null pointer must point to a block of memory allocated by alloc.

The safety conditions are described in the memory layout section. Note that the considerations for unsafe code apply to all Box<T, A> values.

Examples

Recreate a Box which was previously converted to a NonNull pointer using Box::into_non_null_with_allocator:

#![feature(allocator_api)]

use std::alloc::System;

let x = Box::new_in(5, System);
let (non_null, alloc) = Box::into_non_null_with_allocator(x);
let x = unsafe { Box::from_non_null_in(non_null, alloc) };

Manually create a Box from scratch by using the system allocator:

#![feature(allocator_api)]

use std::alloc::{Allocator, Layout, System};

unsafe {
    let non_null = System.allocate(Layout::new::<i32>())?.cast::<i32>();
    // In general .write is required to avoid attempting to destruct
    // the (uninitialized) previous contents of `non_null`.
    non_null.write(5);
    let x = Box::from_non_null_in(non_null, System);
}

pub const fn into_raw_with_allocator(b: Box<T, A>) -> (*mut T, A)

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Consumes the Box, returning a wrapped raw pointer and the allocator.

The pointer will be properly aligned and non-null.

After calling this function, the caller is responsible for the memory previously managed by the Box. In particular, the caller should properly destroy T and release the memory, taking into account the memory layout used by Box. The easiest way to do this is to convert the raw pointer back into a Box with the Box::from_raw_in function, allowing the Box destructor to perform the cleanup.

Note: this is an associated function, which means that you have to call it as Box::into_raw_with_allocator(b) instead of b.into_raw_with_allocator(). This is so that there is no conflict with a method on the inner type.

Examples

Converting the raw pointer back into a Box with Box::from_raw_in for automatic cleanup:

#![feature(allocator_api)]

use std::alloc::System;

let x = Box::new_in(String::from("Hello"), System);
let (ptr, alloc) = Box::into_raw_with_allocator(x);
let x = unsafe { Box::from_raw_in(ptr, alloc) };

Manual cleanup by explicitly running the destructor and deallocating the memory:

#![feature(allocator_api)]

use std::alloc::{Allocator, Layout, System};
use std::ptr::{self, NonNull};

let x = Box::new_in(String::from("Hello"), System);
let (ptr, alloc) = Box::into_raw_with_allocator(x);
unsafe {
    ptr::drop_in_place(ptr);
    let non_null = NonNull::new_unchecked(ptr);
    alloc.deallocate(non_null.cast(), Layout::new::<String>());
}

pub fn into_non_null_with_allocator(b: Box<T, A>) -> (NonNull<T>, A)

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Consumes the Box, returning a wrapped NonNull pointer and the allocator.

The pointer will be properly aligned.

After calling this function, the caller is responsible for the memory previously managed by the Box. In particular, the caller should properly destroy T and release the memory, taking into account the memory layout used by Box. The easiest way to do this is to convert the NonNull pointer back into a Box with the Box::from_non_null_in function, allowing the Box destructor to perform the cleanup.

Note: this is an associated function, which means that you have to call it as Box::into_non_null_with_allocator(b) instead of b.into_non_null_with_allocator(). This is so that there is no conflict with a method on the inner type.

Examples

Converting the NonNull pointer back into a Box with Box::from_non_null_in for automatic cleanup:

#![feature(allocator_api)]

use std::alloc::System;

let x = Box::new_in(String::from("Hello"), System);
let (non_null, alloc) = Box::into_non_null_with_allocator(x);
let x = unsafe { Box::from_non_null_in(non_null, alloc) };

Manual cleanup by explicitly running the destructor and deallocating the memory:

#![feature(allocator_api)]

use std::alloc::{Allocator, Layout, System};

let x = Box::new_in(String::from("Hello"), System);
let (non_null, alloc) = Box::into_non_null_with_allocator(x);
unsafe {
    non_null.drop_in_place();
    alloc.deallocate(non_null.cast::<u8>(), Layout::new::<String>());
}

pub fn as_mut_ptr(b: &mut Box<T, A>) -> *mut T

Available on crate features metrics and opentelemetry only.

Returns a raw mutable pointer to the Box’s contents.

The caller must ensure that the Box outlives the pointer this function returns, or else it will end up dangling.

This method guarantees that for the purpose of the aliasing model, this method does not materialize a reference to the underlying memory, and thus the returned pointer will remain valid when mixed with other calls to as_ptr, as_mut_ptr, and as_non_null. Note that calling other methods that materialize references to the memory may still invalidate this pointer. See the example below for how this guarantee can be used.

Examples

Due to the aliasing guarantee, the following code is legal:

unsafe {
    let mut b = Box::new(0);
    let ptr1 = Box::as_mut_ptr(&mut b);
    ptr1.write(1);
    let ptr2 = Box::as_mut_ptr(&mut b);
    ptr2.write(2);
    // Notably, the write to `ptr2` did *not* invalidate `ptr1`:
    ptr1.write(3);
}

pub fn as_ptr(b: &Box<T, A>) -> *const T

Available on crate features metrics and opentelemetry only.

Returns a raw pointer to the Box’s contents.

The caller must ensure that the Box outlives the pointer this function returns, or else it will end up dangling.

The caller must also ensure that the memory the pointer (non-transitively) points to is never written to (except inside an UnsafeCell) using this pointer or any pointer derived from it. If you need to mutate the contents of the Box, use as_mut_ptr.

This method guarantees that for the purpose of the aliasing model, this method does not materialize a reference to the underlying memory, and thus the returned pointer will remain valid when mixed with other calls to as_ptr, as_mut_ptr, and as_non_null. Note that calling other methods that materialize mutable references to the memory, as well as writing to this memory, may still invalidate this pointer. See the example below for how this guarantee can be used.

Examples

Due to the aliasing guarantee, the following code is legal:

unsafe {
    let mut v = Box::new(0);
    let ptr1 = Box::as_ptr(&v);
    let ptr2 = Box::as_mut_ptr(&mut v);
    let _val = ptr2.read();
    // No write to this memory has happened yet, so `ptr1` is still valid.
    let _val = ptr1.read();
    // However, once we do a write...
    ptr2.write(1);
    // ... `ptr1` is no longer valid.
    // This would be UB: let _val = ptr1.read();
}

pub fn as_non_null(b: &mut Box<T, A>) -> NonNull<T>

🔬This is a nightly-only experimental API. (box_as_non_null)

Available on crate features metrics and opentelemetry only.

Returns a NonNull pointer to the Box’s contents.

The caller must ensure that the Box outlives the pointer this function returns, or else it will end up dangling.

This method guarantees that for the purpose of the aliasing model, this method does not materialize a reference to the underlying memory, and thus the returned pointer will remain valid when mixed with other calls to as_ptr, as_mut_ptr, and as_non_null. Note that calling other methods that materialize references to the memory may still invalidate this pointer. See the example below for how this guarantee can be used.

Examples

Due to the aliasing guarantee, the following code is legal:

#![feature(box_as_non_null)]

unsafe {
    let mut b = Box::new(0);
    let ptr1 = Box::as_non_null(&mut b);
    ptr1.write(1);
    let ptr2 = Box::as_non_null(&mut b);
    ptr2.write(2);
    // Notably, the write to `ptr2` did *not* invalidate `ptr1`:
    ptr1.write(3);
}

pub fn allocator(b: &Box<T, A>) -> &A

🔬This is a nightly-only experimental API. (allocator_api)

Available on crate features metrics and opentelemetry only.

Returns a reference to the underlying allocator.

Note: this is an associated function, which means that you have to call it as Box::allocator(&b) instead of b.allocator(). This is so that there is no conflict with a method on the inner type.

pub fn leak<'a>(b: Box<T, A>) -> &'a mut T

where A: 'a,

Available on crate features metrics and opentelemetry only.

Consumes and leaks the Box, returning a mutable reference, &'a mut T.

Note that the type T must outlive the chosen lifetime 'a. If the type has only static references, or none at all, then this may be chosen to be 'static.

This function is mainly useful for data that lives for the remainder of the program’s life, i.e., memory that is meant to leak. Reconstructing (“unleaking”) a Box from the mutable reference returned here (e.g. via Box::from_raw) is a grey area (meaning it is possible under specific circumstances but many seemingly harmless ways of doing it are undefined behavior) and should be avoided. If the memory should eventually be freed, prefer to use Box::into_raw or Box::into_non_null instead.

Note: this is an associated function, which means that you have to call it as Box::leak(b) instead of b.leak(). This is so that there is no conflict with a method on the inner type.

Examples

Simple usage:

let x = Box::new(41);
let static_ref: &'static mut usize = Box::leak(x);
*static_ref += 1;
assert_eq!(*static_ref, 42);

Unsized data:

let x = vec![1, 2, 3].into_boxed_slice();
let static_ref = Box::leak(x);
static_ref[0] = 4;
assert_eq!(*static_ref, [4, 2, 3]);

pub fn into_pin(boxed: Box<T, A>) -> Pin<Box<T, A>>

where A: 'static,

Available on crate features metrics and opentelemetry only.

Converts a Box<T> into a Pin<Box<T>>. If T does not implement Unpin, then *boxed will be pinned in memory and unable to be moved.

This conversion does not allocate on the heap and happens in place.

This is also available via From.

Constructing and pinning a Box with Box::into_pin(Box::new(x)) can also be written more concisely using Box::pin(x). This into_pin method is useful if you already have a Box<T>, or you are constructing a (pinned) Box in a different way than with Box::new.

Notes

It’s not recommended that crates add an impl like From<Box<T>> for Pin<T>, as it’ll introduce an ambiguity when calling Pin::from. A demonstration of such a poor impl is shown below.

struct Foo; // A type defined in this crate.
impl From<Box<()>> for Pin<Foo> {
    fn from(_: Box<()>) -> Pin<Foo> {
        Pin::new(Foo)
    }
}

let foo = Box::new(());
let bar = Pin::from(foo);

Trait Implementations

impl<I, A> !Iterator for Box<[I], A>

where A: Allocator,

This implementation is required to make sure that the Box<[I]>: IntoIterator implementation doesn’t overlap with IntoIterator for T where T: Iterator blanket.

impl<'a, I, A> !Iterator for &'a Box<[I], A>

where A: Allocator,

This implementation is required to make sure that the &Box<[I]>: IntoIterator implementation doesn’t overlap with IntoIterator for T where T: Iterator blanket.

impl<'a, I, A> !Iterator for &'a mut Box<[I], A>

where A: Allocator,

This implementation is required to make sure that the &mut Box<[I]>: IntoIterator implementation doesn’t overlap with IntoIterator for T where T: Iterator blanket.

impl<I, const N: usize, A> !Iterator for Box<[I; N], A>

where A: Allocator,

This implementation is required to make sure that the Box<[I; N]>: IntoIterator implementation doesn’t overlap with IntoIterator for T where T: Iterator blanket.

impl<'a, const N: usize, I, A> !Iterator for &'a Box<[I; N], A>

where A: Allocator,

This implementation is required to make sure that the &Box<[I; N]>: IntoIterator implementation doesn’t overlap with IntoIterator for T where T: Iterator blanket.

impl<'a, const N: usize, I, A> !Iterator for &'a mut Box<[I; N], A>

where A: Allocator,

This implementation is required to make sure that the &mut Box<[I; N]>: IntoIterator implementation doesn’t overlap with IntoIterator for T where T: Iterator blanket.

impl<T, A> Allocator for Box<T, A>

where T: Allocator + ?Sized, A: Allocator,

fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to allocate a block of memory.

fn allocate_zeroed(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Behaves like allocate, but also ensures that the returned memory is zero-initialized.

unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout)

🔬This is a nightly-only experimental API. (allocator_api)

Deallocates the memory referenced by ptr.

unsafe fn grow( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to extend the memory block.

unsafe fn grow_zeroed( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Behaves like grow, but also ensures that the new contents are set to zero before being returned.

unsafe fn shrink( &self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to shrink the memory block.

fn by_ref(&self) -> &Self

where Self: Sized,

🔬This is a nightly-only experimental API. (allocator_api)

Creates a “by reference” adapter for this instance of Allocator.

impl<T> Any for Box<T>

where T: Any,

fn is_any(&self) -> bool

Returns true if the value is considered to be “any” within the context of the type.

impl<'a, A> Arbitrary<'a> for Box<A>

where A: Arbitrary<'a>,

fn arbitrary(u: &mut Unstructured<'a>) -> Result<Box<A>, Error>

Generate an arbitrary value of Self from the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

impl<'a, A> Arbitrary<'a> for Box<[A]>

where A: Arbitrary<'a>,

fn arbitrary(u: &mut Unstructured<'a>) -> Result<Box<[A]>, Error>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Box<[A]>, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(_depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl<'a> Arbitrary<'a> for Box<str>

fn arbitrary(u: &mut Unstructured<'a>) -> Result<Box<str>, Error>

Generate an arbitrary value of Self from the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl<T, const N: usize> ArrayLike for Box<[T; N]>

Available on crate feature read only.

type Item = T

Type of the elements being stored.

impl<T> AsFd for Box<T>

where T: AsFd + ?Sized,

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl<T, A> AsMut<T> for Box<T, A>

where A: Allocator, T: ?Sized,

fn as_mut(&mut self) -> &mut T

Converts this type into a mutable reference of the (usually inferred) input type.

impl<T> AsRawFd for Box<T>

where T: AsRawFd,

fn as_raw_fd(&self) -> i32

Extracts the raw file descriptor.

impl<T, A> AsRef<T> for Box<T, A>

where A: Allocator, T: ?Sized,

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

impl<T> AsyncBufRead for Box<T>

where T: AsyncBufRead + Unpin + ?Sized,

fn poll_fill_buf( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<&[u8], Error>>

Attempts to return the contents of the internal buffer, filling it with more data from the inner reader if it is empty.

fn consume(self: Pin<&mut Box<T>>, amt: usize)

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to poll_read.

impl<T> AsyncBufRead for Box<T>

where T: AsyncBufRead + Unpin + ?Sized,

fn poll_fill_buf( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<&[u8], Error>>

Attempt to return the contents of the internal buffer, filling it with more data from the inner reader if it is empty.

fn consume(self: Pin<&mut Box<T>>, amt: usize)

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to poll_read.

impl<Args, F, A> AsyncFn<Args> for Box<F, A>

where Args: Tuple, F: AsyncFn<Args> + ?Sized, A: Allocator,

extern "rust-call" fn async_call( &self, args: Args, ) -> <Box<F, A> as AsyncFnMut<Args>>::CallRefFuture<'_>

🔬This is a nightly-only experimental API. (async_fn_traits)

Call the AsyncFn, returning a future which may borrow from the called closure.

impl<Args, F, A> AsyncFnMut<Args> for Box<F, A>

where Args: Tuple, F: AsyncFnMut<Args> + ?Sized, A: Allocator,

type CallRefFuture<'a> = <F as AsyncFnMut<Args>>::CallRefFuture<'a> where Box<F, A>: 'a

🔬This is a nightly-only experimental API. (async_fn_traits)

Future returned by AsyncFnMut::async_call_mut and AsyncFn::async_call.

extern "rust-call" fn async_call_mut( &mut self, args: Args, ) -> <Box<F, A> as AsyncFnMut<Args>>::CallRefFuture<'_>

🔬This is a nightly-only experimental API. (async_fn_traits)

Call the AsyncFnMut, returning a future which may borrow from the called closure.

impl<Args, F, A> AsyncFnOnce<Args> for Box<F, A>

where Args: Tuple, F: AsyncFnOnce<Args> + ?Sized, A: Allocator,

type Output = <F as AsyncFnOnce<Args>>::Output

🔬This is a nightly-only experimental API. (async_fn_traits)

Output type of the called closure’s future.

type CallOnceFuture = <F as AsyncFnOnce<Args>>::CallOnceFuture

🔬This is a nightly-only experimental API. (async_fn_traits)

Future returned by AsyncFnOnce::async_call_once.

extern "rust-call" fn async_call_once( self, args: Args, ) -> <Box<F, A> as AsyncFnOnce<Args>>::CallOnceFuture

🔬This is a nightly-only experimental API. (async_fn_traits)

Call the AsyncFnOnce, returning a future which may move out of the called closure.

impl<S> AsyncIterator for Box<S>

where S: AsyncIterator + Unpin + ?Sized,

type Item = <S as AsyncIterator>::Item

🔬This is a nightly-only experimental API. (async_iterator)

The type of items yielded by the async iterator.

fn poll_next( self: Pin<&mut Box<S>>, cx: &mut Context<'_>, ) -> Poll<Option<<Box<S> as AsyncIterator>::Item>>

🔬This is a nightly-only experimental API. (async_iterator)

Attempts to pull out the next value of this async iterator, registering the current task for wakeup if the value is not yet available, and returning None if the async iterator is exhausted.

fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (async_iterator)

Returns the bounds on the remaining length of the async iterator.

impl<T> AsyncRead for Box<T>

where T: AsyncRead + Unpin + ?Sized,

fn poll_read( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>, ) -> Poll<Result<(), Error>>

Attempts to read from the AsyncRead into buf.

impl<T> AsyncRead for Box<T>

where T: AsyncRead + Unpin + ?Sized,

fn poll_read( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<usize, Error>>

Attempt to read from the AsyncRead into buf.

fn poll_read_vectored( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, bufs: &mut [IoSliceMut<'_>], ) -> Poll<Result<usize, Error>>

Attempt to read from the AsyncRead into bufs using vectored IO operations.

impl<T> AsyncSeek for Box<T>

where T: AsyncSeek + Unpin + ?Sized,

fn start_seek(self: Pin<&mut Box<T>>, pos: SeekFrom) -> Result<(), Error>

Attempts to seek to an offset, in bytes, in a stream.

fn poll_complete( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<u64, Error>>

Waits for a seek operation to complete.

impl<T> AsyncSeek for Box<T>

where T: AsyncSeek + Unpin + ?Sized,

fn poll_seek( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, pos: SeekFrom, ) -> Poll<Result<u64, Error>>

Attempt to seek to an offset, in bytes, in a stream.

impl<T> AsyncWrite for Box<T>

where T: AsyncWrite + Unpin + ?Sized,

fn poll_write( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, buf: &[u8], ) -> Poll<Result<usize, Error>>

Attempt to write bytes from buf into the object.

fn poll_write_vectored( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>], ) -> Poll<Result<usize, Error>>

Like poll_write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

Determines if this writer has an efficient poll_write_vectored implementation.

fn poll_flush( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<(), Error>>

Attempts to flush the object, ensuring that any buffered data reach their destination.

fn poll_shutdown( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<(), Error>>

Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down.

impl<T> AsyncWrite for Box<T>

where T: AsyncWrite + Unpin + ?Sized,

fn poll_write( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, buf: &[u8], ) -> Poll<Result<usize, Error>>

Attempt to write bytes from buf into the object.

fn poll_write_vectored( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>], ) -> Poll<Result<usize, Error>>

Attempt to write bytes from bufs into the object using vectored IO operations.

fn poll_flush( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<(), Error>>

Attempt to flush the object, ensuring that any buffered data reach their destination.

fn poll_close( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Result<(), Error>>

Attempt to close the object.

impl<T> Body for Box<T>

where T: Body + Unpin + ?Sized,

type Data = <T as Body>::Data

Values yielded by the Body.

type Error = <T as Body>::Error

The error type this Body might generate.

fn poll_frame( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Option<Result<Frame<<Box<T> as Body>::Data>, <Box<T> as Body>::Error>>>

Attempt to pull out the next frame of this stream.

fn is_end_stream(&self) -> bool

A hint that may return true when the end of stream has been reached.

fn size_hint(&self) -> SizeHint

A hint that returns the bounds on the remaining length of the stream.

impl<T> Body for Box<T>

where T: Body + Unpin + ?Sized,

type Data = <T as Body>::Data

Values yielded by the Body.

type Error = <T as Body>::Error

The error type this Body might generate.

fn poll_frame( self: Pin<&mut Box<T>>, cx: &mut Context<'_>, ) -> Poll<Option<Result<Frame<<Box<T> as Body>::Data>, <Box<T> as Body>::Error>>>

Attempt to pull out the next frame of this stream.

fn is_end_stream(&self) -> bool

A hint that may return true when the end of stream has been reached.

fn size_hint(&self) -> SizeHint

A hint that returns the bounds on the remaining length of the stream.

impl<T, A> Borrow<T> for Box<T, A>

where A: Allocator, T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<T, A> BorrowMut<T> for Box<T, A>

where A: Allocator, T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value.

impl BoxErrorExt for Box<dyn Error + Send + Sync>

fn from_static_str(e: &'static str) -> Box<dyn Error + Send + Sync>

Create a BoxError from a static str.

impl<T> Buf for Box<T>

where T: Buf + ?Sized,

fn remaining(&self) -> usize

Returns the number of bytes between the current position and the end of the buffer.

fn chunk(&self) -> &[u8]

Returns a slice starting at the current position and of length between 0 and Buf::remaining(). Note that this can return a shorter slice (this allows non-continuous internal representation).

fn chunks_vectored<'b>(&'b self, dst: &mut [IoSlice<'b>]) -> usize

Available on crate feature std only.

Fills dst with potentially multiple slices starting at self’s current position.

fn advance(&mut self, cnt: usize)

Advance the internal cursor of the Buf

fn has_remaining(&self) -> bool

Returns true if there are any more bytes to consume

fn copy_to_slice(&mut self, dst: &mut [u8])

Copies bytes from self into dst.

fn get_u8(&mut self) -> u8

Gets an unsigned 8 bit integer from self.

fn get_i8(&mut self) -> i8

Gets a signed 8 bit integer from self.

fn get_u16(&mut self) -> u16

Gets an unsigned 16 bit integer from self in big-endian byte order.

fn get_u16_le(&mut self) -> u16

Gets an unsigned 16 bit integer from self in little-endian byte order.

fn get_u16_ne(&mut self) -> u16

Gets an unsigned 16 bit integer from self in native-endian byte order.

fn get_i16(&mut self) -> i16

Gets a signed 16 bit integer from self in big-endian byte order.

fn get_i16_le(&mut self) -> i16

Gets a signed 16 bit integer from self in little-endian byte order.

fn get_i16_ne(&mut self) -> i16

Gets a signed 16 bit integer from self in native-endian byte order.

fn get_u32(&mut self) -> u32

Gets an unsigned 32 bit integer from self in the big-endian byte order.

fn get_u32_le(&mut self) -> u32

Gets an unsigned 32 bit integer from self in the little-endian byte order.

fn get_u32_ne(&mut self) -> u32

Gets an unsigned 32 bit integer from self in native-endian byte order.

fn get_i32(&mut self) -> i32

Gets a signed 32 bit integer from self in big-endian byte order.

fn get_i32_le(&mut self) -> i32

Gets a signed 32 bit integer from self in little-endian byte order.

fn get_i32_ne(&mut self) -> i32

Gets a signed 32 bit integer from self in native-endian byte order.

fn get_u64(&mut self) -> u64

Gets an unsigned 64 bit integer from self in big-endian byte order.

fn get_u64_le(&mut self) -> u64

Gets an unsigned 64 bit integer from self in little-endian byte order.

fn get_u64_ne(&mut self) -> u64

Gets an unsigned 64 bit integer from self in native-endian byte order.

fn get_i64(&mut self) -> i64

Gets a signed 64 bit integer from self in big-endian byte order.

fn get_i64_le(&mut self) -> i64

Gets a signed 64 bit integer from self in little-endian byte order.

fn get_i64_ne(&mut self) -> i64

Gets a signed 64 bit integer from self in native-endian byte order.

fn get_u128(&mut self) -> u128

Gets an unsigned 128 bit integer from self in big-endian byte order.

fn get_u128_le(&mut self) -> u128

Gets an unsigned 128 bit integer from self in little-endian byte order.

fn get_u128_ne(&mut self) -> u128

Gets an unsigned 128 bit integer from self in native-endian byte order.

fn get_i128(&mut self) -> i128

Gets a signed 128 bit integer from self in big-endian byte order.

fn get_i128_le(&mut self) -> i128

Gets a signed 128 bit integer from self in little-endian byte order.

fn get_i128_ne(&mut self) -> i128

Gets a signed 128 bit integer from self in native-endian byte order.

fn get_uint(&mut self, nbytes: usize) -> u64

Gets an unsigned n-byte integer from self in big-endian byte order.

fn get_uint_le(&mut self, nbytes: usize) -> u64

Gets an unsigned n-byte integer from self in little-endian byte order.

fn get_uint_ne(&mut self, nbytes: usize) -> u64

Gets an unsigned n-byte integer from self in native-endian byte order.

fn get_int(&mut self, nbytes: usize) -> i64

Gets a signed n-byte integer from self in big-endian byte order.

fn get_int_le(&mut self, nbytes: usize) -> i64

Gets a signed n-byte integer from self in little-endian byte order.

fn get_int_ne(&mut self, nbytes: usize) -> i64

Gets a signed n-byte integer from self in native-endian byte order.

fn get_f32(&mut self) -> f32

Gets an IEEE754 single-precision (4 bytes) floating point number from self in big-endian byte order.

fn get_f32_le(&mut self) -> f32

Gets an IEEE754 single-precision (4 bytes) floating point number from self in little-endian byte order.

fn get_f32_ne(&mut self) -> f32

Gets an IEEE754 single-precision (4 bytes) floating point number from self in native-endian byte order.

fn get_f64(&mut self) -> f64

Gets an IEEE754 double-precision (8 bytes) floating point number from self in big-endian byte order.

fn get_f64_le(&mut self) -> f64

Gets an IEEE754 double-precision (8 bytes) floating point number from self in little-endian byte order.

fn get_f64_ne(&mut self) -> f64

Gets an IEEE754 double-precision (8 bytes) floating point number from self in native-endian byte order.

fn try_copy_to_slice(&mut self, dst: &mut [u8]) -> Result<(), TryGetError>

Copies bytes from self into dst.

fn try_get_u8(&mut self) -> Result<u8, TryGetError>

Gets an unsigned 8 bit integer from self.

fn try_get_i8(&mut self) -> Result<i8, TryGetError>

Gets a signed 8 bit integer from self.

fn try_get_u16(&mut self) -> Result<u16, TryGetError>

Gets an unsigned 16 bit integer from self in big-endian byte order.

fn try_get_u16_le(&mut self) -> Result<u16, TryGetError>

Gets an unsigned 16 bit integer from self in little-endian byte order.

fn try_get_u16_ne(&mut self) -> Result<u16, TryGetError>

Gets an unsigned 16 bit integer from self in native-endian byte order.

fn try_get_i16(&mut self) -> Result<i16, TryGetError>

Gets a signed 16 bit integer from self in big-endian byte order.

fn try_get_i16_le(&mut self) -> Result<i16, TryGetError>

Gets an signed 16 bit integer from self in little-endian byte order.

fn try_get_i16_ne(&mut self) -> Result<i16, TryGetError>

Gets a signed 16 bit integer from self in native-endian byte order.

fn try_get_u32(&mut self) -> Result<u32, TryGetError>

Gets an unsigned 32 bit integer from self in big-endian byte order.

fn try_get_u32_le(&mut self) -> Result<u32, TryGetError>

Gets an unsigned 32 bit integer from self in little-endian byte order.

fn try_get_u32_ne(&mut self) -> Result<u32, TryGetError>

Gets an unsigned 32 bit integer from self in native-endian byte order.

fn try_get_i32(&mut self) -> Result<i32, TryGetError>

Gets a signed 32 bit integer from self in big-endian byte order.

fn try_get_i32_le(&mut self) -> Result<i32, TryGetError>

Gets a signed 32 bit integer from self in little-endian byte order.

fn try_get_i32_ne(&mut self) -> Result<i32, TryGetError>

Gets a signed 32 bit integer from self in native-endian byte order.

fn try_get_u64(&mut self) -> Result<u64, TryGetError>

Gets an unsigned 64 bit integer from self in big-endian byte order.

fn try_get_u64_le(&mut self) -> Result<u64, TryGetError>

Gets an unsigned 64 bit integer from self in little-endian byte order.

fn try_get_u64_ne(&mut self) -> Result<u64, TryGetError>

Gets an unsigned 64 bit integer from self in native-endian byte order.

fn try_get_i64(&mut self) -> Result<i64, TryGetError>

Gets a signed 64 bit integer from self in big-endian byte order.

fn try_get_i64_le(&mut self) -> Result<i64, TryGetError>

Gets a signed 64 bit integer from self in little-endian byte order.

fn try_get_i64_ne(&mut self) -> Result<i64, TryGetError>

Gets a signed 64 bit integer from self in native-endian byte order.

fn try_get_u128(&mut self) -> Result<u128, TryGetError>

Gets an unsigned 128 bit integer from self in big-endian byte order.

fn try_get_u128_le(&mut self) -> Result<u128, TryGetError>

Gets an unsigned 128 bit integer from self in little-endian byte order.

fn try_get_u128_ne(&mut self) -> Result<u128, TryGetError>

Gets an unsigned 128 bit integer from self in native-endian byte order.

fn try_get_i128(&mut self) -> Result<i128, TryGetError>

Gets a signed 128 bit integer from self in big-endian byte order.

fn try_get_i128_le(&mut self) -> Result<i128, TryGetError>

Gets a signed 128 bit integer from self in little-endian byte order.

fn try_get_i128_ne(&mut self) -> Result<i128, TryGetError>

Gets a signed 128 bit integer from self in native-endian byte order.

fn try_get_uint(&mut self, nbytes: usize) -> Result<u64, TryGetError>

Gets an unsigned n-byte integer from self in big-endian byte order.

fn try_get_uint_le(&mut self, nbytes: usize) -> Result<u64, TryGetError>

Gets an unsigned n-byte integer from self in little-endian byte order.

fn try_get_uint_ne(&mut self, nbytes: usize) -> Result<u64, TryGetError>

Gets an unsigned n-byte integer from self in native-endian byte order.

fn try_get_int(&mut self, nbytes: usize) -> Result<i64, TryGetError>

Gets a signed n-byte integer from self in big-endian byte order.

fn try_get_int_le(&mut self, nbytes: usize) -> Result<i64, TryGetError>

Gets a signed n-byte integer from self in little-endian byte order.

fn try_get_int_ne(&mut self, nbytes: usize) -> Result<i64, TryGetError>

Gets a signed n-byte integer from self in native-endian byte order.

fn try_get_f32(&mut self) -> Result<f32, TryGetError>

Gets an IEEE754 single-precision (4 bytes) floating point number from self in big-endian byte order.

fn try_get_f32_le(&mut self) -> Result<f32, TryGetError>

Gets an IEEE754 single-precision (4 bytes) floating point number from self in little-endian byte order.

fn try_get_f32_ne(&mut self) -> Result<f32, TryGetError>

Gets an IEEE754 single-precision (4 bytes) floating point number from self in native-endian byte order.

fn try_get_f64(&mut self) -> Result<f64, TryGetError>

Gets an IEEE754 double-precision (8 bytes) floating point number from self in big-endian byte order.

fn try_get_f64_le(&mut self) -> Result<f64, TryGetError>

Gets an IEEE754 double-precision (8 bytes) floating point number from self in little-endian byte order.

fn try_get_f64_ne(&mut self) -> Result<f64, TryGetError>

Gets an IEEE754 double-precision (8 bytes) floating point number from self in native-endian byte order.

fn copy_to_bytes(&mut self, len: usize) -> Bytes

Consumes len bytes inside self and returns new instance of Bytes with this data.

fn take(self, limit: usize) -> Take<Self>

where Self: Sized,

Creates an adaptor which will read at most limit bytes from self.

fn chain<U>(self, next: U) -> Chain<Self, U>

where U: Buf, Self: Sized,

Creates an adaptor which will chain this buffer with another.

fn reader(self) -> Reader<Self>

where Self: Sized,

Available on crate feature std only.

Creates an adaptor which implements the Read trait for self.

impl<T> BufMut for Box<T>

where T: BufMut + ?Sized,

fn remaining_mut(&self) -> usize

Returns the number of bytes that can be written from the current position until the end of the buffer is reached.

fn chunk_mut(&mut self) -> &mut UninitSlice

Returns a mutable slice starting at the current BufMut position and of length between 0 and BufMut::remaining_mut(). Note that this can be shorter than the whole remainder of the buffer (this allows non-continuous implementation).

unsafe fn advance_mut(&mut self, cnt: usize)

Advance the internal cursor of the BufMut

fn put_slice(&mut self, src: &[u8])

Transfer bytes into self from src and advance the cursor by the number of bytes written.

fn put_u8(&mut self, n: u8)

Writes an unsigned 8 bit integer to self.

fn put_i8(&mut self, n: i8)

Writes a signed 8 bit integer to self.

fn put_u16(&mut self, n: u16)

Writes an unsigned 16 bit integer to self in big-endian byte order.

fn put_u16_le(&mut self, n: u16)

Writes an unsigned 16 bit integer to self in little-endian byte order.

fn put_u16_ne(&mut self, n: u16)

Writes an unsigned 16 bit integer to self in native-endian byte order.

fn put_i16(&mut self, n: i16)

Writes a signed 16 bit integer to self in big-endian byte order.

fn put_i16_le(&mut self, n: i16)

Writes a signed 16 bit integer to self in little-endian byte order.

fn put_i16_ne(&mut self, n: i16)

Writes a signed 16 bit integer to self in native-endian byte order.

fn put_u32(&mut self, n: u32)

Writes an unsigned 32 bit integer to self in big-endian byte order.

fn put_u32_le(&mut self, n: u32)

Writes an unsigned 32 bit integer to self in little-endian byte order.

fn put_u32_ne(&mut self, n: u32)

Writes an unsigned 32 bit integer to self in native-endian byte order.

fn put_i32(&mut self, n: i32)

Writes a signed 32 bit integer to self in big-endian byte order.

fn put_i32_le(&mut self, n: i32)

Writes a signed 32 bit integer to self in little-endian byte order.

fn put_i32_ne(&mut self, n: i32)

Writes a signed 32 bit integer to self in native-endian byte order.

fn put_u64(&mut self, n: u64)

Writes an unsigned 64 bit integer to self in the big-endian byte order.

fn put_u64_le(&mut self, n: u64)

Writes an unsigned 64 bit integer to self in little-endian byte order.

fn put_u64_ne(&mut self, n: u64)

Writes an unsigned 64 bit integer to self in native-endian byte order.

fn put_i64(&mut self, n: i64)

Writes a signed 64 bit integer to self in the big-endian byte order.

fn put_i64_le(&mut self, n: i64)

Writes a signed 64 bit integer to self in little-endian byte order.

fn put_i64_ne(&mut self, n: i64)

Writes a signed 64 bit integer to self in native-endian byte order.

fn has_remaining_mut(&self) -> bool

Returns true if there is space in self for more bytes.

fn put<T>(&mut self, src: T)

where T: Buf, Self: Sized,

Transfer bytes into self from src and advance the cursor by the number of bytes written.

fn put_bytes(&mut self, val: u8, cnt: usize)

Put cnt bytes val into self.

fn put_u128(&mut self, n: u128)

Writes an unsigned 128 bit integer to self in the big-endian byte order.

fn put_u128_le(&mut self, n: u128)

Writes an unsigned 128 bit integer to self in little-endian byte order.

fn put_u128_ne(&mut self, n: u128)

Writes an unsigned 128 bit integer to self in native-endian byte order.

fn put_i128(&mut self, n: i128)

Writes a signed 128 bit integer to self in the big-endian byte order.

fn put_i128_le(&mut self, n: i128)

Writes a signed 128 bit integer to self in little-endian byte order.

fn put_i128_ne(&mut self, n: i128)

Writes a signed 128 bit integer to self in native-endian byte order.

fn put_uint(&mut self, n: u64, nbytes: usize)

Writes an unsigned n-byte integer to self in big-endian byte order.

fn put_uint_le(&mut self, n: u64, nbytes: usize)

Writes an unsigned n-byte integer to self in the little-endian byte order.

fn put_uint_ne(&mut self, n: u64, nbytes: usize)

Writes an unsigned n-byte integer to self in the native-endian byte order.

fn put_int(&mut self, n: i64, nbytes: usize)

Writes low nbytes of a signed integer to self in big-endian byte order.

fn put_int_le(&mut self, n: i64, nbytes: usize)

Writes low nbytes of a signed integer to self in little-endian byte order.

fn put_int_ne(&mut self, n: i64, nbytes: usize)

Writes low nbytes of a signed integer to self in native-endian byte order.

fn put_f32(&mut self, n: f32)

Writes an IEEE754 single-precision (4 bytes) floating point number to self in big-endian byte order.

fn put_f32_le(&mut self, n: f32)

Writes an IEEE754 single-precision (4 bytes) floating point number to self in little-endian byte order.

fn put_f32_ne(&mut self, n: f32)

Writes an IEEE754 single-precision (4 bytes) floating point number to self in native-endian byte order.

fn put_f64(&mut self, n: f64)

Writes an IEEE754 double-precision (8 bytes) floating point number to self in big-endian byte order.

fn put_f64_le(&mut self, n: f64)

Writes an IEEE754 double-precision (8 bytes) floating point number to self in little-endian byte order.

fn put_f64_ne(&mut self, n: f64)

Writes an IEEE754 double-precision (8 bytes) floating point number to self in native-endian byte order.

fn limit(self, limit: usize) -> Limit<Self>

where Self: Sized,

Creates an adaptor which can write at most limit bytes to self.

fn writer(self) -> Writer<Self>

where Self: Sized,

Available on crate feature std only.

Creates an adaptor which implements the Write trait for self.

fn chain_mut<U>(self, next: U) -> Chain<Self, U>

where U: BufMut, Self: Sized,

Creates an adapter which will chain this buffer with another.

impl<B> BufRead for Box<B>

where B: BufRead + ?Sized,

fn fill_buf(&mut self) -> Result<&[u8], Error>

Returns the contents of the internal buffer, filling it with more data, via Read methods, if empty.

fn consume(&mut self, amt: usize)

Marks the given amount of additional bytes from the internal buffer as having been read. Subsequent calls to read only return bytes that have not been marked as read.

fn has_data_left(&mut self) -> Result<bool, Error>

🔬This is a nightly-only experimental API. (buf_read_has_data_left)

Checks if there is any data left to be read.

fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize, Error>

Reads all bytes into buf until the delimiter byte or EOF is reached.

fn skip_until(&mut self, byte: u8) -> Result<usize, Error>

Skips all bytes until the delimiter byte or EOF is reached.

fn read_line(&mut self, buf: &mut String) -> Result<usize, Error>

Reads all bytes until a newline (the 0xA byte) is reached, and append them to the provided String buffer.

fn split(self, byte: u8) -> Split<Self>

where Self: Sized,

Returns an iterator over the contents of this reader split on the byte byte.

fn lines(self) -> Lines<Self>

where Self: Sized,

Returns an iterator over the lines of this reader.

impl<T> Clear for Box<T>

where T: Clear,

fn clear(&mut self)

Clear all data in self, retaining the allocated capacithy.

impl Clone for Box<OsStr>

fn clone(&self) -> Box<OsStr>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Clone for Box<Path>

fn clone(&self) -> Box<Path>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T, A> Clone for Box<T, A>

where T: Clone, A: Allocator + Clone,

Available on non-no_global_oom_handling only.

fn clone(&self) -> Box<T, A>

Returns a new box with a clone() of this box’s contents.

Examples

let x = Box::new(5);
let y = x.clone();

// The value is the same
assert_eq!(x, y);

// But they are unique objects
assert_ne!(&*x as *const i32, &*y as *const i32);

fn clone_from(&mut self, source: &Box<T, A>)

Copies source’s contents into self without creating a new allocation.

Examples

let x = Box::new(5);
let mut y = Box::new(10);
let yp: *const i32 = &*y;

y.clone_from(&x);

// The value is the same
assert_eq!(x, y);

// And no allocation occurred
assert_eq!(yp, &*y);

impl<T, A> Clone for Box<[T], A>

where T: Clone, A: Allocator + Clone,

Available on non-no_global_oom_handling only.

fn clone_from(&mut self, source: &Box<[T], A>)

Copies source’s contents into self without creating a new allocation, so long as the two are of the same length.

Examples

let x = Box::new([5, 6, 7]);
let mut y = Box::new([8, 9, 10]);
let yp: *const [i32] = &*y;

y.clone_from(&x);

// The value is the same
assert_eq!(x, y);

// And no allocation occurred
assert_eq!(yp, &*y);

fn clone(&self) -> Box<[T], A>

Returns a duplicate of the value.

impl Clone for Box<str>

Available on non-no_global_oom_handling only.

fn clone(&self) -> Box<str>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Clone for Box<ByteStr>

fn clone(&self) -> Box<ByteStr>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Clone for Box<CStr>

fn clone(&self) -> Box<CStr>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Clone for Box<dyn ShouldSample>

fn clone(&self) -> Box<dyn ShouldSample>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<K, V> Clone for Box<Slice<K, V>>

where K: Clone, V: Clone,

fn clone(&self) -> Box<Slice<K, V>>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Clone for Box<Slice<T>>

where T: Clone,

fn clone(&self) -> Box<Slice<T>>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Clone for Box<dyn DynDigest>

Available on crate feature alloc only.

fn clone(&self) -> Box<dyn DynDigest>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Clone for Box<dyn AnyClone + Send + Sync>

fn clone(&self) -> Box<dyn AnyClone + Send + Sync>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T, U, A> CoerceUnsized<Box<U, A>> for Box<T, A>

where T: Unsize<U> + ?Sized, A: Allocator, U: ?Sized,

impl<T> ComponentType for Box<T>

where T: ComponentType + ?Sized,

impl<G, R, A> Coroutine<R> for Box<G, A>

where G: Coroutine<R> + Unpin + ?Sized, A: Allocator,

type Yield = <G as Coroutine<R>>::Yield

🔬This is a nightly-only experimental API. (coroutine_trait)

The type of value this coroutine yields.

type Return = <G as Coroutine<R>>::Return

🔬This is a nightly-only experimental API. (coroutine_trait)

The type of value this coroutine returns.

fn resume( self: Pin<&mut Box<G, A>>, arg: R, ) -> CoroutineState<<Box<G, A> as Coroutine<R>>::Yield, <Box<G, A> as Coroutine<R>>::Return>

🔬This is a nightly-only experimental API. (coroutine_trait)

Resumes the execution of this coroutine.

impl<G, R, A> Coroutine<R> for Pin<Box<G, A>>

where G: Coroutine<R> + ?Sized, A: Allocator + 'static,

type Yield = <G as Coroutine<R>>::Yield

🔬This is a nightly-only experimental API. (coroutine_trait)

The type of value this coroutine yields.

type Return = <G as Coroutine<R>>::Return

🔬This is a nightly-only experimental API. (coroutine_trait)

The type of value this coroutine returns.

fn resume( self: Pin<&mut Pin<Box<G, A>>>, arg: R, ) -> CoroutineState<<Pin<Box<G, A>> as Coroutine<R>>::Yield, <Pin<Box<G, A>> as Coroutine<R>>::Return>

🔬This is a nightly-only experimental API. (coroutine_trait)

Resumes the execution of this coroutine.

impl DatagramCost for Box<[u8]>

fn cost(&self) -> u64

The cost of this item, in rate units.

impl<T, A> Debug for Box<T, A>

where T: Debug + ?Sized, A: Allocator,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Box<OsStr>

fn default() -> Box<OsStr>

Returns the “default value” for a type.

impl<T> Default for Box<T>

where T: Default,

Available on non-no_global_oom_handling only.

fn default() -> Box<T>

Creates a Box<T>, with the Default value for T.

impl<T> Default for Box<[T]>

Available on non-no_global_oom_handling only.

fn default() -> Box<[T]>

Creates an empty [T] inside a Box.

impl Default for Box<str>

Available on non-no_global_oom_handling only.

fn default() -> Box<str>

Returns the “default value” for a type.

impl<T> Default for Pin<Box<T>>

where Box<T>: Default, T: ?Sized,

Available on non-no_global_oom_handling only.

fn default() -> Pin<Box<T>>

Returns the “default value” for a type.

impl Default for Box<CStr>

fn default() -> Box<CStr>

Returns the “default value” for a type.

impl<K, V> Default for Box<Slice<K, V>>

fn default() -> Box<Slice<K, V>>

Returns the “default value” for a type.

impl<T> Default for Box<Slice<T>>

fn default() -> Box<Slice<T>>

Returns the “default value” for a type.

impl<T, A> Deref for Box<T, A>

where A: Allocator, T: ?Sized,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<T, A> DerefMut for Box<T, A>

where A: Allocator, T: ?Sized,

fn deref_mut(&mut self) -> &mut T

Mutably dereferences the value.

impl<T, A> DerefPure for Box<T, A>

where A: Allocator, T: ?Sized,

impl<'de> Deserialize<'de> for Box<CStr>

Available on crate feature std, or crate feature alloc and non-no_core_cstr only.

fn deserialize<D>( deserializer: D, ) -> Result<Box<CStr>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'de> Deserialize<'de> for Box<Path>

Available on crate feature std only.

fn deserialize<D>( deserializer: D, ) -> Result<Box<Path>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'de, T> Deserialize<'de> for Box<T>

where T: Deserialize<'de>,

Available on crate features alloc or std only.

fn deserialize<D>( deserializer: D, ) -> Result<Box<T>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'de, T> Deserialize<'de> for Box<[T]>

where T: Deserialize<'de>,

Available on crate features alloc or std only.

fn deserialize<D>( deserializer: D, ) -> Result<Box<[T]>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'de> Deserialize<'de> for Box<str>

Available on crate features alloc or std only.

fn deserialize<D>( deserializer: D, ) -> Result<Box<str>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'de> Deserialize<'de> for Box<OsStr>

Available on crate feature std and (Unix or Windows) only.

fn deserialize<D>( deserializer: D, ) -> Result<Box<OsStr>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T, U> DispatchFromDyn<Box<U>> for Box<T>

where T: Unsize<U> + ?Sized, U: ?Sized,

impl<T, A> Display for Box<T, A>

where T: Display + ?Sized, A: Allocator,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> DnsIpPicker for Box<T>

where T: DnsIpPicker,

fn pick( &self, host: &Domain, resolution: &HostResolution, ) -> Result<Option<IpAddr>, Box<dyn Error + Send + Sync>>

Pick one address from resolution.

impl<I, A> DoubleEndedIterator for Box<I, A>

where I: DoubleEndedIterator + ?Sized, A: Allocator,

fn next_back(&mut self) -> Option<<I as Iterator>::Item>

Removes and returns an element from the end of the iterator.

fn nth_back(&mut self, n: usize) -> Option<<I as Iterator>::Item>

Returns the nth element from the end of the iterator.

fn next_chunk_back<const N: usize>( &mut self, ) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>

where Self: Sized,

🔬This is a nightly-only experimental API. (iter_next_chunk)

Advances from the back of the iterator and returns an array containing the next N values in sequence.

fn advance_back_by(&mut self, n: usize) -> Result<(), NonZero<usize>>

🔬This is a nightly-only experimental API. (iter_advance_by)

Advances the iterator from the back by n elements.

fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R

where Self: Sized, F: FnMut(B, Self::Item) -> R, R: Try<Output = B>,

This is the reverse version of Iterator::try_fold(): it takes elements starting from the back of the iterator.

fn rfold<B, F>(self, init: B, f: F) -> B

where Self: Sized, F: FnMut(B, Self::Item) -> B,

An iterator method that reduces the iterator’s elements to a single, final value, starting from the back.

fn rfind<P>(&mut self, predicate: P) -> Option<Self::Item>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Searches for an element of an iterator from the back that satisfies a predicate.

impl<T, A> Drop for Box<T, A>

where A: Allocator, T: ?Sized,

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl<T> Entry for Box<T>

where T: Entry + ?Sized,

fn write<'a>(&'a self, writer: &mut impl EntryWriter<'a>)

Write the metric values contained in this entry to the format-provided [EntryWriter]. The writer corresponds to an atomic entry written to the metrics consumer, like CloudWatch.

fn sample_group( &self, ) -> impl Iterator<Item = (Cow<'static, str>, Cow<'static, str>)>

The key used to group “similar” entries when sampling. Defaults to the empty group.

fn descriptors(&self) -> Descriptors<'_>

Available on non-metrique_require_explicit_impls only.

Returns descriptors for this entry in write order.

fn merge<E>(self, other: E) -> Merged<Self, E>

where Self: Sized,

Create a new entry that writes all the contents of this entry and then all of the contents of other.

fn merge_by_ref<'a, E>(&'a self, other: &'a E) -> MergedRef<'a, Self, E>

where E: 'a + Entry,

Like [Entry::merge], but does so by reference.

fn boxed(self) -> BoxEntry

where Self: Sized + Send + 'static,

Move the entry to the heap and rely on dynamic dispatch.

impl<T, A> Eq for Box<T, A>

where T: Eq + ?Sized, A: Allocator,

impl<E> Error for Box<E>

where E: Error,

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn provide<'b>(&'b self, request: &mut Request<'b>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

impl<I, A> ExactSizeIterator for Box<I, A>

where I: ExactSizeIterator + ?Sized, A: Allocator,

fn len(&self) -> usize

Returns the exact remaining length of the iterator.

fn is_empty(&self) -> bool

🔬This is a nightly-only experimental API. (exact_size_is_empty)

Returns true if the iterator is empty.

impl<A> Extend<Box<str, A>> for String

where A: Allocator,

Available on non-no_global_oom_handling only.

fn extend<I>(&mut self, iter: I)

where I: IntoIterator<Item = Box<str, A>>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<T> ExtensionsRef for Box<T>

where T: ExtensionsRef,

fn extensions(&self) -> &Extensions

Get reference to the underlying Extensions store

impl<T> ExtensionsRef for Pin<Box<T>>

where T: ExtensionsRef,

fn extensions(&self) -> &Extensions

Get reference to the underlying Extensions store

impl<S> Filter<S> for Box<dyn Filter<S> + Send + Sync>

Available on crate feature registry only.

fn enabled(&self, meta: &Metadata<'_>, cx: &Context<'_, S>) -> bool

Returns true if this layer is interested in a span or event with the given Metadata in the current [Context], similarly to Subscriber::enabled.

fn callsite_enabled(&self, meta: &'static Metadata<'static>) -> Interest

Returns an Interest indicating whether this layer will always, sometimes, or never be interested in the given Metadata.

fn max_level_hint(&self) -> Option<LevelFilter>

Returns an optional hint of the highest verbosity level that this Filter will enable.

fn event_enabled(&self, event: &Event<'_>, cx: &Context<'_, S>) -> bool

Called before the filtered [Layer]'s [on_event], to determine if on_event` should be called.

fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)

Notifies this filter that a new span was constructed with the given Attributes and Id.

fn on_record(&self, id: &Id, values: &Record<'_>, ctx: Context<'_, S>)

Notifies this filter that a span with the given Id recorded the given values.

fn on_enter(&self, id: &Id, ctx: Context<'_, S>)

Notifies this filter that a span with the given ID was entered.

fn on_exit(&self, id: &Id, ctx: Context<'_, S>)

Notifies this filter that a span with the given ID was exited.

fn on_close(&self, id: Id, ctx: Context<'_, S>)

Notifies this filter that a span with the given ID has been closed.

impl<Args, F, A> Fn<Args> for Box<F, A>

where Args: Tuple, F: Fn<Args> + ?Sized, A: Allocator,

extern "rust-call" fn call( &self, args: Args, ) -> <Box<F, A> as FnOnce<Args>>::Output

🔬This is a nightly-only experimental API. (fn_traits)

Performs the call operation.

impl<Args, F, A> FnMut<Args> for Box<F, A>

where Args: Tuple, F: FnMut<Args> + ?Sized, A: Allocator,

extern "rust-call" fn call_mut( &mut self, args: Args, ) -> <Box<F, A> as FnOnce<Args>>::Output

🔬This is a nightly-only experimental API. (fn_traits)

Performs the call operation.

impl<Args, F, A> FnOnce<Args> for Box<F, A>

where Args: Tuple, F: FnOnce<Args> + ?Sized, A: Allocator,

type Output = <F as FnOnce<Args>>::Output

The returned type after the call operator is used.

extern "rust-call" fn call_once( self, args: Args, ) -> <Box<F, A> as FnOnce<Args>>::Output

🔬This is a nightly-only experimental API. (fn_traits)

Performs the call operation.

impl From<&Box<dyn Error + Send + Sync>> for ReplyKind

fn from(err: &Box<dyn Error + Send + Sync>) -> ReplyKind

Converts to this type from the input type.

impl From<&CStr> for Box<CStr>

fn from(s: &CStr) -> Box<CStr>

Converts a &CStr into a Box<CStr>, by copying the contents into a newly allocated Box.

impl From<&OsStr> for Box<OsStr>

fn from(s: &OsStr) -> Box<OsStr>

Copies the string into a newly allocated Box<OsStr>.

impl From<&Path> for Box<Path>

fn from(path: &Path) -> Box<Path>

Creates a boxed Path from a reference.

This will allocate and clone path to it.

impl<S> From<&RiAbsoluteStr<S>> for Box<RiAbsoluteStr<S>>

where S: Spec,

Available on crate feature alloc only.

fn from(s: &RiAbsoluteStr<S>) -> Box<RiAbsoluteStr<S>>

Converts to this type from the input type.

impl<S> From<&RiFragmentStr<S>> for Box<RiFragmentStr<S>>

where S: Spec,

Available on crate feature alloc only.

fn from(s: &RiFragmentStr<S>) -> Box<RiFragmentStr<S>>

Converts to this type from the input type.

impl<S> From<&RiQueryStr<S>> for Box<RiQueryStr<S>>

where S: Spec,

Available on crate feature alloc only.

fn from(s: &RiQueryStr<S>) -> Box<RiQueryStr<S>>

Converts to this type from the input type.

impl<S> From<&RiReferenceStr<S>> for Box<RiReferenceStr<S>>

where S: Spec,

Available on crate feature alloc only.

fn from(s: &RiReferenceStr<S>) -> Box<RiReferenceStr<S>>

Converts to this type from the input type.

impl<S> From<&RiRelativeStr<S>> for Box<RiRelativeStr<S>>

where S: Spec,

Available on crate feature alloc only.

fn from(s: &RiRelativeStr<S>) -> Box<RiRelativeStr<S>>

Converts to this type from the input type.

impl<S> From<&RiStr<S>> for Box<RiStr<S>>

where S: Spec,

Available on crate feature alloc only.

fn from(s: &RiStr<S>) -> Box<RiStr<S>>

Converts to this type from the input type.

impl<K, V> From<&Slice<K, V>> for Box<Slice<K, V>>

where K: Copy, V: Copy,

fn from(slice: &Slice<K, V>) -> Box<Slice<K, V>>

Converts to this type from the input type.

impl<T> From<&Slice<T>> for Box<Slice<T>>

where T: Copy,

fn from(slice: &Slice<T>) -> Box<Slice<T>>

Converts to this type from the input type.

impl From<&UriTemplateStr> for Box<UriTemplateStr>

Available on crate feature alloc only.

fn from(s: &UriTemplateStr) -> Box<UriTemplateStr>

Converts to this type from the input type.

impl<T> From<&[T]> for Box<[T]>

where T: Clone,

Available on non-no_global_oom_handling only.

fn from(slice: &[T]) -> Box<[T]>

Converts a &[T] into a Box<[T]>

This conversion allocates on the heap and performs a copy of slice and its contents.

Examples

// create a &[u8] which will be used to create a Box<[u8]>
let slice: &[u8] = &[104, 101, 108, 108, 111];
let boxed_slice: Box<[u8]> = Box::from(slice);

println!("{boxed_slice:?}");

impl From<&mut CStr> for Box<CStr>

fn from(s: &mut CStr) -> Box<CStr>

Converts a &mut CStr into a Box<CStr>, by copying the contents into a newly allocated Box.

impl From<&mut OsStr> for Box<OsStr>

fn from(s: &mut OsStr) -> Box<OsStr>

Copies the string into a newly allocated Box<OsStr>.

impl From<&mut Path> for Box<Path>

fn from(path: &mut Path) -> Box<Path>

Creates a boxed Path from a reference.

This will allocate and clone path to it.

impl<T> From<&mut [T]> for Box<[T]>

where T: Clone,

Available on non-no_global_oom_handling only.

fn from(slice: &mut [T]) -> 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

// 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:?}");

impl From<&mut str> for Box<str>

Available on non-no_global_oom_handling only.

fn from(s: &mut str) -> Box<str>

Converts a &mut str into a Box<str>

This conversion allocates on the heap and performs a copy of s.

Examples

let mut original = String::from("hello");
let original: &mut str = &mut original;
let boxed: Box<str> = Box::from(original);
println!("{boxed}");

impl From<&str> for Box<str>

Available on non-no_global_oom_handling only.

fn from(s: &str) -> Box<str>

Converts a &str into a Box<str>

This conversion allocates on the heap and performs a copy of s.

Examples

let boxed: Box<str> = Box::from("hello");
println!("{boxed}");

impl<'a> From<&str> for Box<dyn Error + Send + Sync + 'a>

Available on non-no_global_oom_handling only.

fn from(err: &str) -> Box<dyn Error + Send + Sync + 'a>

Converts a str into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;

let a_str_error = "a str error";
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_str_error);
assert!(
    size_of::<Box<dyn Error + Send + Sync>>() == size_of_val(&a_boxed_error))

impl<'a> From<&str> for Box<dyn Error + 'a>

Available on non-no_global_oom_handling only.

fn from(err: &str) -> Box<dyn Error + 'a>

Converts a str into a box of dyn Error.

Examples

use std::error::Error;

let a_str_error = "a str error";
let a_boxed_error = Box::<dyn Error>::from(a_str_error);
assert!(size_of::<Box<dyn Error>>() == size_of_val(&a_boxed_error))

impl From<ArcStr> for Box<str>

fn from(s: ArcStr) -> Box<str>

Converts to this type from the input type.

impl From<Box<ByteStr>> for Box<[u8]>

fn from(s: Box<ByteStr>) -> Box<[u8]>

Converts to this type from the input type.

impl From<Box<CStr>> for CString

fn from(s: Box<CStr>) -> CString

Converts a Box<CStr> into a CString without copying or allocating.

impl<'a, F> From<Box<F>> for FutureObj<'a, ()>

where F: Future<Output = ()> + Send + 'a,

fn from(boxed: Box<F>) -> FutureObj<'a, ()>

Converts to this type from the input type.

impl<'a, F> From<Box<F>> for LocalFutureObj<'a, ()>

where F: Future<Output = ()> + 'a,

fn from(boxed: Box<F>) -> LocalFutureObj<'a, ()>

Converts to this type from the input type.

impl From<Box<OsStr>> for OsString

fn from(boxed: Box<OsStr>) -> OsString

Converts a Box<OsStr> into an OsString without copying or allocating.

impl From<Box<Path>> for PathBuf

fn from(boxed: Box<Path>) -> PathBuf

Converts a Box<Path> into a PathBuf.

This conversion does not allocate or copy memory.

impl<T, A> From<Box<T, A>> for Pin<Box<T, A>>

where A: Allocator + 'static, T: ?Sized,

fn from(boxed: Box<T, A>) -> Pin<Box<T, A>>

Converts a Box<T> into a Pin<Box<T>>. If T does not implement Unpin, then *boxed will be pinned in memory and unable to be moved.

This conversion does not allocate on the heap and happens in place.

This is also available via Box::into_pin.

Constructing and pinning a Box with <Pin<Box<T>>>::from(Box::new(x)) can also be written more concisely using Box::pin(x). This From implementation is useful if you already have a Box<T>, or you are constructing a (pinned) Box in a different way than with Box::new.

impl<T, A> From<Box<T, A>> for Rc<T, A>

where A: Allocator, T: ?Sized,

Available on non-no_global_oom_handling only.

fn from(v: Box<T, A>) -> Rc<T, A>

Move a boxed object to a new, reference counted, allocation.

Example

let original: Box<i32> = Box::new(1);
let shared: Rc<i32> = Rc::from(original);
assert_eq!(1, *shared);

impl<T, A> From<Box<T, A>> for Arc<T, A>

where A: Allocator, T: ?Sized,

Available on non-no_global_oom_handling only.

fn from(v: Box<T, A>) -> Arc<T, A>

Move a boxed object to a new, reference-counted allocation.

Example

let unique: Box<str> = Box::from("eggplant");
let shared: Arc<str> = Arc::from(unique);
assert_eq!("eggplant", &shared[..]);

impl<T> From<Box<T>> for Atomic<T>

fn from(b: Box<T>) -> Atomic<T>

Converts to this type from the input type.

impl<T> From<Box<T>> for Owned<T>

fn from(b: Box<T>) -> Owned<T>

Returns a new owned pointer pointing to b.

Panics

Panics if the pointer (the Box) is not properly aligned.

Examples

use crossbeam_epoch::Owned;

let o = unsafe { Owned::from_raw(Box::into_raw(Box::new(1234))) };

impl<'a> From<Box<[Item<'a>]>> for OwnedFormatItem

fn from(items: Box<[Item<'a>]>) -> OwnedFormatItem

Converts to this type from the input type.

impl From<Box<[ProxyRoute]>> for ProxyRoutes

fn from(value: Box<[ProxyRoute]>) -> ProxyRoutes

Converts to this type from the input type.

impl<T, A> From<Box<[T], A>> for Vec<T, A>

where A: Allocator,

fn from(s: Box<[T], A>) -> Vec<T, A>

Converts a boxed slice into a vector by transferring ownership of the existing heap allocation.

Examples

let b: Box<[i32]> = vec![1, 2, 3].into_boxed_slice();
assert_eq!(Vec::from(b), vec![1, 2, 3]);

impl<T> From<Box<[T]>> for MaybeStaticSlice<T>

where T: 'static,

Available on crate feature alloc only.

fn from(data: Box<[T]>) -> MaybeStaticSlice<T>

Converts to this type from the input type.

impl<T> From<Box<[T]>> for TryVec<T>

fn from(boxed_slice: Box<[T]>) -> TryVec<T>

Converts to this type from the input type.

impl From<Box<[u8]>> for Box<ByteStr>

fn from(s: Box<[u8]>) -> Box<ByteStr>

Converts to this type from the input type.

impl From<Box<[u8]>> for Bytes

fn from(slice: Box<[u8]>) -> Bytes

Converts to this type from the input type.

impl From<Box<dyn Error + Send + Sync>> for TrySendError

fn from(source: Box<dyn Error + Send + Sync>) -> TrySendError

Converts to this type from the input type.

impl From<Box<dyn Error + Send + Sync>> for ParseError

Available on crate feature std only.

fn from(e: Box<dyn Error + Send + Sync>) -> ParseError

Converts to this type from the input type.

impl From<Box<dyn Error + Send + Sync>> for ConnectionError

fn from(source: Box<dyn Error + Send + Sync>) -> ConnectionError

Converts to this type from the input type.

impl From<Box<dyn Error + Send + Sync>> for ClientError

fn from(value: Box<dyn Error + Send + Sync>) -> ClientError

Converts to this type from the input type.

impl From<Box<dyn Error + Send + Sync>> for ProtocolError

fn from(value: Box<dyn Error + Send + Sync>) -> ProtocolError

Converts to this type from the input type.

impl From<Box<dyn Error + Send + Sync>> for ProtocolError

fn from(value: Box<dyn Error + Send + Sync>) -> ProtocolError

Converts to this type from the input type.

impl<'a> From<Box<dyn Future<Output = ()> + 'a>> for LocalFutureObj<'a, ()>

fn from(boxed: Box<dyn Future<Output = ()> + 'a>) -> LocalFutureObj<'a, ()>

Converts to this type from the input type.

impl<'a> From<Box<dyn Future<Output = ()> + Send + 'a>> for FutureObj<'a, ()>

fn from(boxed: Box<dyn Future<Output = ()> + Send + 'a>) -> FutureObj<'a, ()>

Converts to this type from the input type.

impl<A> From<Box<str, A>> for Box<[u8], A>

where A: Allocator,

fn from(s: Box<str, A>) -> Box<[u8], A>

Converts a Box<str> into a Box<[u8]>

This conversion does not allocate on the heap and happens in place.

Examples

// create a Box<str> which will be used to create a Box<[u8]>
let boxed: Box<str> = Box::from("hello");
let boxed_str: Box<[u8]> = Box::from(boxed);

// create a &[u8] which will be used to create a Box<[u8]>
let slice: &[u8] = &[104, 101, 108, 108, 111];
let boxed_slice = Box::from(slice);

assert_eq!(boxed_slice, boxed_str);

impl From<Box<str>> for String

fn from(s: Box<str>) -> String

Converts the given boxed str slice to a String. It is notable that the str slice is owned.

Examples

let s1: String = String::from("hello world");
let s2: Box<str> = s1.into_boxed_str();
let s3: String = String::from(s2);

assert_eq!("hello world", s3)

impl From<Box<str>> for ArcStr

fn from(s: Box<str>) -> ArcStr

Converts to this type from the input type.

impl From<Box<str>> for Substr

fn from(v: Box<str>) -> Substr

Converts to this type from the input type.

impl From<Box<str>> for SmolStr

fn from(s: Box<str>) -> SmolStr

Converts to this type from the input type.

impl<const ARRAY_CAPACITY_MAX: usize> From<Box<str>> for SmallStr<ARRAY_CAPACITY_MAX>

Available on crate feature alloc only.

Return a SmallStr that is guaranteed to live on the heap.

fn from(s: Box<str>) -> SmallStr<ARRAY_CAPACITY_MAX>

Converts to this type from the input type.

impl From<Box<str>> for RawString

fn from(s: Box<str>) -> RawString

Converts to this type from the input type.

impl From<CString> for Box<CStr>

fn from(s: CString) -> Box<CStr>

Converts a CString into a Box<CStr> without copying or allocating.

impl From<Cow<'_, CStr>> for Box<CStr>

fn from(cow: Cow<'_, CStr>) -> Box<CStr>

Converts a Cow<'a, CStr> into a Box<CStr>, by copying the contents if they are borrowed.

impl From<Cow<'_, OsStr>> for Box<OsStr>

fn from(cow: Cow<'_, OsStr>) -> Box<OsStr>

Converts a Cow<'a, OsStr> into a Box<OsStr>, by copying the contents if they are borrowed.

impl From<Cow<'_, Path>> for Box<Path>

fn from(cow: Cow<'_, Path>) -> Box<Path>

Creates a boxed Path from a clone-on-write pointer.

Converting from a Cow::Owned does not clone or allocate.

impl<T> From<Cow<'_, [T]>> for Box<[T]>

where T: Clone,

Available on non-no_global_oom_handling only.

fn from(cow: Cow<'_, [T]>) -> Box<[T]>

Converts a Cow<'_, [T]> into a Box<[T]>

When cow is the Cow::Borrowed variant, this conversion allocates on the heap and copies the underlying slice. Otherwise, it will try to reuse the owned Vec’s allocation.

impl From<Cow<'_, str>> for Box<str>

Available on non-no_global_oom_handling only.

fn from(cow: Cow<'_, str>) -> Box<str>

Converts a Cow<'_, str> into a Box<str>

When cow is the Cow::Borrowed variant, this conversion allocates on the heap and copies the underlying str. Otherwise, it will try to reuse the owned String’s allocation.

Examples

use std::borrow::Cow;

let unboxed = Cow::Borrowed("hello");
let boxed: Box<str> = Box::from(unboxed);
println!("{boxed}");

let unboxed = Cow::Owned("hello".to_string());
let boxed: Box<str> = Box::from(unboxed);
println!("{boxed}");

impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + Send + Sync + 'a>

Available on non-no_global_oom_handling only.

fn from(err: Cow<'b, str>) -> Box<dyn Error + Send + Sync + 'a>

Converts a Cow into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;
use std::borrow::Cow;

let a_cow_str_error = Cow::from("a str error");
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_cow_str_error);
assert!(
    size_of::<Box<dyn Error + Send + Sync>>() == size_of_val(&a_boxed_error))

impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + 'a>

Available on non-no_global_oom_handling only.

fn from(err: Cow<'b, str>) -> Box<dyn Error + 'a>

Converts a Cow into a box of dyn Error.

Examples

use std::error::Error;
use std::borrow::Cow;

let a_cow_str_error = Cow::from("a str error");
let a_boxed_error = Box::<dyn Error>::from(a_cow_str_error);
assert!(size_of::<Box<dyn Error>>() == size_of_val(&a_boxed_error))

impl<'a, E> From<E> for Box<dyn Error + 'a>

where E: Error + 'a,

Available on non-no_global_oom_handling only.

fn from(err: E) -> Box<dyn Error + 'a>

Converts a type of Error into a box of dyn Error.

Examples

use std::error::Error;
use std::fmt;

#[derive(Debug)]
struct AnError;

impl fmt::Display for AnError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "An error")
    }
}

impl Error for AnError {}

let an_error = AnError;
assert!(0 == size_of_val(&an_error));
let a_boxed_error = Box::<dyn Error>::from(an_error);
assert!(size_of::<Box<dyn Error>>() == size_of_val(&a_boxed_error))

impl<'a, E> From<E> for Box<dyn Error + Send + Sync + 'a>

where E: Error + Send + Sync + 'a,

Available on non-no_global_oom_handling only.

fn from(err: E) -> Box<dyn Error + Send + Sync + 'a>

Converts a type of Error + Send + Sync into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;
use std::fmt;

#[derive(Debug)]
struct AnError;

impl fmt::Display for AnError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "An error")
    }
}

impl Error for AnError {}

unsafe impl Send for AnError {}

unsafe impl Sync for AnError {}

let an_error = AnError;
assert!(0 == size_of_val(&an_error));
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(an_error);
assert!(
    size_of::<Box<dyn Error + Send + Sync>>() == size_of_val(&a_boxed_error))

impl From<Error> for Box<dyn Error + Send + Sync>

fn from(error: Error) -> Box<dyn Error + Send + Sync>

Converts to this type from the input type.

impl From<Error> for Box<dyn Error + Send>

fn from(error: Error) -> Box<dyn Error + Send>

Converts to this type from the input type.

impl From<Error> for Box<dyn Error>

fn from(error: Error) -> Box<dyn Error>

Converts to this type from the input type.

impl From<Error> for Box<dyn Error + Send + Sync>

Available on crate feature std or non-anyhow_no_core_error only.

fn from(error: Error) -> Box<dyn Error + Send + Sync>

Converts to this type from the input type.

impl From<Error> for Box<dyn Error + Send>

Available on crate feature std or non-anyhow_no_core_error only.

fn from(error: Error) -> Box<dyn Error + Send>

Converts to this type from the input type.

impl From<Error> for Box<dyn Error>

Available on crate feature std or non-anyhow_no_core_error only.

fn from(error: Error) -> Box<dyn Error>

Converts to this type from the input type.

impl From<OsString> for Box<OsStr>

fn from(s: OsString) -> Box<OsStr>

Converts an OsString into a Box<OsStr> without copying or allocating.

impl From<PanicMessage> for Box<dyn Any + Send>

fn from(val: PanicMessage) -> Box<dyn Any + Send>

Converts to this type from the input type.

impl From<PathBuf> for Box<Path>

fn from(p: PathBuf) -> Box<Path>

Converts a PathBuf into a Box<Path>.

This conversion currently should not allocate memory, but this behavior is not guaranteed on all platforms or in all future versions.

impl<'a, F> From<Pin<Box<F>>> for FutureObj<'a, ()>

where F: Future<Output = ()> + Send + 'a,

fn from(boxed: Pin<Box<F>>) -> FutureObj<'a, ()>

Converts to this type from the input type.

impl<'a, F> From<Pin<Box<F>>> for LocalFutureObj<'a, ()>

where F: Future<Output = ()> + 'a,

fn from(boxed: Pin<Box<F>>) -> LocalFutureObj<'a, ()>

Converts to this type from the input type.

impl<F> From<Pin<Box<F>>> for DnsResponseStream

where F: Future<Output = Result<DnsResponse, NetError>> + Send + 'static,

fn from(f: Pin<Box<F>>) -> DnsResponseStream

Converts to this type from the input type.

impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a>>> for LocalFutureObj<'a, ()>

fn from(boxed: Pin<Box<dyn Future<Output = ()> + 'a>>) -> LocalFutureObj<'a, ()>

Converts to this type from the input type.

impl<'a> From<Pin<Box<dyn Future<Output = ()> + Send + 'a>>> for FutureObj<'a, ()>

fn from( boxed: Pin<Box<dyn Future<Output = ()> + Send + 'a>>, ) -> FutureObj<'a, ()>

Converts to this type from the input type.

impl From<Pin<Box<dyn Future<Output = Result<Result<DnsResponse, NetError>, Error>> + Send>>> for DnsResponseStream

fn from( f: Pin<Box<dyn Future<Output = Result<Result<DnsResponse, NetError>, Error>> + Send>>, ) -> DnsResponseStream

Converts to this type from the input type.

impl<S> From<RiAbsoluteString<S>> for Box<RiAbsoluteStr<S>>

where S: Spec,

fn from(s: RiAbsoluteString<S>) -> Box<RiAbsoluteStr<S>>

Converts to this type from the input type.

impl<S> From<RiFragmentString<S>> for Box<RiFragmentStr<S>>

where S: Spec,

fn from(s: RiFragmentString<S>) -> Box<RiFragmentStr<S>>

Converts to this type from the input type.

impl<S> From<RiQueryString<S>> for Box<RiQueryStr<S>>

where S: Spec,

fn from(s: RiQueryString<S>) -> Box<RiQueryStr<S>>

Converts to this type from the input type.

impl<S> From<RiReferenceString<S>> for Box<RiReferenceStr<S>>

where S: Spec,

fn from(s: RiReferenceString<S>) -> Box<RiReferenceStr<S>>

Converts to this type from the input type.

impl<S> From<RiRelativeString<S>> for Box<RiRelativeStr<S>>

where S: Spec,

fn from(s: RiRelativeString<S>) -> Box<RiRelativeStr<S>>

Converts to this type from the input type.

impl<S> From<RiString<S>> for Box<RiStr<S>>

where S: Spec,

fn from(s: RiString<S>) -> Box<RiStr<S>>

Converts to this type from the input type.

impl<'a> From<String> for Box<dyn Error + Send + Sync + 'a>

Available on non-no_global_oom_handling only.

fn from(err: String) -> Box<dyn Error + Send + Sync + 'a>

Converts a String into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;

let a_string_error = "a string error".to_string();
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_string_error);
assert!(
    size_of::<Box<dyn Error + Send + Sync>>() == size_of_val(&a_boxed_error))

impl<'a> From<String> for Box<dyn Error + 'a>

Available on non-no_global_oom_handling only.

fn from(str_err: String) -> Box<dyn Error + 'a>

Converts a String into a box of dyn Error.

Examples

use std::error::Error;

let a_string_error = "a string error".to_string();
let a_boxed_error = Box::<dyn Error>::from(a_string_error);
assert!(size_of::<Box<dyn Error>>() == size_of_val(&a_boxed_error))

impl From<String> for Box<str>

Available on non-no_global_oom_handling only.

fn from(s: String) -> Box<str>

Converts the given String to a boxed str slice that is owned.

Examples

let s1: String = String::from("hello world");
let s2: Box<str> = Box::from(s1);
let s3: String = String::from(s2);

assert_eq!("hello world", s3)

impl<T> From<T> for Box<T>

Available on non-no_global_oom_handling only.

fn from(t: T) -> Box<T>

Converts a T into a Box<T>

The conversion allocates on the heap and moves t from the stack into it.

Examples

let x = 5;
let boxed = Box::new(5);

assert_eq!(Box::from(x), boxed);

impl<T> From<T> for Box<dyn ShouldSample>

where T: ShouldSample + 'static,

fn from(value: T) -> Box<dyn ShouldSample>

Converts to this type from the input type.

impl From<UriTemplateString> for Box<UriTemplateStr>

fn from(s: UriTemplateString) -> Box<UriTemplateStr>

Converts to this type from the input type.

impl<T, A> From<Vec<T, A>> for Box<[T], A>

where A: Allocator,

Available on non-no_global_oom_handling only.

fn from(v: Vec<T, A>) -> Box<[T], A>

Converts a vector into a boxed slice.

Before doing the conversion, this method discards excess capacity like Vec::shrink_to_fit.

Examples

assert_eq!(Box::from(vec![1, 2, 3]), vec![1, 2, 3].into_boxed_slice());

Any excess capacity is removed:

let mut vec = Vec::with_capacity(10);
vec.extend([1, 2, 3]);

assert_eq!(Box::from(vec), vec![1, 2, 3].into_boxed_slice());

impl From<Writer> for Box<[u8]>

fn from(writer: Writer) -> Box<[u8]>

Converts to this type from the input type.

impl<T, const N: usize> From<[T; N]> for Box<[T]>

Available on non-no_global_oom_handling only.

fn from(array: [T; N]) -> Box<[T]>

Converts a [T; N] into a Box<[T]>

This conversion moves the array to newly heap-allocated memory.

Examples

let boxed: Box<[u8]> = Box::from([4, 2]);
println!("{boxed:?}");

impl<'a> FromIterator<&'a char> for Box<str>

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<str>

where T: IntoIterator<Item = &'a char>,

Creates a value from an iterator.

impl<'a> FromIterator<&'a str> for Box<str>

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<str>

where T: IntoIterator<Item = &'a str>,

Creates a value from an iterator.

impl<A> FromIterator<Box<str, A>> for Box<str>

where A: Allocator,

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<str>

where T: IntoIterator<Item = Box<str, A>>,

Creates a value from an iterator.

impl<A> FromIterator<Box<str, A>> for String

where A: Allocator,

Available on non-no_global_oom_handling only.

fn from_iter<I>(iter: I) -> String

where I: IntoIterator<Item = Box<str, A>>,

Creates a value from an iterator.

impl<'a> FromIterator<Cow<'a, str>> for Box<str>

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<str>

where T: IntoIterator<Item = Cow<'a, str>>,

Creates a value from an iterator.

impl<I> FromIterator<I> for Box<[I]>

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<[I]>

where T: IntoIterator<Item = I>,

Creates a value from an iterator.

impl FromIterator<String> for Box<str>

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<str>

where T: IntoIterator<Item = String>,

Creates a value from an iterator.

impl FromIterator<char> for Box<str>

Available on non-no_global_oom_handling only.

fn from_iter<T>(iter: T) -> Box<str>

where T: IntoIterator<Item = char>,

Creates a value from an iterator.

impl<'a> FromParallelIterator<&'a char> for Box<str>

Collects characters from a parallel iterator into a boxed string.

fn from_par_iter<I>(par_iter: I) -> Box<str>

where I: IntoParallelIterator<Item = &'a char>,

Creates an instance of the collection from the parallel iterator par_iter.

impl<'a> FromParallelIterator<&'a str> for Box<str>

Collects string slices from a parallel iterator into a boxed string.

fn from_par_iter<I>(par_iter: I) -> Box<str>

where I: IntoParallelIterator<Item = &'a str>,

Creates an instance of the collection from the parallel iterator par_iter.

impl FromParallelIterator<Box<str>> for String

Collects boxed strings from a parallel iterator into a string.

fn from_par_iter<I>(par_iter: I) -> String

where I: IntoParallelIterator<Item = Box<str>>,

Creates an instance of the collection from the parallel iterator par_iter.

impl FromParallelIterator<Box<str>> for Box<str>

Collects boxed strings from a parallel iterator into a boxed string.

fn from_par_iter<I>(par_iter: I) -> Box<str>

where I: IntoParallelIterator<Item = Box<str>>,

Creates an instance of the collection from the parallel iterator par_iter.

impl<'a> FromParallelIterator<Cow<'a, str>> for Box<str>

Collects string slices from a parallel iterator into a boxed string.

fn from_par_iter<I>(par_iter: I) -> Box<str>

where I: IntoParallelIterator<Item = Cow<'a, str>>,

Creates an instance of the collection from the parallel iterator par_iter.

impl FromParallelIterator<String> for Box<str>

Collects strings from a parallel iterator into a boxed string.

fn from_par_iter<I>(par_iter: I) -> Box<str>

where I: IntoParallelIterator<Item = String>,

Creates an instance of the collection from the parallel iterator par_iter.

impl<T> FromParallelIterator<T> for Box<[T]>

where T: Send,

Collects items from a parallel iterator into a boxed slice.

fn from_par_iter<I>(par_iter: I) -> Box<[T]>

where I: IntoParallelIterator<Item = T>,

Creates an instance of the collection from the parallel iterator par_iter.

impl FromParallelIterator<char> for Box<str>

Collects characters from a parallel iterator into a boxed string.

fn from_par_iter<I>(par_iter: I) -> Box<str>

where I: IntoParallelIterator<Item = char>,

Creates an instance of the collection from the parallel iterator par_iter.

impl<T> FromStream<T> for Box<[T]>

impl<F> FusedFuture for Box<F>

where F: FusedFuture + Unpin + ?Sized,

fn is_terminated(&self) -> bool

Returns true if the underlying future should no longer be polled.

impl<I, A> FusedIterator for Box<I, A>

where I: FusedIterator + ?Sized, A: Allocator,

impl<S> FusedStream for Box<S>

where S: FusedStream + Unpin + ?Sized,

fn is_terminated(&self) -> bool

Returns true if the stream should no longer be polled.

impl<F, A> Future for Box<F, A>

where F: Future + Unpin + ?Sized, A: Allocator,

type Output = <F as Future>::Output

The type of value produced on completion.

fn poll( self: Pin<&mut Box<F, A>>, cx: &mut Context<'_>, ) -> Poll<<Box<F, A> as Future>::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.

impl<T, A> Hash for Box<T, A>

where T: Hash + ?Sized, A: Allocator,

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T, A> Hasher for Box<T, A>

where T: Hasher + ?Sized, A: Allocator,

fn finish(&self) -> u64

Returns the hash value for the values written so far.

fn write(&mut self, bytes: &[u8])

Writes some data into this Hasher.

fn write_u8(&mut self, i: u8)

Writes a single u8 into this hasher.

fn write_u16(&mut self, i: u16)

Writes a single u16 into this hasher.

fn write_u32(&mut self, i: u32)

Writes a single u32 into this hasher.

fn write_u64(&mut self, i: u64)

Writes a single u64 into this hasher.

fn write_u128(&mut self, i: u128)

Writes a single u128 into this hasher.

fn write_usize(&mut self, i: usize)

Writes a single usize into this hasher.

fn write_i8(&mut self, i: i8)

Writes a single i8 into this hasher.

fn write_i16(&mut self, i: i16)

Writes a single i16 into this hasher.

fn write_i32(&mut self, i: i32)

Writes a single i32 into this hasher.

fn write_i64(&mut self, i: i64)

Writes a single i64 into this hasher.

fn write_i128(&mut self, i: i128)

Writes a single i128 into this hasher.

fn write_isize(&mut self, i: isize)

Writes a single isize into this hasher.

fn write_length_prefix(&mut self, len: usize)

🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)

Writes a length prefix into this hasher, as part of being prefix-free.

fn write_str(&mut self, s: &str)

🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)

Writes a single str into this hasher.

impl<NS, T> InflectableEntry<NS> for Box<T>

where NS: NameStyle, T: InflectableEntry<NS> + ?Sized,

fn write<'a>(&'a self, writer: &mut impl EntryWriter<'a>)

Write this metric entry to an EntryWriter

fn sample_group( &self, ) -> impl Iterator<Item = (Cow<'static, str>, Cow<'static, str>)>

Sample group

fn descriptors(&self) -> Descriptors<'_>

Returns descriptors for this entry in write order.

impl<T> Into<Box<[T]>> for WrapBox<T>

fn into(self) -> Box<[T]>

Converts this type into the (usually inferred) input type.

impl IntoHtml for Box<str>

fn into_html(self) -> impl IntoHtml

Convert this value into another IntoHtml value. Used for composition; leaf types should return self.

fn escape_and_write(self, buf: &mut String)

Append the rendered (escaped) HTML to buf.

fn size_hint(&self) -> usize

Best-effort estimate of the rendered byte length, used to pre-allocate the output buffer.

fn into_string(self) -> String

where Self: Sized,

Render to a freshly allocated String.

impl<I, A> IntoIterator for Box<[I], A>

where A: Allocator,

type IntoIter = IntoIter<I, A>

Which kind of iterator are we turning this into?

type Item = I

The type of the elements being iterated over.

fn into_iter(self) -> IntoIter<I, A>

Creates an iterator from a value.

impl<'a, I, A> IntoIterator for &'a Box<[I], A>

where A: Allocator,

type IntoIter = Iter<'a, I>

Which kind of iterator are we turning this into?

type Item = &'a I

The type of the elements being iterated over.

fn into_iter(self) -> Iter<'a, I>

Creates an iterator from a value.

impl<'a, I, A> IntoIterator for &'a mut Box<[I], A>

where A: Allocator,

type IntoIter = IterMut<'a, I>

Which kind of iterator are we turning this into?

type Item = &'a mut I

The type of the elements being iterated over.

fn into_iter(self) -> IterMut<'a, I>

Creates an iterator from a value.

impl<'a, T, const N: usize, A> IntoIterator for &'a Box<[T; N], A>

where A: Allocator,

type IntoIter = Iter<'a, T>

Which kind of iterator are we turning this into?

type Item = &'a T

The type of the elements being iterated over.

fn into_iter(self) -> Iter<'a, T>

Creates an iterator from a value.

impl<'a, T, const N: usize, A> IntoIterator for &'a mut Box<[T; N], A>

where A: Allocator,

type IntoIter = IterMut<'a, T>

Which kind of iterator are we turning this into?

type Item = &'a mut T

The type of the elements being iterated over.

fn into_iter(self) -> IterMut<'a, T>

Creates an iterator from a value.

impl<T, const N: usize, A> IntoIterator for Box<[T; N], A>

where A: Allocator,

type IntoIter = BoxedArrayIntoIter<T, N, A>

Which kind of iterator are we turning this into?

type Item = T

The type of the elements being iterated over.

fn into_iter(self) -> BoxedArrayIntoIter<T, N, A>

Creates an iterator from a value.

impl<K, V> IntoIterator for Box<Slice<K, V>>

type IntoIter = IntoIter<K, V>

Which kind of iterator are we turning this into?

type Item = (K, V)

The type of the elements being iterated over.

fn into_iter(self) -> <Box<Slice<K, V>> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<T> IntoIterator for Box<Slice<T>>

type IntoIter = IntoIter<T>

Which kind of iterator are we turning this into?

type Item = T

The type of the elements being iterated over.

fn into_iter(self) -> <Box<Slice<T>> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<'data, T> IntoParallelIterator for &'data Box<[T]>

where T: Sync,

type Item = &'data T

The type of item that the parallel iterator will produce.

type Iter = Iter<'data, T>

The parallel iterator type that will be created.

fn into_par_iter(self) -> <&'data Box<[T]> as IntoParallelIterator>::Iter

Converts self into a parallel iterator.

impl<'data, T> IntoParallelIterator for &'data mut Box<[T]>

where T: Send,

type Item = &'data mut T

The type of item that the parallel iterator will produce.

type Iter = IterMut<'data, T>

The parallel iterator type that will be created.

fn into_par_iter(self) -> <&'data mut Box<[T]> as IntoParallelIterator>::Iter

Converts self into a parallel iterator.

impl<T> IntoParallelIterator for Box<[T]>

where T: Send,

type Item = T

The type of item that the parallel iterator will produce.

type Iter = IntoIter<T>

The parallel iterator type that will be created.

fn into_par_iter(self) -> <Box<[T]> as IntoParallelIterator>::Iter

Converts self into a parallel iterator.

impl IntoResponse for Box<dyn Error + Send + Sync>

fn into_response(self) -> Response

Create a response.

impl IntoResponse for Box<str>

fn into_response(self) -> Response

Create a response.

impl IntoResponse for Box<[u8]>

fn into_response(self) -> Response

Create a response.

impl<I, A> Iterator for Box<I, A>

where I: Iterator + ?Sized, A: Allocator,

type Item = <I as Iterator>::Item

The type of the elements being iterated over.

fn next(&mut self) -> Option<<I as Iterator>::Item>

Advances the iterator and returns the next value.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the iterator.

fn nth(&mut self, n: usize) -> Option<<I as Iterator>::Item>

Returns the nth element of the iterator.

fn last(self) -> Option<<I as Iterator>::Item>

Consumes the iterator, returning the last element.

fn next_chunk<const N: usize>( &mut self, ) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>

where Self: Sized,

🔬This is a nightly-only experimental API. (iter_next_chunk)

Advances the iterator and returns an array containing the next N values.

fn count(self) -> usize

where Self: Sized,

Consumes the iterator, counting the number of iterations and returning it.

fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>

🔬This is a nightly-only experimental API. (iter_advance_by)

Advances the iterator by n elements.

fn step_by(self, step: usize) -> StepBy<Self>

where Self: Sized,

Creates an iterator starting at the same point, but stepping by the given amount at each iteration.

fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter>

where Self: Sized, U: IntoIterator<Item = Self::Item>,

Takes two iterators and creates a new iterator over both in sequence.

fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter>

where Self: Sized, U: IntoIterator,

‘Zips up’ two iterators into a single iterator of pairs.

fn intersperse(self, separator: Self::Item) -> Intersperse<Self>

where Self: Sized, Self::Item: Clone,

🔬This is a nightly-only experimental API. (iter_intersperse)

Creates a new iterator which places a copy of separator between items of the original iterator.

fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G>

where Self: Sized, G: FnMut() -> Self::Item,

🔬This is a nightly-only experimental API. (iter_intersperse)

Creates a new iterator which places an item generated by separator between items of the original iterator.

fn map<B, F>(self, f: F) -> Map<Self, F>

where Self: Sized, F: FnMut(Self::Item) -> B,

Takes a closure and creates an iterator which calls that closure on each element.

fn for_each<F>(self, f: F)

where Self: Sized, F: FnMut(Self::Item),

Calls a closure on each element of an iterator.

fn filter<P>(self, predicate: P) -> Filter<Self, P>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Creates an iterator which uses a closure to determine if an element should be yielded.

fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>

where Self: Sized, F: FnMut(Self::Item) -> Option<B>,

Creates an iterator that both filters and maps.

fn enumerate(self) -> Enumerate<Self>

where Self: Sized,

Creates an iterator which gives the current iteration count as well as the next value.

fn peekable(self) -> Peekable<Self>

where Self: Sized,

Creates an iterator which can use the peek and peek_mut methods to look at the next element of the iterator without consuming it. See their documentation for more information.

fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Creates an iterator that skips elements based on a predicate.

fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Creates an iterator that yields elements based on a predicate.

fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P>

where Self: Sized, P: FnMut(Self::Item) -> Option<B>,

Creates an iterator that both yields elements based on a predicate and maps.

fn skip(self, n: usize) -> Skip<Self>

where Self: Sized,

Creates an iterator that skips the first n elements.

fn take(self, n: usize) -> Take<Self>

where Self: Sized,

Creates an iterator that yields the first n elements, or fewer if the underlying iterator ends sooner.

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>

where Self: Sized, F: FnMut(&mut St, Self::Item) -> Option<B>,

An iterator adapter which, like fold, holds internal state, but unlike fold, produces a new iterator.

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>

where Self: Sized, U: IntoIterator, F: FnMut(Self::Item) -> U,

Creates an iterator that works like map, but flattens nested structure.

fn flatten(self) -> Flatten<Self>

where Self: Sized, Self::Item: IntoIterator,

Creates an iterator that flattens nested structure.

fn map_windows<F, R, const N: usize>(self, f: F) -> MapWindows<Self, F, N>

where Self: Sized, F: FnMut(&[Self::Item; N]) -> R,

🔬This is a nightly-only experimental API. (iter_map_windows)

Calls the given function f for each contiguous window of size N over self and returns an iterator over the outputs of f. Like slice::windows(), the windows during mapping overlap as well.

fn fuse(self) -> Fuse<Self>

where Self: Sized,

Creates an iterator which ends after the first None.

fn inspect<F>(self, f: F) -> Inspect<Self, F>

where Self: Sized, F: FnMut(&Self::Item),

Does something with each element of an iterator, passing the value on.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Iterator.

fn collect<B>(self) -> B

where B: FromIterator<Self::Item>, Self: Sized,

Transforms an iterator into a collection.

fn try_collect<B>( &mut self, ) -> <<Self::Item as Try>::Residual as Residual<B>>::TryType

where Self: Sized, Self::Item: Try, <Self::Item as Try>::Residual: Residual<B>, B: FromIterator<<Self::Item as Try>::Output>,

🔬This is a nightly-only experimental API. (iterator_try_collect)

Fallibly transforms an iterator into a collection, short circuiting if a failure is encountered.

fn collect_into<E>(self, collection: &mut E) -> &mut E

where E: Extend<Self::Item>, Self: Sized,

🔬This is a nightly-only experimental API. (iter_collect_into)

Collects all the items from an iterator into a collection.

fn partition<B, F>(self, f: F) -> (B, B)

where Self: Sized, B: Default + Extend<Self::Item>, F: FnMut(&Self::Item) -> bool,

Consumes an iterator, creating two collections from it.

fn partition_in_place<'a, T, P>(self, predicate: P) -> usize

where T: 'a, Self: Sized + DoubleEndedIterator<Item = &'a mut T>, P: FnMut(&T) -> bool,

🔬This is a nightly-only experimental API. (iter_partition_in_place)

Reorders the elements of this iterator in-place according to the given predicate, such that all those that return true precede all those that return false. Returns the number of true elements found.

fn is_partitioned<P>(self, predicate: P) -> bool

where Self: Sized, P: FnMut(Self::Item) -> bool,

🔬This is a nightly-only experimental API. (iter_is_partitioned)

Checks if the elements of this iterator are partitioned according to the given predicate, such that all those that return true precede all those that return false.

fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R

where Self: Sized, F: FnMut(B, Self::Item) -> R, R: Try<Output = B>,

An iterator method that applies a function as long as it returns successfully, producing a single, final value.

fn try_for_each<F, R>(&mut self, f: F) -> R

where Self: Sized, F: FnMut(Self::Item) -> R, R: Try<Output = ()>,

An iterator method that applies a fallible function to each item in the iterator, stopping at the first error and returning that error.

fn fold<B, F>(self, init: B, f: F) -> B

where Self: Sized, F: FnMut(B, Self::Item) -> B,

Folds every element into an accumulator by applying an operation, returning the final result.

fn reduce<F>(self, f: F) -> Option<Self::Item>

where Self: Sized, F: FnMut(Self::Item, Self::Item) -> Self::Item,

Reduces the elements to a single one, by repeatedly applying a reducing operation.

fn try_reduce<R>( &mut self, f: impl FnMut(Self::Item, Self::Item) -> R, ) -> <<R as Try>::Residual as Residual<Option<<R as Try>::Output>>>::TryType

where Self: Sized, R: Try<Output = Self::Item>, <R as Try>::Residual: Residual<Option<Self::Item>>,

🔬This is a nightly-only experimental API. (iterator_try_reduce)

Reduces the elements to a single one by repeatedly applying a reducing operation. If the closure returns a failure, the failure is propagated back to the caller immediately.

fn all<F>(&mut self, f: F) -> bool

where Self: Sized, F: FnMut(Self::Item) -> bool,

Tests if every element of the iterator matches a predicate.

fn any<F>(&mut self, f: F) -> bool

where Self: Sized, F: FnMut(Self::Item) -> bool,

Tests if any element of the iterator matches a predicate.

fn find<P>(&mut self, predicate: P) -> Option<Self::Item>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Searches for an element of an iterator that satisfies a predicate.

fn find_map<B, F>(&mut self, f: F) -> Option<B>

where Self: Sized, F: FnMut(Self::Item) -> Option<B>,

Applies function to the elements of iterator and returns the first non-none result.

fn try_find<R>( &mut self, f: impl FnMut(&Self::Item) -> R, ) -> <<R as Try>::Residual as Residual<Option<Self::Item>>>::TryType

where Self: Sized, R: Try<Output = bool>, <R as Try>::Residual: Residual<Option<Self::Item>>,

🔬This is a nightly-only experimental API. (try_find)

Applies function to the elements of iterator and returns the first true result or the first error.

fn position<P>(&mut self, predicate: P) -> Option<usize>

where Self: Sized, P: FnMut(Self::Item) -> bool,

Searches for an element in an iterator, returning its index.

fn rposition<P>(&mut self, predicate: P) -> Option<usize>

where P: FnMut(Self::Item) -> bool, Self: Sized + ExactSizeIterator + DoubleEndedIterator,

Searches for an element in an iterator from the right, returning its index.

fn max(self) -> Option<Self::Item>

where Self: Sized, Self::Item: Ord,

Returns the maximum element of an iterator.

fn min(self) -> Option<Self::Item>

where Self: Sized, Self::Item: Ord,

Returns the minimum element of an iterator.

fn max_by_key<B, F>(self, f: F) -> Option<Self::Item>

where B: Ord, Self: Sized, F: FnMut(&Self::Item) -> B,

Returns the element that gives the maximum value from the specified function.

fn max_by<F>(self, compare: F) -> Option<Self::Item>

where Self: Sized, F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the maximum value with respect to the specified comparison function.

fn min_by_key<B, F>(self, f: F) -> Option<Self::Item>

where B: Ord, Self: Sized, F: FnMut(&Self::Item) -> B,

Returns the element that gives the minimum value from the specified function.

fn min_by<F>(self, compare: F) -> Option<Self::Item>

where Self: Sized, F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the minimum value with respect to the specified comparison function.

fn rev(self) -> Rev<Self>

where Self: Sized + DoubleEndedIterator,

Reverses an iterator’s direction.

fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB)

where FromA: Default + Extend<A>, FromB: Default + Extend<B>, Self: Sized + Iterator<Item = (A, B)>,

Converts an iterator of pairs into a pair of containers.

fn copied<'a, T>(self) -> Copied<Self>

where T: Copy + 'a, Self: Sized + Iterator<Item = &'a T>,

Creates an iterator which copies all of its elements.

fn cloned<'a, T>(self) -> Cloned<Self>

where T: Clone + 'a, Self: Sized + Iterator<Item = &'a T>,

Creates an iterator which clones all of its elements.

fn cycle(self) -> Cycle<Self>

where Self: Sized + Clone,

Repeats an iterator endlessly.

fn array_chunks<const N: usize>(self) -> ArrayChunks<Self, N>

where Self: Sized,

🔬This is a nightly-only experimental API. (iter_array_chunks)

Returns an iterator over N elements of the iterator at a time.

fn sum<S>(self) -> S

where Self: Sized, S: Sum<Self::Item>,

Sums the elements of an iterator.

fn product<P>(self) -> P

where Self: Sized, P: Product<Self::Item>,

Iterates over the entire iterator, multiplying all the elements.

fn cmp<I>(self, other: I) -> Ordering

where I: IntoIterator<Item = Self::Item>, Self::Item: Ord, Self: Sized,

Lexicographically compares the elements of this Iterator with those of another.

fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering

where Self: Sized, I: IntoIterator, F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Ordering,

🔬This is a nightly-only experimental API. (iter_order_by)

Lexicographically compares the elements of this Iterator with those of another with respect to the specified comparison function.

fn partial_cmp<I>(self, other: I) -> Option<Ordering>

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Lexicographically compares the PartialOrd elements of this Iterator with those of another. The comparison works like short-circuit evaluation, returning a result without comparing the remaining elements. As soon as an order can be determined, the evaluation stops and a result is returned.

fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering>

where Self: Sized, I: IntoIterator, F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,

🔬This is a nightly-only experimental API. (iter_order_by)

Lexicographically compares the elements of this Iterator with those of another with respect to the specified comparison function.

fn eq<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialEq<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are equal to those of another.

fn eq_by<I, F>(self, other: I, eq: F) -> bool

where Self: Sized, I: IntoIterator, F: FnMut(Self::Item, <I as IntoIterator>::Item) -> bool,

🔬This is a nightly-only experimental API. (iter_order_by)

Determines if the elements of this Iterator are equal to those of another with respect to the specified equality function.

fn ne<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialEq<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are not equal to those of another.

fn lt<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically less than those of another.

fn le<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically less or equal to those of another.

fn gt<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically greater than those of another.

fn ge<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically greater than or equal to those of another.

fn is_sorted(self) -> bool

where Self: Sized, Self::Item: PartialOrd,

Checks if the elements of this iterator are sorted.

fn is_sorted_by<F>(self, compare: F) -> bool

where Self: Sized, F: FnMut(&Self::Item, &Self::Item) -> bool,

Checks if the elements of this iterator are sorted using the given comparator function.

fn is_sorted_by_key<F, K>(self, f: F) -> bool

where Self: Sized, F: FnMut(Self::Item) -> K, K: PartialOrd,

Checks if the elements of this iterator are sorted using the given key extraction function.

impl JsonWritable for Box<str>

fn write_json(self, output: &mut Vec<u8>) -> Result<(), JsonError>

Writes a complete JSON value to output.

impl<L, S> Layer<S> for Box<L>

where L: Layer<S>, S: Subscriber,

Available on crate features alloc or std only.

fn on_register_dispatch(&self, subscriber: &Dispatch)

Performs late initialization when installing this layer as a Subscriber.

fn on_layer(&mut self, subscriber: &mut S)

Performs late initialization when attaching a Layer to a Subscriber.

fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a new span was constructed with the given Attributes and Id.

fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest

Registers a new callsite with this layer, returning whether or not the layer is interested in being notified about the callsite, similarly to Subscriber::register_callsite.

fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool

Returns true if this layer is interested in a span or event with the given metadata in the current [Context], similarly to Subscriber::enabled.

fn on_record(&self, span: &Id, values: &Record<'_>, ctx: Context<'_, S>)

Notifies this layer that a span with the given Id recorded the given values.

fn on_follows_from(&self, span: &Id, follows: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the ID span recorded that it follows from the span with the ID follows.

fn event_enabled(&self, event: &Event<'_>, ctx: Context<'_, S>) -> bool

Called before on_event, to determine if on_event should be called.

fn on_event(&self, event: &Event<'_>, ctx: Context<'_, S>)

Notifies this layer that an event has occurred.

fn on_enter(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the given ID was entered.

fn on_exit(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID was exited.

fn on_close(&self, id: Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID has been closed.

fn on_id_change(&self, old: &Id, new: &Id, ctx: Context<'_, S>)

Notifies this layer that a span ID has been cloned, and that the subscriber returned a different ID.

fn and_then<L>(self, layer: L) -> Layered<L, Self, S>

where L: Layer<S>, Self: Sized,

Composes this layer around the given Layer, returning a Layered struct implementing Layer.

fn with_subscriber(self, inner: S) -> Layered<Self, S>

where Self: Sized,

Composes this Layer with the given Subscriber, returning a Layered struct that implements Subscriber.

fn with_filter<F>(self, filter: F) -> Filtered<Self, F, S>

where Self: Sized, F: Filter<S>,

Available on crate features registry and std only.

Combines self with a [Filter], returning a Filtered layer.

fn boxed(self) -> Box<dyn Layer<S> + Send + Sync>

where Self: Sized + Layer<S> + Send + Sync + 'static, S: Subscriber,

Erases the type of this [Layer], returning a Boxed dyn Layer trait object.

impl<S> Layer<S> for Box<dyn Layer<S> + Send + Sync>

where S: Subscriber,

Available on crate features alloc or std only.

fn on_register_dispatch(&self, subscriber: &Dispatch)

Performs late initialization when installing this layer as a Subscriber.

fn on_layer(&mut self, subscriber: &mut S)

Performs late initialization when attaching a Layer to a Subscriber.

fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a new span was constructed with the given Attributes and Id.

fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest

Registers a new callsite with this layer, returning whether or not the layer is interested in being notified about the callsite, similarly to Subscriber::register_callsite.

fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool

Returns true if this layer is interested in a span or event with the given metadata in the current [Context], similarly to Subscriber::enabled.

fn on_record(&self, span: &Id, values: &Record<'_>, ctx: Context<'_, S>)

Notifies this layer that a span with the given Id recorded the given values.

fn on_follows_from(&self, span: &Id, follows: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the ID span recorded that it follows from the span with the ID follows.

fn event_enabled(&self, event: &Event<'_>, ctx: Context<'_, S>) -> bool

Called before on_event, to determine if on_event should be called.

fn on_event(&self, event: &Event<'_>, ctx: Context<'_, S>)

Notifies this layer that an event has occurred.

fn on_enter(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the given ID was entered.

fn on_exit(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID was exited.

fn on_close(&self, id: Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID has been closed.

fn on_id_change(&self, old: &Id, new: &Id, ctx: Context<'_, S>)

Notifies this layer that a span ID has been cloned, and that the subscriber returned a different ID.

fn and_then<L>(self, layer: L) -> Layered<L, Self, S>

where L: Layer<S>, Self: Sized,

Composes this layer around the given Layer, returning a Layered struct implementing Layer.

fn with_subscriber(self, inner: S) -> Layered<Self, S>

where Self: Sized,

Composes this Layer with the given Subscriber, returning a Layered struct that implements Subscriber.

fn with_filter<F>(self, filter: F) -> Filtered<Self, F, S>

where Self: Sized, F: Filter<S>,

Available on crate features registry and std only.

Combines self with a [Filter], returning a Filtered layer.

fn boxed(self) -> Box<dyn Layer<S> + Send + Sync>

where Self: Sized + Layer<S> + Send + Sync + 'static, S: Subscriber,

Erases the type of this [Layer], returning a Boxed dyn Layer trait object.

impl Lift for Box<str>

impl<T> Lift for Box<[T]>

where T: Lift,

impl<Sp> LocalSpawn for Box<Sp>

where Sp: LocalSpawn + ?Sized,

fn spawn_local_obj( &self, future: LocalFutureObj<'static, ()>, ) -> Result<(), SpawnError>

Spawns a future that will be run to completion.

fn status_local(&self) -> Result<(), SpawnError>

Determines whether the executor is able to spawn new tasks.

impl<T> Log for Box<T>

where T: Log + ?Sized,

Available on crate feature std only.

fn enabled(&self, metadata: &Metadata<'_>) -> bool

Determines if a log message with the specified metadata would be logged.

fn log(&self, record: &Record<'_>)

Logs the Record.

fn flush(&self)

Flushes any buffered records.

impl<T> Lower for Box<T>

where T: Lower + ?Sized,

impl<Input, T> Matcher<Input> for Box<T>

where T: Matcher<Input>,

fn matches(&self, ext: Option<&Extensions>, input: &Input) -> bool

returns true on a match, false otherwise

fn or<M>(self, other: M) -> impl Matcher<Input>

where Self: Sized, M: Matcher<Input>,

Provide an alternative matcher to match if the current one does not match.

fn and<M>(self, other: M) -> impl Matcher<Input>

where Self: Sized, M: Matcher<Input>,

Add another condition to match on top of the current one.

fn not(self) -> impl Matcher<Input>

where Self: Sized,

Negate the current condition.

impl<Input> Matcher<Input> for Box<dyn Matcher<Input>>

where Input: Send + 'static,

fn matches(&self, ext: Option<&Extensions>, input: &Input) -> bool

returns true on a match, false otherwise

fn or<M>(self, other: M) -> impl Matcher<Input>

where Self: Sized, M: Matcher<Input>,

Provide an alternative matcher to match if the current one does not match.

fn and<M>(self, other: M) -> impl Matcher<Input>

where Self: Sized, M: Matcher<Input>,

Add another condition to match on top of the current one.

fn not(self) -> impl Matcher<Input>

where Self: Sized,

Negate the current condition.

impl<M> Message for Box<M>

where M: Message,

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl<T> MetricValue for Box<T>

where T: MetricValue,

type Unit = <T as MetricValue>::Unit

The [UnitTag] the metric will be emitted at

fn with_unit<U>(self) -> WithUnit<Self, U>

where U: UnitTag, Self: Sized, Self::Unit: Convert<U>,

Convert this value to the given [Unit] when being written.

fn with_dimension( self, key: impl Into<Cow<'static, str>>, value: impl Into<Cow<'static, str>>, ) -> WithDimensions<Self, 1>

where Self: Sized,

Add a dimension (key, value) when being written.

fn with_dimensions<C, I, const N: usize>( self, dimensions: impl IntoIterator<Item = (C, I)>, ) -> WithDimensions<Self, N>

where Self: Sized, C: Into<Cow<'static, str>>, I: Into<Cow<'static, str>>,

Add a series of dimensions when being written.

impl<T, A> Ord for Box<T, A>

where T: Ord + ?Sized, A: Allocator,

fn cmp(&self, other: &Box<T, A>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl ParallelExtend<Box<str>> for String

Extends a string with boxed strings from a parallel iterator.

fn par_extend<I>(&mut self, par_iter: I)

where I: IntoParallelIterator<Item = Box<str>>,

Extends an instance of the collection with the elements drawn from the parallel iterator par_iter.

impl<T> Parse for Box<T>

where T: Parse,

fn parse(input: &ParseBuffer<'_>) -> Result<Box<T>, Error>

impl<T> Parse for Box<T>

where T: Parse,

fn parse(input: &ParseBuffer<'_>) -> Result<Box<T>, Error>

impl<I, O, E> Parser<I, O, E> for Box<dyn Parser<I, O, E> + '_>

Available on crate feature alloc only.

fn parse_next(&mut self, i: &mut I) -> Result<O, E>

Take tokens from the [Stream], turning it into the output

fn parse( &mut self, input: I, ) -> Result<O, ParseError<I, <E as ParserError<I>>::Inner>>

where Self: Sized, I: Stream + StreamIsPartial, E: ParserError<I>, <E as ParserError<I>>::Inner: ParserError<I>,

Parse all of input, generating O from it

fn parse_iter(&mut self, input: I) -> ParseIter<'_, Self, I, O, E>

where Self: Sized, I: Stream + StreamIsPartial, E: ParserError<I>, <E as ParserError<I>>::Inner: ParserError<I>,

Repeat this parse until all of input is consumed, generating O from it

fn parse_peek(&mut self, input: I) -> Result<(I, O), E>

Take tokens from the [Stream], turning it into the output

fn by_ref(&mut self) -> ByRef<'_, Self, I, O, E>

where Self: Sized,

Treat &mut Self as a parser

fn value<O2>(self, val: O2) -> Value<Self, I, O, O2, E>

where Self: Sized, O2: Clone,

Produce the provided value

fn default_value<O2>(self) -> DefaultValue<Self, I, O, O2, E>

where Self: Sized, O2: Default,

Produce a type’s default value

fn void(self) -> Void<Self, I, O, E>

where Self: Sized,

Discards the output of the Parser

fn output_into<O2>(self) -> OutputInto<Self, I, O, O2, E>

where Self: Sized, O: Into<O2>,

Convert the parser’s output to another type using std::convert::From

fn take(self) -> Take<Self, I, O, E>

where Self: Sized, I: Stream,

Produce the consumed input as produced value.

fn with_taken(self) -> WithTaken<Self, I, O, E>

where Self: Sized, I: Stream,

Produce the consumed input with the output

fn span(self) -> Span<Self, I, O, E>

where Self: Sized, I: Stream + Location,

Produce the location of the consumed input as produced value.

fn with_span(self) -> WithSpan<Self, I, O, E>

where Self: Sized, I: Stream + Location,

Produce the location of consumed input with the output

fn map<G, O2>(self, map: G) -> Map<Self, G, I, O, O2, E>

where G: FnMut(O) -> O2, Self: Sized,

Maps a function over the output of a parser

fn try_map<G, O2, E2>(self, map: G) -> TryMap<Self, G, I, O, O2, E, E2>

where Self: Sized, G: FnMut(O) -> Result<O2, E2>, I: Stream, E: FromExternalError<I, E2> + ParserError<I>,

Applies a function returning a Result over the output of a parser.

fn verify_map<G, O2>(self, map: G) -> VerifyMap<Self, G, I, O, O2, E>

where Self: Sized, G: FnMut(O) -> Option<O2>, I: Stream, E: ParserError<I>,

Apply both [Parser::verify] and [Parser::map].

fn flat_map<G, H, O2>(self, map: G) -> FlatMap<Self, G, H, I, O, O2, E>

where Self: Sized, G: FnMut(O) -> H, H: Parser<I, O2, E>,

Creates a parser from the output of this one

fn and_then<G, O2>(self, inner: G) -> AndThen<Self, G, I, O, O2, E>

where Self: Sized, G: Parser<O, O2, E>, O: StreamIsPartial, I: Stream,

Applies a second parser over the output of the first one

fn parse_to<O2>(self) -> ParseTo<Self, I, O, O2, E>

where Self: Sized, I: Stream, O: ParseSlice<O2>, E: ParserError<I>,

Apply std::str::FromStr to the output of the parser

fn verify<G, O2>(self, filter: G) -> Verify<Self, G, I, O, O2, E>

where Self: Sized, G: FnMut(&O2) -> bool, I: Stream, O: Borrow<O2>, E: ParserError<I>, O2: ?Sized,

Returns the output of the child parser if it satisfies a verification function.

fn context<C>(self, context: C) -> Context<Self, I, O, E, C>

where Self: Sized, I: Stream, E: AddContext<I, C> + ParserError<I>, C: Clone + Debug,

If parsing fails, add context to the error

fn context_with<F, C, FI>( self, context: F, ) -> ContextWith<Self, I, O, E, F, C, FI>

where Self: Sized, I: Stream, E: AddContext<I, C> + ParserError<I>, F: Fn() -> FI + Clone, C: Debug, FI: Iterator<Item = C>,

If parsing fails, dynamically add context to the error

fn map_err<G, E2>(self, map: G) -> MapErr<Self, G, I, O, E, E2>

where G: FnMut(E) -> E2, Self: Sized,

Maps a function over the error of a parser

fn complete_err(self) -> CompleteErr<Self, I, O, E>

where Self: Sized,

Transforms [Incomplete][crate::error::ErrMode::Incomplete] into [Backtrack][crate::error::ErrMode::Backtrack]

fn err_into<E2>(self) -> ErrInto<Self, I, O, E, E2>

where Self: Sized, E: Into<E2>,

Convert the parser’s error to another type using std::convert::From

impl<'a, I, O, E> Parser<I, O, E> for Box<dyn Parser<I, O, E> + 'a>

Available on crate feature alloc only.

fn parse(&mut self, input: I) -> Result<(I, O), Err<E>>

A parser takes in input type, and returns a Result containing either the remaining input and the output value, or an error

fn map<G, O2>(self, g: G) -> Map<Self, G, O>

where G: Fn(O) -> O2, Self: Sized,

Maps a function over the result of a parser

fn flat_map<G, H, O2>(self, g: G) -> FlatMap<Self, G, O>

where G: FnMut(O) -> H, H: Parser<I, O2, E>, Self: Sized,

Creates a second parser from the output of the first one, then apply over the rest of the input

fn and_then<G, O2>(self, g: G) -> AndThen<Self, G, O>

where G: Parser<O, O2, E>, Self: Sized,

Applies a second parser over the output of the first one

fn and<G, O2>(self, g: G) -> And<Self, G>

where G: Parser<I, O2, E>, Self: Sized,

Applies a second parser after the first one, return their results as a tuple

fn or<G>(self, g: G) -> Or<Self, G>

where G: Parser<I, O, E>, Self: Sized,

Applies a second parser over the input if the first one failed

fn into<O2, E2>(self) -> Into<Self, O, O2, E, E2>

where O2: From<O>, E2: From<E>, Self: Sized,

automatically converts the parser’s output and error values to another type, as long as they implement the From trait

impl<T, A> PartialEq for Box<T, A>

where T: PartialEq + ?Sized, A: Allocator,

fn eq(&self, other: &Box<T, A>) -> bool

Equality operator ==.

fn ne(&self, other: &Box<T, A>) -> bool

Inequality operator !=.

impl<'a> PartialEq<ArcStr> for Box<str>

fn eq(&self, s: &ArcStr) -> bool

Equality operator ==.

fn ne(&self, s: &ArcStr) -> bool

Inequality operator !=.

impl<'a> PartialEq<Box<str>> for ArcStr

fn eq(&self, s: &Box<str>) -> bool

Equality operator ==.

fn ne(&self, s: &Box<str>) -> bool

Inequality operator !=.

impl<'a> PartialEq<Box<str>> for Substr

fn eq(&self, s: &Box<str>) -> bool

Equality operator ==.

fn ne(&self, s: &Box<str>) -> bool

Inequality operator !=.

impl<'a> PartialEq<Substr> for Box<str>

fn eq(&self, s: &Substr) -> bool

Equality operator ==.

fn ne(&self, s: &Substr) -> bool

Inequality operator !=.

impl<T, A> PartialOrd for Box<T, A>

where T: PartialOrd + ?Sized, A: Allocator,

fn partial_cmp(&self, other: &Box<T, A>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Box<T, A>) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Box<T, A>) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn ge(&self, other: &Box<T, A>) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

fn gt(&self, other: &Box<T, A>) -> bool

Tests greater than (for self and other) and is used by the > operator.

impl<T, A> PinSafePointer for Box<T, A>

where A: Allocator + 'static, T: ?Sized,

impl<T, A> Pointer for Box<T, A>

where A: Allocator, T: ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<B, E, P> Policy<B, E> for Box<P>

where P: Policy<B, E> + ?Sized,

fn redirect(&mut self, attempt: &Attempt<'_>) -> Result<Action, E>

Invoked when the service received a response with a redirection status code (3xx).

fn on_request(&mut self, request: &mut Request<B>)

Invoked right before the service makes a request, regardless of whether it is redirected or not.

fn clone_body(&mut self, body: &B) -> Option<B>

Try to clone a request body before the service makes a redirected request.

impl<Input, P> Policy<Input> for Box<P>

where P: Policy<Input>, Input: Send + 'static,

type Guard = <P as Policy<Input>>::Guard

The guard type that is returned when the input is allowed to proceed.

type Error = <P as Policy<Input>>::Error

The error type that is returned when the input is not allowed to proceed, and should be aborted.

async fn check( &self, input: Input, ) -> PolicyResult<Input, <Box<P> as Policy<Input>>::Guard, <Box<P> as Policy<Input>>::Error>

Check whether the input is allowed to proceed.

impl<R> Read for Box<R>

where R: Read + ?Sized,

fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_buf(&mut self, cursor: BorrowedCursor<'_, u8>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Reads all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Reads all bytes until EOF in this source, appending them to buf.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>

Reads the exact number of bytes required to fill buf.

fn read_buf_exact( &mut self, cursor: BorrowedCursor<'_, u8>, ) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Reads the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Read.

fn bytes(self) -> Bytes<Self>

where Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R>

where R: Read, Self: Sized,

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

where Self: Sized,

Creates an adapter which will read at most limit bytes from it.

fn read_array<const N: usize>(&mut self) -> Result<[u8; N], Error>

where Self: Sized,

🔬This is a nightly-only experimental API. (read_array)

Read and return a fixed array of bytes from this source.

fn read_le<T>(&mut self) -> Result<T, Error>

where T: FromEndianBytes, Self: Sized,

🔬This is a nightly-only experimental API. (read_le)

Read and return a type (e.g. an integer) in little-endian order.

fn read_be<T>(&mut self) -> Result<T, Error>

where T: FromEndianBytes, Self: Sized,

🔬This is a nightly-only experimental API. (read_le)

Read and return a type (e.g. an integer) in big-endian order.

impl<T> ReaderAt for Box<T>

where T: ReaderAt + ?Sized,

fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize, Error>

Read bytes from the reader at a specific offset

fn read_exact_at(&self, buf: &mut [u8], offset: u64) -> Result<(), Error>

Sibling to read_exact, but at an offset

impl<T> Recorder for Box<T>

where T: Recorder + ?Sized,

fn describe_counter( &self, key: KeyName, unit: Option<Unit>, description: Cow<'static, str>, )

Describes a counter.

fn describe_gauge( &self, key: KeyName, unit: Option<Unit>, description: Cow<'static, str>, )

Describes a gauge.

fn describe_histogram( &self, key: KeyName, unit: Option<Unit>, description: Cow<'static, str>, )

Describes a histogram.

fn register_counter(&self, key: &Key, metadata: &Metadata<'_>) -> Counter

Registers a counter.

fn register_gauge(&self, key: &Key, metadata: &Metadata<'_>) -> Gauge

Registers a gauge.

fn register_histogram(&self, key: &Key, metadata: &Metadata<'_>) -> Histogram

Registers a histogram.

impl<R> Rng for Box<R>

where R: Rng + ?Sized,

fn next_u64(&mut self) -> u64

Generate a random u64.

fn next_f64(&mut self) -> f64

Generate a random f64 between [0, 1).

fn next_range(&mut self, range: Range<u64>) -> u64

Randomly pick a value within the range.

impl<S> Seek for Box<S>

where S: Seek + ?Sized,

fn seek(&mut self, pos: SeekFrom) -> Result<u64, Error>

Seek to an offset, in bytes, in a stream.

fn rewind(&mut self) -> Result<(), Error>

Rewind to the beginning of a stream.

fn stream_len(&mut self) -> Result<u64, Error>

🔬This is a nightly-only experimental API. (seek_stream_len)

Returns the length of this stream (in bytes).

fn stream_position(&mut self) -> Result<u64, Error>

Returns the current seek position from the start of the stream.

fn seek_relative(&mut self, offset: i64) -> Result<(), Error>

Seeks relative to the current position.

impl<T> Serialize for Box<T>

where T: Serialize + ?Sized,

Available on crate features alloc or std only.

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<S, Input> Service<Input> for Box<S>

where S: Service<Input>,

type Output = <S as Service<Input>>::Output

The type of the output returned by the service.

type Error = <S as Service<Input>>::Error

The type of error returned by the service.

fn serve( &self, input: Input, ) -> impl Future<Output = Result<<Box<S> as Service<Input>>::Output, <Box<S> as Service<Input>>::Error>> + Send

Serve an output or an error for the given input

fn boxed(self) -> BoxService<Input, Self::Output, Self::Error>

Box this service to allow for dynamic dispatch.

impl<S, Request> Service<Request> for Box<S>

where S: Service<Request> + ?Sized,

type Response = <S as Service<Request>>::Response

Responses given by the service.

type Error = <S as Service<Request>>::Error

Errors produced by the service.

type Future = <S as Service<Request>>::Future

The future response value.

fn poll_ready( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), <S as Service<Request>>::Error>>

Returns Poll::Ready(Ok(())) when the service is able to process requests.

fn call(&mut self, request: Request) -> <S as Service<Request>>::Future

Process the request and return the response asynchronously.

impl<S, Item> Sink<Item> for Box<S>

where S: Sink<Item> + Unpin + ?Sized,

type Error = <S as Sink<Item>>::Error

The type of value produced by the sink when an error occurs.

fn poll_ready( self: Pin<&mut Box<S>>, cx: &mut Context<'_>, ) -> Poll<Result<(), <Box<S> as Sink<Item>>::Error>>

Attempts to prepare the Sink to receive a value.

fn start_send( self: Pin<&mut Box<S>>, item: Item, ) -> Result<(), <Box<S> as Sink<Item>>::Error>

Begin the process of sending a value to the sink. Each call to this function must be preceded by a successful call to poll_ready which returned Poll::Ready(Ok(())).

fn poll_flush( self: Pin<&mut Box<S>>, cx: &mut Context<'_>, ) -> Poll<Result<(), <Box<S> as Sink<Item>>::Error>>

Flush any remaining output from this sink.

fn poll_close( self: Pin<&mut Box<S>>, cx: &mut Context<'_>, ) -> Poll<Result<(), <Box<S> as Sink<Item>>::Error>>

Flush any remaining output and close this sink, if necessary.

impl<T> Source for Box<T>

where T: Source + ?Sized,

fn register( &mut self, registry: &Registry, token: Token, interests: Interest, ) -> Result<(), Error>

Register self with the given Registry instance.

fn reregister( &mut self, registry: &Registry, token: Token, interests: Interest, ) -> Result<(), Error>

Re-register self with the given Registry instance.

fn deregister(&mut self, registry: &Registry) -> Result<(), Error>

Deregister self from the given Registry instance.

impl<Sp> Spawn for Box<Sp>

where Sp: Spawn + ?Sized,

fn spawn_obj(&self, future: FutureObj<'static, ()>) -> Result<(), SpawnError>

Spawns a future that will be run to completion.

fn status(&self) -> Result<(), SpawnError>

Determines whether the executor is able to spawn new tasks.

impl<S> Stream for Box<S>

where S: Stream + Unpin + ?Sized,

type Item = <S as Stream>::Item

Values yielded by the stream.

fn poll_next( self: Pin<&mut Box<S>>, cx: &mut Context<'_>, ) -> Poll<Option<<Box<S> as Stream>::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream.

impl<S> Subscriber for Box<S>

where S: Subscriber + ?Sized,

fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest

Registers a new callsite with this subscriber, returning whether or not the subscriber is interested in being notified about the callsite.

fn enabled(&self, metadata: &Metadata<'_>) -> bool

Returns true if a span or event with the specified metadata would be recorded.

fn max_level_hint(&self) -> Option<LevelFilter>

Returns the highest verbosity level that this Subscriber will enable, or None, if the subscriber does not implement level-based filtering or chooses not to implement this method.

fn new_span(&self, span: &Attributes<'_>) -> Id

Visit the construction of a new span, returning a new span ID for the span being constructed.

fn record(&self, span: &Id, values: &Record<'_>)

Record a set of values on a span.

fn record_follows_from(&self, span: &Id, follows: &Id)

Adds an indication that span follows from the span with the id follows.

fn event_enabled(&self, event: &Event<'_>) -> bool

Determine if an Event should be recorded.

fn event(&self, event: &Event<'_>)

Records that an Event has occurred.

fn enter(&self, span: &Id)

Records that a span has been entered.

fn exit(&self, span: &Id)

Records that a span has been exited.

fn clone_span(&self, id: &Id) -> Id

Notifies the subscriber that a span ID has been cloned.

fn try_close(&self, id: Id) -> bool

Notifies the subscriber that a span ID has been dropped, and returns true if there are now 0 IDs that refer to that span.

fn drop_span(&self, id: Id)

👎Deprecated since 0.1.2:

use Subscriber::try_close instead

This method is deprecated.

fn current_span(&self) -> Current

Returns a type representing this subscriber’s view of the current span.

unsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>

If self is the same type as the provided TypeId, returns an untyped *const pointer to that type. Otherwise, returns None.

fn on_register_dispatch(&self, subscriber: &Dispatch)

Invoked when this subscriber becomes a Dispatch.

impl<T> ToStatic for Box<T>

where T: ToStatic,

type Owned = Box<<T as ToStatic>::Owned>

fn to_static(&self) -> <Box<T> as ToStatic>::Owned

impl<T> ToTokens for Box<T>

where T: ToTokens + ?Sized,

fn to_tokens(&self, tokens: &mut TokenStream)

🔬This is a nightly-only experimental API. (proc_macro_totokens)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

🔬This is a nightly-only experimental API. (proc_macro_totokens)

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

🔬This is a nightly-only experimental API. (proc_macro_totokens)

Convert self directly into a TokenStream object.

impl<T> ToTokens for Box<T>

where T: ToTokens + ?Sized,

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.

impl<W> TraceWriter for Box<W>

where W: TraceWriter + ?Sized,

fn flush(&mut self) -> Result<(), Error>

Flush buffered data to the underlying storage.

fn take_rotated(&mut self) -> bool

Returns true if the writer rotated to a new file since the last call to this method.

fn finalize(&mut self) -> Result<(), Error>

Finalize the writer: flush, rename .active → .bin, and prevent further writes. This is a terminal operation — the writer becomes inert afterward.

fn write_encoded_batch(&mut self, batch: &Batch) -> Result<(), Error>

Transcode encoded bytes into this writer.

fn segment_metadata(&self) -> &[(String, String)]

Return the current segment metadata entries. Default returns empty.

fn update_segment_metadata(&mut self, entries: Vec<(String, String)>)

Merge the segment metadata entries that will be written into the next rotated segment (e.g. merged static + runtime names). Default is a no-op.

fn write_current_segment_metadata(&mut self) -> Result<(), Error>

Write a SegmentMetadataEvent into the current segment. Called before finalize so that single-segment traces contain runtime→worker mappings. Default is a no-op.

fn should_drain(&self) -> bool

Returns true when the flush loop should drain all thread-local buffers before the next step. For RotatingWriter this fires when the rotation period has elapsed since the last rotation or when a periodic drain interval elapses (whichever comes first). Default returns false.

fn drained(&mut self) -> Result<bool, Error>

Called by the flush loop after thread-local buffers have been drained and flushed. The writer may rotate the segment, advance a drain timer, or do nothing. Returns true if a segment rotation occurred.

impl<T> TryClone for Box<T>

where T: TryClone,

fn try_clone(&self) -> Result<Box<T>, OutOfMemory>

Attempt to clone self, returning an error if any allocation fails during cloning.

fn clone_panic_on_oom(&self) -> Self

Clone self, panicking on allocation failure.

impl<T> TryClone for Box<[T]>

where T: TryClone,

fn try_clone(&self) -> Result<Box<[T]>, OutOfMemory>

Attempt to clone self, returning an error if any allocation fails during cloning.

fn clone_panic_on_oom(&self) -> Self

Clone self, panicking on allocation failure.

impl TryClone for Box<str>

fn try_clone(&self) -> Result<Box<str>, OutOfMemory>

Attempt to clone self, returning an error if any allocation fails during cloning.

fn clone_panic_on_oom(&self) -> Self

Clone self, panicking on allocation failure.

impl<T, const N: usize> TryFrom<Box<[T]>> for Box<[T; N]>

fn try_from( boxed_slice: Box<[T]>, ) -> Result<Box<[T; N]>, <Box<[T; N]> as TryFrom<Box<[T]>>>::Error>

Attempts to convert a Box<[T]> into a Box<[T; N]>.

The conversion occurs in-place and does not require a new memory allocation.

Errors

Returns the old Box<[T]> in the Err variant if boxed_slice.len() does not equal N.

type Error = Box<[T]>

The type returned in the event of a conversion error.

impl<T, const N: usize> TryFrom<Vec<T>> for Box<[T; N]>

Available on non-no_global_oom_handling only.

fn try_from( vec: Vec<T>, ) -> Result<Box<[T; N]>, <Box<[T; N]> as TryFrom<Vec<T>>>::Error>

Attempts to convert a Vec<T> into a Box<[T; N]>.

Like Vec::into_boxed_slice, this is in-place if vec.capacity() == N, but will require a reallocation otherwise.

Errors

Returns the original Vec<T> in the Err variant if boxed_slice.len() does not equal N.

Examples

This can be used with vec! to create an array on the heap:

let state: Box<[f32; 100]> = vec![1.0; 100].try_into().unwrap();
assert_eq!(state.len(), 100);

type Error = Vec<T>

The type returned in the event of a conversion error.

impl<T, E> TryFromIterator<Result<T, E>, E> for Box<[T]>

where E: From<OutOfMemory>,

fn try_from_iter<I>(iter: I) -> Result<Box<[T]>, E>

where I: Iterator<Item = Result<T, E>>,

Creates an instance of this collection from the iter provided.

impl<T> TryFromIterator<T, OutOfMemory> for Box<[T]>

fn try_from_iter<I>(iter: I) -> Result<Box<[T]>, OutOfMemory>

where I: Iterator<Item = T>,

Creates an instance of this collection from the iter provided.

impl<T> TryNew for Box<T>

type Value = T

The inner T type that is getting wrapped into an Arc<T> or Box<T>.

fn try_new(value: T) -> Result<Box<T>, OutOfMemory>

where Box<T>: Sized,

Allocate a new Self, returning Err(OutOfMemory) on allocation failure.

impl<T, A> Unpin for Box<T, A>

where A: Allocator, T: ?Sized,

impl<'a, T, F> UnsafeFutureObj<'a, T> for Box<F>

where F: Future<Output = T> + 'a,

fn into_raw(self) -> *mut dyn Future<Output = T> + 'a

Convert an owned instance into a (conceptually owned) fat pointer.

unsafe fn drop(ptr: *mut dyn Future<Output = T> + 'a)

Drops the future represented by the given fat pointer.

impl<'a, T> UnsafeFutureObj<'a, T> for Box<dyn Future<Output = T> + 'a>

where T: 'a,

fn into_raw(self) -> *mut dyn Future<Output = T> + 'a

Convert an owned instance into a (conceptually owned) fat pointer.

unsafe fn drop(ptr: *mut dyn Future<Output = T> + 'a)

Drops the future represented by the given fat pointer.

impl<'a, T> UnsafeFutureObj<'a, T> for Box<dyn Future<Output = T> + Send + 'a>

where T: 'a,

fn into_raw(self) -> *mut dyn Future<Output = T> + 'a

Convert an owned instance into a (conceptually owned) fat pointer.

unsafe fn drop(ptr: *mut dyn Future<Output = T> + 'a)

Drops the future represented by the given fat pointer.

impl<'a, T, F> UnsafeFutureObj<'a, T> for Pin<Box<F>>

where F: Future<Output = T> + 'a,

fn into_raw(self) -> *mut dyn Future<Output = T> + 'a

Convert an owned instance into a (conceptually owned) fat pointer.

unsafe fn drop(ptr: *mut dyn Future<Output = T> + 'a)

Drops the future represented by the given fat pointer.

impl<'a, T> UnsafeFutureObj<'a, T> for Pin<Box<dyn Future<Output = T> + 'a>>

where T: 'a,

fn into_raw(self) -> *mut dyn Future<Output = T> + 'a

Convert an owned instance into a (conceptually owned) fat pointer.

unsafe fn drop(ptr: *mut dyn Future<Output = T> + 'a)

Drops the future represented by the given fat pointer.

impl<'a, T> UnsafeFutureObj<'a, T> for Pin<Box<dyn Future<Output = T> + Send + 'a>>

where T: 'a,

fn into_raw(self) -> *mut dyn Future<Output = T> + 'a

Convert an owned instance into a (conceptually owned) fat pointer.

unsafe fn drop(ptr: *mut dyn Future<Output = T> + 'a)

Drops the future represented by the given fat pointer.

impl UriMatchReplace for Box<dyn UriMatchReplace>

fn match_replace_uri<'a>( &self, uri: Cow<'a, Uri>, ) -> Result<Cow<'a, Uri>, UriMatchError<'a>>

Tries to match uri against the rule’s pattern and, on success, returns the same Uri or a new reformatted Uri.

impl<P> UserAgentProvider for Box<P>

where P: UserAgentProvider,

fn select_user_agent_profile( &self, extensions: &Extensions, ) -> Option<&UserAgentProfile>

Selects a user agent profile based on the current context.

impl<T> Value for Box<T>

where T: Value + ?Sized,

fn record(&self, key: &Field, visitor: &mut dyn Visit)

Visits this value with the given Visitor.

impl<T> Value for Box<T>

where T: Value,

const SHAPE: FieldShape<'static> = T::SHAPE

Available on non-metrique_require_explicit_impls only.

The statically-known shape of this value type for descriptor-aware sinks.

const UNIT: Unit = T::UNIT

Available on non-metrique_require_explicit_impls only.

The unit this value type is reported in.

fn write(&self, writer: impl ValueWriter)

Write the value to the metric entry. This must never panic, but invalid values may trigger a validaiton panic on [crate::EntrySink::append()] for test sinks or a tracing event on production queues.

impl<'a, V> VisitOperator<'a> for Box<V>

where V: VisitOperator<'a> + ?Sized,

type Output = <V as VisitOperator<'a>>::Output

The result type of the visitor.

fn visit_operator( &mut self, op: &Operator<'a>, ) -> <Box<V> as VisitOperator<'a>>::Output

Visits the [Operator] op using the given offset.

fn simd_visitor( &mut self, ) -> Option<&mut dyn VisitSimdOperator<'a, Output = <V as VisitOperator<'a>>::Output>>

Available on crate feature simd only.

Returns a mutable reference to a [VisitSimdOperator] visitor.

fn visit_unreachable(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_nop(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_block( &mut self, blockty: BlockType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_loop( &mut self, blockty: BlockType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_if( &mut self, blockty: BlockType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_else(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_end(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br( &mut self, relative_depth: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_if( &mut self, relative_depth: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_table( &mut self, targets: BrTable<'a>, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_return(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_call( &mut self, function_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_call_indirect( &mut self, type_index: u32, table_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_drop(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_select(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_local_get( &mut self, local_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_local_set( &mut self, local_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_local_tee( &mut self, local_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_get( &mut self, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_set( &mut self, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_load8_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_load8_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_load16_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_load16_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load8_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load8_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load16_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load16_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load32_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_load32_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_store8( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_store16( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_store8( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_store16( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_store32( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_size( &mut self, mem: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_grow( &mut self, mem: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_const( &mut self, value: i32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_const( &mut self, value: i64, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_const( &mut self, value: Ieee32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_const( &mut self, value: Ieee64, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_eqz(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_lt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_lt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_gt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_gt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_le_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_le_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_ge_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_ge_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_eqz(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_lt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_lt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_gt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_gt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_le_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_le_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_ge_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_ge_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_lt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_gt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_le(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_ge(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_lt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_gt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_le(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_ge(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_clz(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_ctz(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_popcnt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_div_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_div_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_rem_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_rem_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_and(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_or(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_xor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_shl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_shr_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_shr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_rotl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_rotr(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_clz(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_ctz(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_popcnt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_div_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_div_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_rem_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_rem_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_and(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_or(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_xor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_shl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_shr_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_shr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_rotl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_rotr(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_ceil(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_floor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_trunc(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_nearest(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_sqrt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_div(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_min(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_max(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_copysign(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_ceil(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_floor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_trunc(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_nearest(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_sqrt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_div(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_min(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_max(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_copysign(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_wrap_i64(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_f32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_f32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_f64_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_f64_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_extend_i32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_extend_i32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_f32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_f32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_f64_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_f64_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_convert_i32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_convert_i32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_convert_i64_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_convert_i64_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_demote_f64(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_convert_i32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_convert_i32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_convert_i64_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_convert_i64_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_promote_f32(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_reinterpret_f32(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_reinterpret_f64(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32_reinterpret_i32(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64_reinterpret_i64(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_extend8_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_extend16_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_extend8_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_extend16_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_extend32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_new( &mut self, struct_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_new_default( &mut self, struct_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_get( &mut self, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_get_s( &mut self, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_get_u( &mut self, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_set( &mut self, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_new( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_new_default( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_new_fixed( &mut self, array_type_index: u32, array_size: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_new_data( &mut self, array_type_index: u32, array_data_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_new_elem( &mut self, array_type_index: u32, array_elem_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_get( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_get_s( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_get_u( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_set( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_len(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_fill( &mut self, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_copy( &mut self, array_type_index_dst: u32, array_type_index_src: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_init_data( &mut self, array_type_index: u32, array_data_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_init_elem( &mut self, array_type_index: u32, array_elem_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_test_non_null( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_test_nullable( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_cast_non_null( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_cast_nullable( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_on_cast( &mut self, relative_depth: u32, from_ref_type: RefType, to_ref_type: RefType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_on_cast_fail( &mut self, relative_depth: u32, from_ref_type: RefType, to_ref_type: RefType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_any_convert_extern(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_extern_convert_any(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_i31(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i31_get_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i31_get_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_new_desc( &mut self, struct_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_new_default_desc( &mut self, struct_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_get_desc( &mut self, type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_cast_desc_eq_non_null( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_cast_desc_eq_nullable( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_on_cast_desc_eq( &mut self, relative_depth: u32, from_ref_type: RefType, to_ref_type: RefType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_on_cast_desc_eq_fail( &mut self, relative_depth: u32, from_ref_type: RefType, to_ref_type: RefType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_sat_f32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_sat_f32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_sat_f64_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_trunc_sat_f64_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_sat_f32_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_sat_f32_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_sat_f64_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_trunc_sat_f64_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_init( &mut self, data_index: u32, mem: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_data_drop( &mut self, data_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_copy( &mut self, dst_mem: u32, src_mem: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_fill( &mut self, mem: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_init( &mut self, elem_index: u32, table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_elem_drop( &mut self, elem_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_copy( &mut self, dst_table: u32, src_table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_typed_select( &mut self, ty: ValType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_typed_select_multi( &mut self, tys: Vec<ValType>, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_null( &mut self, hty: HeapType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_is_null(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_func( &mut self, function_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_fill( &mut self, table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_get( &mut self, table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_set( &mut self, table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_grow( &mut self, table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_size( &mut self, table: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_return_call( &mut self, function_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_return_call_indirect( &mut self, type_index: u32, table_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_discard( &mut self, mem: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_atomic_notify( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_atomic_wait32( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_memory_atomic_wait64( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_atomic_fence(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_load8_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_load16_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_load8_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_load16_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_load32_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_store8( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_store16( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_store8( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_store16( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_store32( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_add( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_add( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_add_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_add_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_add_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_add_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_add_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_sub( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_sub( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_sub_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_sub_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_sub_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_sub_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_sub_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_and( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_and( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_and_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_and_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_and_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_and_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_and_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_or( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_or( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_or_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_or_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_or_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_or_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_or_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_xor( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_xor( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_xor_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_xor_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_xor_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_xor_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_xor_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_xchg( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_xchg( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_xchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_xchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_xchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_xchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_xchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw_cmpxchg( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw_cmpxchg( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw8_cmpxchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32_atomic_rmw16_cmpxchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw8_cmpxchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw16_cmpxchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_atomic_rmw32_cmpxchg_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_try_table( &mut self, try_table: TryTable, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_throw( &mut self, tag_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_throw_ref(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_try( &mut self, blockty: BlockType, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_catch( &mut self, tag_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_rethrow( &mut self, relative_depth: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_delegate( &mut self, relative_depth: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_catch_all(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_get( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_set( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_add( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_sub( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_and( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_or( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_xor( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_xchg( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_global_atomic_rmw_cmpxchg( &mut self, ordering: Ordering, global_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_atomic_get( &mut self, ordering: Ordering, table_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_atomic_set( &mut self, ordering: Ordering, table_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_atomic_rmw_xchg( &mut self, ordering: Ordering, table_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_table_atomic_rmw_cmpxchg( &mut self, ordering: Ordering, table_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_get( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_get_s( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_get_u( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_set( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_add( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_sub( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_and( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_or( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_xor( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_xchg( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_struct_atomic_rmw_cmpxchg( &mut self, ordering: Ordering, struct_type_index: u32, field_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_get( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_get_s( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_get_u( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_set( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_add( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_sub( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_and( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_or( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_xor( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_xchg( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_array_atomic_rmw_cmpxchg( &mut self, ordering: Ordering, array_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_i31_shared(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_call_ref( &mut self, type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_return_call_ref( &mut self, type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_ref_as_non_null(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_on_null( &mut self, relative_depth: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_br_on_non_null( &mut self, relative_depth: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_cont_new( &mut self, cont_type_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_cont_bind( &mut self, argument_index: u32, result_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_suspend( &mut self, tag_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_resume( &mut self, cont_type_index: u32, resume_table: ResumeTable, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_resume_throw( &mut self, cont_type_index: u32, tag_index: u32, resume_table: ResumeTable, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_resume_throw_ref( &mut self, cont_type_index: u32, resume_table: ResumeTable, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_switch( &mut self, cont_type_index: u32, tag_index: u32, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_add128(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_sub128(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_mul_wide_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64_mul_wide_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

impl<'a, V> VisitSimdOperator<'a> for Box<V>

where V: VisitSimdOperator<'a> + ?Sized,

Available on crate feature simd only.

fn visit_v128_load( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load8x8_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load8x8_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load16x4_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load16x4_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load32x2_s( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load32x2_u( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load8_splat( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load16_splat( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load32_splat( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load64_splat( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load32_zero( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load64_zero( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_store( &mut self, memarg: MemArg, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load8_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load16_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load32_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_load64_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_store8_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_store16_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_store32_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_store64_lane( &mut self, memarg: MemArg, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_const( &mut self, value: V128, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_shuffle( &mut self, lanes: [u8; 16], ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_extract_lane_s( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_extract_lane_u( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_replace_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extract_lane_s( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extract_lane_u( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_replace_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extract_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_replace_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extract_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_replace_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_extract_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_replace_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_extract_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_replace_lane( &mut self, lane: u8, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_swizzle(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_splat(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_splat(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_splat(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_splat(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_splat(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_splat(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_lt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_lt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_gt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_gt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_le_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_le_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_ge_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_ge_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_lt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_lt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_gt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_gt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_le_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_le_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_ge_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_ge_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_lt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_lt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_gt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_gt_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_le_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_le_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_ge_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_ge_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_lt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_gt_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_le_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_ge_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_lt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_gt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_le(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_ge(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_eq(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_ne(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_lt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_gt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_le(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_ge(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_not(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_and(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_andnot(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_or(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_xor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_bitselect(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_v128_any_true(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_popcnt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_all_true(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_bitmask(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_narrow_i16x8_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_narrow_i16x8_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_shl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_shr_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_shr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_add_sat_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_add_sat_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_sub_sat_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_sub_sat_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_min_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_min_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_max_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_max_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_avgr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extadd_pairwise_i8x16_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extadd_pairwise_i8x16_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_q15mulr_sat_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_all_true(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_bitmask(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_narrow_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_narrow_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extend_low_i8x16_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extend_high_i8x16_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extend_low_i8x16_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extend_high_i8x16_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_shl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_shr_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_shr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_add_sat_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_add_sat_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_sub_sat_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_sub_sat_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_min_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_min_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_max_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_max_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_avgr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extmul_low_i8x16_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extmul_high_i8x16_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extmul_low_i8x16_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_extmul_high_i8x16_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extadd_pairwise_i16x8_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extadd_pairwise_i16x8_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_all_true(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_bitmask(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extend_low_i16x8_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extend_high_i16x8_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extend_low_i16x8_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extend_high_i16x8_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_shl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_shr_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_shr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_min_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_min_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_max_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_max_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_dot_i16x8_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extmul_low_i16x8_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extmul_high_i16x8_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extmul_low_i16x8_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_extmul_high_i16x8_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_all_true(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_bitmask(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extend_low_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extend_high_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extend_low_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extend_high_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_shl(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_shr_s(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_shr_u(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extmul_low_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extmul_high_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extmul_low_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_extmul_high_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_ceil(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_floor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_trunc(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_nearest(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_sqrt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_div(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_min(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_max(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_pmin(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_pmax(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_ceil(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_floor(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_trunc(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_nearest(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_abs(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_neg(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_sqrt(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_add(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_sub(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_mul(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_div(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_min(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_max(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_pmin(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_pmax(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_trunc_sat_f32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_trunc_sat_f32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_convert_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_convert_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_trunc_sat_f64x2_s_zero( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_trunc_sat_f64x2_u_zero( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_convert_low_i32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_convert_low_i32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_demote_f64x2_zero( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_promote_low_f32x4( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_relaxed_swizzle( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_relaxed_trunc_f32x4_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_relaxed_trunc_f32x4_u( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_relaxed_trunc_f64x2_s_zero( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_relaxed_trunc_f64x2_u_zero( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_relaxed_madd(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_relaxed_nmadd(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_relaxed_madd(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_relaxed_nmadd(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i8x16_relaxed_laneselect( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_relaxed_laneselect( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_relaxed_laneselect( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i64x2_relaxed_laneselect( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_relaxed_min(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f32x4_relaxed_max(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_relaxed_min(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_f64x2_relaxed_max(&mut self) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_relaxed_q15mulr_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i16x8_relaxed_dot_i8x16_i7x16_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

fn visit_i32x4_relaxed_dot_i8x16_i7x16_add_s( &mut self, ) -> <Box<V> as VisitOperator<'a>>::Output

impl VisitValueNaive for Box<str>

fn visit_value<V>(&self, visitor: V) -> <V as Visitor>::Result

where V: Visitor,

Make visitor visit the value.

impl<W> Write for Box<W>

where W: Write + ?Sized,

fn write(&mut self, buf: &[u8]) -> Result<usize, Error>

Writes a buffer into this writer, returning how many bytes were written.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn flush(&mut self) -> Result<(), Error>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.

impl<T> WriteColor for Box<T>

where T: WriteColor + ?Sized,

fn supports_color(&self) -> bool

Returns true if and only if the underlying writer supports colors.

fn supports_hyperlinks(&self) -> bool

Returns true if and only if the underlying writer supports hyperlinks.

fn set_color(&mut self, spec: &ColorSpec) -> Result<(), Error>

Set the color settings of the writer.

fn set_hyperlink(&mut self, link: &HyperlinkSpec<'_>) -> Result<(), Error>

Set the current hyperlink of the writer.

fn reset(&mut self) -> Result<(), Error>

Reset the current color settings to their original settings.

fn is_synchronous(&self) -> bool

Returns true if and only if the underlying writer must synchronously interact with an end user’s device in order to control colors. By default, this always returns false.

impl<Z> Zeroize for Box<[Z]>

where Z: Zeroize,

Available on crate feature alloc only.

fn zeroize(&mut self)

Unlike Vec, Box<[Z]> cannot reallocate, so we can be sure that we are not leaving values on the heap.

impl Zeroize for Box<str>

Available on crate feature alloc only.

fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.

impl<Z> ZeroizeOnDrop for Box<[Z]>

where Z: ZeroizeOnDrop,

Available on crate feature alloc only.