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ArgContiguousBytesLike

rustpython_vm::function

Struct ArgContiguousBytesLike 

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pub struct ArgContiguousBytesLike(/* private fields */);
Expand description

A bytes-like object asked for as PyBUF_CONTIG_RO, which is what a shape is requested with rather than assumed.

Methods from Deref<Target = ArgBytesLike>§

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pub fn borrow_buf(&self) -> BorrowedValue<'_, [u8]>

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pub fn with_ref<F, R>(&self, f: F) -> R
where F: FnOnce(&[u8]) -> R,

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pub fn borrow_buf_unlocked( &self, vm: &VirtualMachine, ) -> PyResult<UnlockedBuf<'_>>

The bytes to hand to an operation that may wait, and whatever keeps them readable while it does.

borrow_buf may answer with a lock that every other thread writing to the same object waits on, and a thread waiting on a lock never reaches a safepoint, so keeping one across a wait for a peer, a pipe or a signal stops the world from being stopped at all. Bytes reached that way are copied out first. Bytes that lock nothing – an immutable object’s – are borrowed where they lie, which is all CPython holds in either case.

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pub fn len(&self) -> usize

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pub fn itemsize(&self) -> usize

The width of one item. Callers that read the buffer as bytes rather than as whatever it holds have to ask, since a contiguous buffer of wider items is contiguous all the same.

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pub fn is_empty(&self) -> bool

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pub fn as_object(&self) -> &PyObject

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pub fn source_object(&self) -> &PyObject

The object whose storage is borrowed while this buffer is read: a view borrows the object it looks at, not itself.

Trait Implementations§

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impl Debug for ArgContiguousBytesLike

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

Formats the value using the given formatter. Read more
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impl Deref for ArgContiguousBytesLike

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type Target = ArgBytesLike

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl Traverse for ArgContiguousBytesLike

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fn traverse(&self, tracer_fn: &mut TraverseFn<'_>)

impl traverse() with caution! Following those guideline so traverse doesn’t cause memory error!: Read more
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fn clear(&mut self, _out: &mut Vec<PyObjectRef>)

Extract all owned child PyObjectRefs for circular reference resolution (tp_clear). Called just before object deallocation to break circular references. Default implementation does nothing.
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impl<'a> TryFromBorrowedObject<'a> for ArgContiguousBytesLike

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fn try_from_borrowed_object( vm: &VirtualMachine, obj: &'a PyObject, ) -> PyResult<Self>

Attempt to convert a Python object to a value of this type.

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T, U> ExactFrom<T> for U
where U: TryFrom<T>,

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fn exact_from(value: T) -> U

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impl<T, U> ExactInto<U> for T
where U: ExactFrom<T>,

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fn exact_into(self) -> U

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromArgOptional for T
where T: TryFromObject,

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type Inner = T

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fn from_inner(x: T) -> T

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impl<T> FromArgs for T
where T: TryFromObject,

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fn arity() -> RangeInclusive<usize> ⓘ

The range of positional arguments permitted by the function signature. Read more
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fn from_args( vm: &VirtualMachine, args: &mut FuncArgs, ) -> Result<T, ArgumentError>

Extracts this item from the next argument(s).
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const PARAMS: Option<&'static [Param]> = None

Parameters this type contributes to a text signature. Read more
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impl<T> Helper for T

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impl<T, U> ImaginaryInto<U> for T
where U: ImaginaryFrom<T>,

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fn imaginary_into(self) -> U

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> OverflowingInto<U> for T
where U: OverflowingFrom<T>,

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fn overflowing_into(self) -> (U, bool)

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impl<T> PrimitiveIntRandomBounds for T

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impl<T> PrimitiveSignedRandomBounds for T

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impl<T> PyThreadingConstraint for T

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T, U> RoundingInto<U> for T
where U: RoundingFrom<T>,

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fn rounding_into(self, rm: RoundingMode) -> (U, Ordering)

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impl<T, U> SaturatingInto<U> for T
where U: SaturatingFrom<T>,

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fn saturating_into(self) -> U

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impl<T> ToDebugString for T
where T: Debug,

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fn to_debug_string(&self) -> String

Returns the String produced by Ts Debug implementation.

§Examples
use malachite_base::strings::ToDebugString;

assert_eq!([1, 2, 3].to_debug_string(), "[1, 2, 3]");
assert_eq!(
    [vec![2, 3], vec![], vec![4]].to_debug_string(),
    "[[2, 3], [], [4]]"
);
assert_eq!(Some(5).to_debug_string(), "Some(5)");
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T> TryFromObject for T
where T: for<'a> TryFromBorrowedObject<'a>,

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fn try_from_object( vm: &VirtualMachine, obj: PyObjectRef, ) -> Result<T, PyRef<PyBaseException>>

Attempt to convert a Python object to a value of this type.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U> WrappingInto<U> for T
where U: WrappingFrom<T>,

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fn wrapping_into(self) -> U