Struct Stack

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pub struct Stack<T>
where T: Cmov + Pod,
{ /* private fields */ }
Expand description

Implements a stack with a fixed maximum size. The stack access pattern and size are oblivious. The stack is implemented as a linked list on top of NRORAM.

§Invariants

    1. The linked list of elements is in monotonic decreasing order of Ids.

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impl<T> Stack<T>
where T: Cmov + Pod + Default + Clone + Debug,

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pub fn new(max_size: usize) -> Self

Creates a new stack.

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pub fn maybe_push(&mut self, real: bool, value: T)

Pushes a new element on the stack if real is true. If real is false, the element is not pushed and the stack size is not incremented.

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pub fn maybe_pop(&mut self, real: bool, out: &mut T)

Pops the top element from the stack if real is true. The popped element is returned in out. The stack size is decremented by 1 if real is true. If real is false, the element is not popped, the stack size is not decremented, and out is not modified.

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impl<T> Debug for Stack<T>
where T: Cmov + Pod + Debug,

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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<T> Length for Stack<T>
where T: Cmov + Pod,

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fn len(&self) -> usize

Returns the length of the indexable.

Auto Trait Implementations§

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impl<T> Freeze for Stack<T>

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impl<T> !RefUnwindSafe for Stack<T>

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impl<T> !Send for Stack<T>

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impl<T> !Sync for Stack<T>

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impl<T> Unpin for Stack<T>
where T: Unpin,

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impl<T> !UnwindSafe for Stack<T>

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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<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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

Performs the conversion.
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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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V