Struct Anchor 

pub struct Anchor<'a, 'b, T> {
    pub iref: &'a mut InputRef<'b, T>,
    pub index: usize,
}

Anchoring the current index of the cursor. Restore index when dropped.

Fields

iref: &'a mut InputRef<'b, T>

Reference of InputRef.

index: usize

The index which is used to restore the cursor when drop.

Implementations

impl<'a, 'b, T> Anchor<'a, 'b, T>

pub fn new(iref: &'a mut InputRef<'b, T>) -> Self

Create a new Anchor from InputRef.

pub fn renew(&mut self)

Set the current index to the anchor.

pub fn forget(self) -> &'a mut InputRef<'b, T>

Forget the anchor. The current index of the cursor is unchanged.

pub fn range(&self) -> Range<usize>

Get the range of the start of the anchor to the current index.

Methods from Deref<Target = &'a mut InputRef<'b, T>>

pub fn scope_cursor_mut<O>( &mut self, jail: impl FnOnce(&mut CursorRef<'_, T>) -> O, ) -> O

Do something with a mutable reference of Cursor. This crate is safe if you can’t bring arguments to outside. I believe it is true.

pub fn scope_cursor<O>(&self, jail: impl FnOnce(&CursorRef<'_, T>) -> O) -> O

Do something with a reference of Cursor. This crate is safe if you can’t bring arguments to outside. I believe it is true.

pub fn read(&mut self) -> impl Future<Output = ()> + '_

Stop parsing until the buffer is extended.

pub fn read_n(&mut self, at_least: usize) -> impl Future<Output = ()> + '_

Stop parsing until the buf.len() >= index + at_least.

Trait Implementations

impl<'a, 'b, T> Deref for Anchor<'a, 'b, T>

type Target = &'a mut InputRef<'b, T>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, 'b, T> DerefMut for Anchor<'a, 'b, T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'a, 'b, T> Drop for Anchor<'a, 'b, T>

fn drop(&mut self)

Executes the destructor for this type.