Struct markedit::FallingEdge

pub struct FallingEdge<M> { /* fields omitted */ }

A Matcher which will detect the falling edge of another.

Examples

let matches_something = markedit::exact_text("Something");
let mut matcher = FallingEdge::new(matches_something);

// enter the paragraph
let got = matcher.matches_event(&Event::Start(Tag::Paragraph));
assert_eq!(got, false);
// then encounter some text. matches_something should have gone from false -> true
let got = matcher.matches_event(&Event::Text("Something".into()));
assert_eq!(got, false);
// then leave the paragraph. `matches_something` should go from true -> false
let got = matcher.matches_event(&Event::End(Tag::Paragraph));
assert_eq!(got, true, "We've entered a paragraph");

Methods

impl<M> FallingEdge<M>

pub const fn new(inner: M) -> Self

Create a new FallingEdge matcher.

Trait Implementations

impl<M: Clone> Clone for FallingEdge<M>

fn clone(&self) -> FallingEdge<M>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<M: Debug> Debug for FallingEdge<M>

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

Formats the value using the given formatter.

impl<M: Matcher> Matcher for FallingEdge<M>

fn matches_event(&mut self, event: &Event) -> bool

Evaluate this predicate against an event from an Event stream.

fn first_match<'src, I, E>(self, events: I) -> Option<usize> where
    Self: Sized,
    I: IntoIterator<Item = E> + 'src,
    E: Borrow<Event<'src>> + 'src, 

Find the index of the first Event which is matched by this predicate.

fn is_in<'src, I, E>(self, events: I) -> bool where
    I: IntoIterator<Item = E> + 'src,
    E: Borrow<Event<'src>>,
    Self: Sized, 

Checks whether this Matcher would match anything in a stream of Events.

fn then_start_of_next_line(self) -> StartOfNextLine<Self> where
    Self: Sized, 

Returns a Matcher which will wait until self matches, then return true at the start of the next top-level element.

fn fuse(self) -> OneShot<Self> where
    Self: Sized, 

Wraps self in a Matcher which will only ever return true once.

fn falling_edge(self) -> FallingEdge<Self> where
    Self: Sized, 

Get a Matcher which returns true when self goes from true to false.

fn and<M>(self, other: M) -> And<Self, M> where
    Self: Sized,
    M: Matcher, 

Get a Matcher which matches when self and other both match.

fn by_ref(&mut self) -> Ref<Self> where
    Self: Sized, 

Borrows the Matcher , rather than consuming it.

impl<M: PartialEq> PartialEq<FallingEdge<M>> for FallingEdge<M>

fn eq(&self, other: &FallingEdge<M>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &FallingEdge<M>) -> bool

This method tests for !=.

impl<M> StructuralPartialEq for FallingEdge<M>