Struct Then4 

pub struct Then4<Z: HaystackItem, A: Matcher<Z>, B: Matcher<Z>, C: Matcher<Z>, D: Matcher<Z>>(pub PhantomData<Z>, pub PhantomData<A>, pub PhantomData<B>, pub PhantomData<C>, pub PhantomData<D>);

Tuple Fields

0: PhantomData<Z>

1: PhantomData<A>

2: PhantomData<B>

3: PhantomData<C>

4: PhantomData<D>

Trait Implementations

impl<Z: HaystackItem, A: Matcher<Z>, B: Matcher<Z>, C: Matcher<Z>, D: Matcher<Z>> Debug for Then4<Z, A, B, C, D>

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

Formats the value using the given formatter.

impl<Z: Default + HaystackItem, A: Default + Matcher<Z>, B: Default + Matcher<Z>, C: Default + Matcher<Z>, D: Default + Matcher<Z>> Default for Then4<Z, A, B, C, D>

fn default() -> Then4<Z, A, B, C, D>

Returns the “default value” for a type.

impl<Z: HaystackItem, A: Matcher<Z>, B: Matcher<Z>, C: Matcher<Z>, D: Matcher<Z>> Matcher<Z> for Then4<Z, A, B, C, D>

fn matches<'a, Y: HaystackOf<'a, Z>>(hay: &mut Y) -> bool

Checks if the start of the haystack contains a match for this Matcher. If this method successfully matches the start of the haystack, hay is progressed so that hay.item() hasn’t been matched yet. On a fail, the state of hay is undefined.

fn all_matches<'a, Y: HaystackOf<'a, Z>>(hay: &mut Y) -> Vec<usize>

Produces a Vec of all valid haystack states produced as the result of a valid match at the start of hay, used to implement backtracking. The Vec is produced in reverse priority order, so the last match has the highest priority. After calling all_matches, the state of hay itself is undefined.

fn captures<'a, Y: HaystackOf<'a, Z>>( hay: &mut Y, caps: &mut IndexedCaptures, ) -> bool

Checks if the start of the haystack contains a match for this Matcher, writing any groups to caps. Similar to matches, this method progresses hay and caps on a success. On a fail, they have undefined states.

fn all_captures<'a, Y: HaystackOf<'a, Z>>( hay: &mut Y, caps: &mut IndexedCaptures, ) -> Vec<(usize, IndexedCaptures)>

Produces a Vec of all valid captures (and accompanying haystack states) present at the start of hay. Used to implement backtracking for capturing methods. As with all_matches, the resulting Vec is produced in reverse priority order. After calling all_captures, the state of hay and caps are undefined.