[−][src]Struct cfgrammar::yacc::grammar::SentenceGenerator
A SentenceGenerator
can generate minimal sentences for any given rule. e.g. for the
grammar:
%start A
%%
A: A B | ;
B: C | D;
C: 'x' B | 'x';
D: 'y' B | 'y' 'z';
the following are valid minimal sentences:
A: []
B: [x]
C: [x]
D: [y, x] or [y, z]
Implementations
impl<'a, StorageT: 'static + PrimInt + Unsigned> SentenceGenerator<'a, StorageT> where
usize: AsPrimitive<StorageT>,
[src]
usize: AsPrimitive<StorageT>,
pub fn min_sentence_cost(&self, ridx: RIdx<StorageT>) -> u16
[src]
What is the cost of a minimal sentence for the rule ridx
? Note that, unlike
min_sentence
, this function does not actually build a sentence and it is thus much
faster.
pub fn max_sentence_cost(&self, ridx: RIdx<StorageT>) -> Option<u16>
[src]
What is the cost of a maximal sentence for the rule ridx
? Rules which can generate
sentences of unbounded length return None; rules which can only generate maximal strings of
a finite length return a Some(u16)
.
pub fn min_sentence(&self, ridx: RIdx<StorageT>) -> Vec<TIdx<StorageT>>
[src]
Non-deterministically return a minimal sentence from the set of minimal sentences for the
rule ridx
.
pub fn min_sentences(&self, ridx: RIdx<StorageT>) -> Vec<Vec<TIdx<StorageT>>>
[src]
Return (in arbitrary order) all the minimal sentences for the rule ridx
.
Auto Trait Implementations
impl<'a, StorageT> !RefUnwindSafe for SentenceGenerator<'a, StorageT>
impl<'a, StorageT> Send for SentenceGenerator<'a, StorageT> where
StorageT: Sync,
StorageT: Sync,
impl<'a, StorageT> !Sync for SentenceGenerator<'a, StorageT>
impl<'a, StorageT> Unpin for SentenceGenerator<'a, StorageT>
impl<'a, StorageT> UnwindSafe for SentenceGenerator<'a, StorageT> where
StorageT: RefUnwindSafe,
StorageT: RefUnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,