Enum Instruction 

pub enum Instruction<S, E> {
    Accept,
    Epsilon {
        next: StateId,
    },
    Symbol {
        symbol: S,
        next: StateId,
    },
    Any {
        next: StateId,
    },
    Extension {
        extension: E,
        next: StateId,
    },
    Split {
        alternatives: Vec<StateId>,
    },
    Tag {
        capture: CaptureId,
        boundary: TagBoundary,
        next: StateId,
    },
    Anchor {
        anchor: Anchor,
        next: StateId,
    },
    Assertion {
        assertion: AssertionId,
        next: StateId,
    },
    Repeat {
        body: StateId,
        exit: StateId,
        min: usize,
        max: Option<usize>,
        greedy: bool,
    },
}

The action performed by one automaton state.

Variants

Accept

Accept the pattern.

Epsilon

Continue without consuming input.

Fields

next: StateId

Successor state.

Symbol

Consume one exact symbol.

Fields

symbol: S

Required symbol.

next: StateId

Successor after consumption.

Any

Consume any one symbol.

Fields

next: StateId

Successor after consumption.

Extension

Delegate symbol recognition to an admitted extension.

Fields

extension: E

Admitted extension matcher.

next: StateId

Successor after consumption.

Split

Choose either successor without consuming input.

Fields

alternatives: Vec<StateId>

Ordered branch entry states.

Tag

Record a capture boundary without consuming input.

Fields

capture: CaptureId

Stable capture identifier.

boundary: TagBoundary

Boundary being recorded.

next: StateId

Successor state.

Anchor

Test a subject boundary without consuming input.

Fields

anchor: Anchor

Boundary predicate.

next: StateId

Successor when the predicate holds.

Assertion

Invoke a separately compiled zero-width assertion.

Fields

assertion: AssertionId

Stable assertion identifier.

next: StateId

Successor when the assertion holds.

Repeat

Enter a bounded or unbounded repetition loop.

Fields

body: StateId

Repeated body entry.

exit: StateId

Loop exit.

min: usize

Required iteration count.

max: Option<usize>

Maximum iteration count, or no bound.

greedy: bool

Whether the body precedes the exit in execution priority.

Implementations

impl Instruction<char, TextClass>

pub fn matches(&self, symbol: char) -> bool

Tests whether this instruction consumes symbol, reusing TextClass membership.

Trait Implementations

impl<S: Clone, E: Clone> Clone for Instruction<S, E>

fn clone(&self) -> Instruction<S, E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug, E: Debug> Debug for Instruction<S, E>

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

Formats the value using the given formatter.

impl<S: Eq, E: Eq> Eq for Instruction<S, E>

impl<S: PartialEq, E: PartialEq> PartialEq for Instruction<S, E>

fn eq(&self, other: &Instruction<S, E>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<S: PartialEq, E: PartialEq> StructuralPartialEq for Instruction<S, E>