Struct Item

pub struct Item { /* private fields */ }

A single item.

Implementations

impl Item

pub fn rule(&self) -> RuleId

Get the rule this item represents.

pub fn lookahead(&self) -> TerminalId

Get the lookahead terminal of this item.

pub fn marker(&self) -> usize

Get the position of the marker within the rule.

pub fn action(&self) -> Option<(Symbol, Action)>

Get the action associated with this item.

pub fn set_action(&mut self, action: Option<(Symbol, Action)>)

Change the action of this item.

pub fn pretty<'a>( &'a self, grammar: &'a Grammar, ) -> Pretty<&'a Grammar, &'a Self>

Get a pretty printer for this item.

pub fn is_shift(&self) -> bool

Whether this item has a shift action.

pub fn is_reduce(&self) -> bool

Whether this item has a reduce action.

pub fn has_action(&self) -> bool

Whether this item has an action.

Trait Implementations

impl Clone for Item

fn clone(&self) -> Item

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Item

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

Formats the value using the given formatter.

impl Hash for Item

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Item

fn eq(&self, other: &Item) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Item

impl Eq for Item

impl StructuralPartialEq for Item