Struct NonTerminal

pub struct NonTerminal { /* private fields */ }

Struct representing a non terminal tree node.

NonTerminals are defined by their label, optional annotation and their covered span.

Implementations

impl NonTerminal

pub fn continuity(&self) -> Continuity

Returns whether this NonTerminal’s Span is continuous.

This does not return whether this nonterminal introduces a edge cutting another node’s span. It does return whether this node’s span is continuous.

pub fn features(&self) -> Option<&Features>

Get this NonTerminal’s Features.

pub fn features_mut(&mut self) -> &mut Features

Get this NonTerminal’s Features mutably.

This method initializes the features if they are None.

pub fn set_features(&mut self, features: Option<Features>) -> Option<Features>

Set this NonTerminal’s Features.

Returns the replaced value.

pub fn span(&self) -> &Span

Get the NonTerminal’s span.

pub fn label(&self) -> &str

Return the label of the NonTerminal.

pub fn set_label(&mut self, label: impl Into<String>) -> String

Return old label and replace with label.

Trait Implementations

impl Clone for NonTerminal

fn clone(&self) -> NonTerminal

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NonTerminal

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

Formats the value using the given formatter.

impl Display for NonTerminal

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

Formats the value using the given formatter.

impl From<NonTerminal> for Node

fn from(nt: NonTerminal) -> Self

Converts to this type from the input type.

impl PartialEq for NonTerminal

fn eq(&self, other: &NonTerminal) -> 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 Eq for NonTerminal