Enum Node

pub enum Node {
    NonTerminal(NonTerminal),
    Terminal(Terminal),
}

Enum representing Nodes in a constituency tree.

Variants

NonTerminal(NonTerminal)

Nonterminal Node.

Terminal(Terminal)

Terminal Node.

Implementations

impl Node

pub fn is_terminal(&self) -> bool

Returns whether a self is Terminal.

pub fn terminal(&self) -> Option<&Terminal>

Get a Option<&Terminal>.

Returns None if self is a Node::NonTerminal.

pub fn nonterminal(&self) -> Option<&NonTerminal>

Get a Option<&NonTerminal>.

Returns None if self is a Node::Terminal.

pub fn nonterminal_mut(&mut self) -> Option<&mut NonTerminal>

Get a Option<&mut NonTerminal>.

Returns None if self is a Node::Terminal.

pub fn continuity(&self) -> Continuity

Returns whether this node’s span is continuous.

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

pub fn terminal_mut(&mut self) -> Option<&mut Terminal>

Get a Option<&mut Terminal>.

Returns None if self is a Node::NonTerminal.

pub fn label(&self) -> &str

Get the node’s label.

Returns the part-of-speech for Terminals and the node label for NonTerminals.

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

Set the node’s label.

Returns the replaced label.

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

Get this Node’s Features.

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

Get this Node’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 a Node’s span.

Trait Implementations

impl Clone for Node

fn clone(&self) -> Node

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Node

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

Formats the value using the given formatter.

impl Display for Node

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 From<Terminal> for Node

fn from(t: Terminal) -> Self

Converts to this type from the input type.

impl PartialEq for Node

fn eq(&self, other: &Node) -> 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 Node

impl StructuralPartialEq for Node