Struct Constraint 

pub struct Constraint { /* private fields */ }

A Constraint node (family.ungram rule Constraint).

Implementations

impl Constraint

pub fn len(&self) -> Option<Bound>

pub fn l_bracket_token(&self) -> Option<SyntaxToken>

pub fn dotdot_token(&self) -> Option<SyntaxToken>

pub fn step_token(&self) -> Option<SyntaxToken>

pub fn match_token(&self) -> Option<SyntaxToken>

pub fn r_bracket_token(&self) -> Option<SyntaxToken>

impl Constraint

pub fn min(&self) -> Option<Literal>

The lower endpoint of a scalar range — the literal before ...

pub fn max(&self) -> Option<Literal>

The upper endpoint of a scalar range — the literal after ...

pub fn step(&self) -> Option<Literal>

The step of a scalar range — the literal after the step keyword (typl reference §4.3).

pub fn match_pattern(&self) -> Option<Literal>

The pattern after the match keyword — a regex literal or a named constant reference (typl reference §5.3).

Trait Implementations

impl AstNode for Constraint

fn cast(syntax: SyntaxNode) -> Option<Self>

Wraps syntax if its kind matches this type; None otherwise.

fn syntax(&self) -> &SyntaxNode

The underlying untyped node.

impl Clone for Constraint

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Constraint

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

Formats the value using the given formatter.

impl Eq for Constraint

impl Hash for Constraint

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 Constraint

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Constraint