Enum Pattern

pub enum Pattern<'a> {
    Normal(Expr<'a>),
    Placeholder(Underscore<'a>),
    Parenthesized(Parenthesized<'a>),
    Destructuring(Destructuring<'a>),
}

The kind of a pattern.

Variants

Normal(Expr<'a>)

A single expression: x.

Placeholder(Underscore<'a>)

A placeholder: _.

Parenthesized(Parenthesized<'a>)

A parenthesized pattern.

Destructuring(Destructuring<'a>)

A destructuring pattern: (x, _, ..y).

Implementations

impl<'a> Pattern<'a>

pub fn bindings(self) -> Vec<Ident<'a>>

Returns a list of all new bindings introduced by the pattern.

Trait Implementations

impl<'a> AstNode<'a> for Pattern<'a>

fn from_untyped(node: &'a SyntaxNode) -> Option<Self>

Convert a node into its typed variant.

fn to_untyped(self) -> &'a SyntaxNode

A reference to the underlying syntax node.

fn span(self) -> Span

The source code location.

impl<'a> Clone for Pattern<'a>

fn clone(&self) -> Pattern<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Pattern<'a>

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

Formats the value using the given formatter.

impl Default for Pattern<'_>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> Hash for Pattern<'a>

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<'a> Copy for Pattern<'a>