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 placeholder() -> Self

A placeholder for this node type. If the underlying CST has syntax errors or did not come from the parser, the AST is not guaranteed to be valid. But instead of panicking in that case, we return placeholder nodes.

fn span(self) -> Span

The source code location.

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

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Pattern<'a>

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

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

Formats the value using the given formatter.

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.