Struct ArrayPattern 

#[non_exhaustive]
#[repr(C)]
pub struct ArrayPattern<'a> {
    pub node_id: Cell<NodeId>,
    pub span: Span,
    pub elements: Vec<'a, Option<BindingPattern<'a>>>,
    pub rest: Option<Box<'a, BindingRestElement<'a>>>,
}

[x] in const [x] = 1;

See other examples in docs for BindingPattern.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

node_id: Cell<NodeId>

span: Span

elements: Vec<'a, Option<BindingPattern<'a>>>

rest: Option<Box<'a, BindingRestElement<'a>>>

Implementations

impl ArrayPattern<'_>

pub fn is_empty(&self) -> bool

true for empty array patterns ([]).

pub fn len(&self) -> usize

The number of elements, including rest elements, in this array pattern.

impl ArrayPattern<'_>

pub fn node_id(&self) -> NodeId

Get NodeId of ArrayPattern.

Only use this method on a post-semantic AST where NodeIds are always defined.

pub fn set_node_id(&self, node_id: NodeId)

Set NodeId of ArrayPattern.

Trait Implementations

impl<'new_alloc> CloneIn<'new_alloc> for ArrayPattern<'_>

type Cloned = ArrayPattern<'new_alloc>

The type of the cloned object.

fn clone_in(&self, allocator: &'new_alloc Allocator) -> Self::Cloned

Clone self into the given allocator. allocator may be the same one that self is already in.

fn clone_in_with_semantic_ids( &self, allocator: &'new_alloc Allocator, ) -> Self::Cloned

Almost identical as clone_in, but for some special type, it will also clone the semantic ids. Please use this method only if you make sure semantic info is synced with the ast node.

impl ContentEq for ArrayPattern<'_>

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

This method tests for contents of self and other to be equal.

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

This method tests for contents of self and other not to be equal. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Debug for ArrayPattern<'a>

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

Formats the value using the given formatter.

impl<'a> Dummy<'a> for ArrayPattern<'a>

fn dummy(allocator: &'a Allocator) -> Self

Create a dummy ArrayPattern.

Does not allocate any data into arena.

impl GetSpan for ArrayPattern<'_>

fn span(&self) -> Span

Get the Span for an AST node.

impl GetSpanMut for ArrayPattern<'_>

fn span_mut(&mut self) -> &mut Span

Get a mutable reference to an AST node’s Span.

impl<'a> TakeIn<'a> for ArrayPattern<'a>

fn take_in<A>(&mut self, allocator_accessor: A) -> Self

where A: AllocatorAccessor<'a>,

Replace node with a dummy.

fn take_in_box<A>(&mut self, allocator_accessor: A) -> Box<'a, Self>

where A: AllocatorAccessor<'a>,

Replace node with a boxed dummy.

impl UnstableAddress for ArrayPattern<'_>

fn unstable_address(&self) -> Address

Get the memory Address of a reference to an AST node in arena, which is not necessarily stable.