Struct FormalParameters 

#[repr(C)]
pub struct FormalParameters<'a> {
    pub span: Span,
    pub items: Vec<'a, FormalParameter<'a>>,
    pub rest: Option<Box<'a, BindingRestElement<'a>>>,
    pub kind: FormalParameterKind,
}

https://tc39.es/ecma262/#prod-FormalParameters

Fields

span: Span

items: Vec<'a, FormalParameter<'a>>

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

kind: FormalParameterKind

Implementations

impl<'a> FormalParameters<'a>

pub fn parameters_count(&self) -> usize

Number of parameters bound in this parameter list.

pub fn iter_bindings(&self) -> impl Iterator<Item = &BindingPattern<'a>>

Iterates over all bound parameters, including rest parameters.

impl FormalParameters<'_>

pub fn is_empty(&self) -> bool

true if no parameters are bound.

pub fn has_parameter(&self) -> bool

true if at least one parameter is bound, including rest bindings.

Trait Implementations

impl<'a> BoundNames<'a> for FormalParameters<'a>

fn bound_names<F>(&self, f: &mut F)

where F: FnMut(&BindingIdentifier<'a>),

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

type Cloned = FormalParameters<'new_alloc>

The type of the cloned object.

fn clone_in( &self, allocator: &'new_alloc Allocator, ) -> <FormalParameters<'_> as CloneIn<'new_alloc>>::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, ) -> <FormalParameters<'_> as CloneIn<'new_alloc>>::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 FormalParameters<'_>

fn content_eq(&self, other: &FormalParameters<'_>) -> 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 FormalParameters<'a>

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

Formats the value using the given formatter.

impl<'a> Dummy<'a> for FormalParameters<'a>

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

Create a dummy FormalParameters.

Does not allocate any data into arena.

impl Gen for FormalParameters<'_>

fn gen(&self, p: &mut Codegen<'_>, ctx: Context)

Generate code for an AST node.

fn print(&self, p: &mut Codegen<'_>, ctx: Context)

Generate code for an AST node. Alias for gen.

impl GetSpan for FormalParameters<'_>

fn span(&self) -> Span

Get the Span for an AST node.

impl GetSpanMut for FormalParameters<'_>

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

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

impl IsSimpleParameterList for FormalParameters<'_>

fn is_simple_parameter_list(&self) -> bool

impl<'a> TakeIn<'a> for FormalParameters<'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 FormalParameters<'_>

fn unstable_address(&self) -> Address

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