Struct FormalParameter 

pub struct FormalParameter { /* private fields */ }

“Formal parameter” is a fancy way of saying “function parameter”.

In the declaration of a function, the parameters must be identifiers, not any value like numbers, strings, or objects.

function foo(formalParameter1, formalParameter2) {
}

More information:

• ECMAScript reference
• MDN documentation

Implementations

impl FormalParameter

pub fn new<D>(variable: D, is_rest_param: bool) -> FormalParameter

where D: Into<Variable>,

Creates a new formal parameter.

pub const fn variable(&self) -> &Variable

Gets the variable of the formal parameter

pub const fn init(&self) -> Option<&Expression>

Gets the initialization node of the formal parameter, if any.

pub const fn is_rest_param(&self) -> bool

Returns true if the parameter is a rest parameter.

pub const fn is_identifier(&self) -> bool

Returns true if the parameter is an identifier.

Trait Implementations

impl Clone for FormalParameter

fn clone(&self) -> FormalParameter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FormalParameter

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FormalParameter

fn deserialize<__D>( __deserializer: __D, ) -> Result<FormalParameter, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'a> From<&'a FormalParameter> for NodeRef<'a>

fn from(node: &'a FormalParameter) -> NodeRef<'a>

Converts to this type from the input type.

impl<'a> From<&'a mut FormalParameter> for NodeRefMut<'a>

fn from(node: &'a mut FormalParameter) -> NodeRefMut<'a>

Converts to this type from the input type.

impl From<FormalParameter> for FormalParameterList

fn from(parameter: FormalParameter) -> FormalParameterList

Converts to this type from the input type.

impl PartialEq for FormalParameter

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for FormalParameter

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ToInternedString for FormalParameter

fn to_interned_string(&self, interner: &Interner) -> String

Converts a given element to a string using an interner.

impl VisitWith for FormalParameter

fn visit_with<'a, V>( &'a self, visitor: &mut V, ) -> ControlFlow<<V as Visitor<'a>>::BreakTy>

where V: Visitor<'a>,

Visit this node with the provided visitor.

fn visit_with_mut<'a, V>( &'a mut self, visitor: &mut V, ) -> ControlFlow<<V as VisitorMut<'a>>::BreakTy>

where V: VisitorMut<'a>,

Visit this node with the provided visitor mutably, allowing the visitor to modify private fields.

impl StructuralPartialEq for FormalParameter