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) -> Self

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<'arbitrary> Arbitrary<'arbitrary> for FormalParameter

fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

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

Formats the value using the given formatter.

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

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::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) -> Self

Converts to this type from the input type.

impl PartialEq for FormalParameter

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FormalParameter

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FormalParameter

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::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::BreakTy>

where V: VisitorMut<'a>,

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