Enum Value 

pub enum Value {
    Undefined,
    Null,
    Bool(bool),
    Int(i32),
    Float(f64),
    BigInt(JsBigInt),
    String(JsString),
    Symbol(SymbolRef),
    Object(ObjectRef),
}

A JavaScript value held by the embedder.

Variants

Undefined

Null

Bool(bool)

Int(i32)

Float(f64)

BigInt(JsBigInt)

String(JsString)

Symbol(SymbolRef)

Object(ObjectRef)

Implementations

impl Value

pub fn try_clone(&self) -> Result<Self, RuntimeError>

The same value; never fails (kept for the current API’s callers).

pub fn number(value: f64) -> Self

A number: an Int when value is an integer in i32 range other than -0, else a Float.

pub const fn as_number(&self) -> Option<f64>

The numeric value of a number.

pub fn as_object(&self) -> Option<&ObjectRef>

pub fn to_boolean(&self) -> bool

ToBoolean, which never runs JavaScript.

pub const fn type_of(&self) -> &'static str

typeof, for primitives and ordinary objects (a callable object is "object" here; Runtime::type_of asks the engine).

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

IsStrictlyEqual.

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

SameValue.

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

SameValueZero.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl From<CallableRef> for Value

fn from(value: CallableRef) -> Self

Converts to this type from the input type.

impl From<JsString> for Value

fn from(value: JsString) -> Self

Converts to this type from the input type.

impl From<ObjectRef> for Value

fn from(value: ObjectRef) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(value: i32) -> Self

Converts to this type from the input type.

impl FromJs for Value

fn from_js(_: &mut impl Js, value: Value) -> JsResult<Self>

impl IntoJs for Value

fn into_js(self, _: &mut impl Js) -> JsResult<Value>

impl PartialEq for Value

Structural equality: primitives by representation (Int(1) != Float(1.0), as the current API’s derived equality), references by identity.

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

Equality operator ==.

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

Inequality operator !=.