Enum boa::js::value::ValueData

pub enum ValueData {
    Null,
    Undefined,
    Boolean(bool),
    String(String),
    Number(f64),
    Integer(i32),
    Object(GcCell<ObjectData>),
    Function(GcCell<Function>),
}

A Javascript value

Variants

Null

null - A null value, for when a value doesn’t exist

Undefined

undefined - An undefined value, for when a field or index doesn’t exist

Boolean(bool)

boolean - A true / false value, for if a certain criteria is met

String(String)

String - A UTF-8 string, such as "Hello, world"

Number(f64)

Number - A 64-bit floating point number, such as 3.1415

Integer(i32)

Number - A 32-bit integer, such as 42

Object(GcCell<ObjectData>)

Object - An object, such as Math, represented by a binary tree of string keys to Javascript values

Function(GcCell<Function>)

Function - A runnable block of code, such as Math.sqrt, which can take some variables and return a useful value or act upon an object

Implementations

impl ValueData

pub fn new_obj(global: Option<Value>) -> Value

Returns a new empty object

pub fn is_object(&self) -> bool

Returns true if the value is an object

pub fn is_undefined(&self) -> bool

Returns true if the value is undefined

pub fn is_null(&self) -> bool

Returns true if the value is null

pub fn is_null_or_undefined(&self) -> bool

Returns true if the value is null or undefined

pub fn is_double(&self) -> bool

Returns true if the value is a 64-bit floating-point number

pub fn is_string(&self) -> bool

Returns true if the value is a string

pub fn is_true(&self) -> bool

Returns true if the value is true toBoolean

pub fn to_num(&self) -> f64

Converts the value into a 64-bit floating point number

pub fn to_int(&self) -> i32

Converts the value into a 32-bit integer

pub fn get_prop(&self, field: String) -> Option<Property>

Resolve the property in the object Returns a copy of the Property

pub fn get_field(&self, field: String) -> Value

Resolve the property in the object and get its value, or undefined if this is not an object or the field doesn’t exist

pub fn get_field_slice<'a>(&self, field: &'a str) -> Value

Resolve the property in the object and get its value, or undefined if this is not an object or the field doesn’t exist

pub fn set_field(&self, field: String, val: Value) -> Value

Set the field in the value

pub fn set_field_slice<'a>(&self, field: &'a str, val: Value) -> Value

Set the field in the value

pub fn set_prop(&self, field: String, prop: Property) -> Property

Set the property in the value

pub fn set_prop_slice<'t>(&self, field: &'t str, prop: Property) -> Property

Set the property in the value

pub fn from_json(json: JSONValue) -> ValueData

Convert from a JSON value to a JS value

pub fn to_json(&self) -> JSONValue

pub fn get_type(&self) -> &'static str

Get the type of the value

Trait Implementations

impl Add<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the + operator.

fn add(self, other: ValueData) -> ValueData

Performs the + operation.

impl BitAnd<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the & operator.

fn bitand(self, other: ValueData) -> ValueData

Performs the & operation.

impl BitOr<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the | operator.

fn bitor(self, other: ValueData) -> ValueData

Performs the | operation.

impl BitXor<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the ^ operator.

fn bitxor(self, other: ValueData) -> ValueData

Performs the ^ operation.

impl Clone for ValueData

fn clone(&self) -> ValueData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ValueData

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

Formats the value using the given formatter.

impl Display for ValueData

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

Formats the value using the given formatter.

impl Div<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the / operator.

fn div(self, other: ValueData) -> ValueData

Performs the / operation.

impl Drop for ValueData

fn drop(&mut self)

Executes the destructor for this type.

impl Finalize for ValueData

fn finalize(&self)

impl Mul<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the * operator.

fn mul(self, other: ValueData) -> ValueData

Performs the * operation.

impl Not for ValueData

type Output = ValueData

The resulting type after applying the ! operator.

fn not(self) -> ValueData

Performs the unary ! operation.

impl PartialEq<ValueData> for ValueData

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Rem<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the % operator.

fn rem(self, other: ValueData) -> ValueData

Performs the % operation.

impl Shl<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the << operator.

fn shl(self, other: ValueData) -> ValueData

Performs the << operation.

impl Shr<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the >> operator.

fn shr(self, other: ValueData) -> ValueData

Performs the >> operation.

impl Sub<ValueData> for ValueData

type Output = ValueData

The resulting type after applying the - operator.

fn sub(self, other: ValueData) -> ValueData

Performs the - operation.

impl Trace for ValueData

unsafe fn trace(&self)

Marks all contained Gcs.

unsafe fn root(&self)

Increments the root-count of all contained Gcs.

unsafe fn unroot(&self)

Decrements the root-count of all contained Gcs.

fn finalize_glue(&self)

Runs Finalize::finalize() on this object and all contained subobjects