Struct rquickjs::ArrayBuffer

#[repr(transparent)]
pub struct ArrayBuffer<'js>(_);

Available on crate feature array-buffer only.

Rust representation of a javascript object of class ArrayBuffer.

Implementations

impl<'js> ArrayBuffer<'js>

pub fn new<T>( ctx: Ctx<'js>, src: impl Into<Vec<T, Global>> ) -> Result<ArrayBuffer<'js>, Error>where T: Copy,

Create array buffer from vector data

pub fn new_copy<T>( ctx: Ctx<'js>, src: impl AsRef<[T]> ) -> Result<ArrayBuffer<'js>, Error>where T: Copy,

Create array buffer from slice

pub fn len(&self) -> usize

Get the length of the array buffer in bytes.

pub fn is_empty(&self) -> bool

Returns wether an array buffer is empty.

pub fn as_bytes(&self) -> Option<&[u8]>

Returns the underlying bytes of the buffer,

Returns None if the array is detached.

pub fn as_slice<T>(&self) -> Option<&[T]>where T: TypedArrayItem,

Returns a slice if the buffer underlying buffer is properly aligned for the type and the buffer is not detached.

pub fn detach(&mut self)

Detach array buffer

pub fn as_value(&self) -> &Value<'js>

Reference to value

pub fn into_value(self) -> Value<'js>

Convert into value

pub fn from_value(value: Value<'js>) -> Result<ArrayBuffer<'js>, Error>

Convert from value

pub fn as_object(&self) -> &Object<'js>

Reference as an object

pub fn into_object(self) -> Object<'js>

Convert into an object

pub fn from_object(object: Object<'js>) -> Result<ArrayBuffer<'js>, Error>

Convert from an object

Methods from Deref<Target = Object<'js>>

pub fn prop<K, V, P>(&self, key: K, prop: V) -> Result<(), Error>where K: IntoAtom<'js>, V: AsProperty<'js, P>,

Available on crate feature properties only.

Define a property of an object

// Define readonly property without value
obj.prop("no_val", ()).unwrap();
// Define readonly property with value
obj.prop("ro_str", "Some const text").unwrap();
// Define readonly property with value and make it to be writable
obj.prop("ro_str2", Property::from("Some const text").writable()).unwrap();
// Define readonly property using getter and make it to be enumerable
obj.prop("ro_str_get", Accessor::from(|| "Some readable text").enumerable()).unwrap();
// Define readonly property using getter and setter
obj.prop("ro_str_get_set",
    Accessor::from(|| "Some text")
        .set(|new_val: String| { /* do something */ })
).unwrap();

pub fn init_def<T>(&self) -> Result<(), Error>where T: ObjectDef,

Initialize an object using ObjectDef

pub fn get<K, V>(&self, k: K) -> Result<V, Error>where K: IntoAtom<'js>, V: FromJs<'js>,

Get a new value

pub fn contains_key<K>(&self, k: K) -> Result<bool, Error>where K: IntoAtom<'js>,

check wether the object contains a certain key.

pub fn set<K, V>(&self, key: K, value: V) -> Result<(), Error>where K: IntoAtom<'js>, V: IntoJs<'js>,

Set a member of an object to a certain value

pub fn remove<K>(&self, key: K) -> Result<(), Error>where K: IntoAtom<'js>,

Remove a member of an object

pub fn is_empty(&self) -> bool

Check the object for empty

pub fn len(&self) -> usize

Get the number of properties

pub fn keys<K>(&self) -> ObjectKeysIter<'js, K> where K: FromAtom<'js>,

Get own string enumerable property names of an object

pub fn own_keys<K>(&self, filter: Filter) -> ObjectKeysIter<'js, K> where K: FromAtom<'js>,

Get own property names of an object

pub fn props<K, V>(&self) -> ObjectIter<'js, K, V> where K: FromAtom<'js>, V: FromJs<'js>,

Get own string enumerable properties of an object

pub fn own_props<K, V>(&self, filter: Filter) -> ObjectIter<'js, K, V> where K: FromAtom<'js>, V: FromJs<'js>,

Get own properties of an object

pub fn values<K>(&self) -> ObjectValuesIter<'js, K> where K: FromAtom<'js>,

Get own string enumerable property values of an object

pub fn own_values<K>(&self, filter: Filter) -> ObjectValuesIter<'js, K> where K: FromAtom<'js>,

Get own property values of an object

pub fn get_prototype(&self) -> Result<Object<'js>, Error>

Get an object prototype

pub fn set_prototype(&self, proto: &Object<'js>) -> Result<(), Error>

Set an object prototype

pub fn is_instance_of(&self, class: impl AsRef<Value<'js>>) -> bool

Check instance of object

pub fn as_value(&self) -> &Value<'js>

Reference to value

pub fn instance_of<C>(&self) -> boolwhere C: ClassDef,

Available on crate feature classes only.

Check the object for instance of

Methods from Deref<Target = Value<'js>>

pub fn ctx(&self) -> Ctx<'js>

Returns the Ctx object associated with this value.

pub fn as_bool(&self) -> Option<bool>

Try get bool from value

pub fn as_int(&self) -> Option<i32>

Try get int from value

pub fn as_float(&self) -> Option<f64>

Try get float from value

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

Try get any number from value

pub fn is_null(&self) -> bool

pub fn is_undefined(&self) -> bool

pub fn is_bool(&self) -> bool

Check if the value is a bool

pub fn is_int(&self) -> bool

Check if the value is an int

pub fn is_float(&self) -> bool

Check if the value is a float

pub fn is_number(&self) -> bool

Check if the value is an any number

pub fn is_string(&self) -> bool

Check if the value is a string

pub fn is_symbol(&self) -> bool

Check if the value is a symbol

pub fn is_object(&self) -> bool

Check if the value is an object

pub fn is_module(&self) -> bool

Check if the value is a module

pub fn is_array(&self) -> bool

Check if the value is an array

pub fn is_function(&self) -> bool

Check if the value is a function

pub fn is_error(&self) -> bool

Check if the value is an error

pub fn as_value(&self) -> &Value<'js>

Reference as value

pub fn get<T>(&self) -> Result<T, Error>where T: FromJs<'js>,

Convert from value to specified type

pub fn type_of(&self) -> Type

Get the type of value

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

Get the name of type

pub unsafe fn ref_string(&self) -> &String<'js>

Interprete as

Safety

You should be sure that the value already is of required type before to do it.

pub fn as_string(&self) -> Option<&String<'js>>

Try reinterprete as

pub unsafe fn ref_symbol(&self) -> &Symbol<'js>

Interprete as

Safety

You should be sure that the value already is of required type before to do it.

pub fn as_symbol(&self) -> Option<&Symbol<'js>>

Try reinterprete as

pub unsafe fn ref_object(&self) -> &Object<'js>

Interprete as

Safety

You should be sure that the value already is of required type before to do it.

pub fn as_object(&self) -> Option<&Object<'js>>

Try reinterprete as

pub unsafe fn ref_array(&self) -> &Array<'js>

Interprete as

Safety

You should be sure that the value already is of required type before to do it.

pub fn as_array(&self) -> Option<&Array<'js>>

Try reinterprete as

pub unsafe fn ref_function(&self) -> &Function<'js>

Interprete as

Safety

You should be sure that the value already is of required type before to do it.

pub fn as_function(&self) -> Option<&Function<'js>>

Try reinterprete as

pub unsafe fn ref_big_int(&self) -> &BigInt<'js>

Interprete as

Safety

You should be sure that the value already is of required type before to do it.

pub fn as_big_int(&self) -> Option<&BigInt<'js>>

Try reinterprete as

Trait Implementations

impl<'js, T> AsRef<[T]> for ArrayBuffer<'js>where T: TypedArrayItem,

fn as_ref(&self) -> &[T]

Converts this type into a shared reference of the (usually inferred) input type.

impl<'js> AsRef<Object<'js>> for ArrayBuffer<'js>

fn as_ref(&self) -> &Object<'js>

Converts this type into a shared reference of the (usually inferred) input type.

impl<'js> AsRef<Value<'js>> for ArrayBuffer<'js>

fn as_ref(&self) -> &Value<'js>

Converts this type into a shared reference of the (usually inferred) input type.

impl<'js> Clone for ArrayBuffer<'js>

fn clone(&self) -> ArrayBuffer<'js>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'js> Debug for ArrayBuffer<'js>

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

Formats the value using the given formatter.

impl<'js> Deref for ArrayBuffer<'js>

type Target = Object<'js>

The resulting type after dereferencing.

fn deref(&self) -> &<ArrayBuffer<'js> as Deref>::Target

Dereferences the value.

impl<'js> FromJs<'js> for ArrayBuffer<'js>

fn from_js(_: Ctx<'js>, value: Value<'js>) -> Result<ArrayBuffer<'js>, Error>

impl<'js> IntoJs<'js> for ArrayBuffer<'js>

fn into_js(self, _: Ctx<'js>) -> Result<Value<'js>, Error>

impl<'js, 't> Outlive<'t> for ArrayBuffer<'js>

type Target = ArrayBuffer<'t>

The target which has the same type as a Self but with another lifetime 't

impl<'js> PartialEq<ArrayBuffer<'js>> for ArrayBuffer<'js>

fn eq(&self, other: &ArrayBuffer<'js>) -> 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<'js, T> TryFrom<ArrayBuffer<'js>> for TypedArray<'js, T>where T: TypedArrayItem,

type Error = Error

The type returned in the event of a conversion error.

fn try_from(ab: ArrayBuffer<'js>) -> Result<TypedArray<'js, T>, Error>

Performs the conversion.

impl<'js, T> TryFrom<TypedArray<'js, T>> for ArrayBuffer<'js>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(ta: TypedArray<'js, T>) -> Result<ArrayBuffer<'js>, Error>

Performs the conversion.

impl<'js> StructuralPartialEq for ArrayBuffer<'js>