Struct JSArrayBuffer

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pub struct JSArrayBuffer { /* private fields */ }

Expand description

A JavaScript array buffer.

Implementations§

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impl JSArrayBuffer

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pub fn from_object(object: JSObject) -> Self

Creates a new JSArrayBuffer object from a given JSObject.

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pub fn len(&self) -> JSResult<usize>

Gets the length of the ArrayBuffer.

§Example

use rust_jsc::{JSContext, JSArrayBuffer};

let ctx = JSContext::new();
let array_buffer = ctx.evaluate_script("new ArrayBuffer(10)", None).unwrap();
let array_buffer = JSArrayBuffer::from_object(array_buffer.as_object().unwrap());
assert_eq!(array_buffer.len().unwrap(), 10);

§Errors

If an exception is thrown while getting the length. A JSError will be returned.

§Returns

The length of the ArrayBuffer object or 0 if the object is not an ArrayBuffer object.

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pub fn bytes(&self) -> JSResult<&mut [u8]>

Gets the bytes of the ArrayBuffer.

§Example

use rust_jsc::{JSContext, JSArrayBuffer};

let ctx = JSContext::new();
let array_buffer = ctx.evaluate_script("new ArrayBuffer(10)", None).unwrap();
let array_buffer = JSArrayBuffer::from_object(array_buffer.as_object().unwrap());
assert_eq!(array_buffer.bytes().unwrap().len(), 10);

§Errors

If an exception is thrown while getting the bytes. A JSError will be returned.

§Returns

The bytes of the ArrayBuffer object or null if the object is not an ArrayBuffer object.

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pub fn is_detached(&self) -> bool

Checks if the ArrayBuffer is detached. Detached ArrayBuffers are ArrayBuffers that have been detached from their backing store. This can happen when the backing store is transferred to another object.

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pub fn new(ctx: &JSContext, bytes: &mut [u8]) -> JSResult<Self>

Gets the bytes of the ArrayBuffer as a Vec.

§Example

use rust_jsc::{JSContext, JSArrayBuffer};

let ctx = JSContext::new();
let array_buffer = ctx.evaluate_script("new ArrayBuffer(10)", None).unwrap();
let array_buffer = JSArrayBuffer::from_object(array_buffer.as_object().unwrap());
assert_eq!(array_buffer.as_vec().unwrap().len(), 10);

§Errors

If an exception is thrown while getting the bytes. A JSError will be returned.

§Returns

The bytes of the ArrayBuffer object as a Vec or null if the object is not an ArrayBuffer object.

Source

pub fn as_vec(&self) -> JSResult<Vec<u8>>

Gets the bytes of the ArrayBuffer as a Vec.

§Example

use rust_jsc::{JSContext, JSArrayBuffer};

let ctx = JSContext::new();
let array_buffer = ctx.evaluate_script("new ArrayBuffer(10)", None).unwrap();
let array_buffer = JSArrayBuffer::from_object(array_buffer.as_object().unwrap());
assert_eq!(array_buffer.as_vec().unwrap().len(), 10);