Struct JsHeaders 

pub struct JsHeaders { /* private fields */ }

A JavaScript wrapper for the Headers object.

Implementations

impl JsHeaders

pub fn from_http(http: HeaderMap) -> JsHeaders

Creates a JsHeaders from an internal http::HeaderMap. Takes ownership of the inner map.

impl JsHeaders

pub fn append( &mut self, key: Convert<String>, value: Convert<String>, ) -> Result<(), JsError>

Appends a new value onto an existing header inside a Headers object, or adds the header if it does not already exist.

Errors

If the key or value is not valid ASCII, an error is returned.

pub fn delete(&mut self, key: Convert<String>) -> Result<(), JsError>

Deletes a header from a Headers object.

Errors

If the key is not valid ASCII, an error is returned.

pub fn entries(&self, context: &mut Context) -> JsValue

Returns an iterator allowing to go through all key/value pairs contained in this object.

pub fn for_each( this: JsClass<JsHeaders>, callback: TypedJsFunction<(JsString, JsString, JsObject), ()>, this_arg: Option<JsValue>, context: &mut Context, ) -> Result<(), JsError>

Executes a provided function once for each key/value pair in the Headers object.

Errors

If the callback function returns an error, it is returned.

pub fn get( &self, key: JsValue, context: &mut Context, ) -> Result<JsValue, JsError>

Returns a byte string of all the values in a header within a Headers object with a given name. If the requested header doesn’t exist in the Headers object, it returns null.

Errors

If the key is not valid ASCII, an error is returned.

pub fn has(&self, key: Convert<String>) -> Result<bool, JsError>

Returns a boolean stating whether a Headers object contains a certain header.

Errors

If the key isn’t a valid header name, this will error.

Trait Implementations

impl Class for JsHeaders

const NAME: &'static str = "Headers"

The binding name of this class.

const LENGTH: usize = 2usize

The amount of arguments this class’ constructor takes. Default is 0.

fn data_constructor( this: &JsValue, args: &[JsValue], context: &mut Context, ) -> Result<JsHeaders, JsError>

Creates the internal data for an instance of this class.

fn init(builder: &mut ClassBuilder<'_>) -> Result<(), JsError>

Initializes the properties and methods of this class.

const ATTRIBUTES: Attribute = _

The property attributes of this class’ constructor in the global object. Default is writable, enumerable, configurable.

fn object_constructor( instance: &JsObject, args: &[JsValue], context: &mut Context, ) -> Result<(), JsError>

Initializes the properties of the constructed object for an instance of this class.

fn construct( new_target: &JsValue, args: &[JsValue], context: &mut Context, ) -> Result<JsObject, JsError>

Creates a new JsObject with its internal data set to the result of calling Class::data_constructor and Class::object_constructor.

fn from_data(data: Self, context: &mut Context) -> Result<JsObject, JsError>

Constructs an instance of this class from its inner native data.

impl Clone for JsHeaders

fn clone(&self) -> JsHeaders

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsHeaders

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

Formats the value using the given formatter.

impl Default for JsHeaders

fn default() -> JsHeaders

Returns the “default value” for a type.

impl Drop for JsHeaders

fn drop(&mut self)

Executes the destructor for this type.

impl Finalize for JsHeaders

fn finalize(&self)

Cleanup logic for a type.

impl Trace for JsHeaders

unsafe fn trace(&self, tracer: &mut Tracer)

Marks all contained Gcs.

unsafe fn trace_non_roots(&self)

Trace handles located in GC heap, and mark them as non root.

fn run_finalizer(&self)

Runs Finalize::finalize on this object and all contained subobjects.

impl TryFromJs for JsHeaders

fn try_from_js( value: &JsValue, context: &mut Context, ) -> Result<JsHeaders, JsError>

This function tries to convert a JavaScript value into Self.

impl JsData for JsHeaders