Struct JsValueStore 

pub struct JsValueStore(/* private fields */);

A JsValue-like structure that can rebuild its value given any Context. It essentially stores the value itself and its original type. During reconstruction, the constructors of the new Context will be used.

This follows the rules of the structured clone algorithm, but does not require a Context to copy/move, and can be Send between threads.

It is not serializable as it allows recursive values.

To transform a JsValue into a JsValueStore, the application MUST pass in the context of the initial value. To transform it back to a JsValue, the application MUST pass the context that will contain all prototypes for the new types (e.g. Object).

Implementations

impl JsValueStore

pub fn try_from_js( value: &JsValue, context: &mut Context, transfer: Vec<JsValue>, ) -> Result<JsValueStore, JsError>

Create a context-free JsValue equivalent from an existing JsValue and the Context that was used to create it. The transfer argument allows for transferring ownership of the inner data to the context-free value instead of cloning it. By default, if a value isn’t in the transfer vector, it is cloned.

Errors

Any errors related to transferring or cloning a value’s inner data.

Trait Implementations

impl Clone for JsValueStore

fn clone(&self) -> JsValueStore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsValueStore

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

Formats the value using the given formatter.

impl TryIntoJs for JsValueStore

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

This function tries to convert a Self into JsValue.