Struct quickjs_rusty::value::OwnedJsValue

pub struct OwnedJsValue { /* private fields */ }

OwnedJsValue wraps a Javascript value owned by the QuickJs runtime.

Guarantees cleanup of resources by dropping the value from the runtime.

Implementations

impl OwnedJsValue

pub fn context(&self) -> *mut JSContext

pub fn new(context: *mut JSContext, value: JSValue) -> Self

Create a new OwnedJsValue from a JsValue. This will NOT increase the ref count of the underlying value. So you have to manage memory yourself. Be careful when using this.

pub fn own(context: *mut JSContext, value: &JSValue) -> Self

Create a new OwnedJsValue from a JsValue. This will increase the ref count of the underlying value.

pub fn tag(&self) -> JsTag

pub unsafe fn as_inner(&self) -> &JSValue

Get the inner JSValue without increasing ref count.

Unsafe because the caller must ensure proper memory management.

pub unsafe fn extract(self) -> JSValue

Extract the underlying JSValue.

Unsafe because the caller must ensure memory management. (eg JS_FreeValue)

pub fn replace(&mut self, new: JSValue)

Replace the underlying JSValue. This will decrease the ref count of the old value but remain the ref count of the new value.

pub fn is_null(&self) -> bool

Check if this value is null.

pub fn is_undefined(&self) -> bool

Check if this value is undefined.

pub fn is_bool(&self) -> bool

Check if this value is bool.

pub fn is_int(&self) -> bool

Check if this value is int.

pub fn is_float(&self) -> bool

Check if this value is float.

pub fn is_exception(&self) -> bool

Check if this value is a Javascript exception.

pub fn is_object(&self) -> bool

Check if this value is a Javascript object.

pub fn is_array(&self) -> bool

Check if this value is a Javascript array.

pub fn is_function(&self) -> bool

Check if this value is a Javascript function.

pub fn is_promise(&self) -> bool

Check if this value is a Javascript promise.

pub fn is_module(&self) -> bool

Check if this value is a Javascript module.

pub fn is_string(&self) -> bool

Check if this value is a Javascript string.

pub fn is_compiled_function(&self) -> bool

Check if this value is a bytecode compiled function.

pub fn to_bool(&self) -> Result<bool, ValueError>

Convert this value into a bool

pub fn to_int(&self) -> Result<i32, ValueError>

Convert this value into an i32

pub fn to_float(&self) -> Result<f64, ValueError>

Convert this value into an f64

pub fn to_string(&self) -> Result<String, ValueError>

Convert this value into a string

pub fn to_array(&self) -> Result<OwnedJsArray, ValueError>

pub fn try_into_object(self) -> Result<OwnedJsObject, ValueError>

Try convert this value into a object

pub fn to_date(&self) -> Result<DateTime<Utc>, ValueError>

pub fn to_bigint(&self) -> Result<BigInt, ValueError>

pub fn try_into_function(self) -> Result<JsFunction, ValueError>

Try convert this value into a function

pub fn try_into_promise(self) -> Result<OwnedJsPromise, ValueError>

Try convert this value into a function

pub fn try_into_compiled_function( self, ) -> Result<JsCompiledFunction, ValueError>

Try convert this value into a compiled function

pub fn try_into_module(self) -> Result<JsModule, ValueError>

Try convert this value into a module

pub fn js_to_string(&self) -> Result<String, ExecutionError>

Call the Javascript .toString() method on this value.

pub fn to_json_string(&self, space: u8) -> Result<String, ExecutionError>

Call the Javascript JSON.stringify() method on this value.

Trait Implementations

impl Clone for OwnedJsValue

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OwnedJsValue

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

Formats the value using the given formatter.

impl Drop for OwnedJsValue

fn drop(&mut self)

Executes the destructor for this type.

impl<T> From<(*mut JSContext, T)> for OwnedJsValue

where T: ToOwnedJsValue,

fn from((context, value): (*mut JSContext, T)) -> Self

Converts to this type from the input type.

impl PartialEq for OwnedJsValue

fn eq(&self, other: &Self) -> 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 ToOwnedJsValue for OwnedJsValue

for some cases like HashMap<String, OwnedJsValue>

fn to_owned(self, _: *mut JSContext) -> OwnedJsValue

impl TryFrom<OwnedJsValue> for BigInt

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for BigInt

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for DateTime<Utc>

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl<K: From<String> + PartialEq + Eq + Hash, V: TryFrom<OwnedJsValue, Error = ValueError>> TryFrom<OwnedJsValue> for HashMap<K, V>

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for JsCompiledFunction

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for JsFunction

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for JsModule

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for OwnedJsArray

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for OwnedJsObject

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for OwnedJsPromise

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for String

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl<T: TryFrom<OwnedJsValue, Error = ValueError>> TryFrom<OwnedJsValue> for Vec<T>

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for bool

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for f64

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for i128

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for i32

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for i64

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for u128

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OwnedJsValue> for u64

type Error = ValueError

The type returned in the event of a conversion error.

fn try_from(value: OwnedJsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl Send for OwnedJsValue

impl Sync for OwnedJsValue