Trait mozjs::conversions::FromJSValConvertible

pub trait FromJSValConvertible: Sized {
    type Config;
    unsafe fn from_jsval(
        cx: *mut JSContext, 
        val: HandleValue, 
        option: Self::Config
    ) -> Result<ConversionResult<Self>, ()>;
}

A trait to convert JSVals to Rust types.

Associated Types

type Config

Optional configurable behaviour switch; use () for no configuration.

Required Methods

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: Self::Config
) -> Result<ConversionResult<Self>, ()>

Convert val to type Self. Optional configuration of type T can be passed as the option argument. If it returns Err(()), a JSAPI exception is pending. If it returns Ok(Failure(reason)), there is no pending JSAPI exception.

Implementations on Foreign Types

impl FromJSValConvertible for bool

type Config = ()

unsafe fn from_jsval(
    _cx: *mut JSContext,
    val: HandleValue,
    _option: ()
) -> Result<ConversionResult<bool>, ()>

impl FromJSValConvertible for i8

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<i8>, ()>

impl FromJSValConvertible for u8

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<u8>, ()>

impl FromJSValConvertible for i16

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<i16>, ()>

impl FromJSValConvertible for u16

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<u16>, ()>

impl FromJSValConvertible for i32

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<i32>, ()>

impl FromJSValConvertible for u32

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<u32>, ()>

impl FromJSValConvertible for i64

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<i64>, ()>

impl FromJSValConvertible for u64

type Config = ConversionBehavior

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    option: ConversionBehavior
) -> Result<ConversionResult<u64>, ()>

impl FromJSValConvertible for f32

type Config = ()

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    _option: ()
) -> Result<ConversionResult<f32>, ()>

impl FromJSValConvertible for f64

type Config = ()

unsafe fn from_jsval(
    cx: *mut JSContext,
    val: HandleValue,
    _option: ()
) -> Result<ConversionResult<f64>, ()>

impl FromJSValConvertible for String

type Config = ()

unsafe fn from_jsval(
    cx: *mut JSContext,
    value: HandleValue,
    _: ()
) -> Result<ConversionResult<String>, ()>

impl<T: FromJSValConvertible> FromJSValConvertible for Option<T>

type Config = T::Config

unsafe fn from_jsval(
    cx: *mut JSContext,
    value: HandleValue,
    option: T::Config
) -> Result<ConversionResult<Option<T>>, ()>

impl<C: Clone, T: FromJSValConvertible<Config = C>> FromJSValConvertible for Vec<T>

type Config = C

unsafe fn from_jsval(
    cx: *mut JSContext,
    value: HandleValue,
    option: C
) -> Result<ConversionResult<Vec<T>>, ()>

impl FromJSValConvertible for *mut JSObject

type Config = ()

unsafe fn from_jsval(
    cx: *mut JSContext,
    value: HandleValue,
    _option: ()
) -> Result<ConversionResult<*mut JSObject>, ()>

Implementors

• impl FromJSValConvertible for JSVal type Config = ();
• impl FromJSValConvertible for Heap<JSVal> type Config = ();