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JsValue

Enum JsValue 

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pub enum JsValue {
    Undefined,
    Null,
    Boolean(bool),
    String(String),
    Symbol(SymbolData),
    Number(JsNumberType),
    Object(JsObjectType),
}
Expand description

JavaScript value representation.

Represents all possible JavaScript values including primitives and objects. This is the primary value type used throughout the engine.

§Examples

use just::runner::ds::value::{JsValue, JsNumberType};

let undefined = JsValue::Undefined;
let null = JsValue::Null;
let boolean = JsValue::Boolean(true);
let string = JsValue::String("hello".to_string());
let number = JsValue::Number(JsNumberType::Integer(42));

Variants§

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Undefined

The undefined value.

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Null

The null value.

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Boolean(bool)

A boolean value (true or false).

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String(String)

A string value.

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Symbol(SymbolData)

A symbol value (ES6 symbols).

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Number(JsNumberType)

A numeric value (integer or float).

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Object(JsObjectType)

An object value (including arrays, functions, etc.).

Trait Implementations§

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impl Clone for JsValue

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for JsValue

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

Formats the value using the given formatter. Read more
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impl Display for JsValue

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

Formats the value using the given formatter. Read more
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impl PartialEq for JsValue

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Auto Trait Implementations§

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impl Freeze for JsValue

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impl !RefUnwindSafe for JsValue

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impl !Send for JsValue

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impl !Sync for JsValue

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impl Unpin for JsValue

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impl !UnwindSafe for JsValue

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.