[−][src]Struct boa::builtins::property::Property
A Javascript Property AKA The Property Descriptor
[SPEC] - The Property Descriptor Specification Type
[SPEC] - Default Attribute Values
Any field in a JavaScript Property may be present or absent.
Fields
configurable: Option<bool>
If the type of this can be changed and this can be deleted
enumerable: Option<bool>
If the property shows up in enumeration of the object
writable: Option<bool>
If this property can be changed with an assignment
value: Option<Value>
The value associated with the property
get: Option<Value>
The function serving as getter
set: Option<Value>
The function serving as setter
Methods
impl Property
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pub fn is_property_key(value: &Value) -> bool
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Checks if the provided Value can be used as a property key.
pub fn new() -> Self
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Make a new property with the given value The difference between New and Default:
New: zeros everything to make an empty object Default: Defaults according to the spec
pub fn configurable(self, configurable: bool) -> Self
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Set configurable
pub fn enumerable(self, enumerable: bool) -> Self
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Set enumerable
pub fn writable(self, writable: bool) -> Self
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Set writable
pub fn value(self, value: Value) -> Self
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Set value
pub fn get(self, get: Value) -> Self
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Set get
pub fn set(self, set: Value) -> Self
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Set set
pub fn is_none(&self) -> bool
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Is this an empty Property?
true
if all fields are set to none
pub fn is_accessor_descriptor(&self) -> bool
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An accessor Property Descriptor is one that includes any fields named either [[Get]] or [[Set]].
https://tc39.es/ecma262/#sec-isaccessordescriptor
pub fn is_data_descriptor(&self) -> bool
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A data Property Descriptor is one that includes any fields named either [Value] or [[Writable]].
https://tc39.es/ecma262/#sec-isdatadescriptor
pub fn is_generic_descriptor(&self) -> bool
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https://tc39.es/ecma262/#sec-isgenericdescriptor
Trait Implementations
impl Clone for Property
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impl Debug for Property
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impl Default for Property
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fn default() -> Self
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Make a default property https://tc39.es/ecma262/#table-default-attribute-values
impl Drop for Property
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impl Finalize for Property
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impl FromValue for Property
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fn from_value(v: Value) -> Result<Self, &'static str>
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Attempt to fetch values "configurable", "enumerable", "writable" from the value, if they're not there default to false
impl ToValue for Property
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impl Trace for Property
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Auto Trait Implementations
impl !RefUnwindSafe for Property
impl !Send for Property
impl !Sync for Property
impl Unpin for Property
impl !UnwindSafe for Property
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,