Struct boa_engine::property::PropertyDescriptor

impl PropertyDescriptor

pub const fn is_accessor_descriptor(&self) -> bool

An accessor property descriptor is one that includes any fields named either [[Get]] or [[Set]].

More information:

ECMAScript reference

pub const fn is_data_descriptor(&self) -> bool

A data property descriptor is one that includes any fields named either [[Value]] or [[Writable]].

More information:

ECMAScript reference

pub const fn is_generic_descriptor(&self) -> bool

A generic property descriptor is one that is neither a data descriptor nor an accessor descriptor.

More information:

ECMAScript reference

pub const fn is_empty(&self) -> bool

Returns if the property descriptor is empty.

pub const fn enumerable(&self) -> Option<bool>

Returns if the property descriptor is enumerable. Returns None if the enumerable field is not set.

pub const fn configurable(&self) -> Option<bool>

Returns if the property descriptor is configurable. Returns None if the configurable field is not set.

pub const fn writable(&self) -> Option<bool>

Returns if the property descriptor is writable. Returns None if the writable field is not set or the property descriptor is not a data descriptor.

pub const fn value(&self) -> Option<&JsValue>

Returns the value of the property descriptor. Returns None if the value is not set or the property descriptor is not a data descriptor.

pub const fn get(&self) -> Option<&JsValue>

Returns the getter of the property descriptor. Returns None if the getter is not set or the property descriptor is not an accessor descriptor.

pub const fn set(&self) -> Option<&JsValue>

Returns the setter of the property descriptor. Returns None if the setter is not set or the property descriptor is not an accessor descriptor.

pub fn expect_enumerable(&self) -> bool

Returns if the property descriptor is enumerable.

§Panics

Panics if the enumerable field is not set.

pub fn expect_configurable(&self) -> bool

Returns if the property descriptor is configurable.

§Panics

Panics if the configurable field is not set.

pub fn expect_writable(&self) -> bool

Returns if the property descriptor is writable.

§Panics

Panics if the writable field is not set.

pub fn expect_value(&self) -> &JsValue

Returns the value of the property descriptor.

§Panics

Panics if the value field is not set.

pub fn expect_get(&self) -> &JsValue

Returns the getter of the property descriptor.

§Panics

Panics if the getter field is not set.

pub fn expect_set(&self) -> &JsValue

Returns the setter of the property descriptor.

§Panics

Panics if the setter field is not set.

pub const fn kind(&self) -> &DescriptorKind

Returns the kind of the property descriptor.

pub fn builder() -> PropertyDescriptorBuilder

Creates a new PropertyDescriptorBuilder.

pub fn into_accessor_defaulted(self) -> Self

Creates an accessor property descriptor with default values.

pub fn into_data_defaulted(self) -> Self

Creates a data property descriptor with default values.

pub fn complete_property_descriptor(self) -> Self

Creates an generic property descriptor with default values.

pub fn fill_with(&mut self, desc: &Self)

Fills the fields of the PropertyDescriptor that are not set with fields from the given PropertyDescriptor.

§Panics

Panics if the given PropertyDescriptor is not compatible with this one.

Trait Implementations§

impl Clone for PropertyDescriptor

fn clone(&self) -> PropertyDescriptor

Returns a copy of the value. Read more

1.0.0 · source§

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

Performs copy-assignment from source. Read more

impl Debug for PropertyDescriptor

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

Formats the value using the given formatter. Read more

impl Default for PropertyDescriptor

fn default() -> PropertyDescriptor

Returns the “default value” for a type. Read more

impl Drop for PropertyDescriptor

fn drop(&mut self)

Executes the destructor for this type. Read more

impl Finalize for PropertyDescriptor

fn finalize(&self)

Cleanup logic for a type.

impl From<PropertyDescriptorBuilder> for PropertyDescriptor

fn from(builder: PropertyDescriptorBuilder) -> Self

Converts to this type from the input type.

impl Trace for PropertyDescriptor

unsafe fn trace(&self, tracer: &mut Tracer)

Marks all contained Gcs. Read more

unsafe fn trace_non_roots(&self)

Trace handles located in GC heap, and mark them as non root. Read more

fn run_finalizer(&self)

Runs Finalize::finalize on this object and all contained subobjects.

Auto Trait Implementations§

impl !UnwindSafe for PropertyDescriptor

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more

impl<T> Conv for T

fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

impl<T> Pipe for T
where T: ?Sized,

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more

fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R ) -> R
where Self: BorrowMut, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.

fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.

impl<T> Tap for T

fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more

fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more

fn tap_borrow(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow, B: ?Sized,

Immutable access to the Borrow of a value. Read more

fn tap_borrow_mut(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut, B: ?Sized,

Mutable access to the BorrowMut of a value. Read more

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more

fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.

fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.

fn tap_borrow_dbg(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.

fn tap_borrow_mut_dbg(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.

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

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> TryConv for T

fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more

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type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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Performs the conversion.

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