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NodeHandle

Struct NodeHandle 

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pub struct NodeHandle(/* private fields */);
Expand description

A detached, external handle to a HTML node, originally obtained from a Parser

It contains an identifier that uniquely identifies an HTML node. In particular, it is an index into the global HTML tag table managed by the Parser. To get a Node out of a NodeHandle, call NodeHandle::get()

A common way to model self referential/recursive graphs is to have one “global” vector of nodes, and store indices into the vector instead of references. In the case of tl, the “global” HTML tag vector is stored in the Parser and NodeHandle represents the index. Because NodeHandle is only an index and completely detached from anything, you need to pass a parser to NodeHandle::get()

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impl NodeHandle

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pub fn new(node: InnerNodeHandle) -> Self

Creates a new handle to the given node

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pub fn get<'p, 'buf, const MAX_NODES: usize, const MAX_STACK: usize, const MAX_ROOTS: usize, const MAX_IDS: usize, const MAX_CLASSES: usize, const MAX_SELECTOR_NODES: usize>( &self, parser: &'p Parser<'buf, MAX_NODES, MAX_STACK, MAX_ROOTS, MAX_IDS, MAX_CLASSES, MAX_SELECTOR_NODES>, ) -> Option<&'p Node<'buf>>

Returns a reference to the node that is associated to this specific handle

It is an error to pass in the wrong parser. It will either return None if this index points outside of the nodes table, or it will return the one it points to.

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pub fn get_mut<'p, 'buf, const MAX_NODES: usize, const MAX_STACK: usize, const MAX_ROOTS: usize, const MAX_IDS: usize, const MAX_CLASSES: usize, const MAX_SELECTOR_NODES: usize>( &self, parser: &'p mut Parser<'buf, MAX_NODES, MAX_STACK, MAX_ROOTS, MAX_IDS, MAX_CLASSES, MAX_SELECTOR_NODES>, ) -> Option<&'p mut Node<'buf>>

Returns a mutable reference to the node that is associated to this specific handle

It is an error to pass in the wrong parser. It will either return None if this index points outside of the nodes table, or it will return the one it points to.

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pub fn get_inner(&self) -> InnerNodeHandle

Returns the internal unique Node ID that maps to a specific node in the node table

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impl Clone for NodeHandle

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fn clone(&self) -> NodeHandle

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for NodeHandle

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impl Debug for NodeHandle

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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 Eq for NodeHandle

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impl Hash for NodeHandle

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for NodeHandle

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fn cmp(&self, other: &NodeHandle) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 (const: unstable) · Source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 (const: unstable) · Source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 (const: unstable) · Source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for NodeHandle

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl PartialOrd for NodeHandle

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fn partial_cmp(&self, other: &NodeHandle) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 (const: unstable) · Source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 (const: unstable) · Source§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 (const: unstable) · Source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 (const: unstable) · Source§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StructuralPartialEq for NodeHandle

Auto Trait Implementations§

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, 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.