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CompiledSelector

Struct CompiledSelector 

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pub struct CompiledSelector { /* private fields */ }
Expand description

A pre-compiled CSS selector for efficient repeated matching.

Compiled selectors avoid the overhead of parsing the selector string on each query. They can be reused across multiple documents and queries.

§Examples

use scrape_core::{Soup, query::CompiledSelector};

let selector = CompiledSelector::compile("div.item > span").unwrap();
let soup = Soup::parse("<div class='item'><span>A</span></div>");

let results = soup.select_compiled(&selector);
assert_eq!(results.len(), 1);

Implementations§

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impl CompiledSelector

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pub fn compile(selector: &str) -> QueryResult<Self>

Compiles a CSS selector string.

§Errors

Returns [QueryError::InvalidSelector] if the selector syntax is invalid.

§Examples
use scrape_core::query::CompiledSelector;

let selector = CompiledSelector::compile("div.container > span").unwrap();
assert_eq!(selector.source(), "div.container > span");
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pub fn selector_list(&self) -> &SelectorList<ScrapeSelector>

Returns the underlying selector list for matching.

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pub fn source(&self) -> &str

Returns the original selector string.

§Examples
use scrape_core::query::CompiledSelector;

let selector = CompiledSelector::compile("div").unwrap();
assert_eq!(selector.source(), "div");

Trait Implementations§

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impl Clone for CompiledSelector

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fn clone(&self) -> CompiledSelector

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

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

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

Formats the value using the given formatter. Read more

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> 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, 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.