Enum Attr

pub enum Attr<T> {
    DoubleQ(T, T),
    SingleQ(T, T),
    Unquoted(T, T),
    Empty(T),
}

A struct representing a key/value XML or HTML attribute.

Variants

DoubleQ(T, T)

Attribute with value enclosed in double quotes ("). Attribute key and value provided. This is a canonical XML-style attribute.

SingleQ(T, T)

Attribute with value enclosed in single quotes ('). Attribute key and value provided. This is an XML-style attribute.

Unquoted(T, T)

Attribute with value not enclosed in quotes. Attribute key and value provided. This is HTML-style attribute, it can be returned in HTML-mode parsing only. In an XML mode AttrError::UnquotedValue will be raised instead.

Attribute value can be invalid according to the HTML specification, in particular, it can contain ", ', =, <, and ` characters. The absence of the > character is nevertheless guaranteed, since the parser extracts events based on them even before the start of parsing attributes.

Empty(T)

Attribute without value. Attribute key provided. This is HTML-style attribute, it can be returned in HTML-mode parsing only. In XML mode AttrError::ExpectedEq will be raised instead.

Implementations

impl<T> Attr<T>

pub fn map<U, F>(self, f: F) -> Attr<U>

where F: FnMut(T) -> U,

Maps an Attr<T> to Attr<U> by applying a function to a contained key and value.

impl<'a> Attr<&'a [u8]>

pub const fn key(&self) -> QName<'a>

Returns the key value

pub const fn value(&self) -> &'a [u8]

Returns the attribute value. For Self::Empty variant an empty slice is returned according to the HTML specification.

Trait Implementations

impl<T: Clone> Clone for Attr<T>

fn clone(&self) -> Attr<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: AsRef<[u8]>> Debug for Attr<T>

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

Formats the value using the given formatter.

impl<'a> From<Attr<&'a [u8]>> for Attribute<'a>

fn from(attr: Attr<&'a [u8]>) -> Self

Converts to this type from the input type.

impl<T> From<Attr<T>> for (T, Option<T>)

Unpacks attribute key and value into tuple of this two elements. None value element is returned only for Attr::Empty variant.

fn from(attr: Attr<T>) -> Self

Converts to this type from the input type.

impl<T: Hash> Hash for Attr<T>

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord> Ord for Attr<T>

fn cmp(&self, other: &Attr<T>) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq for Attr<T>

fn eq(&self, other: &Attr<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl<T: PartialOrd> PartialOrd for Attr<T>

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<T: Eq> Eq for Attr<T>

impl<T> StructuralPartialEq for Attr<T>