Enum quick_xml::events::attributes::Attr

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

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

Variants§

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DoubleQ(T, T)

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

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SingleQ(T, T)

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

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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.

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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§

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impl<T> Attr<T>

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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.

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

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

Returns the key value

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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§

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

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: AsRef<[u8]>> Debug for Attr<T>

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

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

Converts to this type from the input type.
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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.

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

Converts to this type from the input type.
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impl<T: Hash> Hash for Attr<T>

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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<T: Ord> Ord for Attr<T>

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<T: PartialEq> PartialEq for Attr<T>

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: PartialOrd> PartialOrd for Attr<T>

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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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<T: Eq> Eq for Attr<T>

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impl<T> StructuralPartialEq for Attr<T>

Auto Trait Implementations§

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impl<T> Freeze for Attr<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Attr<T>
where T: RefUnwindSafe,

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impl<T> Send for Attr<T>
where T: Send,

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impl<T> Sync for Attr<T>
where T: Sync,

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impl<T> Unpin for Attr<T>
where T: Unpin,

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impl<T> UnwindSafe for Attr<T>
where T: UnwindSafe,

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, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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.