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Attribute

Struct Attribute 

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pub struct Attribute<'a> { /* private fields */ }
Expand description

One attribute of a name: what kind of thing it is, and the value.

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impl<'a> Attribute<'a>

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pub fn kind(self) -> Oid<'a>

What kind of attribute this is.

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pub fn value(self) -> AttributeValue<'a>

The value, as encoded.

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pub fn text(self, execution: &Memory) -> Result<Option<OwnedString>>

The value as text for a person to read, where it is text at all.

For display. Never for deciding that two names are the same one: see Name::matches.

§Errors

Returns a located resource error if the execution or storage budget is spent.

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pub fn folds(self, execution: &Memory) -> Result<bool>

Whether this value takes part in the preparation the profile describes, or is compared only as the bytes it was written in.

A caller explaining why a name did not match needs the same answer this comparison uses, not a guess at it: a value can be excluded for its encoding, for a code point the type prohibits, or for failing the direction step, and only one of those is visible from the outside.

§Errors

Returns a located resource error if preparation cannot be financed.

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impl<'a> Clone for Attribute<'a>

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fn clone(&self) -> Self

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<'a> Copy for Attribute<'a>

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impl<'a> Debug for Attribute<'a>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for Attribute<'a>

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impl<'a> RefUnwindSafe for Attribute<'a>

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impl<'a> Send for Attribute<'a>

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impl<'a> Sync for Attribute<'a>

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impl<'a> Unpin for Attribute<'a>

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impl<'a> UnsafeUnpin for Attribute<'a>

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impl<'a> UnwindSafe for Attribute<'a>

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 = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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.