Struct ValueMap

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

A mapping from tag names to Values.

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impl ValueMap

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pub fn new() -> Self

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pub fn get<'v, E>(&'v self) -> Option<Result<E, Error>>
where E: Element + TryFrom<&'v Value, Error = Error>,

Extract a child element of a specific type.

§Returns
  • None if the element doesn’t exist
  • Some(Ok(_)) if the element exists and was successfully extracted
  • Some(Err(_)) if the element exists and extraction failed
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pub fn get_optional<'v, E>(&'v self) -> Option<Option<Result<E, Error>>>
where E: Element + TryFrom<&'v Value, Error = Error>,

Extract a non-empty child element of a specific type.

§Returns
  • None if the element doesn’t exist
  • Some(None) if the element exists and is empty
  • Some(Some(Ok(_))) if the element exists, is not empty and was successfully extracted
  • Some(Some(Err(_))) if the element exists, is not empty and extraction failed
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pub fn insert<E: Element>(&mut self, value: Value)

Insert a child value into the map.

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impl AsMut<IndexMap<ElementName<ByteString>, Value>> for ValueMap

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fn as_mut(&mut self) -> &mut IndexMap<ElementName<ByteString>, Value>

Converts this type into a mutable reference of the (usually inferred) input type.
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impl AsRef<IndexMap<ElementName<ByteString>, Value>> for ValueMap

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fn as_ref(&self) -> &IndexMap<ElementName<ByteString>, Value>

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for ValueMap

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fn clone(&self) -> ValueMap

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 Debug for ValueMap

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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 Default for ValueMap

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fn default() -> ValueMap

Returns the “default value” for a type. Read more
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impl From<IndexMap<ElementName<ByteString>, Value>> for ValueMap

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fn from(map: IndexMap<ElementName<ByteString>, Value>) -> Self

Converts to this type from the input type.
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impl PartialEq for ValueMap

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fn eq(&self, other: &ValueMap) -> 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 StructuralPartialEq for ValueMap

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.