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Field

Struct Field 

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pub struct Field<'buf> { /* private fields */ }
Expand description

An object field; upholds the invariant that the inner Element’s path ends with a key.

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impl<'buf> Field<'buf>

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pub fn into_element(self) -> Element<'buf>

Consume the Field and return the inner Element.

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pub fn element(&self) -> &Element<'buf>

Return the inner Element.

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pub fn key_span(&self) -> Span

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pub fn full_span(&self) -> Span

Returns the span covering "key": value plus any trailing comma and whitespace.

Choose the removal span based on the field’s position in its parent:

CaseSpan to erase
Remove non-last fieldfield.full_span()
Remove last field (siblings exist)fields[i-1].element().span().end .. field.element().span().end
Remove only fieldfield.element().span()

When there is no trailing comma (last field), full_span() covers "key": value only. Erasing it leaves a dangling comma on the previous field; use the predecessor’s element().span().end as the start instead.

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pub fn key(&self) -> RawStr<'buf>

Returns the key text without surrounding " delimiters.

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pub fn source_json(&self) -> &'buf str

Returns the slice of the source JSON spanning "key": value.

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impl<'buf> Clone for Field<'buf>

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fn clone(&self) -> Field<'buf>

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<'buf> Debug for Field<'buf>

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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<'buf> Eq for Field<'buf>

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impl<'buf> PartialEq for Field<'buf>

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fn eq(&self, other: &Field<'buf>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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<'buf> StructuralPartialEq for Field<'buf>

Auto Trait Implementations§

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impl<'buf> !Send for Field<'buf>

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impl<'buf> !Sync for Field<'buf>

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impl<'buf> Freeze for Field<'buf>

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impl<'buf> RefUnwindSafe for Field<'buf>

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impl<'buf> Unpin for Field<'buf>

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impl<'buf> UnsafeUnpin for Field<'buf>

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impl<'buf> UnwindSafe for Field<'buf>

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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoCaveat for T

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fn into_caveat<W>(self, warnings: Set<W>) -> Caveat<T, W>
where W: Warning,

Any type can be converted to Caveat<T> by supplying a list of Warnings.
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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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more