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Computed

Enum Computed 

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pub enum Computed<'d> {
    Value(Value<'d>),
    Name(&'d [u8]),
    Int(i64),
    Float(f64),
}
Expand description

One value a projection worked out.

A projection answers numbers and key names rather than places in a document, which is why it is not a Value. The two number kinds are apart because the reference writes $.a + $.b as 7 and $.list.sum() as 7.0, and a client reading the reply back as JSON sees the difference.

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Value(Value<'d>)

A value the document holds.

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Name(&'d [u8])

A key name, which is what ~ answers.

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Int(i64)

A whole number.

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Float(f64)

A number that is not whole.

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impl Computed<'_>

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pub fn write_json_at( &self, f: &Format<'_>, out: &mut Vec<u8>, depth: usize, ) -> Result<()>

This as JSON text, appended to out, as if it sat depth levels inside whatever the caller has already opened.

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A document that arrived damaged, and a number that is not finite, which JSON has no way to write.

Trait Implementations§

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impl<'d> Clone for Computed<'d>

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fn clone(&self) -> Computed<'d>

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<'d> Copy for Computed<'d>

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impl<'d> Debug for Computed<'d>

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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<'d> Freeze for Computed<'d>

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impl<'d> RefUnwindSafe for Computed<'d>

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impl<'d> Send for Computed<'d>

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impl<'d> Sync for Computed<'d>

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impl<'d> Unpin for Computed<'d>

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impl<'d> UnsafeUnpin for Computed<'d>

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impl<'d> UnwindSafe for Computed<'d>

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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.