Skip to main content

TapeElement

Enum TapeElement 

Source
pub enum TapeElement {
Show 13 variants StartObject(u32), EndObject(u32), StartList(u32), EndList(u32), String(u32), Number(u32), I64(i32), I32(i32), F64(u32), F32(u32), True, False, Null,
}
Expand description

We decode JSON to a flattened tape representation, allowing for efficient traversal of the JSON data

This approach is inspired by simdjson

Uses u32 for offsets to ensure TapeElement is 64-bits. A future iteration may increase this to a custom u56 type.

Variants§

§

StartObject(u32)

The start of an object, i.e. {

Contains the offset of the corresponding Self::EndObject

§

EndObject(u32)

The end of an object, i.e. }

Contains the offset of the corresponding Self::StartObject

§

StartList(u32)

The start of a list , i.e. [

Contains the offset of the corresponding Self::EndList

§

EndList(u32)

The end of a list , i.e. ]

Contains the offset of the corresponding Self::StartList

§

String(u32)

A string value

Contains the offset into the Tape string data

§

Number(u32)

A numeric value

Contains the offset into the Tape string data

§

I64(i32)

The high bits of a i64

Followed by Self::I32 containing the low bits

§

I32(i32)

A 32-bit signed integer

May be preceded by Self::I64 containing high bits

§

F64(u32)

The high bits of a 64-bit float

Followed by Self::F32 containing the low bits

§

F32(u32)

A 32-bit float or the low-bits of a 64-bit float if preceded by Self::F64

§

True

A true literal

§

False

A false literal

§

Null

A null literal

Trait Implementations§

Source§

impl Clone for TapeElement

Source§

fn clone(&self) -> TapeElement

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
Source§

impl Copy for TapeElement

Source§

impl Debug for TapeElement

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Eq for TapeElement

Source§

impl PartialEq for TapeElement

Source§

fn eq(&self, other: &TapeElement) -> 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.
Source§

impl StructuralPartialEq for TapeElement

Auto Trait Implementations§

Blanket Implementations§

§

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

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
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V