Enum ion_rs::SystemStreamItem

source · [−]

pub enum SystemStreamItem {
    VersionMarker(u8, u8),
    SymbolTableValue(IonType),
    SymbolTableNull(IonType),
    Value(IonType),
    Null(IonType),
    Nothing,
}

Expand description

Raw stream elements that a SystemReader may encounter.

Variants

`VersionMarker(u8, u8)`

An Ion Version Marker (IVM) indicating the Ion major and minor version that were used to encode the values that follow.

`SymbolTableValue(IonType)`

A non-null Ion value that is part of an encoded local symbol table. This includes:

Top-level structs annotated with $ion_symbol_table::
Any fields nested inside such structs, but especially imports and symbols

`SymbolTableNull(IonType)`

A null Ion value that is part of an encoded local symbol table.

`Value(IonType)`

A non-null Ion value and its corresponding Ion data type.

`Null(IonType)`

A null Ion value and its corresponding Ion data type.

`Nothing`

Indicates that the reader is not positioned over anything. This can happen:

before the reader has begun processing the stream.
after the reader has stepped into a container, but before the reader has called next()
after the reader has stepped out of a container, but before the reader has called next()
after the reader has read the last item in a container

Trait Implementations

impl Clone for SystemStreamItem

fn clone(&self) -> SystemStreamItem

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for SystemStreamItem

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

Formats the value using the given formatter. Read more

impl PartialEq<SystemStreamItem> for SystemStreamItem

fn eq(&self, other: &SystemStreamItem) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &SystemStreamItem) -> bool

This method tests for !=.

impl Copy for SystemStreamItem

impl Eq for SystemStreamItem

impl StructuralEq for SystemStreamItem

impl StructuralPartialEq for SystemStreamItem

Auto Trait Implementations

impl RefUnwindSafe for SystemStreamItem

impl Send for SystemStreamItem

impl Sync for SystemStreamItem

impl Unpin for SystemStreamItem

impl UnwindSafe for SystemStreamItem

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

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

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

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

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.