Enum ion_rs::SystemStreamItem

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

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.

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

Performs copy-assignment from source.

impl Debug for SystemStreamItem

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

Formats the value using the given formatter.

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 ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SystemStreamItem

impl Eq for SystemStreamItem

impl StructuralEq for SystemStreamItem

impl StructuralPartialEq for SystemStreamItem