Struct StreamCursor 

pub struct StreamCursor {
    pub chunk_sequence: u64,
    pub byte_offset: u64,
    pub precision: StreamCursorPrecision,
    pub label: Option<String>,
}

Carries the stream cursor record payload for journal, event, or fixture surfaces. Creating or cloning it only preserves serialized SDK state; append, publish, replay, or export effects are documented on the runtime and port methods that store it.

Fields

chunk_sequence: u64

Chunk sequence used by this record or request.

byte_offset: u64

Byte size or byte limit for byte offset. Use it to enforce bounded reads, writes, summaries, or parser output.

precision: StreamCursorPrecision

Precision used by this record or request.

label: Option<String>

Optional label value. When absent, callers should use the documented default or skip that optional behavior.

Implementations

impl StreamCursor

pub fn chunk(chunk_sequence: u64) -> Self

Builds the chunk value with the documented defaults. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

pub fn byte(chunk_sequence: u64, byte_offset: u64) -> Self

Builds the byte value with the documented defaults. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

pub fn marker(chunk_sequence: u64, label: impl Into<String>) -> Self

Marker. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

Trait Implementations

impl Clone for StreamCursor

fn clone(&self) -> StreamCursor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamCursor

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamCursor

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for StreamCursor

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for StreamCursor

fn cmp(&self, other: &StreamCursor) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for StreamCursor

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for StreamCursor

fn partial_cmp(&self, other: &StreamCursor) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for StreamCursor

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for StreamCursor

impl StructuralPartialEq for StreamCursor