Enum ContextFidelity 

#[non_exhaustive]
#[repr(u8)]
pub enum ContextFidelity {
    Full = 0,
    Compressed = 1,
    Placeholder = 2,
}

Fidelity level assigned to a message in the context window.

Determines how a historical message is rendered before sending to the LLM. Assigned by FidelityScorer based on relevance signals; stored in MessageMetadata.fidelity_tag for debug tracing and compaction filtering.

Distinct from zeph_memory::optical_forgetting::ContentFidelity, which tracks long-term memory store preservation (optical forgetting): ContextFidelity governs rendering in the active context window; ContentFidelity governs what is durably stored in the SQLite memory store.

Examples

use zeph_common::fidelity::ContextFidelity;

let level = ContextFidelity::default();
assert_eq!(level, ContextFidelity::Full);

let compressed: u8 = ContextFidelity::Compressed as u8;
assert_eq!(compressed, 1);

assert_eq!(ContextFidelity::from_u8(0), ContextFidelity::Full);
assert_eq!(ContextFidelity::from_u8(1), ContextFidelity::Compressed);
assert_eq!(ContextFidelity::from_u8(255), ContextFidelity::Full); // unknown → Full

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Full = 0

Original message content, unchanged.

Compressed = 1

Content truncated to compressed_max_tokens tokens (or replaced by deferred_summary when available).

Placeholder = 2

Content replaced by a compact placeholder tag; no semantic content survives.

Implementations

impl ContextFidelity

pub fn from_u8(v: u8) -> Self

Convert a database integer to a fidelity level.

Unknown values map to Full as the safe default, preserving forward compatibility when new variants are added.

Note for variant authors: update this match when adding new variants, or old code will silently upgrade persisted values to Full.

Examples

use zeph_common::fidelity::ContextFidelity;

assert_eq!(ContextFidelity::from_u8(0), ContextFidelity::Full);
assert_eq!(ContextFidelity::from_u8(1), ContextFidelity::Compressed);
assert_eq!(ContextFidelity::from_u8(2), ContextFidelity::Placeholder);
assert_eq!(ContextFidelity::from_u8(99), ContextFidelity::Full);

Trait Implementations

impl Clone for ContextFidelity

fn clone(&self) -> ContextFidelity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContextFidelity

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

Formats the value using the given formatter.

impl Default for ContextFidelity

fn default() -> ContextFidelity

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ContextFidelity

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for ContextFidelity

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 PartialEq for ContextFidelity

fn eq(&self, other: &ContextFidelity) -> 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 Serialize for ContextFidelity

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ContextFidelity

impl Eq for ContextFidelity

impl StructuralPartialEq for ContextFidelity