Enum FunctionalType 

#[non_exhaustive]
pub enum FunctionalType {
    Episodic,
    UserFact,
    BehavioralRule,
    ReasoningStrategy,
    CrossSessionSummary,
    GraphFact,
}

MemGuard-inspired functional-role classification of a memory source (spec 004-16, #6086).

Each variant names one of the memory sources composed during context assembly (schedule_context_fetchers in zeph-context) — not a storage tier (CompressionLevel) and not a routing backend (MemoryRoute). The two axes are orthogonal: a zeph_conversations vector is Episodic-tier and the Episodic functional type, while a Semantic-tier consolidated fact lives under the UserFact functional type. Placed here (rather than in zeph-memory) because zeph-context — the crate that gates fetchers by this type — deliberately has no zeph-memory dependency (see the module doc above and issue #3665); zeph-memory re-exports this type at its crate root for taxonomy discoverability.

#[non_exhaustive]: additional functional sources may be added later without a breaking change; an unrecognised variant is always-composed until explicitly gated (never silently dropped).

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.

Episodic

Raw episodic conversation recall (fetch_semantic_recall → zeph_conversations).

UserFact

User preference/attribute facts (fetch_persona_facts → SQL persona_memory, not the zeph_key_facts collection — that surface is out of scope, see spec 004-16 §4).

BehavioralRule

Past user corrections (fetch_corrections → zeph_corrections).

Safety-critical: this type is never gated out by type-aware composition — context assembly always schedules fetch_corrections regardless of the active set.

ReasoningStrategy

Distilled ReasoningBank strategies (fetch_reasoning_strategies → reasoning_strategies).

CrossSessionSummary

Cross-session summaries (fetch_summaries / fetch_cross_session → zeph_session_summaries).

GraphFact

Knowledge graph facts (fetch_graph_facts → zeph_graph_entities).

Implementations

impl FunctionalType

pub const fn as_str(self) -> &'static str

Return the canonical lowercase string for this functional type.

Examples

use zeph_common::memory::FunctionalType;

assert_eq!(FunctionalType::UserFact.as_str(), "user_fact");
assert_eq!(FunctionalType::BehavioralRule.as_str(), "behavioral_rule");

Trait Implementations

impl Clone for FunctionalType

fn clone(&self) -> FunctionalType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FunctionalType

impl Debug for FunctionalType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FunctionalType

fn deserialize<__D>( __deserializer: __D, ) -> Result<FunctionalType, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for FunctionalType

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

Formats the value using the given formatter.

impl Eq for FunctionalType

impl FromStr for FunctionalType

fn from_str(s: &str) -> Result<FunctionalType, <FunctionalType as FromStr>::Err>

Strict parse: an unrecognised string is a hard error, never a silent fallback.

This is deliberate (spec 004-16 §4, critic finding S4): a config typo in default_compose_types must fail config load, not silently widen to “all types”.

type Err = String

The associated error which can be returned from parsing.

impl Hash for FunctionalType

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

where __H: Hasher,

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 FunctionalType

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FunctionalType

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FunctionalType