Enum TypeLabel 

pub enum TypeLabel {
    Core(EntityType),
    Custom(String),
}

A unified type label supporting both core and custom entity types.

Design Philosophy

Rather than having separate EntityType and String fields scattered throughout the codebase, TypeLabel provides a single type that:

1. Preserves type safety for known entity types via EntityType
2. Allows extensibility for domain-specific types via Custom
3. Provides consistent serialization (always as string)
4. Enables bidirectional conversion with both EntityType and String

Serialization

TypeLabel serializes as a string for interoperability:

• Core(EntityType::Person) → "PER"
• Custom("PROTEIN") → "PROTEIN"

Deserialization attempts to parse as EntityType first, falling back to Custom.

Variants

Core(EntityType)

A core entity type from the canonical taxonomy.

Custom(String)

A custom domain-specific type not in the core taxonomy.

Implementations

impl TypeLabel

pub fn custom(label: impl Into<String>) -> TypeLabel

Create a custom type label.

Note: if label matches a known EntityType label, this returns TypeLabel::Core(...) instead. Use this to keep “custom means unknown” consistent across parsing/serde roundtrips.

pub fn as_str(&self) -> &str

Get the string representation of this label.

pub const fn is_core(&self) -> bool

Check if this is a core entity type.

pub const fn is_custom(&self) -> bool

Check if this is a custom type.

pub const fn as_core(&self) -> Option<&EntityType>

Try to get the core entity type, if this is one.

pub fn to_entity_type(&self) -> EntityType

Convert to a core entity type, mapping customs to EntityType::Other.

Note: Custom types become EntityType::Other since we don’t have category info. Use Self::to_entity_type_with_category if you have category information.

pub fn to_entity_type_with_category( &self, category: EntityCategory, ) -> EntityType

Convert to a core entity type with explicit category for customs.

Trait Implementations

impl Clone for TypeLabel

fn clone(&self) -> TypeLabel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeLabel

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

Formats the value using the given formatter.

impl Default for TypeLabel

fn default() -> TypeLabel

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TypeLabel

fn deserialize<D>( deserializer: D, ) -> Result<TypeLabel, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for TypeLabel

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

Formats the value using the given formatter.

impl From<&str> for TypeLabel

fn from(s: &str) -> TypeLabel

Converts to this type from the input type.

impl From<EntityType> for TypeLabel

fn from(et: EntityType) -> TypeLabel

Converts to this type from the input type.

impl From<Option<String>> for TypeLabel

fn from(opt: Option<String>) -> TypeLabel

Converts to this type from the input type.

impl From<String> for TypeLabel

fn from(s: String) -> TypeLabel

Converts to this type from the input type.

impl FromStr for TypeLabel

type Err = Infallible

The associated error which can be returned from parsing.

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

Parses a string s to return a value of this type.

impl Hash for TypeLabel

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 TypeLabel

fn eq(&self, other: &TypeLabel) -> 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 TypeLabel

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 Eq for TypeLabel

impl StructuralPartialEq for TypeLabel