Struct Metadata 

pub struct Metadata {
    pub provenance: Option<Provenance>,
    pub documentation: Option<Documentation>,
    pub tags: HashSet<String>,
    pub attributes: HashMap<String, String>,
    pub version_history: Vec<VersionEntry>,
}

Rich metadata container for domains and predicates.

This structure captures all metadata associated with a symbol, including its provenance, documentation, tags, and custom attributes.

Fields

provenance: Option<Provenance>

Provenance information (who, when, where)

documentation: Option<Documentation>

Long-form documentation

tags: HashSet<String>

Tags for categorization and filtering

attributes: HashMap<String, String>

Custom key-value attributes

version_history: Vec<VersionEntry>

Version history

Implementations

impl Metadata

pub fn new() -> Self

Creates a new empty metadata container.

pub fn with_provenance(provenance: Provenance) -> Self

Creates metadata with provenance information.

pub fn add_tag(&mut self, tag: impl Into<String>)

Adds a tag to this metadata.

pub fn remove_tag(&self, tag: &str) -> bool

Removes a tag from this metadata.

pub fn has_tag(&self, tag: &str) -> bool

Checks if this metadata has a specific tag.

pub fn has_all_tags(&self, tags: &[String]) -> bool

Checks if this metadata has all of the given tags.

pub fn has_any_tag(&self, tags: &[String]) -> bool

Checks if this metadata has any of the given tags.

pub fn set_attribute( &mut self, key: impl Into<String>, value: impl Into<String>, )

Sets a custom attribute.

pub fn get_attribute(&self, key: &str) -> Option<&str>

Gets a custom attribute by key.

pub fn remove_attribute(&mut self, key: &str) -> Option<String>

Removes a custom attribute.

pub fn add_version( &mut self, version: impl Into<String>, timestamp: impl Into<String>, author: impl Into<String>, changes: impl Into<String>, )

Adds a version entry to the history.

pub fn latest_version(&self) -> Option<&VersionEntry>

Gets the latest version from the history.

pub fn set_documentation(&mut self, doc: Documentation)

Sets the documentation for this symbol.

pub fn get_summary(&self) -> Option<&str>

Gets the documentation summary, if available.

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Metadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Metadata

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Metadata

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Metadata