Enum Tier 

pub enum Tier {
    Author,
    StorageLocal,
    StorageRemote,
    Protocol(String),
}

Provenance tier — where a link came from in the trust model.

Downstream sanitizers read this to apply strictness matched to the source’s trustworthiness.

Loosest to strictest:

• Tier::Author — link came from the developer’s hand-written config
• Tier::StorageLocal — loaded from a local storage adapter
• Tier::StorageRemote — loaded from a remote config server
• Tier::Protocol — returned by a protocol handler; carries the handler name (e.g. Tier::Protocol("web".into()))

TypeScript stores the stamp in a WeakMap keyed on runtime object identity so an attacker-writable .provenance field on an incoming link cannot pre-stamp itself for free. The Rust port uses a struct field tagged #[serde(skip)] so it is excluded from JSON round-trips; stamps are set in-memory after ValidateConfig’s whitelist pass, never from input.

Variants

Author

StorageLocal

StorageRemote

Protocol(String)

Implementations

impl Tier

pub fn is_valid(&self) -> bool

Structural validity check. Rejects Tier::Protocol(String::new()) which represents a bare protocol: prefix — not a valid handler name. All other variants are always valid at the type level.

Trait Implementations

impl Clone for Tier

fn clone(&self) -> Tier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tier

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

Formats the value using the given formatter.

impl Hash for Tier

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 Tier

fn eq(&self, other: &Tier) -> 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 Eq for Tier

impl StructuralPartialEq for Tier