Enum Visibility 

pub enum Visibility {
    And {
        and: Vec<Visibility>,
    },
    Or {
        or: Vec<Visibility>,
    },
    Not {
        not: Box<Visibility>,
    },
    Condition(VisibilityCondition),
}

Visibility rule with logical composition support.

Uses #[serde(untagged)] to support clean JSON:

• Simple: {"path": "/data/users", "operator": "not_empty"}
• Compound: {"and": [...]}
• Nested: {"not": {"path": ..., "operator": ...}}

Deserialize is hand-rolled (not derived) to produce a shape-listing error message when an unknown JSON object is encountered. The derive-based untagged impl emits “data did not match any variant of untagged enum Visibility” — useless for debugging. See D-19/F5.

Variants

And

Fields

and: Vec<Visibility>

Or

Fields

or: Vec<Visibility>

Not

Fields

not: Box<Visibility>

Condition(VisibilityCondition)

Implementations

impl Visibility

pub fn evaluate(&self, data: &Value) -> bool

Evaluates this visibility rule against handler data.

Infallible: malformed conditions, missing paths, and type mismatches all resolve to false (visibility hides the element) without panicking. This is the contract Phase 116’s renderer relies on per CONTEXT D-13.

Edge cases (per Phase 116 RESEARCH §“Visibility … TO BE ADDED” and Assumptions Log A1):

• Eq against a missing path → false (no value to compare).
• NotEq against a missing path → true (no value, so it’s “not equal” to anything).
• Numeric comparators (Gt/Lt/Gte/Lte) against non-numeric or missing → false.
• Contains on a scalar value → false.
• NotEmpty/Empty treat numbers and booleans as non-empty.

Visibility is a presentation-layer concern only. Never treat visible: false as a server-side access check — enforce authorization in the routing/handler layer, not here.

Trait Implementations

impl Clone for Visibility

fn clone(&self) -> Visibility

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Visibility

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Visibility

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl JsonSchema for Visibility

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for Visibility

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

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 Visibility