Enum PresentWhen 

pub enum PresentWhen {
    AnyNonNull(Vec<String>),
    AllNonNull(Vec<String>),
    All(Vec<PresentWhen>),
    Any(Vec<PresentWhen>),
}

A record presence predicate (spec 032, 3.4.2). Each list is non-empty; the canonical form sorts and deduplicates every field list.

Variants

AnyNonNull(Vec<String>)

AllNonNull(Vec<String>)

All(Vec<PresentWhen>)

Any(Vec<PresentWhen>)

Implementations

impl PresentWhen

pub fn canonical(&self) -> PresentWhen

The declared tree with each field list sorted and deduplicated.

pub fn shape(&self) -> (usize, usize)

Nesting depth (a leaf is 1) and the number of leaf predicates.

pub fn fields(&self, out: &mut Vec<String>)

Every field the predicate names, in reading order.

pub fn holds(&self, is_null: &dyn Fn(&str) -> bool) -> bool

Evaluate over is_null(field).

Trait Implementations

impl Clone for PresentWhen

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PresentWhen

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PresentWhen

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PresentWhen

impl JsonSchema for PresentWhen

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 PresentWhen

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for PresentWhen

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 PresentWhen