Enum Expr 

pub enum Expr {
    Lit(LitExpr),
    Ref(RefExpr),
    Fn(FnExpr),
}

Expression node: exactly one of lit / ref / fn (02 §8.1).

Wire shape is the baseline schema’s oneOf of three closed single-key objects; the variants are mutually exclusive by their required keys, so serde’s untagged representation is deterministic.

Variants

Lit(LitExpr)

Literal JSON value.

Ref(RefExpr)

Reference into the closed scope grammar.

Fn(FnExpr)

Whitelisted pure-function application.

Implementations

impl Expr

pub fn lit(value: impl Into<Value>) -> Self

Builds a literal expression.

pub fn reference(path: RefPath) -> Self

Builds a reference expression.

pub fn call(f: PureFn, args: Vec<Expr>) -> Self

Builds a pure-function application. Arity/type constraints are enforced by the schema and by the compiler check phase, not here.

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Expr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Expr

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for Expr

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 Expr

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Expr

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 Expr