Enum FieldValue 

pub enum FieldValue {
    Str(String),
    Int(i64),
    Float(f64),
    Bool(bool),
    List(Vec<Self>),
    Variant {
        arm_index: usize,
        value: Box<Self>,
    },
    Object(BTreeMap<String, Self>),
    Media(MediaValue),
    Null,
}

A typed value extracted from an LM completion or supplied as input.

Mirrors FieldType but holds actual data. Produced by adapter parsing.

Serde behavior

Uses #[serde(untagged)] — serde tries variants in declaration order during deserialization. This means JSON 42 deserializes as Int(42) (not Float), 3.14 as Float(3.14), true as Bool(true), etc. This ordering is intentional and deterministic: whole numbers become Int, decimal numbers become Float. Do not reorder variants without considering the serde impact.

The Media variant is tagged via its inner MediaValue struct (which carries an explicit kind discriminator) rather than the untagged numeric/string variants. Serde tries each untagged variant in order, and MediaValue’s struct shape is unambiguous against the scalar variants.

The Variant arm is placed before Object so its specific {arm_index, value} shape matches first. The narrow consequence: a real Object whose declared fields are exactly {arm_index: <non-negative int>, value: <any>} (and nothing else) cannot round-trip through serde-untagged — it would be parsed as Variant. No production schema uses these field names, so the ambiguity is theoretical, but consumers persisting custom shapes should avoid this exact field pair.

Variants

Str(String)

A string value.

Int(i64)

An integer value.

Float(f64)

A floating-point value.

Bool(bool)

A boolean value.

List(Vec<Self>)

A list of values.

Variant

A matched arm of a OneOf or AnyOf field. arm_index is the zero-based position of the matched arm in the owning FieldType’s arms vector; consumers can switch on it without re-running arm validation.

Fields

arm_index: usize

Zero-based index of the matched arm in the owning FieldType’s arms vector.

value: Box<Self>

The inner value produced by the matched arm’s deserializer.

Object(BTreeMap<String, Self>)

A structured object with named fields.

Media(MediaValue)

A media reference (image / document / audio / video).

Null

A null value (from a nullable field).

Trait Implementations

impl Clone for FieldValue

fn clone(&self) -> FieldValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FieldValue

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for FieldValue

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FieldValue

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 FieldValue