Enum Val 

pub enum Val {
    Null,
    Bool(bool),
    Num(String),
    Str(String),
    Arr(Vec<Val>),
    Obj(Vec<(String, Val)>),
}

A serde-free JSON value tree, built by the server (which owns serde_json) and handed to the gemma4 tools arm. The compact gemma dialect needs argument/schema TYPE fidelity that a pre-rendered string cannot carry — a string "21" and a number 21 render differently (<|"|>21<|"|> vs 21), a bool is true/false, a null is None, and mappings/sequences recurse. Num keeps the exact numeric text (serde_json Number::to_string()) so the rendered bytes match jinja’s {{ number }} (Python str()), which this crate cannot reproduce from an f64 alone. qwen/step arms ignore this; they use ToolCall::params.

Variants

Null

Bool(bool)

Num(String)

Str(String)

Arr(Vec<Val>)

Obj(Vec<(String, Val)>)

Insertion-ordered object; the gemma dialect dictsorts keys (case-insensitive, stable) at render time, so ties keep this insertion order — matching jinja’s | dictsort.

Trait Implementations

impl Clone for Val

fn clone(&self) -> Val

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Val

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

Formats the value using the given formatter.

impl PartialEq for Val

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Val