Struct Config 

pub struct Config {
    pub delimiter: u8,
    pub key_folding: bool,
    pub flatten_depth: Option<usize>,
    pub empty_array_bare: bool,
    pub escape_controls: bool,
    pub max_depth: usize,
    pub max_input_bytes: usize,
}

Encoder configuration. The spec’s only encoder options are delimiter and indentSize (§13); the rest are etoon extensions or resource guards.

Fields

delimiter: u8

Delimiter between array/tabular values. Must be ,, \t, or |.

key_folding: bool

If true, fold single-key object chains into dot-notation keys (safe mode). An etoon extension: the spec removed key folding in v4.0, so nothing re-nests the output.

flatten_depth: Option<usize>

Max fold depth (segments). None = unlimited. 0 disables folding.

empty_array_bare: bool

If true, emit empty arrays as canonical [] / key: [] instead of the legacy [0]: / key[0]: length-marker form. False emits output the spec has forbidden since v3.1.

escape_controls: bool

If true, escape control chars U+0000–U+001F (except the named \n \r \t) as \uXXXX with lowercase hex. False emits output the spec has forbidden since v3.1.

max_depth: usize

Max JSON nesting depth. Input deeper than this is rejected before parsing, so neither the sonic-rs DOM parser nor the recursive emitter can overflow the stack (both crash the host process near depth ~50k). 0 disables the check — use only when the input’s depth is already bounded by the producer (e.g. orjson output, capped by CPython’s recursion limit), since the pre-scan is then redundant.

max_input_bytes: usize

Max input size in bytes. 0 disables the check (default). A caller that encodes untrusted input can set this to bound peak memory.

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Config

impl Default for Config

fn default() -> Self

Returns the “default value” for a type.