Struct RustBindingConfig 

pub struct RustBindingConfig<'a> {

    pub struct_attrs: &'a [&'a str],
    pub field_attrs: &'a [&'a str],
    pub struct_derives: &'a [&'a str],
    pub method_block_attr: Option<&'a str>,
    pub constructor_attr: &'a str,
    pub static_attr: Option<&'a str>,
    pub function_attr: &'a str,
    pub enum_attrs: &'a [&'a str],
    pub enum_derives: &'a [&'a str],
    pub needs_signature: bool,
    pub signature_prefix: &'a str,
    pub signature_suffix: &'a str,
    pub core_import: &'a str,
    pub async_pattern: AsyncPattern,
    pub has_serde: bool,
    pub type_name_prefix: &'a str,
    pub option_duration_on_defaults: bool,
}

Configuration for Rust binding code generation.

Fields

struct_attrs: &'a [&'a str]

Attrs applied to generated structs, e.g. ["pyclass(frozen)"].

field_attrs: &'a [&'a str]

Attrs applied to each field, e.g. ["pyo3(get)"].

struct_derives: &'a [&'a str]

Derives applied to generated structs, e.g. ["Clone"].

method_block_attr: Option<&'a str>

Attr wrapping the impl block, e.g. Some("pymethods").

constructor_attr: &'a str

Attr placed on the constructor, e.g. "#[new]".

static_attr: Option<&'a str>

Attr placed on static methods, e.g. Some("staticmethod").

function_attr: &'a str

Attr placed on free functions, e.g. "#[pyfunction]".

enum_attrs: &'a [&'a str]

Attrs applied to generated enums, e.g. ["pyclass(eq, eq_int)"].

enum_derives: &'a [&'a str]

Derives applied to generated enums, e.g. ["Clone", "PartialEq"].

needs_signature: bool

Whether the backend requires #[pyo3(signature = (...))]-style annotations.

signature_prefix: &'a str

Prefix for the signature annotation, e.g. "#[pyo3(signature = (".

signature_suffix: &'a str

Suffix for the signature annotation, e.g. "))]".

core_import: &'a str

Core crate import path, e.g. "liter_llm". Used to generate calls into core.

async_pattern: AsyncPattern

Async pattern supported by this backend.

has_serde: bool

Whether serde/serde_json are available in the output crate’s dependencies. When true, the generator can use serde-based param conversion and add serde::Serialize derives. When false, non-convertible Named params fall back to gen_unimplemented_body.

type_name_prefix: &'a str

Prefix for binding type names (e.g. “Js” for NAPI/WASM, “” for PyO3/PHP). Used in impl block targets: impl {prefix}{TypeName}.

option_duration_on_defaults: bool

When true, non-optional Duration fields on has_default types are emitted as Option<u64> in the binding struct so that unset fields fall back to the core type’s Default implementation rather than Duration::ZERO. Used by PyO3 to prevent validation failures when request_timeout is unset.