Macro golang_type_decl::gen_json_struct

macro_rules! gen_json_struct {
    ($code:literal) => { ... };
    (
        $code:literal,
        $( $opt_k:ident = $opt_v:literal),+ $(,)?
    ) => { ... };
    (
        $code:literal;
        $( $field_type_name:literal => $field_type:ty ),* $(,)?
    ) => { ... };
    (
        $code:literal;
        $( $field_opt_name:literal => { $( $field_opt_k:literal : $field_opt_v:tt ),* $(,)? } ),* $(,)?
    ) => { ... };
    (
        $code:literal,
        $( $opt_k:ident = $opt_v:literal ),+ $(,)?;
        $( $field_type_name:literal => $field_type:ty ),* $(,)?
    ) => { ... };
    (
        $code:literal,
        $( $opt_k:ident = $opt_v:literal ),+ $(,)?;
        $( $field_opt_name:literal => { $( $field_opt_k:literal : $field_opt_v:tt ),* $(,)? } ),* $(,)?
    ) => { ... };
    (
        $code:literal;
        $( $field_type_name:literal => $field_type:ty ),* $(,)?;
        $( $field_opt_name:literal => { $( $field_opt_k:literal : $field_opt_v:tt ),* $(,)? } ),* $(,)?
    ) => { ... };
    (
        $code:literal,
        $( $opt_k:ident = $opt_v:literal ),+ $(,)?;
        $( $field_type_name:literal => $field_type:ty ),* $(,)?;
        $( $field_opt_name:literal => { $( $field_opt_k:literal : $field_opt_v:tt ),* $(,)? } ),* $(,)?
    ) => { ... };
}