Function serialize

std/json/src/main/serializer.rs:40–54

(value: &Handle, opts: Options)

const MAX_DEPTH: usize = 200;

pub fn serialize(value: &Handle, opts: Options) -> Result<String> {
    // `cls` short-circuits the whole walk: instantiate and delegate to its `.encode(value)`.
    if let Some(cls) = &opts.cls {
        let encoder = cls.call("__call__", &[])?;
        let result = encoder.call("encode", &[value.raw()])?;
        return match decode(result.raw())? {
            Value::Bytes(b) => String::from_utf8(b).map_err(|e| Error::Value(format!("cls.encode produced non-UTF-8: {}", e))),
            _ => Err(Error::Type("cls.encode must return str".into())),
        };
    }
    let mut out = String::new();
    let mut ctx = SerCtx { opts: &opts, depth: 0 };
    serialize_into(value, &mut out, &mut ctx, 0)?;
    Ok(out)
}

fn serialize_into(value: &Handle, out: &mut String, ctx: &mut SerCtx, depth: usize) -> Result<()> {
    let ty_handle = value.type_of()?;