PjHandle

class PjHandle

RAII handle for a rizin PJ (JSON builder).

Owns a pj_new() alloc, the destructor calls pj_free() on early return paths before the PJ is drained. drain() releases ownership (pj_drain frees the PJ and returns its buffer), so the destructor is a no-op after drain.

move used, as copying would alias the PJ and do double free.

{
    PjHandle pj;
    if (!pj) {
        return;
    }
    pj_o(pj.get());
    pj_ks(pj.get(), "name", "value");
    pj_end(pj.get());
    char *json = pj.drain();
    // caller frees json
}

Public Functions

PjHandle()

~PjHandle()

PjHandle(const PjHandle&) = delete

PjHandle &operator=(const PjHandle&) = delete

PjHandle(PjHandle &&other) noexcept

PjHandle &operator=(PjHandle &&other) noexcept

inline explicit operator bool() const

inline PJ *get() const

char *drain()

Drain the PJ into its JSON buffer.

Returns:

buffer of the drained PJ, or nullptr if already drained. The caller takes ownership and must free() the returned buffer.