Class Trace

crates/c-api/include/wasmtime/trap.hh:66–95

* \brief An owned vector of `FrameRef` instances representing the WebAssembly * call-stack on a trap. * * This can be used to iterate over the frames of a trap and determine what was * running when a trap happened. */

 * running when a trap happened.
 */
class Trace {
  friend class Trap;
  friend class Error;

  wasm_frame_vec_t vec;

  Trace(wasm_frame_vec_t vec) : vec(vec) {}

public:
  ~Trace() { wasm_frame_vec_delete(&vec); }

  Trace(const Trace &other) = delete;
  Trace(Trace &&other) = delete;
  Trace &operator=(const Trace &other) = delete;
  Trace &operator=(Trace &&other) = delete;

  /// Iterator used to iterate over this trace.
  typedef const FrameRef *iterator;

  /// Returns the start of iteration
  iterator begin() const {
    return reinterpret_cast<FrameRef *>(&vec.data[0]); // NOLINT
  }
  /// Returns the end of iteration
  iterator end() const {
    return reinterpret_cast<FrameRef *>(&vec.data[vec.size]); // NOLINT
  }
  /// Returns the size of this trace, or how many frames it contains.
  size_t size() const { return vec.size; }
};

inline Trace Error::trace() const {
  wasm_frame_vec_t frames;