Test implicit construction from success value

need unsafe init constructor or default constructor for json serialization

! * \brief Register a symbol into the from the surrounding env. * \param name The name of the symbol. * \param symbol The symbol to register. * \r

! * \brief Get the data pointer of a ErrorInfo from an Error object. * \param obj The object handle. * \return The cell pointer. */

--------------------------------------------------------------------------------------------- The following section contains predefined setters for co

! \brief RAII guard constructor to create a TVMFFIPyCallContext */

! * \brief Set a field of a FFI object * \param field_setter The field setter (function pointer or FunctionObj handle) * \param field_flags The fie

! \brief Constructor to initialize the call stack */

! * \brief C-callable Python callback entry point (TVMFFISafeCallType shape). * * Forwards to TVMFFIPyCallManager::ThreadLocal()->PyCallback. Desig

common callback arg setters that can be quikcly implemented in C++ and used by cython factory note that PyErr is propagated back so we just need to re

! * \brief Call a constructor function with a variable number of arguments * * This function is similar to TVMFFIPyFuncCall, but it will not set th

! * \brief Create an FFI function handle from a Python callable + optional DLPack exchange API. * * Allocates a TVMFFIPyCallbackClosure on the heap

! * \brief Call a function with a variable number of arguments * \param func_handle The handle of the function to call * \param py_arg_tuple The ar

! * \brief Get the size of the arg dispatch map * \return The size of the arg dispatch map */

! * \brief Create a TVMFFIPyMLIRPackedSafeCall handle * \param mlir_packed_safe_call The MLIR packed safe call function * \param keep_alive_object

! * \brief Delete the TVMFFIPyMLIRPackedSafeCall object * \param self The TVMFFIPyMLIRPackedSafeCall object */

! * \brief Call the MLIR packed safe call function * \param self The TVMFFIPyMLIRPackedSafeCall object * \param args The arguments * \param num_ar

! * \brief Push Extra temporary Python object to the call context that may go beyond one temp per * argument budget, mainly used by value pro

! * \brief Push a temporary FFI object to the call context that will be recycled after the call * \param ctx The call context * \param arg The FFI

! * \brief Push a temporary Python object to the call context that will be recycled after the call * \param ctx The call context * \param arg The P

! * \brief Convert a Python object to a FFI Any * \param py_arg The python argument to be set * \param out The output argument * \param c_api_ret_

! * \brief Set an python argument to a FFI Any using the generic dispatcher in call manager * \param ctx The call context * \param py_arg_tvm_ffi_v

! * \brief Get the data pointer of a shape array from a shape object. * \param obj The object handle. * \return The cell pointer. */

string APIs, we blend into object.cc to keep things simple