def dispatch_callback(dataptr, h_args):
id = rffi.cast(lltype.Signed, dataptr)
callback = global_callback_map.get(id)
if callback is None:
raise RuntimeError("invalid callback id; was it garbage-collected?")
space = callback.space
# Unpack h_args as an extension of the default args from the callback.
# If the callback wants the value of 'this', pass it as first argument.
args_w, kw_w = callback.__args__.unpack()
if kw_w:
raise RuntimeError("callback function kw args not implemented yet")
h_args_len = support.emjs_length(h_args)
all_args_len = len(args_w) + h_args_len
if callback.wants_this:
all_args_len += 1
all_args_w = [None] * all_args_len
i = 0
if callback.wants_this:
h_this = support.emjs_prop_get_str(h_args, "this")
w_this = _wrap_handle(space, h_this)
all_args_w[0] = w_this
i += 1
for w_arg in args_w:
all_args_w[i] = w_arg
i += 1
for j in xrange(h_args_len):
w_arg = _wrap_handle(space, support.emjs_prop_get_int(h_args, j))
all_args_w[i] = w_arg
i += 1
# Do the call, propagating return value or error as appropriate.
try:
w_res = space.call(callback.w_callback, space.newtuple(all_args_w))
except OperationError, pyerr:
# XXX TODO: tunnel the exception through JS and back to Python?
# XXX TODO: allow the callback to raise js.Error and reflect it
# properly through to the javascript side.
# w_jserror = getstate(space).w_jserror
# if isinstance(pyerr, w_jserror):
# with _unwrap_handle(pyerror.args[0]) as h_err:
# support.emjs_set_error(h_err)
# else:
# h_msg = make_error_string()
# h_data = make_error_pickle()
# h_err = new(h_pyerror, [h_msg, h_data])
# support.emjs_set_error(h_err)
# support.emjs_free(h_err)
errmsg = pyerr.errorstr(space)
h_errmsg = support.emjs_make_strn(errmsg, len(errmsg))
support.emjs_set_error(h_errmsg)
support.emjs_free(h_errmsg)
return support.EMJS_ERROR
def dispatch_callback(dataptr, h_args):
id = rffi.cast(lltype.Signed, dataptr)
callback = global_callback_map.get(id)
if callback is None:
raise RuntimeError("invalid callback id; was it garbage-collected?")
space = callback.space
# Unpack h_args as an extension of the default args from the callback.
# If the callback wants the value of 'this', pass it as first argument.
args_w, kw_w = callback.__args__.unpack()
if kw_w:
raise RuntimeError("callback function kw args not implemented yet")
h_args_len = support.emjs_length(h_args)
all_args_len = len(args_w) + h_args_len
if callback.wants_this:
all_args_len += 1
all_args_w = [None] * all_args_len
i = 0
if callback.wants_this:
h_this = support.emjs_prop_get_str(h_args, "this")
w_this = _wrap_handle(space, h_this)
all_args_w[0] = w_this
i += 1
for w_arg in args_w:
all_args_w[i] = w_arg
i += 1
for j in xrange(h_args_len):
w_arg = _wrap_handle(space, support.emjs_prop_get_int(h_args, j))
all_args_w[i] = w_arg
i += 1
# Do the call, propagating return value or error as appropriate.
try:
w_res = space.call(callback.w_callback, space.newtuple(all_args_w))
except OperationError, pyerr:
# XXX TODO: tunnel the exception through JS and back to Python?
# XXX TODO: allow the callback to raise js.Error and reflect it
# properly through to the javascript side.
# w_jserror = getstate(space).w_jserror
# if isinstance(pyerr, w_jserror):
# with _unwrap_handle(pyerror.args[0]) as h_err:
# support.emjs_set_error(h_err)
# else:
# h_msg = make_error_string()
# h_data = make_error_pickle()
# h_err = new(h_pyerror, [h_msg, h_data])
# support.emjs_set_error(h_err)
# support.emjs_free(h_err)
errmsg = pyerr.errorstr(space)
h_errmsg = support.emjs_make_strn(errmsg, len(errmsg))
support.emjs_set_error(h_errmsg)
support.emjs_free(h_errmsg)
return support.EMJS_ERROR
def __del__(self):
if we_are_translated() or support and support.emjs_free:
support.emjs_free(self.handle)
def __del__(self):
if we_are_translated() or support and support.emjs_free:
support.emjs_free(self.handle)