def _fall_back_unconverted(f, args, kwargs, options, exc): """Falls back to calling the function unconverted, in case of error.""" # TODO(mdan): Consider adding an internal metric. warning_template = ( 'AutoGraph could not transform %s and will run it as-is.\n' '%s' 'Cause: %s\n' 'To silence this warning, decorate the function with' ' @tf.autograph.experimental.do_not_convert') if isinstance(exc, errors.UnsupportedLanguageElementError): if not conversion.is_in_allowlist_cache(f, options): logging.warn(warning_template, f, '', exc) else: file_bug_message = ( 'Please report this to the TensorFlow team. When filing the bug, set' ' the verbosity to 10 (on Linux, `export AUTOGRAPH_VERBOSITY=10`) and' ' attach the full output.\n') logging.warn(warning_template, f, file_bug_message, exc) return _call_unconverted(f, args, kwargs, options)
def converted_call(f, args, kwargs, caller_fn_scope=None, options=None): """Converts a function call inline. For internal use only. Note: The argument list is optimized for readability of generated code, which may look like this: ag__.converted_call(f, (arg1, arg2), None, fscope) ag__.converted_call(f, (), dict(arg1=val1, **kwargs), fscope) ag__.converted_call(f, (arg1, arg2) + varargs, dict(**kwargs), lscope) Args: f: The function to convert. args: Tuple, the original positional arguments of f kwargs: Optional[Dict], the original keyword arguments of f caller_fn_scope: Optional[function_wrappers.FunctionScope], the function scope of the converted function in which this call was originally made. options: Optional[converter.ConversionOptions], conversion options. If not specified, the value of caller_fn_scope.callopts is used. Either options or caller_fn_scope must be present. Returns: Any, the result of executing a possibly-converted `f` with the given arguments. """ logging.log(1, 'Converted call: %s\n args: %s\n kwargs: %s\n', f, args, kwargs) if options is None: if caller_fn_scope is None: raise ValueError( 'either caller_fn_scope or options must have a value') options = caller_fn_scope.callopts if conversion.is_in_allowlist_cache(f, options): logging.log(2, 'Allowlisted %s: from cache', f) return _call_unconverted(f, args, kwargs, options, False) if ag_ctx.control_status_ctx().status == ag_ctx.Status.DISABLED: logging.log(2, 'Allowlisted: %s: AutoGraph is disabled in context', f) return _call_unconverted(f, args, kwargs, options, False) if is_autograph_artifact(f): logging.log(2, 'Permanently allowed: %s: AutoGraph artifact', f) return _call_unconverted(f, args, kwargs, options) # If this is a partial, unwrap it and redo all the checks. if isinstance(f, functools.partial): new_kwargs = {} if f.keywords is not None: # Use copy to avoid mutating the underlying keywords. new_kwargs = f.keywords.copy() if kwargs is not None: new_kwargs.update(kwargs) new_args = f.args + args logging.log(3, 'Forwarding call of partial %s with\n%s\n%s\n', f, new_args, new_kwargs) return converted_call(f.func, new_args, new_kwargs, caller_fn_scope=caller_fn_scope, options=options) if inspect_utils.isbuiltin(f): if f is eval: return py_builtins.eval_in_original_context( f, args, caller_fn_scope) if f is super: return py_builtins.super_in_original_context( f, args, caller_fn_scope) if f is globals: return py_builtins.globals_in_original_context(caller_fn_scope) if f is locals: return py_builtins.locals_in_original_context(caller_fn_scope) if kwargs: return py_builtins.overload_of(f)(*args, **kwargs) else: return py_builtins.overload_of(f)(*args) if conversion.is_unsupported(f): return _call_unconverted(f, args, kwargs, options) if not options.user_requested and conversion.is_allowlisted(f): return _call_unconverted(f, args, kwargs, options) # internal_convert_user_code is for example turned off when issuing a dynamic # call conversion from generated code while in nonrecursive mode. In that # case we evidently don't want to recurse, but we still have to convert # things like builtins. if not options.internal_convert_user_code: return _call_unconverted(f, args, kwargs, options) try: if inspect.ismethod(f) or inspect.isfunction(f): target_entity = f effective_args = args f_self = getattr(f, '__self__', None) if f_self is not None: if isinstance(f_self, function.TfMethodTarget): f_self = f_self.target effective_args = (f_self, ) + effective_args elif hasattr(f, '__class__') and hasattr(f.__class__, '__call__'): # Callable objects. Dunder methods have special lookup rules, see: # https://docs.python.org/3/reference/datamodel.html#specialnames # TODO(mdan): Recurse into converted_call to simplify other verifications. # This should be handled in the same way as partials. target_entity = f.__class__.__call__ effective_args = (f, ) + args else: target_entity = f raise NotImplementedError('unknown callable type "%s"' % type(f)) except Exception as e: # pylint:disable=broad-except logging.log(1, 'Error transforming entity %s', target_entity, exc_info=True) if is_autograph_strict_conversion_mode(): raise return _fall_back_unconverted(f, args, kwargs, options, e) if not hasattr(target_entity, '__code__'): logging.log(2, 'Permanently allowed: %s: native binding', target_entity) return _call_unconverted(f, args, kwargs, options) elif (hasattr(target_entity.__code__, 'co_filename') and target_entity.__code__.co_filename == '<string>'): # TODO(mdan): __globals__['txt'] might work in Py3. logging.log(2, 'Permanently allowed: %s: dynamic code (exec?)', target_entity) return _call_unconverted(f, args, kwargs, options) try: program_ctx = converter.ProgramContext(options=options) converted_f = _convert_actual(target_entity, program_ctx) if logging.has_verbosity(2): _log_callargs(converted_f, effective_args, kwargs) except Exception as e: # pylint:disable=broad-except logging.log(1, 'Error transforming entity %s', target_entity, exc_info=True) if is_autograph_strict_conversion_mode(): raise return _fall_back_unconverted(f, args, kwargs, options, e) with StackTraceMapper(converted_f), tf_stack.CurrentModuleFilter(): try: if kwargs is not None: result = converted_f(*effective_args, **kwargs) else: result = converted_f(*effective_args) except Exception as e: _attach_error_metadata(e, converted_f) raise return result