| /* Copyright 2018 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include <vector> |
| |
| #include <base/values.h> |
| |
| #include "runtime_probe/probe_function.h" |
| |
| namespace runtime_probe { |
| |
| typedef typename ProbeFunction::DataType DataType; |
| |
| std::unique_ptr<ProbeFunction> ProbeFunction::FromDictionaryValue( |
| const base::DictionaryValue& dict_value) { |
| if (dict_value.size() == 0) { |
| LOG(ERROR) << "No function name in ProbeFunction dict"; |
| return nullptr; |
| } |
| |
| if (dict_value.size() > 1) { |
| LOG(ERROR) << "More than 1 function names specified in a " |
| << "ProbeFunction dictionary: " << dict_value; |
| return nullptr; |
| } |
| |
| auto it = base::DictionaryValue::Iterator{dict_value}; |
| |
| /* function_name is the only key exists in the dictionary */ |
| const auto& function_name = it.key(); |
| const auto& kwargs = it.value(); |
| |
| if (REGISTERED_FUNCTIONS.find(function_name) == REGISTERED_FUNCTIONS.end()) { |
| // TODO(stimim): Should report an error. |
| LOG(ERROR) << "function `" << function_name << "` not found"; |
| return nullptr; |
| } |
| |
| if (!kwargs.is_dict()) { |
| // TODO(stimim): implement syntax sugar. |
| LOG(ERROR) << "function argument must be an dictionary"; |
| return nullptr; |
| } |
| |
| const base::DictionaryValue* dict_args; |
| kwargs.GetAsDictionary(&dict_args); |
| return REGISTERED_FUNCTIONS[function_name](*dict_args); |
| } |
| } // namespace runtime_probe |