| /* |
| * Copyright (c) 2017-2018 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #ifndef ARM_COMPUTE_UTILS_SIMPLEOPTION |
| #define ARM_COMPUTE_UTILS_SIMPLEOPTION |
| |
| #include "Option.h" |
| |
| #include <sstream> |
| #include <stdexcept> |
| #include <string> |
| |
| namespace arm_compute |
| { |
| namespace utils |
| { |
| /** Implementation of an option that accepts a single value. */ |
| template <typename T> |
| class SimpleOption : public Option |
| { |
| public: |
| using Option::Option; |
| |
| /** Construct the option with the given default value. |
| * |
| * @param[in] name Name of the option. |
| * @param[in] default_value Default value. |
| */ |
| SimpleOption(std::string name, T default_value); |
| |
| /** Parses the given string. |
| * |
| * @param[in] value String representation as passed on the command line. |
| * |
| * @return True if the value could be parsed by the specific subclass. |
| */ |
| bool parse(std::string value) override; |
| |
| /** Help message for the option. |
| * |
| * @return String representing the help message for the specific subclass. |
| */ |
| std::string help() const override; |
| |
| /** Get the option value. |
| * |
| * @return the option value. |
| */ |
| const T &value() const; |
| |
| protected: |
| T _value{}; |
| }; |
| |
| template <typename T> |
| inline SimpleOption<T>::SimpleOption(std::string name, T default_value) |
| : Option{ std::move(name), false, true }, _value{ std::move(default_value) } |
| { |
| } |
| |
| template <typename T> |
| bool SimpleOption<T>::parse(std::string value) |
| { |
| try |
| { |
| std::stringstream stream{ std::move(value) }; |
| stream >> _value; |
| _is_set = !stream.fail(); |
| return _is_set; |
| } |
| catch(const std::invalid_argument &) |
| { |
| return false; |
| } |
| } |
| |
| template <> |
| inline bool SimpleOption<std::string>::parse(std::string value) |
| { |
| _value = std::move(value); |
| _is_set = true; |
| return true; |
| } |
| |
| template <typename T> |
| inline std::string SimpleOption<T>::help() const |
| { |
| return "--" + name() + "=VALUE - " + _help; |
| } |
| |
| template <typename T> |
| inline const T &SimpleOption<T>::value() const |
| { |
| return _value; |
| } |
| } // namespace utils |
| } // namespace arm_compute |
| #endif /* ARM_COMPUTE_UTILS_SIMPLEOPTION */ |