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137 lines
3.8 KiB
137 lines
3.8 KiB
/*
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* Copyright (c) 2017-2018 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef ARM_COMPUTE_UTILS_ENUMOPTION
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#define ARM_COMPUTE_UTILS_ENUMOPTION
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#include "SimpleOption.h"
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#include <set>
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#include <sstream>
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#include <stdexcept>
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#include <string>
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namespace arm_compute
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{
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namespace utils
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{
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/** Implementation of a simple option that accepts a value from a fixed set. */
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template <typename T>
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class EnumOption : public SimpleOption<T>
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{
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public:
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/** Construct option with allowed values.
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*
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* @param[in] name Name of the option.
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* @param[in] allowed_values Set of allowed values for the option.
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*/
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EnumOption(std::string name, std::set<T> allowed_values);
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/** Construct option with allowed values, a fixed number of accepted values and default values for the option.
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*
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* @param[in] name Name of the option.
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* @param[in] allowed_values Set of allowed values for the option.
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* @param[in] default_value Default value.
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*/
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EnumOption(std::string name, std::set<T> allowed_values, T default_value);
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bool parse(std::string value) override;
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std::string help() const override;
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/** Get the selected value.
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*
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* @return get the selected enum value.
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*/
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const T &value() const;
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private:
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std::set<T> _allowed_values{};
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};
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template <typename T>
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inline EnumOption<T>::EnumOption(std::string name, std::set<T> allowed_values)
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: SimpleOption<T>{ std::move(name) }, _allowed_values{ std::move(allowed_values) }
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{
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}
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template <typename T>
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inline EnumOption<T>::EnumOption(std::string name, std::set<T> allowed_values, T default_value)
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: SimpleOption<T>{ std::move(name), std::move(default_value) }, _allowed_values{ std::move(allowed_values) }
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{
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}
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template <typename T>
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bool EnumOption<T>::parse(std::string value)
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{
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try
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{
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std::stringstream stream{ value };
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T typed_value{};
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stream >> typed_value;
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if(!stream.fail())
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{
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if(_allowed_values.count(typed_value) == 0)
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{
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return false;
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}
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this->_value = std::move(typed_value);
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this->_is_set = true;
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return true;
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}
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return false;
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}
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catch(const std::invalid_argument &)
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{
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return false;
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}
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}
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template <typename T>
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std::string EnumOption<T>::help() const
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{
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std::stringstream msg;
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msg << "--" + this->name() + "={";
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for(const auto &value : _allowed_values)
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{
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msg << value << ",";
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}
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msg << "} - " << this->_help;
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return msg.str();
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}
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template <typename T>
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inline const T &EnumOption<T>::value() const
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{
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return this->_value;
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}
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} // namespace utils
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} // namespace arm_compute
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#endif /* ARM_COMPUTE_UTILS_ENUMOPTION */
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