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38 * Declares gmx::SelectionOptionManager.
40 * \author Teemu Murtola <teemu.murtola@gmail.com>
42 * \ingroup module_selection
44 #ifndef GMX_SELECTION_SELECTIONOPTIONMANAGER_H
45 #define GMX_SELECTION_SELECTIONOPTIONMANAGER_H
49 #include "gromacs/options/options.h"
50 #include "gromacs/utility/classhelpers.h"
55 class SelectionCollection;
56 class SelectionOptionStorage;
59 * Handles interaction of selection options with other options and user input.
61 * This class implements interaction of SelectionOption with
62 * SelectionCollection, and also implements features of SelectionOption that
63 * require actions outside options parsing.
64 * It also implements the coupling between SelectionOption and
65 * SelectionFileOption.
66 * It needs to be added using Options::addManager() before SelectionOption or
67 * SelectionFileOption options can be added to an Options collection.
69 * The main features of this class are:
70 * - convertOptionValue(), which is used to convert string values into
71 * selections for options.
72 * - requestOptionDelayedParsing(), which is called by the internal
73 * implementation of selection options when an option is provided on the
74 * command line without a value. Such calls are remembered, and the value
75 * for all requested options can be later provided by calling one of
76 * parseRequestedFromStdin(), parseRequestedFromFile() or
77 * parseRequstedFromString().
80 * \ingroup module_selection
82 class SelectionOptionManager : public IOptionManager
86 * Creates a manager for selection options.
88 * \throws std::bad_alloc if out of memory.
90 explicit SelectionOptionManager(SelectionCollection* selections);
91 ~SelectionOptionManager() override;
94 * Adds a selection option to be managed.
96 * \param storage Storage object for the option to register.
97 * \throws std::bad_alloc if out of memory.
99 * This is only for internal use by the selection module.
100 * It is not possible to obtain a SelectionOptionStorage pointer
101 * through any public or library API.
103 * Strong exception safety.
105 void registerOption(SelectionOptionStorage* storage);
107 * Converts a string value to selections for an option.
109 * \param storage Storage object to receive the selections.
110 * \param[in] value Value to convert.
111 * \param[in] bFullValue If true, the provided selections are the full
112 * value of the option, and additional checks are performed.
113 * \throws std::bad_alloc if out of memory.
114 * \throws InvalidInputError if the selection string is not valid,
115 * or uses a feature not supported by the option.
117 * This is only for internal use by the selection module.
118 * It is not possible to obtain a SelectionOptionStorage pointer
119 * through any public or library API.
121 void convertOptionValue(SelectionOptionStorage* storage, const std::string& value, bool bFullValue);
123 * Adds a selection option for delayed user input.
125 * \param storage Storage object for the option to request.
126 * \throws std::bad_alloc if out of memory.
128 * This is only for internal use by the selection module.
129 * It is not possible to obtain a SelectionOptionStorage pointer
130 * through any public or library API.
132 * Strong exception safety.
134 void requestOptionDelayedParsing(SelectionOptionStorage* storage);
137 * Returns whether there are requested selections that need input from
138 * parseRequestedFrom*().
140 bool hasRequestedSelections() const;
143 * Initializes options for setting global selection properties.
145 * \param[in,out] options Options object to initialize.
146 * \throws std::bad_alloc if out of memory.
148 * \see SelectionCollection::initOptions()
150 void initOptions(IOptionsContainer* options);
153 * Parses selection(s) from standard input for options not yet
156 * \param[in] bInteractive Whether the parser should behave
158 * \throws unspecified Can throw any exception thrown by
159 * SelectionCollection::parseFromStdin().
160 * \throws std::bad_alloc if out of memory.
162 * This method cooperates with SelectionOption to allow interactive
163 * input of requested selections after all options have been processed.
164 * It should be called after the Options::finish() method has been
165 * called on all options that add selections to this collection.
166 * For each required selection option that has not been given, as well
167 * as for optional selection options that have been specified without
168 * values, it will prompt the user to input the necessary selections.
170 void parseRequestedFromStdin(bool bInteractive);
172 * Parses selection(s) from a file for options not yet provided.
174 * \param[in] filename Name of the file to parse selections from.
175 * \throws unspecified Can throw any exception thrown by
176 * SelectionCollection::parseFromFile().
177 * \throws std::bad_alloc if out of memory.
178 * \throws InvalidInputError if
179 * - the number of selections in \p filename doesn't match the
181 * - any selection uses a feature that is not allowed for the
182 * corresponding option.
183 * - if there is a request for any number of selections that is
184 * not the last (in which case it is not possible to determine
185 * which selections belong to which request).
187 * This method behaves as parseRequestedFromStdin(), with two
189 * -# It reads the selections from a file instead of standard input.
190 * -# If no requests are pending, assigns values to all required
191 * options that have not yet been set.
193 * This method used to implement SelectionFileOption.
195 * \see parseRequestedFromStdin()
197 void parseRequestedFromFile(const std::string& filename);
199 * Parses selection(s) from a string for options not yet provided.
201 * \param[in] str String to parse.
202 * \throws unspecified Can throw any exception thrown by
203 * SelectionCollection::parseFromString().
204 * \throws std::bad_alloc if out of memory.
205 * \throws InvalidInputError in same conditions as
206 * parseRequestedFromFile().
208 * This method behaves as parseRequestedFromFile(), but reads the
209 * selections from a string instead of a file.
210 * This method is mainly used for testing.
212 * \see parseRequestedFromFile()
214 void parseRequestedFromString(const std::string& str);
219 PrivateImplPointer<Impl> impl_;
222 * Needed for handling delayed selection parsing requests.
224 friend class SelectionOptionStorage;