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37 * Declares gmx::SelectionOptionManager.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
41 * \ingroup module_selection
43 #ifndef GMX_SELECTION_SELECTIONOPTIONMANAGER_H
44 #define GMX_SELECTION_SELECTIONOPTIONMANAGER_H
48 #include "../options/options.h"
49 #include "../utility/common.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 OptionManagerInterface
86 * Creates a manager for selection options.
88 * \throws std::bad_alloc if out of memory.
90 explicit SelectionOptionManager(SelectionCollection *selections);
91 virtual ~SelectionOptionManager();
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,
122 const std::string &value,
125 * Adds a selection option for delayed user input.
127 * \param storage Storage object for the option to request.
128 * \throws std::bad_alloc if out of memory.
130 * This is only for internal use by the selection module.
131 * It is not possible to obtain a SelectionOptionStorage pointer
132 * through any public or library API.
134 * Strong exception safety.
136 void requestOptionDelayedParsing(SelectionOptionStorage *storage);
139 * Parses selection(s) from standard input for options not yet
142 * \param[in] bInteractive Whether the parser should behave
144 * \throws unspecified Can throw any exception thrown by
145 * SelectionCollection::parseFromStdin().
146 * \throws std::bad_alloc if out of memory.
148 * This method cooperates with SelectionOption to allow interactive
149 * input of requested selections after all options have been processed.
150 * It should be called after the Options::finish() method has been
151 * called on all options that add selections to this collection.
152 * For each required selection option that has not been given, as well
153 * as for optional selection options that have been specified without
154 * values, it will prompt the user to input the necessary selections.
156 void parseRequestedFromStdin(bool bInteractive);
158 * Parses selection(s) from a file for options not yet provided.
160 * \param[in] filename Name of the file to parse selections from.
161 * \throws unspecified Can throw any exception thrown by
162 * SelectionCollection::parseFromFile().
163 * \throws std::bad_alloc if out of memory.
164 * \throws InvalidInputError if
165 * - the number of selections in \p filename doesn't match the
167 * - any selection uses a feature that is not allowed for the
168 * corresponding option.
169 * - if there is a request for any number of selections that is
170 * not the last (in which case it is not possible to determine
171 * which selections belong to which request).
173 * This method behaves as parseRequestedFromStdin(), with two
175 * -# It reads the selections from a file instead of standard input.
176 * -# If no requests are pending, assigns values to all required
177 * options that have not yet been set.
179 * This method used to implement SelectionFileOption.
181 * \see parseRequestedFromStdin()
183 void parseRequestedFromFile(const std::string &filename);
185 * Parses selection(s) from a string for options not yet provided.
187 * \param[in] str String to parse.
188 * \throws unspecified Can throw any exception thrown by
189 * SelectionCollection::parseFromString().
190 * \throws std::bad_alloc if out of memory.
191 * \throws InvalidInputError in same conditions as
192 * parseRequestedFromFile().
194 * This method behaves as parseRequestedFromFile(), but reads the
195 * selections from a string instead of a file.
196 * This method is mainly used for testing.
198 * \see parseRequestedFromFile()
200 void parseRequestedFromString(const std::string &str);
205 PrivateImplPointer<Impl> impl_;
208 * Needed for handling delayed selection parsing requests.
210 friend class SelectionOptionStorage;