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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 "../utility/common.h"
54 class SelectionCollection;
55 class SelectionOptionStorage;
58 * Handles interaction of selection options with other options and user input.
60 * This class implements interaction of SelectionOption with
61 * SelectionCollection, and also implements features of SelectionOption that
62 * require actions outside options parsing.
63 * It also implements the coupling between SelectionOption and
64 * SelectionFileOption.
66 * The main features of this class are:
67 * - convertOptionValue(), which is used to convert string values into
68 * selections for options.
69 * - requestOptionDelayedParsing(), which is called by the internal
70 * implementation of selection options when an option is provided on the
71 * command line without a value. Such calls are remembered, and the value
72 * for all requested options can be later provided by calling one of
73 * parseRequestedFromStdin(), parseRequestedFromFile() or
74 * parseRequstedFromString().
76 * \see setManagerForSelectionOptions()
79 * \ingroup module_selection
81 class SelectionOptionManager
85 * Creates a manager for selection options.
87 * \throws std::bad_alloc if out of memory.
89 explicit SelectionOptionManager(SelectionCollection *selections);
90 ~SelectionOptionManager();
93 * Adds a selection option to be managed.
95 * \param storage Storage object for the option to register.
96 * \throws std::bad_alloc if out of memory.
98 * This is only for internal use by the selection module.
99 * It is not possible to obtain a SelectionOptionStorage pointer
100 * through any public or library API.
102 * Strong exception safety.
104 void registerOption(SelectionOptionStorage *storage);
106 * Converts a string value to selections for an option.
108 * \param storage Storage object to receive the selections.
109 * \param[in] value Value to convert.
110 * \param[in] bFullValue If true, the provided selections are the full
111 * value of the option, and additional checks are performed.
112 * \throws std::bad_alloc if out of memory.
113 * \throws InvalidInputError if the selection string is not valid,
114 * or uses a feature not supported by the option.
116 * This is only for internal use by the selection module.
117 * It is not possible to obtain a SelectionOptionStorage pointer
118 * through any public or library API.
120 void convertOptionValue(SelectionOptionStorage *storage,
121 const std::string &value,
124 * Adds a selection option for delayed user input.
126 * \param storage Storage object for the option to request.
127 * \throws std::bad_alloc if out of memory.
129 * This is only for internal use by the selection module.
130 * It is not possible to obtain a SelectionOptionStorage pointer
131 * through any public or library API.
133 * Strong exception safety.
135 void requestOptionDelayedParsing(SelectionOptionStorage *storage);
138 * Parses selection(s) from standard input for options not yet
141 * \param[in] bInteractive Whether the parser should behave
143 * \throws unspecified Can throw any exception thrown by
144 * SelectionCollection::parseFromStdin().
145 * \throws std::bad_alloc if out of memory.
147 * This method cooperates with SelectionOption to allow interactive
148 * input of requested selections after all options have been processed.
149 * It should be called after the Options::finish() method has been
150 * called on all options that add selections to this collection.
151 * For each required selection option that has not been given, as well
152 * as for optional selection options that have been specified without
153 * values, it will prompt the user to input the necessary selections.
155 void parseRequestedFromStdin(bool bInteractive);
157 * Parses selection(s) from a file for options not yet provided.
159 * \param[in] filename Name of the file to parse selections from.
160 * \throws unspecified Can throw any exception thrown by
161 * SelectionCollection::parseFromFile().
162 * \throws std::bad_alloc if out of memory.
163 * \throws InvalidInputError if
164 * - the number of selections in \p filename doesn't match the
166 * - any selection uses a feature that is not allowed for the
167 * corresponding option.
168 * - if there is a request for any number of selections that is
169 * not the last (in which case it is not possible to determine
170 * which selections belong to which request).
172 * This method behaves as parseRequestedFromStdin(), with two
174 * -# It reads the selections from a file instead of standard input.
175 * -# If no requests are pending, assigns values to all required
176 * options that have not yet been set.
178 * This method used to implement SelectionFileOption.
180 * \see parseRequestedFromStdin()
182 void parseRequestedFromFile(const std::string &filename);
184 * Parses selection(s) from a string for options not yet provided.
186 * \param[in] str String to parse.
187 * \throws unspecified Can throw any exception thrown by
188 * SelectionCollection::parseFromString().
189 * \throws std::bad_alloc if out of memory.
190 * \throws InvalidInputError in same conditions as
191 * parseRequestedFromFile().
193 * This method behaves as parseRequestedFromFile(), but reads the
194 * selections from a string instead of a file.
195 * This method is mainly used for testing.
197 * \see parseRequestedFromFile()
199 void parseRequestedFromString(const std::string &str);
204 PrivateImplPointer<Impl> impl_;
207 * Needed for handling delayed selection parsing requests.
209 friend class SelectionOptionStorage;
213 * Set manager for all selection options.
215 * Recursively sets the manager to \p manager for all selection options in
217 * Must be called before value assignment starts for \p options.
223 void setManagerForSelectionOptions(Options *options,
224 SelectionOptionManager *manager);