src/gromacs/options/options-impl.h

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  35 /*! \internal \file
  36  * \brief
  37  * Declares private implementation class for gmx::Options.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \ingroup module_options
  41  */
  42 #ifndef GMX_OPTIONS_OPTIONS_IMPL_H
  43 #define GMX_OPTIONS_OPTIONS_IMPL_H
  44
  45 #include <list>
  46 #include <map>
  47 #include <memory>
  48 #include <string>
  49 #include <vector>
  50
  51 #include "gromacs/options/abstractoption.h"
  52 #include "gromacs/options/abstractoptionstorage.h"
  53 #include "gromacs/options/ioptionscontainer.h"
  54 #include "gromacs/options/ioptionscontainerwithsections.h"
  55 #include "gromacs/options/isectionstorage.h"
  56 #include "gromacs/options/optionmanagercontainer.h"
  57 #include "gromacs/options/options.h"
  58 #include "gromacs/options/optionsection.h"
  59
  60 namespace gmx
  61 {
  62
  63 namespace internal
  64 {
  65
  66 /*! \internal
  67  * \brief
  68  * Internal implementation class for storing an option section.
  69  *
  70  * All options are stored within a section: the top-level contents of an
  71  * Options object are handled within an unnamed, "root" section.
  72  * This class handles the common functionality for all sections, related to
  73  * storing the options and subsections.  Functionality specific to a section
  74  * type is provided by IOptionSectionStorage.
  75  *
  76  * \ingroup module_options
  77  */
  78 class OptionSectionImpl : public IOptionsContainerWithSections
  79 {
  80     public:
  81         /*! \internal \brief
  82          * Describes a group of options (see Options::addGroup()).
  83          *
  84          * \ingroup module_options
  85          */
  86         class Group : public IOptionsContainer
  87         {
  88             public:
  89                 //! Convenience typedef for list of options.
  90                 typedef std::vector<AbstractOptionStorage *> OptionList;
  91                 //! Convenience typedef for list of subgroups.
  92                 typedef std::list<Group> SubgroupList;
  93
  94                 //! Creates a group within the given Options.
  95                 explicit Group(OptionSectionImpl *parent) : parent_(parent) {}
  96
  97                 // From IOptionsContainer
  98                 virtual IOptionsContainer &addGroup();
  99                 virtual OptionInfo *addOptionImpl(const AbstractOption &settings);
 100
 101                 //! Containing options object.
 102                 OptionSectionImpl  *parent_;
 103                 /*! \brief
 104                  * List of options, in insertion order.
 105                  *
 106                  * Pointers in this container point to the objects managed by
 107                  * Impl::optionsMap_.
 108                  */
 109                 OptionList          options_;
 110                 //! List of groups, in insertion order.
 111                 SubgroupList        subgroups_;
 112         };
 113
 114         //! Smart pointer for managing an AbstractOptionStorage object.
 115         typedef std::unique_ptr<AbstractOptionStorage>
 116             AbstractOptionStoragePointer;
 117         //! Convenience typedef for a map that contains all the options.
 118         typedef std::map<std::string, AbstractOptionStoragePointer> OptionMap;
 119         //! Smart pointer for managing subsections.
 120         typedef std::unique_ptr<OptionSectionImpl> SectionPointer;
 121         //! Convenience typedef for a container for subsections.
 122         typedef std::vector<SectionPointer> SectionList;
 123
 124         //! Creates storage for a new section.
 125         OptionSectionImpl(const OptionManagerContainer          &managers,
 126                           std::unique_ptr<IOptionSectionStorage> storage,
 127                           const char                            *name)
 128             : managers_(managers), storage_(std::move(storage)), info_(this),
 129               name_(name), rootGroup_(this), storageInitialized_(false)
 130         {
 131         }
 132
 133         // From IOptionsContainerWithSections
 134         virtual OptionSectionImpl *addSectionImpl(const AbstractOptionSection &section);
 135
 136         // From IOptionsContainer
 137         virtual IOptionsContainer &addGroup();
 138         virtual OptionInfo *addOptionImpl(const AbstractOption &settings);
 139
 140         //! Returns section info object for this section.
 141         OptionSectionInfo       &info() { return info_; }
 142         //! Returns section info object for this section.
 143         const OptionSectionInfo &info() const { return info_; }
 144
 145         /*! \brief
 146          * Finds a subsection by name.
 147          *
 148          * \param[in] name  Name to search for.
 149          * \returns Pointer to the found subsection, or NULL if not found.
 150          *
 151          * Does not throw.
 152          */
 153         OptionSectionImpl *findSection(const char *name) const;
 154         /*! \brief
 155          * Finds an option by name.
 156          *
 157          * \param[in] name  Name to search for.
 158          * \returns Pointer to the found option, or NULL if not found.
 159          *
 160          * Does not throw.
 161          */
 162         AbstractOptionStorage *findOption(const char *name) const;
 163
 164         /*! \brief
 165          * Called when entering the section.
 166          *
 167          * Calls AbstractOptionStorage::startSource() for all options.
 168          */
 169         void start();
 170         /*! \brief
 171          * Calls AbstractOptionStorage::finish() for all options.
 172          */
 173         void finish();
 174
 175         //! Reference to the option managers in the parent Options object.
 176         const OptionManagerContainer           &managers_;
 177         //! Type-specific storage object for this section.
 178         std::unique_ptr<IOptionSectionStorage>  storage_;
 179         //! Info object for this section.
 180         OptionSectionInfo                       info_;
 181         //! Name of this section (empty and unused for the root section).
 182         std::string                             name_;
 183         /*! \brief
 184          * Group that contains all options (and subgroups).
 185          *
 186          * This is used to store the insertion order of options.
 187          */
 188         Group                          rootGroup_;
 189         //! Map from option names to options; owns the option storage objects.
 190         OptionMap                      optionMap_;
 191         //! List of subsections, in insertion order.
 192         SectionList                    subsections_;
 193         //! Whether initStorage() has been called for `storage_`.
 194         bool                           storageInitialized_;
 195
 196         GMX_DISALLOW_COPY_AND_ASSIGN(OptionSectionImpl);
 197 };
 198
 199 /*! \internal
 200  * \brief
 201  * Private implementation class for Options.
 202  *
 203  * Note that in addition to Options, the OptionsAssigner class also directly
 204  * accesses this class.
 205  *
 206  * \ingroup module_options
 207  */
 208 class OptionsImpl
 209 {
 210     public:
 211         OptionsImpl();
 212
 213         //! Option managers set for this collection.
 214         OptionManagerContainer  managers_;
 215         //! Root section for this collection.
 216         OptionSectionImpl       rootSection_;
 217 };
 218
 219 } // namespace internal
 220
 221 } // namespace gmx
 222
 223 #endif