diff options
author | 2016-09-02 23:52:30 -0400 | |
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committer | 2016-09-02 23:52:30 -0400 | |
commit | 965fb61f95c4f788278b9a338c02586dc2fb04ed (patch) | |
tree | 65d570833400d3d251899816c73df4fcc316cb10 /src/lib/util/opresolv.h | |
parent | 2c9e00b96d89b78203c0b11b7bdcfd28f3792d96 (diff) |
Attempting to make option_guide and option_guide::entry POD types; need to figure out a better way to do OPTION_GUIDE_EXTERN
Diffstat (limited to 'src/lib/util/opresolv.h')
-rw-r--r-- | src/lib/util/opresolv.h | 67 |
1 files changed, 48 insertions, 19 deletions
diff --git a/src/lib/util/opresolv.h b/src/lib/util/opresolv.h index 4c059a88d72..fdc2e6b8758 100644 --- a/src/lib/util/opresolv.h +++ b/src/lib/util/opresolv.h @@ -51,20 +51,20 @@ //************************************************************************** #define OPTION_GUIDE_START(option_guide_) \ - const util::option_guide option_guide_ = \ - { + const auto option_guide_ = util::make_option_guide( #define OPTION_GUIDE_END \ - }; + util::option_guide::entry(util::option_guide::entry::option_type::INVALID, 0, nullptr, nullptr) \ + ); #define OPTION_GUIDE_EXTERN(option_guide_) \ - extern const util::option_guide option_guide_ + extern const util::option_guide &option_guide_ #define OPTION_INT(option_char, identifier, display_name) \ - { util::option_guide::entry::option_type::INT, (option_char), (identifier), (display_name) }, + util::option_guide::entry(util::option_guide::entry::option_type::INT, (option_char), (identifier), (display_name)), #define OPTION_STRING(option_char, identifier, display_name) \ - { util::option_guide::entry::option_type::STRING, (option_char), (identifier), (display_name) }, + util::option_guide::entry(util::option_guide::entry::option_type::STRING, (option_char), (identifier), (display_name)), #define OPTION_ENUM_START(option_char, identifier, display_name) \ - { util::option_guide::entry::option_type::ENUM_BEGIN, (option_char), (identifier), (display_name) }, + util::option_guide::entry(util::option_guide::entry::option_type::ENUM_BEGIN, (option_char), (identifier), (display_name)), #define OPTION_ENUM(value, identifier, display_name) \ - { util::option_guide::entry::option_type::ENUM_VALUE, (value), (identifier), (display_name) }, + util::option_guide::entry(util::option_guide::entry::option_type::ENUM_VALUE, (value), (identifier), (display_name)), #define OPTION_ENUM_END namespace util { @@ -79,12 +79,18 @@ public: public: enum class option_type { + INVALID, INT, STRING, ENUM_BEGIN, ENUM_VALUE }; + constexpr entry() + : m_type(option_type::INVALID), m_parameter(0), m_identifier(nullptr), m_display_name(nullptr) + { + } + constexpr entry(option_type type, int parameter = 0, const char *identifier = nullptr, const char *display_name = nullptr) : m_type(type), m_parameter(parameter), m_identifier(identifier), m_display_name(display_name) { @@ -103,20 +109,43 @@ public: const char *m_display_name; }; - typedef std::vector<option_guide::entry> entrylist; + // methods + const entry *begin() const { return m_begin; } + const entry *end() const { return m_end; } - option_guide(std::initializer_list<entry> entries) - : m_entries(entries) +protected: + option_guide(const entry *begin, const entry *end) + : m_begin(begin), m_end(end) { } - // methods - const entrylist &entries() const { return m_entries; } private: - entrylist m_entries; + const entry *m_begin; + const entry *m_end; }; +// ======================> option_guide_impl + +template <std::size_t Count> +class option_guide_impl : protected std::array<option_guide::entry, Count>, public option_guide +{ +public: + template<typename... T> + option_guide_impl(T &&... elems) + : std::array<option_guide::entry, Count>({ std::forward<T>(elems)... }) + , option_guide(&(*this)[0], &(*this)[0] + Count - 1) + { + } +}; + +template <typename... T> +option_guide_impl<sizeof...(T)> make_option_guide(T &&... elems) +{ + return option_guide_impl<sizeof...(T)>(std::forward<T>(elems)...); +} + + // ======================> option_resolution class option_resolution @@ -163,8 +192,8 @@ public: int value_int() const; const std::string &default_value() const { return m_default_value; } const rangelist &ranges() const { return m_ranges; } - const option_guide::entrylist::const_iterator enum_value_begin() const { return m_enum_value_begin; } - const option_guide::entrylist::const_iterator enum_value_end() const { return m_enum_value_end; } + const option_guide::entry *enum_value_begin() const { return m_enum_value_begin; } + const option_guide::entry *enum_value_end() const { return m_enum_value_end; } // accessors for guide data option_guide::entry::option_type option_type() const { return m_guide_entry.type(); } @@ -186,8 +215,8 @@ public: private: // references to the option guide const option_guide::entry & m_guide_entry; - option_guide::entrylist::const_iterator m_enum_value_begin; - option_guide::entrylist::const_iterator m_enum_value_end; + const option_guide::entry * m_enum_value_begin; + const option_guide::entry * m_enum_value_end; // runtime state bool m_is_pertinent; @@ -197,7 +226,7 @@ public: // methods void parse_specification(const char *specification); - void set_enum_value_range(option_guide::entrylist::const_iterator begin, option_guide::entrylist::const_iterator end); + void set_enum_value_range(const option_guide::entry *begin, const option_guide::entry *end); static std::string numeric_value(int value); rangelist::const_iterator find_in_ranges(int value) const; }; |