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-rw-r--r--src/lib/util/options.h294
1 files changed, 117 insertions, 177 deletions
diff --git a/src/lib/util/options.h b/src/lib/util/options.h
index a36ff95cab6..edf7f8600c8 100644
--- a/src/lib/util/options.h
+++ b/src/lib/util/options.h
@@ -13,13 +13,26 @@
#include "corefile.h"
#include <unordered_map>
-#include <sstream>
+
//**************************************************************************
// CONSTANTS
//**************************************************************************
+// option types
+const uint32_t OPTION_TYPE_MASK = 0x0007; // up to 8 different types
+enum
+{
+ OPTION_INVALID, // invalid
+ OPTION_HEADER, // a header item
+ OPTION_COMMAND, // a command
+ OPTION_BOOLEAN, // boolean option
+ OPTION_INTEGER, // integer option
+ OPTION_FLOAT, // floating-point option
+ OPTION_STRING // string option
+};
+
// option priorities
const int OPTION_PRIORITY_DEFAULT = 0; // defaults are at 0 priority
const int OPTION_PRIORITY_LOW = 50; // low priority
@@ -27,55 +40,20 @@ const int OPTION_PRIORITY_NORMAL = 100; // normal priority
const int OPTION_PRIORITY_HIGH = 150; // high priority
const int OPTION_PRIORITY_MAXIMUM = 255; // maximum priority
+const uint32_t OPTION_FLAG_INTERNAL = 0x40000000;
+
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
-struct options_entry;
-
-// exception thrown by core_options when an illegal request is made
-class options_exception : public std::exception
-{
-public:
- const std::string &message() const { return m_message; }
- virtual const char *what() const noexcept override { return message().c_str(); }
-
-protected:
- options_exception(std::string &&message);
-
-private:
- std::string m_message;
-};
-
-class options_warning_exception : public options_exception
-{
-public:
- template <typename... Params> options_warning_exception(const char *fmt, Params &&...args)
- : options_warning_exception(util::string_format(fmt, std::forward<Params>(args)...))
- {
- }
-
- options_warning_exception(std::string &&message);
- options_warning_exception(const options_warning_exception &) = default;
- options_warning_exception(options_warning_exception &&) = default;
- options_warning_exception& operator=(const options_warning_exception &) = default;
- options_warning_exception& operator=(options_warning_exception &&) = default;
-};
-
-class options_error_exception : public options_exception
+// static structure describing a single option with its description and default value
+struct options_entry
{
-public:
- template <typename... Params> options_error_exception(const char *fmt, Params &&...args)
- : options_error_exception(util::string_format(fmt, std::forward<Params>(args)...))
- {
- }
-
- options_error_exception(std::string &&message);
- options_error_exception(const options_error_exception &) = default;
- options_error_exception(options_error_exception &&) = default;
- options_error_exception& operator=(const options_error_exception &) = default;
- options_error_exception& operator=(options_error_exception &&) = default;
+ const char * name; // name on the command line
+ const char * defvalue; // default value of this argument
+ uint32_t flags; // flags to describe the option
+ const char * description; // description for -showusage
};
@@ -85,95 +63,94 @@ class core_options
static const int MAX_UNADORNED_OPTIONS = 16;
public:
- enum class option_type
- {
- INVALID, // invalid
- HEADER, // a header item
- COMMAND, // a command
- BOOLEAN, // boolean option
- INTEGER, // integer option
- FLOAT, // floating-point option
- STRING // string option
- };
-
// information about a single entry in the options
class entry
{
- public:
- typedef std::shared_ptr<entry> shared_ptr;
- typedef std::weak_ptr<entry> weak_ptr;
-
- // constructor/destructor
- entry(std::vector<std::string> &&names, option_type type = option_type::STRING, const char *description = nullptr);
- entry(std::string &&name, option_type type = option_type::STRING, const char *description = nullptr);
- entry(const entry &) = delete;
- entry(entry &&) = delete;
- entry& operator=(const entry &) = delete;
- entry& operator=(entry &&) = delete;
- virtual ~entry();
-
- // accessors
- const std::vector<std::string> &names() const { return m_names; }
- const std::string &name() const { return m_names[0]; }
- virtual const char *value() const;
- int priority() const { return m_priority; }
- option_type type() const { return m_type; }
- const char *description() const { return m_description; }
- virtual const std::string &default_value() const;
- virtual const char *minimum() const;
- virtual const char *maximum() const;
- bool has_range() const;
+ friend class core_options;
+ friend class simple_list<entry>;
- // mutators
- void set_value(std::string &&newvalue, int priority, bool always_override = false);
- virtual void set_default_value(std::string &&newvalue);
- void set_description(const char *description) { m_description = description; }
- void set_value_changed_handler(std::function<void(const char *)> &&handler) { m_value_changed_handler = std::move(handler); }
+ // construction/destruction
+ entry(const char *name, const char *description, uint32_t flags = 0, const char *defvalue = nullptr);
- protected:
- virtual void internal_set_value(std::string &&newvalue) = 0;
+ public:
+ // getters
+ entry *next() const { return m_next; }
+ const char *name(int index = 0) const { return (index < ARRAY_LENGTH(m_name) && !m_name[index].empty()) ? m_name[index].c_str() : nullptr; }
+ const char *description() const { return m_description; }
+ const char *value() const { return m_data.c_str(); }
+ const char *default_value() const { return m_defdata.c_str(); }
+ const char *minimum() const { return m_minimum.c_str(); }
+ const char *maximum() const { return m_maximum.c_str(); }
+ int type() const { return (m_flags & OPTION_TYPE_MASK); }
+ uint32_t flags() const { return m_flags; }
+ bool is_header() const { return type() == OPTION_HEADER; }
+ bool is_command() const { return type() == OPTION_COMMAND; }
+ bool is_internal() const { return m_flags & OPTION_FLAG_INTERNAL; }
+ bool has_range() const { return (!m_minimum.empty() && !m_maximum.empty()); }
+ int priority() const { return m_priority; }
+ bool is_changed() const { return m_changed; }
+
+ // setters
+ void set_value(const char *newvalue, int priority);
+ void set_default_value(const char *defvalue);
+ void set_description(const char *description);
+ void set_flag(uint32_t mask, uint32_t flag);
+ void mark_changed() { m_changed = true; }
+ void revert(int priority_hi, int priority_lo);
private:
- void validate(const std::string &value);
-
- std::vector<std::string> m_names;
- int m_priority;
- core_options::option_type m_type;
- const char * m_description;
- std::function<void(const char *)> m_value_changed_handler;
+ // internal state
+ entry * m_next; // link to the next data
+ uint32_t m_flags; // flags from the entry
+ bool m_error_reported; // have we reported an error on this option yet?
+ int m_priority; // priority of the data set
+ const char * m_description; // description for this item
+ std::string m_name[4]; // up to 4 names for the item
+ std::string m_data; // data for this item
+ std::string m_defdata; // default data for this item
+ std::string m_minimum; // minimum value
+ std::string m_maximum; // maximum value
+ bool m_changed; // changed flag
};
// construction/destruction
core_options();
- core_options(const core_options &) = delete;
- core_options(core_options &&) = delete;
- core_options& operator=(const core_options &) = delete;
- core_options& operator=(core_options &&) = delete;
+ core_options(const options_entry *entrylist);
+ core_options(const options_entry *entrylist1, const options_entry *entrylist2);
+ core_options(const options_entry *entrylist1, const options_entry *entrylist2, const options_entry *entrylist3);
+ core_options(const core_options &src);
virtual ~core_options();
+ // operators
+ core_options &operator=(const core_options &rhs);
+ bool operator==(const core_options &rhs);
+ bool operator!=(const core_options &rhs);
+
// getters
+ entry *first() const { return m_entrylist.first(); }
const std::string &command() const { return m_command; }
- const entry::shared_ptr get_entry(const std::string &name) const;
- entry::shared_ptr get_entry(const std::string &name);
- const std::vector<entry::shared_ptr> &entries() const { return m_entries; }
- bool exists(const std::string &name) const { return get_entry(name) != nullptr; }
- bool header_exists(const char *description) const;
+ entry *get_entry(const char *name) const;
+
+ // range iterators
+ using auto_iterator = simple_list<entry>::auto_iterator;
+ auto_iterator begin() const { return m_entrylist.begin(); }
+ auto_iterator end() const { return m_entrylist.end(); }
// configuration
- void add_entry(entry::shared_ptr &&entry, const char *after_header = nullptr);
- void add_entry(const options_entry &entry, bool override_existing = false);
- void add_entry(std::vector<std::string> &&names, const char *description, option_type type, std::string &&default_value = "", std::string &&minimum = "", std::string &&maximum = "");
- void add_header(const char *description);
+ void add_entry(const char *name, const char *description, uint32_t flags = 0, const char *defvalue = nullptr, bool override_existing = false);
+ void add_entry(const options_entry &data, bool override_existing = false) { add_entry(data.name, data.description, data.flags, data.defvalue, override_existing); }
void add_entries(const options_entry *entrylist, bool override_existing = false);
void set_default_value(const char *name, const char *defvalue);
void set_description(const char *name, const char *description);
void remove_entry(entry &delentry);
- void set_value_changed_handler(const std::string &name, std::function<void(const char *)> &&handler);
// parsing/input
- void parse_command_line(std::vector<std::string> &args, int priority);
- void parse_ini_file(util::core_file &inifile, int priority, bool always_override);
- void copy_from(const core_options &that);
+ bool parse_command_line(std::vector<std::string> &args, int priority, std::string &error_string);
+ bool parse_ini_file(util::core_file &inifile, int priority, int ignore_priority, std::string &error_string);
+ bool pluck_from_command_line(std::vector<std::string> &args, const std::string &name, std::string &result);
+
+ // reverting
+ void revert(int priority_hi = OPTION_PRIORITY_MAXIMUM, int priority_lo = OPTION_PRIORITY_DEFAULT);
// output
std::string output_ini(const core_options *diff = nullptr) const;
@@ -182,88 +159,51 @@ public:
// reading
const char *value(const char *option) const;
const char *description(const char *option) const;
- bool bool_value(const char *option) const { return int_value(option) != 0; }
- int int_value(const char *option) const { return atoi(value(option)); }
- float float_value(const char *option) const { return atof(value(option)); }
+ int priority(const char *option) const;
+ bool bool_value(const char *name) const { return (atoi(value(name)) != 0); }
+ int int_value(const char *name) const { return atoi(value(name)); }
+ float float_value(const char *name) const { return atof(value(name)); }
+ bool exists(const char *name) const;
// setting
- void set_value(const std::string &name, const std::string &value, int priority);
- void set_value(const std::string &name, std::string &&value, int priority);
- void set_value(const std::string &name, int value, int priority);
- void set_value(const std::string &name, float value, int priority);
+ bool set_value(const char *name, const char *value, int priority, std::string &error_string);
+ bool set_value(const char *name, int value, int priority, std::string &error_string);
+ bool set_value(const char *name, float value, int priority, std::string &error_string);
+ void set_flag(const char *name, uint32_t mask, uint32_t flags);
+ void mark_changed(const char *name);
// misc
static const char *unadorned(int x = 0) { return s_option_unadorned[std::min(x, MAX_UNADORNED_OPTIONS - 1)]; }
+ int options_count() const { return m_entrylist.count(); }
-private:
- class simple_entry : public entry
- {
- public:
- // construction/destruction
- simple_entry(std::vector<std::string> &&names, const char *description, core_options::option_type type, std::string &&defdata, std::string &&minimum, std::string &&maximum);
- simple_entry(const simple_entry &) = delete;
- simple_entry(simple_entry &&) = delete;
- simple_entry& operator=(const simple_entry &) = delete;
- simple_entry& operator=(simple_entry &&) = delete;
- ~simple_entry();
-
- // getters
- virtual const char *value() const override;
- virtual const char *minimum() const override;
- virtual const char *maximum() const override;
- virtual const std::string &default_value() const override;
-
- virtual void set_default_value(std::string &&newvalue) override;
-
- protected:
- virtual void internal_set_value(std::string &&newvalue) override;
-
- private:
- // internal state
- std::string m_data; // data for this item
- std::string m_defdata; // default data for this item
- std::string m_minimum; // minimum value
- std::string m_maximum; // maximum value
- };
-
- // used internally in core_options
- enum class condition_type
+protected:
+ // This is a hook to allow option value retrieval to be overridden for various reasons; this is a crude
+ // extensibility mechanism that should really be replaced by something better
+ enum class override_get_value_result
{
NONE,
- WARN,
- ERR
+ OVERRIDE,
+ SKIP
};
+ virtual void value_changed(const std::string &name, const std::string &value) {}
+ virtual override_get_value_result override_get_value(const char *name, std::string &value) const { return override_get_value_result::NONE; }
+ virtual bool override_set_value(const char *name, const std::string &value) { return false; }
+
+private:
// internal helpers
- void add_to_entry_map(std::string &&name, entry::shared_ptr &entry);
- void prettify_and_set_value(entry &curentry, std::string &&data, int priority, std::ostream &error_stream, condition_type &condition);
- void throw_options_exception_if_appropriate(condition_type condition, std::ostringstream &error_stream);
+ void reset();
+ void append_entry(entry &newentry);
+ void copyfrom(const core_options &src);
+ bool validate_and_set_data(entry &curentry, std::string &&newdata, int priority, std::string &error_string);
// internal state
- std::vector<entry::shared_ptr> m_entries; // cannonical list of entries
- std::unordered_map<std::string, entry::weak_ptr> m_entrymap; // map for fast lookup
- std::string m_command; // command found
- static const char *const s_option_unadorned[]; // array of unadorned option "names"
-};
-
-
-// static structure describing a single option with its description and default value
-struct options_entry
-{
- const char * name; // name on the command line
- const char * defvalue; // default value of this argument
- core_options::option_type type; // type of option
- const char * description; // description for -showusage
+ simple_list<entry> m_entrylist; // head of list of entries
+ std::unordered_map<std::string,entry *> m_entrymap; // map for fast lookup
+ std::string m_command; // command found
+ static const char *const s_option_unadorned[]; // array of unadorned option "names"
};
-// legacy option types
-const core_options::option_type OPTION_INVALID = core_options::option_type::INVALID;
-const core_options::option_type OPTION_HEADER = core_options::option_type::HEADER;
-const core_options::option_type OPTION_COMMAND = core_options::option_type::COMMAND;
-const core_options::option_type OPTION_BOOLEAN = core_options::option_type::BOOLEAN;
-const core_options::option_type OPTION_INTEGER = core_options::option_type::INTEGER;
-const core_options::option_type OPTION_FLOAT = core_options::option_type::FLOAT;
-const core_options::option_type OPTION_STRING = core_options::option_type::STRING;
#endif // MAME_LIB_UTIL_OPTIONS_H