Variant for storing WML attributes. More...

#include <config_attribute_value.hpp>

Classes
class	equality_visitor
	Visitor handling equality checks. More...

class	string_visitor
	Visitor for converting a variant to a string. More...

class	true_false
	A wrapper for bool to get the correct streaming ("true"/"false"). More...

class	yes_no
	A wrapper for bool to get the correct streaming ("yes"/"no"). More...

Public Member Functions
	config_attribute_value ()
	Default implementation, but defined out-of-line for efficiency reasons. More...

	~config_attribute_value ()
	Default implementation, but defined out-of-line for efficiency reasons. More...

	config_attribute_value (const config_attribute_value &)
	Default implementation, but defined out-of-line for efficiency reasons. More...

config_attribute_value &	operator= (const config_attribute_value &)
	Default implementation, but defined out-of-line for efficiency reasons. More...

config_attribute_value &	operator= (bool v)

config_attribute_value &	operator= (int v)

config_attribute_value &	operator= (long v)

config_attribute_value &	operator= (long long v)

config_attribute_value &	operator= (unsigned v)

config_attribute_value &	operator= (unsigned long v)

config_attribute_value &	operator= (unsigned long long v)

config_attribute_value &	operator= (double v)

config_attribute_value &	operator= (const char *v)

config_attribute_value &	operator= (const std::string &v)

config_attribute_value &	operator= (const t_string &v)

template<typename T >
std::enable_if_t< std::is_base_of_v< enum_tag, T >, config_attribute_value & >	operator= (const T &v)

void	write_if_not_empty (const std::string &v)
	Calls operator=(const std::string&) if v is not empty. More...

bool	to_bool (bool def=false) const

int	to_int (int def=0) const

long long	to_long_long (long long def=0) const

unsigned	to_unsigned (unsigned def=0) const

std::size_t	to_size_t (std::size_t def=0) const

std::time_t	to_time_t (std::time_t def=0) const

double	to_double (double def=0.) const

std::string	str (const std::string &fallback="") const

t_string	t_str () const

template<typename T >
std::enable_if_t< std::is_base_of_v< enum_tag, T >, T >	to_enum (const T &v) const

	operator int () const

	operator std::string () const

	operator t_string () const

	operator bool () const

bool	blank () const
	Tests for an attribute that was never set. More...

bool	empty () const
	Tests for an attribute that either was never set or was set to "". More...

bool	operator== (const config_attribute_value &other) const
	Checks for equality of the attribute values when viewed as strings. More...

bool	operator!= (const config_attribute_value &other) const

bool	equals (const std::string &str) const
	Checks for equality of the attribute values when viewed as strings. More...

template<typename T >
std::enable_if_t< std::is_same_v< const std::string, std::add_const_t< T > >, bool > friend	operator== (const config_attribute_value &val, const T &str)

template<typename T >
std::enable_if_t< std::is_same_v< const char *, T >, bool > friend	operator== (const config_attribute_value &val, T str)

template<typename T >
bool friend	operator== (const T &str, const config_attribute_value &val)

template<typename T >
bool friend	operator!= (const config_attribute_value &val, const T &str)

template<typename T >
bool friend	operator!= (const T &str, const config_attribute_value &val)

template<typename V >
auto	apply_visitor (const V &visitor) const
	Visitor support: Applies a visitor to the underlying variant. More...

Private Types
typedef utils::variant< utils::monostate, true_false, yes_no, int, unsigned long long, double, std::string, t_string >	value_type

Private Attributes
value_type	value_
	The stored value will always use the first type from the variant definition that can represent it and that can be streamed to the correct string representation (if applicable). More...

Static Private Attributes
static const std::string	s_yes

static const std::string	s_no

static const std::string	s_true

static const std::string	s_false

Friends
std::ostream &	operator<< (std::ostream &os, const true_false &v)

std::ostream &	operator<< (std::ostream &os, const yes_no &v)

std::ostream &	operator<< (std::ostream &os, const config_attribute_value &v)

Detailed Description

Variant for storing WML attributes.

The most efficient type is used when assigning a value. For instance, strings "yes", "no", "true", "false" will be detected and stored as boolean.

Note: The blank variant is only used when querying missing attributes. It is not stored in config objects.

Definition at line 53 of file config_attribute_value.hpp.

Member Typedef Documentation

◆ value_type

typedef utils::variant<utils::monostate, true_false, yes_no, int, unsigned long long, double, std::string, t_string > config_attribute_value::value_type

private

Definition at line 95 of file config_attribute_value.hpp.

Constructor & Destructor Documentation

◆ config_attribute_value() [1/2]

config_attribute_value::config_attribute_value ( )

Default implementation, but defined out-of-line for efficiency reasons.

Definition at line 44 of file config_attribute_value.cpp.

◆ ~config_attribute_value()

config_attribute_value::~config_attribute_value ( )

Default implementation, but defined out-of-line for efficiency reasons.

Definition at line 50 of file config_attribute_value.cpp.

◆ config_attribute_value() [2/2]

config_attribute_value::config_attribute_value ( const config_attribute_value & that )

Default implementation, but defined out-of-line for efficiency reasons.

Definition at line 55 of file config_attribute_value.cpp.

Member Function Documentation

◆ apply_visitor()

template<typename V >

auto config_attribute_value::apply_visitor ( const V & visitor ) const

inline

Visitor support: Applies a visitor to the underlying variant.

(See the documentation for Boost.Variant.)

Definition at line 235 of file config_attribute_value.hpp.

Referenced by attack_type::add_formula_context(), unit_filter_impl::unit_filter_compound::create_attribute(), vconfig::expand(), unit_filter_impl::unit_filter_compound::fill(), luaW_pushscalar(), operator<<(), unit::parse_upkeep(), str(), to_double(), to_int(), to_long_long(), to_size_t(), to_time_t(), to_unsigned(), and write_key_val().

◆ blank()

bool config_attribute_value::blank ( ) const

Tests for an attribute that was never set.

Definition at line 345 of file config_attribute_value.cpp.

References value_.

Referenced by name_generator_factory::add_name_generator_from_config(), unit_filter_impl::unit_filter_compound::create_attribute(), empty(), unit_filter::first_match_on_map(), unit::get_ability_list(), team::get_side_color_id_from_config(), team::get_village(), team_builder::handle_leader(), unit_type::has_random_traits(), config::inherit_attributes(), side_filter::match_internal(), operator bool(), and game_events::WML_HANDLER_FUNCTION().

◆ empty()

bool config_attribute_value::empty ( ) const

Tests for an attribute that either was never set or was set to "".

Definition at line 353 of file config_attribute_value.cpp.

References blank(), p, and value_.

Referenced by add_simple_anim(), ng::connect_engine::connect_engine(), do_interpolation(), unit_abilities::filter_base_matches(), unit_filter::first_match_on_map(), help::generate_era_topics(), help::generate_faction_topics(), savegame::save_index_class::get(), team::get_side_color_id_from_config(), game_lua_kernel::get_sides_vector(), campaignd::server::handle_delete(), game_lua_kernel::impl_current_get(), terrain_filter::match_internal(), operator bool(), unit::parse_upkeep(), terrain_label::read(), saved_game::set_defaults(), carryover_info::transfer_to(), game_events::wml_menu_item::update_command(), verify_and_clear_global_variable(), verify_and_get_global_variable(), verify_and_set_global_variable(), and game_events::WML_HANDLER_FUNCTION().

◆ equals()

bool config_attribute_value::equals ( const std::string & str ) const

Checks for equality of the attribute values when viewed as strings.

Exception: Boolean synonyms can be equal ("yes" == "true"). Note: Blanks have no string representation, so do not equal "" (an empty string). Also note that translatable string are never equal to non translatable strings.

Definition at line 415 of file config_attribute_value.cpp.

References str().

Referenced by operator!=(), and operator==().

◆ operator bool()

config_attribute_value::operator bool ( ) const

inlineexplicit

Definition at line 176 of file config_attribute_value.hpp.

References blank(), empty(), operator==(), and to_bool().

◆ operator int()

config_attribute_value::operator int ( ) const

inline

Definition at line 172 of file config_attribute_value.hpp.

References to_int().

◆ operator std::string()

config_attribute_value::operator std::string ( ) const

inline

Definition at line 173 of file config_attribute_value.hpp.

References config_attribute_value::true_false::str().

◆ operator t_string()

config_attribute_value::operator t_string ( ) const

inline

Definition at line 174 of file config_attribute_value.hpp.

References t_str().

◆ operator!=() [1/3]

bool config_attribute_value::operator!= ( const config_attribute_value & other ) const

inline

Definition at line 186 of file config_attribute_value.hpp.

References equals(), and operator==().

◆ operator!=() [2/3]

template<typename T >

bool friend config_attribute_value::operator!=	(	const config_attribute_value &	val,
		const T &	str
	)

inline

Definition at line 215 of file config_attribute_value.hpp.

References config_attribute_value::true_false::str().

◆ operator!=() [3/3]

template<typename T >

bool friend config_attribute_value::operator!=	(	const T &	str,
		const config_attribute_value &	val
	)

inline

Definition at line 221 of file config_attribute_value.hpp.

References operator<<, and config_attribute_value::true_false::str().

◆ operator=() [1/13]

config_attribute_value & config_attribute_value::operator= ( const config_attribute_value & that )

Default implementation, but defined out-of-line for efficiency reasons.

Definition at line 61 of file config_attribute_value.cpp.

References value_.

Referenced by operator=().

◆ operator=() [2/13]

config_attribute_value & config_attribute_value::operator= ( bool v )

Definition at line 67 of file config_attribute_value.cpp.

References value_.

◆ operator=() [3/13]

config_attribute_value & config_attribute_value::operator= ( int v )

Definition at line 73 of file config_attribute_value.cpp.

References value_.

◆ operator=() [4/13]

config_attribute_value& config_attribute_value::operator= ( long v )

inline

Definition at line 130 of file config_attribute_value.hpp.

References operator=().

Referenced by operator=().

◆ operator=() [5/13]

config_attribute_value & config_attribute_value::operator= ( long long v )

Definition at line 79 of file config_attribute_value.cpp.

References value_.

◆ operator=() [6/13]

config_attribute_value& config_attribute_value::operator= ( unsigned v )

inline

Definition at line 132 of file config_attribute_value.hpp.

References operator=().

Referenced by operator=().

◆ operator=() [7/13]

config_attribute_value& config_attribute_value::operator= ( unsigned long v )

inline

Definition at line 133 of file config_attribute_value.hpp.

References operator=().

Referenced by operator=().

◆ operator=() [8/13]

config_attribute_value & config_attribute_value::operator= ( unsigned long long v )

Definition at line 100 of file config_attribute_value.cpp.

References value_.

◆ operator=() [9/13]

config_attribute_value & config_attribute_value::operator= ( double v )

Definition at line 111 of file config_attribute_value.cpp.

References i, and value_.

◆ operator=() [10/13]

config_attribute_value& config_attribute_value::operator= ( const char * v )

inline

Definition at line 138 of file config_attribute_value.hpp.

References operator=().

Referenced by operator=().

◆ operator=() [11/13]

config_attribute_value & config_attribute_value::operator= ( const std::string & v )

Definition at line 158 of file config_attribute_value.cpp.

References d, i, s_false, s_no, s_true, s_yes, and value_.

◆ operator=() [12/13]

config_attribute_value & config_attribute_value::operator= ( const t_string & v )

Definition at line 223 of file config_attribute_value.cpp.

References t_string::str(), t_string::translatable(), and value_.

◆ operator=() [13/13]

template<typename T >

std::enable_if_t<std::is_base_of_v<enum_tag, T>, config_attribute_value&> config_attribute_value::operator= ( const T & v )

inline

Definition at line 142 of file config_attribute_value.hpp.

References operator=(), config_attribute_value::true_false::str(), t_str(), to_bool(), to_double(), to_int(), to_long_long(), to_size_t(), to_time_t(), to_unsigned(), and write_if_not_empty().

◆ operator==() [1/4]

bool config_attribute_value::operator== ( const config_attribute_value & other ) const

Checks for equality of the attribute values when viewed as strings.

Exception: Boolean synonyms can be equal ("yes" == "true"). Note: Blanks have no string representation, so do not equal "" (an empty string).

Definition at line 404 of file config_attribute_value.cpp.

References value_.

Referenced by operator bool(), and operator!=().

◆ operator==() [2/4]

template<typename T >

std::enable_if_t<std::is_same_v<const std::string, std::add_const_t<T> >, bool> friend config_attribute_value::operator==	(	const config_attribute_value &	val,
		const T &	str
	)

inline

Definition at line 196 of file config_attribute_value.hpp.

References equals().

◆ operator==() [3/4]

template<typename T >

std::enable_if_t<std::is_same_v<const char*, T>, bool> friend config_attribute_value::operator==	(	const config_attribute_value &	val,
		T	str
	)

inline

Definition at line 203 of file config_attribute_value.hpp.

References equals().

◆ operator==() [4/4]

template<typename T >

bool friend config_attribute_value::operator==	(	const T &	str,
		const config_attribute_value &	val
	)

inline

Definition at line 209 of file config_attribute_value.hpp.

References config_attribute_value::true_false::str().

◆ str()

std::string config_attribute_value::str ( const std::string & fallback = "" ) const

◆ t_str()

t_string config_attribute_value::t_str ( ) const

Definition at line 333 of file config_attribute_value.cpp.

References p, str(), and value_.

Referenced by ng::connect_engine::connect_engine(), unit_filter_impl::unit_filter_compound::fill(), help::generate_era_topics(), help::generate_faction_topics(), unit::get_ability_list(), operator t_string(), and operator=().

◆ to_bool()

bool config_attribute_value::to_bool ( bool def = false ) const

Definition at line 240 of file config_attribute_value.cpp.

References d, i, p, s, and value_.

Referenced by gui2::dialogs::mp_options_helper::display_custom_options(), unit_filter_impl::unit_filter_compound::fill(), operator bool(), operator=(), tod_manager::resolve_random(), and game_events::wml_menu_item::update().

◆ to_double()

double config_attribute_value::to_double ( double def = 0. ) const

Definition at line 302 of file config_attribute_value.cpp.

References apply_visitor().

Referenced by operator=().

◆ to_enum()

template<typename T >

std::enable_if_t<std::is_base_of_v<enum_tag, T>, T> config_attribute_value::to_enum ( const T & v ) const

inline

Template Parameters

T	a type created with MAKE_ENUM macro NOTE: since T::VALUE constants is not of type T but of the underlying enum type you must specify the template parameter explicitly TODO: Fix this in c++11 using constexpr types.

Definition at line 166 of file config_attribute_value.hpp.

References config_attribute_value::true_false::str().

◆ to_int()

int config_attribute_value::to_int ( int def = 0 ) const

Definition at line 277 of file config_attribute_value.cpp.

References apply_visitor().

Referenced by gui2::dialogs::mp_options_helper::display_custom_options(), unit_abilities::filter_base_matches(), get_global_variable(), terrain_filter::match_internal(), movetype::terrain_info::data::merge(), movetype::resistances::merge(), operator int(), operator=(), terrain_label::read(), verify_and_clear_global_variable(), verify_and_get_global_variable(), and game_events::WML_HANDLER_FUNCTION().

◆ to_long_long()

long long config_attribute_value::to_long_long ( long long def = 0 ) const

Definition at line 282 of file config_attribute_value.cpp.

References apply_visitor().

Referenced by operator=().

◆ to_size_t()

std::size_t config_attribute_value::to_size_t ( std::size_t def = 0 ) const

Definition at line 292 of file config_attribute_value.cpp.

References apply_visitor().

Referenced by operator=().

◆ to_time_t()

std::time_t config_attribute_value::to_time_t ( std::time_t def = 0 ) const

Definition at line 297 of file config_attribute_value.cpp.

References apply_visitor().

Referenced by savegame::save_index_class::get(), and operator=().

◆ to_unsigned()

unsigned config_attribute_value::to_unsigned ( unsigned def = 0 ) const

Definition at line 287 of file config_attribute_value.cpp.

References apply_visitor().

Referenced by team::get_side_color_id_from_config(), and operator=().

◆ write_if_not_empty()

void config_attribute_value::write_if_not_empty ( const std::string & v )

Calls operator=(const std::string&) if v is not empty.

Definition at line 233 of file config_attribute_value.cpp.

Referenced by operator=().

Friends And Related Function Documentation

◆ operator<< [1/3]

std::ostream& operator<<	(	std::ostream &	os,
		const true_false &	v
	)

friend

Definition at line 72 of file config_attribute_value.hpp.

Referenced by operator!=().

◆ operator<< [2/3]

std::ostream& operator<<	(	std::ostream &	os,
		const yes_no &	v
	)

friend

Definition at line 90 of file config_attribute_value.hpp.

◆ operator<< [3/3]

std::ostream& operator<<	(	std::ostream &	os,
		const config_attribute_value &	v
	)

friend

Definition at line 426 of file config_attribute_value.cpp.

Member Data Documentation

◆ s_false

const std::string config_attribute_value::s_false

staticprivate

Definition at line 243 of file config_attribute_value.hpp.

Referenced by operator=(), and config_attribute_value::true_false::str().

◆ s_no

const std::string config_attribute_value::s_no

staticprivate

Definition at line 242 of file config_attribute_value.hpp.

Referenced by operator=(), and config_attribute_value::yes_no::str().

◆ s_true

const std::string config_attribute_value::s_true

staticprivate

Definition at line 243 of file config_attribute_value.hpp.

Referenced by operator=(), and config_attribute_value::true_false::str().

◆ s_yes

const std::string config_attribute_value::s_yes

staticprivate

Definition at line 242 of file config_attribute_value.hpp.

Referenced by operator=(), and config_attribute_value::yes_no::str().

◆ value_

value_type config_attribute_value::value_

private

The stored value will always use the first type from the variant definition that can represent it and that can be streamed to the correct string representation (if applicable).

This is enforced upon assignment.

Definition at line 115 of file config_attribute_value.hpp.

Referenced by blank(), empty(), operator=(), operator==(), t_str(), and to_bool().

The documentation for this class was generated from the following files:

Classes

Public Member Functions

Private Types

Private Attributes

Static Private Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ value_type

Constructor & Destructor Documentation

◆ config_attribute_value() [1/2]

◆ ~config_attribute_value()

◆ config_attribute_value() [2/2]

Member Function Documentation

◆ apply_visitor()

◆ blank()

◆ empty()

◆ equals()

◆ operator bool()

◆ operator int()

◆ operator std::string()

◆ operator t_string()

◆ operator!=() [1/3]

◆ operator!=() [2/3]

◆ operator!=() [3/3]

◆ operator=() [1/13]

◆ operator=() [2/13]

◆ operator=() [3/13]

◆ operator=() [4/13]

◆ operator=() [5/13]

◆ operator=() [6/13]

◆ operator=() [7/13]

◆ operator=() [8/13]

◆ operator=() [9/13]

◆ operator=() [10/13]

◆ operator=() [11/13]

◆ operator=() [12/13]

◆ operator=() [13/13]

◆ operator==() [1/4]

◆ operator==() [2/4]

◆ operator==() [3/4]

◆ operator==() [4/4]

◆ str()

◆ t_str()

◆ to_bool()

◆ to_double()

◆ to_enum()

◆ to_int()

◆ to_long_long()

◆ to_size_t()

◆ to_time_t()

◆ to_unsigned()

◆ write_if_not_empty()

Friends And Related Function Documentation

◆ operator<< [1/3]

◆ operator<< [2/3]

◆ operator<< [3/3]

Member Data Documentation

◆ s_false

◆ s_no

◆ s_true

◆ s_yes

◆ value_