lexical_cast.hpp File Reference

New lexcical_cast header. More...

#include <optional>
#include <cstdlib>
#include <limits>
#include <string>
#include <sstream>
#include <type_traits>

Include dependency graph for lexical_cast.hpp:

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Classes
struct	implementation::lexical_caster< To, From, ToEnable, FromEnable >
	Base class for the conversion. More...
struct	bad_lexical_cast
	Thrown when a lexical_cast fails. More...
struct	implementation::lexical_caster< To, From, ToEnable, FromEnable >
	Base class for the conversion. More...
struct	implementation::is_integral_v< std::remove_pointer_t< From > > >>
	Specialized conversion class. More...
struct	implementation::lexical_caster< long long, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< long long, std::string >
	Specialized conversion class. More...
struct	implementation::lexical_caster< To, From, std::enable_if_t< std::is_integral_v< To > &&std::is_signed_v< To > &&!std::is_same_v< To, long long > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< To, std::string, std::enable_if_t< std::is_integral_v< To > &&std::is_signed_v< To > &&!std::is_same_v< To, long long > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< To, From, std::enable_if_t< std::is_floating_point_v< To > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< To, std::string, std::enable_if_t< std::is_floating_point_v< To > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< unsigned long long, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< unsigned long long, std::string >
	Specialized conversion class. More...
struct	implementation::lexical_caster< To, From, std::enable_if_t< std::is_unsigned_v< To > &&!std::is_same_v< To, unsigned long long > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< To, std::string, std::enable_if_t< std::is_unsigned_v< To > > >
	Specialized conversion class. More...
struct	implementation::lexical_caster< bool, std::string >
	Specialized conversion class. More...
struct	implementation::lexical_caster< bool, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >
	Specialized conversion class. More...

Namespaces
	implementation
	Contains the implementation details for lexical_cast and shouldn't be used directly.

Macros
#define	LEXICAL_CAST_HPP_INCLUDED
#define	DEBUG_THROW(id)
	Throws an exception for debugging. More...
#define	LEXICAL_CAST_HPP_INCLUDED
#define	DEBUG_THROW(id)   throw id;

Functions
template<typename To , typename From >
To	lexical_cast (From value)
	Lexical cast converts one type to another. More...
template<typename To , typename From >
To	lexical_cast_default (From value, To fallback=To())
	Lexical cast converts one type to another with a fallback. More...

Detailed Description

New lexcical_cast header.

For debugging you can include this header in a namespace (to honor ODR) and have a set of functions that throws exceptions instead of doing the real job. This is done for the unit tests but should normally not be done.

Definition in file lexical_cast.hpp.

Macro Definition Documentation

DEBUG_THROW [1/2]

#define DEBUG_THROW

(

id

)

throw id;

DEBUG_THROW [2/2]

#define DEBUG_THROW

(

id

)

Throws an exception for debugging.

Parameters

id	The unique name to identify the function.

Note

this name is a user defined string and should not be modified once used!

Definition at line 43 of file test_lexical_cast.cpp.

Referenced by implementation::lexical_caster< To, From, ToEnable, FromEnable >::operator()(), implementation::is_integral_v< std::remove_pointer_t< From > > >>::operator()(), implementation::lexical_caster< long long, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< long long, std::string >::operator()(), implementation::lexical_caster< To, From, std::enable_if_t< std::is_integral_v< To > &&std::is_signed_v< To > &&!std::is_same_v< To, long long > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< To, std::string, std::enable_if_t< std::is_integral_v< To > &&std::is_signed_v< To > &&!std::is_same_v< To, long long > > >::operator()(), implementation::lexical_caster< To, From, std::enable_if_t< std::is_floating_point_v< To > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< To, std::string, std::enable_if_t< std::is_floating_point_v< To > > >::operator()(), implementation::lexical_caster< unsigned long long, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< unsigned long long, std::string >::operator()(), implementation::lexical_caster< To, From, std::enable_if_t< std::is_unsigned_v< To > &&!std::is_same_v< To, unsigned long long > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< To, std::string, std::enable_if_t< std::is_unsigned_v< To > > >::operator()(), implementation::lexical_caster< bool, std::string >::operator()(), and implementation::lexical_caster< bool, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()().

LEXICAL_CAST_HPP_INCLUDED [1/2]

#define LEXICAL_CAST_HPP_INCLUDED

LEXICAL_CAST_HPP_INCLUDED [2/2]

#define LEXICAL_CAST_HPP_INCLUDED

Definition at line 31 of file test_lexical_cast.cpp.

Function Documentation

lexical_cast()

template<typename To , typename From >

To lexical_cast ( From  value )

inline

Lexical cast converts one type to another.

Template Parameters

To	The type to convert to.
From	The type to convert from.

Parameters

value

The value to convert.

Returns

The converted value.

Exceptions

bad_lexical_cast

if the cast was unsuccessful.

Definition at line 86 of file lexical_cast.hpp.

Referenced by config::apply_diff(), config::clear_diff_track(), events::console_handler::do_control(), events::console_handler::do_controller(), gui2::dialogs::editor_generate_map::get_seed(), help::help_text_area::handle_jump_cfg(), gui2::dialogs::preferences_dialog::initialize_callbacks(), editor::editor_display::layout(), gui2::dialogs::help_browser::on_topic_select(), implementation::lexical_caster< long long, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< To, From, std::enable_if_t< std::is_integral_v< To > &&std::is_signed_v< To > &&!std::is_same_v< To, long long > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< To, From, std::enable_if_t< std::is_floating_point_v< To > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), config_attribute_value::string_visitor::operator()(), implementation::lexical_caster< unsigned long long, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< To, From, std::enable_if_t< std::is_unsigned_v< To > &&!std::is_same_v< To, unsigned long long > >, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), implementation::lexical_caster< bool, From, void, std::enable_if_t< std::is_same_v< From, const char * >||std::is_same_v< From, char * > > >::operator()(), commandline_options::parse_to_uint_string_string_tuples_(), commandline_options::parse_to_uint_string_tuples_(), progressive_pair< int >::progressive_pair(), and ai::config_value_translator< T >::value_to_cfg().

lexical_cast_default()

template<typename To , typename From >

To lexical_cast_default ( From  value, To  fallback = To()  )

inline

Lexical cast converts one type to another with a fallback.

Template Parameters

To	The type to convert to.
From	The type to convert from.

Parameters

value	The value to convert.
fallback	The fallback value to return if the cast fails.

Returns

The converted value.

Definition at line 103 of file lexical_cast.hpp.

Referenced by t_translation::string_to_builder_number_().