libstdc++
|
Primary class template num_get.
This facet encapsulates the code to parse and return a number from a string. It is used by the istream numeric extraction operators.
The num_get template uses protected virtual functions to provide the actual results. The public accessors forward the call to the virtual functions. These virtual functions are hooks for developers to implement the behavior they require from the num_get facet.
Definition at line 1917 of file locale_facets.h.
typedef _CharT std::num_get< _CharT, _InIter >::char_type |
Public typedefs.
Definition at line 1923 of file locale_facets.h.
typedef _InIter std::num_get< _CharT, _InIter >::iter_type |
Public typedefs.
Definition at line 1924 of file locale_facets.h.
std::num_get< _CharT, _InIter >::num_get | ( | size_t | __refs = 0 | ) | [inline, explicit] |
Constructor performs initialization.
This is the constructor provided by the standard.
__refs | Passed to the base facet class. |
Definition at line 1938 of file locale_facets.h.
virtual std::num_get< _CharT, _InIter >::~num_get | ( | ) | [inline, protected, virtual] |
Destructor.
Definition at line 2107 of file locale_facets.h.
_InIter std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
bool & | __v | ||
) | const [protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 592 of file locale_facets.tcc.
References std::ios_base::_M_getloc(), std::ios_base::boolalpha, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::flags(), and std::ios_base::goodbit.
virtual iter_type std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
long & | __v | ||
) | const [inline, protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2175 of file locale_facets.h.
virtual iter_type std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned short & | __v | ||
) | const [inline, protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2180 of file locale_facets.h.
virtual iter_type std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned int & | __v | ||
) | const [inline, protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2185 of file locale_facets.h.
virtual iter_type std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned long & | __v | ||
) | const [inline, protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2190 of file locale_facets.h.
virtual iter_type std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
long long & | __v | ||
) | const [inline, protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2196 of file locale_facets.h.
virtual iter_type std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned long long & | __v | ||
) | const [inline, protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2201 of file locale_facets.h.
_InIter std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
float & | __v | ||
) | const [protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 688 of file locale_facets.tcc.
References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::ios_base::eofbit, and std::basic_string< _CharT, _Traits, _Alloc >::reserve().
_InIter std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
double & | __v | ||
) | const [protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 703 of file locale_facets.tcc.
References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::ios_base::eofbit, and std::basic_string< _CharT, _Traits, _Alloc >::reserve().
_InIter std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
long double & | __v | ||
) | const [protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 735 of file locale_facets.tcc.
References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::ios_base::eofbit, and std::basic_string< _CharT, _Traits, _Alloc >::reserve().
_InIter std::num_get< _CharT, _InIter >::do_get | ( | iter_type | __beg, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
void *& | __v | ||
) | const [protected, virtual] |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
__beg | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 750 of file locale_facets.tcc.
References std::ios_base::basefield, std::ios_base::flags(), and std::ios_base::hex.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
bool & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the bool v. It does so by calling num_get::do_get().
If ios_base::boolalpha is set, attempts to read ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets v to true or false if successful. Sets err to ios_base::failbit if reading the string fails. Sets err to ios_base::eofbit if the stream is emptied.
If ios_base::boolalpha is not set, proceeds as with reading a long, except if the value is 1, sets v to true, if the value is 0, sets v to false, and otherwise set err to ios_base::failbit.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 1964 of file locale_facets.h.
Referenced by std::basic_istream< _CharT, _Traits >::operator>>().
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
long & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
Parsing is affected by the flag settings in io.
The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2000 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned short & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
Parsing is affected by the flag settings in io.
The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2005 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned int & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
Parsing is affected by the flag settings in io.
The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2010 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned long & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
Parsing is affected by the flag settings in io.
The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2015 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
long long & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
Parsing is affected by the flag settings in io.
The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2021 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
unsigned long long & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
Parsing is affected by the flag settings in io.
The basic parse is affected by the value of io.flags() & ios_base::basefield. If equal to ios_base::oct, parses like the scanf o specifier. Else if equal to ios_base::hex, parses like X specifier. Else if basefield equal to 0, parses like the i specifier. Otherwise, parses like d for signed and u for unsigned types. The matching type length modifier is also used.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2026 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
float & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
The input characters are parsed like the scanf g specifier. The matching type length modifier is also used.
The decimal point character used is numpunct::decimal_point(). Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2059 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
double & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
The input characters are parsed like the scanf g specifier. The matching type length modifier is also used.
The decimal point character used is numpunct::decimal_point(). Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2064 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
long double & | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the integral variable v. It does so by calling num_get::do_get().
The input characters are parsed like the scanf g specifier. The matching type length modifier is also used.
The decimal point character used is numpunct::decimal_point(). Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2069 of file locale_facets.h.
iter_type std::num_get< _CharT, _InIter >::get | ( | iter_type | __in, |
iter_type | __end, | ||
ios_base & | __io, | ||
ios_base::iostate & | __err, | ||
void *& | __v | ||
) | const [inline] |
Numeric parsing.
Parses the input stream into the pointer variable v. It does so by calling num_get::do_get().
The input characters are parsed like the scanf p specifier.
Digit grouping is interpreted according to numpunct::grouping() and numpunct::thousands_sep(). If the pattern of digit groups isn't consistent, sets err to ios_base::failbit.
Note that the digit grouping effect for pointers is a bit ambiguous in the standard and shouldn't be relied on. See DR 344.
If parsing the string yields a valid value for v, v is set. Otherwise, sets err to ios_base::failbit and leaves v unaltered. Sets err to ios_base::eofbit if the stream is emptied.
__in | Start of input stream. |
__end | End of input stream. |
__io | Source of locale and flags. |
__err | Error flags to set. |
__v | Value to format and insert. |
Definition at line 2101 of file locale_facets.h.
locale::id std::num_get< _CharT, _InIter >::id [static] |
Numpunct facet id.
Definition at line 1928 of file locale_facets.h.