libstdc++
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Public Types | |
typedef _CharT | char_type |
typedef _InIter | iter_type |
Public Member Functions | |
num_get (size_t __refs=0) | |
template<typename _ValueT > | |
_InIter | _M_extract_int (_InIter __beg, _InIter __end, ios_base &__io, ios_base::iostate &__err, _ValueT &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, bool &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, void *&__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long long &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, float &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, double &__v) const |
iter_type | get (iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long double &__v) const |
Static Public Attributes | |
static locale::id | id |
Protected Member Functions | |
virtual | ~num_get () |
iter_type | _M_extract_float (iter_type, iter_type, ios_base &, ios_base::iostate &, string &) const |
template<typename _ValueT > | |
iter_type | _M_extract_int (iter_type, iter_type, ios_base &, ios_base::iostate &, _ValueT &) const |
template<typename _CharT2 > | |
__gnu_cxx::__enable_if < __is_char< _CharT2 > ::__value, int >::__type | _M_find (const _CharT2 *, size_t __len, _CharT2 __c) const |
template<typename _CharT2 > | |
__gnu_cxx::__enable_if <!__is_char< _CharT2 > ::__value, int >::__type | _M_find (const _CharT2 *__zero, size_t __len, _CharT2 __c) const |
virtual iter_type | do_get (iter_type, iter_type, ios_base &, ios_base::iostate &, bool &) const |
virtual iter_type | do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const |
virtual iter_type | do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const |
virtual iter_type | do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const |
virtual iter_type | do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const |
virtual iter_type | do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const |
virtual iter_type | do_get (iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long long &__v) const |
virtual iter_type | do_get (iter_type, iter_type, ios_base &, ios_base::iostate &__err, float &) const |
virtual iter_type | do_get (iter_type, iter_type, ios_base &, ios_base::iostate &__err, double &) const |
virtual iter_type | do_get (iter_type, iter_type, ios_base &, ios_base::iostate &__err, long double &) const |
virtual iter_type | do_get (iter_type, iter_type, ios_base &, ios_base::iostate &__err, void *&) const |
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 1916 of file locale_facets.h.
typedef _CharT std::num_get< _CharT, _InIter >::char_type |
Public typedefs.
Definition at line 1922 of file locale_facets.h.
typedef _InIter std::num_get< _CharT, _InIter >::iter_type |
Public typedefs.
Definition at line 1923 of file locale_facets.h.
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inlineexplicit |
Constructor performs initialization.
This is the constructor provided by the standard.
refs | Passed to the base facet class. |
Definition at line 1937 of file locale_facets.h.
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inlineprotectedvirtual |
Destructor.
Definition at line 2106 of file locale_facets.h.
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protectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 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.
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inlineprotectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 2174 of file locale_facets.h.
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inlineprotectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 2179 of file locale_facets.h.
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inlineprotectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 2184 of file locale_facets.h.
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inlineprotectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 2189 of file locale_facets.h.
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inlineprotectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 2195 of file locale_facets.h.
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inlineprotectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 2200 of file locale_facets.h.
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protectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 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().
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protectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 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().
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protectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 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().
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protectedvirtual |
Numeric parsing.
Parses the input stream into the variable v. This function is a hook for derived classes to change the value returned.
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 750 of file locale_facets.tcc.
References std::ios_base::basefield, std::ios_base::flags(), and std::ios_base::hex.
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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 1963 of file locale_facets.h.
Referenced by std::basic_istream< _CharT, _Traits >::operator>>().
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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 1999 of file locale_facets.h.
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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 2004 of file locale_facets.h.
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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 2009 of file locale_facets.h.
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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 2014 of file locale_facets.h.
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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 2020 of file locale_facets.h.
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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 2025 of file locale_facets.h.
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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 2058 of file locale_facets.h.
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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 2063 of file locale_facets.h.
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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 2068 of file locale_facets.h.
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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 2100 of file locale_facets.h.
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static |
Numpunct facet id.
Definition at line 1927 of file locale_facets.h.