Public Types | |
typedef Traits | traits_type |
Easy access to dependant types. | |
typedef basic_streambuf< CharT, Traits > | streambuf_type |
typedef basic_istream< CharT, Traits > | __istream_type |
typedef __istream_type::ctype_type | ctype_type |
typedef Traits::int_type | int_type |
Public Member Functions | |
sentry (basic_istream< CharT, Traits > &__is, bool noskipws=false) | |
The constructor performs all the work. | |
operator bool () | |
Quick status checking. | |
Private Attributes | |
bool | M_ok |
Objects of this class are created before all of the standard extractors are run. It is responsible for "exception-safe prefix and suffix operations," although only prefix actions are currently required by the standard. Additional actions may be added by the implementation, and we list them in http://gcc.gnu.org/onlinedocs/libstdc++/17_intro/howto.html#5 under [27.6] notes.
Definition at line 577 of file istream.
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Easy access to dependant types.
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The constructor performs all the work.
The sentry's preparatory actions are:
If the stream state is still good, then the sentry state becomes true ("okay"). Definition at line 44 of file istream.tcc. References std::ios_base::eofbit, std::ios_base::flags(), std::basic_ios< CharT, Traits >::good(), std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), std::ios_base::skipws, ctype_base::space, and std::basic_ios< CharT, Traits >::tie(). |
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Quick status checking.
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