protected: void init( std::basic_streambuf<CharT,Traits>* sb ); |
Sets the associated stream buffer to sb and initializes the internal state.
The postconditions are as follows:
| Element | Value |
|---|---|
rdbuf() | sb |
tie() | null pointer |
rdstate() | goodbit if sb is not a null pointer, otherwise badbit |
exceptions() | goodbit |
flags() | skipws | dec |
width() | 0 |
precision() | 6 |
fill() | widen(' ') |
getloc() | a copy of the value returned by std::locale() |
This member function is protected: it is called by the constructors of the derived stream classes std::basic_istream and std::basic_ostream once the associated stream buffer is known. Until this function is called, every member function (including the destructor) of the default-constructed std::basic_ios invokes undefined behavior. Note that basic_ios is a virtual base class, and therefore its constructor is not called by the constructors of those directly derived classes, which is why two-stage initialization is necessary.
| sb | - | stream buffer to associate to |
| constructs the object (public member function) |
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