cppdraft_translate/cppdraft/spanbuf/cons.md

[spanbuf.cons]

31 Input/output library [input.output]

31.9 Span-based streams [span.streams]

31.9.3 Class template basic_spanbuf [spanbuf]

31.9.3.2 Constructors [spanbuf.cons]

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explicit basic_spanbuf(std::span<charT> s, ios_base::openmode which = ios_base::in | ios_base::out);

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Effects: Initializes the base class with basic_streambuf() ([streambuf.cons]), and mode with which.

Initializes the internal pointers as if calling span(s).

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basic_spanbuf(basic_spanbuf&& rhs);

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Effects: Initializes the base class with std​::​move(rhs) andmode with std​::​move(rhs.mode) andbuf with std​::​move(rhs.buf).

The sequence pointers in *this (eback(), gptr(), egptr(),pbase(), pptr(), epptr()) obtain the values which rhs had.

It isimplementation-defined whether rhs.buf.​empty() returns true after the move.

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Postconditions: Let rhs_p refer to the state of rhs just prior to this construction.

• (3.1)

span().data() == rhs_p.span().data()

• (3.2)

span().size() == rhs_p.span().size()

• (3.3)

eback() == rhs_p.eback()

• (3.4)

gptr() == rhs_p.gptr()

• (3.5)

egptr() == rhs_p.egptr()

• (3.6)

pbase() == rhs_p.pbase()

• (3.7)

pptr() == rhs_p.pptr()

• (3.8)

epptr() == rhs_p.epptr()

• (3.9)

getloc() == rhs_p.getloc()