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ircd::buffer: Add remains() to window_buffer interface.

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This commit is contained in:
Jason Volk 2019-04-08 20:42:37 -07:00
parent e9a6f2ec92
commit ca7d401144
1 changed files with 23 additions and 1 deletions
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24
include/ircd/buffer/window_buffer.h
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@ -32,10 +32,13 @@ struct ircd::buffer::window_buffer
size_t remaining() const;
size_t consumed() const;
const_buffer remains() const;
const_buffer completed() const;
explicit operator const_buffer() const;
mutable_buffer remains();
mutable_buffer completed();
explicit operator const_buffer() const;
const_buffer operator()(const closure &);
const_buffer operator()(const closure_cbuf &);
const_buffer rewind(const size_t &n = 1);
@ -112,6 +115,15 @@ ircd::buffer::window_buffer::completed()
return { base.begin(), base.begin() + consumed() };
}
/// View the remaining portion of the stream
inline ircd::buffer::mutable_buffer
ircd::buffer::window_buffer::remains()
{
assert(base.begin() <= begin());
assert(base.begin() + consumed() <= base.end());
return { base.begin() + consumed(), base.end() };
}
/// Convenience conversion to get the completed portion
inline ircd::buffer::window_buffer::operator
const_buffer()
@ -130,6 +142,16 @@ const
return { base.begin(), base.begin() + consumed() };
}
/// View the remaining portion of the stream
inline ircd::buffer::const_buffer
ircd::buffer::window_buffer::remains()
const
{
assert(base.begin() <= begin());
assert(base.begin() + consumed() <= base.end());
return { base.begin() + consumed(), base.end() };
}
/// Bytes used by writes to the stream buffer
inline size_t
ircd::buffer::window_buffer::consumed()