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Conflicts: src/ripple/app/TODO.md src/ripple/app/ledger/Ledger.h src/ripple/protocol/Protocol.h
99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_STREAMS_BASIC_ABSTRACT_OSTREAM_H_INCLUDED
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#define BEAST_STREAMS_BASIC_ABSTRACT_OSTREAM_H_INCLUDED
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#include <beast/streams/basic_scoped_ostream.h>
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#include <functional>
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#include <memory>
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#include <sstream>
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namespace beast {
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/** Abstraction for an output stream similar to std::basic_ostream. */
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template <
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class CharT,
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class Traits = std::char_traits <CharT>
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>
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class basic_abstract_ostream
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{
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public:
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using string_type = std::basic_string <CharT, Traits>;
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using scoped_stream_type = basic_scoped_ostream <CharT, Traits>;
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basic_abstract_ostream() = default;
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virtual
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~basic_abstract_ostream() = default;
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basic_abstract_ostream (basic_abstract_ostream const&) = default;
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basic_abstract_ostream& operator= (
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basic_abstract_ostream const&) = default;
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/** Returns `true` if the stream is active.
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Inactive streams do not produce output.
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*/
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/** @{ */
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virtual
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bool
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active() const
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{
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return true;
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}
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explicit
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operator bool() const
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{
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return active();
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}
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/** @} */
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/** Called to output each string. */
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virtual
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void
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write (string_type const& s) = 0;
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scoped_stream_type
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operator<< (std::ostream& manip (std::ostream&))
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{
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return scoped_stream_type (manip,
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[this](string_type const& s)
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{
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this->write (s);
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});
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}
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template <class T>
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scoped_stream_type
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operator<< (T const& t)
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{
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return scoped_stream_type (t,
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[this](string_type const& s)
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{
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this->write (s);
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});
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}
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};
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}
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#endif
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