87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2011 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_STREAM_HPP
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#define __UTIL_STREAM_HPP
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#include <iostream>
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#include "types/bits.hpp"
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namespace util {
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namespace stream {
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//---------------------------------------------------------------------
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template <typename T>
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struct numeric
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{
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numeric (T _val): val (_val) { ; }
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T val;
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};
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template <typename T>
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std::ostream& operator<< (std::ostream &os, numeric<T> n)
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{
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static_assert (std::is_fundamental<T>::value,
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"numeric streamer is intended for chars");
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using integral_t = typename std::conditional<
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std::is_floating_point<T>::value,
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T,
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typename std::conditional<
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std::is_signed<T>::value,
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sized_type< intmax_t>::sint,
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sized_type<uintmax_t>::uint
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>::type
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>::type;
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return os << (integral_t)n.val;
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}
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//---------------------------------------------------------------------
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class null : public std::ostream {
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public:
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std::ostream & put (char c);
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std::ostream & write (const char *s, std::streamsize n);
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std::streampos tellp (void);
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std::ostream & seekp (std::streampos pos);
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std::ostream & seekp (std::streamoff off,
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std::ios_base::seekdir dir);
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std::ostream & flush (void);
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bool good (void) const;
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bool bad (void) const;
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bool eof (void) const;
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bool fail (void) const;
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};
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//---------------------------------------------------------------------
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struct bits {
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bits (uintmax_t value, unsigned count);
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uintmax_t value;
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unsigned count;
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};
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std::ostream& operator<< (std::ostream&, bits);
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}
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}
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#endif
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