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/* -*- c++ -*- */
/*
* Copyright (C) 2010 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef ANDROID_ASTL_IOS_POS_TYPES__
#define ANDROID_ASTL_IOS_POS_TYPES__
#include <cstddef> // ptrdiff_t
namespace std {
// Type use by fpos.
typedef long long streamoff;
// Signed type for I/O operation counts and buffer sizes.
typedef ptrdiff_t streamsize;
// In the regular STL fpos is a template which gets specialized for
// char and wchar and defines 2 types streampos and wstreampos. Since
// we don't support wchar, we just provide the final char compliant
// version. The methods to get/set the mbstate in fpos are not
// provided.
class fpos {
public:
fpos() : mOffs(0) { }
fpos(streamoff offs) : mOffs(offs) { }
// Convert to streamoff.
operator streamoff() const { return mOffs; }
// Not supported:
// void state(mbstate_t);
// mbstate_t state() const;
fpos& operator+=(streamoff offs);
fpos& operator-=(streamoff offs) {
return operator+=(-offs);
}
fpos operator+(streamoff offs) const;
fpos operator-(streamoff offs) const;
private:
streamoff mOffs;
};
inline bool
operator==(const fpos& lhs, const fpos& rhs)
{ return streamoff(lhs) == streamoff(rhs); }
inline bool
operator!=(const fpos& lhs, const fpos& rhs)
{ return streamoff(lhs) != streamoff(rhs); }
typedef fpos streampos;
} // namespace std
#endif