// This may look like C code, but it is really -*- C++ -*-
Copyright (C) 1988 Free Software Foundation
written by Doug Lea (dl@rocky.oswego.edu)
based on code by Marc Shapiro (shapiro@sor.inria.fr)
This file is part of the GNU C++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version. This library is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
// minimum number of chunks to index
class <T>RPlex: public <T>Plex
int base; // base index of lowest chunk
int lch; // index of lowest used chunk
int fch; // 1 + index of highest used chunk
int maxch; // max chunks in array
<T>IChunk** chunks; // array of chunks
<T>IChunk* ch; // cached chunk
void make_initial_chunks(int up = 1);
void cache(int idx) const;
void cache(const <T>* p) const;
<T>* dopred(const <T>* p) const;
<T>* dosucc(const <T>* p) const;
void set_cache(const <T>IChunk* t) const; // logically,
<T>RPlex(); // set low = 0;
<T>RPlex(int ch_size); // low = 0;
<T>RPlex(int lo, // low = lo;
int ch_size); // fence=lo
<T>RPlex(int lo, // low = lo
const <T&> initval,// fill with initval,
int ch_size = 0); // csize= ch_size
<T>RPlex(const <T>RPlex&);
void operator= (const <T>RPlex&);
const <T>& high_element () const;
const <T>& low_element () const;
void prev(Pix& ptr) const;
void next(Pix& ptr) const;
<T>& operator () (Pix p);
const <T>& operator () (Pix p) const;
int valid(int idx) const;
void prev(int& idx) const;
<T>& operator [] (int index);
const <T>& operator [] (int index) const;
int Pix_to_index(Pix p) const;
Pix index_to_Pix(int idx) const;
int can_add_high() const;
int add_high(const <T&> elem);
int add_low (const <T&> elem);
void fill(const <T&> x, int from, int to);
int reset_low(int newlow);
inline void <T>RPlex::prev(int& idx) const
inline void <T>RPlex::next(int& idx) const
inline int <T>RPlex::full () const
inline int <T>RPlex::can_add_high() const
inline int <T>RPlex::can_add_low() const
inline int <T>RPlex::valid (int idx) const
return idx >= lo && idx < fnc;
inline int <T>RPlex::low() const
inline int <T>RPlex::high() const
inline void <T>RPlex::set_cache(const <T>IChunk* t) const
((<T>RPlex*)(this))->ch = (<T>IChunk*)t;
inline void <T>RPlex::cache(int idx) const
if (idx < lo || idx >= fnc) index_error();
set_cache(chunks[(idx - base) / csize]);
inline <T>& <T>RPlex::low_element ()
cache(lo); return *(ch->pointer_to(lo));
inline <T>& <T>RPlex::high_element ()
cache(fnc-1); return *(ch->pointer_to(fnc - 1));
inline const <T>& <T>RPlex::low_element () const
cache(lo); return *((const <T>*)(ch->pointer_to(lo)));
inline const <T>& <T>RPlex::high_element () const
cache(fnc-1); return *((const <T>*)(ch->pointer_to(fnc - 1)));
inline int <T>RPlex::Pix_to_index(Pix px) const
if (!ch->actual_pointer(p)) cache(p);
inline Pix <T>RPlex::index_to_Pix(int idx) const
if (!ch->actual_index(idx)) cache(idx);
return (Pix)(ch->pointer_to(idx));
inline Pix <T>RPlex::first() const
return Pix(hd-><T>IChunk::first_pointer());
inline Pix <T>RPlex::last() const
return Pix(tl()-><T>IChunk::last_pointer());
inline void <T>RPlex::prev(Pix& p) const
Pix q = Pix(ch-><T>IChunk::pred((<T>*)p));
p = (q == 0)? Pix(dopred((<T>*)p)) : q;
inline void <T>RPlex::next(Pix& p) const
Pix q = Pix(ch-><T>IChunk::succ((<T>*)p));
p = (q == 0)? Pix(dosucc((<T>*)p)) : q;
inline <T>& <T>RPlex:: operator () (Pix p)
inline <T>& <T>RPlex:: operator [] (int idx)
cache(idx); return *(ch->pointer_to(idx));
inline const <T>& <T>RPlex:: operator () (Pix p) const
inline const <T>& <T>RPlex:: operator [] (int idx) const
cache(idx); return *((const <T>*)(ch->pointer_to(idx)));
inline <T>RPlex::~<T>RPlex()