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// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _<T>RPlex_h
#ifdef __GNUG__
#pragma interface
#endif
#define _<T>RPlex_h 1
#include "<T>.Plex.h"
// minimum number of chunks to index
#ifndef MIN_NCHUNKS
#define MIN_NCHUNKS 16
#endif
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;
inline void set_cache(const <T>IChunk* t) const; // logically,
// not physically const
public:
<T>RPlex(); // set low = 0;
// fence = 0;
// csize = default
<T>RPlex(int ch_size); // low = 0;
// fence = 0;
// csize = ch_size
<T>RPlex(int lo, // low = lo;
int ch_size); // fence=lo
// csize = ch_size
<T>RPlex(int lo, // low = lo
int hi, // fence = hi+1
const <T&> initval,// fill with initval,
int ch_size = 0); // csize= ch_size
// or fence-lo if 0
<T>RPlex(const <T>RPlex&);
inline ~<T>RPlex();
void operator= (const <T>RPlex&);
// virtuals
inline <T>& high_element ();
inline <T>& low_element ();
inline const <T>& high_element () const;
inline const <T>& low_element () const;
inline Pix first() const;
inline Pix last() const;
inline void prev(Pix& ptr) const;
inline void next(Pix& ptr) const;
int owns(Pix p) const;
inline <T>& operator () (Pix p);
inline const <T>& operator () (Pix p) const;
inline int low() const;
inline int high() const;
inline int valid(int idx) const;
inline void prev(int& idx) const;
inline void next(int& x) const;
inline <T>& operator [] (int index);
inline const <T>& operator [] (int index) const;
inline int Pix_to_index(Pix p) const;
inline Pix index_to_Pix(int idx) const;
inline int can_add_high() const;
inline int can_add_low() const;
inline int full() const;
int add_high(const <T&> elem);
int del_high ();
int add_low (const <T&> elem);
int del_low ();
void fill(const <T&> x);
void fill(const <T&> x, int from, int to);
void clear();
void reverse();
int reset_low(int newlow);
int OK () const;
};
inline void <T>RPlex::prev(int& idx) const
{
--idx;
}
inline void <T>RPlex::next(int& idx) const
{
++idx;
}
inline int <T>RPlex::full () const
{
return 0;
}
inline int <T>RPlex::can_add_high() const
{
return 1;
}
inline int <T>RPlex::can_add_low() const
{
return 1;
}
inline int <T>RPlex::valid (int idx) const
{
return idx >= lo && idx < fnc;
}
inline int <T>RPlex::low() const
{
return lo;
}
inline int <T>RPlex::high() const
{
return fnc - 1;
}
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
{
<T>* p = (<T>*)px;
if (!ch->actual_pointer(p)) cache(p);
return ch->index_of(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)
{
return *((<T>*)p);
}
inline <T>& <T>RPlex:: operator [] (int idx)
{
cache(idx); return *(ch->pointer_to(idx));
}
inline const <T>& <T>RPlex:: operator () (Pix p) const
{
return *((const <T>*)p);
}
inline const <T>& <T>RPlex:: operator [] (int idx) const
{
cache(idx); return *((const <T>*)(ch->pointer_to(idx)));
}
inline <T>RPlex::~<T>RPlex()
{
delete chunks;
}
#endif
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