backends/inmemory/inmemory_positionlist.cc

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00001 /* inmemory_positionlist.cc
00002  *
00003  * Copyright 1999,2000,2001 BrightStation PLC
00004  * Copyright 2003 Olly Betts
00005  *
00006  * This program is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU General Public License as
00008  * published by the Free Software Foundation; either version 2 of the
00009  * License, or (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
00019  * USA
00020  */
00021 
00022 #include <config.h>
00023 
00024 #include "omassert.h"
00025 #include "omdebug.h"
00026 #include "inmemory_positionlist.h"
00027 
00028 InMemoryPositionList::InMemoryPositionList(const OmDocumentTerm::term_positions & positions_)
00029     : positions(positions_), mypos(positions.begin()),
00030       iterating_in_progress(false) 
00031 {
00032 }
00033 
00034 void
00035 InMemoryPositionList::set_data(const OmDocumentTerm::term_positions & positions_)
00036 {
00037     positions = positions_;
00038     mypos = positions.begin();
00039     iterating_in_progress = false;
00040 }
00041 
00042 Xapian::termcount
00043 InMemoryPositionList::get_size() const
00044 {
00045     return positions.size();
00046 }
00047 
00048 Xapian::termpos
00049 InMemoryPositionList::get_position() const
00050 {
00051     Assert(iterating_in_progress);
00052     Assert(!at_end());
00053     return *mypos;
00054 }
00055 
00056 void
00057 InMemoryPositionList::next()
00058 {
00059     if (iterating_in_progress) {
00060         Assert(!at_end());
00061         mypos++;
00062     } else {
00063         iterating_in_progress = true;
00064     }
00065 }
00066 
00067 void
00068 InMemoryPositionList::skip_to(Xapian::termpos termpos)
00069 {
00070     if (!iterating_in_progress) iterating_in_progress = true;
00071     while (!at_end() && *mypos < termpos) mypos++;
00072 }
00073 
00074 bool
00075 InMemoryPositionList::at_end() const
00076 {
00077     return(mypos == positions.end());
00078 }

Documentation for Xapian (version 1.0.10).
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