FilePos.h
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上传日期:2013-08-04
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- /*
- * Copyright (c) 2001,2002,2003 Mike Matsnev. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice immediately at the beginning of the file, without modification,
- * this list of conditions, and the following disclaimer.
- * 2. 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.
- * 3. Absolutely no warranty of function or purpose is made by the author
- * Mike Matsnev.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
- *
- * $Id: FilePos.h,v 1.3.2.1 2003/04/12 22:52:32 mike Exp $
- *
- */
- #ifndef FILEPOS_H
- #define FILEPOS_H
- struct FilePos {
- int para;
- int off;
- int docid;
- FilePos() : para(0), off(0), docid(0) { }
- FilePos(int p,int o,int did) : para(p), off(o), docid(did) { }
- FilePos(const FilePos& p) : para(p.para), off(p.off), docid(p.docid) { }
- FilePos& operator=(const FilePos& p) { para=p.para; off=p.off; docid=p.docid; return *this; }
- bool operator==(int p) const { return para==p && off==0 && docid==0; }
- bool operator!=(int p) const { return !operator==(p); }
- bool operator==(const FilePos& p) const { return para==p.para && off==p.off && docid==p.docid; }
- bool operator!=(const FilePos& p) const { return !operator==(p); }
- bool operator<(const FilePos& p) const {
- return docid<p.docid || (docid==p.docid &&
- (para<p.para || (para==p.para && off<p.off)));
- }
- bool operator>(const FilePos& p) const { return !operator<(p) && !operator==(p); }
- bool operator<=(const FilePos& p) const { return operator<(p) || operator==(p); }
- bool operator>=(const FilePos& p) const { return !operator<(p); }
- FilePos operator+(int i) { return FilePos(para,off+i,docid); }
- };
- #endif