xapian-core  1.4.22
expanddecider.cc
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1 
4 /* Copyright (C) 2007,2016 Olly Betts
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of the
9  * License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <config.h>
22 
23 #include <xapian/expanddecider.h>
24 #include "stringutils.h"
25 
26 using namespace std;
27 
28 namespace Xapian {
29 
30 ExpandDecider::~ExpandDecider() { }
31 
32 bool
33 ExpandDeciderAnd::operator()(const string &term) const
34 {
35  return (*first)(term) && (*second)(term);
36 }
37 
38 bool
39 ExpandDeciderFilterTerms::operator()(const string &term) const
40 {
41  /* Some older compilers (such as Sun's CC) return an iterator from find()
42  * and a const_iterator from end() in this situation, and then can't
43  * compare the two! We workaround this problem by explicitly assigning the
44  * result of find() to a const_iterator. */
45  set<string>::const_iterator i = rejects.find(term);
46  return i == rejects.end();
47 }
48 
49 bool
50 ExpandDeciderFilterPrefix::operator()(const string &term) const
51 {
52  return startswith(term, prefix);
53 }
54 
55 }
The Xapian namespace contains public interfaces for the Xapian library.
Definition: compactor.cc:80
STL namespace.
Allow rejection of terms during ESet generation.
bool startswith(const std::string &s, char pfx)
Definition: stringutils.h:46
Various handy helpers which std::string really should provide.