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77 lines
1.2 KiB
77 lines
1.2 KiB
3 years ago
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// BooleanLexer.cc
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//
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// BooleanLexer: lexical analyzer for boolean query expressions.
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// defines terminal symbols
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// "word", and, or, not, near, (, ), /
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//
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// Part of the ht://Dig package <http://www.htdig.org/>
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// Copyright (c) 1995-2004 The ht://Dig Group
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// For copyright details, see the file COPYING in your distribution
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// or the GNU Library General Public License (LGPL) version 2 or later
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// <http://www.gnu.org/copyleft/lgpl.html>
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//
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// $Id: BooleanLexer.cc,v 1.4 2004/05/28 13:15:24 lha Exp $
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//
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#include "BooleanLexer.h"
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bool
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BooleanLexer::IsOr() const
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{
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return current == String("or");
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}
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bool
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BooleanLexer::IsAnd() const
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{
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return current == String("and");
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}
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bool
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BooleanLexer::IsNot() const
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{
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return current == String("not");
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}
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bool
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BooleanLexer::IsNear() const
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{
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return current == String("near");
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}
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bool
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BooleanLexer::IsSlash() const
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{
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return current == String("/");
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}
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bool
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BooleanLexer::IsLeftParen() const
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{
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return current == String("(");
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}
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bool
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BooleanLexer::IsRightParen() const
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{
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return current == String(")");
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}
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bool
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BooleanLexer::IsWord() const
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{
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return !IsEnd()
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&& !IsQuote()
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&& !IsRightParen()
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&& !IsLeftParen()
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&& !IsSlash()
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&& !IsAnd()
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&& !IsOr()
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&& !IsAnd()
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&& !IsNot()
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&& !IsNear();
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}
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