2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
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8 * Lesser General Public License as published by the Free Software
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15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
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20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /* $XConsortium: PathQualifier.h /main/5 1996/08/21 15:50:33 drk $ */
24 #ifndef _PathQualifier_h
25 #define _PathQualifier_h
30 #include "dti_cc/CC_String.h"
35 // PathEXPR = PathTERM | PathTERM log PathTERM
37 // PathTERM = position | attribute-selector
39 // position = posn eqop number
40 // attribute-selector = attribute eqop string
48 enum PQEqOp { PQEqual, PQNotEqual };
49 enum PQBoolean { PQFalse, PQTrue };
50 enum PQLogOp { PQand, PQor };
56 virtual PQBoolean evaluate(const Element &) = 0;
59 class PQNot : public PQExpr
64 virtual PQBoolean evaluate(const Element &);
70 class PQPosition : public PQExpr
73 PQPosition(PQEqOp optype, int position);
74 virtual PQBoolean evaluate(const Element &);
81 class PQSibling: public PQExpr
84 PQSibling(PQEqOp optype, int sibling);
85 virtual PQBoolean evaluate(const Element &);
92 class PQAttributeSelector : public PQExpr
95 PQAttributeSelector(const Symbol &attrname, PQEqOp, const CC_String &string);
96 ~PQAttributeSelector();
97 virtual PQBoolean evaluate(const Element &);
104 class PQLogExpr : public PQExpr
108 PQLogExpr(PQExpr *left, PQLogOp op, PQExpr *right);
111 virtual PQBoolean evaluate(const Element &);
123 #endif /* _PathQualifier_h */
124 /* DO NOT ADD ANY LINES AFTER THIS #endif */