GEOS 3.4.2

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ShortCircuitedGeometryVisitor.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2001-2002 Vivid Solutions Inc.
7 * Copyright (C) 2006 Refractions Research Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************/
15
16 #ifndef GEOS_GEOM_UTIL_SHORTCIRCUITEDGEOMETRYVISITOR_H
17 #define GEOS_GEOM_UTIL_SHORTCIRCUITEDGEOMETRYVISITOR_H
18
19 #include <geos/export.h>
20
21 // Forward declarations
22 namespace geos {
23 namespace geom {
24 class Geometry;
25 }
26 }
27
28
29 namespace geos {
30 namespace geom { // geos.geom
31 namespace util { // geos.geom.util
32
39 class GEOS_DLL ShortCircuitedGeometryVisitor
40 {
41
42 private:
43
44 bool done;
45
46 protected:
47
48 virtual void visit(const Geometry &element)=0;
49 virtual bool isDone()=0;
50
51 public:
52
53 ShortCircuitedGeometryVisitor()
54 :
55 done(false)
56 {}
57
58 void applyTo(const Geometry &geom);
59
60 virtual ~ShortCircuitedGeometryVisitor() {}
61
62 };
63
64 } // namespace geos.geom.util
65 } // namespace geos.geom
66 } // namespace geos
67
68 #endif