| 1 | /*
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| 2 | * The Apache Software License, Version 1.1
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| 3 | *
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| 4 | * Copyright (c) 1999-2001 The Apache Software Foundation. All rights
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| 5 | * reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | *
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | *
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer in
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| 16 | * the documentation and/or other materials provided with the
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| 17 | * distribution.
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| 18 | *
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| 19 | * 3. The end-user documentation included with the redistribution,
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| 20 | * if any, must include the following acknowledgment:
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| 21 | * "This product includes software developed by the
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| 22 | * Apache Software Foundation (http://www.apache.org/)."
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| 23 | * Alternately, this acknowledgment may appear in the software itself,
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| 24 | * if and wherever such third-party acknowledgments normally appear.
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| 25 | *
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| 26 | * 4. The names "Xerces" and "Apache Software Foundation" must
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| 27 | * not be used to endorse or promote products derived from this
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| 28 | * software without prior written permission. For written
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| 29 | * permission, please contact apache\@apache.org.
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| 30 | *
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| 31 | * 5. Products derived from this software may not be called "Apache",
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| 32 | * nor may "Apache" appear in their name, without prior written
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| 33 | * permission of the Apache Software Foundation.
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| 34 | *
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| 35 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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| 36 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 37 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 38 | * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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| 39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 41 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 42 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 43 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 44 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 45 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 46 | * SUCH DAMAGE.
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| 47 | * ====================================================================
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| 48 | *
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| 49 | * This software consists of voluntary contributions made by many
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| 50 | * individuals on behalf of the Apache Software Foundation, and was
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| 51 | * originally based on software copyright (c) 1999, International
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| 52 | * Business Machines, Inc., http://www.ibm.com . For more information
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| 53 | * on the Apache Software Foundation, please see
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| 54 | * <http://www.apache.org/>.
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| 55 | */
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| 56 |
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| 57 | /*
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| 58 | * $Log: CMLeaf.hpp,v $
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| 59 | * Revision 1.7 2004/01/29 11:51:21 cargilld
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| 60 | * Code cleanup changes to get rid of various compiler diagnostic messages.
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| 61 | *
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| 62 | * Revision 1.6 2003/05/30 16:11:45 gareth
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| 63 | * Fixes so we compile under VC7.1. Patch by Alberto Massari.
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| 64 | *
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| 65 | * Revision 1.5 2003/05/18 14:02:06 knoaman
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| 66 | * Memory manager implementation: pass per instance manager.
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| 67 | *
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| 68 | * Revision 1.4 2003/05/16 21:43:20 knoaman
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| 69 | * Memory manager implementation: Modify constructors to pass in the memory manager.
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| 70 | *
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| 71 | * Revision 1.3 2003/05/15 18:48:27 knoaman
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| 72 | * Partial implementation of the configurable memory manager.
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| 73 | *
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| 74 | * Revision 1.2 2002/11/04 14:54:58 tng
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| 75 | * C++ Namespace Support.
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| 76 | *
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| 77 | * Revision 1.1.1.1 2002/02/01 22:22:37 peiyongz
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| 78 | * sane_include
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| 79 | *
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| 80 | * Revision 1.6 2001/12/06 17:52:17 tng
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| 81 | * Performance Enhancement. The QName that was passed to the CMLeaf
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| 82 | * constructor was always being copied, even though the CMLeaf objects
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| 83 | * only existed during construction of a DFA. In most cases the original
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| 84 | * QName that was passed into the CMLeaf constructor continued to exist long
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| 85 | * after the CMLeaf was destroyed; in some cases the QName was constructed
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| 86 | * specifically to be passed to the CMLeaf constructor. Added a second CMLeaf constructor that indicated the QName passed in was to be adopted; otherwise the CMLeaf constructor just sets a reference to the QName passed in.
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| 87 | * By Henry Zongaro.
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| 88 | *
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| 89 | * Revision 1.5 2001/10/03 15:08:45 tng
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| 90 | * typo fix: remove the extra space which may confuse some compilers while constructing the qname.
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| 91 | *
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| 92 | * Revision 1.4 2001/05/11 13:27:16 tng
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| 93 | * Copyright update.
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| 94 | *
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| 95 | * Revision 1.3 2001/04/19 18:17:27 tng
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| 96 | * Schema: SchemaValidator update, and use QName in Content Model
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| 97 | *
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| 98 | * Revision 1.2 2001/02/16 14:58:57 tng
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| 99 | * Schema: Update Makefile, configure files, project files, and include path in
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| 100 | * certain cpp files because of the move of the common Content Model files. By Pei Yong Zhang.
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| 101 | *
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| 102 | * Revision 1.1 2001/02/16 14:17:29 tng
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| 103 | * Schema: Move the common Content Model files that are shared by DTD
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| 104 | * and schema from 'DTD' folder to 'common' folder. By Pei Yong Zhang.
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| 105 | *
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| 106 | * Revision 1.5 2000/03/28 19:43:25 roddey
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| 107 | * Fixes for signed/unsigned warnings. New work for two way transcoding
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| 108 | * stuff.
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| 109 | *
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| 110 | * Revision 1.4 2000/03/02 19:55:37 roddey
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| 111 | * This checkin includes many changes done while waiting for the
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| 112 | * 1.1.0 code to be finished. I can't list them all here, but a list is
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| 113 | * available elsewhere.
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| 114 | *
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| 115 | * Revision 1.3 2000/02/24 20:16:47 abagchi
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| 116 | * Swat for removing Log from API docs
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| 117 | *
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| 118 | * Revision 1.2 2000/02/09 21:42:36 abagchi
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| 119 | * Copyright swat
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| 120 | *
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| 121 | * Revision 1.1.1.1 1999/11/09 01:03:04 twl
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| 122 | * Initial checkin
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| 123 | *
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| 124 | * Revision 1.2 1999/11/08 20:45:36 rahul
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| 125 | * Swat for adding in Product name and CVS comment log variable.
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| 126 | *
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| 127 | */
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| 128 |
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| 129 | #if !defined(CMLEAF_HPP)
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| 130 | #define CMLEAF_HPP
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| 131 |
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| 132 | #include <xercesc/validators/common/CMNode.hpp>
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| 133 |
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| 134 |
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| 135 | XERCES_CPP_NAMESPACE_BEGIN
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| 136 |
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| 137 | //
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| 138 | // This class represents a leaf in the content spec node tree of an
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| 139 | // element's content model. It just has an element qname and a position value,
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| 140 | // the latter of which is used during the building of a DFA.
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| 141 | //
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| 142 | class CMLeaf : public CMNode
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| 143 | {
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| 144 | public :
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| 145 | // -----------------------------------------------------------------------
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| 146 | // Constructors
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| 147 | // -----------------------------------------------------------------------
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| 148 | CMLeaf
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| 149 | (
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| 150 | QName* const element
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| 151 | , const unsigned int position = (~0)
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| 152 | , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
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| 153 | );
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| 154 | CMLeaf
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| 155 | (
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| 156 | QName* const element
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| 157 | , const unsigned int position
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| 158 | , const bool adopt
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| 159 | , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
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| 160 | );
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| 161 | ~CMLeaf();
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| 162 |
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| 163 |
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| 164 | // -----------------------------------------------------------------------
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| 165 | // Getter methods
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| 166 | // -----------------------------------------------------------------------
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| 167 | QName* getElement();
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| 168 | const QName* getElement() const;
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| 169 | unsigned int getPosition() const;
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| 170 |
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| 171 |
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| 172 | // -----------------------------------------------------------------------
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| 173 | // Setter methods
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| 174 | // -----------------------------------------------------------------------
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| 175 | void setPosition(const unsigned int newPosition);
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| 176 |
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| 177 |
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| 178 | // -----------------------------------------------------------------------
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| 179 | // Implementation of public CMNode virtual interface
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| 180 | // -----------------------------------------------------------------------
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| 181 | bool isNullable() const;
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| 182 |
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| 183 |
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| 184 | protected :
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| 185 | // -----------------------------------------------------------------------
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| 186 | // Implementation of protected CMNode virtual interface
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| 187 | // -----------------------------------------------------------------------
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| 188 | void calcFirstPos(CMStateSet& toSet) const;
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| 189 | void calcLastPos(CMStateSet& toSet) const;
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| 190 |
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| 191 |
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| 192 | private :
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| 193 | // -----------------------------------------------------------------------
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| 194 | // Private data members
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| 195 | //
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| 196 | // fElement
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| 197 | // This is the element that this leaf represents.
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| 198 | //
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| 199 | // fPosition
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| 200 | // Part of the algorithm to convert a regex directly to a DFA
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| 201 | // numbers each leaf sequentially. If its -1, that means its an
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| 202 | // epsilon node. All others are non-epsilon positions.
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| 203 | //
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| 204 | // fAdopt
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| 205 | // This node is responsible for the storage of the fElement QName.
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| 206 | // -----------------------------------------------------------------------
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| 207 | QName* fElement;
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| 208 | unsigned int fPosition;
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| 209 | bool fAdopt;
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| 210 |
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| 211 | // -----------------------------------------------------------------------
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| 212 | // Unimplemented constructors and operators
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| 213 | // -----------------------------------------------------------------------
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| 214 | CMLeaf(const CMLeaf&);
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| 215 | CMLeaf& operator=(const CMLeaf&);
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| 216 | };
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| 217 |
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| 218 |
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| 219 | // -----------------------------------------------------------------------
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| 220 | // Constructors
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| 221 | // -----------------------------------------------------------------------
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| 222 | inline CMLeaf::CMLeaf( QName* const element
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| 223 | , const unsigned int position
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| 224 | , MemoryManager* const manager) :
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| 225 | CMNode(ContentSpecNode::Leaf, manager)
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| 226 | , fElement(0)
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| 227 | , fPosition(position)
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| 228 | , fAdopt(false)
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| 229 | {
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| 230 | if (!element)
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| 231 | {
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| 232 | fElement = new (fMemoryManager) QName
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| 233 | (
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| 234 | XMLUni::fgZeroLenString
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| 235 | , XMLUni::fgZeroLenString
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| 236 | , XMLElementDecl::fgInvalidElemId
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| 237 | , fMemoryManager
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| 238 | );
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| 239 | // We have to be responsible for this QName - override default fAdopt
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| 240 | fAdopt = true;
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| 241 | }
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| 242 | else
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| 243 | {
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| 244 | fElement = element;
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| 245 | }
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| 246 | }
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| 247 |
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| 248 | inline CMLeaf::CMLeaf( QName* const element
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| 249 | , const unsigned int position
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| 250 | , const bool adopt
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| 251 | , MemoryManager* const manager) :
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| 252 | CMNode(ContentSpecNode::Leaf, manager)
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| 253 | , fElement(0)
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| 254 | , fPosition(position)
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| 255 | , fAdopt(adopt)
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| 256 | {
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| 257 | if (!element)
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| 258 | {
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| 259 | fElement = new (fMemoryManager) QName
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| 260 | (
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| 261 | XMLUni::fgZeroLenString
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| 262 | , XMLUni::fgZeroLenString
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| 263 | , XMLElementDecl::fgInvalidElemId
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| 264 | , fMemoryManager
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| 265 | );
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| 266 | // We have to be responsible for this QName - override adopt parameter
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| 267 | fAdopt = true;
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| 268 | }
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| 269 | else
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| 270 | {
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| 271 | fElement = element;
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| 272 | }
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| 273 | }
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| 274 |
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| 275 | inline CMLeaf::~CMLeaf()
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| 276 | {
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| 277 | if (fAdopt)
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| 278 | delete fElement;
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| 279 | }
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| 280 |
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| 281 |
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| 282 | // ---------------------------------------------------------------------------
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| 283 | // Getter methods
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| 284 | // ---------------------------------------------------------------------------
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| 285 | inline QName* CMLeaf::getElement()
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| 286 | {
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| 287 | return fElement;
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| 288 | }
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| 289 |
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| 290 | inline const QName* CMLeaf::getElement() const
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| 291 | {
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| 292 | return fElement;
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| 293 | }
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| 294 |
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| 295 | inline unsigned int CMLeaf::getPosition() const
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| 296 | {
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| 297 | return fPosition;
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| 298 | }
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| 299 |
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| 300 |
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| 301 | // ---------------------------------------------------------------------------
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| 302 | // Setter methods
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| 303 | // ---------------------------------------------------------------------------
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| 304 | inline void CMLeaf::setPosition(const unsigned int newPosition)
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| 305 | {
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| 306 | fPosition = newPosition;
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| 307 | }
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| 308 |
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| 309 |
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| 310 | // ---------------------------------------------------------------------------
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| 311 | // Implementation of public CMNode virtual interface
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| 312 | // ---------------------------------------------------------------------------
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| 313 | inline bool CMLeaf::isNullable() const
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| 314 | {
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| 315 | // Leaf nodes are never nullable unless its an epsilon node
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| 316 | return (fPosition == -1);
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| 317 | }
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| 318 |
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| 319 |
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| 320 | // ---------------------------------------------------------------------------
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| 321 | // Implementation of protected CMNode virtual interface
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| 322 | // ---------------------------------------------------------------------------
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| 323 | inline void CMLeaf::calcFirstPos(CMStateSet& toSet) const
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| 324 | {
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| 325 | // If we are an epsilon node, then the first pos is an empty set
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| 326 | if (fPosition == -1)
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| 327 | {
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| 328 | toSet.zeroBits();
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| 329 | return;
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| 330 | }
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| 331 |
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| 332 | // Otherwise, its just the one bit of our position
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| 333 | toSet.setBit(fPosition);
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| 334 | }
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| 335 |
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| 336 | inline void CMLeaf::calcLastPos(CMStateSet& toSet) const
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| 337 | {
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| 338 | // If we are an epsilon node, then the last pos is an empty set
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| 339 | if (fPosition == -1)
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| 340 | {
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| 341 | toSet.zeroBits();
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| 342 | return;
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| 343 | }
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| 344 |
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| 345 | // Otherwise, its just the one bit of our position
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| 346 | toSet.setBit(fPosition);
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| 347 | }
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| 348 |
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| 349 | XERCES_CPP_NAMESPACE_END
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| 350 |
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| 351 | #endif
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