152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: XMLPScanToken.hpp 527149 2007-04-10 14:56:39Z amassari $
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*/
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#if !defined(XERCESC_INCLUDE_GUARD_XMLPSCANTOKEN_HPP)
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#define XERCESC_INCLUDE_GUARD_XMLPSCANTOKEN_HPP
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#include <xercesc/util/XMemory.hpp>
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XERCES_CPP_NAMESPACE_BEGIN
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class XMLScanner;
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/**
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* This simple class is used as a sanity check when the scanner is used to
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* do progressive parsing. It insures that things are not done out of
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* sequence and that sequences of scan calls are made correctly to the
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* right scanner instances.
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*
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* To client code, it is just a magic cookie which is obtained when a
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* progressive parse is begun, and which is passed back in on each subsequent
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* call of the progressive parse.
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*/
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class XMLPARSER_EXPORT XMLPScanToken : public XMemory
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{
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public :
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// -----------------------------------------------------------------------
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// Constructors and Destructor
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// -----------------------------------------------------------------------
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/** @name Constructor */
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//@{
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XMLPScanToken();
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XMLPScanToken(const XMLPScanToken& toCopy);
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//@}
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/** @name Destructor */
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//@{
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~XMLPScanToken();
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//@}
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// -----------------------------------------------------------------------
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// Public operators
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// -----------------------------------------------------------------------
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XMLPScanToken& operator=(const XMLPScanToken& toCopy);
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protected :
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// -----------------------------------------------------------------------
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// XMLScanner is our friend, can you say friend? Sure...
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// -----------------------------------------------------------------------
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friend class XMLScanner;
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// -----------------------------------------------------------------------
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// Hidden methods for use by XMLScanner
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// -----------------------------------------------------------------------
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void set
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(
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const XMLUInt32 scannerId
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, const XMLUInt32 sequenceId
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);
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private :
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// -----------------------------------------------------------------------
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// Private data members
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//
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// fScannerId
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// This field is set to the id of the scanner, to catch problems
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// where a token is gotten from one scanner and passed to another.
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// Each scanner is assigned an incrementing id.
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//
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// fSequenceId
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// In order to avoid problems such as calling scanNext() without
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// a call to scanFirst() and such, this value is set when scanFirst()
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// is called and matches this token to the current sequence id of
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// the scanner.
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// -----------------------------------------------------------------------
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XMLUInt32 fScannerId;
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XMLUInt32 fSequenceId;
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};
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// ---------------------------------------------------------------------------
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// XMLPScanToken: Constructors and Operators
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// ---------------------------------------------------------------------------
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inline XMLPScanToken::XMLPScanToken() :
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fScannerId(0)
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, fSequenceId(0)
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{
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}
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inline XMLPScanToken::XMLPScanToken(const XMLPScanToken& toCopy) :
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XMemory(toCopy)
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, fScannerId(toCopy.fScannerId)
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, fSequenceId(toCopy.fSequenceId)
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{
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}
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inline XMLPScanToken::~XMLPScanToken()
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{
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}
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// ---------------------------------------------------------------------------
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// XMLPScanToken: Public operators
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// ---------------------------------------------------------------------------
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inline XMLPScanToken& XMLPScanToken::operator=(const XMLPScanToken& toCopy)
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{
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if (this == &toCopy)
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return *this;
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fScannerId = toCopy.fScannerId;
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fSequenceId = toCopy.fSequenceId;
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return *this;
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}
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// ---------------------------------------------------------------------------
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// XMLPScanToken: Hidden methods
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// ---------------------------------------------------------------------------
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inline void XMLPScanToken::set( const XMLUInt32 scannerId
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, const XMLUInt32 sequenceId)
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{
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fScannerId = scannerId;
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fSequenceId = sequenceId;
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}
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XERCES_CPP_NAMESPACE_END
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#endif
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