00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 1999-2004 The Apache Software Foundation. All rights 00006 * reserved. 00007 * 00008 * Redistribution and use in source and binary forms, with or without 00009 * modification, are permitted provided that the following conditions 00010 * are met: 00011 * 00012 * 1. Redistributions of source code must retain the above copyright 00013 * notice, this list of conditions and the following disclaimer. 00014 * 00015 * 2. Redistributions in binary form must reproduce the above copyright 00016 * notice, this list of conditions and the following disclaimer in 00017 * the documentation and/or other materials provided with the 00018 * distribution. 00019 * 00020 * 3. The end-user documentation included with the redistribution, 00021 * if any, must include the following acknowledgment: 00022 * "This product includes software developed by the 00023 * Apache Software Foundation (http://www.apache.org/)." 00024 * Alternately, this acknowledgment may appear in the software itself, 00025 * if and wherever such third-party acknowledgments normally appear. 00026 * 00027 * 4. The names "Xalan" and "Apache Software Foundation" must 00028 * not be used to endorse or promote products derived from this 00029 * software without prior written permission. For written 00030 * permission, please contact apache@apache.org. 00031 * 00032 * 5. Products derived from this software may not be called "Apache", 00033 * nor may "Apache" appear in their name, without prior written 00034 * permission of the Apache Software Foundation. 00035 * 00036 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 00037 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00038 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00039 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 00040 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00041 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00042 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 00043 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00044 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00045 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 00046 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00047 * SUCH DAMAGE. 00048 * ==================================================================== 00049 * 00050 * This software consists of voluntary contributions made by many 00051 * individuals on behalf of the Apache Software Foundation and was 00052 * originally based on software copyright (c) 1999, International 00053 * Business Machines, Inc., http://www.ibm.com. For more 00054 * information on the Apache Software Foundation, please see 00055 * <http://www.apache.org/>. 00056 * 00057 * @author <a href="mailto:david_n_bertoni@lotus.com">David N. Bertoni</a> 00058 */ 00059 #if !defined(XPATHCONSTRUCTIONCONTEXT_HEADER_GUARD_1357924680) 00060 #define XPATHCONSTRUCTIONCONTEXT_HEADER_GUARD_1357924680 00061 00062 00063 00064 // Base include file. Must be first. 00065 #include <xalanc/XPath/XPathDefinitions.hpp> 00066 00067 00068 00069 #include <xalanc/XalanDOM/XalanDOMString.hpp> 00070 00071 00072 00073 XALAN_CPP_NAMESPACE_BEGIN 00074 00075 00076 00077 // 00078 // An abstract class which provides support for constructing the internal 00079 // representation of a stylesheet. 00080 // 00081 class XALAN_XPATH_EXPORT XPathConstructionContext 00082 { 00083 public: 00084 00085 XPathConstructionContext(); 00086 00087 virtual 00088 ~XPathConstructionContext(); 00089 00090 00095 virtual void 00096 reset() = 0; 00097 00107 virtual const XalanDOMString& 00108 getPooledString(const XalanDOMString& theString) = 0; 00109 00120 virtual const XalanDOMString& 00121 getPooledString( 00122 const XalanDOMChar* theString, 00123 XalanDOMString::size_type theLength = XalanDOMString::npos) = 0; 00124 00130 virtual XalanDOMString& 00131 getCachedString() = 0; 00132 00140 virtual bool 00141 releaseCachedString(XalanDOMString& theString) = 0; 00142 00143 class GetAndReleaseCachedString 00144 { 00145 public: 00146 00147 GetAndReleaseCachedString(XPathConstructionContext& theConstructionContext) : 00148 m_constructionContext(&theConstructionContext), 00149 m_string(&theConstructionContext.getCachedString()) 00150 { 00151 } 00152 00153 // Note non-const copy semantics... 00154 GetAndReleaseCachedString(GetAndReleaseCachedString& theSource) : 00155 m_constructionContext(theSource.m_constructionContext), 00156 m_string(theSource.m_string) 00157 { 00158 theSource.m_string = 0; 00159 } 00160 00161 ~GetAndReleaseCachedString() 00162 { 00163 if (m_string != 0) 00164 { 00165 m_constructionContext->releaseCachedString(*m_string); 00166 } 00167 } 00168 00169 XalanDOMString& 00170 get() const 00171 { 00172 assert(m_string != 0); 00173 00174 return *m_string; 00175 } 00176 00177 XPathConstructionContext& 00178 getConstructionContext() const 00179 { 00180 return *m_constructionContext; 00181 } 00182 00183 private: 00184 00185 // Not implemented... 00186 GetAndReleaseCachedString& 00187 operator=(const GetAndReleaseCachedString&); 00188 00189 00190 // Data members... 00191 XPathConstructionContext* m_constructionContext; 00192 00193 XalanDOMString* m_string; 00194 }; 00195 00196 }; 00197 00198 00199 00200 XALAN_CPP_NAMESPACE_END 00201 00202 00203 00204 #endif // XPATHCONSTRUCTIONCONTEXT_HEADER_GUARD_1357924680
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