NamespaceScope.hpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 2001, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: NamespaceScope.hpp,v 1.5 2003/05/16 21:43:21 knoaman Exp $
- */
- #if !defined(NAMESPACESCOPE_HPP)
- #define NAMESPACESCOPE_HPP
- #include <xercesc/util/StringPool.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- //
- // NamespaceScope provides a data structure for mapping namespace prefixes
- // to their URI's. The mapping accurately reflects the scoping of namespaces
- // at a particular instant in time.
- //
- class VALIDATORS_EXPORT NamespaceScope : public XMemory
- {
- public :
- // -----------------------------------------------------------------------
- // Class specific data types
- //
- // These really should be private, but some of the compilers we have to
- // support are too dumb to deal with that.
- //
- // PrefMapElem
- // fURIId is the id of the URI from the validator's URI map. The
- // fPrefId is the id of the prefix from our own prefix pool. The
- // namespace stack consists of these elements.
- //
- // StackElem
- // The fMapCapacity is how large fMap has grown so far. fMapCount
- // is how many of them are valid right now.
- // -----------------------------------------------------------------------
- struct PrefMapElem : public XMemory
- {
- unsigned int fPrefId;
- unsigned int fURIId;
- };
- struct StackElem : public XMemory
- {
- PrefMapElem* fMap;
- unsigned int fMapCapacity;
- unsigned int fMapCount;
- };
- // -----------------------------------------------------------------------
- // Constructors and Destructor
- // -----------------------------------------------------------------------
- NamespaceScope(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
- ~NamespaceScope();
- // -----------------------------------------------------------------------
- // Stack access
- // -----------------------------------------------------------------------
- unsigned int increaseDepth();
- unsigned int decreaseDepth();
- // -----------------------------------------------------------------------
- // Prefix map methods
- // -----------------------------------------------------------------------
- void addPrefix(const XMLCh* const prefixToAdd,
- const unsigned int uriId);
- unsigned int getNamespaceForPrefix(const XMLCh* const prefixToMap) const;
- unsigned int getNamespaceForPrefix(const XMLCh* const prefixToMap,
- const int depthLevel) const;
- // -----------------------------------------------------------------------
- // Miscellaneous methods
- // -----------------------------------------------------------------------
- bool isEmpty() const;
- void reset(const unsigned int emptyId);
- private :
- // -----------------------------------------------------------------------
- // Unimplemented constructors and operators
- // -----------------------------------------------------------------------
- NamespaceScope(const NamespaceScope&);
- NamespaceScope& operator=(const NamespaceScope&);
- // -----------------------------------------------------------------------
- // Private helper methods
- // -----------------------------------------------------------------------
- void expandMap(StackElem* const toExpand);
- void expandStack();
- // -----------------------------------------------------------------------
- // Data members
- //
- // fEmptyNamespaceId
- // This is the special URI id for the "" namespace, which is magic
- // because of the xmlns="" operation.
- //
- // fPrefixPool
- // This is the prefix pool where prefixes are hashed and given unique
- // ids. These ids are used to track prefixes in the element stack.
- //
- // fStack
- // fStackCapacity
- // fStackTop
- // This the stack array. Its an array of pointers to StackElem
- // structures. The capacity is the current high water mark of the
- // stack. The top is the current top of stack (i.e. the part of it
- // being used.)
- // -----------------------------------------------------------------------
- unsigned int fEmptyNamespaceId;
- unsigned int fStackCapacity;
- unsigned int fStackTop;
- XMLStringPool fPrefixPool;
- StackElem** fStack;
- MemoryManager* fMemoryManager;
- };
- // ---------------------------------------------------------------------------
- // NamespaceScope: Stack access
- // ---------------------------------------------------------------------------
- inline unsigned int
- NamespaceScope::getNamespaceForPrefix(const XMLCh* const prefixToMap) const {
- return getNamespaceForPrefix(prefixToMap, (int)(fStackTop - 1));
- }
- // ---------------------------------------------------------------------------
- // NamespaceScope: Miscellaneous methods
- // ---------------------------------------------------------------------------
- inline bool NamespaceScope::isEmpty() const
- {
- return (fStackTop == 0);
- }
- XERCES_CPP_NAMESPACE_END
- #endif
- /**
- * End of file NameSpaceScope.hpp
- */