词法分析

开发平台：
Visual C++

XercesElementWildcard.cpp：源码内容
							/*
 * 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:
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 *    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
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 * 5. Products derived from this software may not be called "Apache",
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 *
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 * individuals on behalf of the Apache Software Foundation, and was
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/*
 * $Log: XercesElementWildcard.cpp,v $
 * Revision 1.2  2002/11/04 14:49:42  tng
 * C++ Namespace Support.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:50  peiyongz
 * sane_include
 *
 * Revision 1.3  2001/11/21 14:30:13  knoaman
 * Fix for UPA checking.
 *
 * Revision 1.2  2001/08/22 16:58:27  tng
 * typo: the type should be t1/t2, not w1/w2.
 *
 * Revision 1.1  2001/08/21 15:58:42  tng
 * Schema: New files XercesElementWildCard.
 *
 */
// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/validators/schema/XercesElementWildcard.hpp>
XERCES_CPP_NAMESPACE_BEGIN
// ---------------------------------------------------------------------------
//  Local methods
// ---------------------------------------------------------------------------
/**
 * XercesElementWildcard is used to check whether two element declarations conflict
 */
/**
 * Check whether two element declarations conflict
 */
bool XercesElementWildcard::conflict(SchemaGrammar* const pGrammar,
                                     ContentSpecNode::NodeTypes   type1,
                                     QName*                       q1,
                                     ContentSpecNode::NodeTypes   type2,
                                     QName*                       q2,
                                     SubstitutionGroupComparator* comparator)
{
    if (type1 == ContentSpecNode::Leaf &&
        type2 == ContentSpecNode::Leaf) {
        if (comparator->isEquivalentTo(q1, q2) || comparator->isEquivalentTo(q2, q1))
            return true;
    }
    else if (type1 == ContentSpecNode::Leaf) {
        return uriInWildcard(pGrammar, q1, q2->getURI(), type2, comparator);
    }
    else if (type2 == ContentSpecNode::Leaf) {
        return uriInWildcard(pGrammar, q2, q1->getURI(), type1, comparator);
    }
    else {
        return wildcardIntersect(type1, q1->getURI(), type2, q2->getURI());
    }
    return false;
}
bool XercesElementWildcard::uriInWildcard(SchemaGrammar* const         pGrammar,
                                          QName*                       qname,
                                          unsigned int                 wildcard,
                                          ContentSpecNode::NodeTypes   wtype,
                                          SubstitutionGroupComparator* comparator)
{
    if ((wtype & 0x0f)== ContentSpecNode::Any) {
        return true;
    }
    else if ((wtype & 0x0f)== ContentSpecNode::Any_NS) {
        // substitution of "uri" satisfies "wtype:wildcard"
        return comparator->isAllowedByWildcard(pGrammar, qname, wildcard, false);
    }
    else if ((wtype & 0x0f)== ContentSpecNode::Any_Other) {
        // substitution of "uri" satisfies "wtype:wildcard"
        return comparator->isAllowedByWildcard(pGrammar, qname, wildcard, true);
    }
    return false;
}
bool XercesElementWildcard::wildcardIntersect(ContentSpecNode::NodeTypes t1,
                                              unsigned int               w1,
                                              ContentSpecNode::NodeTypes t2,
                                              unsigned int               w2)
{
    if (((t1 & 0x0f) == ContentSpecNode::Any) ||
        ((t2 & 0x0f) == ContentSpecNode::Any)) {
        // if either one is "##any", then intersects
        return true;
    }
    else if (((t1 & 0x0f) == ContentSpecNode::Any_NS) &&
             ((t2 & 0x0f) == ContentSpecNode::Any_NS) &&
             (w1 == w2)) {
        // if both are "some_namespace" and equal, then intersects
        return true;
    }
    else if (((t1 & 0x0f) == ContentSpecNode::Any_Other) &&
             ((t2 & 0x0f) == ContentSpecNode::Any_Other)) {
        // if both are "##other", and equal, then intersects
        return true;
    }
    else if (((((t1 & 0x0f) == ContentSpecNode::Any_NS) &&
               ((t2 & 0x0f) == ContentSpecNode::Any_Other)) ||
              (((t1 & 0x0f) == ContentSpecNode::Any_Other) &&
               ((t2 & 0x0f) == ContentSpecNode::Any_NS))) &&
             (w1 != w2)) {
        return true;
    }
    return false;
}
XERCES_CPP_NAMESPACE_END

						