xercesxpath.hpp

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        EXPRTOKEN_FUNCTION_NAME               = 32,
        EXPRTOKEN_AXISNAME_ANCESTOR           = 33,
        EXPRTOKEN_AXISNAME_ANCESTOR_OR_SELF   = 34,
        EXPRTOKEN_AXISNAME_ATTRIBUTE          = 35,
        EXPRTOKEN_AXISNAME_CHILD              = 36,
        EXPRTOKEN_AXISNAME_DESCENDANT         = 37,
        EXPRTOKEN_AXISNAME_DESCENDANT_OR_SELF = 38,
        EXPRTOKEN_AXISNAME_FOLLOWING          = 39,
        EXPRTOKEN_AXISNAME_FOLLOWING_SIBLING  = 40,
        EXPRTOKEN_AXISNAME_NAMESPACE          = 41,
        EXPRTOKEN_AXISNAME_PARENT             = 42,
        EXPRTOKEN_AXISNAME_PRECEDING          = 43,
        EXPRTOKEN_AXISNAME_PRECEDING_SIBLING  = 44,
        EXPRTOKEN_AXISNAME_SELF               = 45,
        EXPRTOKEN_LITERAL                     = 46,
        EXPRTOKEN_NUMBER                      = 47,
        EXPRTOKEN_VARIABLE_REFERENCE          = 48
    };

    // -----------------------------------------------------------------------
    //  Constructors/Destructor
    // -----------------------------------------------------------------------
    XercesXPath(const XMLCh* const xpathExpr,
                XMLStringPool* const stringPool,
                NamespaceScope* const scopeContext,
                const unsigned int emptyNamespaceId,
                const bool isSelector = false);
	~XercesXPath();

    // -----------------------------------------------------------------------
    //  Operators
    // -----------------------------------------------------------------------
    bool operator== (const XercesXPath& other) const;
    bool operator!= (const XercesXPath& other) const;

    // -----------------------------------------------------------------------
    //  Constructors/Destructor
    // -----------------------------------------------------------------------
    RefVectorOf<XercesLocationPath>* getLocationPaths() const;

private:
    // -----------------------------------------------------------------------
    //  Unimplemented contstructors and operators
    // -----------------------------------------------------------------------
    XercesXPath(const XercesXPath& other);
    XercesXPath& operator= (const XercesXPath& other);

    // -----------------------------------------------------------------------
    //  Helper methods
    // -----------------------------------------------------------------------
    void cleanUp();
    void checkForSelectedAttributes();
    void parseExpression(XMLStringPool* const stringPool,
                         NamespaceScope* const scopeContext);

    // -----------------------------------------------------------------------
    //  Data members
    // -----------------------------------------------------------------------
    unsigned int                     fEmptyNamespaceId;
    XMLCh*                           fExpression;
    RefVectorOf<XercesLocationPath>* fLocationPaths;
};


class VALIDATORS_EXPORT XPathScanner
{
public:
    // -----------------------------------------------------------------------
    //  Constants
    // -----------------------------------------------------------------------
    enum {
        CHARTYPE_INVALID            =  0,   // invalid XML character
        CHARTYPE_OTHER              =  1,   // not special - one of "#%&;?\^`{}~" or DEL
        CHARTYPE_WHITESPACE         =  2,   // one of "\t\n\r " (0x09, 0x0A, 0x0D, 0x20)
        CHARTYPE_EXCLAMATION        =  3,   // '!' (0x21)
        CHARTYPE_QUOTE              =  4,   // '\"' or '\'' (0x22 and 0x27)
        CHARTYPE_DOLLAR             =  5,   // '$' (0x24)
        CHARTYPE_OPEN_PAREN         =  6,   // '(' (0x28)
        CHARTYPE_CLOSE_PAREN        =  7,   // ')' (0x29)
        CHARTYPE_STAR               =  8,   // '*' (0x2A)
        CHARTYPE_PLUS               =  9,   // '+' (0x2B)
        CHARTYPE_COMMA              = 10,   // ',' (0x2C)
        CHARTYPE_MINUS              = 11,   // '-' (0x2D)
        CHARTYPE_PERIOD             = 12,   // '.' (0x2E)
        CHARTYPE_SLASH              = 13,   // '/' (0x2F)
        CHARTYPE_DIGIT              = 14,   // '0'-'9' (0x30 to 0x39)
        CHARTYPE_COLON              = 15,   // ':' (0x3A)
        CHARTYPE_LESS               = 16,   // '<' (0x3C)
        CHARTYPE_EQUAL              = 17,   // '=' (0x3D)
        CHARTYPE_GREATER            = 18,   // '>' (0x3E)
        CHARTYPE_ATSIGN             = 19,   // '@' (0x40)
        CHARTYPE_LETTER             = 20,   // 'A'-'Z' or 'a'-'z' (0x41 to 0x5A and 0x61 to 0x7A)
        CHARTYPE_OPEN_BRACKET       = 21,   // '[' (0x5B)
        CHARTYPE_CLOSE_BRACKET      = 22,   // ']' (0x5D)
        CHARTYPE_UNDERSCORE         = 23,   // '_' (0x5F)
        CHARTYPE_UNION              = 24,   // '|' (0x7C)
        CHARTYPE_NONASCII           = 25   // Non-ASCII Unicode codepoint (>= 0x80)
    };

    // -----------------------------------------------------------------------
    //  Constructors/Destructor
    // -----------------------------------------------------------------------
    XPathScanner(XMLStringPool* const stringPool);
    virtual ~XPathScanner() {}

    // -----------------------------------------------------------------------
    //  Scan methods
    // -----------------------------------------------------------------------
    bool scanExpression(const XMLCh* const data, int currentOffset,
                        const int endOffset, ValueVectorOf<int>* const tokens);

protected:
    // -----------------------------------------------------------------------
    //  Helper methods
    // -----------------------------------------------------------------------
    /**
      * This method adds the specified token to the token list. By default,
      * this method allows all tokens. However, subclasses can can override
      * this method in order to disallow certain tokens from being used in the
      * scanned XPath expression. This is a convenient way of allowing only
      * a subset of XPath.
      */
    virtual void addToken(ValueVectorOf<int>* const tokens, const int aToken);

private:
    // -----------------------------------------------------------------------
    //  Unimplemented contstructors and operators
    // -----------------------------------------------------------------------
    XPathScanner(const XPathScanner& other);
    XPathScanner& operator= (const XPathScanner& other);

    // -----------------------------------------------------------------------
    //  Helper methods
    // -----------------------------------------------------------------------
    void init();

    // -----------------------------------------------------------------------
    //  Scan methods
    // -----------------------------------------------------------------------
    int scanNCName(const XMLCh* const data, const int endOffset,
                   int currentOffset);
    int scanNumber(const XMLCh* const data, const int endOffset,
                   int currentOffset, ValueVectorOf<int>* const tokens);

    // -----------------------------------------------------------------------
    //  Data members
    // -----------------------------------------------------------------------
    int fAndSymbol;
    int fOrSymbol;
    int fModSymbol;
    int fDivSymbol;
    int fCommentSymbol;
    int fTextSymbol;
    int fPISymbol;
    int fNodeSymbol;
    int fAncestorSymbol;
    int fAncestorOrSelfSymbol;
    int fAttributeSymbol;
    int fChildSymbol;
    int fDescendantSymbol;
    int fDescendantOrSelfSymbol;
    int fFollowingSymbol;
    int fFollowingSiblingSymbol;
    int fNamespaceSymbol;
    int fParentSymbol;
    int fPrecedingSymbol;
    int fPrecedingSiblingSymbol;
    int fSelfSymbol;
    XMLStringPool* fStringPool;

    static const XMLByte fASCIICharMap[128];
};


class VALIDATORS_EXPORT XPathScannerForSchema: public XPathScanner
{
public:
    // -----------------------------------------------------------------------
    //  Constructors/Destructor
    // -----------------------------------------------------------------------
    XPathScannerForSchema(XMLStringPool* const stringPool);
    ~XPathScannerForSchema() {}

protected:
    // -----------------------------------------------------------------------
    //  Helper methods
    // -----------------------------------------------------------------------
    void addToken(ValueVectorOf<int>* const tokens, const int aToken);

private:
    // -----------------------------------------------------------------------
    //  Unimplemented contstructors and operators
    // -----------------------------------------------------------------------
    XPathScannerForSchema(const XPathScannerForSchema& other);
    XPathScannerForSchema& operator= (const XPathScannerForSchema& other);
};

// ---------------------------------------------------------------------------
//  XercesLocationPath: Access methods
// ---------------------------------------------------------------------------
inline unsigned int XercesLocationPath::getStepSize() const {

    if (fSteps)
        return fSteps->size();

    return 0;
}

inline void XercesLocationPath::addStep(XercesStep* const aStep) {

    if (!fSteps) {
        fSteps = new RefVectorOf<XercesStep>(16);
    }

    fSteps->addElement(aStep);
}

inline XercesStep* XercesLocationPath::getStep(const unsigned int index) const {

    if (fSteps)
        return fSteps->elementAt(index);

    return 0;
}

// ---------------------------------------------------------------------------
//  XercesScanner: Helper methods
// ---------------------------------------------------------------------------
inline void XPathScanner::addToken(ValueVectorOf<int>* const tokens,
                                   const int aToken) {
    tokens->addElement(aToken);
}


// ---------------------------------------------------------------------------
//  XercesXPath: Getter methods
// ---------------------------------------------------------------------------
inline RefVectorOf<XercesLocationPath>* XercesXPath::getLocationPaths() const {

    return fLocationPaths;
}

XERCES_CPP_NAMESPACE_END

#endif

/**
  * End of file XercesPath.hpp
  */