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XercesXPath.hpp
资源名称：xerces-c-src_2_3_0.zip　[点击查看]
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上传日期：2013-06-25
资源大小：10074k
文件大小：21k
源码类别：

词法分析

开发平台：

Visual C++

XercesXPath.hpp：源码内容
  1. /*
  2.  * The Apache Software License, Version 1.1
  3.  *
  4.  * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
  5.  * reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * 1. Redistributions of source code must retain the above copyright
  12.  *    notice, this list of conditions and the following disclaimer.
  13.  *
  14.  * 2. Redistributions in binary form must reproduce the above copyright
  15.  *    notice, this list of conditions and the following disclaimer in
  16.  *    the documentation and/or other materials provided with the
  17.  *    distribution.
  18.  *
  19.  * 3. The end-user documentation included with the redistribution,
  20.  *    if any, must include the following acknowledgment:
  21.  *       "This product includes software developed by the
  22.  *        Apache Software Foundation (http://www.apache.org/)."
  23.  *    Alternately, this acknowledgment may appear in the software itself,
  24.  *    if and wherever such third-party acknowledgments normally appear.
  25.  *
  26.  * 4. The names "Xerces" and "Apache Software Foundation" must
  27.  *    not be used to endorse or promote products derived from this
  28.  *    software without prior written permission. For written
  29.  *    permission, please contact apache@apache.org.
  30.  *
  31.  * 5. Products derived from this software may not be called "Apache",
  32.  *    nor may "Apache" appear in their name, without prior written
  33.  *    permission of the Apache Software Foundation.
  34.  *
  35.  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  36.  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  37.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  38.  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  39.  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40.  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  41.  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  42.  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  43.  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  44.  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  45.  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  46.  * SUCH DAMAGE.
  47.  * ====================================================================
  48.  *
  49.  * This software consists of voluntary contributions made by many
  50.  * individuals on behalf of the Apache Software Foundation, and was
  51.  * originally based on software copyright (c) 2001, International
  52.  * Business Machines, Inc., http://www.ibm.com .  For more information
  53.  * on the Apache Software Foundation, please see
  54.  * <http://www.apache.org/>.
  55.  */
  57. /*
  58.  * $Id: XercesXPath.hpp,v 1.6 2003/05/22 02:10:52 knoaman Exp $
  59.  */
  61. #if !defined(XERCESXPATH_HPP)
  62. #define XERCESXPATH_HPP
  65. // ---------------------------------------------------------------------------
  66. //  Includes
  67. // ---------------------------------------------------------------------------
  68. #include <xercesc/util/QName.hpp>
  69. #include <xercesc/util/RefVectorOf.hpp>
  70. #include <xercesc/util/ValueVectorOf.hpp>
  72. XERCES_CPP_NAMESPACE_BEGIN
  74. // ---------------------------------------------------------------------------
  75. //  Forward Declarations
  76. // ---------------------------------------------------------------------------
  77. class XMLStringPool;
  78. class NamespaceScope;
  81. class VALIDATORS_EXPORT XercesNodeTest : public XMemory
  82. {
  83. public:
  84.     // -----------------------------------------------------------------------
  85.     //  Constants
  86.     // -----------------------------------------------------------------------
  87.     enum {
  88.         QNAME = 1,
  89.         WILDCARD = 2,
  90.         NODE = 3,
  91.         NAMESPACE= 4
  92.     };
  94.     // -----------------------------------------------------------------------
  95.     //  Constructors/Destructor
  96.     // -----------------------------------------------------------------------
  97.     XercesNodeTest(const short type,
  98.                    MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
  99.     XercesNodeTest(const QName* const qName);
  100.     XercesNodeTest(const XMLCh* const prefix, const unsigned int uriId,
  101.                    MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
  102.     XercesNodeTest(const XercesNodeTest& other);
  103.     ~XercesNodeTest() { delete fName; }
  105.     // -----------------------------------------------------------------------
  106.     //  Operators
  107.     // -----------------------------------------------------------------------
  108.     XercesNodeTest& operator= (const XercesNodeTest& other);
  109.     bool operator== (const XercesNodeTest& other) const;
  110.     bool operator!= (const XercesNodeTest& other) const;
  112. // -----------------------------------------------------------------------
  113.     //  Getter methods
  114.     // -----------------------------------------------------------------------
  115.     short getType() const { return fType; }
  116.     QName* getName() const { return fName; }
  118. private:
  119.     // -----------------------------------------------------------------------
  120.     //  Data members
  121.     // -----------------------------------------------------------------------
  122.     short  fType;
  123.     QName* fName;
  124. };
  127. /**
  128.   * A location path step comprised of an axis and node test.
  129.   */
  130. class VALIDATORS_EXPORT XercesStep : public XMemory
  131. {
  132. public:
  133.     // -----------------------------------------------------------------------
  134.     //  Constants
  135.     // -----------------------------------------------------------------------
  136.     enum { // Axis type
  137.         CHILD = 1,
  138.         ATTRIBUTE = 2,
  139.         SELF = 3,
  140.         DESCENDANT = 4
  141.     };
  143.     // -----------------------------------------------------------------------
  144.     //  Constructors/Destructor
  145.     // -----------------------------------------------------------------------
  146.     XercesStep(const unsigned short axisType, XercesNodeTest* const nodeTest);
  147.     XercesStep(const XercesStep& other);
  148.     ~XercesStep() { delete fNodeTest; }
  150.     // -----------------------------------------------------------------------
  151.     //  Operators
  152.     // -----------------------------------------------------------------------
  153.     XercesStep& operator= (const XercesStep& other);
  154.     bool operator== (const XercesStep& other) const;
  155.     bool operator!= (const XercesStep& other) const;
  157. // -----------------------------------------------------------------------
  158.     //  Getter methods
  159.     // -----------------------------------------------------------------------
  160.     unsigned short getAxisType() const { return fAxisType; }
  161.     XercesNodeTest* getNodeTest() const { return fNodeTest; }
  163. private:
  164.     // -----------------------------------------------------------------------
  165.     //  Data members
  166.     // -----------------------------------------------------------------------
  167.     unsigned short  fAxisType;
  168.     XercesNodeTest* fNodeTest;
  169. };
  172. /**
  173.   * A location path representation for an XPath expression.
  174.   */
  175. class VALIDATORS_EXPORT XercesLocationPath : public XMemory
  176. {
  177. public:
  178.     // -----------------------------------------------------------------------
  179.     //  Constructors/Destructor
  180.     // -----------------------------------------------------------------------
  181.     XercesLocationPath(RefVectorOf<XercesStep>* const steps);
  182.     ~XercesLocationPath() { delete fSteps; }
  184.     // -----------------------------------------------------------------------
  185.     //  Operators
  186.     // -----------------------------------------------------------------------
  187.     bool operator== (const XercesLocationPath& other) const;
  188.     bool operator!= (const XercesLocationPath& other) const;
  190.     // -----------------------------------------------------------------------
  191.     //  Access methods
  192.     // -----------------------------------------------------------------------
  193.     unsigned int getStepSize() const;
  194.     void addStep(XercesStep* const aStep);
  195.     XercesStep* getStep(const unsigned int index) const;
  197. private:
  198.     // -----------------------------------------------------------------------
  199.     //  Unimplemented contstructors and operators
  200.     // -----------------------------------------------------------------------
  201.     XercesLocationPath(const XercesLocationPath& other);
  202.     XercesLocationPath& operator= (const XercesLocationPath& other);
  204.     // -----------------------------------------------------------------------
  205.     //  Data members
  206.     // -----------------------------------------------------------------------
  207.     RefVectorOf<XercesStep>* fSteps;
  208. };
  211. class VALIDATORS_EXPORT XercesXPath : public XMemory
  212. {
  213. public:
  214.     // -----------------------------------------------------------------------
  215.     //  Constants
  216.     // -----------------------------------------------------------------------
  217.     /**
  218.       * [28] ExprToken ::= '(' | ')' | '[' | ']' | '.' | '..' | '@' | ',' | '::'
  219.       *                  | NameTest | NodeType | Operator | FunctionName
  220.       *                  | AxisName | Literal | Number | VariableReference
  221.       */
  222.     enum {
  223.         EXPRTOKEN_OPEN_PAREN                  =  0,
  224.         EXPRTOKEN_CLOSE_PAREN                 =  1,
  225.         EXPRTOKEN_OPEN_BRACKET                =  2,
  226.         EXPRTOKEN_CLOSE_BRACKET               =  3,
  227.         EXPRTOKEN_PERIOD                      =  4,
  228.         EXPRTOKEN_DOUBLE_PERIOD               =  5,
  229.         EXPRTOKEN_ATSIGN                      =  6,
  230.         EXPRTOKEN_COMMA                       =  7,
  231.         EXPRTOKEN_DOUBLE_COLON                =  8,
  232.         EXPRTOKEN_NAMETEST_ANY                =  9,
  233.         EXPRTOKEN_NAMETEST_NAMESPACE          = 10,
  234.         EXPRTOKEN_NAMETEST_QNAME              = 11,
  235.         EXPRTOKEN_NODETYPE_COMMENT            = 12,
  236.         EXPRTOKEN_NODETYPE_TEXT               = 13,
  237.         EXPRTOKEN_NODETYPE_PI                 = 14,
  238.         EXPRTOKEN_NODETYPE_NODE               = 15,
  239.         EXPRTOKEN_OPERATOR_AND                = 16,
  240.         EXPRTOKEN_OPERATOR_OR                 = 17,
  241.         EXPRTOKEN_OPERATOR_MOD                = 18,
  242.         EXPRTOKEN_OPERATOR_DIV                = 19,
  243.         EXPRTOKEN_OPERATOR_MULT               = 20,
  244.         EXPRTOKEN_OPERATOR_SLASH              = 21,
  245.         EXPRTOKEN_OPERATOR_DOUBLE_SLASH       = 22,
  246.         EXPRTOKEN_OPERATOR_UNION              = 23,
  247.         EXPRTOKEN_OPERATOR_PLUS               = 24,
  248.         EXPRTOKEN_OPERATOR_MINUS              = 25,
  249.         EXPRTOKEN_OPERATOR_EQUAL              = 26,
  250.         EXPRTOKEN_OPERATOR_NOT_EQUAL          = 27,
  251.         EXPRTOKEN_OPERATOR_LESS               = 28,
  252.         EXPRTOKEN_OPERATOR_LESS_EQUAL         = 29,
  253.         EXPRTOKEN_OPERATOR_GREATER            = 30,
  254.         EXPRTOKEN_OPERATOR_GREATER_EQUAL      = 31,
  255.         EXPRTOKEN_FUNCTION_NAME               = 32,
  256.         EXPRTOKEN_AXISNAME_ANCESTOR           = 33,
  257.         EXPRTOKEN_AXISNAME_ANCESTOR_OR_SELF   = 34,
  258.         EXPRTOKEN_AXISNAME_ATTRIBUTE          = 35,
  259.         EXPRTOKEN_AXISNAME_CHILD              = 36,
  260.         EXPRTOKEN_AXISNAME_DESCENDANT         = 37,
  261.         EXPRTOKEN_AXISNAME_DESCENDANT_OR_SELF = 38,
  262.         EXPRTOKEN_AXISNAME_FOLLOWING          = 39,
  263.         EXPRTOKEN_AXISNAME_FOLLOWING_SIBLING  = 40,
  264.         EXPRTOKEN_AXISNAME_NAMESPACE          = 41,
  265.         EXPRTOKEN_AXISNAME_PARENT             = 42,
  266.         EXPRTOKEN_AXISNAME_PRECEDING          = 43,
  267.         EXPRTOKEN_AXISNAME_PRECEDING_SIBLING  = 44,
  268.         EXPRTOKEN_AXISNAME_SELF               = 45,
  269.         EXPRTOKEN_LITERAL                     = 46,
  270.         EXPRTOKEN_NUMBER                      = 47,
  271.         EXPRTOKEN_VARIABLE_REFERENCE          = 48
  272.     };
  274.     // -----------------------------------------------------------------------
  275.     //  Constructors/Destructor
  276.     // -----------------------------------------------------------------------
  277.     XercesXPath(const XMLCh* const xpathExpr,
  278.                 XMLStringPool* const stringPool,
  279.                 NamespaceScope* const scopeContext,
  280.                 const unsigned int emptyNamespaceId,
  281.                 const bool isSelector = false,
  282.                 MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
  283. ~XercesXPath();
  285.     // -----------------------------------------------------------------------
  286.     //  Operators
  287.     // -----------------------------------------------------------------------
  288.     bool operator== (const XercesXPath& other) const;
  289.     bool operator!= (const XercesXPath& other) const;
  291.     // -----------------------------------------------------------------------
  292.     //  Constructors/Destructor
  293.     // -----------------------------------------------------------------------
  294.     RefVectorOf<XercesLocationPath>* getLocationPaths() const;
  296. private:
  297.     // -----------------------------------------------------------------------
  298.     //  Unimplemented contstructors and operators
  299.     // -----------------------------------------------------------------------
  300.     XercesXPath(const XercesXPath& other);
  301.     XercesXPath& operator= (const XercesXPath& other);
  303.     // -----------------------------------------------------------------------
  304.     //  Helper methods
  305.     // -----------------------------------------------------------------------
  306.     void cleanUp();
  307.     void checkForSelectedAttributes();
  308.     void parseExpression(XMLStringPool* const stringPool,
  309.                          NamespaceScope* const scopeContext);
  311.     // -----------------------------------------------------------------------
  312.     //  Data members
  313.     // -----------------------------------------------------------------------
  314.     unsigned int                     fEmptyNamespaceId;
  315.     XMLCh*                           fExpression;
  316.     RefVectorOf<XercesLocationPath>* fLocationPaths;
  317.     MemoryManager*                   fMemoryManager;
  318. };
  321. class VALIDATORS_EXPORT XPathScanner : public XMemory
  322. {
  323. public:
  324.     // -----------------------------------------------------------------------
  325.     //  Constants
  326.     // -----------------------------------------------------------------------
  327.     enum {
  328.         CHARTYPE_INVALID            =  0,   // invalid XML character
  329.         CHARTYPE_OTHER              =  1,   // not special - one of "#%&;?^`{}~" or DEL
  330.         CHARTYPE_WHITESPACE         =  2,   // one of "tnr " (0x09, 0x0A, 0x0D, 0x20)
  331.         CHARTYPE_EXCLAMATION        =  3,   // '!' (0x21)
  332.         CHARTYPE_QUOTE              =  4,   // '"' or ''' (0x22 and 0x27)
  333.         CHARTYPE_DOLLAR             =  5,   // '$' (0x24)
  334.         CHARTYPE_OPEN_PAREN         =  6,   // '(' (0x28)
  335.         CHARTYPE_CLOSE_PAREN        =  7,   // ')' (0x29)
  336.         CHARTYPE_STAR               =  8,   // '*' (0x2A)
  337.         CHARTYPE_PLUS               =  9,   // '+' (0x2B)
  338.         CHARTYPE_COMMA              = 10,   // ',' (0x2C)
  339.         CHARTYPE_MINUS              = 11,   // '-' (0x2D)
  340.         CHARTYPE_PERIOD             = 12,   // '.' (0x2E)
  341.         CHARTYPE_SLASH              = 13,   // '/' (0x2F)
  342.         CHARTYPE_DIGIT              = 14,   // '0'-'9' (0x30 to 0x39)
  343.         CHARTYPE_COLON              = 15,   // ':' (0x3A)
  344.         CHARTYPE_LESS               = 16,   // '<' (0x3C)
  345.         CHARTYPE_EQUAL              = 17,   // '=' (0x3D)
  346.         CHARTYPE_GREATER            = 18,   // '>' (0x3E)
  347.         CHARTYPE_ATSIGN             = 19,   // '@' (0x40)
  348.         CHARTYPE_LETTER             = 20,   // 'A'-'Z' or 'a'-'z' (0x41 to 0x5A and 0x61 to 0x7A)
  349.         CHARTYPE_OPEN_BRACKET       = 21,   // '[' (0x5B)
  350.         CHARTYPE_CLOSE_BRACKET      = 22,   // ']' (0x5D)
  351.         CHARTYPE_UNDERSCORE         = 23,   // '_' (0x5F)
  352.         CHARTYPE_UNION              = 24,   // '|' (0x7C)
  353.         CHARTYPE_NONASCII           = 25   // Non-ASCII Unicode codepoint (>= 0x80)
  354.     };
  356.     // -----------------------------------------------------------------------
  357.     //  Constructors/Destructor
  358.     // -----------------------------------------------------------------------
  359.     XPathScanner(XMLStringPool* const stringPool);
  360.     virtual ~XPathScanner() {}
  362.     // -----------------------------------------------------------------------
  363.     //  Scan methods
  364.     // -----------------------------------------------------------------------
  365.     bool scanExpression(const XMLCh* const data, int currentOffset,
  366.                         const int endOffset, ValueVectorOf<int>* const tokens);
  368. protected:
  369.     // -----------------------------------------------------------------------
  370.     //  Helper methods
  371.     // -----------------------------------------------------------------------
  372.     /**
  373.       * This method adds the specified token to the token list. By default,
  374.       * this method allows all tokens. However, subclasses can can override
  375.       * this method in order to disallow certain tokens from being used in the
  376.       * scanned XPath expression. This is a convenient way of allowing only
  377.       * a subset of XPath.
  378.       */
  379.     virtual void addToken(ValueVectorOf<int>* const tokens, const int aToken);
  381. private:
  382.     // -----------------------------------------------------------------------
  383.     //  Unimplemented contstructors and operators
  384.     // -----------------------------------------------------------------------
  385.     XPathScanner(const XPathScanner& other);
  386.     XPathScanner& operator= (const XPathScanner& other);
  388.     // -----------------------------------------------------------------------
  389.     //  Helper methods
  390.     // -----------------------------------------------------------------------
  391.     void init();
  393.     // -----------------------------------------------------------------------
  394.     //  Scan methods
  395.     // -----------------------------------------------------------------------
  396.     int scanNCName(const XMLCh* const data, const int endOffset,
  397.                    int currentOffset);
  398.     int scanNumber(const XMLCh* const data, const int endOffset,
  399.                    int currentOffset, ValueVectorOf<int>* const tokens);
  401.     // -----------------------------------------------------------------------
  402.     //  Data members
  403.     // -----------------------------------------------------------------------
  404.     int fAndSymbol;
  405.     int fOrSymbol;
  406.     int fModSymbol;
  407.     int fDivSymbol;
  408.     int fCommentSymbol;
  409.     int fTextSymbol;
  410.     int fPISymbol;
  411.     int fNodeSymbol;
  412.     int fAncestorSymbol;
  413.     int fAncestorOrSelfSymbol;
  414.     int fAttributeSymbol;
  415.     int fChildSymbol;
  416.     int fDescendantSymbol;
  417.     int fDescendantOrSelfSymbol;
  418.     int fFollowingSymbol;
  419.     int fFollowingSiblingSymbol;
  420.     int fNamespaceSymbol;
  421.     int fParentSymbol;
  422.     int fPrecedingSymbol;
  423.     int fPrecedingSiblingSymbol;
  424.     int fSelfSymbol;
  425.     XMLStringPool* fStringPool;
  427.     static const XMLByte fASCIICharMap[128];
  428. };
  431. class VALIDATORS_EXPORT XPathScannerForSchema: public XPathScanner
  432. {
  433. public:
  434.     // -----------------------------------------------------------------------
  435.     //  Constructors/Destructor
  436.     // -----------------------------------------------------------------------
  437.     XPathScannerForSchema(XMLStringPool* const stringPool);
  438.     ~XPathScannerForSchema() {}
  440. protected:
  441.     // -----------------------------------------------------------------------
  442.     //  Helper methods
  443.     // -----------------------------------------------------------------------
  444.     void addToken(ValueVectorOf<int>* const tokens, const int aToken);
  446. private:
  447.     // -----------------------------------------------------------------------
  448.     //  Unimplemented contstructors and operators
  449.     // -----------------------------------------------------------------------
  450.     XPathScannerForSchema(const XPathScannerForSchema& other);
  451.     XPathScannerForSchema& operator= (const XPathScannerForSchema& other);
  452. };
  454. // ---------------------------------------------------------------------------
  455. //  XercesLocationPath: Access methods
  456. // ---------------------------------------------------------------------------
  457. inline unsigned int XercesLocationPath::getStepSize() const {
  459.     if (fSteps)
  460.         return fSteps->size();
  462.     return 0;
  463. }
  465. inline void XercesLocationPath::addStep(XercesStep* const aStep) {
  467.     fSteps->addElement(aStep);
  468. }
  470. inline XercesStep* XercesLocationPath::getStep(const unsigned int index) const {
  472.     if (fSteps)
  473.         return fSteps->elementAt(index);
  475.     return 0;
  476. }
  478. // ---------------------------------------------------------------------------
  479. //  XercesScanner: Helper methods
  480. // ---------------------------------------------------------------------------
  481. inline void XPathScanner::addToken(ValueVectorOf<int>* const tokens,
  482.                                    const int aToken) {
  483.     tokens->addElement(aToken);
  484. }
  487. // ---------------------------------------------------------------------------
  488. //  XercesXPath: Getter methods
  489. // ---------------------------------------------------------------------------
  490. inline RefVectorOf<XercesLocationPath>* XercesXPath::getLocationPaths() const {
  492.     return fLocationPaths;
  493. }
  495. XERCES_CPP_NAMESPACE_END
  497. #endif
  499. /**
  500.   * End of file XercesPath.hpp
  501.   */