00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 1999 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 #if !defined(XPATHPROCESSORIMPL_HEADER_GUARD_1357924680) 00058 #define XPATHPROCESSORIMPL_HEADER_GUARD_1357924680 00059 00060 00061 00062 // Base header file. Must be first. 00063 #include <XPath/XPathDefinitions.hpp> 00064 00065 00066 00067 #include <set> 00068 #include <vector> 00069 00070 00071 00072 #include <XalanDOM/XalanDOMString.hpp> 00073 00074 00075 00076 // Base class header file... 00077 #include <XPath/XPathProcessor.hpp> 00078 00079 00080 00081 #include <XPath/XPath.hpp> 00082 00083 00084 00085 class XalanNode; 00086 00087 00088 00093 class XALAN_XPATH_EXPORT XPathProcessorImpl : public XPathProcessor 00094 { 00095 public: 00096 00097 #if defined(XALAN_NO_NAMESPACES) 00098 typedef map<XalanDOMString, 00099 int, 00100 less<XalanDOMString> > KeywordsMapType; 00101 typedef map<XalanDOMString, 00102 XPathExpression::eOpCodes, 00103 less<XalanDOMString> > FunctionNameMapType; 00104 typedef map<XalanDOMString, 00105 XPathExpression::eOpCodes, 00106 less<XalanDOMString> > AxisNamesMapType; 00107 typedef map<XalanDOMString, 00108 XPathExpression::eOpCodes, 00109 less<XalanDOMString> > NodeTypesMapType; 00110 00111 typedef vector<XalanDOMString> DOMStringVectorType; 00112 #else 00113 typedef std::map<XalanDOMString, 00114 int> KeywordsMapType; 00115 typedef std::map<XalanDOMString, 00116 XPathExpression::eOpCodes> FunctionNameMapType; 00117 typedef std::map<XalanDOMString, 00118 XPathExpression::eOpCodes> AxisNamesMapType; 00119 typedef std::map<XalanDOMString, 00120 XPathExpression::eOpCodes> NodeTypesMapType; 00121 00122 typedef std::vector<XalanDOMString> DOMStringVectorType; 00123 #endif 00124 00128 static void 00129 initialize(); 00130 00134 static void 00135 terminate(); 00136 00137 explicit 00138 XPathProcessorImpl(); 00139 00140 virtual 00141 ~XPathProcessorImpl(); 00142 00143 00144 // These are inherited from XPathProcessor... 00145 00146 virtual void 00147 initXPath( 00148 XPath& pathObj, 00149 const XalanDOMString& expression, 00150 const PrefixResolver& prefixResolver, 00151 const XPathEnvSupport& envSupport); 00152 00153 virtual void 00154 initMatchPattern( 00155 XPath& pathObj, 00156 const XalanDOMString& expression, 00157 const PrefixResolver& prefixResolver, 00158 const XPathEnvSupport& envSupport); 00159 00160 private: 00161 00169 void 00170 tokenize( 00171 const XalanDOMString& pat, 00172 DOMStringVectorType* targetStrings = 0); 00173 00179 bool 00180 mapPatternElemPos( 00181 int nesting, 00182 bool isStart, 00183 bool isAttrName) const; 00184 00188 void 00189 recordTokenString(DOMStringVectorType& targetStrings); 00190 00191 void 00192 addToTokenQueue(const XalanDOMString& s) const; 00193 00198 int 00199 mapNSTokens( 00200 const XalanDOMString& pat, 00201 int startSubstring, 00202 int posOfNSSep, 00203 int posOfScan) const; 00204 00208 int 00209 getTokenQueuePosFromMap(int i) const; 00210 00216 int 00217 getNextTargetIndexInMap(int i) const; 00218 00223 int 00224 getNextIndexInMap(int i) const; 00225 00232 int 00233 getNextSubpatternStartIndexInMap(int i) const; 00234 00240 int 00241 getNextPatternPos(int i) const; 00242 00248 int 00249 getPrevMapIndex(int i) const; 00250 00256 bool 00257 tokenIs(const XalanDOMString& s) const; 00258 00264 bool 00265 tokenIs(const XalanDOMChar* s) const; 00266 00272 bool 00273 tokenIs(const char* s) const; 00274 00280 bool 00281 tokenIs(char c) const; 00282 00290 bool 00291 lookahead( 00292 XalanDOMChar c, 00293 int n) const; 00294 00302 bool 00303 lookahead( 00304 const XalanDOMChar* s, 00305 int n) const; 00306 00314 bool 00315 lookahead( 00316 const XalanDOMString& s, 00317 int n) const; 00318 00329 bool 00330 lookbehind( 00331 char c, 00332 int n) const; 00333 00344 bool 00345 lookbehindHasToken(int n) const; 00346 00351 void 00352 nextToken(); 00353 00358 XalanDOMString 00359 getTokenRelative(int theOffset) const; 00360 00365 void 00366 prevToken(); 00367 00372 void 00373 resetTokenMark(int mark); 00374 00379 void 00380 consumeExpected(const char* expected); 00381 00386 void 00387 consumeExpected(char expected); 00388 00392 void 00393 warn( 00394 const XalanDOMString& msg, 00395 XalanNode* sourceNode = 0) const; 00396 00400 void 00401 warn( 00402 const char* msg, 00403 XalanNode* sourceNode = 0) const; 00404 00409 void 00410 error( 00411 const XalanDOMString& msg, 00412 XalanNode* sourceNode = 0) const; 00413 00418 void 00419 error( 00420 const char* msg, 00421 XalanNode* sourceNode = 0) const; 00422 00426 int 00427 getKeywordToken(const XalanDOMString& key) const; 00428 00432 int 00433 getFunctionToken(const XalanDOMString& key) const; 00434 00441 void 00442 Expr(); 00443 00444 00452 void 00453 OrExpr(); 00454 00462 void 00463 AndExpr() ; 00464 00474 int 00475 EqualityExpr(int opCodePos = -1); 00476 00489 int 00490 RelationalExpr(int opCodePos = -1); 00491 00502 int 00503 AdditiveExpr(int opCodePos = -1); 00504 00517 int 00518 MultiplicativeExpr(int opCodePos = -1); 00519 00529 void 00530 UnaryExpr(); 00531 00537 void 00538 StringExpr(); 00539 00546 void 00547 BooleanExpr(); 00548 00555 void 00556 NumberExpr(); 00557 00569 void 00570 UnionExpr(); 00571 00583 void 00584 PathExpr(); 00585 00595 void 00596 FilterExpr(); 00597 00607 void 00608 PrimaryExpr(); 00609 00610 00616 void 00617 Argument(); 00618 00624 void 00625 FunctionCall(); 00626 00633 void 00634 LocationPath(); 00635 00643 void 00644 RelativeLocationPath(); 00645 00651 void 00652 Step(); 00653 00659 void 00660 Basis(); 00661 00667 int 00668 AxisName(); 00669 00676 void 00677 NodeTest(int axisType); 00678 00684 void 00685 Predicate(); 00686 00692 void 00693 PredicateExpr(); 00694 00700 void 00701 QName(); 00702 00707 void 00708 NCName(); 00709 00718 void 00719 Literal(); 00720 00726 void 00727 Number(); 00728 00735 void 00736 Pattern(); 00737 00746 void 00747 LocationPathPattern(); 00748 00756 void 00757 IdKeyPattern(); 00758 00766 void 00767 RelativePathPattern(); 00768 00774 void 00775 StepPattern(); 00776 00782 void 00783 AbbreviatedNodeTestStep(); 00784 00785 bool 00786 isValidFunction(const XalanDOMString& key) const; 00787 00788 private: 00789 00790 int 00791 FunctionCallArguments(); 00792 00793 static void 00794 initializeKeywordsTable(KeywordsMapType& theKeywords); 00795 00796 static void 00797 initializeFunctionTable(FunctionNameMapType& theFunctions); 00798 00799 static void 00800 initializeAxisNamesTable(AxisNamesMapType& theAxisNames); 00801 00802 static void 00803 initializeNodeTypesTable(NodeTypesMapType& theNodeTypes); 00804 00808 XalanDOMString m_token; 00809 00815 XalanDOMChar m_tokenChar; 00816 00820 XPath* m_xpath; 00821 00825 XPathExpression* m_expression; 00826 00830 const PrefixResolver* m_prefixResolver; 00831 00832 const XPathEnvSupport* m_envSupport; 00833 00834 enum eDummy 00835 { 00836 TARGETEXTRA = 10000 00837 }; 00838 00839 // This shouldn't really be here, since it duplicates a string that is part 00840 // of the information that is maintained by the class XPathFunctionTable, 00841 // but this is a reasonable optimization. 00842 static const XalanDOMString& s_functionIDString; 00843 00844 00845 // This shouldn't really be here, since it's not part of the XPath standard, 00846 // but rather a part ofthe XSLT standard. 00847 static const XalanDOMString& s_functionKeyString; 00848 00849 static const XalanDOMString& s_orString; 00850 00851 static const XalanDOMString& s_andString; 00852 00853 static const XalanDOMString& s_divString; 00854 00855 static const XalanDOMString& s_modString; 00856 00857 static const XalanDOMString& s_quoString; 00858 00859 static const XalanDOMString& s_dotString; 00860 00861 static const XalanDOMString& s_dotDotString; 00862 00863 static const XalanDOMString& s_axisString; 00864 00865 static const XalanDOMString& s_attributeString; 00866 00867 static const XalanDOMString& s_childString; 00868 00872 static const KeywordsMapType& s_keywords; 00873 00874 static const FunctionNameMapType& s_functions; 00875 00876 static const AxisNamesMapType& s_axisNames; 00877 00878 static const NodeTypesMapType& s_nodeTypes; 00879 }; 00880 00881 00882 00883 #endif // XPATHPROCESSORIMPL_HEADER_GUARD_1357924680
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