00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 1999-2004 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(XOBJECT_HEADER_GUARD_1357924680) 00058 #define XOBJECT_HEADER_GUARD_1357924680 00059 00060 00061 00062 // Base include file. Must be first. 00063 #include <xalanc/XPath/XPathDefinitions.hpp> 00064 00065 00066 00067 #include <xalanc/XalanDOM/XalanDOMString.hpp> 00068 00069 00070 00071 #include <xalanc/PlatformSupport/DoubleSupport.hpp> 00072 #include <xalanc/PlatformSupport/FormatterListener.hpp> 00073 #include <xalanc/PlatformSupport/XalanReferenceCountedObject.hpp> 00074 00075 00076 00077 #include <xalanc/DOMSupport/DOMServices.hpp> 00078 00079 00080 00081 #include <xalanc/XPath/NodeRefListBase.hpp> 00082 #include <xalanc/XPath/XalanXPathException.hpp> 00083 00084 00085 00086 XALAN_CPP_NAMESPACE_BEGIN 00087 00088 00089 00090 class MutableNodeRefList; 00091 class NodeRefListBase; 00092 class XalanDocumentFragment; 00093 class XObjectFactory; 00094 class XObjectTypeCallback; 00095 class XPathExecutionContext; 00096 00097 00098 00102 class XALAN_XPATH_EXPORT XObject : protected XalanReferenceCountedObject 00103 { 00104 public: 00105 00106 friend class XObjectPtr; 00107 00111 enum eObjectType { eTypeNull = 0, 00112 eTypeUnknown = 1, 00113 eTypeBoolean = 2, 00114 eTypeNumber = 3, 00115 eTypeString = 4, 00116 eTypeNodeSet = 5, 00117 eTypeResultTreeFrag = 6, 00118 eTypeUserDefined = 7, 00119 // These next types are implementation-specific, and 00120 // are never returned by getType(). 00121 eTypeStringReference = 8, 00122 eTypeStringAdapter = 9, 00123 eTypeStringCached = 10, 00124 eTypeXTokenNumberAdapter = 11, 00125 eTypeXTokenStringAdapter = 12, 00126 eTypeNodeSetNodeProxy = 13, 00127 eUnknown 00128 }; 00129 00133 static void 00134 initialize(); 00135 00139 static void 00140 terminate(); 00141 00147 XObject(eObjectType theObjectType); 00148 00149 XObject(const XObject& source); 00150 00157 virtual XObject* 00158 clone(void* theAddress = 0) const = 0; 00159 00166 virtual XalanDOMString 00167 getTypeString() const = 0; 00168 00174 virtual double 00175 num() const; 00176 00182 virtual bool 00183 boolean() const; 00184 00190 virtual const XalanDOMString& 00191 str() const; 00192 00193 typedef void (FormatterListener::*MemberFunctionPtr)(const XMLCh* const, const unsigned int); 00194 00202 virtual void 00203 str( 00204 FormatterListener& formatterListener, 00205 MemberFunctionPtr function) const = 0; 00206 00212 virtual double 00213 stringLength() const = 0; 00214 00220 virtual void 00221 str(XalanDOMString& theBuffer) const; 00222 00228 virtual const XalanDocumentFragment& 00229 rtree() const; 00230 00236 virtual const NodeRefListBase& 00237 nodeset() const; 00238 00244 virtual void 00245 ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) = 0; 00246 00252 virtual void 00253 ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) const = 0; 00254 00262 bool 00263 equals( 00264 const XObject& theRHS, 00265 XPathExecutionContext& executionContext) const; 00266 00274 bool 00275 notEquals( 00276 const XObject& theRHS, 00277 XPathExecutionContext& executionContext) const; 00278 00285 bool 00286 lessThan( 00287 const XObject& theRHS, 00288 XPathExecutionContext& executionContext) const; 00289 00297 bool 00298 lessThanOrEquals( 00299 const XObject& theRHS, 00300 XPathExecutionContext& executionContext) const; 00301 00308 bool 00309 greaterThan( 00310 const XObject& theRHS, 00311 XPathExecutionContext& executionContext) const; 00312 00320 bool 00321 greaterThanOrEquals( 00322 const XObject& theRHS, 00323 XPathExecutionContext& executionContext) const; 00324 00330 eObjectType 00331 getType() const 00332 { 00333 return m_objectType; 00334 } 00335 00341 static bool 00342 boolean(double theNumber) 00343 { 00344 return !DoubleSupport::isNaN(theNumber) && !DoubleSupport::equal(theNumber, 0.0); 00345 } 00346 00352 static bool 00353 boolean(const XalanDOMString& theString) 00354 { 00355 return theString.length() == 0 ? false : true; 00356 } 00357 00363 static bool 00364 boolean(const NodeRefListBase& theNodeList) 00365 { 00366 return theNodeList.getLength() == 0 ? false : true; 00367 } 00368 00374 static const XalanDOMString& 00375 string(bool theBool) 00376 { 00377 return theBool == true ? s_trueString : s_falseString; 00378 } 00379 00380 static void 00381 string( 00382 bool theBool, 00383 FormatterListener& formatterListener, 00384 MemberFunctionPtr function) 00385 { 00386 if(theBool == true) 00387 { 00388 (formatterListener.*function)(s_trueString.c_str(), s_trueString.length()); 00389 } 00390 else 00391 { 00392 (formatterListener.*function)(s_falseString.c_str(), s_falseString.length()); 00393 } 00394 } 00395 00401 static void 00402 string( 00403 double theNumber, 00404 XalanDOMString& theString) 00405 { 00406 DoubleToDOMString(theNumber, theString); 00407 } 00408 00409 static void 00410 string( 00411 double theNumber, 00412 FormatterListener& formatterListener, 00413 MemberFunctionPtr function) 00414 { 00415 DOMStringHelper::DoubleToCharacters(theNumber, formatterListener, function); 00416 } 00417 00423 static void 00424 string( 00425 const XalanNode& theNode, 00426 XalanDOMString& theString) 00427 { 00428 DOMServices::getNodeData(theNode, theString); 00429 } 00430 00431 static void 00432 string( 00433 const XalanNode& theNode, 00434 FormatterListener& formatterListener, 00435 MemberFunctionPtr function) 00436 { 00437 DOMServices::getNodeData(theNode, formatterListener, function); 00438 } 00439 00445 static void 00446 string( 00447 const NodeRefListBase& theNodeList, 00448 XalanDOMString& theString) 00449 { 00450 if (theNodeList.getLength() > 0) 00451 { 00452 assert(theNodeList.item(0) != 0); 00453 00454 string(*theNodeList.item(0), theString); 00455 } 00456 } 00457 00458 static void 00459 string( 00460 const NodeRefListBase& theNodeList, 00461 FormatterListener& formatterListener, 00462 MemberFunctionPtr function) 00463 { 00464 if (theNodeList.getLength() > 0) 00465 { 00466 assert(theNodeList.item(0) != 0); 00467 00468 DOMServices::getNodeData(*theNodeList.item(0), formatterListener, function); 00469 } 00470 } 00471 00477 static double 00478 number(bool theBoolean) 00479 { 00480 return theBoolean == true ? 1.0 : 0.0; 00481 } 00482 00483 static double 00484 number(const XalanDOMString& theString) 00485 { 00486 return DoubleSupport::toDouble(theString); 00487 } 00488 00494 static double 00495 number( 00496 XPathExecutionContext& executionContext, 00497 const NodeRefListBase& theNodeList); 00498 00504 static double 00505 number( 00506 XPathExecutionContext& executionContext, 00507 const XalanNode& theNode); 00508 00509 00510 // All XObject instances are controlled by an instance of an XObjectFactory. 00511 friend class XObjectFactory; 00512 00513 void 00514 setFactory(XObjectFactory* theFactory) 00515 { 00516 m_factory = theFactory; 00517 } 00518 00519 // Base class for all XObject exceptions... 00520 class XObjectException : public XalanXPathException 00521 { 00522 public: 00523 00524 explicit 00525 XObjectException( 00526 const XalanDOMString& message = XalanDOMString(), 00527 const XalanNode* styleNode = 0, 00528 const XalanDOMString& theType = XalanDOMString(XALAN_STATIC_UCODE_STRING("XObjectException"))); 00529 00530 virtual 00531 ~XObjectException(); 00532 }; 00533 00534 class XObjectInvalidConversionException : public XObjectException 00535 { 00536 public: 00537 00538 XObjectInvalidConversionException( 00539 const XalanDOMString& fromType, 00540 const XalanDOMString& toType); 00541 00542 virtual 00543 ~XObjectInvalidConversionException(); 00544 00545 const XalanDOMString& 00546 getFromType() const 00547 { 00548 return m_fromType; 00549 } 00550 00551 const XalanDOMString& 00552 getToType() const 00553 { 00554 return m_toType; 00555 } 00556 00557 private: 00558 00559 static const XalanDOMString 00560 formatErrorString( 00561 const XalanDOMString& fromType, 00562 const XalanDOMString& toType); 00563 00564 const XalanDOMString m_fromType; 00565 00566 const XalanDOMString m_toType; 00567 }; 00568 00569 protected: 00570 00576 virtual eObjectType 00577 getRealType() const; 00578 00579 virtual void 00580 referenced(); 00581 00582 virtual void 00583 dereferenced(); 00584 00585 virtual 00586 ~XObject(); 00587 00588 static const XalanDOMString s_nullString; 00589 00590 protected: 00591 00592 static XalanDOMString s_falseString; 00593 00594 static XalanDOMString s_trueString; 00595 00596 private: 00597 00598 // Not implemented... 00599 XObject& 00600 operator=(const XObject&); 00601 00602 const eObjectType m_objectType; 00603 00604 XObjectFactory* m_factory; 00605 }; 00606 00607 00608 00612 class XALAN_XPATH_EXPORT XObjectPtr 00613 { 00614 public: 00615 00616 friend bool operator==(const XObjectPtr&, const XObjectPtr&); 00617 friend bool operator<(const XObjectPtr&, const XObjectPtr&); 00618 00622 explicit 00623 XObjectPtr(XObject* theXObject = 0) : 00624 m_xobjectPtr(theXObject) 00625 { 00626 XalanReferenceCountedObject::addReference(theXObject); 00627 } 00628 00629 XObjectPtr(const XObjectPtr& theSource) : 00630 m_xobjectPtr(theSource.m_xobjectPtr) 00631 { 00632 XalanReferenceCountedObject::addReference(m_xobjectPtr); 00633 }; 00634 00635 XObjectPtr& 00636 operator=(const XObjectPtr& theRHS) 00637 { 00638 if (m_xobjectPtr != theRHS.m_xobjectPtr) 00639 { 00640 XalanReferenceCountedObject::removeReference(m_xobjectPtr); 00641 00642 m_xobjectPtr = theRHS.m_xobjectPtr; 00643 00644 XalanReferenceCountedObject::addReference(m_xobjectPtr); 00645 } 00646 00647 return *this; 00648 } 00649 00650 ~XObjectPtr() 00651 { 00652 XalanReferenceCountedObject::removeReference(m_xobjectPtr); 00653 }; 00654 00655 void 00656 release() 00657 { 00658 XObject* const xobjectPtr = m_xobjectPtr; 00659 00660 m_xobjectPtr = 0; 00661 00662 XalanReferenceCountedObject::removeReference(xobjectPtr); 00663 } 00664 00665 bool 00666 null() const 00667 { 00668 return m_xobjectPtr == 0 ? true : false; 00669 } 00670 00671 const XObject& 00672 operator*() const 00673 { 00674 return *m_xobjectPtr; 00675 }; 00676 00677 XObject& 00678 operator*() 00679 { 00680 return *m_xobjectPtr; 00681 }; 00682 00683 const XObject* 00684 operator->() const 00685 { 00686 return m_xobjectPtr; 00687 }; 00688 00689 XObject* 00690 operator->() 00691 { 00692 return m_xobjectPtr; 00693 }; 00694 00695 const XObject* 00696 get() const 00697 { 00698 return m_xobjectPtr; 00699 }; 00700 00701 XObject* 00702 get() 00703 { 00704 return m_xobjectPtr; 00705 }; 00706 00707 private: 00708 00709 XObject* m_xobjectPtr; 00710 }; 00711 00712 00713 00714 inline bool 00715 operator==( 00716 const XObjectPtr& theLHS, 00717 const XObjectPtr& theRHS) 00718 { 00719 return theLHS.m_xobjectPtr == theRHS.m_xobjectPtr; 00720 } 00721 00722 00723 00724 inline bool 00725 operator!=( 00726 const XObjectPtr& theLHS, 00727 const XObjectPtr& theRHS) 00728 { 00729 return !(theLHS == theRHS); 00730 } 00731 00732 00733 00734 inline bool 00735 operator<( 00736 const XObjectPtr& theLHS, 00737 const XObjectPtr& theRHS) 00738 { 00739 return theLHS.m_xobjectPtr < theRHS.m_xobjectPtr; 00740 } 00741 00742 00743 00744 XALAN_CPP_NAMESPACE_END 00745 00746 00747 00748 #endif // XOBJECT_HEADER_GUARD_1357924680
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