00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 2000 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(XALAN_VARIABLESSTACK_HEADER_GUARD) 00058 #define XALAN_VARIABLESSTACK_HEADER_GUARD 00059 00060 00061 00062 // Base include file. Must be first. 00063 #include <XSLT/XSLTDefinitions.hpp> 00064 00065 00066 00067 #include <cassert> 00068 #include <vector> 00069 00070 00071 00072 #include <XPath/XalanQName.hpp> 00073 #include <XPath/XObject.hpp> 00074 00075 00076 00077 #include <XSLT/XSLTProcessorException.hpp> 00078 00079 00080 00081 class Arg; 00082 class ElemTemplateElement; 00083 class ElemVariable; 00084 class StylesheetExecutionContext; 00085 class XalanNode; 00086 00087 00088 00092 class XALAN_XSLT_EXPORT VariablesStack 00093 { 00094 public: 00095 00099 explicit 00100 VariablesStack(); 00101 00102 ~VariablesStack(); 00103 00104 00108 void 00109 reset(); 00110 00116 void 00117 pushElementFrame(const ElemTemplateElement* elem); 00118 00124 void 00125 popElementFrame(const ElemTemplateElement* elem); 00126 00134 void 00135 pushContextMarker(); 00136 00140 void 00141 popContextMarker(); 00142 00143 struct ParamsVectorEntry 00144 { 00145 ParamsVectorEntry() : 00146 m_qname(0), 00147 m_value(), 00148 m_variable(0) 00149 { 00150 } 00151 00152 ParamsVectorEntry( 00153 const XalanQName* qname, 00154 const XObjectPtr value) : 00155 m_qname(qname), 00156 m_value(value), 00157 m_variable(0) 00158 { 00159 } 00160 00161 ParamsVectorEntry( 00162 const XalanQName* qname, 00163 const ElemVariable* variable) : 00164 m_qname(qname), 00165 m_value(), 00166 m_variable(variable) 00167 { 00168 } 00169 00170 const XalanQName* m_qname; 00171 00172 XObjectPtr m_value; 00173 00174 const ElemVariable* m_variable; 00175 }; 00176 00177 #if defined(XALAN_NO_NAMESPACES) 00178 typedef vector<ParamsVectorEntry> ParamsVectorType; 00179 typedef vector<const ElemVariable*> RecursionGuardStackType; 00180 #else 00181 typedef std::vector<ParamsVectorEntry> ParamsVectorType; 00182 typedef std::vector<const ElemVariable*> RecursionGuardStackType; 00183 #endif 00184 00192 void 00193 pushParams( 00194 const ParamsVectorType& theParams, 00195 const ElemTemplateElement* targetTemplate); 00196 00207 const XObjectPtr 00208 getParamVariable( 00209 const XalanQName& qname, 00210 StylesheetExecutionContext& executionContext, 00211 bool& fNameFound) 00212 { 00213 return findXObject(qname, executionContext, true, false, fNameFound); 00214 } 00215 00227 const XObjectPtr 00228 getVariable( 00229 const XalanQName& qname, 00230 StylesheetExecutionContext& executionContext, 00231 bool& fNameFound) 00232 { 00233 return findXObject(qname, executionContext, false, true, fNameFound); 00234 } 00235 00245 void 00246 pushVariable( 00247 const XalanQName& name, 00248 const ElemVariable* var, 00249 const ElemTemplateElement* e); 00250 00260 void 00261 pushVariable( 00262 const XalanQName& name, 00263 const XObjectPtr& val, 00264 const ElemTemplateElement* e); 00265 00269 void 00270 start(); 00271 00275 void 00276 resetParams(); 00277 00281 void 00282 markGlobalStackFrame(); 00283 00287 void 00288 unmarkGlobalStackFrame(); 00289 00297 void 00298 setCurrentStackFrameIndex(int currentStackFrameIndex = -1) 00299 { 00300 if (currentStackFrameIndex == -1) 00301 m_currentStackFrameIndex = m_stack.size(); 00302 else 00303 m_currentStackFrameIndex = currentStackFrameIndex; 00304 } 00305 00312 int 00313 getCurrentStackFrameIndex() const 00314 { 00315 return m_currentStackFrameIndex; 00316 } 00317 00323 int 00324 getGlobalStackFrameIndex() const 00325 { 00326 return m_globalStackFrameIndex; 00327 } 00328 00329 class InvalidStackContextException : public XSLTProcessorException 00330 { 00331 public: 00332 00333 InvalidStackContextException(); 00334 00335 virtual 00336 ~InvalidStackContextException(); 00337 00338 private: 00339 00340 }; 00341 00342 class PushParamFunctor 00343 { 00344 public: 00345 00346 PushParamFunctor(VariablesStack& theVariablesStack) : 00347 m_variablesStack(theVariablesStack) 00348 { 00349 } 00350 00351 const void 00352 operator()(const ParamsVectorType::value_type& theEntry); 00353 00354 private: 00355 00356 VariablesStack& m_variablesStack; 00357 }; 00358 00359 class XALAN_XSLT_EXPORT StackEntry 00360 { 00361 public: 00362 00367 enum eType { eContextMarker, 00368 eVariable, 00369 eParam, 00370 eActiveParam, 00371 eElementFrameMarker, 00372 eNextValue }; 00373 00377 explicit 00378 StackEntry(); 00379 00383 StackEntry( 00384 const XalanQName* name, 00385 const XObjectPtr& val, 00386 bool isParam = false); 00387 00391 StackEntry( 00392 const XalanQName* name, 00393 const ElemVariable* var, 00394 bool isParam = false); 00395 00399 StackEntry(const ElemTemplateElement* elem); 00400 00401 00405 StackEntry(const StackEntry& theSource); 00406 00410 ~StackEntry(); 00411 00417 eType 00418 getType() const 00419 { 00420 return m_type; 00421 } 00422 00428 const XalanQName* 00429 getName() const 00430 { 00431 return m_qname; 00432 } 00433 00439 const XObjectPtr& 00440 getValue() const 00441 { 00442 return m_value; 00443 } 00444 00450 void 00451 setValue(const XObjectPtr& theValue) 00452 { 00453 m_value = theValue; 00454 } 00455 00461 const ElemVariable* 00462 getVariable() const 00463 { 00464 return m_variable; 00465 } 00466 00467 void 00468 activate(); 00469 00470 void 00471 deactivate(); 00472 00478 const ElemTemplateElement* 00479 getElement() const 00480 { 00481 return m_element; 00482 } 00483 00484 StackEntry& 00485 operator=(const StackEntry& theRHS); 00486 00487 bool 00488 operator==(const StackEntry& theRHS) const; 00489 00490 private: 00491 00492 // Data members... 00493 eType m_type; 00494 00495 const XalanQName* m_qname; 00496 00497 XObjectPtr m_value; 00498 00499 const ElemVariable* m_variable; 00500 00501 const ElemTemplateElement* m_element; 00502 }; 00503 00504 #if defined(XALAN_NO_NAMESPACES) 00505 typedef vector<StackEntry> VariableStackStackType; 00506 #else 00507 typedef std::vector<StackEntry> VariableStackStackType; 00508 #endif 00509 00510 enum { eDefaultStackSize = 100 }; 00511 00512 private: 00513 00521 bool 00522 elementFrameAlreadyPushed(const ElemTemplateElement* elem) const; 00523 00529 void 00530 push(const StackEntry& theEntry); 00531 00535 void 00536 pop(); 00537 00543 const StackEntry& 00544 back() const 00545 { 00546 assert(m_stack.empty() == false); 00547 00548 return m_stack.back(); 00549 } 00550 00551 friend class CommitPushElementFrame; 00552 friend class EnsurePop; 00553 friend class PushParamFunctor; 00554 friend class SetAndRestoreForceGlobalSearch; 00555 00556 const XObjectPtr 00557 findXObject( 00558 const XalanQName& name, 00559 StylesheetExecutionContext& executionContext, 00560 bool fIsParam, 00561 bool fSearchGlobalSpace, 00562 bool& fNameFound); 00563 00564 VariableStackStackType::size_type 00565 findEntry( 00566 const XalanQName& name, 00567 bool fIsParam, 00568 bool fSearchGlobalSpace); 00569 00570 00571 VariableStackStackType m_stack; 00572 00573 int m_globalStackFrameIndex; 00574 00575 bool m_globalStackFrameMarked; 00576 00582 unsigned int m_currentStackFrameIndex; 00583 00589 RecursionGuardStackType m_guardStack; 00590 }; 00591 00592 00593 00594 #endif // #if !defined(XALAN_VARIABLESSTACK_HEADER_GUARD)
Doxygen and GraphViz are used to generate this API documentation from the Xalan-C header files.
![]() |
Xalan-C++ XSLT Processor Version 1.4 |
|