| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include "ElemVariable.hpp" |
| |
| |
| |
| #include <xercesc/sax/AttributeList.hpp> |
| |
| |
| |
| #include <xalanc/PlatformSupport/DOMStringHelper.hpp> |
| #include <xalanc/PlatformSupport/XalanMessageLoader.hpp> |
| |
| |
| |
| #include <xalanc/XPath/XObjectFactory.hpp> |
| #include <xalanc/XPath/XPath.hpp> |
| |
| |
| |
| #include "SelectionEvent.hpp" |
| #include "Stylesheet.hpp" |
| #include "StylesheetConstructionContext.hpp" |
| #include "StylesheetExecutionContext.hpp" |
| |
| |
| |
| namespace XALAN_CPP_NAMESPACE { |
| |
| |
| |
| ElemVariable::ElemVariable( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& stylesheetTree, |
| const AttributeListType& atts, |
| XalanFileLoc lineNumber, |
| XalanFileLoc columnNumber) : |
| ParentType( |
| constructionContext, |
| stylesheetTree, |
| lineNumber, |
| columnNumber, |
| StylesheetConstructionContext::ELEMNAME_VARIABLE), |
| m_qname(0), |
| m_selectPattern(0), |
| m_isTopLevel(false), |
| m_value(0), |
| m_varContext(0) |
| { |
| init(constructionContext, stylesheetTree, atts); |
| } |
| |
| |
| |
| ElemVariable::ElemVariable( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& stylesheetTree, |
| const AttributeListType& atts, |
| XalanFileLoc lineNumber, |
| XalanFileLoc columnNumber, |
| int xslToken) : |
| ParentType( |
| constructionContext, |
| stylesheetTree, |
| lineNumber, |
| columnNumber, |
| xslToken), |
| m_qname(0), |
| m_selectPattern(0), |
| m_isTopLevel(false), |
| m_value(0), |
| m_varContext(0) |
| { |
| init(constructionContext, stylesheetTree, atts); |
| } |
| |
| |
| |
| ElemVariable::~ElemVariable() |
| { |
| } |
| |
| |
| |
| void |
| ElemVariable::init( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& stylesheetTree, |
| const AttributeListType& atts) |
| { |
| const XalanSize_t nAttrs = atts.getLength(); |
| |
| for (XalanSize_t i = 0; i < nAttrs; i++) |
| { |
| const XalanDOMChar* const aname = atts.getName(i); |
| |
| if (equals(aname, Constants::ATTRNAME_SELECT)) |
| { |
| m_selectPattern = constructionContext.createXPath(getLocator(), atts.getValue(i), *this); |
| } |
| else if (equals(aname, Constants::ATTRNAME_NAME)) |
| { |
| m_qname = constructionContext.createXalanQName( |
| atts.getValue(i), |
| stylesheetTree.getNamespaces(), |
| getLocator()); |
| |
| if (m_qname->isValid() == false) |
| { |
| error( |
| constructionContext, |
| XalanMessages::AttributeValueNotValidQName_2Param, |
| Constants::ATTRNAME_NAME.c_str(), |
| atts.getValue(i)); |
| } |
| } |
| else if (isAttrOK( |
| aname, |
| atts, |
| i, |
| constructionContext) == false && |
| processSpaceAttr( |
| Constants::ELEMNAME_VARIABLE_WITH_PREFIX_STRING.c_str(), |
| aname, |
| atts, |
| i, |
| constructionContext) == false) |
| { |
| error( |
| constructionContext, |
| XalanMessages::ElementHasIllegalAttribute_2Param, |
| Constants::ELEMNAME_VARIABLE_WITH_PREFIX_STRING.c_str(), |
| aname); |
| } |
| } |
| |
| if (m_qname == 0) |
| { |
| error( |
| constructionContext, |
| XalanMessages::ElementMustHaveAttribute_2Param, |
| Constants::ELEMNAME_VARIABLE_WITH_PREFIX_STRING, |
| Constants::ATTRNAME_NAME); |
| } |
| } |
| |
| |
| |
| const XalanQName& |
| ElemVariable::getNameAttribute() const |
| { |
| assert(m_qname != 0); |
| |
| return *m_qname; |
| } |
| |
| |
| |
| void |
| ElemVariable::addToStylesheet( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& theStylesheet) |
| { |
| // Processing a top-level element only... |
| if (&theStylesheet != &getStylesheet()) |
| { |
| error( |
| constructionContext, |
| XalanMessages::ElemVariableInstanceAddedToWrongStylesheet); |
| } |
| else if (getParentNodeElem() != 0) |
| { |
| error( |
| constructionContext, |
| XalanMessages::ElemVariableInstanceIsAlreadyParented); |
| } |
| else |
| { |
| theStylesheet.setTopLevelVariable(this); |
| |
| m_isTopLevel = true; |
| } |
| } |
| |
| |
| |
| const XalanDOMString& |
| ElemVariable::getElementName() const |
| { |
| return Constants::ELEMNAME_VARIABLE_WITH_PREFIX_STRING; |
| } |
| |
| |
| |
| void |
| ElemVariable::setParentNodeElem(ElemTemplateElement* theParent) |
| { |
| if (m_isTopLevel == true) |
| { |
| throw XalanDOMException(XalanDOMException::HIERARCHY_REQUEST_ERR); |
| } |
| else |
| { |
| ParentType::setParentNodeElem(theParent); |
| } |
| } |
| |
| |
| |
| #if !defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION) |
| const ElemTemplateElement* |
| ElemVariable::startElement(StylesheetExecutionContext& executionContext) const |
| { |
| assert(m_qname != 0); |
| |
| ParentType::startElement(executionContext); |
| |
| XObjectPtr theValue; |
| |
| if (m_selectPattern == 0) |
| { |
| if (getFirstChildElem() == 0) |
| { |
| theValue = executionContext.getXObjectFactory().createStringReference(s_emptyString); |
| } |
| else |
| { |
| executionContext.beginCreateXResultTreeFrag(executionContext.getCurrentNode()); |
| return beginExecuteChildren(executionContext); |
| } |
| } |
| else |
| { |
| theValue = m_selectPattern->execute(*this, executionContext); |
| |
| if (0 != executionContext.getTraceListeners()) |
| { |
| executionContext.fireSelectEvent( |
| SelectionEvent( |
| executionContext, |
| executionContext.getCurrentNode(), |
| *this, |
| XalanDOMString("select", executionContext.getMemoryManager()), |
| *m_selectPattern, |
| theValue)); |
| } |
| |
| } |
| |
| if (theValue.null() == false) |
| { |
| executionContext.pushVariable( |
| *m_qname, |
| theValue, |
| getParentNodeElem()); |
| } |
| else |
| { |
| executionContext.pushVariable( |
| *m_qname, |
| this, |
| getParentNodeElem()); |
| } |
| |
| return 0; |
| } |
| |
| |
| void |
| ElemVariable::endElement(StylesheetExecutionContext& executionContext) const |
| { |
| if (0 == m_selectPattern && 0 != getFirstChildElem()) |
| { |
| endExecuteChildren(executionContext); |
| |
| executionContext.pushVariable( |
| *m_qname, |
| executionContext.endCreateXResultTreeFrag(), |
| getParentNodeElem()); |
| } |
| } |
| |
| |
| |
| #else |
| void |
| ElemVariable::execute(StylesheetExecutionContext& executionContext) const |
| { |
| assert(m_qname != 0); |
| |
| ParentType::execute(executionContext); |
| |
| const XObjectPtr theValue(getValue(executionContext, executionContext.getCurrentNode())); |
| |
| if (theValue.null() == false) |
| { |
| executionContext.pushVariable( |
| *m_qname, |
| theValue, |
| getParentNodeElem()); |
| } |
| else |
| { |
| executionContext.pushVariable( |
| *m_qname, |
| this, |
| getParentNodeElem()); |
| } |
| } |
| #endif |
| |
| |
| |
| const XPath* |
| ElemVariable::getXPath(XalanSize_t index) const |
| { |
| return index == 0 ? m_selectPattern : 0; |
| } |
| |
| |
| |
| const XObjectPtr |
| ElemVariable::getValue( |
| StylesheetExecutionContext& executionContext, |
| XalanNode* sourceNode) const |
| { |
| if (m_selectPattern == 0) |
| { |
| if (getFirstChildElem() == 0) |
| { |
| return executionContext.getXObjectFactory().createStringReference(s_emptyString); |
| } |
| else |
| { |
| |
| #if !defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION) |
| executionContext.beginCreateXResultTreeFrag(sourceNode); |
| |
| executeChildren(executionContext); |
| |
| return executionContext.endCreateXResultTreeFrag(); |
| #else |
| return executionContext.createXResultTreeFrag(*this, sourceNode); |
| #endif |
| } |
| } |
| else |
| { |
| XObjectPtr theValue; |
| |
| XalanNode* const theCurrentNode = executionContext.getCurrentNode(); |
| |
| if (theCurrentNode == sourceNode) |
| { |
| theValue = m_selectPattern->execute(*this, executionContext); |
| } |
| else |
| { |
| const XPathExecutionContext::CurrentNodePushAndPop theCurrentNodePushAndPop(executionContext, sourceNode); |
| |
| theValue = m_selectPattern->execute(*this, executionContext); |
| } |
| |
| if (0 != executionContext.getTraceListeners()) |
| { |
| executionContext.fireSelectEvent( |
| SelectionEvent( |
| executionContext, |
| sourceNode, |
| *this, |
| XalanDOMString("select", executionContext.getMemoryManager()), |
| *m_selectPattern, |
| theValue)); |
| } |
| |
| return theValue; |
| } |
| } |
| |
| |
| |
| } |