| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed 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" |
| |
| |
| |
| XALAN_CPP_NAMESPACE_BEGIN |
| |
| |
| |
| ElemVariable::ElemVariable( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& stylesheetTree, |
| const AttributeListType& atts, |
| int lineNumber, |
| int 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, |
| int lineNumber, |
| int 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 unsigned int nAttrs = atts.getLength(); |
| |
| for(unsigned int 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) |
| { |
| constructionContext.error( |
| XalanMessageLoader::getMessage( |
| XalanMessages::AttributeValueNotValidQName_2Param, |
| Constants::ATTRNAME_NAME.c_str(), |
| atts.getValue(i)), |
| 0, |
| this); |
| } |
| } |
| else if(!(isAttrOK(aname, atts, i, constructionContext) || |
| processSpaceAttr(aname, atts, i, constructionContext))) |
| { |
| constructionContext.error( |
| XalanMessageLoader::getMessage( |
| XalanMessages::TemplateHasIllegalAttribute_2Param, |
| Constants::ELEMNAME_VARIABLE_WITH_PREFIX_STRING.c_str(), |
| aname), |
| 0, |
| this); |
| } |
| } |
| |
| if(m_qname == 0) |
| { |
| constructionContext.error( |
| XalanMessageLoader::getMessage( |
| XalanMessages::TemplateMustHaveAttribute_2Param, |
| Constants::ELEMNAME_VARIABLE_WITH_PREFIX_STRING, |
| Constants::ATTRNAME_NAME), |
| 0, |
| this); |
| } |
| } |
| |
| |
| |
| 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()) |
| { |
| constructionContext.error( |
| XalanMessageLoader::getMessage(XalanMessages::ElemVariableInstanceAddedToWrongStylesheet), |
| 0, |
| this); |
| } |
| else if (getParentNodeElem() != 0) |
| { |
| constructionContext.error( |
| XalanMessageLoader::getMessage(XalanMessages::ElemVariableInstanceIsAlreadyParented), |
| 0, |
| this); |
| } |
| 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, |
| StaticStringToDOMString(XALAN_STATIC_UCODE_STRING("select")), |
| *m_selectPattern, |
| theValue)); |
| } |
| |
| } |
| |
| assert(theValue.null() == false); |
| |
| executionContext.pushVariable( |
| *m_qname, |
| theValue, |
| 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(unsigned int 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, |
| StaticStringToDOMString(XALAN_STATIC_UCODE_STRING("select")), |
| *m_selectPattern, |
| theValue)); |
| } |
| |
| return theValue; |
| } |
| } |
| |
| |
| |
| XALAN_CPP_NAMESPACE_END |