| /* |
| * 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 "FunctionGenerateID.hpp" |
| |
| |
| |
| #include <xalanc/XalanDOM/XalanDocument.hpp> |
| |
| |
| |
| #include <xalanc/PlatformSupport/DOMStringHelper.hpp> |
| #include <xalanc/PlatformSupport/XalanMessageLoader.hpp> |
| |
| |
| |
| #include <xalanc/XPath/NodeRefListBase.hpp> |
| #include <xalanc/XPath/XObjectFactory.hpp> |
| |
| |
| |
| namespace XALAN_CPP_NAMESPACE { |
| |
| |
| |
| const XalanDOMString FunctionGenerateID::s_emptyString(XalanMemMgrs::getDummyMemMgr()); |
| |
| |
| |
| FunctionGenerateID::FunctionGenerateID() : |
| Function() |
| { |
| } |
| |
| |
| |
| FunctionGenerateID::~FunctionGenerateID() |
| { |
| } |
| |
| |
| |
| // Append the suffix to the provided string. |
| inline void |
| getSuffix( |
| const XalanNode* theNode, |
| XalanDOMString& theResult) |
| { |
| assert(theNode != 0); |
| |
| // We're assuming here that each node has an implementation with a |
| // unique address that we can convert into a string... |
| PointerToDOMString(theNode->getOwnerDocument(), theResult); |
| |
| theResult.append(1, XalanUnicode::charLetter_N); |
| |
| PointerToDOMString(theNode, theResult); |
| } |
| |
| |
| |
| XObjectPtr |
| FunctionGenerateID::execute( |
| XPathExecutionContext& executionContext, |
| XalanNode* context, |
| const Locator* locator) const |
| { |
| if (context == 0) |
| { |
| const GetCachedString theGuard(executionContext); |
| |
| executionContext.problem( |
| XPathExecutionContext::eXPath, |
| XPathExecutionContext::eError, |
| XalanMessageLoader::getMessage( |
| theGuard.get(), |
| XalanMessages::FunctionRequiresNonNullContextNode_1Param, |
| "generate-id()"), |
| locator, |
| context); |
| |
| return XObjectPtr(); |
| } |
| else |
| { |
| GetCachedString theID(executionContext); |
| |
| theID.get() = XalanUnicode::charLetter_N; |
| |
| getSuffix(context, theID.get()); |
| |
| return executionContext.getXObjectFactory().createString(theID); |
| } |
| } |
| |
| |
| |
| XObjectPtr |
| FunctionGenerateID::execute( |
| XPathExecutionContext& executionContext, |
| XalanNode* /* context */, |
| const XObjectPtr arg1, |
| const Locator* locator) const |
| { |
| assert(arg1.null() == false); |
| |
| const NodeRefListBase& theNodeList = arg1->nodeset(); |
| |
| if (theNodeList.getLength() == 0) |
| { |
| return executionContext.getXObjectFactory().createStringReference(s_emptyString); |
| } |
| else |
| { |
| return execute(executionContext, theNodeList.item(0), locator); |
| } |
| } |
| |
| |
| |
| FunctionGenerateID* |
| FunctionGenerateID::clone(MemoryManager& theManager) const |
| { |
| return XalanCopyConstruct(theManager, *this); |
| } |
| |
| |
| |
| const XalanDOMString& |
| FunctionGenerateID::getError(XalanDOMString& theResult) const |
| { |
| return XalanMessageLoader::getMessage( |
| theResult, |
| XalanMessages::FunctionTakesZeroOrOneArg_1Param, |
| "generate-id"); |
| } |
| |
| |
| |
| } |