| /* |
| * 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. |
| */ |
| #if !defined(XALANLOCATOR_HEADER_GUARD_1357924680) |
| #define XALANLOCATOR_HEADER_GUARD_1357924680 |
| |
| |
| |
| // Base include file. Must be first. |
| #include <xalanc/PlatformSupport/PlatformSupportDefinitions.hpp> |
| |
| |
| |
| #include <xercesc/sax/Locator.hpp> |
| |
| |
| |
| namespace XALAN_CPP_NAMESPACE { |
| |
| |
| |
| using xercesc::Locator; |
| |
| |
| |
| /** |
| * This class defines a base class for Locator derivations in Xalan. It was defined |
| * because Xerces made changes in their Locator class which caused turbulence. |
| */ |
| class XALAN_PLATFORMSUPPORT_EXPORT XalanLocator : public Locator |
| { |
| public: |
| |
| typedef Locator ParentType; |
| |
| XalanLocator() {} |
| |
| virtual |
| ~XalanLocator() {} |
| |
| virtual const XMLCh* |
| getPublicId() const = 0; |
| |
| virtual const XMLCh* |
| getSystemId() const = 0; |
| |
| virtual XalanFileLoc |
| getLineNumber() const = 0; |
| |
| virtual XalanFileLoc |
| getColumnNumber() const = 0; |
| |
| /** |
| * Get the public identifier from a locator object. |
| * @param theLocator A locator object inherited from Xerces. |
| * @param theAlternateId A default name for a public identifier. |
| * @return a null terminated XalanDOMChar string. |
| */ |
| static const XalanDOMChar* |
| getPublicId( |
| const Locator* theLocator, |
| const XalanDOMChar* theAlternateId = getEmptyPtr()) |
| { |
| return theLocator == 0 ? theAlternateId : (theLocator->getPublicId() ? |
| theLocator->getPublicId() : theAlternateId); |
| } |
| |
| /** |
| * Get the system identifier from a locator object. |
| * @param theLocator A locator object inherited from Xerces. |
| * @param theAlternateId A default name for a public identifier. |
| * @return a null terminated XalanDOMChar string. |
| */ |
| static const XalanDOMChar* |
| getSystemId( |
| const Locator* theLocator, |
| const XalanDOMChar* theAlternateId = getEmptyPtr()) |
| { |
| return theLocator == 0 ? theAlternateId : (theLocator->getSystemId() ? |
| theLocator->getSystemId() : theAlternateId); |
| } |
| |
| /** |
| * Get the line number from a locator object. |
| */ |
| static XalanFileLoc |
| getLineNumber(const ParentType* theLocator) |
| { |
| return theLocator == 0 ? getUnknownValue() : theLocator->getLineNumber(); |
| } |
| |
| /** |
| * Get the column number from a locator object. |
| */ |
| static XalanFileLoc |
| getColumnNumber(const ParentType* theLocator) |
| { |
| return theLocator == 0 ? getUnknownValue() : theLocator->getColumnNumber(); |
| } |
| |
| static XalanFileLoc |
| getUnknownValue() |
| { |
| // The parser reports the maximum value of the XalanFileLoc |
| // type for an unknown value. |
| return ~static_cast<XalanFileLoc>(0); |
| } |
| |
| static XalanFileLoc |
| getUnknownDisplayValue() |
| { |
| // The parser reports the maximum value of the XalanFileLoc |
| // type for an unknown value, but that is really non-sensical |
| // for display purposes, so we use 0 instead. |
| return static_cast<XalanFileLoc>(0); |
| } |
| |
| static bool |
| isUnknownValue(XalanFileLoc theLocation) |
| { |
| return theLocation == getUnknownValue(); |
| } |
| |
| private: |
| |
| // Not defined... |
| XalanLocator(const XalanLocator&); |
| |
| XalanLocator& |
| operator=(const XalanLocator&); |
| |
| /** |
| * Return static pointer to null XalanDOMChar. |
| * This is crafted to overcome issues with compilers/linkers that |
| * have problems initializing static integer members within a class. |
| * |
| * Replaces: static const int s_zero = 0; |
| * Reference: &s_zero; |
| */ |
| static const XalanDOMChar * getEmptyPtr() |
| { |
| static const XalanDOMChar theZero = 0; |
| static const XalanDOMChar * theEmpty = &theZero; |
| return theEmpty; |
| } |
| }; |
| |
| } |
| |
| |
| |
| #endif // PREFIXRESOLVER_HEADER_GUARD_1357924680 |