117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
/*
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* Copyright (c) 2001-2008
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2008
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* Oracle. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Id: XQNav.hpp 659 2008-10-06 00:11:22Z jpcs $
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*/
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#ifndef _XQNav_HPP
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#define _XQNav_HPP
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#include <vector>
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#include <xqilla/framework/XQillaExport.hpp>
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#include <xqilla/ast/ASTNodeImpl.hpp>
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#include <xqilla/ast/XQStep.hpp>
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///this class calculates a node list based on a context
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class XQILLA_API XQNav : public ASTNodeImpl
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{
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public:
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class XQILLA_API StepInfo {
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public:
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StepInfo() : step(0) {}
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StepInfo(ASTNode *s) : step(s) {}
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ASTNode *step;
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};
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typedef std::vector<StepInfo,XQillaAllocator<StepInfo> > Steps;
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XQNav(XPath2MemoryManager* memMgr);
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XQNav(ASTNode *step, XPath2MemoryManager* memMgr);
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XQNav(const Steps &steps, bool sortAdded, XPath2MemoryManager* memMgr);
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virtual ~XQNav();
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/** Add a new NavigationStep to the sequence of navigation steps to
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be performed. This operation is used by parse tree classes to
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turn themselves into an optimised, reusable navigation. **/
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void addStep(const StepInfo &step);
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/** Add a new NavigationStep to the start of the sequence of
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navigation steps to be performed.**/
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void addStepFront(ASTNode* step);
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virtual Result createResult(DynamicContext* context, int flags=0) const;
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virtual ASTNode* staticResolution(StaticContext *context);
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virtual ASTNode *staticTypingImpl(StaticContext *context);
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const Steps &getSteps() const;
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bool getSortAdded() const { return _sortAdded; }
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void setSortAdded(bool value) { _sortAdded = value; }
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static unsigned int combineProperties(unsigned int prev_props, unsigned int step_props);
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protected:
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//list of steps to be performed.
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Steps _steps;
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bool _sortAdded;
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};
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class XQILLA_API NavStepResult : public ResultImpl
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{
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public:
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NavStepResult(const Result &parent, const ASTNode *step, size_t contextSize);
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Item::Ptr next(DynamicContext *context);
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private:
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Result parent_;
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const ASTNode *step_;
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Result stepResult_;
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size_t contextPos_;
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size_t contextSize_;
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Item::Ptr contextItem_;
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};
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class XQILLA_API IntermediateStepCheckResult : public ResultImpl
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{
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public:
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IntermediateStepCheckResult(const LocationInfo *o, const Result &parent);
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Item::Ptr next(DynamicContext *context);
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private:
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Result parent_;
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};
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class XQILLA_API LastStepCheckResult : public ResultImpl
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{
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public:
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LastStepCheckResult(const LocationInfo *o, const Result &parent);
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Item::Ptr next(DynamicContext *context);
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private:
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Result parent_;
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int _nTypeOfItemsInLastStep;
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};
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#endif
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