mirror of
https://github.com/VectorCamp/vectorscan.git
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171 lines
7.3 KiB
C++
171 lines
7.3 KiB
C++
/*
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* Copyright (c) 2015, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file
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* \brief Visitor base class for working with the component tree.
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*/
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#ifndef CONSTCOMPONENTVISITOR_H
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#define CONSTCOMPONENTVISITOR_H
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namespace ue2 {
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class AsciiComponentClass;
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class Component;
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class ComponentAlternation;
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class ComponentAssertion;
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class ComponentAtomicGroup;
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class ComponentBackReference;
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class ComponentBoundary;
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class ComponentByte;
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class ComponentCondReference;
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class ComponentClass;
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class ComponentEmpty;
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class ComponentEUS;
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class ComponentRepeat;
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class ComponentSequence;
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class ComponentWordBoundary;
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class UTF8ComponentClass;
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/**
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* \brief Visitor base class for traversing an immutable component tree.
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*
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* Our approach to implementing the visitor pattern for traversing the
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* Component tree for a pattern. This version operates on an immutable tree;
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* use \ref ComponentVisitor if you need to make changes to components during
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* traversal.
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*/
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class ConstComponentVisitor {
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public:
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virtual ~ConstComponentVisitor();
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virtual void pre(const AsciiComponentClass &c) = 0;
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virtual void pre(const ComponentAlternation &c) = 0;
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virtual void pre(const ComponentAssertion &c) = 0;
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virtual void pre(const ComponentAtomicGroup &c) = 0;
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virtual void pre(const ComponentBackReference &c) = 0;
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virtual void pre(const ComponentBoundary &c) = 0;
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virtual void pre(const ComponentByte &c) = 0;
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virtual void pre(const ComponentCondReference &c) = 0;
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virtual void pre(const ComponentEmpty &c) = 0;
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virtual void pre(const ComponentEUS &c) = 0;
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virtual void pre(const ComponentRepeat &c) = 0;
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virtual void pre(const ComponentSequence &c) = 0;
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virtual void pre(const ComponentWordBoundary &c) = 0;
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virtual void pre(const UTF8ComponentClass &c) = 0;
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virtual void during(const AsciiComponentClass &c) = 0;
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virtual void during(const ComponentAlternation &c) = 0;
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virtual void during(const ComponentAssertion &c) = 0;
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virtual void during(const ComponentAtomicGroup &c) = 0;
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virtual void during(const ComponentBackReference &c) = 0;
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virtual void during(const ComponentBoundary &c) = 0;
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virtual void during(const ComponentByte &c) = 0;
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virtual void during(const ComponentCondReference &c) = 0;
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virtual void during(const ComponentEmpty &c) = 0;
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virtual void during(const ComponentEUS &c) = 0;
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virtual void during(const ComponentRepeat &c) = 0;
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virtual void during(const ComponentSequence &c) = 0;
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virtual void during(const ComponentWordBoundary &c) = 0;
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virtual void during(const UTF8ComponentClass &c) = 0;
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virtual void post(const AsciiComponentClass &c) = 0;
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virtual void post(const ComponentAlternation &c) = 0;
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virtual void post(const ComponentAssertion &c) = 0;
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virtual void post(const ComponentAtomicGroup &c) = 0;
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virtual void post(const ComponentBackReference &c) = 0;
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virtual void post(const ComponentBoundary &c) = 0;
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virtual void post(const ComponentByte &c) = 0;
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virtual void post(const ComponentCondReference &c) = 0;
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virtual void post(const ComponentEmpty &c) = 0;
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virtual void post(const ComponentEUS &c) = 0;
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virtual void post(const ComponentRepeat &c) = 0;
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virtual void post(const ComponentSequence &c) = 0;
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virtual void post(const ComponentWordBoundary &c) = 0;
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virtual void post(const UTF8ComponentClass &c) = 0;
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};
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/**
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* \brief Concrete subclass of ConstComponentVisitor with default behaviour,
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* allowing you to just implement the member functions you need.
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*/
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class DefaultConstComponentVisitor : public ConstComponentVisitor {
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public:
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DefaultConstComponentVisitor();
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~DefaultConstComponentVisitor() override;
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void pre(const AsciiComponentClass &c) override;
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void pre(const ComponentAlternation &c) override;
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void pre(const ComponentAssertion &c) override;
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void pre(const ComponentAtomicGroup &c) override;
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void pre(const ComponentBackReference &c) override;
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void pre(const ComponentBoundary &c) override;
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void pre(const ComponentByte &c) override;
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void pre(const ComponentCondReference &c) override;
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void pre(const ComponentEmpty &c) override;
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void pre(const ComponentEUS &c) override;
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void pre(const ComponentRepeat &c) override;
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void pre(const ComponentSequence &c) override;
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void pre(const ComponentWordBoundary &c) override;
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void pre(const UTF8ComponentClass &c) override;
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void during(const AsciiComponentClass &c) override;
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void during(const ComponentAlternation &c) override;
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void during(const ComponentAssertion &c) override;
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void during(const ComponentAtomicGroup &c) override;
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void during(const ComponentBackReference &c) override;
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void during(const ComponentBoundary &c) override;
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void during(const ComponentByte &c) override;
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void during(const ComponentCondReference &c) override;
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void during(const ComponentEmpty &c) override;
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void during(const ComponentEUS &c) override;
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void during(const ComponentRepeat &c) override;
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void during(const ComponentSequence &c) override;
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void during(const ComponentWordBoundary &c) override;
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void during(const UTF8ComponentClass &c) override;
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void post(const AsciiComponentClass &c) override;
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void post(const ComponentAlternation &c) override;
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void post(const ComponentAssertion &c) override;
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void post(const ComponentAtomicGroup &c) override;
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void post(const ComponentBackReference &c) override;
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void post(const ComponentBoundary &c) override;
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void post(const ComponentByte &c) override;
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void post(const ComponentCondReference &c) override;
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void post(const ComponentEmpty &c) override;
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void post(const ComponentEUS &c) override;
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void post(const ComponentRepeat &c) override;
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void post(const ComponentSequence &c) override;
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void post(const ComponentWordBoundary &c) override;
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void post(const UTF8ComponentClass &c) override;
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};
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} // namespace ue2
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#endif // CONSTCOMPONENTVISITOR_H
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