mirror of https://github.com/axmolengine/axmol.git
111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
/****************************************************************************
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Copyright (c) 2013 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CCDATAVISITOR_H__
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#define __CCDATAVISITOR_H__
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#include "platform/CCPlatformMacros.h"
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#include <string>
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NS_CC_BEGIN
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class CCObject;
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class CCBool;
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class CCInteger;
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class CCFloat;
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class CCDouble;
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class CCString;
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class CCArray;
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class CCDictionary;
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class CCSet;
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/**
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* @addtogroup data_structures
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* @{
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*/
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/**
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* Visitor that helps to perform action that depends on polymorphic object type
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*
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* Use cases:
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* - data serialization,
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* - pretty printing of \a CCObject *
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* - safe value reading from \a CCArray, \a CCDictionary, \a CCSet
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*
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* Usage:
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* 1. subclass CCDataVisitor
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* 2. overload visit() methods for object that you need to handle
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* 3. handle other objects in \a visitObject()
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* 4. pass your visitor to \a CCObject::acceptVisitor()
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*/
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class CC_DLL CCDataVisitor
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{
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public:
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virtual ~CCDataVisitor() {}
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/** default method, called from non-overloaded methods and for unrecognized objects */
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virtual void visitObject(const CCObject *p) = 0;
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virtual void visit(const CCBool *p);
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virtual void visit(const CCInteger *p);
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virtual void visit(const CCFloat *p);
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virtual void visit(const CCDouble *p);
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virtual void visit(const CCString *p);
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virtual void visit(const CCArray *p);
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virtual void visit(const CCDictionary *p);
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virtual void visit(const CCSet *p);
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};
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class CC_DLL CCPrettyPrinter : public CCDataVisitor
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{
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public:
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CCPrettyPrinter(int indentLevel = 0);
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virtual void clear();
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virtual std::string getResult();
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virtual void visitObject(const CCObject *p);
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virtual void visit(const CCBool * p);
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virtual void visit(const CCInteger *p);
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virtual void visit(const CCFloat *p);
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virtual void visit(const CCDouble *p);
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virtual void visit(const CCString *p);
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virtual void visit(const CCArray *p);
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virtual void visit(const CCDictionary *p);
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virtual void visit(const CCSet *p);
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private:
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void setIndentLevel(int indentLevel);
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int _indentLevel;
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std::string _indentStr;
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std::string _result;
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};
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// end of data_structure group
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/// @}
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NS_CC_END
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#endif // __CCDATAVISITOR_H__
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