JsonFormatter.h

/*
   Copyright (C) 2015-2023 by Dr. Marc Boris Duerner
  
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
   
   As a special exception, you may use this file as part of a free
   software library without restriction. Specifically, if other files
   instantiate templates or use macros or inline functions from this
   file, or you compile this file and link it with other files to
   produce an executable, this file does not by itself cause the
   resulting executable to be covered by the GNU General Public
   License. This exception does not however invalidate any other
   reasons why the executable file might be covered by the GNU Library
   General Public License.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
   
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
   MA 02110-1301 USA
*/
 
#ifndef PT_JSON_FORMATTER_H
#define PT_JSON_FORMATTER_H
 
#include <Pt/Json/Api.h>
#include <Pt/String.h>
#include <Pt/Formatter.h>
#include <Pt/NonCopyable.h>
 
#include <stack>
 
namespace Pt {
 
namespace Json {
 
class JsonReader;
class JsonWriter;
class Node;

class PT_JSON_API JsonFormatter : public Pt::Formatter
                                , private NonCopyable
{
    public:
        JsonFormatter();
        
        JsonFormatter(JsonReader& reader);

        JsonFormatter(JsonWriter& writer);

        ~JsonFormatter();

        void attach(JsonReader& reader);

        void attach(JsonWriter& writer);

        JsonReader* reader()
        { return _reader; }

        JsonWriter* writer()
        { return _writer; }

        void detach();
 
    protected:
        void onAddString(const char* name, const char* type,
                         const Pt::Char* value, const char* id);
 
        void onAddBool(const char* name, bool value, const char* id);
 
        void onAddChar(const char* name, const Pt::Char& value, const char* id);
 
        void onAddInt8(const char* name, Pt::int8_t value, const char* id);
 
        void onAddInt16(const char* name, Pt::int16_t value, const char* id);
 
        void onAddInt32(const char* name, Pt::int32_t value, const char* id);
 
        void onAddInt64(const char* name, Pt::int64_t value, const char* id);
 
        void onAddUInt8(const char* name, Pt::uint8_t value, const char* id);
 
        void onAddUInt16(const char* name, Pt::uint16_t value, const char* id);
 
        void onAddUInt32(const char* name, Pt::uint32_t value, const char* id);
 
        void onAddUInt64(const char* name, Pt::uint64_t value, const char* id);
 
        void onAddFloat(const char* name, float value, const char* id);
 
        void onAddDouble(const char* name, double value, const char* id);
 
        void onAddLongDouble(const char* name, long double value, const char* id);
 
        void onAddBinary(const char* name, const char* type,
                         const char* value, std::size_t length, const char* id);
 
        void onAddReference(const char* name, const char* id);
 
        void onBeginSequence(const char* name, const char* type, const char* id);
 
        virtual void onBeginElement();
 
        virtual void onFinishElement();
 
        void onFinishSequence();
 
        void onBeginStruct(const char* name, const char* type, const char* id);
 
        void onBeginMember(const char* name);
 
        void onFinishMember();
 
        void onFinishStruct();
 
    protected:
        void onBeginParse(Composer&);
 
        bool onParseSome();
 
        void onParse();
 
    protected:
        void OnBegin(const Node& node);

        void onArray(const Node& node);
        
        void onObject(const Node& node);
 
    private:
        JsonReader* _reader;

        JsonWriter* _writer;

        typedef void (JsonFormatter::*ProcessNode)(const Node&);

        ProcessNode             _parse;
        std::stack<ProcessNode> _parseStack;

        Composer* _composer;
};
 
} // namespace
 
} // namespace
 
#endif