Formatter.h

/*
 * Copyright (C) 2020-2026 by 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_JSONRPC_FORMATTER_H
#define PT_JSONRPC_FORMATTER_H
 
#include <Pt/JsonRpc/Api.h>
#include <Pt/Composer.h>
#include <Pt/Formatter.h>
#include <Pt/NonCopyable.h>
#include <Pt/Types.h>
#include <stack>
 
namespace Pt {
 
namespace Json {
    class JsonWriter;
    class Node;
}
 
namespace JsonRpc {

class PT_JSONRPC_API Formatter : public Pt::Formatter
                               , private NonCopyable
{
  public:
    Formatter();

    explicit Formatter(Json::JsonWriter& writer);

    ~Formatter();

    void attach(Json::JsonWriter& writer);

    void detach();

    Json::JsonWriter* writer()
    { return _writer; }

    bool advance(const Json::Node& node);
 
  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& composer);
 
    bool onParseSome();
 
    void onParse();
 
  private:
    void onBeginNode(const Json::Node& node);

    void onArrayNode(const Json::Node& node);

    void onObjectNode(const Json::Node& node);
 
  private:
    Json::JsonWriter* _writer;
 
    typedef void (Formatter::*ProcessNode)(const Json::Node&);
    ProcessNode             _parse;
    std::stack<ProcessNode> _parseStack;
 
    Composer* _composer;
};
 
} // namespace JsonRpc
 
} // namespace Pt
 
#endif // PT_JSONRPC_FORMATTER_H