archiver.h

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#ifndef ARCHIVER_H_
#define ARCHIVER_H_

#include <cstddef>
#include <string>












class JsonReader {
public:

    JsonReader(const char* json);

    ~JsonReader();

    // Archive concept

    operator bool() const { return !mError; }

    JsonReader& StartObject();
    JsonReader& Member(const char* name);
    bool HasMember(const char* name) const;
    JsonReader& EndObject();

    JsonReader& StartArray(size_t* size = 0);
    JsonReader& EndArray();

    JsonReader& operator&(bool& b);
    JsonReader& operator&(unsigned& u);
    JsonReader& operator&(int& i);
    JsonReader& operator&(double& d);
    JsonReader& operator&(std::string& s);

    JsonReader& SetNull();

    static const bool IsReader = true;
    static const bool IsWriter = !IsReader;

private:
    JsonReader(const JsonReader&);
    JsonReader& operator=(const JsonReader&);

    void Next();

    // PIMPL
    void* mDocument;              
    void* mStack;                 
    bool mError;                  
};

class JsonWriter {
public:
    JsonWriter();

    ~JsonWriter();

    const char* GetString() const;

    // Archive concept

    operator bool() const { return true; }

    JsonWriter& StartObject();
    JsonWriter& Member(const char* name);
    bool HasMember(const char* name) const;
    JsonWriter& EndObject();

    JsonWriter& StartArray(size_t* size = 0);
    JsonWriter& EndArray();

    JsonWriter& operator&(bool& b);
    JsonWriter& operator&(unsigned& u);
    JsonWriter& operator&(int& i);
    JsonWriter& operator&(double& d);
    JsonWriter& operator&(std::string& s);
    JsonWriter& SetNull();

    static const bool IsReader = false;
    static const bool IsWriter = !IsReader;

private:
    JsonWriter(const JsonWriter&);
    JsonWriter& operator=(const JsonWriter&);

    // PIMPL idiom
    void* mWriter;      
    void* mStream;      
};

#endif // ARCHIVER_H__