rippled/modules/ripple_app/main/ParameterTable.h

//------------------------------------------------------------------------------
/*
    Copyright (c) 2011-2013, OpenCoin, Inc.
*/
//==============================================================================

#ifndef RIPPLE_PARAMETERTABLE_H
#define RIPPLE_PARAMETERTABLE_H

class Parameter : public boost::enable_shared_from_this<Parameter>
{
    // abstract base class parameters are derived from
public:
    typedef boost::shared_ptr<Parameter> pointer;
    typedef const boost::shared_ptr<Parameter>& ref;

public:
    Parameter (Parameter::ref parent, const std::string& name) : mParent (parent), mName (name)
    {
        ;
    }
    virtual ~Parameter ()
    {
        ;
    }

    const std::string&  getName () const
    {
        return mName;
    }

    virtual Json::Value     getValue (int) const = 0;
    virtual bool            setValue (const Json::Value& value, Json::Value& error) = 0;

    Parameter::pointer      getShared ()
    {
        return shared_from_this ();
    }

private:
    pointer         mParent;
    std::string     mName;
};

class ParameterNode : public Parameter
{
public:
    ParameterNode (Parameter::ref parent, const std::string& name) : Parameter (parent, name)
    {
        ;
    }
    bool addChildNode (Parameter::ref node);

    bool setValue (const std::string& name, const Json::Value& value, Json::Value& error);
    bool addNode (const std::string& name, Parameter::ref node);

    virtual Json::Value     getValue (int) const;
    virtual bool            setValue (const Json::Value& value, Json::Value& error);

private:
    std::map<std::string, Parameter::pointer>   mChildren;
};

class ParameterString : public Parameter
{
public:
    ParameterString (Parameter::ref parent, const std::string& name, const std::string& value);
    virtual Json::Value     getValue (int) const;
    virtual bool            setValue (const Json::Value& value, Json::Value& error);

private:
    std::string     mValue;
};

class ParameterInt : public Parameter
{
public:
    ParameterInt (Parameter::ref parent, const std::string& name, int value);
    virtual Json::Value     getValue (int) const;
    virtual bool            setValue (const Json::Value& value, Json::Value& error);

private:
    int             mValue;
};

#endif