ScriptNode.h

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#ifndef SCRIPTNODE_H_
#define SCRIPTNODE_H_

class DataValue;

class ScriptNode
{
public:

    virtual ~ScriptNode() {};

    virtual bool hasChildNodes() const = 0;

    virtual ScriptNode* getNamedNode( const Str& nodeName ) = 0;

    virtual ScriptNode* newChildNode( const Str& nodeName ) = 0;

    virtual ScriptNode* newChildFunction( const Str& functionName,
                                          const Str& functionBody, Logger& logger ) = 0;

    virtual int getNodeCount( const Str& nodeName ) const = 0;

    virtual ScriptNode* getIndexedNode( unsigned int index ) = 0;

    virtual ScriptNode* getParentNode() const = 0;

    virtual int getIndex() const = 0;

    virtual const Str& getName() const = 0;

    virtual bool readBool( bool& readTo ) const = 0;

    virtual bool readDouble( double& readTo ) const = 0;

    virtual bool readString( Str& readTo ) const = 0;

    virtual DataValue* asNewDataValue() = 0;

    virtual bool execute( FlexArray<DataReader*>& inputs, FlexArray<SettingReader*>& settings,
                          FlexArray<DataWriter*>& outputs, FlexArray<const Unit*>& outUnits,
                          Logger& logger ) = 0;

    virtual bool execute( FlexArray<DataReader*>& inputs, FlexArray<SettingReader*>& settings,
                          bool& boolOutput, Logger& logger ) = 0;

    virtual bool execute( Logger& logger ) = 0;

    virtual Str toString() const = 0;

protected:

    ScriptNode() {};

private:

    // Note that the copy constructor below is private and not given a body.
    // Any attempt to call it will return a compiler error.
    ScriptNode( const ScriptNode& old ); // disallow copy constructor

};

#endif /* SCRIPTNODE_H_ */