valueBuilder.h

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/*
 * Copyright information and license terms for this software can be
 * found in the file LICENSE that is included with the distribution
 */
#ifndef VALUEBUILDER_H
#define VALUEBUILDER_H

#include <map>

#include <pv/templateMeta.h>
#include <pv/pvIntrospect.h>
#include <pv/sharedVector.h>

namespace epics{namespace pvData{

class PVStructure;

class epicsShareClass ValueBuilder
{
public:
    explicit ValueBuilder(const std::string& id=std::string());
    explicit ValueBuilder(const PVStructure&);
    ~ValueBuilder();

    template<ScalarType ENUM>
    FORCE_INLINE ValueBuilder& add(const std::string& name, typename meta::arg_type<typename ScalarTypeTraits<ENUM>::type>::type V)
    {
        _add(name, ENUM, &V);
        return *this;
    }

    template<class T>
    FORCE_INLINE ValueBuilder& add(const std::string& name, const shared_vector<const T>& V)
    {
        _add(name, V);
        return *this;
    }

    FORCE_INLINE ValueBuilder& add(const std::string& name, const PVStructure& V) {
        _add(name, V);
        return *this;
    }

    ValueBuilder& addNested(const std::string& name, Type type=structure, const std::string& id = std::string());
    ValueBuilder& endNested();

    std::tr1::shared_ptr<PVStructure> buildPVStructure() const;

private:
    void _add(const std::string& name, ScalarType stype, const void *V);
    void _add(const std::string& name, const shared_vector<const void> &V);
    void _add(const std::string& name, const PVStructure& V);

    ValueBuilder(ValueBuilder*, const std::string &id = std::string());

    ValueBuilder * const parent;
    struct child;
    friend struct child;
    struct child_struct;
    friend struct child_struct;
    struct child_scalar_base;
    friend struct child_scalar_base;
    template <typename T> struct child_scalar;
    template <typename T> friend struct child_scalar;
    struct child_scalar_array;
    friend struct child_scalar_array;

    typedef std::map<std::string, child*> children_t;
    children_t children;
    std::string id;

    ValueBuilder(const ValueBuilder&);
    ValueBuilder& operator=(const ValueBuilder&);
};

}}// namespace epics::pvData

#endif // VALUEBUILDER_H