//
// Copyright (c) ZeroC, Inc. All rights reserved.
//

#ifndef ICE_SLICED_DATA_H
#define ICE_SLICED_DATA_H

#include <Ice/SlicedDataF.h>
#include <Ice/GCObject.h>
#include <Ice/Value.h>

namespace Ice
{

/**
 * Encapsulates the details of a slice for an unknown class or exception type.
 * \headerfile Ice/Ice.h
 */
struct ICE_API SliceInfo
#ifndef ICE_CPP11_MAPPING
    : public ::IceUtil::Shared
#endif
{
    /**
     * The Slice type ID for this slice.
     */
    ::std::string typeId;

    /**
     * The Slice compact type ID for this slice.
     */
    int compactId;

    /**
     * The encoded bytes for this slice, including the leading size integer.
     */
    ::std::vector<Byte> bytes;

    /**
     * The class instances referenced by this slice.
     */
    ::std::vector<ValuePtr> instances;

    /**
     * Whether or not the slice contains optional members.
     */
    bool hasOptionalMembers;

    /**
     * Whether or not this is the last slice.
     */
    bool isLastSlice;
};

/**
 * Holds the slices of unknown types.
 * \headerfile Ice/Ice.h
 */
class ICE_API SlicedData
#ifndef ICE_CPP11_MAPPING
    : public ::IceUtil::Shared
#endif
{
public:

#ifndef ICE_CPP11_MAPPING
    virtual ~SlicedData();
#endif

    SlicedData(const SliceInfoSeq&);

    /** The slices of unknown types. */
    const SliceInfoSeq slices;

    /**
     * Clears the slices to break potential cyclic references.
     */
    void clear();

#ifndef ICE_CPP11_MAPPING
    /// \cond INTERNAL
    void _iceGcVisitMembers(IceInternal::GCVisitor&);
    /// \endcond
#endif

};

/**
 * Represents an instance of an unknown type.
 * \headerfile Ice/Ice.h
 */
class ICE_API UnknownSlicedValue :
#ifdef ICE_CPP11_MAPPING
    public Value
#else
    public IceInternal::GCObject
#endif
{
public:

    /**
     * Constructs the placeholder instance.
     * @param unknownTypeId The Slice type ID of the unknown value.
     */
    UnknownSlicedValue(const std::string& unknownTypeId);

#ifdef ICE_CPP11_MAPPING
    /**
     * Obtains the sliced data associated with this instance.
     * @return The sliced data if the value has a preserved-slice base class and has been sliced during
     * unmarshaling of the value, or nil otherwise.
     */
    virtual SlicedDataPtr ice_getSlicedData() const override;

    /**
     * Determine the Slice type ID associated with this instance.
     * @return The type ID supplied to the constructor.
     */
    virtual std::string ice_id() const override;

    /**
     * Clones this object.
     * @return A new instance.
     */
    std::shared_ptr<UnknownSlicedValue> ice_clone() const;

    /// \cond STREAM
    virtual void _iceWrite(::Ice::OutputStream*) const override;
    virtual void _iceRead(::Ice::InputStream*) override;
    /// \endcond

protected:

    /// \cond INTERNAL
    virtual std::shared_ptr<Value> _iceCloneImpl() const override;
    /// \endcond

#else

    /**
     * Obtains the sliced data associated with this instance.
     * @return The sliced data if the value has a preserved-slice base class and has been sliced during
     * unmarshaling of the value, or nil otherwise.
     */
    virtual SlicedDataPtr ice_getSlicedData() const;

    /**
     * Determine the Slice type ID associated with this instance.
     * @param current The current object for this invocation.
     * @return The type ID supplied to the constructor.
     */
    virtual const std::string& ice_id(const Current& current = Ice::emptyCurrent) const;

    /// \cond INTERNAL
    virtual void _iceGcVisitMembers(IceInternal::GCVisitor&);
    /// \endcond

    /// \cond STREAM
    virtual void _iceWrite(::Ice::OutputStream*) const;
    virtual void _iceRead(::Ice::InputStream*);
    /// \endcond
#endif

private:

    const std::string _unknownTypeId;
    SlicedDataPtr _slicedData;
};

}

#endif