/*
 * OpenClonk, http://www.openclonk.org
 *
 * Copyright (c) 2001-2009, RedWolf Design GmbH, http://www.clonk.de/
 * Copyright (c) 2013-2016, The OpenClonk Team and contributors
 *
 * Distributed under the terms of the ISC license; see accompanying file
 * "COPYING" for details.
 *
 * "Clonk" is a registered trademark of Matthes Bender, used with permission.
 * See accompanying file "TRADEMARK" for details.
 *
 * To redistribute this file separately, substitute the full license texts
 * for the above references.
 */

#ifndef INC_C4ValueMap2
#define INC_C4ValueMap2

// implements a list of C4Values associated with a name list.
// the list is split in the two components (data/names) to make it possible
// to have multiple data lists using a single name list

class C4ValueMapNames;

// the data list
class C4ValueMapData
{
	friend class C4ValueMapNames;
public:

	// construction/destruction
	C4ValueMapData();
	C4ValueMapData(const C4ValueMapData &DataToCopy);
	virtual ~C4ValueMapData();
	C4ValueMapData& operator = (const C4ValueMapData &DataToCopy);

	bool operator == (const C4ValueMapData &Data) const;

	// data array
	C4Value *pData{nullptr};

	// pointer on name list
	C4ValueMapNames *pNames{nullptr};

	// using temporary name list?
	// (delete when changing list)
	bool bTempNameList{false};


	// returns the item specified or 0 if it doesn't exist
	C4Value *GetItem(const char* strName);
	C4Value *GetItem(int32_t iNr);


	// sets the name list
	void SetNameList(C4ValueMapNames *pnNames);

	// creates a new (empty) temporary name list for this data class
	C4ValueMapNames *CreateTempNameList();

	void Reset(); // resets content & unreg name list
	void ResetContent(); // resets content

	int32_t GetAnzItems();

	C4Value& operator [] (int32_t iNr) { return *GetItem(iNr); }
	C4Value& operator [] (const char *strName) { return *GetItem(strName); }

	void Denumerate(C4ValueNumbers *);

	void CompileFunc(StdCompiler *pComp, C4ValueNumbers *);

private:

	// a list linking all data lists using the same name list together.
	C4ValueMapData *pNext{nullptr};

	void Register(C4ValueMapNames *pnNames);
	void UnRegister();

	// called by names list to tell us that the name list
	// was changed and from SetNameList (the data list has to be rordered...)
	void OnNameListChanged(const char **pOldNames, int32_t iOldSize);

	// (Re)Allocs data list
	// old data will be deleted!
	// (size taken from pNames->iSize)
	void ReAllocList();
};

// the names list
class C4ValueMapNames
{
	friend class C4ValueMapData;
public:

	// construction/destruction
	C4ValueMapNames();
	C4ValueMapNames(const C4ValueMapNames& NamesToCopy);
	C4ValueMapNames& operator = (const C4ValueMapNames &NamesToCopy);
	virtual ~C4ValueMapNames();


	// name array
	char **pNames{nullptr};

	// item count
	int32_t iSize{0};


	// set name array
	void SetNameArray(const char **pnNames, int32_t nSize);

	// add a name; return index of added element (or index of current if it's already in the list)
	int32_t AddName(const char *pnName);

	// returns the nr of the given name
	// (= nr of value in "child" data lists)
	// returns -1 if no item with given name exists
	int32_t GetItemNr(const char *strName) const;

	// get name by index; awway bounds not checked
	const char *GetItemUnsafe(int32_t idx) const { return pNames[idx]; }

	void Reset();

private:

	// points to first data list using this name list
	C4ValueMapData *pFirst{nullptr};

	void Register(C4ValueMapData *pData);
	void UnRegister(C4ValueMapData *pData);

	// changes the name list
	void ChangeNameList(const char **pnNames, int32_t nSize);
};

#endif