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#ifndef CUBETYPES_H
#define CUBETYPES_H

#include <stdbool.h>
#include <stdint.h>

#define NMOVES               55 /* Actually 55, but one is NULLMOVE */
#define NTRANS               48
#define NROTATIONS           24

/* Enums *********************************************************************/

typedef enum
center
{
	U_center, D_center,
	R_center, L_center,
	F_center, B_center
} Center;

typedef enum
corner
{
	UFR, UFL, UBL, UBR,
	DFR, DFL, DBL, DBR
} Corner;

typedef enum
edge
{
	UF, UL, UB, UR,
	DF, DL, DB, DR,
	FR, FL, BL, BR
} Edge;

typedef enum
move
{
	NULLMOVE,
	U, U2, U3, D, D2, D3,
	R, R2, R3, L, L2, L3,
	F, F2, F3, B, B2, B3,
	Uw, Uw2, Uw3, Dw, Dw2, Dw3,
	Rw, Rw2, Rw3, Lw, Lw2, Lw3,
	Fw, Fw2, Fw3, Bw, Bw2, Bw3,
	M, M2, M3,
	S, S2, S3,
	E, E2, E3,
	x, x2, x3,
	y, y2, y3,
	z, z2, z3,
} Move;

typedef enum
trans
{
	uf, ur, ub, ul,
	df, dr, db, dl,
	rf, rd, rb, ru,
	lf, ld, lb, lu,
	fu, fr, fd, fl,
	bu, br, bd, bl,
	uf_mirror, ur_mirror, ub_mirror, ul_mirror,
	df_mirror, dr_mirror, db_mirror, dl_mirror,
	rf_mirror, rd_mirror, rb_mirror, ru_mirror,
	lf_mirror, ld_mirror, lb_mirror, lu_mirror,
	fu_mirror, fr_mirror, fd_mirror, fl_mirror,
	bu_mirror, br_mirror, bd_mirror, bl_mirror,
} Trans;


/* Typedefs ******************************************************************/

typedef struct alg           Alg;
typedef struct alglist       AlgList;
typedef struct alglistnode   AlgListNode;
typedef struct block         Block;
typedef struct command       Command;
typedef struct commandargs   CommandArgs;
typedef struct coordinate    Coordinate;
typedef struct cube          Cube;
typedef struct cubearray     CubeArray;
typedef struct cubetarget    CubeTarget;
typedef struct dfsdata       DfsData;
typedef struct piecefilter   PieceFilter;
typedef struct prunedata     PruneData;
typedef struct solveoptions  SolveOptions;
typedef struct step          Step;
typedef struct symdata       SymData;

typedef Cube                 (*AntiIndexer)      (uint64_t);
typedef bool                 (*Checker)          (Cube);
typedef int                  (*Estimator)        (CubeTarget);
typedef bool                 (*Validator)        (Alg *);
typedef void                 (*Exec)             (CommandArgs *);
typedef uint64_t             (*Indexer)          (Cube);
typedef bool                 (*Moveset)          (Move);
typedef CommandArgs *        (*ArgParser)        (int, char **);
typedef Trans                (*TransDetector)    (Cube);


/* Structs *******************************************************************/

struct
alg
{
	Move *          move;
	bool *          inv;
	int             len;
	int             allocated;
};

struct
alglist
{
	AlgListNode *   first;
	AlgListNode *   last;
	int             len;
};

struct
alglistnode
{
	Alg *           alg;
	AlgListNode *   next;
};

struct
block
{
	bool            edge[12];
	bool            corner[8];
	bool            center[6];
};

struct
command
{
	char *          name;
	char *          usage;
	char *          description;
	ArgParser       parse_args;
	Exec            exec;
};

struct
commandargs
{
	bool            success;
	Alg *           scramble;
	SolveOptions *  opts;
	Step *          step;
	Command *       command; /* For help */
};

struct
coordinate
{
	Indexer         index;
	AntiIndexer     cube;
	uint64_t        max;
	int             ntrans;
	Trans *         trans;
};

struct
cube
{
	int             epose;
	int             eposs;
	int             eposm;
	int             eofb;
	int             eorl;
	int             eoud;
	int             cp;
	int             coud;
	int             cofb;
	int             corl;
	int             cpos;
};

struct
cubearray
{
	int *           ep;
	int *           eofb;
	int *           eorl;
	int *           eoud;
	int *           cp;
	int *           coud;
	int *           corl;
	int *           cofb;
	int *           cpos;
};

struct
cubetarget
{
	Cube            cube;
	int             target;
};

struct
dfsdata
{
	int             d;
	int             m;
	int             lb;
	bool            niss;
	Move            last1;
	Move            last2;
	AlgList *       sols;
	Alg *           current_alg;
	Move            sorted_moves[NMOVES];
	int             move_position[NMOVES];
};

struct
piecefilter
{
	bool            epose;
	bool            eposs;
	bool            eposm;
	bool            eofb;
	bool            eorl;
	bool            eoud;
	bool            cp;
	bool            coud;
	bool            cofb;
	bool            corl;
	bool            cpos;
};

struct
prunedata
{
	char *          filename;
	uint8_t *       ptable;
	bool            generated;
	uint64_t        n;
	Coordinate *    coord;
	Moveset         moveset;
};

struct
solveoptions
{
	int             min_moves;
	int             max_moves;
	int             max_solutions;
	bool            optimal_only;
	bool            can_niss;
	bool            verbose;
	bool            all;
	bool            print_number;
};

struct
step
{
	char *          shortname;
	char *          name;
	Estimator       estimate;
	Checker         ready;
	char *          ready_msg;
	Validator       is_valid;
	Moveset         moveset;
	Trans           pre_trans;
	TransDetector   detect;
};

struct
symdata
{
	char *          filename;
	bool            generated;
	Coordinate *    coord;
	Coordinate *    sym_coord;
	int             ntrans;
	Trans *         trans;
	uint64_t *      class;
	Cube *          rep;
	Trans *         transtorep;
};

#endif

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