1 files changed, 69 insertions, 0 deletions
diff --git a/contrib/cube/cubedata.h b/contrib/cube/cubedata.h
new file mode 100644
index 0000000..dbe7d4f
--- /dev/null
+++ b/contrib/cube/cubedata.h
@@ -0,0 +1,69 @@
+/* contrib/cube/cubedata.h */
+
+/*
+ * This limit is pretty arbitrary, but don't make it so large that you
+ * risk overflow in sizing calculations.
+ */
+#define CUBE_MAX_DIM (100)
+
+typedef struct NDBOX
+{
+	/* varlena header (do not touch directly!) */
+	int32		vl_len_;
+
+	/*----------
+	 * Header contains info about NDBOX. For binary compatibility with old
+	 * versions, it is defined as "unsigned int".
+	 *
+	 * Following information is stored:
+	 *
+	 *	bits 0-7  : number of cube dimensions;
+	 *	bits 8-30 : unused, initialize to zero;
+	 *	bit  31   : point flag. If set, the upper right coordinates are not
+	 *				stored, and are implicitly the same as the lower left
+	 *				coordinates.
+	 *----------
+	 */
+	unsigned int header;
+
+	/*
+	 * The lower left coordinates for each dimension come first, followed by
+	 * upper right coordinates unless the point flag is set.
+	 */
+	double		x[FLEXIBLE_ARRAY_MEMBER];
+} NDBOX;
+
+/* NDBOX access macros */
+#define POINT_BIT			0x80000000
+#define DIM_MASK			0x7fffffff
+
+#define IS_POINT(cube)		( ((cube)->header & POINT_BIT) != 0 )
+#define SET_POINT_BIT(cube) ( (cube)->header |= POINT_BIT )
+#define DIM(cube)			( (cube)->header & DIM_MASK )
+#define SET_DIM(cube, _dim) ( (cube)->header = ((cube)->header & ~DIM_MASK) | (_dim) )
+
+#define LL_COORD(cube, i) ( (cube)->x[i] )
+#define UR_COORD(cube, i) ( IS_POINT(cube) ? (cube)->x[i] : (cube)->x[(i) + DIM(cube)] )
+
+#define POINT_SIZE(_dim)	(offsetof(NDBOX, x) + sizeof(double)*(_dim))
+#define CUBE_SIZE(_dim)		(offsetof(NDBOX, x) + sizeof(double)*(_dim)*2)
+
+/* fmgr interface macros */
+#define DatumGetNDBOXP(x)	((NDBOX *) PG_DETOAST_DATUM(x))
+#define PG_GETARG_NDBOX_P(x)	DatumGetNDBOXP(PG_GETARG_DATUM(x))
+#define PG_RETURN_NDBOX_P(x)	PG_RETURN_POINTER(x)
+
+/* GiST operator strategy numbers */
+#define CubeKNNDistanceCoord			15	/* ~> */
+#define CubeKNNDistanceTaxicab			16	/* <#> */
+#define CubeKNNDistanceEuclid			17	/* <-> */
+#define CubeKNNDistanceChebyshev		18	/* <=> */
+
+/* in cubescan.l */
+extern int	cube_yylex(void);
+extern void cube_yyerror(NDBOX **result, const char *message) pg_attribute_noreturn();
+extern void cube_scanner_init(const char *str);
+extern void cube_scanner_finish(void);
+
+/* in cubeparse.y */
+extern int	cube_yyparse(NDBOX **result);