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ccff2d20ed
This patch converts the input functions for bool, int2, int4, int8, float4, float8, numeric, and contrib/cube to the new soft-error style. array_in and record_in are also converted. There's lots more to do, but this is enough to provide proof-of-concept that the soft-error API is usable, as well as reference examples for how to convert input functions. This patch is mostly by me, but it owes very substantial debt to earlier work by Nikita Glukhov, Andrew Dunstan, and Amul Sul. Thanks to Andres Freund for review. Discussion: https://postgr.es/m/3bbbb0df-7382-bf87-9737-340ba096e034@postgrespro.ru
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* contrib/cube/cubedata.h */
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/*
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* This limit is pretty arbitrary, but don't make it so large that you
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* risk overflow in sizing calculations.
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*/
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#define CUBE_MAX_DIM (100)
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typedef struct NDBOX
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{
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/* varlena header (do not touch directly!) */
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int32 vl_len_;
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/*----------
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* Header contains info about NDBOX. For binary compatibility with old
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* versions, it is defined as "unsigned int".
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*
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* Following information is stored:
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*
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* bits 0-7 : number of cube dimensions;
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* bits 8-30 : unused, initialize to zero;
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* bit 31 : point flag. If set, the upper right coordinates are not
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* stored, and are implicitly the same as the lower left
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* coordinates.
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*----------
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*/
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unsigned int header;
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/*
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* The lower left coordinates for each dimension come first, followed by
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* upper right coordinates unless the point flag is set.
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*/
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double x[FLEXIBLE_ARRAY_MEMBER];
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} NDBOX;
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/* NDBOX access macros */
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#define POINT_BIT 0x80000000
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#define DIM_MASK 0x7fffffff
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#define IS_POINT(cube) ( ((cube)->header & POINT_BIT) != 0 )
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#define SET_POINT_BIT(cube) ( (cube)->header |= POINT_BIT )
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#define DIM(cube) ( (cube)->header & DIM_MASK )
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#define SET_DIM(cube, _dim) ( (cube)->header = ((cube)->header & ~DIM_MASK) | (_dim) )
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#define LL_COORD(cube, i) ( (cube)->x[i] )
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#define UR_COORD(cube, i) ( IS_POINT(cube) ? (cube)->x[i] : (cube)->x[(i) + DIM(cube)] )
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#define POINT_SIZE(_dim) (offsetof(NDBOX, x) + sizeof(double)*(_dim))
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#define CUBE_SIZE(_dim) (offsetof(NDBOX, x) + sizeof(double)*(_dim)*2)
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/* fmgr interface macros */
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#define DatumGetNDBOXP(x) ((NDBOX *) PG_DETOAST_DATUM(x))
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#define PG_GETARG_NDBOX_P(x) DatumGetNDBOXP(PG_GETARG_DATUM(x))
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#define PG_RETURN_NDBOX_P(x) PG_RETURN_POINTER(x)
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/* GiST operator strategy numbers */
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#define CubeKNNDistanceCoord 15 /* ~> */
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#define CubeKNNDistanceTaxicab 16 /* <#> */
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#define CubeKNNDistanceEuclid 17 /* <-> */
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#define CubeKNNDistanceChebyshev 18 /* <=> */
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/* in cubescan.l */
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extern int cube_yylex(void);
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extern void cube_yyerror(NDBOX **result, Size scanbuflen,
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struct Node *escontext,
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const char *message);
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extern void cube_scanner_init(const char *str, Size *scanbuflen);
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extern void cube_scanner_finish(void);
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/* in cubeparse.y */
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extern int cube_yyparse(NDBOX **result, Size scanbuflen,
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struct Node *escontext);
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