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785941cdc3
This improves on commit bbfd7edae5 by
making two simple changes:
* pg_attribute_noreturn now takes parentheses, ie pg_attribute_noreturn().
Likewise pg_attribute_unused(), pg_attribute_packed(). This reduces
pgindent's tendency to misformat declarations involving them.
* attributes are now always attached to function declarations, not
definitions. Previously some places were taking creative shortcuts,
which were not merely candidates for bad misformatting by pgindent
but often were outright wrong anyway. (It does little good to put a
noreturn annotation where callers can't see it.) In any case, if
we would like to believe that these macros can be used with non-gcc
compilers, we should avoid gratuitous variance in usage patterns.
I also went through and manually improved the formatting of a lot of
declarations, and got rid of excessively repetitive (and now obsolete
anyway) comments informing the reader what pg_attribute_printf is for.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/* contrib/cube/cubedata.h */
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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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#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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#define DatumGetNDBOX(x) ((NDBOX *) PG_DETOAST_DATUM(x))
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#define PG_GETARG_NDBOX(x) DatumGetNDBOX(PG_GETARG_DATUM(x))
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#define PG_RETURN_NDBOX(x) PG_RETURN_POINTER(x)
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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, const char *message) pg_attribute_noreturn();
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extern void cube_scanner_init(const char *str);
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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);
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