PostGIS  2.1.10dev-r@@SVN_REVISION@@
LWGEOM* wkt_parser_linestring_new ( POINTARRAY pa,
char *  dimensionality 

Create a new linestring.

Null point array implies empty. Null dimensionality implies no specified dimensionality in the WKT. Check for numpoints >= 2 if requested.

Definition at line 327 of file lwin_wkt.c.

References FLAGS_GET_M, FLAGS_GET_Z, global_parser_result, LW_FALSE, LW_PARSER_CHECK_MINPOINTS, LWDEBUG, lwline_as_lwgeom(), lwline_construct(), lwline_construct_empty(), POINTARRAY::npoints, struct_lwgeom_parser_result::parser_check_flags, PARSER_ERROR_MIXDIMS, PARSER_ERROR_MOREPOINTS, ptarray_free(), SET_PARSER_ERROR, SRID_UNKNOWN, wkt_dimensionality(), and wkt_pointarray_dimensionality().

Referenced by yyparse().

328 {
329  uint8_t flags = wkt_dimensionality(dimensionality);
330  LWDEBUG(4,"entered");
332  /* No pointarray means it is empty */
333  if( ! pa )
336  /* If the number of dimensions is not consistent, we have a problem. */
337  if( wkt_pointarray_dimensionality(pa, flags) == LW_FALSE )
338  {
339  ptarray_free(pa);
341  return NULL;
342  }
344  /* Apply check for not enough points, if requested. */
346  {
347  ptarray_free(pa);
349  return NULL;
350  }
353 }
LWLINE * lwline_construct_empty(int srid, char hasz, char hasm)
Definition: lwline.c:51
int npoints
Definition: liblwgeom.h:327
Parser check flags.
Definition: liblwgeom.h:1701
void ptarray_free(POINTARRAY *pa)
Definition: ptarray.c:315
#define LWDEBUG(level, msg)
Definition: lwgeom_log.h:50
LWGEOM_PARSER_RESULT global_parser_result
Definition: liblwgeom.h:1732
LWGEOM * lwline_as_lwgeom(const LWLINE *obj)
Definition: lwgeom.c:249
#define LW_FALSE
Definition: liblwgeom.h:52
LWLINE * lwline_construct(int srid, GBOX *bbox, POINTARRAY *points)
Definition: lwline.c:29
static uint8_t wkt_dimensionality(char *dimensionality)
Definition: lwin_wkt.c:61
Unknown SRID value.
Definition: liblwgeom.h:154
Definition: liblwgeom.h:1729
#define FLAGS_GET_Z(flags)
Macros for manipulating the 'flags' byte.
Definition: liblwgeom.h:106
#define SET_PARSER_ERROR(errno)
Definition: lwin_wkt.c:38
#define FLAGS_GET_M(flags)
Definition: liblwgeom.h:107
static int wkt_pointarray_dimensionality(POINTARRAY *pa, uint8_t flags)
Read the dimensionality from a flag, if provided.
Definition: lwin_wkt.c:156

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