PostGIS  2.2.8dev-r@@SVN_REVISION@@

◆ lwgeom_parse_wkt()

int lwgeom_parse_wkt ( LWGEOM_PARSER_RESULT parser_result,
char *  wktstr,
int  parser_check_flags 
)

Parse a WKT geometry string into an LWGEOM structure.

Note that this process uses globals and is not re-entrant, so don't call it within itself (eg, from within other functions in lwin_wkt.c) or from a threaded program. Note that parser_result.wkinput picks up a reference to wktstr.

Definition at line 122 of file lwin_wkt_parse.c.

References struct_lwgeom_parser_result::errcode, struct_lwgeom_parser_result::errlocation, YYLTYPE::first_line, global_parser_result, YYLTYPE::last_column, YYLTYPE::last_line, LW_FAILURE, LW_SUCCESS, LWDEBUGF, lwgeom_parser_result_init(), struct_lwgeom_parser_result::message, struct_lwgeom_parser_result::parser_check_flags, parser_error_messages, PARSER_ERROR_OTHER, struct_lwgeom_parser_result::wkinput, wkt_lexer_close(), wkt_lexer_init(), wkt_yylex_destroy(), wkt_yylloc, and wkt_yyparse().

Referenced by cu_twkb_in(), cu_wkb_in(), cu_wkb_malformed_in(), cu_wkt_in(), geography_from_text(), geography_in(), lwgeom_from_text(), LWGEOM_from_text(), lwgeom_from_wkt(), LWGEOM_in(), and test_wkt_in_errlocation().

123 {
124  int parse_rv = 0;
125 
126  /* Clean up our global parser result. */
128  /* Work-around possible bug in GNU Bison 3.0.2 resulting in wkt_yylloc
129  * members not being initialized on yyparse() as documented here:
130  * https://www.gnu.org/software/bison/manual/html_node/Location-Type.html
131  * See discussion here:
132  * http://lists.osgeo.org/pipermail/postgis-devel/2014-September/024506.html
133  */
135  wkt_yylloc.first_column = wkt_yylloc.first_line = 1;
136 
137  /* Set the input text string, and parse checks. */
138  global_parser_result.wkinput = wktstr;
139  global_parser_result.parser_check_flags = parser_check_flags;
140 
141  wkt_lexer_init(wktstr); /* Lexer ready */
142  parse_rv = wkt_yyparse(); /* Run the parse */
143  LWDEBUGF(4,"wkt_yyparse returned %d", parse_rv);
144  wkt_lexer_close(); /* Clean up lexer */
145 
146  /* A non-zero parser return is an error. */
147  if ( parse_rv != 0 )
148  {
150  {
154  }
155 
156  LWDEBUGF(5, "error returned by wkt_yyparse() @ %d: [%d] '%s'",
160 
161  /* Copy the global values into the return pointer */
162  *parser_result = global_parser_result;
164  return LW_FAILURE;
165  }
166 
167  /* Copy the global value into the return pointer */
168  *parser_result = global_parser_result;
170  return LW_SUCCESS;
171 }
int first_line
int wkt_yylex_destroy(void)
#define LW_SUCCESS
Definition: liblwgeom.h:65
#define LW_FAILURE
Definition: liblwgeom.h:64
void wkt_lexer_init(char *str)
int last_column
YYLTYPE wkt_yylloc
void wkt_lexer_close(void)
const char * parser_error_messages[]
Definition: lwin_wkt.c:23
void lwgeom_parser_result_init(LWGEOM_PARSER_RESULT *parser_result)
Definition: lwin_wkt.c:865
LWGEOM_PARSER_RESULT global_parser_result
#define LWDEBUGF(level, msg,...)
Definition: lwgeom_log.h:55
int wkt_yyparse(void)
#define PARSER_ERROR_OTHER
Definition: liblwgeom.h:1901
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