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|
%{
#include <stdio.h>
#include <string.h>
#include "postgres.h"
#include "utils/elog.h"
#include "sbuffer.h"
#define YYMALLOC palloc
#define YYFREE pfree
void sphere_yyerror(const char *str)
{
reset_buffer();
elog(ERROR, "parsing: %s", str);
}
static double human2dec(double d, double m, double s)
{
if (m < 0 || m >= 60 || s < 0 || s >= 60)
{
char err[255];
sprintf(err, "minutes or seconds invalid (min:%f sec:%f)", m, s);
sphere_yyerror(err);
return 0;
}
else
{
if (d < 0)
return (-s / 3600.0 - m / 60.0) + d;
else
return (s / 3600.0 + m / 60.0) + d;
}
}
%}
%token HOUR DEG MIN SEC COMMA
%token OPENCIRC CLOSECIRC OPENPOINT CLOSEPOINT
%token OPENARR CLOSEARR
%union {
int i;
double d;
char c[3];
}
%token <i> SIGN
%token <i> INT
%token <d> FLOAT
%token <c> EULERAXIS
%left COMMA
%type <d> number
%type <i> angle_lat
%type <i> angle_lat_us
%type <i> angle_long
%type <i> angle_long_us
%type <i> spherepoint
%type <i> spherepointlist
%type <i> spherepath
%%
commands:
/* empty */
| command
;
command:
spherepoint { set_spheretype( STYPE_POINT ); }
| spherecircle { set_spheretype( STYPE_CIRCLE ); }
| sphereline { set_spheretype( STYPE_LINE ); }
| eulertrans { set_spheretype( STYPE_EULER ); }
| spherepath { set_spheretype( STYPE_PATH ); }
| sphereellipse { set_spheretype( STYPE_ELLIPSE ); }
| spherebox { set_spheretype( STYPE_BOX ); }
;
/* unsigned number */
number :
FLOAT { $$ = $1; }
| INT { $$ = $1; }
;
/* unsigned longitude */
angle_lat_us :
number { $$ = set_angle(0, $1 ); }
| FLOAT DEG { $$ = set_angle(1, human2dec($1, 0, 0) ); }
| INT DEG { $$ = set_angle(1, human2dec($1, 0, 0) ); }
| INT DEG number { $$ = set_angle(1, human2dec($1, $3, 0) ); }
| INT DEG FLOAT MIN { $$ = set_angle(1, human2dec($1, $3, 0) ); }
| INT DEG INT MIN { $$ = set_angle(1, human2dec($1, $3, 0) ); }
| INT DEG INT MIN number { $$ = set_angle(1, human2dec($1, $3, $5) ); }
| INT DEG INT MIN number SEC { $$ = set_angle(1, human2dec($1, $3, $5) ); }
;
/* unsigned latitude */
angle_long_us :
number { $$ = set_angle(0, $1); }
| FLOAT DEG { $$ = set_angle(1, human2dec($1, 0, 0)); }
| INT DEG { $$ = set_angle(1, human2dec($1, 0, 0)); }
| INT DEG number { $$ = set_angle(1, human2dec($1, $3, 0)); }
| INT DEG FLOAT MIN { $$ = set_angle(1, human2dec($1, $3, 0)); }
| INT DEG INT MIN { $$ = set_angle(1, human2dec($1, $3, 0)); }
| INT DEG INT MIN number { $$ = set_angle(1, human2dec($1, $3, $5)); }
| INT DEG INT MIN number SEC { $$ = set_angle(1, human2dec($1, $3, $5)); }
| INT HOUR number { $$ = set_angle(1, 15 * human2dec($1, $3, 0)); }
| INT HOUR INT MIN number { $$ = set_angle(1, 15 * human2dec($1, $3, $5)); }
| INT HOUR INT MIN number SEC { $$ = set_angle(1, 15 * human2dec($1, $3, $5)); }
;
/* longitude */
angle_long :
angle_long_us { $$ = set_angle_sign($1, 1); }
| SIGN angle_long_us { $$ = set_angle_sign($2, $1); }
;
/* latitude */
angle_lat :
angle_lat_us { $$ = set_angle_sign($1, 1); }
| SIGN angle_lat_us { $$ = set_angle_sign($2, $1); }
;
/* spherical point */
spherepoint:
OPENPOINT angle_long COMMA angle_lat CLOSEPOINT
{
$$ = set_point($2, $4);
}
;
/* spherical circle */
spherecircle:
OPENCIRC spherepoint COMMA angle_lat_us CLOSECIRC
{
set_circle($2, $4);
}
;
/* Euler transformation */
eulertrans :
angle_long COMMA angle_long COMMA angle_long
{
set_euler($1, $3, $5, "ZXZ");
}
| angle_long COMMA angle_long COMMA angle_long COMMA EULERAXIS
{
set_euler($1, $3, $5, $7);
}
;
/* spherical line */
sphereline :
OPENPOINT eulertrans CLOSEPOINT COMMA angle_long_us
{
set_line ($5);
}
;
/* Path and polygons */
spherepointlist :
spherepoint COMMA
| spherepointlist spherepoint COMMA
;
spherepath :
OPENARR spherepointlist spherepoint CLOSEARR { }
;
/* ellipses */
sphereellipse:
OPENCIRC OPENARR angle_lat_us COMMA angle_lat_us CLOSEARR COMMA spherepoint COMMA angle_lat CLOSECIRC
{
set_ellipse($3, $5, $8, $10);
}
;
/* boxes */
spherebox:
OPENPOINT spherepoint COMMA spherepoint CLOSEPOINT { }
| spherepoint COMMA spherepoint { }
;
|
