add ds9 crosshair parser

1 files changed, 55 insertions, 0 deletions

diff --git a/ds9/parsers/crosshairparser.tac b/ds9/parsers/crosshairparser.tac
new file mode 100644
index 0000000..fa16124
--- /dev/null
+++ b/ds9/parsers/crosshairparser.tac
@@ -0,0 +1,55 @@
+%{
+%}
+
+#include skyframe.tin
+#include coords.tin
+#include numeric.tin
+#include string.tin
+
+%start command
+
+%token LOCK_
+%token MATCH_
+%token NONE_
+
+%%
+
+#include skyframe.trl
+#include coords.trl
+#include numeric.trl
+
+command : crosshair 
+ | crosshair {yyclearin; YYACCEPT} STRING_
+ ;
+
+crosshair : MATCH_ match {MatchCrosshairCurrent $2}
+ | LOCK_ lock {CrosshairCmdLock $2}
+ | numeric numeric {CrosshairTo $1 $2 physical fk5}
+ | numeric numeric coordsys {CrosshairTo $1 $2 $3 fk5}
+ | numeric numeric wcssys {CrosshairTo $1 $2 $3 fk5}
+ | numeric numeric skyframe {CrosshairTo $1 $2 wcs $3}
+ | numeric numeric wcssys skyframe {CrosshairTo $1 $2 $3 $4}
+ | SEXSTR_ SEXSTR_ {CrosshairTo $1 $2 wcs fk5}
+ | SEXSTR_ SEXSTR_ wcssys {CrosshairTo $1 $2 $3 fk5}
+ | SEXSTR_ SEXSTR_ skyframe {CrosshairTo $1 $2 wcs $3}
+ | SEXSTR_ SEXSTR_ wcssys skyframe {CrosshairTo $1 $2 $3 $4}
+ ;
+
+match : coordsys {set _ $1}
+ | wcssys {set _ $1}
+ ;
+
+lock : coordsys {set _ $1}
+ | wcssys {set _ $1}
+ | NONE_  {set _ none}
+ ;
+
+%%
+
+proc crosshair::yyerror {msg} {
+     variable yycnt
+     variable yy_current_buffer
+     variable index_
+
+     ParserError $msg $yycnt $yy_current_buffer $index_
+}