From 96ec6fa281103609e8e2b70ff9311d78ada35a82 Mon Sep 17 00:00:00 2001
From: William Joye <wjoye@cfa.harvard.edu>
Date: Mon, 14 May 2018 17:18:44 -0400
Subject: add ds9 irafalign parser

---
 ds9/library/source.tcl          |  2 ++
 ds9/library/util.tcl            |  9 +++++++++
 ds9/parsers/irafalignlex.fcl    | 13 +++++++++++++
 ds9/parsers/irafalignparser.tac | 28 ++++++++++++++++++++++++++++
 4 files changed, 52 insertions(+)
 create mode 100644 ds9/parsers/irafalignlex.fcl
 create mode 100644 ds9/parsers/irafalignparser.tac

diff --git a/ds9/library/source.tcl b/ds9/library/source.tcl
index a249248..351c561 100644
--- a/ds9/library/source.tcl
+++ b/ds9/library/source.tcl
@@ -242,6 +242,8 @@ source $ds9(root)/library/iconifyparser.tcl
 source $ds9(root)/library/iconifylex.tcl
 source $ds9(root)/library/iisparser.tcl
 source $ds9(root)/library/iislex.tcl
+source $ds9(root)/library/irafalignparser.tcl
+source $ds9(root)/library/irafalignlex.tcl
 source $ds9(root)/library/lockparser.tcl
 source $ds9(root)/library/locklex.tcl
 source $ds9(root)/library/magnifierparser.tcl
diff --git a/ds9/library/util.tcl b/ds9/library/util.tcl
index f3f44d7..f2760cc 100644
--- a/ds9/library/util.tcl
+++ b/ds9/library/util.tcl
@@ -1376,10 +1376,19 @@ proc ProcessIRAFAlignCmd {varname iname} {
     upvar $varname var
     upvar $iname i
 
+    global debug
+    if {$debug(tcl,parser)} {
+	irafalign::YY_FLUSH_BUFFER
+	irafalign::yy_scan_string [lrange $var $i end]
+	irafalign::yyparse
+	incr i [expr $irafalign::yycnt-1]
+    } else {
+
     global pds9
     set pds9(iraf) [FromYesNo [lindex $var $i]]
     PrefsIRAFAlign
 }
+}
 
 proc ProcessSendIRAFAlignCmd {proc id param} {
     global pds9
diff --git a/ds9/parsers/irafalignlex.fcl b/ds9/parsers/irafalignlex.fcl
new file mode 100644
index 0000000..285abea
--- /dev/null
+++ b/ds9/parsers/irafalignlex.fcl
@@ -0,0 +1,13 @@
+#tab irafalignparser.tab.tcl
+
+%{
+%}
+
+#include defs.fin
+
+%%
+
+#include yesno.fin
+#include string.fin
+
+%%
diff --git a/ds9/parsers/irafalignparser.tac b/ds9/parsers/irafalignparser.tac
new file mode 100644
index 0000000..1a63dca
--- /dev/null
+++ b/ds9/parsers/irafalignparser.tac
@@ -0,0 +1,28 @@
+%{
+%}
+
+#include yesno.tin
+#include string.tin
+
+%start command
+
+%%
+
+#include yesno.trl
+
+command : irafalign 
+ | irafalign {yyclearin; YYACCEPT} STRING_
+ ;
+
+irafalign : yesno {Pds9CmdSet irafalign $1}
+ ;
+
+%%
+
+proc irafalign::yyerror {msg} {
+     variable yycnt
+     variable yy_current_buffer
+     variable index_
+
+     ParserError $msg $yycnt $yy_current_buffer $index_
+}
-- 
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