From 991a130b1e71b3b849b3640264f8834d6e13da22 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Mon, 25 Jul 2005 15:05:34 +0000
Subject: * Added a list concatenation operator:     [1 2 3] ++ [4 5 6] => [1 2
 3 4 5 6]

---
 src/libexpr/parser.y | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/libexpr/parser.y')

diff --git a/src/libexpr/parser.y b/src/libexpr/parser.y
index 1f204a228009..23f1965ecd64 100644
--- a/src/libexpr/parser.y
+++ b/src/libexpr/parser.y
@@ -64,6 +64,7 @@ static Pos makeCurPos(YYLTYPE * loc, void * data)
 %right UPDATE
 %left NEG
 %left '+'
+%left CONCAT
 %nonassoc '?'
 %nonassoc '~'
 
@@ -102,6 +103,7 @@ expr_op
   | expr_op '~' expr_op { $$ = makeSubPath($1, $3); }
   | expr_op '?' ID { $$ = makeOpHasAttr($1, $3); }
   | expr_op '+' expr_op { $$ = makeOpPlus($1, $3); }
+  | expr_op CONCAT expr_op { $$ = makeOpConcat($1, $3); }
   | expr_app
   ;
 
-- 
cgit 1.4.1