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* Added a list concatenation operator:

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[1 2 3] ++ [4 5 6] => [1 2 3 4 5 6]
This commit is contained in:
Eelco Dolstra 2005-07-25 15:05:34 +00:00
parent e6899794ae
commit 991a130b1e
8 changed files with 29 additions and 12 deletions
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2
src/libexpr/parser.y
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@ -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
;