* eval.c (rb_eval), parse.y (arg): reduce fixnum range literal at

  parser.  fixed: [ruby-dev:26113]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@8425 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 16 insertions, 2 deletions

diff --git a/parse.y b/parse.y
index 2b41cd558..fe2cd0685 100644
--- a/parse.y
+++ b/parse.y
@@ -1057,13 +1057,27 @@ arg		: lhs '=' arg
 		    {
 			value_expr($1);
 			value_expr($3);
-			$$ = NEW_DOT2($1, $3);
+			if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
+			    nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
+			    $1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qfalse);
+			    $$ = $1;
+			}
+			else {
+			    $$ = NEW_DOT2($1, $3);
+			}
 		    }
 		| arg tDOT3 arg
 		    {
 			value_expr($1);
 			value_expr($3);
-			$$ = NEW_DOT3($1, $3);
+			if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
+			    nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
+			    $1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qtrue);
+			    $$ = $1;
+			}
+			else {
+			    $$ = NEW_DOT3($1, $3);
+			}
 		    }
 		| arg '+' arg
 		    {