Introduce NODE_UNLESS for branch coverage

`unless` statement was a syntactic sugar for `if` statement,
which made the result of branch coverage hard to understand.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59889 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 0 deletions

diff --git a/node.c b/node.c
index 0222a19af1..a0544d7a7a 100644
--- a/node.c
+++ b/node.c
@@ -200,6 +200,16 @@ dump_node(VALUE buf, VALUE indent, int comment, NODE *node)
 	F_NODE(nd_else, "else clause");
 	break;
 
+      case NODE_UNLESS:
+	ANN("unless statement");
+	ANN("format: unless [nd_cond] then [nd_body] else [nd_else] end");
+	ANN("example: unless x == 1 then foo else bar end");
+	F_NODE(nd_cond, "condition expr");
+	F_NODE(nd_body, "then clause");
+	LAST_NODE;
+	F_NODE(nd_else, "else clause");
+	break;
+
       case NODE_CASE:
 	ANN("case statement");
 	ANN("format: case [nd_head]; [nd_body]; end");