nobu	2017-02-08 10:18:56 +0900 (Wed, 08 Feb 2017)

  New Revision: 57573

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57573

  Log:
    node.c: compress logop sequence
    
    * node.c (dump_node): compress sequence of same logical binary
      operators, NODE_AND/NODE_OR.

  Modified files:
    trunk/node.c
Index: node.c
===================================================================
--- node.c	(revision 57572)
+++ node.c	(revision 57573)
@@ -158,6 +158,7 @@ dump_node(VALUE buf, VALUE indent, int c https://github.com/ruby/ruby/blob/trunk/node.c#L158
     int field_flag;
     int i;
     const char *next_indent = default_indent;
+    enum node_type type;
 
     if (!node) {
 	D_NULL_NODE;
@@ -166,7 +167,8 @@ dump_node(VALUE buf, VALUE indent, int c https://github.com/ruby/ruby/blob/trunk/node.c#L167
 
     D_NODE_HEADER(node);
 
-    switch (nd_type(node)) {
+    type = nd_type(node);
+    switch (type) {
       case NODE_BLOCK:
 	ANN("statement sequence");
 	ANN("format: [nd_head]; ...; [nd_next]");
@@ -334,7 +336,12 @@ dump_node(VALUE buf, VALUE indent, int c https://github.com/ruby/ruby/blob/trunk/node.c#L336
 	ANN("format: [nd_1st] || [nd_2nd]");
 	ANN("example: foo || bar");
       andor:
-	F_NODE(nd_1st, "left expr");
+	while (1) {
+	    F_NODE(nd_1st, "left expr");
+	    if (!node->nd_2nd || nd_type(node->nd_2nd) != type)
+		break;
+	    node = node->nd_2nd;
+	}
 	LAST_NODE;
 	F_NODE(nd_2nd, "right expr");
 	break;

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