Remove dynamic NODE allocation out of parser

A temporary NODE object was allocated to create iseq.  Instead, this
patch allocates a dummy NODE as auto variable, and discard it soon.
This change is intended as a preparation to manage AST NODEs out of GC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/node.c b/node.c
index 4070bec825..d0288beead 100644
--- a/node.c
+++ b/node.c
@@ -1062,6 +1062,18 @@ rb_gc_free_node(VALUE obj)
     }
 }
 
+void
+rb_node_init(NODE *n, enum node_type type, VALUE a0, VALUE a1, VALUE a2)
+{
+    VALUE klass = 0;
+    n->flags = T_NODE;
+    RBASIC_SET_CLASS_RAW((VALUE)n, klass);
+    n->u1.value = a0;
+    n->u2.value = a1;
+    n->u3.value = a2;
+    nd_set_type(n, type);
+}
+
 size_t
 rb_node_memsize(VALUE obj)
 {