ko1	2018-11-27 11:45:25 +0900 (Tue, 27 Nov 2018)

  New Revision: 66015

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66015

  Log:
    `RubyVM::ISeq.of` accept ISeq.
    
    * iseq.c (iseqw_s_of): return given object if the given object is
      a `RubyVM::InstructionSequence`. We can specify ISeq for
      `TracePoint#enable(target:)`.

  Modified files:
    trunk/iseq.c
Index: iseq.c
===================================================================
--- iseq.c	(revision 66014)
+++ iseq.c	(revision 66015)
@@ -2320,17 +2320,26 @@ iseqw_s_of(VALUE klass, VALUE body) https://github.com/ruby/ruby/blob/trunk/iseq.c#L2320
     rb_secure(1);
 
     if (rb_obj_is_proc(body)) {
-	iseq = vm_proc_iseq(body);
+        iseq = vm_proc_iseq(body);
 
-	if (!rb_obj_is_iseq((VALUE)iseq)) {
-	    iseq = NULL;
-	}
+	if (rb_obj_is_iseq((VALUE)iseq)) {
+            return iseqw_new(iseq);
+        }
+        else {
+            return Qnil;
+        }
+    }
+    else if (rb_obj_is_method(body)) {
+        return iseqw_new(rb_method_iseq(body));
+    }
+    else if (RB_TYPE_P(body, T_DATA) &&
+             RTYPEDDATA_P(body) &&
+             RTYPEDDATA_TYPE(body) == &iseqw_data_type) {
+        return body;
     }
     else {
-	iseq = rb_method_iseq(body);
+        return Qnil;
     }
-
-    return iseq ? iseqw_new(iseq) : Qnil;
 }
 
 /*

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