Add OP_TYPE_IS_COP_NN() helper macro

Author: leonerd

op.h

@@ -1080,6 +1080,9 @@ C<sib> is non-null. For a higher-level interface, see C<L</op_sibling_splice>>.
 #define OP_TYPE_ISNT_AND_WASNT(o, type) \
     ( (o) && OP_TYPE_ISNT_AND_WASNT_NN(o, type) )
 
+#define OP_TYPE_IS_COP_NN(o) \
+    (OP_TYPE_IS_NN(o, OP_NEXTSTATE) || OP_TYPE_IS_NN(o, OP_DBSTATE))
+
 /* should match anything that uses ck_ftst in regen/opcodes */
 #define OP_IS_STAT(op) (OP_IS_FILETEST(op) || (op) == OP_LSTAT || (op) == OP_STAT)