+redef class AugmentedStringFormExpr
+ # Factorize the making of a `Regex` object from a literal prefixed string
+ fun make_re(v: NaiveInterpreter, rs: Instance): nullable Instance do
+ var tore = to_re
+ assert tore != null
+ var res = v.callsite(tore, [rs])
+ if res == null then
+ print "Cannot call property `to_re` on {self}"
+ abort
+ end
+ for j in suffix.chars do
+ if j == 'i' then
+ var prop = ignore_case
+ assert prop != null
+ v.callsite(prop, [res, v.bool_instance(true)])
+ continue
+ end
+ if j == 'm' then
+ var prop = newline
+ assert prop != null
+ v.callsite(prop, [res, v.bool_instance(true)])
+ continue
+ end
+ if j == 'b' then
+ var prop = extended
+ assert prop != null
+ v.callsite(prop, [res, v.bool_instance(false)])
+ continue
+ end
+ # Should not happen, this needs to be updated
+ # along with the addition of new suffixes
+ abort
+ end
+ return res
+ end
+end
+