Factorize the making of a Regex object from a literal prefixed string

Property definitions

nitc :: naive_interpreter $ AugmentedStringFormExpr :: make_re
	# 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
src/interpreter/naive_interpreter.nit:2086,2--2119,4