# Any kind of string form with augmentations from prefixes or suffixes
class AugmentedStringFormExpr
	super AAugmentedLiteral

	redef var delimiter_start = '"'
	redef var delimiter_end = '"'

	# Is `self` a regular String object ?
	fun is_string: Bool do return prefix == "" or prefix == "raw"

	# Is `self` a Regular Expression ?
	fun is_re: Bool do return prefix == "re"

	# Is `self` a Byte String ?
	fun is_bytestring: Bool do return prefix == "b"

	redef fun is_valid_augmentation do
		if is_string and suffix == "" then return true
		if is_bytestring and suffix == "" then return true
		if is_re then
			var suf = suffix
			for i in suf.chars do
				if i == 'i' then continue
				if i == 'm' then continue
				if i == 'b' then continue
				return false
			end
			return true
		end
		if prefix != "" or suffix != "" then return false
		return true
	end
end