""
"Foo
\"bar\"
baz"
"$bar ${4+2}"
''
'Foo
\'bar\'
baz'

----------------------------------------------------

[
	["string", ["\"\""]],
	["string", ["\"Foo\r\n\\\"bar\\\"\r\nbaz\""]],
	["string", [
		"\"",
		["interpolation", [
			["interpolation", "$bar"]
		]],
		["interpolation", [
			["interpolation", "$"],
			["punctuation", "{"],
			["number", "4"],
			["operator", "+"],
			["number", "2"],
			["punctuation", "}"]
		]],
		"\""
	]],
	["string", ["''"]],
	["string", ["'Foo\r\n\\'bar\\'\r\nbaz'"]]
]

----------------------------------------------------

Checks for strings and string interpolation.