1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
'a\000\xab'
'\007'
'\377'
'\xa' // illegal: too few hexadecimal digits
"\n"
"\""
'Hello, world!\n'
"Hello, \( name )!"
"日本語"
"\u65e5本\U00008a9e"
'\xff\u00FF'
"\uD800" // illegal: surrogate half (TODO: probably should allow)
"\U00110000" // illegal: invalid Unicode code point
#"This is not an \(interpolation)"#
#"This is an \#(interpolation)"#
#"The sequence "\U0001F604" renders as \#U0001F604."#
"日本語" // UTF-8 input text
'日本語' // UTF-8 input text as byte sequence
"\u65e5\u672c\u8a9e" // the explicit Unicode code points
"\U000065e5\U0000672c\U00008a9e" // the explicit Unicode code points
'\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e' // the explicit UTF-8 bytes
"""
lily:
out of the water
out of itself
bass
picking bugs
off the moon
— Nick Virgilio, Selected Haiku, 1988
"""
----------------------------------------------------
[
["string-literal", [
["string", "'a"],
["escape", "\\000"],
["escape", "\\xab"],
["string", "'"]
]],
["string-literal", [
["string", "'"],
["escape", "\\007"],
["string", "'"]
]],
["string-literal", [
["string", "'"],
["escape", "\\377"],
["string", "'"]
]],
["string-literal", [
["string", "'"],
["escape", "\\xa"],
["string", "'"]
]],
["comment", "// illegal: too few hexadecimal digits"],
["string-literal", [
["string", "\""],
["escape", "\\n"],
["string", "\""]
]],
["string-literal", [
["string", "\""],
["escape", "\\\""],
["string", "\""]
]],
["string-literal", [
["string", "'Hello, world!"],
["escape", "\\n"],
["string", "'"]
]],
["string-literal", [
["string", "\"Hello, "],
["interpolation", [
["punctuation", "\\("],
["expression", [" name "]],
["punctuation", ")"]
]],
["string", "!\""]
]],
["string-literal", [
["string", "\"日本語\""]
]],
["string-literal", [
["string", "\""],
["escape", "\\u65e5"],
["string", "本"],
["escape", "\\U00008a9e"],
["string", "\""]
]],
["string-literal", [
["string", "'"],
["escape", "\\xff"],
["escape", "\\u00FF"],
["string", "'"]
]],
["string-literal", [
["string", "\""],
["escape", "\\uD800"],
["string", "\""]
]],
["comment", "// illegal: surrogate half (TODO: probably should allow)"],
["string-literal", [
["string", "\""],
["escape", "\\U00110000"],
["string", "\""]
]],
["comment", "// illegal: invalid Unicode code point"],
["string-literal", [
["string", "#\"This is not an \\(interpolation)\"#"]
]],
["string-literal", [
["string", "#\"This is an "],
["interpolation", [
["punctuation", "\\#("],
["expression", ["interpolation"]],
["punctuation", ")"]
]],
["string", "\"#"]
]],
["string-literal", [
["string", "#\"The sequence \"\\U0001F604\" renders as "],
["escape", "\\#U0001F604"],
["string", ".\"#"]
]],
["string-literal", [
["string", "\"日本語\""]
]],
["comment", "// UTF-8 input text"],
["string-literal", [
["string", "'日本語'"]
]],
["comment", "// UTF-8 input text as byte sequence"],
["string-literal", [
["string", "\""],
["escape", "\\u65e5"],
["escape", "\\u672c"],
["escape", "\\u8a9e"],
["string", "\""]
]],
["comment", "// the explicit Unicode code points"],
["string-literal", [
["string", "\""],
["escape", "\\U000065e5"],
["escape", "\\U0000672c"],
["escape", "\\U00008a9e"],
["string", "\""]
]],
["comment", "// the explicit Unicode code points"],
["string-literal", [
["string", "'"],
["escape", "\\xe6"],
["escape", "\\x97"],
["escape", "\\xa5"],
["escape", "\\xe6"],
["escape", "\\x9c"],
["escape", "\\xac"],
["escape", "\\xe8"],
["escape", "\\xaa"],
["escape", "\\x9e"],
["string", "'"]
]],
["comment", "// the explicit UTF-8 bytes"],
["string-literal", [
["string", "\"\"\"\r\n lily:\r\n out of the water\r\n out of itself\r\n\r\n bass\r\n picking bugs\r\n off the moon\r\n — Nick Virgilio, Selected Haiku, 1988\r\n \"\"\""]
]]
]