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(function (Prism) { | ||
|
||
// https://cuelang.org/docs/references/spec/ | ||
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// eslint-disable-next-line regexp/strict | ||
var stringEscape = /\\(?:(?!\2)|\2(?:[^()\r\n]|\([^()]*\)))/.source; | ||
// eslint-disable-next-line regexp/strict | ||
var stringTypes = /"""(?:[^\\"]|"(?!""\2)|<esc>)*"""/.source + | ||
// eslint-disable-next-line regexp/strict | ||
'|' + /'''(?:[^\\']|'(?!''\2)|<esc>)*'''/.source + | ||
// eslint-disable-next-line regexp/strict | ||
'|' + /"(?:[^\\\r\n"]|"(?!\2)|<esc>)*"/.source + | ||
// eslint-disable-next-line regexp/strict | ||
'|' + /'(?:[^\\\r\n']|'(?!\2)|<esc>)*'/.source; | ||
var stringLiteral = '(?:' + stringTypes.replace(/<esc>/g, stringEscape) + ')'; | ||
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Prism.languages.cue = { | ||
'comment': { | ||
pattern: /\/\/.*/, | ||
greedy: true | ||
}, | ||
'string-literal': { | ||
// eslint-disable-next-line regexp/strict | ||
pattern: RegExp(/(^|[^#"'\\])(#*)/.source + stringLiteral + /(?!["'])\2/.source), | ||
lookbehind: true, | ||
greedy: true, | ||
inside: { | ||
// I'm using dirty hack here. We have to know the number hashes at the start of the string somehow, | ||
// but we can't look back. So instead, we will use a lookahead, go to the end of the string, and | ||
// capture the hashes at the end of the string. | ||
'escape': { | ||
pattern: /(?=[\s\S]*["'](#*)$)\\\1(?:U[a-fA-F0-9]{1,8}|u[a-fA-F0-9]{1,4}|x[a-fA-F0-9]{1,2}|\d{2,3}|[^(])/, | ||
greedy: true, | ||
alias: 'string' | ||
}, | ||
'interpolation': { | ||
pattern: /(?=[\s\S]*["'](#*)$)\\\1\([^()]*\)/, | ||
greedy: true, | ||
inside: { | ||
'punctuation': /^\\#*\(|\)$/, | ||
'expression': { | ||
pattern: /[\s\S]+/, | ||
inside: null | ||
} | ||
} | ||
}, | ||
'string': /[\s\S]+/ | ||
} | ||
}, | ||
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'keyword': { | ||
pattern: /(^|[^\w$])(?:for|if|import|in|let|null|package)(?![\w$])/, | ||
lookbehind: true | ||
}, | ||
'boolean': { | ||
pattern: /(^|[^\w$])(?:false|true)(?![\w$])/, | ||
lookbehind: true | ||
}, | ||
'builtin': { | ||
pattern: /(^|[^\w$])(?:bool|bytes|float|float(?:32|64)|u?int(?:8|16|32|64|128)?|number|rune|string)(?![\w$])/, | ||
lookbehind: true | ||
}, | ||
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'attribute': { | ||
pattern: /@[\w$]+(?=\s*\()/, | ||
alias: 'function' | ||
}, | ||
'function': { | ||
pattern: /(^|[^\w$])[a-z_$][\w$]*(?=\s*\()/i, | ||
lookbehind: true | ||
}, | ||
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'number': { | ||
pattern: /(^|[^\w$.])(?:0b[01]+(?:_[01]+)*|0o[0-7]+(?:_[0-7]+)*|0[xX][0-9A-Fa-f]+(?:_[0-9A-Fa-f]+)*|(?:\d+(?:_\d+)*(?:\.(?:\d+(?:_\d+)*)?)?|\.\d+(?:_\d+)*)(?:[eE][+-]?\d+(?:_\d+)*)?(?:[KMGTP]i?)?)(?![\w$])/, | ||
lookbehind: true | ||
}, | ||
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'operator': /\.{3}|_\|_|&&?|\|\|?|[=!]~|[<>=!]=?|[+\-*/?]/, | ||
'punctuation': /[()[\]{},.:]/ | ||
}; | ||
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Prism.languages.cue['string-literal'].inside.interpolation.inside.expression.inside = Prism.languages.cue; | ||
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}(Prism)); |
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<h2>Full example</h2> | ||
<pre><code>#Spec: { | ||
kind: string | ||
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name: { | ||
first: !="" // must be specified and non-empty | ||
middle?: !="" // optional, but must be non-empty when specified | ||
last: !="" | ||
} | ||
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// The minimum must be strictly smaller than the maximum and vice versa. | ||
minimum?: int & <maximum | ||
maximum?: int & >minimum | ||
} | ||
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// A spec is of type #Spec | ||
spec: #Spec | ||
spec: { | ||
knid: "Homo Sapiens" // error, misspelled field | ||
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name: first: "Jane" | ||
name: last: "Doe" | ||
}</code></pre> |
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@protobuf(proto3) | ||
@jsonschema(id="https://example.org/mystruct1.json") | ||
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---------------------------------------------------- | ||
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[ | ||
["attribute", "@protobuf"], | ||
["punctuation", "("], | ||
"proto3", | ||
["punctuation", ")"], | ||
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["attribute", "@jsonschema"], | ||
["punctuation", "("], | ||
"id", | ||
["operator", "="], | ||
["string-literal", [ | ||
["string", "\"https://example.org/mystruct1.json\""] | ||
]], | ||
["punctuation", ")"] | ||
] |
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true | ||
false | ||
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---------------------------------------------------- | ||
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[ | ||
["boolean", "true"], | ||
["boolean", "false"] | ||
] |
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// Types | ||
null // The null type and value | ||
bool // All boolean values | ||
int // All integral numbers | ||
float // All decimal floating-point numbers | ||
string // Any valid UTF-8 sequence | ||
bytes // Any valid byte sequence | ||
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// Derived Value | ||
number // int | float | ||
uint // >=0 | ||
uint8 // >=0 & <=255 | ||
int8 // >=-128 & <=127 | ||
uint16 // >=0 & <=65536 | ||
int16 // >=-32_768 & <=32_767 | ||
rune // >=0 & <=0x10FFFF | ||
uint32 // >=0 & <=4_294_967_296 | ||
int32 // >=-2_147_483_648 & <=2_147_483_647 | ||
uint64 // >=0 & <=18_446_744_073_709_551_615 | ||
int64 // >=-9_223_372_036_854_775_808 & <=9_223_372_036_854_775_807 | ||
uint128 // >=0 & <=340_282_366_920_938_463_463_374_607_431_768_211_455 | ||
int128 // >=-170_141_183_460_469_231_731_687_303_715_884_105_728 & | ||
// <=170_141_183_460_469_231_731_687_303_715_884_105_727 | ||
float32 // >=-3.40282346638528859811704183484516925440e+38 & | ||
// <=3.40282346638528859811704183484516925440e+38 | ||
float64 // >=-1.797693134862315708145274237317043567981e+308 & | ||
// <=1.797693134862315708145274237317043567981e+308 | ||
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---------------------------------------------------- | ||
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[ | ||
["comment", "// Types"], | ||
["keyword", "null"], ["comment", "// The null type and value"], | ||
["builtin", "bool"], ["comment", "// All boolean values"], | ||
["builtin", "int"], ["comment", "// All integral numbers"], | ||
["builtin", "float"], ["comment", "// All decimal floating-point numbers"], | ||
["builtin", "string"], ["comment", "// Any valid UTF-8 sequence"], | ||
["builtin", "bytes"], ["comment", "// Any valid byte sequence"], | ||
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["comment", "// Derived Value"], | ||
["builtin", "number"], | ||
["comment", "// int | float"], | ||
["builtin", "uint"], | ||
["comment", "// >=0"], | ||
["builtin", "uint8"], | ||
["comment", "// >=0 & <=255"], | ||
["builtin", "int8"], | ||
["comment", "// >=-128 & <=127"], | ||
["builtin", "uint16"], | ||
["comment", "// >=0 & <=65536"], | ||
["builtin", "int16"], | ||
["comment", "// >=-32_768 & <=32_767"], | ||
["builtin", "rune"], | ||
["comment", "// >=0 & <=0x10FFFF"], | ||
["builtin", "uint32"], | ||
["comment", "// >=0 & <=4_294_967_296"], | ||
["builtin", "int32"], | ||
["comment", "// >=-2_147_483_648 & <=2_147_483_647"], | ||
["builtin", "uint64"], | ||
["comment", "// >=0 & <=18_446_744_073_709_551_615"], | ||
["builtin", "int64"], | ||
["comment", "// >=-9_223_372_036_854_775_808 & <=9_223_372_036_854_775_807"], | ||
["builtin", "uint128"], | ||
["comment", "// >=0 & <=340_282_366_920_938_463_463_374_607_431_768_211_455"], | ||
["builtin", "int128"], | ||
["comment", "// >=-170_141_183_460_469_231_731_687_303_715_884_105_728 &"], | ||
["comment", "// <=170_141_183_460_469_231_731_687_303_715_884_105_727"], | ||
["builtin", "float32"], | ||
["comment", "// >=-3.40282346638528859811704183484516925440e+38 &"], | ||
["comment", "// <=3.40282346638528859811704183484516925440e+38"], | ||
["builtin", "float64"], | ||
["comment", "// >=-1.797693134862315708145274237317043567981e+308 &"], | ||
["comment", "// <=1.797693134862315708145274237317043567981e+308"] | ||
] |
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// comment | ||
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---------------------------------------------------- | ||
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[ | ||
["comment", "// comment"] | ||
] |
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math.Sin(x) | ||
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---------------------------------------------------- | ||
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[ | ||
"math", | ||
["punctuation", "."], | ||
["function", "Sin"], | ||
["punctuation", "("], | ||
"x", | ||
["punctuation", ")"] | ||
] |
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for | ||
if | ||
import | ||
in | ||
let | ||
null | ||
package | ||
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---------------------------------------------------- | ||
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[ | ||
["keyword", "for"], | ||
["keyword", "if"], | ||
["keyword", "import"], | ||
["keyword", "in"], | ||
["keyword", "let"], | ||
["keyword", "null"], | ||
["keyword", "package"] | ||
] |
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42 | ||
1.5G // 1_000_000_000 | ||
1.3Ki // 1.3 * 1024 = trunc(1331.2) = 1331 | ||
170_141_183_460_469_231_731_687_303_715_884_105_727 | ||
0xBad_Face | ||
0o755 | ||
0b0101_0001 | ||
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0. | ||
72.40 | ||
072.40 // == 72.40 | ||
2.71828 | ||
1.e+0 | ||
6.67428e-11 | ||
1E6 | ||
.25 | ||
.12345E+5 | ||
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---------------------------------------------------- | ||
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[ | ||
["number", "42"], | ||
["number", "1.5G"], ["comment", "// 1_000_000_000"], | ||
["number", "1.3Ki"], ["comment", "// 1.3 * 1024 = trunc(1331.2) = 1331"], | ||
["number", "170_141_183_460_469_231_731_687_303_715_884_105_727"], | ||
["number", "0xBad_Face"], | ||
["number", "0o755"], | ||
["number", "0b0101_0001"], | ||
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["number", "0."], | ||
["number", "72.40"], | ||
["number", "072.40"], ["comment", "// == 72.40"], | ||
["number", "2.71828"], | ||
["number", "1.e+0"], | ||
["number", "6.67428e-11"], | ||
["number", "1E6"], | ||
["number", ".25"], | ||
["number", ".12345E+5"] | ||
] |
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+ - * / | ||
< <= > >= == != =~ !~ | ||
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&& || & | | ||
! ? = | ||
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_|_ | ||
... | ||
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---------------------------------------------------- | ||
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[ | ||
["operator", "+"], | ||
["operator", "-"], | ||
["operator", "*"], | ||
["operator", "/"], | ||
|
||
["operator", "<"], | ||
["operator", "<="], | ||
["operator", ">"], | ||
["operator", ">="], | ||
["operator", "=="], | ||
["operator", "!="], | ||
["operator", "=~"], | ||
["operator", "!~"], | ||
|
||
["operator", "&&"], ["operator", "||"], ["operator", "&"], ["operator", "|"], | ||
["operator", "!"], ["operator", "?"], ["operator", "="], | ||
|
||
["operator", "_|_"], | ||
["operator", "..."] | ||
] |
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( ) [ ] { } | ||
, . : | ||
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---------------------------------------------------- | ||
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[ | ||
["punctuation", "("], | ||
["punctuation", ")"], | ||
["punctuation", "["], | ||
["punctuation", "]"], | ||
["punctuation", "{"], | ||
["punctuation", "}"], | ||
|
||
["punctuation", ","], | ||
["punctuation", "."], | ||
["punctuation", ":"] | ||
] |
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'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 | ||
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#"This is not an \(interpolation)"# | ||
#"This is an \#(interpolation)"# | ||
#"The sequence "\U0001F604" renders as \#U0001F604."# | ||
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"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 | ||
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""" | ||
lily: | ||
out of the water | ||
out of itself | ||
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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 \"\"\""] | ||
]] | ||
] |