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// https://wren.io/ | ||
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Prism.languages.wren = { | ||
// Multiline comments in Wren can have nested multiline comments | ||
// Comments: // and /* */ | ||
'comment': [ | ||
{ | ||
// support 3 levels of nesting | ||
// regex: \/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|<self>)*\*\/ | ||
pattern: /\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*))*\*\/)*\*\/)*\*\//, | ||
greedy: true | ||
}, | ||
{ | ||
pattern: /(^|[^\\:])\/\/.*/, | ||
lookbehind: true, | ||
greedy: true | ||
} | ||
], | ||
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// Triple quoted strings are multiline but cannot have interpolation (raw strings) | ||
// Based on prism-python.js | ||
'triple-quoted-string': { | ||
pattern: /"""[\s\S]*?"""/, | ||
greedy: true, | ||
alias: 'string' | ||
}, | ||
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// see below | ||
'string-literal': null, | ||
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// #!/usr/bin/env wren on the first line | ||
'hashbang': { | ||
pattern: /^#!\/.+/, | ||
greedy: true, | ||
alias: 'comment' | ||
}, | ||
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// Attributes are special keywords to add meta data to classes | ||
'attribute': { | ||
// #! attributes are stored in class properties | ||
// #!myvar = true | ||
// #attributes are not stored and dismissed at compilation | ||
pattern: /#!?[ \t\u3000]*\w+/, | ||
alias: 'keyword' | ||
}, | ||
'class-name': [ | ||
{ | ||
// class definition | ||
// class Meta {} | ||
pattern: /(\bclass\s+)\w+/, | ||
lookbehind: true | ||
}, | ||
// A class must always start with an uppercase. | ||
// File.read | ||
/\b[A-Z][a-z\d_]*\b/, | ||
], | ||
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// A constant can be a variable, class, property or method. Just named in all uppercase letters | ||
'constant': /\b[A-Z][A-Z\d_]*\b/, | ||
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'null': { | ||
pattern: /\bnull\b/, | ||
alias: 'keyword' | ||
}, | ||
'keyword': /\b(?:as|break|class|construct|continue|else|for|foreign|if|import|in|is|return|static|super|this|var|while)\b/, | ||
'boolean': /\b(?:true|false)\b/, | ||
'number': /\b(?:0x[\da-f]+|\d+(?:\.\d+)?(?:e[+-]?\d+)?)\b/i, | ||
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// Functions can be Class.method() | ||
'function': /\b[a-z_]\w*(?=\s*[({])/i, | ||
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'operator': /<<|>>|[=!<>]=?|&&|\|\||[-+*/%~^&|?:]|\.{2,3}/, | ||
'punctuation': /[\[\](){}.,;]/, | ||
}; | ||
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Prism.languages.wren['string-literal'] = { | ||
// A single quote string is multiline and can have interpolation (similar to JS backticks ``) | ||
pattern: /(^|[^\\"])"(?:[^\\"%]|\\[\s\S]|%(?!\()|%\((?:[^()]|\((?:[^()]|\([^)]*\))*\))*\))*"/, | ||
lookbehind: true, | ||
greedy: true, | ||
inside: { | ||
'interpolation': { | ||
// "%(interpolation)" | ||
pattern: /((?:^|[^\\])(?:\\{2})*)%\((?:[^()]|\((?:[^()]|\([^)]*\))*\))*\)/, | ||
lookbehind: true, | ||
inside: { | ||
'expression': { | ||
pattern: /^(%\()[\s\S]+(?=\)$)/, | ||
lookbehind: true, | ||
inside: Prism.languages.wren | ||
}, | ||
'interpolation-punctuation': { | ||
pattern: /^%\(|\)$/, | ||
alias: 'punctuation' | ||
}, | ||
} | ||
}, | ||
'string': /[\s\S]+/ | ||
} | ||
}; |
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<h2>Full example</h2> | ||
<pre><code>// Source: https://wren.io/ | ||
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System.print("Hello, world!") | ||
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class Wren { | ||
flyTo(city) { | ||
System.print("Flying to %(city)") | ||
} | ||
} | ||
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var adjectives = Fiber.new { | ||
["small", "clean", "fast"].each {|word| Fiber.yield(word) } | ||
} | ||
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while (!adjectives.isDone) System.print(adjectives.call()) | ||
</code></pre> |
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#hidden = true | ||
class Example {} | ||
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#key | ||
#key = value | ||
#group( | ||
multiple, | ||
lines = true, | ||
lines = 0 | ||
) | ||
class Example { | ||
#test(skip = true, iterations = 32) | ||
doStuff() {} | ||
} | ||
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#doc = "not runtime data" | ||
#!runtimeAccess = true | ||
#!maxIterations = 16 | ||
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---------------------------------------------------- | ||
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[ | ||
["attribute", "#hidden"], | ||
["operator", "="], | ||
["boolean", "true"], | ||
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["keyword", "class"], | ||
["class-name", "Example"], | ||
["punctuation", "{"], | ||
["punctuation", "}"], | ||
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["attribute", "#key"], | ||
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["attribute", "#key"], | ||
["operator", "="], | ||
" value\r\n", | ||
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["attribute", "#group"], | ||
["punctuation", "("], | ||
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"\r\n multiple", | ||
["punctuation", ","], | ||
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"\r\n lines ", | ||
["operator", "="], | ||
["boolean", "true"], | ||
["punctuation", ","], | ||
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"\r\n lines ", | ||
["operator", "="], | ||
["number", "0"], | ||
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["punctuation", ")"], | ||
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["keyword", "class"], | ||
["class-name", "Example"], | ||
["punctuation", "{"], | ||
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["attribute", "#test"], | ||
["punctuation", "("], | ||
"skip ", | ||
["operator", "="], | ||
["boolean", "true"], | ||
["punctuation", ","], | ||
" iterations ", | ||
["operator", "="], | ||
["number", "32"], | ||
["punctuation", ")"], | ||
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["function", "doStuff"], | ||
["punctuation", "("], | ||
["punctuation", ")"], | ||
["punctuation", "{"], | ||
["punctuation", "}"], | ||
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["punctuation", "}"], | ||
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["attribute", "#doc"], | ||
["operator", "="], | ||
["string-literal", [ | ||
["string", "\"not runtime data\""] | ||
]], | ||
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["attribute", "#!runtimeAccess"], | ||
["operator", "="], | ||
["boolean", "true"], | ||
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["attribute", "#!maxIterations"], | ||
["operator", "="], | ||
["number", "16"] | ||
] |
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true | ||
false | ||
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---------------------------------------------------- | ||
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[ | ||
["boolean", "true"], | ||
["boolean", "false"] | ||
] |
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Foo.bar() | ||
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import "beverages" for Coffee, Tea | ||
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class Foo {} | ||
class foo {} | ||
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---------------------------------------------------- | ||
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[ | ||
["class-name", "Foo"], | ||
["punctuation", "."], | ||
["function", "bar"], | ||
["punctuation", "("], | ||
["punctuation", ")"], | ||
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["keyword", "import"], | ||
["string-literal", [ | ||
["string", "\"beverages\""] | ||
]], | ||
["keyword", "for"], | ||
["class-name", "Coffee"], | ||
["punctuation", ","], | ||
["class-name", "Tea"], | ||
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["keyword", "class"], | ||
["class-name", "Foo"], | ||
["punctuation", "{"], | ||
["punctuation", "}"], | ||
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["keyword", "class"], | ||
["class-name", "foo"], | ||
["punctuation", "{"], | ||
["punctuation", "}"] | ||
] |
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// comment | ||
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/**/ | ||
/* comment */ | ||
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/* | ||
/* | ||
nested comment | ||
*/ | ||
*/ | ||
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---------------------------------------------------- | ||
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[ | ||
["comment", "// comment"], | ||
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["comment", "/**/"], | ||
["comment", "/* comment */"], | ||
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["comment", "/*\r\n/*\r\nnested comment\r\n*/\r\n*/"] | ||
] |
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foo() | ||
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foo {|x| x * 2} | ||
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---------------------------------------------------- | ||
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[ | ||
["function", "foo"], ["punctuation", "("], ["punctuation", ")"], | ||
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["function", "foo"], | ||
["punctuation", "{"], | ||
["operator", "|"], | ||
"x", | ||
["operator", "|"], | ||
" x ", | ||
["operator", "*"], | ||
["number", "2"], | ||
["punctuation", "}"] | ||
] |
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#!/usr/bin/env wren | ||
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---------------------------------------------------- | ||
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[ | ||
["hashbang", "#!/usr/bin/env wren"] | ||
] |
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as; | ||
break; | ||
class; | ||
construct; | ||
continue; | ||
else; | ||
for; | ||
foreign; | ||
if; | ||
import; | ||
in; | ||
is; | ||
return; | ||
static; | ||
super; | ||
this; | ||
var; | ||
while; | ||
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null | ||
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---------------------------------------------------- | ||
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[ | ||
["keyword", "as"], ["punctuation", ";"], | ||
["keyword", "break"], ["punctuation", ";"], | ||
["keyword", "class"], ["punctuation", ";"], | ||
["keyword", "construct"], ["punctuation", ";"], | ||
["keyword", "continue"], ["punctuation", ";"], | ||
["keyword", "else"], ["punctuation", ";"], | ||
["keyword", "for"], ["punctuation", ";"], | ||
["keyword", "foreign"], ["punctuation", ";"], | ||
["keyword", "if"], ["punctuation", ";"], | ||
["keyword", "import"], ["punctuation", ";"], | ||
["keyword", "in"], ["punctuation", ";"], | ||
["keyword", "is"], ["punctuation", ";"], | ||
["keyword", "return"], ["punctuation", ";"], | ||
["keyword", "static"], ["punctuation", ";"], | ||
["keyword", "super"], ["punctuation", ";"], | ||
["keyword", "this"], ["punctuation", ";"], | ||
["keyword", "var"], ["punctuation", ";"], | ||
["keyword", "while"], ["punctuation", ";"], | ||
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["null", "null"] | ||
] |
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0 | ||
1234 | ||
-5678 | ||
3.14159 | ||
1.0 | ||
-12.34 | ||
0.0314159e02 | ||
0.0314159e+02 | ||
314.159e-02 | ||
0xcaffe2 | ||
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---------------------------------------------------- | ||
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[ | ||
["number", "0"], | ||
["number", "1234"], | ||
["operator", "-"], ["number", "5678"], | ||
["number", "3.14159"], | ||
["number", "1.0"], | ||
["operator", "-"], ["number", "12.34"], | ||
["number", "0.0314159e02"], | ||
["number", "0.0314159e+02"], | ||
["number", "314.159e-02"], | ||
["number", "0xcaffe2"] | ||
] |
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