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authoredSep 15, 2021
Added support for Wren (#3063)
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v1.30.0v1.25.0
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‎components.js

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‎components.json

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},
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"owner": "msollami"
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},
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"wren": {
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"title": "Wren",
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"owner": "clsource"
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},
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"xeora": {
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"title": "Xeora",
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"require": "markup",

‎components/prism-wren.js

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// https://wren.io/
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Prism.languages.wren = {
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// Multiline comments in Wren can have nested multiline comments
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// Comments: // and /* */
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'comment': [
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{
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// support 3 levels of nesting
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// regex: \/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|<self>)*\*\/
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pattern: /\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*))*\*\/)*\*\/)*\*\//,
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greedy: true
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},
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{
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pattern: /(^|[^\\:])\/\/.*/,
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lookbehind: true,
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greedy: true
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}
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],
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// Triple quoted strings are multiline but cannot have interpolation (raw strings)
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// Based on prism-python.js
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'triple-quoted-string': {
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pattern: /"""[\s\S]*?"""/,
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greedy: true,
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alias: 'string'
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},
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// see below
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'string-literal': null,
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// #!/usr/bin/env wren on the first line
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'hashbang': {
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pattern: /^#!\/.+/,
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greedy: true,
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alias: 'comment'
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},
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// Attributes are special keywords to add meta data to classes
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'attribute': {
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// #! attributes are stored in class properties
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// #!myvar = true
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// #attributes are not stored and dismissed at compilation
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pattern: /#!?[ \t\u3000]*\w+/,
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alias: 'keyword'
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},
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'class-name': [
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{
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// class definition
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// class Meta {}
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pattern: /(\bclass\s+)\w+/,
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lookbehind: true
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},
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// A class must always start with an uppercase.
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// File.read
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/\b[A-Z][a-z\d_]*\b/,
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],
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// A constant can be a variable, class, property or method. Just named in all uppercase letters
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'constant': /\b[A-Z][A-Z\d_]*\b/,
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'null': {
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pattern: /\bnull\b/,
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alias: 'keyword'
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},
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'keyword': /\b(?:as|break|class|construct|continue|else|for|foreign|if|import|in|is|return|static|super|this|var|while)\b/,
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'boolean': /\b(?:true|false)\b/,
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'number': /\b(?:0x[\da-f]+|\d+(?:\.\d+)?(?:e[+-]?\d+)?)\b/i,
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// Functions can be Class.method()
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'function': /\b[a-z_]\w*(?=\s*[({])/i,
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'operator': /<<|>>|[=!<>]=?|&&|\|\||[-+*/%~^&|?:]|\.{2,3}/,
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'punctuation': /[\[\](){}.,;]/,
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};
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Prism.languages.wren['string-literal'] = {
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// A single quote string is multiline and can have interpolation (similar to JS backticks ``)
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pattern: /(^|[^\\"])"(?:[^\\"%]|\\[\s\S]|%(?!\()|%\((?:[^()]|\((?:[^()]|\([^)]*\))*\))*\))*"/,
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lookbehind: true,
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greedy: true,
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inside: {
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'interpolation': {
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// "%(interpolation)"
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pattern: /((?:^|[^\\])(?:\\{2})*)%\((?:[^()]|\((?:[^()]|\([^)]*\))*\))*\)/,
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lookbehind: true,
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inside: {
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'expression': {
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pattern: /^(%\()[\s\S]+(?=\)$)/,
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lookbehind: true,
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inside: Prism.languages.wren
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},
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'interpolation-punctuation': {
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pattern: /^%\(|\)$/,
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alias: 'punctuation'
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},
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}
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},
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'string': /[\s\S]+/
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}
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};

‎components/prism-wren.min.js

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‎examples/prism-wren.html

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<h2>Full example</h2>
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<pre><code>// Source: https://wren.io/
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System.print("Hello, world!")
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class Wren {
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flyTo(city) {
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System.print("Flying to %(city)")
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}
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}
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var adjectives = Fiber.new {
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["small", "clean", "fast"].each {|word| Fiber.yield(word) }
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}
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while (!adjectives.isDone) System.print(adjectives.call())
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</code></pre>

‎tests/languages/wren/attribute_feature.test

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#hidden = true
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class Example {}
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#key
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#key = value
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#group(
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multiple,
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lines = true,
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lines = 0
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)
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class Example {
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#test(skip = true, iterations = 32)
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doStuff() {}
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}
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#doc = "not runtime data"
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#!runtimeAccess = true
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#!maxIterations = 16
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----------------------------------------------------
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[
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["attribute", "#hidden"],
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["operator", "="],
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["boolean", "true"],
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["keyword", "class"],
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["class-name", "Example"],
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["punctuation", "{"],
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["punctuation", "}"],
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["attribute", "#key"],
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["attribute", "#key"],
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["operator", "="],
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" value\r\n",
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["attribute", "#group"],
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["punctuation", "("],
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"\r\n multiple",
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["punctuation", ","],
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"\r\n lines ",
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["operator", "="],
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["boolean", "true"],
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["punctuation", ","],
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"\r\n lines ",
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["operator", "="],
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["number", "0"],
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["punctuation", ")"],
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["keyword", "class"],
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["class-name", "Example"],
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["punctuation", "{"],
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["attribute", "#test"],
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["punctuation", "("],
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"skip ",
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["operator", "="],
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["boolean", "true"],
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["punctuation", ","],
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" iterations ",
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["operator", "="],
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["number", "32"],
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["punctuation", ")"],
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["function", "doStuff"],
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["punctuation", "("],
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["punctuation", ")"],
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["punctuation", "{"],
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["punctuation", "}"],
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["punctuation", "}"],
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["attribute", "#doc"],
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["operator", "="],
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["string-literal", [
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["string", "\"not runtime data\""]
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]],
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["attribute", "#!runtimeAccess"],
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["operator", "="],
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["boolean", "true"],
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["attribute", "#!maxIterations"],
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["operator", "="],
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["number", "16"]
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]

‎tests/languages/wren/boolean_feature.test

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true
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false
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----------------------------------------------------
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[
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["boolean", "true"],
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["boolean", "false"]
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]

‎tests/languages/wren/class-name_feature.test

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Foo.bar()
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import "beverages" for Coffee, Tea
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class Foo {}
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class foo {}
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----------------------------------------------------
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[
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["class-name", "Foo"],
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["punctuation", "."],
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["function", "bar"],
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["punctuation", "("],
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["punctuation", ")"],
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["keyword", "import"],
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["string-literal", [
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["string", "\"beverages\""]
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]],
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["keyword", "for"],
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["class-name", "Coffee"],
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["punctuation", ","],
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["class-name", "Tea"],
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["keyword", "class"],
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["class-name", "Foo"],
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["punctuation", "{"],
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["punctuation", "}"],
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["keyword", "class"],
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["class-name", "foo"],
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["punctuation", "{"],
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["punctuation", "}"]
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]

‎tests/languages/wren/comment_feature.test

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// comment
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/**/
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/* comment */
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/*
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/*
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nested comment
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*/
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*/
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----------------------------------------------------
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[
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["comment", "// comment"],
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["comment", "/**/"],
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["comment", "/* comment */"],
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["comment", "/*\r\n/*\r\nnested comment\r\n*/\r\n*/"]
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]

‎tests/languages/wren/function_feature.test

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foo()
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foo {|x| x * 2}
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----------------------------------------------------
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[
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["function", "foo"], ["punctuation", "("], ["punctuation", ")"],
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["function", "foo"],
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["punctuation", "{"],
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["operator", "|"],
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"x",
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["operator", "|"],
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" x ",
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["operator", "*"],
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["number", "2"],
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["punctuation", "}"]
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]

‎tests/languages/wren/hashbang_feature.test

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#!/usr/bin/env wren
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----------------------------------------------------
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[
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["hashbang", "#!/usr/bin/env wren"]
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]

‎tests/languages/wren/keyword_feature.test

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as;
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break;
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class;
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construct;
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continue;
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else;
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for;
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foreign;
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if;
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import;
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in;
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is;
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return;
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static;
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super;
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this;
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var;
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while;
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null
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----------------------------------------------------
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[
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["keyword", "as"], ["punctuation", ";"],
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["keyword", "break"], ["punctuation", ";"],
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["keyword", "class"], ["punctuation", ";"],
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["keyword", "construct"], ["punctuation", ";"],
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["keyword", "continue"], ["punctuation", ";"],
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["keyword", "else"], ["punctuation", ";"],
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["keyword", "for"], ["punctuation", ";"],
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["keyword", "foreign"], ["punctuation", ";"],
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["keyword", "if"], ["punctuation", ";"],
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["keyword", "import"], ["punctuation", ";"],
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["keyword", "in"], ["punctuation", ";"],
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["keyword", "is"], ["punctuation", ";"],
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["keyword", "return"], ["punctuation", ";"],
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["keyword", "static"], ["punctuation", ";"],
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["keyword", "super"], ["punctuation", ";"],
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["keyword", "this"], ["punctuation", ";"],
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["keyword", "var"], ["punctuation", ";"],
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["keyword", "while"], ["punctuation", ";"],
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["null", "null"]
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]

‎tests/languages/wren/number_feature.test

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0
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1234
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-5678
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3.14159
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1.0
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-12.34
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0.0314159e02
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0.0314159e+02
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314.159e-02
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0xcaffe2
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----------------------------------------------------
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[
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["number", "0"],
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["number", "1234"],
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["operator", "-"], ["number", "5678"],
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["number", "3.14159"],
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["number", "1.0"],
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["operator", "-"], ["number", "12.34"],
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["number", "0.0314159e02"],
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["number", "0.0314159e+02"],
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["number", "314.159e-02"],
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["number", "0xcaffe2"]
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]

‎tests/languages/wren/operator_feature.test

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! ~ -
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* / % + -
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.. ...
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<< >>
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< <= > >= == !=
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& ^ |
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=
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&& ||
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? :
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1..2 1...3
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----------------------------------------------------
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[
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["operator", "!"],
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["operator", "~"],
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["operator", "-"],
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["operator", "*"],
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["operator", "/"],
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["operator", "%"],
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["operator", "+"],
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["operator", "-"],
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["operator", ".."],
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["operator", "..."],
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["operator", "<<"],
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["operator", ">>"],
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["operator", "<"],
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["operator", "<="],
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["operator", ">"],
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["operator", ">="],
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["operator", "=="],
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["operator", "!="],
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["operator", "&"],
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["operator", "^"],
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["operator", "|"],
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["operator", "="],
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["operator", "&&"], ["operator", "||"],
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["operator", "?"], ["operator", ":"],
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["number", "1"],
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["operator", ".."],
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["number", "2"],
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["number", "1"],
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["operator", "..."],
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["number", "3"]
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]

‎tests/languages/wren/punctuation_feature.test

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( ) [ ] { }
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, ; .
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----------------------------------------------------
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[
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["punctuation", "("],
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["punctuation", ")"],
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["punctuation", "["],
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["punctuation", "]"],
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["punctuation", "{"],
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["punctuation", "}"],
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["punctuation", ","],
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["punctuation", ";"],
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["punctuation", "."]
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]

‎tests/languages/wren/string_feature.test

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""
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"\"\\"
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"foo
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bar"
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""""""
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"""
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foo
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bar
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"""
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"""
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{
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"hello": "wren",
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"from" : "json"
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}
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"""
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"foo %(bar)"
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"foo * %(1 + 2) ~= bar"
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----------------------------------------------------
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[
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["string-literal", [
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["string", "\"\""]
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]],
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["string-literal", [
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["string", "\"\\\"\\\\\""]
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]],
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["string-literal", [
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["string", "\"foo\r\nbar\""]
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]],
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["triple-quoted-string", "\"\"\"\"\"\""],
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["triple-quoted-string", "\"\"\"\r\nfoo\r\nbar\r\n\"\"\""],
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["triple-quoted-string", "\"\"\"\r\n {\r\n \"hello\": \"wren\",\r\n \"from\" : \"json\"\r\n }\r\n\"\"\""],
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["string-literal", [
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["string", "\"foo "],
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["interpolation", [
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["interpolation-punctuation", "%("],
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["expression", ["bar"]],
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["interpolation-punctuation", ")"]
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]],
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["string", "\""]
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]],
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["string-literal", [
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["string", "\"foo * "],
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["interpolation", [
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["interpolation-punctuation", "%("],
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["expression", [
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["number", "1"],
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["operator", "+"],
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["number", "2"]
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]],
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["interpolation-punctuation", ")"]
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]],
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["string", " ~= bar\""]
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]]
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]

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