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// https://wren.io/
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,
},
],
// 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',
},
// see below
'string-literal': null,
// #!/usr/bin/env wren on the first line
hashbang: {
pattern: /^#!\/.+/,
greedy: true,
alias: 'comment',
},
// 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/,
],
// A constant can be a variable, class, property or method. Just named in all uppercase letters
constant: /\b[A-Z][A-Z\d_]*\b/,
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(?:false|true)\b/,
number: /\b(?:0x[\da-f]+|\d+(?:\.\d+)?(?:e[+-]?\d+)?)\b/i,
// Functions can be Class.method()
function: /\b[a-z_]\w*(?=\s*[({])/i,
operator: /<<|>>|[=!<>]=?|&&|\|\||[-+*/%~^&|?:]|\.{2,3}/,
punctuation: /[\[\](){}.,;]/,
};
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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