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Ruby\nDescription: Ruby is a dynamic, open source programming language with a focus on simplicity and productivity.\nWebsite: https://www.ruby-lang.org/\nAuthor: Anton Kovalyov <anton@kovalyov.net>\nContributors: Peter Leonov <gojpeg@yandex.ru>, Vasily Polovnyov <vast@whiteants.net>, Loren Segal <lsegal@soen.ca>, Pascal Hurni <phi@ruby-reactive.org>, Cedric Sohrauer <sohrauer@googlemail.com>\nCategory: common, scripting\n*/\n\nfunction ruby(hljs) {\n  const regex = hljs.regex;\n  const RUBY_METHOD_RE = '([a-zA-Z_]\\\\w*[!?=]?|[-+~]@|<<|>>|=~|===?|<=>|[<>]=?|\\\\*\\\\*|[-/+%^&*~`|]|\\\\[\\\\]=?)';\n  // TODO: move concepts like CAMEL_CASE into `modes.js`\n  const CLASS_NAME_RE = regex.either(\n    /\\b([A-Z]+[a-z0-9]+)+/,\n    // ends in caps\n    /\\b([A-Z]+[a-z0-9]+)+[A-Z]+/,\n  )\n  ;\n  const CLASS_NAME_WITH_NAMESPACE_RE = regex.concat(CLASS_NAME_RE, /(::\\w+)*/);\n  // very popular ruby built-ins that one might even assume\n  // are actual keywords (despite that not being the case)\n  const PSEUDO_KWS = [\n    \"include\",\n    \"extend\",\n    \"prepend\",\n    \"public\",\n    \"private\",\n    \"protected\",\n    \"raise\",\n    \"throw\"\n  ];\n  const RUBY_KEYWORDS = {\n    \"variable.constant\": [\n      \"__FILE__\",\n      \"__LINE__\",\n      \"__ENCODING__\"\n    ],\n    \"variable.language\": [\n      \"self\",\n      \"super\",\n    ],\n    keyword: [\n      \"alias\",\n      \"and\",\n      \"begin\",\n      \"BEGIN\",\n      \"break\",\n      \"case\",\n      \"class\",\n      \"defined\",\n      \"do\",\n      \"else\",\n      \"elsif\",\n      \"end\",\n      \"END\",\n      \"ensure\",\n      \"for\",\n      \"if\",\n      \"in\",\n      \"module\",\n      \"next\",\n      \"not\",\n      \"or\",\n      \"redo\",\n      \"require\",\n      \"rescue\",\n      \"retry\",\n      \"return\",\n      \"then\",\n      \"undef\",\n      \"unless\",\n      \"until\",\n      \"when\",\n      \"while\",\n      \"yield\",\n      ...PSEUDO_KWS\n    ],\n    built_in: [\n      \"proc\",\n      \"lambda\",\n      \"attr_accessor\",\n      \"attr_reader\",\n      \"attr_writer\",\n      \"define_method\",\n      \"private_constant\",\n      \"module_function\"\n    ],\n    literal: [\n      \"true\",\n      \"false\",\n      \"nil\"\n    ]\n  };\n  const YARDOCTAG = {\n    className: 'doctag',\n    begin: '@[A-Za-z]+'\n  };\n  const IRB_OBJECT = {\n    begin: '#<',\n    end: '>'\n  };\n  const COMMENT_MODES = [\n    hljs.COMMENT(\n      '#',\n      '$',\n      { contains: [ YARDOCTAG ] }\n    ),\n    hljs.COMMENT(\n      '^=begin',\n      '^=end',\n      {\n        contains: [ YARDOCTAG ],\n        relevance: 10\n      }\n    ),\n    hljs.COMMENT('^__END__', hljs.MATCH_NOTHING_RE)\n  ];\n  const SUBST = {\n    className: 'subst',\n    begin: /#\\{/,\n    end: /\\}/,\n    keywords: RUBY_KEYWORDS\n  };\n  const STRING = {\n    className: 'string',\n    contains: [\n      hljs.BACKSLASH_ESCAPE,\n      SUBST\n    ],\n    variants: [\n      {\n        begin: /'/,\n        end: /'/\n      },\n      {\n        begin: /\"/,\n        end: /\"/\n      },\n      {\n        begin: /`/,\n        end: /`/\n      },\n      {\n        begin: /%[qQwWx]?\\(/,\n        end: /\\)/\n      },\n      {\n        begin: /%[qQwWx]?\\[/,\n        end: /\\]/\n      },\n      {\n        begin: /%[qQwWx]?\\{/,\n        end: /\\}/\n      },\n      {\n        begin: /%[qQwWx]?</,\n        end: />/\n      },\n      {\n        begin: /%[qQwWx]?\\//,\n        end: /\\//\n      },\n      {\n        begin: /%[qQwWx]?%/,\n        end: /%/\n      },\n      {\n        begin: /%[qQwWx]?-/,\n        end: /-/\n      },\n      {\n        begin: /%[qQwWx]?\\|/,\n        end: /\\|/\n      },\n      // in the following expressions, \\B in the beginning suppresses recognition of ?-sequences\n      // where ? is the last character of a preceding identifier, as in: `func?4`\n      { begin: /\\B\\?(\\\\\\d{1,3})/ },\n      { begin: /\\B\\?(\\\\x[A-Fa-f0-9]{1,2})/ },\n      { begin: /\\B\\?(\\\\u\\{?[A-Fa-f0-9]{1,6}\\}?)/ },\n      { begin: /\\B\\?(\\\\M-\\\\C-|\\\\M-\\\\c|\\\\c\\\\M-|\\\\M-|\\\\C-\\\\M-)[\\x20-\\x7e]/ },\n      { begin: /\\B\\?\\\\(c|C-)[\\x20-\\x7e]/ },\n      { begin: /\\B\\?\\\\?\\S/ },\n      // heredocs\n      {\n        // this guard makes sure that we have an entire heredoc and not a false\n        // positive (auto-detect, etc.)\n        begin: regex.concat(\n          /<<[-~]?'?/,\n          regex.lookahead(/(\\w+)(?=\\W)[^\\n]*\\n(?:[^\\n]*\\n)*?\\s*\\1\\b/)\n        ),\n        contains: [\n          hljs.END_SAME_AS_BEGIN({\n            begin: /(\\w+)/,\n            end: /(\\w+)/,\n            contains: [\n              hljs.BACKSLASH_ESCAPE,\n              SUBST\n            ]\n          })\n        ]\n      }\n    ]\n  };\n\n  // Ruby syntax is underdocumented, but this grammar seems to be accurate\n  // as of version 2.7.2 (confirmed with (irb and `Ripper.sexp(...)`)\n  // https://docs.ruby-lang.org/en/2.7.0/doc/syntax/literals_rdoc.html#label-Numbers\n  const decimal = '[1-9](_?[0-9])*|0';\n  const digits = '[0-9](_?[0-9])*';\n  const NUMBER = {\n    className: 'number',\n    relevance: 0,\n    variants: [\n      // decimal integer/float, optionally exponential or rational, optionally imaginary\n      { begin: `\\\\b(${decimal})(\\\\.(${digits}))?([eE][+-]?(${digits})|r)?i?\\\\b` },\n\n      // explicit decimal/binary/octal/hexadecimal integer,\n      // optionally rational and/or imaginary\n      { begin: \"\\\\b0[dD][0-9](_?[0-9])*r?i?\\\\b\" },\n      { begin: \"\\\\b0[bB][0-1](_?[0-1])*r?i?\\\\b\" },\n      { begin: \"\\\\b0[oO][0-7](_?[0-7])*r?i?\\\\b\" },\n      { begin: \"\\\\b0[xX][0-9a-fA-F](_?[0-9a-fA-F])*r?i?\\\\b\" },\n\n      // 0-prefixed implicit octal integer, optionally rational and/or imaginary\n      { begin: \"\\\\b0(_?[0-7])+r?i?\\\\b\" }\n    ]\n  };\n\n  const PARAMS = {\n    variants: [\n      {\n        match: /\\(\\)/,\n      },\n      {\n        className: 'params',\n        begin: /\\(/,\n        end: /(?=\\))/,\n        excludeBegin: true,\n        endsParent: true,\n        keywords: RUBY_KEYWORDS,\n      }\n    ]\n  };\n\n  const INCLUDE_EXTEND = {\n    match: [\n      /(include|extend)\\s+/,\n      CLASS_NAME_WITH_NAMESPACE_RE\n    ],\n    scope: {\n      2: \"title.class\"\n    },\n    keywords: RUBY_KEYWORDS\n  };\n\n  const CLASS_DEFINITION = {\n    variants: [\n      {\n        match: [\n          /class\\s+/,\n          CLASS_NAME_WITH_NAMESPACE_RE,\n          /\\s+<\\s+/,\n          CLASS_NAME_WITH_NAMESPACE_RE\n        ]\n      },\n      {\n        match: [\n          /\\b(class|module)\\s+/,\n          CLASS_NAME_WITH_NAMESPACE_RE\n        ]\n      }\n    ],\n    scope: {\n      2: \"title.class\",\n      4: \"title.class.inherited\"\n    },\n    keywords: RUBY_KEYWORDS\n  };\n\n  const UPPER_CASE_CONSTANT = {\n    relevance: 0,\n    match: /\\b[A-Z][A-Z_0-9]+\\b/,\n    className: \"variable.constant\"\n  };\n\n  const METHOD_DEFINITION = {\n    match: [\n      /def/, /\\s+/,\n      RUBY_METHOD_RE\n    ],\n    scope: {\n      1: \"keyword\",\n      3: \"title.function\"\n    },\n    contains: [\n      PARAMS\n    ]\n  };\n\n  const OBJECT_CREATION = {\n    relevance: 0,\n    match: [\n      CLASS_NAME_WITH_NAMESPACE_RE,\n      /\\.new[. (]/\n    ],\n    scope: {\n      1: \"title.class\"\n    }\n  };\n\n  // CamelCase\n  const CLASS_REFERENCE = {\n    relevance: 0,\n    match: CLASS_NAME_RE,\n    scope: \"title.class\"\n  };\n\n  const RUBY_DEFAULT_CONTAINS = [\n    STRING,\n    CLASS_DEFINITION,\n    INCLUDE_EXTEND,\n    OBJECT_CREATION,\n    UPPER_CASE_CONSTANT,\n    CLASS_REFERENCE,\n    METHOD_DEFINITION,\n    {\n      // swallow namespace qualifiers before symbols\n      begin: hljs.IDENT_RE + '::' },\n    {\n      className: 'symbol',\n      begin: hljs.UNDERSCORE_IDENT_RE + '(!|\\\\?)?:',\n      relevance: 0\n    },\n    {\n      className: 'symbol',\n      begin: ':(?!\\\\s)',\n      contains: [\n        STRING,\n        { begin: RUBY_METHOD_RE }\n      ],\n      relevance: 0\n    },\n    NUMBER,\n    {\n      // negative-look forward attempts to prevent false matches like:\n      // @ident@ or $ident$ that might indicate this is not ruby at all\n      className: \"variable\",\n      begin: '(\\\\$\\\\W)|((\\\\$|@@?)(\\\\w+))(?=[^@$?])' + `(?![A-Za-z])(?![@$?'])`\n    },\n    {\n      className: 'params',\n      begin: /\\|(?!=)/,\n      end: /\\|/,\n      excludeBegin: true,\n      excludeEnd: true,\n      relevance: 0, // this could be a lot of things (in other languages) other than params\n      keywords: RUBY_KEYWORDS\n    },\n    { // regexp container\n      begin: '(' + hljs.RE_STARTERS_RE + '|unless)\\\\s*',\n      keywords: 'unless',\n      contains: [\n        {\n          className: 'regexp',\n          contains: [\n            hljs.BACKSLASH_ESCAPE,\n            SUBST\n          ],\n          illegal: /\\n/,\n          variants: [\n            {\n              begin: '/',\n              end: '/[a-z]*'\n            },\n            {\n              begin: /%r\\{/,\n              end: /\\}[a-z]*/\n            },\n            {\n              begin: '%r\\\\(',\n              end: '\\\\)[a-z]*'\n            },\n            {\n              begin: '%r!',\n              end: '![a-z]*'\n            },\n            {\n              begin: '%r\\\\[',\n              end: '\\\\][a-z]*'\n            }\n          ]\n        }\n      ].concat(IRB_OBJECT, COMMENT_MODES),\n      relevance: 0\n    }\n  ].concat(IRB_OBJECT, COMMENT_MODES);\n\n  SUBST.contains = RUBY_DEFAULT_CONTAINS;\n  PARAMS.contains = RUBY_DEFAULT_CONTAINS;\n\n  // >>\n  // ?>\n  const SIMPLE_PROMPT = \"[>?]>\";\n  // irb(main):001:0>\n  const DEFAULT_PROMPT = \"[\\\\w#]+\\\\(\\\\w+\\\\):\\\\d+:\\\\d+[>*]\";\n  const RVM_PROMPT = \"(\\\\w+-)?\\\\d+\\\\.\\\\d+\\\\.\\\\d+(p\\\\d+)?[^\\\\d][^>]+>\";\n\n  const IRB_DEFAULT = [\n    {\n      begin: /^\\s*=>/,\n      starts: {\n        end: '$',\n        contains: RUBY_DEFAULT_CONTAINS\n      }\n    },\n    {\n      className: 'meta.prompt',\n      begin: '^(' + SIMPLE_PROMPT + \"|\" + DEFAULT_PROMPT + '|' + RVM_PROMPT + ')(?=[ ])',\n      starts: {\n        end: '$',\n        keywords: RUBY_KEYWORDS,\n        contains: RUBY_DEFAULT_CONTAINS\n      }\n    }\n  ];\n\n  COMMENT_MODES.unshift(IRB_OBJECT);\n\n  return {\n    name: 'Ruby',\n    aliases: [\n      'rb',\n      'gemspec',\n      'podspec',\n      'thor',\n      'irb'\n    ],\n    keywords: RUBY_KEYWORDS,\n    illegal: /\\/\\*/,\n    contains: [ hljs.SHEBANG({ binary: \"ruby\" }) ]\n      .concat(IRB_DEFAULT)\n      .concat(COMMENT_MODES)\n      .concat(RUBY_DEFAULT_CONTAINS)\n  };\n}\n\nmodule.exports = ruby;\n"],"sourceRoot":""}