File: ruby.lang

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Description="Ruby"

Categories = {"script"}

Identifiers=[[ [a-zA-Z_][\w\-]* ]]

Digits=[[ (?:0x|0X|0b)[0-9a-fA-F]+|\d*[\.\_]?\d+(?:[eE][\-\+]\d+)?[lLuU]? ]]

Keywords={
  { Id=1,
    List={"alias", "and", "begin", "begin", "break", "case", "class", "def",
          "defined", "loop", "do", "else", "elsif", "end", "end", "ensure",
          "false", "for", "if", "in", "module", "next", "nil", "not", "or",
          "redo", "rescue", "retry", "return", "require", "self", "super",
          "then", "true", "undef", "unless", "until", "when", "while",
          "yield", "true", "false", "nil", "stdin", "stdout", "stderr", "env",
          "argf", "argv", "data", "version", "ruby-release-date",
          "ruby-platform", "include", "extend", "eval", "private", "raise", "throw"},
  },
  { Id=3,
    List = {"TRUE","FALSE","NIL","STDIN","STDOUT","STDERR","ENV","ARGF","ARGV",
            "DATA","RUBY_VERSION","RUBY_RELEASE_DATE","RUBY_PLATFORM"}
  },
  { Id=2,
    Regex=[[[\$\@][\/\w]+]],
  },

  -- see OnStateChange below
  { Id=3,
    Regex=[[m?\/.*?\/|(s|tr)\/.*?\/.*?\/[cegimosx]*]],
    Group=0,
  },
  { Id=3,
    Regex=[[\:\:?\w+]],
  },
  { Id=4,
    Regex=[[(\w+)\s*\(]],
  },

  --see OnStateChange
  { Id=5,
    Regex = [[ [#]\{[^}]*?\} ]],
  },
}

-- hereDoc opening delimiter, see OnStateChange to handle end of string
Strings={
  Delimiter=[["|'|`|<<[\-~"'`]?[\w_]+["'`]?]],
  Interpolation = [[ [%]\{[^}]*?\} ]],

  DelimiterPairs= {
    { Open=[[%q\(]], Close=[[\)]] },
    { Open=[[%Q\(]], Close=[[\)]] },

    { Open=[[%Q\!]], Close=[[\!]] },
    { Open=[[%Q\+]], Close=[[\+]] },
    { Open=[[%Q\[]], Close=[=[ \] ]=] },


    { Open=[[%\(]], Close=[[\)]] },
    { Open=[[%x\(]], Close=[[\)]] },
    { Open=[[%q\{]], Close=[[\}]] },
    { Open=[[%Q\{]], Close=[[\}]] },
    { Open=[[%\{]], Close=[[\}]] },
    { Open=[[%x\{]], Close=[[\}]] },
  }

}

IgnoreCase=false

Comments={
  { Block=false,
    Delimiter= { [[#]] },
  },
  { Block=true,
    Nested=false,
    Delimiter= { [[\=begin]],[[\=end]] }
  }
}

Operators=[[\(|\)|\[|\]|\{|\}|\,|\;|\:|\.|\&|<|>|\!|\-|\+|\/|\*|\=|\?|\%|\|]]

-- resolve issue with # which starts comments and extrapolation sequences in strings
function OnStateChange(oldState, newState, token, groupID)



  if oldState~=HL_STRING and newState==HL_INTERPOLATION then
    return HL_REJECT
  end

  if oldState==HL_STRING and token==hereDoc then
    hereDoc = nil
    return HL_STRING_END
  end

  if hereDoc~=nil then
    return HL_STRING
  end

  --resolve issue with #{} sequence within strings
  if oldState==HL_STRING and newState==HL_KEYWORD and groupID==5 then
    return HL_INTERPOLATION
  end

  -- resolve issue with regex expression which spans strings like "</i>" + VAR + "</i>"
  if string.sub(token,1,1)=="/" and oldState==HL_STRING and newState==HL_KEYWORD then
    return HL_REJECT
  end

  --recognize hereDoc multine strings (including squiggly heredoc)
  --do not clear hereDoc if token is ",' or `
  if (oldState==HL_STANDARD or oldState==HL_STRING) and newState==HL_STRING
      and not string.find("\"'`", token) then
      hereDoc = string.match(token, "<<[%-~\"'`]?([%a_]+)" )
  end

  -- fix quoted string termination
  --if oldState~=HL_STRING  then
  --   qString=0
  -- end

  if newState==HL_STRING and (token=="%q(" or token=="%Q(" or token=="%(" or token=="%x(" ) then
      qString=1
      return HL_STRING
  end

  if newState==HL_STRING and (token=="%q{" or token=="%Q{" or token=="%{" or token=="%x{" ) then
      qString=2
      return HL_STRING
  end

  if newState==HL_STRING and  token=="%Q!"  then
      qString=3
      return HL_STRING
  end

  if newState==HL_STRING and  token=="%Q["  then
    qString=4
    return HL_STRING
  end

  if newState==HL_STRING and  token=="%Q+"  then
    qString=5
    return HL_STRING
  end

  if oldState==HL_STRING and qString==1 and token==")" then
    qString=0
    return HL_STRING_END
  end

  if oldState==HL_STRING and qString==2 and token=="}" then
    qString=0
    return HL_STRING_END
  end

  if oldState==HL_STRING and qString==3 and token=="!" then
    qString=0
    return HL_STRING_END
  end

  if oldState==HL_STRING and qString==4 and token=="]" then
    qString=0
    return HL_STRING_END
  end

  if oldState==HL_STRING and qString==5 and token=="+" then
    qString=0
    return HL_STRING_END
  end

  -- https://fossies.org/linux/misc/puppet-5.3.2.tar.gz/puppet-5.3.2/lib/puppet/indirector/hiera.rb?m=t

  if token==")" or token=="}"  or token=="]" or token=="{"  and oldState~=HL_STRING then
    return HL_OPERATOR
  end
  return newState
end