Module: Rouge::Lexers

Defined in:
lib/rouge/lexers/c.rb,
lib/rouge/lexers/r.rb,
lib/rouge/lexers/go.rb,
lib/rouge/lexers/io.rb,
lib/rouge/lexers/cpp.rb,
lib/rouge/lexers/css.rb,
lib/rouge/lexers/erb.rb,
lib/rouge/lexers/ini.rb,
lib/rouge/lexers/lua.rb,
lib/rouge/lexers/php.rb,
lib/rouge/lexers/sed.rb,
lib/rouge/lexers/sql.rb,
lib/rouge/lexers/tcl.rb,
lib/rouge/lexers/tex.rb,
lib/rouge/lexers/xml.rb,
lib/rouge/lexers/conf.rb,
lib/rouge/lexers/diff.rb,
lib/rouge/lexers/haml.rb,
lib/rouge/lexers/html.rb,
lib/rouge/lexers/http.rb,
lib/rouge/lexers/java.rb,
lib/rouge/lexers/llvm.rb,
lib/rouge/lexers/make.rb,
lib/rouge/lexers/perl.rb,
lib/rouge/lexers/ruby.rb,
lib/rouge/lexers/rust.rb,
lib/rouge/lexers/sass.rb,
lib/rouge/lexers/scss.rb,
lib/rouge/lexers/text.rb,
lib/rouge/lexers/toml.rb,
lib/rouge/lexers/viml.rb,
lib/rouge/lexers/yaml.rb,
lib/rouge/lexers/nginx.rb,
lib/rouge/lexers/shell.rb,
lib/rouge/lexers/csharp.rb,
lib/rouge/lexers/elixir.rb,
lib/rouge/lexers/erlang.rb,
lib/rouge/lexers/factor.rb,
lib/rouge/lexers/groovy.rb,
lib/rouge/lexers/prolog.rb,
lib/rouge/lexers/puppet.rb,
lib/rouge/lexers/python.rb,
lib/rouge/lexers/racket.rb,
lib/rouge/lexers/scheme.rb,
lib/rouge/lexers/clojure.rb,
lib/rouge/lexers/gherkin.rb,
lib/rouge/lexers/haskell.rb,
lib/rouge/lexers/markdown.rb,
lib/rouge/lexers/smalltalk.rb,
lib/rouge/lexers/handlebars.rb,
lib/rouge/lexers/javascript.rb,
lib/rouge/lexers/common_lisp.rb,
lib/rouge/lexers/sass/common.rb,
lib/rouge/lexers/coffeescript.rb,
lib/rouge/lexers/lua/builtins.rb,
lib/rouge/lexers/php/builtins.rb,
lib/rouge/lexers/viml/keywords.rb,
lib/rouge/lexers/gherkin/keywords.rb,
lib/rouge/lexers/literate_haskell.rb,
lib/rouge/lexers/literate_coffeescript.rb

Defined Under Namespace

Classes: C, CSS, CSharp, Clojure, Coffeescript, CommonLisp, Conf, Cpp, Diff, ERB, Elixir, Erlang, Factor, Gherkin, Go, Groovy, HTML, HTTP, Haml, Handlebars, Haskell, INI, IO, JSON, Java, Javascript, LLVM, LiterateCoffeescript, LiterateHaskell, Lua, Make, Markdown, Nginx, PHP, Perl, Prolog, Puppet, Python, R, Racket, Ruby, Rust, SQL, Sass, Scheme, Scss, Sed, Shell, Smalltalk, TCL, TOML, TeX, Text, VimL, XML, YAML

Constant Summary collapse

SASS_COMMON =

shared states with SCSS TODO: make this less nasty to do

proc do
  id = /[\w-]+/

  state :content_common do
    rule /@for\b/, 'Keyword', :for
    rule /@(debug|warn|if|while)/, 'Keyword', :value
    rule /(@mixin)(\s+)(#{id})/ do
      group 'Keyword'; group 'Text'; group 'Name.Function'
      push :value
    end

    rule /@extend\b/, 'Keyword', :selector

    rule /(@include)(\s+)(#{id})/ do
      group 'Keyword'; group 'Text'; group 'Name.Decorator'
      push :value
    end

    rule /@#{id}/, 'Keyword', :selector

    # $variable: assignment
    rule /([$]#{id})([ \t]*)(:)/ do
      group 'Name.Variable'; group 'Text'; group 'Punctuation'
      push :value
    end
  end

  state :value do
    mixin :end_section
    rule /[ \t]+/, 'Text'
    rule /[$]#{id}/, 'Name.Variable'
    rule /url[(]/, 'Literal.String.Other', :string_url
    rule /#{id}(?=\s*[(])/, 'Name.Function'
    rule /%#{id}/, 'Name.Decorator'

    # named literals
    rule /(true|false)\b/, 'Name.Pseudo'
    rule /(and|or|not)\b/, 'Operator.Word'

    # colors and numbers
    rule /#[a-z0-9]{1,6}/i, 'Literal.Number.Hex'
    rule /-?\d+(%|[a-z]+)?/, 'Literal.Number'
    rule /-?\d*\.\d+(%|[a-z]+)?/, 'Literal.Number.Integer'

    mixin :has_strings
    mixin :has_interp

    rule /[~^*!&%<>\|[email protected]:,.\/?-]+/, 'Operator'
    rule /[\[\]()]+/, 'Punctuation'
    rule %r(/[*]), 'Comment.Multiline', :inline_comment
    rule %r(//[^\n]*), 'Comment.Single'

    # identifiers
    rule(id) do |m|
      if CSS.builtins.include? m[0]
        token 'Name.Builtin'
      elsif CSS.constants.include? m[0]
        token 'Name.Constant'
      else
        token 'Name'
      end
    end
  end

  state :has_interp do
    rule /[#][{]/, 'Literal.String.Interpol', :interpolation
  end

  state :has_strings do
    rule /"/, 'Literal.String.Double', :dq
    rule /'/, 'Literal.String.Single', :sq
  end

  state :interpolation do
    rule /}/, 'Literal.String.Interpol', :pop!
    mixin :value
  end

  state :selector do
    mixin :end_section

    mixin :has_strings
    mixin :has_interp
    rule /[ \t]+/, 'Text'
    rule /:/, 'Name.Decorator', :pseudo_class
    rule /[.]/, 'Name.Class', :class
    rule /#/, 'Name.Namespace', :id
    rule /%/, 'Name.Variable', :placeholder
    rule id, 'Name.Tag'
    rule /&/, 'Keyword'
    rule /[~^*!&\[\]()<>\|[email protected]:;,.\/?-]/, 'Operator'
  end

  state :dq do
    rule /"/, 'Literal.String.Double', :pop!
    mixin :has_interp
    rule /(\\.|#(?![{])|[^\n"#])+/, 'Literal.String.Double'
  end

  state :sq do
    rule /'/, 'Literal.String.Single', :pop!
    mixin :has_interp
    rule /(\\.|#(?![{])|[^\n'#])+/, 'Literal.String.Single'
  end

  state :string_url do
    rule /[)]/, 'Literal.String.Other', :pop!
    rule /(\\.|#(?![{])|[^\n)#])+/, 'Literal.String.Other'
    mixin :has_interp
  end

  state :selector_piece do
    mixin :has_interp
    rule(//) { pop! }
  end

  state :pseudo_class do
    rule id, 'Name.Decorator'
    mixin :selector_piece
  end

  state :class do
    rule id, 'Name.Class'
    mixin :selector_piece
  end

  state :id do
    rule id, 'Name.Namespace'
    mixin :selector_piece
  end

  state :placeholder do
    rule id, 'Name.Variable'
    mixin :selector_piece
  end

  state :for do
    rule /(from|to|through)/, 'Operator.Word'
    mixin :value
  end

  state :attr_common do
    mixin :has_interp
    rule id do |m|
      if CSS.attributes.include? m[0]
        token 'Name.Label'
      else
        token 'Name.Attribute'
      end
    end
  end

  state :attribute do
    mixin :attr_common

    rule /([ \t]*)(:)/ do
      group 'Text'; group 'Punctuation'
      push :value
    end
  end

  state :inline_comment do
    rule /(\\#|#(?=[^\n{])|\*(?=[^\n\/])|[^\n#*])+/, 'Comment.Multiline'
    mixin :has_interp
    rule %r([*]/), 'Comment.Multiline', :pop!
  end
end