Class: IndentR

Inherits:
Object
  • Object
show all
Defined in:
lib/indentr.rb,
lib/intentr/version.rb,
lib/intentr/lang/ruby.rb

Defined Under Namespace

Classes: Ruby

Constant Summary collapse

VERSION = 
Version = "0.0.1"

Instance Method Summary collapse

Constructor Details

#initialize(buffer, opt = {:indent => 2, :lang => :ruby}) ⇒ IndentR

Returns a new instance of IndentR.



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# File 'lib/indentr.rb', line 6

def initialize(buffer, opt = {:indent => 2, :lang => :ruby})
  @lang = opt[:lang] || :ruby
  @indent = opt[:indent] || 2
  @opening_and_modifier_tokens = %w[if unless until while].to_set
  @opening_tokens = %w[begin case class def for module do {].to_set
  @closing_tokens = %w[end }].to_set
  @separator = [';', :operator]
  
  @coderay_proxy = CodeRay.scan(buffer, @lang)
end

Instance Method Details

#buffer_tokens ⇒ Object 



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# File 'lib/indentr.rb', line 17

def buffer_tokens
  buf_t = []
  index = 0
  slice = nil
  @coderay_proxy.each do |item|
    if 1 == index % 2
      buf_t << [slice, item]
    else
      slice = item
    end
    index += 1
  end
  
  return buf_t
end

#code ⇒ Object 



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# File 'lib/indentr.rb', line 33

def code
  
  indent_tokens = []
  indent = 0
  newline = false
  buffer_tokens.each {|token, kind|

    if kind == :keyword || kind == :operator
      if @closing_tokens.include?(token)
        indent -= 1
      end
    end

    if kind == :space && token == "\n"
      indent_tokens << token
      newline = true
    elsif kind == :space
      if newline
        indent_tokens << (" " * indent * @indent)
      else
        indent_tokens << token
      end
  
      newline = false
    else
  
      if newline
        indent_tokens << (" " * indent * @indent) + token
      else
        indent_tokens << token
      end
      newline = false
    end


    if kind == :keyword || kind == :operator
      if @opening_tokens.include?(token) || \
          @opening_and_modifier_tokens.include?(token)
        indent += 1
      end
    end
  }
  
  indent_tokens.join("")
end