Class: Rfactor::Code

Inherits:
Object
  • Object
show all
Defined in:
lib/rfactor/code.rb

Instance Method Summary collapse

Constructor Details

#initialize(code) ⇒ Code

Returns a new instance of Code.



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# File 'lib/rfactor/code.rb', line 5

def initialize(code)
  @code = code
  @ast = RubyParser.new.parse(code)
  @line_finder = LineFinder.new(@ast)
end

Instance Method Details

#extract_method(args) ⇒ Object 



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# File 'lib/rfactor/code.rb', line 11

def extract_method(args)
  raise ":name is required" unless args.has_key?(:name)
  
  method_lines = @line_finder.method_lines(args[:start])
  selected_lines = Range.new(args[:start], args[:end])
  
  new_code = ""
  extracted_method = ""
  added = false
  identation = 0
  
  @code.each_with_index do |line, n|
    line_number = n + 1 # not 0-based
    if line_number == method_lines.first
      identation = extract_identation_level_from line
      extracted_method << "\n#{identation}"
      extracted_method << "def #{args[:name]}()\n"
    end
    if selected_lines.include? line_number
      new_code << "#{identation}  #{args[:name]}()\n" if line_number == selected_lines.first
      extracted_method << line
    elsif line_number > method_lines.last && !added
      added = true
      new_code << extracted_method << "#{identation}end\n"
      new_code << line
    else
      new_code << line
    end
  end
  new_code << "\n#{extracted_method}#{identation}end\n" unless added
  new_code
end