Class: PostProcessCrystal

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_crystal_codemod/post_process_crystal.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename = "") ⇒ PostProcessCrystal

Returns a new instance of PostProcessCrystal.



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# File 'lib/ruby_crystal_codemod/post_process_crystal.rb', line 8

def initialize(filename = "")
  @filename = filename
  @contents = ""
end

Instance Attribute Details

#contents ⇒ Object (readonly)

Returns the value of attribute contents.



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# File 'lib/ruby_crystal_codemod/post_process_crystal.rb', line 2

def contents
  @contents
end

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/ruby_crystal_codemod/post_process_crystal.rb', line 2

def filename
  @filename
end

Class Method Details

.file_read_lines(path) ⇒ Object 



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# File 'lib/ruby_crystal_codemod/post_process_crystal.rb', line 4

def self.file_read_lines(path)
  File.read(path).lines.map(&:chomp)
end

Instance Method Details

#post_process_crystal ⇒ Object 



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# File 'lib/ruby_crystal_codemod/post_process_crystal.rb', line 18

def post_process_crystal
  @contents = +""
  lines = self.class.file_read_lines(@filename)

  current_lang = nil
  regex = /^\s*# ?~# (?<action>(BEGIN|END)) (?<lang>(ruby|crystal))/
  uncomment_regex = /^(?<indent>\s*)# ?/
  lines.each do |line|
    matches = regex.match(line)
    if matches
      case matches["action"]
      when "BEGIN"
        current_lang = matches["lang"]
      when "END"
        current_lang = nil
      end
      next
    end
    case current_lang
    when "ruby"
      next
    when "crystal"
      line = line.sub(uncomment_regex, "\\k<indent>")
    end

    @contents << line << "\n"
  end
end