Module: LiterateRuby

Defined in:
lib/literate_ruby.rb,
lib/literate_ruby/version.rb

Constant Summary collapse

VERSION = 
"0.0.1"

Class Method Summary collapse

Class Method Details

.load(path) ⇒ Object

See comment in the test file def self.require(path)

full_path = path + ".lrb"
if $".include?(full_path)
  false
else
  if load(full_path)
    $" << full_path
  else
    raise LoadError
  end
end

end



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# File 'lib/literate_ruby.rb', line 16

def self.load(path)
  lines = parse(File.new(path))

  lines.find_all {|(type, line_group)| type == :code && !line_group.empty?}.each do |(_, line_group)|
    Kernel.eval(
      line_group.map {|(line_no, line)| line}.join(""), 
      TOPLEVEL_BINDING, 
      path, 
      line_group[0][0]
    )
  end

  lines
end

.parse(io) ⇒ Object 



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# File 'lib/literate_ruby.rb', line 31

def self.parse(io)
  state = :open
  lines = []
  buffer = nil
  
  io.readlines.each_with_index do |line, i|
    case line
    when /^>/
      clean_line = line.sub(/^>/, "")
      case state
      when :open
        state = :in_code
        buffer = []
        buffer << [i + 1, clean_line]
      when :in_code
        buffer << [i + 1, clean_line]
      when :in_code_block
        buffer << [i + 1, clean_line]
      when :in_data
        lines << [:data, buffer]
        buffer = []
        
        state = :in_code
        buffer << [i + 1, clean_line]
      end
    when /^=begin_code/
      case state
      when :open
        buffer = []
      when :in_code
        lines << [:code, buffer]
        buffer = []
      when :in_code_block
        buffer << [i + 1, line]
      when :in_data
        lines << [:data, buffer]
        buffer = []
      end
      state = :in_code_block
    when /^=end_code/
      case state
      when :open
        buffer = []
        state = :in_data
      when :in_code
        lines << [:code, buffer]
        buffer = []
        
        state = :in_data
      when :in_code_block
        lines << [:code, buffer]
        buffer = []
        
        state = :in_data
      when :in_data
        # no-op
      end
    else
      case state
      when :open
        buffer = []
        state = :in_data
        buffer << [i + 1, line]
      when :in_code
        lines << [:code, buffer]
        buffer = []
        
        state = :in_data
        buffer << [i + 1, line]
      when :in_code_block
        buffer << [i + 1, line]
      when :in_data
        buffer << [i + 1, line]
      end
    end
  end

  case state
  when :open
    # no-op
  when :in_code
    lines << [:code, buffer] unless buffer.empty?
    buffer = nil
  when :in_code_block
    lines << [:code, buffer] unless buffer.empty?
    buffer = nil
  when :in_data
    lines << [:data, buffer] unless buffer.empty?
    buffer = nil
  end

  lines
end