Class: Rubic::LineGroup

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

Overview

Represents program (as a set of lines)

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LineGroup

Returns a new instance of LineGroup.



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

def initialize
  @lines = {}
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/rubic.rb', line 24

def clear
  @lines = {}
end

#lines ⇒ Object 



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# File 'lib/rubic.rb', line 20

def lines
  @lines.sort_by { |line_num, _| line_num }
end

#load(file_name, with_line_numbers) ⇒ Object 



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# File 'lib/rubic.rb', line 64

def load(file_name, with_line_numbers)
  @lines = File.readlines(file_name, chomp: true)
               .each_with_index
               .map do |line, i|
    if with_line_numbers
      line_num, line = line.split(" ", 2)
      line_num = Integer(line_num)

      [line_num, line]
    else
      [i + 1, line]
    end
  end.to_h
end

#resize(gap) ⇒ Object 



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# File 'lib/rubic.rb', line 36

def resize(gap)
  @lines =
    @lines
    .sort_by { |line_num, _| line_num }
    .each_with_index
    .map { |hsh, i| [(i + 1) * gap, hsh[1]] }
    .to_h
end

#save(file_name, with_line_numbers) ⇒ Object 



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# File 'lib/rubic.rb', line 57

def save(file_name, with_line_numbers)
  File.open(file_name, "w") do |file|
    file.write(stringify(with_line_numbers))
    file.write("\n")
  end
end

#stringify(with_line_numbers) ⇒ Object 



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# File 'lib/rubic.rb', line 45

def stringify(with_line_numbers)
  lines = @lines.map { |k, v| [k, v] }

  lines.sort_by { |k, _| k }.map do |line_num, line|
    if with_line_numbers
      "#{line_num} #{line}"
    else
      line
    end
  end.join("\n")
end

#update(line_num, expr) ⇒ Object 



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# File 'lib/rubic.rb', line 28

def update(line_num, expr)
  if expr.nil?
    @lines.delete(line_num)
  else
    @lines[line_num] = expr
  end
end