Class: RubyCodeAI

Inherits:
BaseCodeAI show all
Defined in:
lib/asker/ai/code/ruby_code_ai.rb

Instance Attribute Summary

Attributes inherited from BaseCodeAI

#questions

Instance Method Summary collapse

Methods inherited from BaseCodeAI

#clone_array, #filename, #lines, #lines_to_html, #lines_to_s, #make_questions, #name, #num, #process?, #type

Constructor Details

#initialize(code) ⇒ RubyCodeAI

Returns a new instance of RubyCodeAI.



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# File 'lib/asker/ai/code/ruby_code_ai.rb', line 6

def initialize(code)
  @reduce = 1
  @reduce = 4 if code.lines.size > 25
  @lang = LangFactory.instance.get("ruby")
  super code
end

Instance Method Details

#make_comment_error ⇒ Object

Make errors about comments



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# File 'lib/asker/ai/code/ruby_code_ai.rb', line 15

def make_comment_error
  questions = []
  # error_lines = []
  @lines.each_with_index do |line, index|
    if line.strip.start_with?("#")
      lines = clone_array @lines
      lines[index].sub!("#", "").strip!

      q = Question.new(:short)
      q.name = "#{name}-#{num}-uncomment"
      q.text = @lang.text_for(:code1, lines_to_html(lines))
      q.shorts << (index + 1)
      q.feedback = "Comment symbol removed"
      questions << q
    elsif line.strip.size > 0
      lines = clone_array @lines
      lines[index] = "# " + lines[index]

      q = Question.new(:short)
      q.name = "#{name}-#{num}-comment"
      q.text = @lang.text_for(:code1, lines_to_html(lines))
      q.shorts << (index + 1)
      q.feedback = "Comment symbol added"
      questions << q
    end
  end
  questions.shuffle[0, @lines.size / @reduce]
end

#make_no_error_changes ⇒ Object

Make questions without errors



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# File 'lib/asker/ai/code/ruby_code_ai.rb', line 46

def make_no_error_changes
  questions = []
  empty_lines = []
  used_lines = []
  @lines.each_with_index do |line, index|
    if line.strip.size.zero?
      empty_lines << index
    else
      used_lines << index
    end
  end

  used_lines.each do |index|
    lines = clone_array(@lines)
    lines.insert(index, " " * (rand(4).to_i + 1))
    if @lines.size < 4 || rand(2) == 0
      q = Question.new(:short)
      q.name = "#{name}-#{num}-codeok"
      q.text = @lang.text_for(:code1, lines_to_html(lines))
      q.shorts << "0"
      q.feedback = "Code is OK"
      questions << q
    else
      q = Question.new(:choice)
      q.name = "#{name}-#{num}-codeok"
      q.text = @lang.text_for(:code2, lines_to_html(lines))
      others = (1..@lines.size).to_a.shuffle!
      q.good = "0"
      q.bads << others[0].to_s
      q.bads << others[1].to_s
      q.bads << others[2].to_s
      q.feedback = "Code is OK"
    end
  end

  questions.shuffle[0, @lines.size / @reduce]
end

#make_syntax_error ⇒ Object

Make questions with syntax errors



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# File 'lib/asker/ai/code/ruby_code_ai.rb', line 86

def make_syntax_error
  questions = []

  @lang.mistakes.each_pair do |key, values|
    error_lines = []
    @lines.each_with_index do |line, index|
      error_lines << index if line.include?(key.to_s)
    end

    v = values.split(",")
    v.each do |value|
      error_lines.each do |index|
        lines = clone_array(@lines)
        lines[index].sub!(key.to_s, value)
        if @lines.size < 4 || rand(2) == 0
          q = Question.new(:short)
          q.name = "#{name}-#{num}-syntaxerror"
          q.text = @lang.text_for(:code1, lines_to_html(lines))
          q.shorts << (index + 1)
          q.feedback = "Syntax error: '#{value}' must be '#{key}'"
        else
          q = Question.new(:choice)
          q.name = "#{name}-#{num}-syntaxerror"
          q.text = @lang.text_for(:code2, lines_to_html(lines))
          others = (1..@lines.size).to_a.shuffle!
          others.delete(index + 1)
          q.good = (index + 1).to_s
          q.bads << others[0].to_s
          q.bads << others[1].to_s
          q.bads << others[2].to_s
          q.feedback = "Syntax error: '#{value}' must be '#{key}'"
        end
        questions << q
      end
    end
  end
  questions.shuffle[0, @lines.size / @reduce]
end

#make_variable_error ⇒ Object

Make questions with variable errors



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# File 'lib/asker/ai/code/ruby_code_ai.rb', line 127

def make_variable_error
  questions = []
  # error_lines = []
  @lines.each_with_index do |line, index|
    # Search Variable assignment
    m = /\s*(\w*)\s*=\w*/.match(line)
    i = []
    unless m.nil?
      varname = (m.values_at 1)[0]
      # Search used Variable
      @lines.each_with_index do |line2, index2|
        next if index >= index2
        i << index2 if line2.include?(varname)
      end
    end
    next if i.size == 0
    i.shuffle!
    i.each do |k|
      lines = clone_array @lines
      temp = lines[index]
      lines[index] = lines[k]
      lines[k] = temp

      if rand(2) == 0
        q = Question.new(:short)
        q.name = "#{name}-#{num}-variable"
        q.text = @lang.text_for(:code1, lines_to_html(lines))
        q.shorts << (index + 1)
        q.feedback = "Variable error! Swapped lines #{index + 1} with #{k + 1}"
      else
        q = Question.new(:choice)
        q.name = "#{name}-#{num}-variable"
        q.text = @lang.text_for(:code2, lines_to_html(lines))
        others = (1..@lines.size).to_a.shuffle!
        others.delete(index + 1)
        q.good = (index + 1).to_s
        q.bads << others[0].to_s
        q.bads << others[1].to_s
        q.bads << others[2].to_s
        q.feedback = "Variable error! Swapped lines #{index + 1} with #{k + 1}"
      end
      questions << q
    end
  end
  questions.shuffle[0, @lines.size / @reduce]
end