class Spec::Runner::LineNumberQuery

def consider_example_for_best_match(example, example_group, file, line_number)
  example_file, example_line = parse_location(example.location)
  if is_best_match?(file, line_number, example_file, example_line)
    best_match.clear
    best_match[:example_group] = example_group
    best_match[:example] = example
    best_match[:line] = example_line
  end
end

def consider_example_group_for_best_match(example_group, file, line_number)
  example_group_file, example_group_line = parse_location(example_group.location)
  if is_best_match?(file, line_number, example_group_file, example_group_line)
    best_match.clear
    best_match[:example_group] = example_group
    best_match[:line] = example_group_line
  end
end

def determine_best_match(file, line_number)
  best_match.clear
  file = File.expand_path(file)
  @run_options.example_groups.each do |example_group|
    next unless example_group.location
    consider_example_group_for_best_match(example_group, file, line_number)
    example_group.examples.each do |example|
      consider_example_for_best_match(example, example_group, file, line_number)
    end
  end
end

def example_line_for(file, line_number)
  determine_best_match(file, line_number)
  best_match[:line]
end

def initialize(run_options)
  @best_match = {}
  @run_options = run_options
end

def is_best_match?(file, line_number, example_file, example_line)
  file == File.expand_path(example_file) &&
          example_line <= line_number &&
          example_line > best_match[:line].to_i
end

def parse_location(location)
  location =~ /(.*)\:(\d*)(\:|$)/
  return $1, Integer($2)
end

def spec_name_for(file, line_number)
  best_match.clear
  file = File.expand_path(file)
  determine_best_match(file, line_number)
  if best_match[:example_group]
    if best_match[:example]
      "#{best_match[:example_group].description} #{best_match[:example].description}"
    else
      best_match[:example_group].description
    end
  else
    nil
  end
end