module Cucumber::Core::Ast::Location

def self.from_file_colon_line(file_colon_line)
  file, raw_line = file_colon_line.match(/(.*):(\d+)/)[1..2]
  from_source_location(file, raw_line.to_i)
end

def self.from_source_location(file, line)
  file = File.expand_path(file)
  pwd = File.expand_path(Dir.pwd)
  pwd.force_encoding(file.encoding)
  if file.index(pwd)
    file = file[pwd.length+1..-1]
  elsif file =~ /.*\/gems\/(.*\.rb)$/
    file = $1
  end
  new(file, line)
end

def self.merge(*locations)
  locations.reduce do |a, b|
    a + b
  end
end

def self.new(file, raw_lines=nil)
  file || raise(ArgumentError, "file is mandatory")
  if raw_lines
    Precise.new(file, Lines.new(raw_lines))
  else
    Wildcard.new(file)
  end
end

def self.of_caller(additional_depth = 0)
  from_file_colon_line(*caller[1 + additional_depth])
end