class RuboCop::Cop::Style::RedundantFileExtensionInRequire

Checks for the presence of superfluous ‘.rb` extension in the filename provided to `require` and `require_relative`.

NOTE: If the extension is omitted, Ruby tries adding ‘.rb’, ‘.so’,

and so on to the name until found. If the file named cannot be found,
a `LoadError` will be raised.
There is an edge case where `foo.so` file is loaded instead of a `LoadError`
if `foo.so` file exists when `require 'foo.rb'` will be changed to `require 'foo'`,
but that seems harmless.

@example

# bad
require 'foo.rb'
require_relative '../foo.rb'

# good
require 'foo'
require 'foo.so'
require_relative '../foo'
require_relative '../foo.so'

Constants

MSG
RESTRICT_ON_SEND

Public Instance Methods

on_send(node) click to toggle source
# File lib/rubocop/cop/style/redundant_file_extension_in_require.rb, line 39
def on_send(node)
  require_call?(node) do |name_node|
    return unless name_node.value.end_with?('.rb')

    extension_range = extension_range(name_node)

    add_offense(extension_range) do |corrector|
      corrector.remove(extension_range)
    end
  end
end

Private Instance Methods

extension_range(name_node) click to toggle source
# File lib/rubocop/cop/style/redundant_file_extension_in_require.rb, line 53
def extension_range(name_node)
  end_of_path_string = name_node.source_range.end_pos

  range_between(end_of_path_string - 4, end_of_path_string - 1)
end