Class: RuboCop::Cop::Lint::OrderedMagicComments

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
FrozenStringLiteral
Defined in:
lib/rubocop/cop/lint/ordered_magic_comments.rb

Overview

Checks the proper ordering of magic comments and whether a magic comment is not placed before a shebang.

Examples:

# bad

# frozen_string_literal: true
# encoding: ascii
p [''.frozen?, ''.encoding] #=> [true, #<Encoding:UTF-8>]

# good

# encoding: ascii
# frozen_string_literal: true
p [''.frozen?, ''.encoding] #=> [true, #<Encoding:US-ASCII>]

# good

#!/usr/bin/env ruby
# encoding: ascii
# frozen_string_literal: true
p [''.frozen?, ''.encoding] #=> [true, #<Encoding:US-ASCII>]

Cop Safety Information:

  • This cop’s autocorrection is unsafe because file encoding may change.

Constant Summary collapse

MSG = 
'The encoding magic comment should precede all other magic comments.'

Constants included from FrozenStringLiteral

FrozenStringLiteral::FROZEN_STRING_LITERAL, FrozenStringLiteral::FROZEN_STRING_LITERAL_ENABLED

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods included from FrozenStringLiteral

frozen_string_literal_comment_exists?

Methods inherited from Base

#active_support_extensions_enabled?, #add_global_offense, #add_offense, autocorrect_incompatible_with, badge, #begin_investigation, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, #inspect, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_other_file, #parse, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #autocorrect_with_disable_uncorrectable?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

silence_warnings

Constructor Details

This class inherits a constructor from RuboCop::Cop::Base

Instance Method Details

#on_new_investigation ⇒ Object 



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# File 'lib/rubocop/cop/lint/ordered_magic_comments.rb', line 38

def on_new_investigation
  return if processed_source.buffer.source.empty?

  encoding_line, frozen_string_literal_line = magic_comment_lines

  return unless encoding_line && frozen_string_literal_line
  return if encoding_line < frozen_string_literal_line

  range = processed_source.buffer.line_range(encoding_line + 1)

  add_offense(range) do |corrector|
    autocorrect(corrector, encoding_line, frozen_string_literal_line)
  end
end