Class: RuboCop::Cop::Bundler::DuplicatedGem

Inherits:
RuboCop::Cop::Base show all
Includes:
RangeHelp
Defined in:
lib/rubocop/cop/bundler/duplicated_gem.rb

Overview

A Gem’s requirements should be listed only once in a Gemfile.

Examples:

# bad
gem 'rubocop'
gem 'rubocop'

# bad
group :development do
  gem 'rubocop'
end

group :test do
  gem 'rubocop'
end

# good
group :development, :test do
  gem 'rubocop'
end

# good
gem 'rubocop', groups: [:development, :test]

# good - conditional declaration
if Dir.exist?(local)
  gem 'rubocop', path: local
elsif ENV['RUBOCOP_VERSION'] == 'master'
  gem 'rubocop', git: 'https://github.com/rubocop-hq/rubocop.git'
else
  gem 'rubocop', '~> 0.90.0'
end

Constant Summary collapse

MSG = 
'Gem `%<gem_name>s` requirements already given on line '\
'%<line_of_first_occurrence>d of the Gemfile.'

Constants inherited from RuboCop::Cop::Base

RuboCop::Cop::Base::RESTRICT_ON_SEND

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from RuboCop::Cop::Base

#config, #processed_source

Instance Method Summary collapse

Methods inherited from RuboCop::Cop::Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, badge, 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, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_other_file, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from AutocorrectLogic

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

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

add_parentheses, args_begin, args_end, begins_its_line?, comment_line?, comment_lines?, double_quotes_required?, escape_string, first_part_of_call_chain, indent, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, trim_string_interporation_escape_character

Methods included from PathUtil

absolute?, hidden_dir?, hidden_file?, hidden_file_in_not_hidden_dir?, match_path?, maybe_hidden_file?, relative_path, smart_path

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/bundler/duplicated_gem.rb', line 44

def on_new_investigation
  return if processed_source.blank?

  duplicated_gem_nodes.each do |nodes|
    nodes[1..-1].each do |node|
      register_offense(
        node,
        node.first_argument.to_a.first,
        nodes.first.first_line
      )
    end
  end
end