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/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

Instance Attribute Summary

Attributes inherited from RuboCop::Cop::Base

#config, #processed_source

Instance Method Summary collapse

Methods inherited from RuboCop::Cop::Base

#active_support_extensions_enabled?, #add_global_offense, #add_offense, #always_autocorrect?, autocorrect_incompatible_with, badge, #begin_investigation, callbacks_needed, #callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #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, #parser_engine, #ready, #relevant_file?, requires_gem, #string_literals_frozen_by_default?, 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/bundler/duplicated_gem.rb', line 45

def on_new_investigation
  return if processed_source.blank?

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