Class: RuboCop::Cop::Style::RedundantException

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Defined in:
lib/rubocop/cop/style/redundant_exception.rb

Overview

This cop checks for RuntimeError as the argument of raise/fail.

It checks for code like this:

Examples:

# Bad
raise RuntimeError, 'message'

# Bad
raise RuntimeError.new('message')

# Good
raise 'message'

Constant Summary collapse

MSG_1 =
'Redundant `RuntimeError` argument can be removed.'
MSG_2 =
'Redundant `RuntimeError.new` call can be replaced with ' \
'just the message.'
RESTRICT_ON_SEND =
%i[raise fail].freeze

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods inherited from 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_new_investigation, #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

#fix_compact(node) ⇒ Object


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# File 'lib/rubocop/cop/style/redundant_exception.rb', line 48

def fix_compact(node)
  compact?(node) do |new_call, message|
    add_offense(node, message: MSG_2) do |corrector|
      corrector.replace(new_call, message.source)
    end
  end
end

#fix_exploded(node) ⇒ Object


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# File 'lib/rubocop/cop/style/redundant_exception.rb', line 34

def fix_exploded(node)
  exploded?(node) do |command, message|
    add_offense(node, message: MSG_1) do |corrector|
      if node.parenthesized?
        corrector.replace(node,
                          "#{command}(#{message.source})")
      else
        corrector.replace(node,
                          "#{command} #{message.source}")
      end
    end
  end
end

#on_send(node) ⇒ Object

Switch `raise RuntimeError, 'message'` to `raise 'message'`, and `raise RuntimeError.new('message')` to `raise 'message'`.


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# File 'lib/rubocop/cop/style/redundant_exception.rb', line 30

def on_send(node)
  fix_exploded(node) || fix_compact(node)
end