Class: RuboCop::Cop::Lint::SafeNavigationChain
- Includes:
- NilMethods
- Defined in:
- lib/rubocop/cop/lint/safe_navigation_chain.rb
Overview
The safe navigation operator returns nil if the receiver is nil. If you chain an ordinary method call after a safe navigation operator, it raises NoMethodError. We should use a safe navigation operator after a safe navigation operator. This cop checks for the problem outlined above.
Constant Summary collapse
- MSG =
'Do not chain ordinary method call' \ ' after safe navigation operator.'
Constants inherited from Base
Instance Attribute Summary
Attributes inherited from Base
Instance Method Summary collapse
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
Constructor Details
This class inherits a constructor from RuboCop::Cop::Base
Instance Method Details
#on_send(node) ⇒ Object
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# File 'lib/rubocop/cop/lint/safe_navigation_chain.rb', line 39 def on_send(node) bad_method?(node) do |safe_nav, method| return if nil_methods.include?(method) method_chain = method_chain(node) location = Parser::Source::Range.new(node.source_range.source_buffer, safe_nav.source_range.end_pos, method_chain.source_range.end_pos) add_offense(location) end end |