Class: Rubocop::Cop::Lint::UnreachableCode
- Defined in:
- lib/rubocop/cop/lint/unreachable_code.rb
Overview
This cop checks for unreachable code. The check are based on the presence of flow of control statement in non-final position in begin(implicit) blocks.
Constant Summary collapse
- MSG =
'Unreachable code detected.'
- NODE_TYPES =
[:return, :next, :break, :retry, :redo]
- FLOW_COMMANDS =
[:throw, :raise, :fail]
Instance Attribute Summary
Attributes inherited from Cop
#autocorrect, #debug, #disabled_lines, #offences
Instance Method Summary collapse
Methods inherited from Cop
#add_offence, #autocorrect_action, cop_name, cop_type, #do_autocorrect, #ignore_node, inherited, #initialize, #inspect, lint?, #name, rails?, style?
Constructor Details
This class inherits a constructor from Rubocop::Cop::Cop
Instance Method Details
#on_begin(node) ⇒ Object
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# File 'lib/rubocop/cop/lint/unreachable_code.rb', line 15 def on_begin(node) expressions = *node expressions.each_cons(2) do |e1, e2| if NODE_TYPES.include?(e1.type) || flow_command?(e1) add_offence(:warning, e2.loc.expression, MSG) end end super end |