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]
Constants inherited from Cop
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offences, #processed_source
Instance Method Summary collapse
Methods inherited from Cop
#add_offence, all, #autocorrect?, #convention, #cop_config, cop_name, #cop_name, cop_type, #debug?, #ignore_node, inherited, #initialize, lint?, #message, non_rails, rails?, style?, #support_autocorrect?, #warning
Constructor Details
This class inherits a constructor from Rubocop::Cop::Cop
Instance Method Details
#on_begin(node) ⇒ Object
15 16 17 18 19 20 21 22 23 |
# 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) warning(e2, :expression) end end end |