Class: Rubocop::Cop::Lint::ShadowingOuterLocalVariable
- Includes:
- VariableInspector
- Defined in:
- lib/rubocop/cop/lint/shadowing_outer_local_variable.rb
Overview
This cop looks for use of the same name as outer local variables
for block arguments or block local variables.
This is a mimic of the warning
"shadowing outer local variable - foo" from ruby -cw
.
Constant Summary collapse
- MSG =
'Shadowing outer local variable - %s'
Constants included from VariableInspector
VariableInspector::ARGUMENT_DECLARATION_TYPES, VariableInspector::BLOCK_ARGUMENT_DECLARATION_TYPE, VariableInspector::BLOCK_LOCAL_VARIABLE_DECLARATION_TYPE, VariableInspector::DECLARATION_TYPES, VariableInspector::LOGICAL_OPERATOR_ASSIGNMENT_TYPES, VariableInspector::LOOP_TYPES, VariableInspector::METHOD_ARGUMENT_DECLARATION_TYPES, VariableInspector::MULTIPLE_ASSIGNMENT_TYPE, VariableInspector::OPERATOR_ASSIGNMENT_TYPES, VariableInspector::POST_CONDITION_LOOP_TYPES, VariableInspector::REGEXP_NAMED_CAPTURE_TYPE, VariableInspector::RESCUE_TYPE, VariableInspector::SCOPE_TYPES, VariableInspector::TWISTED_SCOPE_TYPES, VariableInspector::VARIABLE_ASSIGNMENT_TYPE, VariableInspector::VARIABLE_ASSIGNMENT_TYPES, VariableInspector::VARIABLE_REFERENCE_TYPE, VariableInspector::ZERO_ARITY_SUPER_TYPE
Constants inherited from Cop
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offences, #processed_source
Instance Method Summary collapse
Methods included from VariableInspector
#after_declaring_variable, #after_entering_scope, #after_leaving_scope, #before_entering_scope, #before_leaving_scope, #dispatch_node, #inspect_variables, #inspect_variables_in_scope, #mark_assignments_as_referenced_in_loop, #process_children, #process_loop, #process_node, #process_regexp_named_captures, #process_rescue, #process_scope, #process_variable_assignment, #process_variable_declaration, #process_variable_multiple_assignment, #process_variable_operator_assignment, #process_variable_referencing, #process_zero_arity_super, #scan, #scanned_node?, #scanned_nodes, #skip_children!, #variable_table
Methods inherited from Cop
#add_offence, all, #autocorrect?, #autocorrect_action, #convention, #cop_config, #cop_name, cop_name, cop_type, #debug?, #ignore_node, inherited, #initialize, lint?, #message, rails?, style?, #warning
Constructor Details
This class inherits a constructor from Rubocop::Cop::Cop
Instance Method Details
#before_declaring_variable(variable) ⇒ Object
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# File 'lib/rubocop/cop/lint/shadowing_outer_local_variable.rb', line 19 def before_declaring_variable(variable) return if variable.name.to_s.start_with?('_') outer_local_variable = variable_table.find_variable(variable.name) return unless outer_local_variable = sprintf(MSG, variable.name) warning(variable.declaration_node, :expression, ) end |
#investigate(processed_source) ⇒ Object
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# File 'lib/rubocop/cop/lint/shadowing_outer_local_variable.rb', line 15 def investigate(processed_source) inspect_variables(processed_source.ast) end |