class RubbyCop::Cop::Lint::ShadowingOuterLocalVariable

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`.

@example

# bad

def some_method
  foo = 1

  2.times do |foo| # shadowing outer `foo`
    do_something(foo)
  end
end

@example

# good

def some_method
  foo = 1

  2.times do |bar|
    do_something(bar)
  end
end

Constants

MSG

Public Instance Methods

before_declaring_variable(variable, variable_table) click to toggle source
# File lib/rubbycop/cop/lint/shadowing_outer_local_variable.rb, line 41
def before_declaring_variable(variable, variable_table)
  return if variable.should_be_unused?

  outer_local_variable = variable_table.find_variable(variable.name)
  return unless outer_local_variable

  message = format(MSG, variable.name)
  add_offense(variable.declaration_node, :expression, message)
end
join_force?(force_class) click to toggle source
# File lib/rubbycop/cop/lint/shadowing_outer_local_variable.rb, line 37
def join_force?(force_class)
  force_class == VariableForce
end