class RuboCop::Cop::Style::TrivialAccessors

Looks for trivial reader/writer methods, that could have been created with the attr_* family of functions automatically. ‘to_ary`, `to_a`, `to_c`, `to_enum`, `to_h`, `to_hash`, `to_i`, `to_int`, `to_io`, `to_open`, `to_path`, `to_proc`, `to_r`, `to_regexp`, `to_str`, `to_s`, and `to_sym` methods are allowed by default. These are customizable with `AllowedMethods` option.

@example

# bad
def foo
  @foo
end

def bar=(val)
  @bar = val
end

def self.baz
  @baz
end

# good
attr_reader :foo
attr_writer :bar

class << self
  attr_reader :baz
end

@example ExactNameMatch: true (default)

# good
def name
  @other_name
end

@example ExactNameMatch: false

# bad
def name
  @other_name
end

@example AllowPredicates: true (default)

# good
def foo?
  @foo
end

@example AllowPredicates: false

# bad
def foo?
  @foo
end

# good
attr_reader :foo

@example AllowDSLWriters: true (default)

# good
def on_exception(action)
  @on_exception=action
end

@example AllowDSLWriters: false

# bad
def on_exception(action)
  @on_exception=action
end

# good
attr_writer :on_exception

@example IgnoreClassMethods: false (default)

# bad
def self.foo
  @foo
end

# good
class << self
  attr_reader :foo
end

@example IgnoreClassMethods: true

# good
def self.foo
  @foo
end

@example AllowedMethods: [‘allowed_method’]

# good
def allowed_method
  @foo
end