class RuboCop::Cop::Style::NumberedParametersLimit
Detects use of an excessive amount of numbered parameters in a single block. Having too many numbered parameters can make code too cryptic and hard to read.
The cop defaults to registering an offense if there is more than 1 numbered parameter but this maximum can be configured by setting ‘Max`.
@example Max: 1 (default)
# bad foo { _1.call(_2, _3, _4) } # good foo { do_something(_1) }
Constants
- DEFAULT_MAX_VALUE
- MSG
Public Instance Methods
on_numblock(node)
click to toggle source
# File lib/rubocop/cop/style/numbered_parameters_limit.rb, line 30 def on_numblock(node) _send_node, param_count, * = *node return if param_count <= max_count parameter = max_count > 1 ? 'parameters' : 'parameter' message = format(MSG, max: max_count, parameter: parameter, count: param_count) add_offense(node, message: message) { self.max = param_count } end
Private Instance Methods
max_count()
click to toggle source
# File lib/rubocop/cop/style/numbered_parameters_limit.rb, line 41 def max_count max = cop_config.fetch('Max', DEFAULT_MAX_VALUE) # Ruby does not allow more than 9 numbered parameters [max, 9].min end