class Ameba::Rule::Style::IsANil

Overview

A rule that disallows calls to is_a?(Nil) in favor of nil?.

This is considered bad:

var.is_a?(Nil)

And needs to be written as:

var.nil?

YAML configuration example:

Style/IsANil:
  Enabled: true

Included Modules

Defined in:

ameba/rule/style/is_a_nil.cr

Constant Summary

MSG = "Use `nil?` instead of `is_a?(Nil)`"
PATH_NIL_NAMES = ["Nil"] of ::String

Constructors

Instance Method Summary

Instance methods inherited from class Ameba::Rule::Base

==(other) ==, catch(source : Source) catch, excluded?(source) excluded?, group group, hash hash, name name, special? special?, test(source : Source, node : Crystal::ASTNode, *opts)
test(source : Source) test

Class methods inherited from class Ameba::Rule::Base

parsed_doc parsed_doc

Constructor Detail

def self.new(ctx : YAML::ParseContext, node : YAML::Nodes::Node) #

def self.new(config = nil) #

A rule that disallows calls to is_a?(Nil) in favor of nil?.

This is considered bad:

var.is_a?(Nil)

And needs to be written as:

var.nil?

YAML configuration example:

Style/IsANil:
  Enabled: true

[View source]

Instance Method Detail

def description : String #

def description=(description : String) #

def enabled : Bool #

def enabled=(enabled : Bool) #

def excluded : Array(String) | Nil #

def excluded=(excluded : Array(String) | Nil) #

def severity : Ameba::Severity #

def severity=(severity : Ameba::Severity) #

def test(source, node : Crystal::IsA) #

[View source]