struct Ameba::Rule::Lint::UselessConditionInWhen

Overview

A rule that disallows useless conditions in when clause where it is guaranteed to always return the same result.

For example, this is considered invalid:

case
when utc?
  io << " UTC"
when local?
  Format.new(" %:z").format(self, io) if local?
end

And has to be written as the following:

case
when utc?
  io << " UTC"
when local?
  Format.new(" %:z").format(self, io)
end

YAML configuration example:

Lint/UselessConditionInWhen:
  Enabled: true

Defined in:

ameba/rule/lint/useless_condition_in_when.cr

Constant Summary

MSG = "Useless condition in when detected"

Constructors

Instance Method Summary

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

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

Constructor methods inherited from struct Ameba::Rule::Base

new new

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

parsed_doc parsed_doc

Constructor Detail

def self.new(config = nil) #

A rule that disallows useless conditions in when clause where it is guaranteed to always return the same result.

For example, this is considered invalid:

case
when utc?
  io << " UTC"
when local?
  Format.new(" %:z").format(self, io) if local?
end

And has to be written as the following:

case
when utc?
  io << " UTC"
when local?
  Format.new(" %:z").format(self, io)
end

YAML configuration example:

Lint/UselessConditionInWhen:
  Enabled: true

[View source]

Instance Method Detail

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

[View source]
def test(source) #

[View source]