struct Ameba::Rule::Lint::ShadowedArgument

• Ameba::Rule::Lint::ShadowedArgument
• Ameba::Rule::Base
• Struct
• Value
• Object

Overview

A rule that disallows shadowed arguments.

For example, this is considered invalid:

do_something do |foo|
  foo = 1 # shadows block argument
  foo
end

def do_something(foo)
  foo = 1 # shadows method argument
  foo
end

and it should be written as follows:

do_something do |foo|
  foo = foo + 42
  foo
end

def do_something(foo)
  foo = foo + 42
  foo
end

YAML configuration example:

Lint/ShadowedArgument:
  Enabled: true

Defined in:

Constant Summary

MSG = "Argument `%s` is assigned before it is used"

Constructors

• .new(config = nil)

  A rule that disallows shadowed arguments.

Instance Method Summary

• #test(source, node, scope : AST::Scope)
• #test(source)

Constructor Detail

do_something do |foo|
  foo = 1 # shadows block argument
  foo
end

def do_something(foo)
  foo = 1 # shadows method argument
  foo
end

do_something do |foo|
  foo = foo + 42
  foo
end

def do_something(foo)
  foo = foo + 42
  foo
end

Lint/ShadowedArgument:
  Enabled: true

Instance Method Detail