Class: Rubocop::Cop::EmptyLiteral

Inherits:
Cop
  • Object
show all
Defined in:
lib/rubocop/cop/empty_literal.rb

Constant Summary collapse

ARR_MSG = 
'Use array literal [] instead of Array.new.'
HASH_MSG = 
'Use hash literal {} instead of Hash.new.'
STR_MSG = 
"Use string literal '' instead of String.new."
ARRAY_NODE =

Empty array node

(send

(const nil :Array) :new)

s(:send, s(:const, nil, :Array), :new)
HASH_NODE =

Empty hash node

(send

(const nil :Hash) :new)

s(:send, s(:const, nil, :Hash), :new)
STR_NODE =

Empty string node

(send

(const nil :String) :new)

s(:send, s(:const, nil, :String), :new)

Instance Attribute Summary

Attributes inherited from Cop

#debug, #disabled_lines, #offences

Instance Method Summary collapse

Methods inherited from Cop

#add_offence, cop_name, #has_report?, #ignore_node, inherited, #initialize, #inspect, #name

Constructor Details

This class inherits a constructor from Rubocop::Cop::Cop

Instance Method Details

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/empty_literal.rb', line 28

def on_send(node)
  case node
  when ARRAY_NODE
    add_offence(:convention,
                node.loc.line,
                ARR_MSG)
  when HASH_NODE
    add_offence(:convention,
                node.loc.line,
                HASH_MSG)
  when STR_NODE
    add_offence(:convention,
                node.loc.line,
                STR_MSG)
  end
end