Class: RuboCop::Cop::Style::NumericLiteralPrefix

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
IntegerNode
Defined in:
lib/rubocop/cop/style/numeric_literal_prefix.rb

Overview

Checks for octal, hex, binary, and decimal literals using uppercase prefixes and corrects them to lowercase prefix or no prefix (in case of decimals).

Examples:

EnforcedOctalStyle: zero_with_o (default)

# bad - missing octal prefix
num = 01234

# bad - uppercase prefix
num = 0O1234
num = 0X12AB
num = 0B10101

# bad - redundant decimal prefix
num = 0D1234
num = 0d1234

# good
num = 0o1234
num = 0x12AB
num = 0b10101
num = 1234

EnforcedOctalStyle: zero_only

# bad
num = 0o1234
num = 0O1234

# good
num = 01234

Constant Summary collapse

OCTAL_ZERO_ONLY_REGEX = 
/^0[Oo][0-7]+$/.freeze
OCTAL_REGEX = 
/^0O?[0-7]+$/.freeze
HEX_REGEX = 
/^0X[0-9A-F]+$/.freeze
BINARY_REGEX = 
/^0B[01]+$/.freeze
DECIMAL_REGEX = 
/^0[dD][0-9]+$/.freeze
OCTAL_ZERO_ONLY_MSG = 
'Use 0 for octal literals.'
OCTAL_MSG = 
'Use 0o for octal literals.'
HEX_MSG = 
'Use 0x for hexadecimal literals.'
BINARY_MSG = 
'Use 0b for binary literals.'
DECIMAL_MSG = 
'Do not use prefixes for decimal literals.'

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Instance Method Details

#on_int(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/numeric_literal_prefix.rb', line 52

def on_int(node)
  type = literal_type(node)

  return unless type

  add_offense(node) do |corrector|
    corrector.replace(node, send(:"format_#{type}", node.source))
  end
end