Class: Evilution::Equivalent::Heuristic::AliasSwap

Inherits:
Object
  • Object
show all
Defined in:
lib/evilution/equivalent/heuristic/alias_swap.rb

Constant Summary collapse

ALIAS_PAIRS = 
Set[
  Set[:detect, :find],
  Set[:length, :size],
  Set[:collect, :map],
  Set[:count, :length],
  Set[:count, :size]
].freeze
MATCHING_OPERATORS = 
Set["send_mutation", "collection_replacement"].freeze

Instance Method Summary collapse

Instance Method Details

#match?(mutation) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/evilution/equivalent/heuristic/alias_swap.rb', line 16

def match?(mutation)
  return false unless MATCHING_OPERATORS.include?(mutation.operator_name)

  diff = mutation.diff
  removed = extract_method(diff, "- ")
  added = extract_method(diff, "+ ")
  return false unless removed && added

  pair = Set[removed.to_sym, added.to_sym]
  ALIAS_PAIRS.include?(pair)
end