Class: Henitai::Operators::UnaryOperator

Inherits:
Henitai::Operator show all
Defined in:
lib/henitai/operators/unary_operator.rb

Overview

Removes unary prefix operators by replacing the send node with its receiver.

Covers :-@ (unary minus) and :~ (bitwise NOT). Unary negation (!) is intentionally excluded — BooleanLiteral owns that.

Constant Summary collapse

NODE_TYPES = 
%i[send].freeze
UNARY_METHODS = 
%i[-@ ~].freeze

Constants inherited from Henitai::Operator

Henitai::Operator::FULL_SET, Henitai::Operator::LIGHT_SET

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Henitai::Operator

for_set, #name

Class Method Details

.node_types ⇒ Object 



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# File 'lib/henitai/operators/unary_operator.rb', line 15

def self.node_types
  NODE_TYPES
end

Instance Method Details

#mutate(node, subject:) ⇒ Object 



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# File 'lib/henitai/operators/unary_operator.rb', line 19

def mutate(node, subject:)
  receiver, method_name, *arguments = node.children
  return [] unless UNARY_METHODS.include?(method_name)
  return [] unless arguments.empty?
  return [] unless receiver

  [
    build_mutant(
      subject:,
      original_node: node,
      mutated_node: receiver,
      description: "removed unary #{method_name.to_s.delete('@')}"
    )
  ]
end