Class: Evilution::Mutator::Operator::MethodBodyReplacement

Inherits:
Base
  • Object
show all
Defined in:
lib/evilution/mutator/operator/method_body_replacement.rb

Constant Summary collapse

ALWAYS_SAFE_REPLACEMENTS = 
%w[nil self].freeze
SUPER_REPLACEMENT = 
"super"

Instance Attribute Summary

Attributes inherited from Base

#mutations

Instance Method Summary collapse

Methods inherited from Base

#call, clear_parse_cache!, #initialize, operator_name, parsed_tree_for

Constructor Details

This class inherits a constructor from Evilution::Mutator::Base

Instance Method Details

#visit_def_node(node) ⇒ Object 



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# File 'lib/evilution/mutator/operator/method_body_replacement.rb', line 9

def visit_def_node(node)
  target = mutation_target(node.body)
  if target
    replacements = ALWAYS_SAFE_REPLACEMENTS.dup
    # Super detection scans the whole body (rescue/else/ensure clauses
    # included) — a super call in any clause means a parent target exists,
    # so a bare-super replacement of the statements is meaningful.
    replacements << SUPER_REPLACEMENT if body_calls_super?(node.body)

    replacements.each do |replacement|
      add_mutation(
        offset: target.location.start_offset,
        length: target.location.length,
        replacement: replacement,
        node: node
      )
    end
  end

  super
end