Class: Evilution::Mutator::Operator::SplatOperator

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

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_assoc_splat_node(node) ⇒ Object 



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# File 'lib/evilution/mutator/operator/splat_operator.rb', line 36

def visit_assoc_splat_node(node)
  return super if node.value.nil?
  return super if hash_elements.include?(node)
  return super if kwarg_preceded_splats.include?(node)

  mutate_remove_double_splat(node)

  super
end

#visit_hash_node(node) ⇒ Object 



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# File 'lib/evilution/mutator/operator/splat_operator.rb', line 12

def visit_hash_node(node)
  node.elements.each { |el| hash_elements.add(el) }
  super
end

#visit_keyword_hash_node(node) ⇒ Object

KeywordHashNode wraps call-arg kwargs + ‘**splat`. When an explicit `k: v` precedes a `**opts` splat in the same call, demoting `**opts` to bare `opts` puts a positional after a keyword and Ruby rejects it (`bar(k: v, opts)` is a syntax error). Mark such splats so `visit_assoc_splat_node` skips them. Splats that come BEFORE any kwarg (`bar(**opts, k: v)`) are still safe — positional-before-keyword is fine.



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# File 'lib/evilution/mutator/operator/splat_operator.rb', line 23

def visit_keyword_hash_node(node)
  seen_kwarg = false
  node.elements.each do |el|
    if el.is_a?(Prism::AssocSplatNode) && seen_kwarg
      kwarg_preceded_splats.add(el)
    elsif el.is_a?(Prism::AssocNode)
      seen_kwarg = true
    end
  end

  super
end

#visit_splat_node(node) ⇒ Object 



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# File 'lib/evilution/mutator/operator/splat_operator.rb', line 6

def visit_splat_node(node)
  mutate_remove_splat(node) if node.expression

  super
end