65 lines
1.3 KiB
Ruby
65 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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module Mutant
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class Mutator
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class Node
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# Mutator for when nodes
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class When < self
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handle(:when)
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private
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# Emit mutations
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#
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# @return [undefined]
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def dispatch
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if body
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mutate_body
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else
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emit_child_update(body_index, N_RAISE)
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end
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mutate_conditions
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end
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# Emit condition mutations
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#
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# @return [undefined]
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def mutate_conditions
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conditions = children.length - 1
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children[0..-2].each_index do |index|
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delete_child(index) if conditions > 1
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mutate_child(index)
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end
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end
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# Emit body mutations
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#
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# @return [undefined]
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def mutate_body
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mutate_child(body_index)
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end
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# Body node
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#
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# @return [Parser::AST::Node]
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# if body is present
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#
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# @return [nil]
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# otherwise
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def body
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children.fetch(body_index)
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end
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# Index of body node
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#
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# @return [Integer]
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def body_index
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children.length - 1
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end
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end # When
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end # Node
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end # Mutator
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end # Mutant
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