64 lines
1.4 KiB
Ruby
64 lines
1.4 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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# Emitter for mutations on 19 blocks
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class Block < self
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handle(:block)
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children :send, :arguments, :body
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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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emit_singletons
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emit(send) unless n_lambda?(send)
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emit_send_mutations(&method(:n_send?))
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emit_arguments_mutations
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mutate_body
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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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emit_body(nil)
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emit_body(N_RAISE)
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return unless body
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emit(body) unless body_has_control?
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emit_body_mutations
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mutate_body_receiver
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end
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# Test if body has control structures
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#
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# @return [Boolean]
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def body_has_control?
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AST.find_last_path(body) do |node|
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n_break?(node) || n_next?(node)
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end.any?
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end
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# Mutate method send in body scope of `send`
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#
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# @return [undefined]
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def mutate_body_receiver
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return unless n_send?(body)
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body_meta = AST::Meta::Send.new(body)
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emit(s(:send, send, body_meta.selector, *body_meta.arguments))
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end
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end # Block
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end # Node
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end # Mutator
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end # Mutant
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