a19f3b1691
* I do not use 1.9.3 * Also keeping them in each file increases mental overhead (true it *can* be autoamted) * None of the files encodes NON ASCII chars. * I do not expect it makes any difference, since nobody programmatically will consume strings generated by mutant under the assumption they are UTF-8 encoded. * 1.9.3 Users have to deal with the encoding fuckup under ruby anyways.
59 lines
1.2 KiB
Ruby
59 lines
1.2 KiB
Ruby
module Mutant
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class Mutator
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class Node
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# Mutator for case nodes
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class Case < self
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handle(:case)
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children :condition
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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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#
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# @api private
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#
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def dispatch
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emit_singletons
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emit_condition_mutations if condition
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emit_when_mutations
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emit_else_mutations
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end
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# Emit when mutations
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#
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# @return [undefined]
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#
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# @api private
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#
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def emit_when_mutations
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indices = children.each_index.drop(1).take(children.length - 2)
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one = indices.one?
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indices.each do |index|
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mutate_child(index)
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delete_child(index) unless one
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end
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end
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# Emit else mutations
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#
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# @return [undefined]
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#
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# @api private
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#
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def emit_else_mutations
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else_branch = children.last
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else_index = children.length - 1
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return unless else_branch
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mutate_child(else_index)
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emit_child_update(else_index, nil)
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end
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end # Case
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end # Node
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end # Mutator
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end # Mutant
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