71 lines
1.4 KiB
Ruby
71 lines
1.4 KiB
Ruby
# encoding: utf-8
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module Mutant
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class Mutator
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class Node
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class Literal
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# Abstract literal range mutator
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class Range < self
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include AbstractType
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MAP = {
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:irange => :erange,
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:erange => :irange
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}.freeze
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children :start, :_end
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handle(*MAP.keys)
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private
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# Emit mutants
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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_nil
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emit_inverse
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emit_lower_bound_mutations
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emit_upper_bound_mutations
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end
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# Return inverse node
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#
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# @return [Parser::AST::Node]
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#
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# @api private
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#
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def emit_inverse
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emit(s(MAP.fetch(node.type), *children))
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end
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# Emit range start 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_upper_bound_mutations
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emit_self(NAN, _end)
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end
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# Emit start 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_lower_bound_mutations
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emit_self(start, INFINITY)
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emit_self(start, NAN)
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end
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end # Range
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end # Literal
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end # Node
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end # Mutator
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end # Mutant
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