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.
118 lines
2.1 KiB
Ruby
118 lines
2.1 KiB
Ruby
module Mutant
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# Represent a mutated node with its subject
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class Mutation
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include AbstractType, Adamantium::Flat
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include Concord::Public.new(:subject, :node)
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CODE_DELIMITER = "\0".freeze
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CODE_RANGE = (0..4).freeze
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# Return mutated root 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 root
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subject.root(node)
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end
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memoize :root
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# Test if killer is successful
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#
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# @param [Killer] killer
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#
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# @return [true]
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# if killer is successful
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#
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# @return [false]
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# otherwise
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#
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# @api private
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#
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abstract_method :success?
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# Insert mutated node
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#
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# FIXME: Cache subject visibility in a better way! Ideally dont mutate it
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# implicitly. Also subject.public? should NOT be a public interface it
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# is a detail of method mutations.
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#
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# @return [self]
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#
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# @api private
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#
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def insert
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subject.public?
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Loader::Eval.call(root, subject)
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self
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end
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# Return identification
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#
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# @return [String]
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#
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# @api private
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#
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def identification
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"#{self.class::SYMBOL}:#{subject.identification}:#{code}"
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end
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memoize :identification
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# Return mutation code
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#
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# @return [String]
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#
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# @api private
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#
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def code
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sha1[CODE_RANGE]
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end
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memoize :code
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# Return source
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#
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# @return [String]
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#
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# @api private
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#
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def source
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Unparser.unparse(node)
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end
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memoize :source
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# Return original source
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#
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# @return [String]
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#
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# @api private
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#
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def original_source
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subject.source
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end
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# Test if test should fail under mutation
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#
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# @return [Boolean]
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#
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# @api private
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#
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def should_fail?
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self.class::SHOULD_FAIL
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end
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private
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# Return sha1 sum of source and subject identification
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#
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# @return [String]
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#
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# @api private
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#
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def sha1
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Digest::SHA1.hexdigest(subject.identification + CODE_DELIMITER + source)
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end
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memoize :sha1
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end # Mutation
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end # Mutant
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