94 lines
1.6 KiB
Ruby
94 lines
1.6 KiB
Ruby
module Mutant
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# Subject for mutation wraps AST to mutate with its Context
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class Subject
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include Immutable, Enumerable
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# Return context
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#
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# @return [Context]
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#
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# @api private
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#
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attr_reader :context
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# Return AST node
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#
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# @return [Rubinius::AST::Node]
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#
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# @api private
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#
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attr_reader :node
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# Enumerate possible mutations
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#
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# @return [self]
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# returns self if block given
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#
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# @return [Enumerator]
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# returns eumerator if no block given
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#
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# @api private
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#
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# FIXME:
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# Rubinus <=> Rspec bug
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#
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# Mutator.each(node,&block)
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#
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# results in rspec expectation mismatch
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#
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def each
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return to_enum unless block_given?
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Mutator.each(node) do |mutant|
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yield mutant
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end
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self
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end
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# Reset implementation to original
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#
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# This method inserts the original node again.
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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 reset
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insert(@node)
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self
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end
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private
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# Initialize subject
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#
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# @param [Context] context
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# the context of mutations
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#
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# @param [Rubinius::AST::Node] node
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# the node to be mutated
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#
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# @return [unkown]
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#
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# @api private
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#
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def initialize(context, node)
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@context, @node = context, node
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end
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# Insert AST node under context
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#
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# @param [Rubinius::AST::Node] node
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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(node)
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Loader.load(context.root(node))
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self
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end
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end
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end
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