125 lines
2.1 KiB
Ruby
125 lines
2.1 KiB
Ruby
module Mutant
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# Subject of mutation
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class Subject
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include Adamantium::Flat, 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 matcher
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#
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# @return [Matcher]
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#
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# @api private
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#
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attr_reader :matcher
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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<Mutation>]
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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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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 Mutation.new(self, mutant)
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end
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self
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end
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# Return subject identicication
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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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source_path = context.source_path
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source_line = node.line
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"#{matcher.identification}:#{source_path}:#{source_line}"
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end
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memoize :identification
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# Return source representation of ast
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#
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# @return [Source]
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#
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# @api private
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#
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def source
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ToSource.to_source(node)
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end
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memoize :source
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# Return root AST for node
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#
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# @param [Rubinius::AST::Node] 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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def root(node)
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context.root(node)
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end
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# Return root AST node for original AST ndoe
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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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def original_root
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root(node)
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end
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memoize :original_root
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# Reset subject into original state
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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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Loader.run(original_root)
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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 [Matcher] matcher
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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(matcher, context, node)
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@matcher, @context, @node = matcher, context, node
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end
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end
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end
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