116 lines
2.8 KiB
Ruby
116 lines
2.8 KiB
Ruby
module Mutant
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class Matcher
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class Method
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# Matcher for singleton methods
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class Singleton < self
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SUBJECT_CLASS = Subject::Method::Singleton
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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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"#{scope.name}.#{method_name}"
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end
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memoize :identification
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private
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# Test for node match
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#
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# @param [Rubinius::AST::Node] node
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#
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# @return [true]
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# returns true if node matches method
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#
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# @return [false]
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# returns false if node NOT matches method
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#
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# @api private
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#
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def match?(node)
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node.class == Rubinius::AST::DefineSingleton &&
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line?(node) &&
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name?(node) &&
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receiver?(node)
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end
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# Test for line match
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#
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# @param [Rubinius::AST::Node] node
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#
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# @return [true]
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# returns true if node matches source line
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#
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# @return [false]
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# returns false otherwise
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#
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# @api private
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#
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def line?(node)
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node.line == source_line
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end
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# Test for name match
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#
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# @param [Rubinius::AST::DefineSingleton] node
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#
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# @return [true]
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# returns true if node name matches
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#
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# @return [false]
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# returns false otherwise
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#
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# @api private
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#
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def name?(node)
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node.body.name == method_name
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end
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# Test for receiver match
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#
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# @param [Rubinius::AST::DefineSingleton] node
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#
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# @return [true]
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# returns true when receiver is self or scope from pattern
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#
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# @return [false]
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# returns false otherwise
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#
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# @api private
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#
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def receiver?(node)
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receiver = node.receiver
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case receiver
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when Rubinius::AST::Self
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true
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when Rubinius::AST::ConstantAccess
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receiver_name?(receiver)
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else
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$stderr.puts "Unable to find singleton method definition can only match receiver on Rubinius::AST::Self or Rubinius::AST::ConstantAccess, got #{receiver.class}"
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false
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end
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end
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# Test if reciver name matches context
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#
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# @param [Rubinius::AST::Node] node
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#
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# @return [true]
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# returns true when node name matches unqualified scope name
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#
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# @return [false]
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# returns false otherwise
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#
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# @api private
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#
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def receiver_name?(node)
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node.name.to_s == context.unqualified_name
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end
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end
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end
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end
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end
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