82 lines
1.9 KiB
Ruby
82 lines
1.9 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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RECEIVER_INDEX = 0
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NAME_INDEX = 1
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private
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# Test for node match
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#
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# @param [Parser::AST::Node] node
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#
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# @return [Boolean]
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#
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# @api private
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def match?(node)
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line?(node) && name?(node) && receiver?(node)
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end
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# Test for line match
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#
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# @param [Parser::AST::Node] node
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#
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# @return [Boolean]
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#
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# @api private
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def line?(node)
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expression = node.location.expression
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return false unless expression
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expression.line.equal?(source_line)
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end
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# Test for name match
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#
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# @param [Parser::AST::Node] node
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#
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# @return [Boolean]
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#
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# @api private
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def name?(node)
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node.children[NAME_INDEX].equal?(method_name)
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end
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# Test for receiver match
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#
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# @param [Parser::AST::Node] node
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#
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# @return [Boolean]
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#
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# @api private
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def receiver?(node)
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receiver = node.children[RECEIVER_INDEX]
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case receiver.type
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when :self
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true
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when :const
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receiver_name?(receiver)
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else
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env.warn(format('Can only match :defs on :self or :const got %s unable to match', receiver.type.inspect))
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false
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end
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end
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# Test if receiver name matches context
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#
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# @param [Parser::AST::Node] node
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#
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# @return [Boolean]
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#
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# @api private
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def receiver_name?(node)
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name = node.children[NAME_INDEX]
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name.to_s.eql?(context.unqualified_name)
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end
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end # Singleton
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end # Method
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end # Matcher
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end # Mutant
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