8233c5871f
* New primary interface #call makes specs and implementations much easier * We had #each mostly for historical reasons that are not relevant anymore * Mutation covers the Mutant::Matcher namespace
101 lines
2.5 KiB
Ruby
101 lines
2.5 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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# New singleton method matcher
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#
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# @param [Class, Module] scope
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# @param [Symbol] method_name
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#
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# @return [Matcher::Method::Singleton]
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#
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# @api private
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def self.new(scope, method_name)
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super(scope, method_name, Evaluator)
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end
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# Singleton method evaluator
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class Evaluator < Evaluator
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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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n_defs?(node) && 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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node
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.location
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.line
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.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.fetch(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.fetch(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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nil
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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.fetch(NAME_INDEX)
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name.to_s.eql?(context.unqualified_name)
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end
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end # Evaluator
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private_constant(*constants(false))
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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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