73 lines
1.8 KiB
Ruby
73 lines
1.8 KiB
Ruby
module Mutant
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module AST
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# Node meta information mixin
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module Meta
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# Metadata for send nodes
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class Send
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include NamedChildren, Concord.new(:node), NodePredicates
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children :receiver, :selector
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INDEX_ASSIGNMENT_SELECTOR = :[]=
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ATTRIBUTE_ASSIGNMENT_SELECTOR_SUFFIX = '='.freeze
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# Arguments of mutated node
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#
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# @return [Enumerable<Parser::AST::Node>]
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#
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# @api private
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alias_method :arguments, :remaining_children
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# Test if AST node is a valid assignment target
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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 assignment?
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index_assignment? || attribute_assignment?
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end
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# Test if AST node is an attribute assignment?
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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 attribute_assignment?
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!Types::METHOD_OPERATORS.include?(selector) &&
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selector.to_s.end_with?(ATTRIBUTE_ASSIGNMENT_SELECTOR_SUFFIX)
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end
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# Test if AST node is an index assign
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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 index_assignment?
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selector.equal?(INDEX_ASSIGNMENT_SELECTOR)
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end
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# Test for binary operator implemented as method
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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 binary_method_operator?
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Types::BINARY_METHOD_OPERATORS.include?(selector)
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end
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# Test if receiver is possibly a top level constant
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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_possible_top_level_const?
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return false unless receiver && n_const?(receiver)
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Const.new(receiver).possible_top_level?
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end
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end # Send
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end # Meta
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end # AST
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end # Mutant
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