80 lines
1.9 KiB
Ruby
80 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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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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public :receiver, :selector
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INDEX_ASSIGNMENT_SELECTOR = :[]=
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ATTRIBUTE_ASSIGNMENT_SELECTOR_SUFFIX = '='
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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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alias_method :arguments, :remaining_children
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public :arguments
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# Test if node is defining a proc
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#
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# @return [Boolean]
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def proc?
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naked_proc? || proc_new?
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end
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# Test if AST node is a valid attribute assignment
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#
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# @return [Boolean]
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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 for binary operator implemented as method
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#
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# @return [Boolean]
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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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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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private
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# Test if node is `proc { ... }`
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#
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# @return [Boolean]
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def naked_proc?
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!receiver && selector.equal?(:proc)
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end
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# Test if node is `Proc.new { ... }`
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#
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# @return [Boolean]
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def proc_new?
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receiver &&
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selector.equal?(:new) &&
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n_const?(receiver) &&
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Const.new(receiver).name.equal?(:Proc)
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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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