3ae85ea0f9
* Before Symbol#==, Symbol#eql?, and Symbol#equal? where used inconsistently * Lots of redundant foo.type.equal?(:symbol)
57 lines
1.1 KiB
Ruby
57 lines
1.1 KiB
Ruby
module Mutant
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# Mixin for node helpers
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module NodeHelpers
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# Build node
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#
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# @param [Symbol] type
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#
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# @return [Parser::AST::Node]
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#
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# @api private
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#
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def s(type, *children)
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Parser::AST::Node.new(type, children)
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end
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module_function :s
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NAN =
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s(:send, s(:float, 0.0), :/, s(:float, 0.0))
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INFINITY =
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s(:send, s(:float, 1.0), :/, s(:float, 0.0))
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NEGATIVE_INFINITY =
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s(:send, s(:float, -1.0), :/, s(:float, 0.0))
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RAISE = s(:send, nil, :raise)
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N_TRUE = s(:true)
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N_FALSE = s(:false)
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N_NIL = s(:nil)
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N_EMPTY = s(:empty)
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N_SELF = s(:self)
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# Build a negated boolean node
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#
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# @param [Parser::AST::Node] node
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#
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# @return [Parser::AST::Node]
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#
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# @api private
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#
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def n_not(node)
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s(:send, node, :!)
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end
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NODE_TYPES.each do |type|
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fail "method: #{type} is already defined" if instance_methods(true).include?(type)
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name = "n_#{type.to_s.sub(/\??\z/, '?')}"
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define_method(name) do |node|
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node.type.equal?(type)
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end
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private name
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end
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end # NodeHelpers
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end # Mutant
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