Class: Sexp2Ruby::Node::Masgn

Inherits:
Base
  • Object
show all
Defined in:
lib/sexp2ruby/node/masgn.rb

Constant Summary

Constants inherited from Base

Base::ASSIGN_NODES, Base::LF, Base::LINE_LENGTH

Instance Attribute Summary

Attributes inherited from Base

#processor

Instance Method Summary collapse

Methods inherited from Base

#initialize

Constructor Details

This class inherits a constructor from Sexp2Ruby::Node::Base

Instance Method Details

#to_s(exp) ⇒ Object

s(:masgn, s(:array, s(:lasgn, :var), …), s(:to_ary, <val>, …)) s(:iter, <call>, s(:args, s(:masgn, :a, :b)), <body>)



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# File 'lib/sexp2ruby/node/masgn.rb', line 7

def to_s(exp)
  case exp.first
  when Sexp then
    lhs = exp.shift
    rhs = exp.empty? ? nil : exp.shift

    case lhs.first
    when :array then
      lhs.shift # node type
      lhs = lhs.map do |l|
        case l.first
        when :masgn then
          "(#{process(l)})"
        else
          process(l)
        end
      end
    else
      raise "no clue: #{lhs.inspect}"
    end

    if rhs.nil?
      return lhs.join(", ")
    else
      t = rhs.first
      rhs = process rhs
      rhs = rhs[1..-2] if t == :array # FIX: bad? I dunno
      return "#{lhs.join(", ")} = #{rhs}"
    end
  when Symbol then # block arg list w/ masgn
    result = exp.join ", "
    exp.clear
    "(#{result})"
  else
    raise "unknown masgn: #{exp.inspect}"
  end
end