Class: Ruby2Lolz

Inherits:
SexpProcessor
  • Object
show all
Defined in:
lib/ruby2lolz.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Ruby2Lolz

Returns a new instance of Ruby2Lolz.



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# File 'lib/ruby2lolz.rb', line 26

def initialize
  super
  @indent = "  "
  
  self.auto_shift_type = true
  self.strict = true
  self.expected = String
end

Class Method Details

.translate(klass_or_str, method = nil) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 11

def self.translate(klass_or_str, method = nil)
  sexp = ParseTree.translate(klass_or_str, method)

  # unified_ruby is a rewriter plugin that rewires
  # the parse tree to make it easier to work with
  #  - defn arg above scope / making it arglist / ...
  unifier = Unifier.new
  unifier.processors.each do |p|
    p.unsupported.delete :cfunc # HACK
  end
  sexp = unifier.process(sexp)

  self.new.process(sexp)
end

Instance Method Details

#indent(s) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 184

def indent(s)
  s.to_s.split(/\n/).map{|line| @indent + line}.join("\n")
end

#process_arglist(exp, verbose = false) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 44

def process_arglist(exp, verbose = false)
  code = []
  until exp.empty? do
    if verbose
      code.push indent("AWSUM VAR\n #{indent(process(exp.shift))}\nKTHNX.")
    else
      code.push process(exp.shift)
    end
  end
  code.join("\n")
end

#process_args(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 130

def process_args(exp)
  args = []

  until exp.empty? do
    arg = exp.shift
    case arg
    when Symbol then
      args << "YR #{arg}"
    when Array then
      case arg.first
      when :block then
        asgns = {}
        arg[1..-1].each do |lasgn|
          asgns[lasgn[1]] = process(lasgn)
        end

        args.each_with_index do |name, index|
          args[index] = asgns[name] if asgns.has_key? name
        end
      else
        raise "unknown arg type #{arg.first.inspect}"
      end
    else
      raise "unknown arg type #{arg.inspect}"
    end
  end

  return "#{args.join ', '}"
end

#process_array(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 56

def process_array(exp)
  str = "I CAN MANY HAZ\n"
  str << indent(process_arglist(exp, true))
  str << "\nKTHNXBYE."
end

#process_block(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 160

def process_block(exp)
  result = []
  exp << nil if exp.empty?
  until exp.empty? do
    code = exp.shift

    if code.nil? or code.first == :nil then
      result << "# do nothing"
    else
      result << process(code)
    end
  end

  result = result.join "\n"
  result = case self.context[1]
  when nil, :scope, :if, :iter, :resbody, :when, :while then
    result + "\n"
  else
    "(#{result})"
  end

  return result
end

#process_call(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 99

def process_call(exp)
  receiver_node_type = exp.first.nil? ? nil : exp.first.first
  receiver = process exp.shift

  name = exp.shift
  args_exp = exp.shift rescue nil
  if args_exp && args_exp.first == :array # FIX
    args = "#{process(args_exp)[1..-2]}"
  else
    args = process args_exp
    args = nil if args.empty?
  end

  case name
  when :<=>, :==, :<, :>, :<=, :>=, :-, :+, :*, :/, :%, :<<, :>>, :** then
    "(#{receiver} #{name} #{args})"
  when :[] then
    "#{receiver}[#{args}]"
  when :"-@" then
    "-#{receiver}"
  when :"+@" then
    "+#{receiver}"
  else
    unless receiver.nil? then
      "#{receiver}.#{name}#{args ? "#{args})" : args}"
    else
      "#{name}#{args ? " #{args}" : args}"
    end
  end
end

#process_defn(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 83

def process_defn(exp)
  type1 = exp[1].first
  type2 = exp[2].first rescue nil

  case type1
  when :scope, :args then
    name = exp.shift
    args = process(exp.shift)
    args = "" if args == "[]"
    body = indent(process(exp.shift))
    return "HOW DUZ I HAZ #{name} [#{args}]\n#{body}\nIF U SAY SO"
  else
    raise "Unknown defn type: #{type1} for #{exp.inspect}"
  end   
end

#process_hash(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 62

def process_hash(exp)
  result = []

  until exp.empty?
    lhs = process(exp.shift)
    rhs = exp.shift
    t = rhs.first
    rhs = process rhs
    rhs = "#{rhs}" unless [:lit, :str].include? t # TODO: verify better!

    result.push indent("I CAN HAS #{lhs.to_s.capitalize}\n #{indent(rhs)}\nKTHNX.")
  end

  case self.context[1]
  when :arglist, :argscat then
    return "#{result.join(', ')}"
  else
    return "OH HAI\n#{result.join("\n")}\nKTHNXBYE."
  end
end

#process_lit(exp) ⇒ Object

Processors



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# File 'lib/ruby2lolz.rb', line 38

def process_lit(exp);   exp.shift.to_s;     end

#process_lvar(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 41

def process_lvar(exp);  exp.shift.to_s;     end

#process_scope(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 40

def process_scope(exp); process(exp.shift); end

#process_str(exp) ⇒ Object 



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# File 'lib/ruby2lolz.rb', line 39

def process_str(exp);   exp.shift.to_s;     end