Class: Rewriter

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

Overview

Rewriter (probably should be renamed) is a first-pass filter that normalizes some of ruby’s ASTs to make them more processable later in the pipeline. It only has processors for what it is interested in, so real the individual methods for a better understanding of what it does.

Instance Method Summary collapse

Instance Method Details

#rewrite_defn(exp) ⇒ Object 



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# File 'lib/rewriter.rb', line 20

def rewrite_defn(exp)
  case exp.last[0]
  when :ivar then
    ivar = exp.pop
    exp.push s(:scope, s(:block, s(:return, ivar)))
  when :attrset then
    var = exp.pop
    exp.push s(:scope,
               s(:block,
                 s(:return, s(:iasgn, var.last, s(:lvar, :arg)))))
  end
  exp
end