Move YARV out of syntax tree

Author: kddnewton

exe/yarv

@@ -3,8 +3,6 @@
 
 $:.unshift(File.expand_path("../lib", __dir__))
 
-require "syntax_tree"
-
 # Require these here so that we can run binding.irb without having them require
 # anything that we've already patched.
 require "irb"
@@ -15,12 +13,12 @@ require "readline"
 # First, create an instance of our virtual machine.
 events =
   if ENV["DEBUG"]
-    SyntaxTree::YARV::VM::STDOUTEvents.new
+    YARV::VM::STDOUTEvents.new
   else
-    SyntaxTree::YARV::VM::NullEvents.new
+    YARV::VM::NullEvents.new
   end
 
-vm = SyntaxTree::YARV::VM.new(events)
+vm = YARV::VM.new(events)
 
 # Next, set up a bunch of aliases for methods that we're going to hook into in
 # order to set up our virtual machine.

lib/syntax_tree.rb

@@ -35,7 +35,6 @@ module SyntaxTree
   autoload :PrettyPrintVisitor, "syntax_tree/pretty_print_visitor"
   autoload :Search, "syntax_tree/search"
   autoload :WithScope, "syntax_tree/with_scope"
-  autoload :YARV, "syntax_tree/yarv"
 
   # This holds references to objects that respond to both #parse and #format
   # so that we can use them in the CLI.