Super basic boilerplate for the XPath compiler

lib/oga.rb

@@ -52,6 +52,7 @@ require 'oga/html/entities'
 require 'oga/xpath/lexer'
 require 'oga/xpath/parser'
 require 'oga/xpath/evaluator'
+require 'oga/xpath/compiler'
 
 require 'oga/css/lexer'
 require 'oga/css/parser'

lib/oga/xpath/compiler.rb

@@ -0,0 +1,14 @@
+module Oga
+  module XPath
+    ##
+    # Compiling of XPath ASTs into Ruby source code.
+    #
+    # The Compiler class can be used to turn an XPath AST into Ruby source code
+    # that can be executed to match XML nodes in a given input document/element.
+    # Compiled source code is cached per expression, removing the need for
+    # recompiling the same expression over and over again.
+    #
+    class Compiler
+    end # Compiler
+  end # XPath
+end # Oga