adding initial readme, adding initial encoder code

README.rdoc

@@ -0,0 +1,14 @@
+= WARNING: THIS CODE IS EXPERIMENTAL AT THE MOMENT
+
+= JSON Machine
+
+A modern, pure-ruby streaming JSON parser/encoder modeled after yajl-ruby.
+
+My intention is to create a pure-ruby, SAX-like, streaming JSON parser that allows the caller to build their own objects while parsing is happening.
+For example, by overriding the "found_string(str)" method, the caller can scan and parse out other types of objects (like say, Time or Date).
+
+I have the parser working, and according to my testing it's able to generate matching output to the JSON gem, ActiveSupport and yajl-ruby but with one important difference.
+It has better UTF-8 support (specifically regarding surrogate character sequences) and [will eventually be] able to parse and encode to/from a stream in chunks.
+
+Now that I have the parser working, my next step is to go back over the implementation and optimize the shit out of it.
+Help/suggestions would be greatly appreciated :)

benchmark/parser.rb

@@ -6,7 +6,7 @@
 # require 'json/pure'
 # if we require activesupport, it'll unconditionally require the C version of the JSON gem
 # this benchmark wants to use the pure ruby version
-# require 'activesupport'
+require 'activesupport'
 require File.join(File.dirname(__FILE__), '..', 'lib', 'json_machine')
 
 json = File.read(ARGV[0])
@@ -27,8 +27,8 @@
   #   JSON.parse(json, :max_nesting => false)
   # end
 
-  # puts "ActiveSupport"
-  # x.report do
-  #   active_support = ActiveSupport::JSON.decode(json)
-  # end
+  puts "ActiveSupport"
+  x.report do
+    active_support = ActiveSupport::JSON.decode(json)
+  end
 end

lib/json_machine/encoder.rb

@@ -5,7 +5,23 @@ class Encoder
     def initialize(opts={})
     end
 
-    def encode(obj, str_or_io=nil)
+    def encode(obj)
+      case obj.class.name
+      when "Hash"
+        val = "{"
+        val << obj.keys.map do |key|
+          "\"#{key}\": #{encode(obj[key])}"
+        end * ", "
+        val << "}"
+      when "Array"
+        "[#{obj.map{|val| encode(val)} * ', '}]"
+      when "NilClass"
+        "null"
+      when "TrueClass", "FalseClass", "Fixnum", "Float"
+        obj.to_s
+      else
+        "\"#{obj.to_s}\""
+      end
     end
   end
 end