add rdocs for native_object

lib/rhino/context.rb

@@ -100,7 +100,7 @@ module Rhino
         
   end
       
-  class ContextFactory < J::ContextFactory #:nodoc:
+  class ContextFactory < J::ContextFactory # :nodoc:
     
     def observeInstructionCount(cxt, count)
       raise RunawayScriptError, "script exceeded allowable instruction count" if count > @limit
@@ -112,7 +112,7 @@ module Rhino
   end
     
     
-  class RhinoError < StandardError #:nodoc:
+  class RhinoError < StandardError # :nodoc:
     def initialize(native)
       @native = native
     end
@@ -126,5 +126,6 @@ module Rhino
     end        
   end
   
-  class RunawayScriptError < StandardError; end #:nodoc:
+  class RunawayScriptError < StandardError # :nodoc:
+  end 
 end

lib/rhino/native_object.rb

@@ -1,27 +1,59 @@
 
 module Rhino
+  # Wraps a javascript object and makes its properties available from ruby.
   class NativeObject
     include Enumerable
+    
+    # The native java object wrapped by this NativeObject. This will generally
+    # be an instance of org.mozilla.javascript.Scriptable
     attr_reader :j
     
-    def initialize(j)
+    def initialize(j) # :nodoc:
       @j = j
     end
     
+    # get a property from this javascript object, where +k+ is a string or symbol
+    # corresponding to the property name
+    # e.g.
+    #   jsobject = Context.open do |cxt|
+    #      cxt.eval('({foo: 'bar',  'Take me to': 'a funky town'})')
+    #   end
+    # 
+    #   jsobject[:foo] # => 'bar'
+    #   jsobject['foo'] # => 'bar'
+    #   jsobject['Take me to'] # => 'a funky town'
     def [](k)
       To.ruby @j.get(k.to_s, @j)
     end
     
+    # set a property on the javascript object, where +k+ is a string or symbol corresponding
+    # to the property name, and +v+ is the value to set. e.g.
+    #
+    #   jsobject = eval_js "new Object()"
+    #   jsobject['foo'] = 'bar'
+    #   Context.open(:with => jsobject) do |cxt|
+    #     cxt.eval('foo') # => 'bar'
+    #   end
+
     def []=(k,v)
       @j.put(k.to_s,@j,To.javascript(v))
     end
     
+    # enumerate the key value pairs contained in this javascript object. e.g.
+    # 
+    #   eval_js("{foo: 'bar', baz: 'bang'}").each do |key,value|
+    #     puts "#{key} -> #{value} "
+    #   end
+    #
+    # outputs foo -> bar baz -> bang
     def each
       for id in @j.getAllIds() do
         yield id,@j.get(id,@j)
       end
     end
     
+    # Converts the native object to a hash. This isn't really a stretch since it's
+    # pretty much a hash in the first place.
     def to_h
       {}.tap do |h|
         each do |k,v|
@@ -30,6 +62,7 @@ module Rhino
       end
     end
     
+    # Convert this javascript object into a json string.
     def to_json(*args)
       to_h.to_json(*args)
     end