Define as_json methods, so rails can make objects

1 files changed, 106 insertions, 41 deletions

diff --git a/lib/json/add/core.rb b/lib/json/add/core.rb
index 955fdc6..9c06a9b 100644
--- a/lib/json/add/core.rb
+++ b/lib/json/add/core.rb
@@ -8,12 +8,18 @@ require 'date'
 
 # Symbol serialization/deserialization
 class Symbol
-  # Stores class name (Symbol) with String representation of Symbol as a JSON string.
-  def to_json(*a)
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
       JSON.create_id => self.class.name,
-      's' => to_s,
-    }.to_json(*a)
+      's'            => to_s,
+    }
+  end
+
+  # Stores class name (Symbol) with String representation of Symbol as a JSON string.
+  def to_json(*a)
+    as_json.to_json(*a)
   end
   
   # Deserializes JSON string by converting the <tt>string</tt> value stored in the object to a Symbol
@@ -36,43 +42,60 @@ class Time
       at(object['s'], object['n'] / 1000)
     end
   end
-  
-  # Stores class name (Time) with number of seconds since epoch and number of microseconds for Time as JSON string
-  def to_json(*args)
+
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
       JSON.create_id => self.class.name,
-      's' => tv_sec,
-      'n' => respond_to?(:tv_nsec) ? tv_nsec : tv_usec * 1000
-    }.to_json(*args)
+      's'            => tv_sec,
+      'n'            => respond_to?(:tv_nsec) ? tv_nsec : tv_usec * 1000
+    }
+  end
+  
+  # Stores class name (Time) with number of seconds since epoch and number of
+  # microseconds for Time as JSON string
+  def to_json(*args)
+    as_json.to_json(*args)
   end
 end
 
 # Date serialization/deserialization
 class Date
   
-  # Deserializes JSON string by converting Julian year <tt>y</tt>, month <tt>m</tt>, day <tt>d</tt> and Day of Calendar Reform <tt>sg</tt> to Date.
+  # Deserializes JSON string by converting Julian year <tt>y</tt>, month
+  # <tt>m</tt>, day <tt>d</tt> and Day of Calendar Reform <tt>sg</tt> to Date.
   def self.json_create(object)
     civil(*object.values_at('y', 'm', 'd', 'sg'))
   end
 
   alias start sg unless method_defined?(:start)
-  
-  # Stores class name (Date) with Julian year <tt>y</tt>, month <tt>m</tt>, day <tt>d</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string
-  def to_json(*args)
+
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
       JSON.create_id => self.class.name,
       'y' => year,
       'm' => month,
       'd' => day,
       'sg' => start,
-    }.to_json(*args)
+    }  
+  end
+
+  # Stores class name (Date) with Julian year <tt>y</tt>, month <tt>m</tt>, day
+  # <tt>d</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string
+  def to_json(*args)
+    as_json.to_json(*args)
   end
 end
 
 # DateTime serialization/deserialization
 class DateTime
 
-  # Deserializes JSON string by converting year <tt>y</tt>, month <tt>m</tt>, day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>, offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> to DateTime.
+  # Deserializes JSON string by converting year <tt>y</tt>, month <tt>m</tt>,
+  # day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>,
+  # offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> to DateTime.
   def self.json_create(object)
     args = object.values_at('y', 'm', 'd', 'H', 'M', 'S')
     of_a, of_b = object['of'].split('/')
@@ -86,9 +109,10 @@ class DateTime
   end
 
   alias start sg unless method_defined?(:start)
-  
-  # Stores class name (DateTime) with Julian year <tt>y</tt>, month <tt>m</tt>, day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>, offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string
-  def to_json(*args)
+
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
       JSON.create_id => self.class.name,
       'y' => year,
@@ -99,80 +123,121 @@ class DateTime
       'S' => sec,
       'of' => offset.to_s,
       'sg' => start,
-    }.to_json(*args)
+    } 
+  end
+
+  # Stores class name (DateTime) with Julian year <tt>y</tt>, month <tt>m</tt>,
+  # day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>,
+  # offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string
+  def to_json(*args)
+    as_json.to_json(*args)
   end
 end
 
 # Range serialization/deserialization
 class Range
   
-  # Deserializes JSON string by constructing new Range object with arguments <tt>a</tt> serialized by <tt>to_json</tt>.
+  # Deserializes JSON string by constructing new Range object with arguments
+  # <tt>a</tt> serialized by <tt>to_json</tt>.
   def self.json_create(object)
     new(*object['a'])
   end
 
-  # Stores class name (Range) with JSON array of arguments <tt>a</tt> which include <tt>first</tt> (integer), <tt>last</tt> (integer), and <tt>exclude_end?</tt> (boolean) as JSON string.
-  def to_json(*args)
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
-      JSON.create_id   => self.class.name,
-      'a'         => [ first, last, exclude_end? ]
-    }.to_json(*args)
+      JSON.create_id  => self.class.name,
+      'a'             => [ first, last, exclude_end? ]
+    }
+  end
+
+  # Stores class name (Range) with JSON array of arguments <tt>a</tt> which
+  # include <tt>first</tt> (integer), <tt>last</tt> (integer), and
+  # <tt>exclude_end?</tt> (boolean) as JSON string.
+  def to_json(*args)
+    as_json.to_json(*args)
   end
 end
 
 # Struct serialization/deserialization
 class Struct
   
-  # Deserializes JSON string by constructing new Struct object with values <tt>v</tt> serialized by <tt>to_json</tt>.
+  # Deserializes JSON string by constructing new Struct object with values
+  # <tt>v</tt> serialized by <tt>to_json</tt>.
   def self.json_create(object)
     new(*object['v'])
   end
 
-  # Stores class name (Struct) with Struct values <tt>v</tt> as a JSON string. Only named structs are supported.
-  def to_json(*args)
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     klass = self.class.name
     klass.to_s.empty? and raise JSON::JSONError, "Only named structs are supported!"
     {
       JSON.create_id => klass,
-      'v'     => values,
-    }.to_json(*args)
+      'v'            => values,
+    }
+  end
+
+  # Stores class name (Struct) with Struct values <tt>v</tt> as a JSON string.
+  # Only named structs are supported.
+  def to_json(*args)
+    as_json.to_json(*args)
   end
 end
 
 # Exception serialization/deserialization
 class Exception
 
-  # Deserializes JSON string by constructing new Exception object with message <tt>m</tt> and backtrace <tt>b</tt> serialized with <tt>to_json</tt>
+  # Deserializes JSON string by constructing new Exception object with message
+  # <tt>m</tt> and backtrace <tt>b</tt> serialized with <tt>to_json</tt>
   def self.json_create(object)
     result = new(object['m'])
     result.set_backtrace object['b']
     result
   end
 
-  # Stores class name (Exception) with message <tt>m</tt> and backtrace array <tt>b</tt> as JSON string
-  def to_json(*args)
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
       JSON.create_id => self.class.name,
-      'm'   => message,
-      'b' => backtrace,
-    }.to_json(*args)
+      'm'            => message,
+      'b'            => backtrace,
+    }
+  end
+
+  # Stores class name (Exception) with message <tt>m</tt> and backtrace array
+  # <tt>b</tt> as JSON string
+  def to_json(*args)
+    as_json.to_json(*args)
   end
 end
 
 # Regexp serialization/deserialization
 class Regexp
 
-  # Deserializes JSON string by constructing new Regexp object with source <tt>s</tt> (Regexp or String) and options <tt>o</tt> serialized by <tt>to_json</tt>
+  # Deserializes JSON string by constructing new Regexp object with source
+  # <tt>s</tt> (Regexp or String) and options <tt>o</tt> serialized by
+  # <tt>to_json</tt>
   def self.json_create(object)
     new(object['s'], object['o'])
   end
 
-  # Stores class name (Regexp) with options <tt>o</tt> and source <tt>s</tt> (Regexp or String) as JSON string
-  def to_json(*)
+  # Returns a hash, that will be turned into a JSON object and represent this
+  # object.
+  def as_json(*)
     {
       JSON.create_id => self.class.name,
       'o' => options,
       's' => source,
-    }.to_json
+    }
+  end
+
+  # Stores class name (Regexp) with options <tt>o</tt> and source <tt>s</tt>
+  # (Regexp or String) as JSON string
+  def to_json(*)
+    as_json.to_json
   end
 end