Rm `Type#type_cast`

This helper no longer makes sense as a separate method. Instead I'll
just have `deserialize` call `cast` by default. This led to a random
infinite loop in the `JSON` pg type, when it called `super` from
`deserialize`. Not really a great way to fix that other than not calling
super, or continuing to have the separate method, which makes the public
API differ from what we say it is.

activerecord/lib/active_record/connection_adapters/postgresql/oid/bit.rb

@@ -7,7 +7,7 @@ def type
             :bit
           end
 
-          def type_cast(value)
+          def cast(value)
             if ::String === value
               case value
               when /^0x/i

activerecord/lib/active_record/connection_adapters/postgresql/oid/enum.rb

@@ -7,7 +7,7 @@ def type
             :enum
           end
 
-          def type_cast(value)
+          def cast(value)
             value.to_s
           end
         end

activerecord/lib/active_record/connection_adapters/postgresql/oid/json.rb

@@ -13,7 +13,7 @@ def deserialize(value)
             if value.is_a?(::String)
               ::ActiveSupport::JSON.decode(value) rescue nil
             else
-              super
+              value
             end
           end
 
@@ -21,7 +21,7 @@ def serialize(value)
             if value.is_a?(::Array) || value.is_a?(::Hash)
               ::ActiveSupport::JSON.encode(value)
             else
-              super
+              value
             end
           end
 

activerecord/lib/active_record/connection_adapters/postgresql/oid/point.rb

@@ -9,13 +9,13 @@ def type
             :point
           end
 
-          def type_cast(value)
+          def cast(value)
             case value
             when ::String
               if value[0] == '(' && value[-1] == ')'
                 value = value[1...-1]
               end
-              type_cast(value.split(','))
+              cast(value.split(','))
             when ::Array
               value.map { |v| Float(v) }
             else

activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb

@@ -11,7 +11,7 @@ def type
             :uuid
           end
 
-          def type_cast(value)
+          def cast(value)
             value.to_s[ACCEPTABLE_UUID, 0]
           end
         end

activerecord/lib/active_record/connection_adapters/postgresql/oid/vector.rb

@@ -16,7 +16,7 @@ def initialize(delim, subtype)
           # FIXME: this should probably split on +delim+ and use +subtype+
           # to cast the values.  Unfortunately, the current Rails behavior
           # is to just return the string.
-          def type_cast(value)
+          def cast(value)
             value
           end
         end

activerecord/lib/active_record/type/binary.rb

@@ -9,7 +9,7 @@ def binary?
         true
       end
 
-      def type_cast(value)
+      def cast(value)
         if value.is_a?(Data)
           value.to_s
         else

activerecord/lib/active_record/type/float.rb

@@ -7,7 +7,7 @@ def type
         :float
       end
 
-      alias serialize type_cast
+      alias serialize cast
 
       private
 

activerecord/lib/active_record/type/helpers/numeric.rb

@@ -2,7 +2,7 @@ module ActiveRecord
   module Type
     module Helpers
       module Numeric # :nodoc:
-        def type_cast(value)
+        def cast(value)
           value = case value
                   when true then 1
                   when false then 0

activerecord/lib/active_record/type/integer.rb

@@ -22,7 +22,7 @@ def deserialize(value)
       end
 
       def serialize(value)
-        result = type_cast(value)
+        result = cast(value)
         if result
           ensure_in_range(result)
         end

activerecord/lib/active_record/type/value.rb

@@ -14,12 +14,12 @@ def type # :nodoc:
 
       # Convert a value from database input to the appropriate ruby type. The
       # return value of this method will be returned from
-      # ActiveRecord::AttributeMethods::Read#read_attribute. See also
-      # Value#type_cast and Value#cast_value.
+      # ActiveRecord::AttributeMethods::Read#read_attribute. The default
+      # implementation just calls Value#cast.
       #
       # +value+ The raw input, as provided from the database.
       def deserialize(value)
-        type_cast(value)
+        cast(value)
       end
 
       # Type casts a value from user input (e.g. from a setter). This value may
@@ -29,11 +29,11 @@ def deserialize(value)
       #
       # The return value of this method will be returned from
       # ActiveRecord::AttributeMethods::Read#read_attribute. See also:
-      # Value#type_cast and Value#cast_value.
+      # Value#cast_value.
       #
       # +value+ The raw input, as provided to the attribute setter.
       def cast(value)
-        type_cast(value)
+        cast_value(value) unless value.nil?
       end
 
       # Cast a value from the ruby type to a type that the database knows how
@@ -93,16 +93,8 @@ def ==(other)
 
       private
 
-      # Convenience method. If you don't need separate behavior for
-      # Value#deserialize and Value#cast, you can override
-      # this method instead. The default behavior of both methods is to call
-      # this one. See also Value#cast_value.
-      def type_cast(value) # :doc:
-        cast_value(value) unless value.nil?
-      end
-
       # Convenience method for types which do not need separate type casting
-      # behavior for user and database inputs. Called by Value#type_cast for
+      # behavior for user and database inputs. Called by Value#cast for
       # values except +nil+.
       def cast_value(value) # :doc:
         value

activerecord/test/cases/base_test.rb

@@ -1427,7 +1427,7 @@ def test_column_types_typecast
     attrs.delete 'id'
 
     typecast = Class.new(ActiveRecord::Type::Value) {
-      def type_cast value
+      def cast value
         "t.lo"
       end
     }

activerecord/test/cases/dirty_test.rb

@@ -625,7 +625,7 @@ def test_datetime_attribute_doesnt_change_if_zone_is_modified_in_string
 
   test "defaults with type that implements `serialize`" do
     type = Class.new(ActiveRecord::Type::Value) do
-      def type_cast(value)
+      def cast(value)
         value.to_i
       end