Update JSON_VALUE and JSON_OBJECT interface

json/json_array.e

@@ -28,6 +28,25 @@ feature -- Initialization
 			end
 
 feature -- Access
+	i_th alias "[]", infix "@" (i: INTEGER):JSON_VALUE is
+			-- Item at `i'-th position
+		do
+			Result := values.i_th (i)
+		end
+
+feature -- Mesurement
+	count:INTEGER is
+			--
+		do
+			Result:=values.count
+		end
+
+feature -- Status report
+	valid_index (i: INTEGER): BOOLEAN is
+			-- Is `i' a valid index?
+		do
+			Result := (1 <= i) and (i <= count)
+		end
 
 feature -- Change Element
 	add(value:JSON_VALUE) is
@@ -41,7 +60,7 @@ feature -- Change Element
 				has_new_value:old values.count + 1 = values.count
 			end
 
-
+feature -- Report
 	to_json:STRING is
 			--Printable json representation
 			-- [] or [elements]
@@ -65,7 +84,7 @@ feature -- Change Element
 				Result.append("]")
 			end
 
-			hash_code:INTEGER is
+	hash_code:INTEGER is
 				--
 				do
 				   from
@@ -78,7 +97,7 @@ feature -- Change Element
 				   	values.forth
 				   end
 				   Result := Result \\ values.count
-				
+
 				end
 feature {NONE} --Implementation
 	values:ARRAYED_LIST[JSON_VALUE]

json/json_boolean.e

@@ -36,4 +36,5 @@ feature -- Access
 
  	value:BOOLEAN
 
+
 end

json/json_null.e

@@ -22,6 +22,6 @@ feature --Access
 				Result:= null_value.hash_code
 			end
 
-feature -- Implementation		
+feature {NONE}-- Implementation		
 	null_value:STRING is "null"
 end

json/json_number.e

@@ -52,6 +52,7 @@ feature -- Access
 			Result:=value.is_equal(other.to_json)
 		end
 
+
 feature -- Implementation
 	value:STRING
 	internal_hash_code:INTEGER

json/json_object.e

@@ -66,14 +66,12 @@ feature -- Access
 		end
 
 	get_keys:ARRAY[JSON_STRING] is
-			--
+			-- array containing actually used keys
 		do
 			Result:=object.current_keys
 		end
 
 
-
-
 feature -- Report
 	to_json:STRING is
 			--  Printable json representation

json/json_string.e

@@ -30,6 +30,7 @@ feature -- Initialization
 
 
 feature -- Access
+
 feature -- Comparison
 	is_equal (other: like Current): BOOLEAN is
 			-- Is JSON_STRING  made of same character sequence as `other'

json/json_value.e

@@ -29,4 +29,109 @@ feature -- Access
 		deferred
 		end
 
+feature -- Status Report
+
+   	is_json_array:BOOLEAN is
+		-- Does `Current' represent a JSON_ARRAY?
+		do
+			if generating_type.is_equal ("JSON_ARRAY") then
+    			Result := true
+			end
+		end
+
+	is_json_string:BOOLEAN is
+		-- Does `Current' represent a JSON_STRING?
+		do
+		   if generating_type.is_equal ("JSON_STRING") then
+    			Result := true
+		   end
+
+		end
+
+	is_json_object:BOOLEAN is
+		-- Does `Current' represent a JSON_OBJECT?
+		do
+
+		  if generating_type.is_equal ("JSON_OBJECT") then
+    			Result := true
+		  end
+
+		end
+
+	is_json_number:BOOLEAN is
+		-- Does 'Current' represent a JSON_NUMBER?
+		do
+		  if generating_type.is_equal ("JSON_NUMBER") then
+    			Result := true
+		  end
+		end
+
+	is_json_boolean:BOOLEAN is
+		-- Does 'Current' represent a JSON_BOOLEAN?
+		do
+			if generating_type.is_equal ("JSON_BOOLEAN") then
+    			Result := true
+		 	end
+		end
+
+	is_json_null:BOOLEAN is
+		-- Does 'Current' represent a JSON_NULL?
+		do
+			if generating_type.is_equal ("JSON_NULL") then
+    			Result := true
+		  	end
+
+		end
+
+feature -- Conversion
+
+	to_json_array:JSON_ARRAY is
+		-- Convert `Current' as a JSON_ARRAY.
+		require
+			is_a_json_array:is_json_array
+		do
+			Result ?= Current
+		end
+
+	to_json_string:JSON_STRING is
+		-- Convert `Current' as a JSON_STRING.
+		require
+			is_a_json_string: is_json_string
+		do
+			Result ?= Current
+		end
+
+	to_json_object:JSON_OBJECT is
+		-- Convert 'Current' as a JSON_OBJECT
+		require
+				is_a_json_object: is_json_object
+		do
+			Result?=Current
+		end
+
+	to_json_number:JSON_NUMBER is
+		-- Convert 'Current' as a JSON_NUMBER
+		require
+			is_a_json_number:is_json_number
+		do
+			Result ?= Current
+		end
+
+	to_json_boolean:JSON_BOOLEAN is
+		-- Convert 'Current' as a JSON_BOOLEAN
+		require
+			is_a_json_boolean:is_json_boolean
+		do
+			Result ?= Current
+		end
+
+	to_json_null:JSON_NULL is
+		-- Convert 'Current' as a JSON_NULL
+		require
+			is_a_json_null:is_json_null
+		do
+			Result ?= Current
+		end
+
+
 end