Merged converters and factory classes from POC_CONVERTERS_FACTORY to trunk

library/kernel/shared_ejson.e

@@ -0,0 +1,32 @@
+indexing
+    description: "[
+                   Shared factory class for creating JSON objects. Maps JSON
+                   objects to ELKS HASH_TABLEs and JSON arrays to ELKS
+                   LINKED_LISTs. Use non-conforming inheritance from this 
+		   class to ensure that your classes share the same 
+		   JSON_FACTORY instance.
+		  ]"
+    author: "Paul Cohen"
+    date: "$Date: $"
+    revision: "$Revision: $"
+    file: "$HeadURL: $"
+
+class SHARED_EJSON
+
+feature
+
+    json: EJSON is
+            -- A shared EJSON instance with default converters for
+            -- DS_LINKED_LIST [ANY] and DS_HASH_TABLE [ANY, HASHABLE]
+        local
+            jllc: JSON_LINKED_LIST_CONVERTER
+            jhtc: JSON_HASH_TABLE_CONVERTER
+        once
+            create Result
+            create jllc.make
+            Result.add_converter (jllc)
+            create jhtc.make
+            Result.add_converter (jhtc)
+        end
+        
+end -- class SHARED_EJSON