New Mojom Parser: Serialization.

mojom/mojom_parser/mojom/mojom_descriptor.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package mojom
 
 import (
         "fmt"
 )
 
@@ skipping 456 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////
 /// Miscelleneous utilities
 /// //////////////////////////////////////////////////////////////////
 
 func computeTypeKey(fullyQualifiedName string) (typeKey string) {
         if typeKey, ok := fqnToTypeKey[fullyQualifiedName]; ok == true {
                 return typeKey
         }
-        typeKey = fmt.Sprintf("%d", nextKey)
-        nextKey++
+        // TODO(rudominer) Until we understand better what the requirements are for a type key
+        // let's just use the reversed fully-qualified name as the type key. The reason
+        // for the reversal is pragmatic: When debugging we can tell whether a string
+        // is a type key or a fully-qualified-name
+        numBytes := len(fullyQualifiedName)
+        reversed := make([]byte, numBytes)
+        for i := 0; i < numBytes; i++ {
+                reversed[i] = fullyQualifiedName[numBytes-i-1]
+        }
+        typeKey = string(reversed)
         fqnToTypeKey[fullyQualifiedName] = typeKey
         return
 }
 
 var fqnToTypeKey map[string]string
-var nextKey int
 
 func init() {
         fqnToTypeKey = make(map[string]string)
 }