Add validation when parsing enum fields.

Invalid values from the wire are silently ignored.
Unlike full/lite, the invalid values are not stored into the
unknown fields, because there's no way to get them out from
Nano's unknown fields without a matching Extension.

Edited README and slightly moved it towards a standalone
section for Nano, independent of the Micro section.

Change-Id: I2c1eb07f4d6d8f3aea242b8ddd95b9c966f3f177

1 files changed, 4 insertions, 0 deletions

diff --git a/src/google/protobuf/compiler/javanano/javanano_enum_field.h b/src/google/protobuf/compiler/javanano/javanano_enum_field.h
index c477af2..55bf635 100644
--- a/src/google/protobuf/compiler/javanano/javanano_enum_field.h
+++ b/src/google/protobuf/compiler/javanano/javanano_enum_field.h
@@ -37,6 +37,7 @@
 
 #include <map>
 #include <string>
+#include <vector>
 #include <google/protobuf/compiler/javanano/javanano_field.h>
 
 namespace google {
@@ -62,6 +63,7 @@ class EnumFieldGenerator : public FieldGenerator {
  private:
   const FieldDescriptor* descriptor_;
   map<string, string> variables_;
+  vector<string> canonical_values_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumFieldGenerator);
 };
@@ -84,6 +86,7 @@ class AccessorEnumFieldGenerator : public FieldGenerator {
  private:
   const FieldDescriptor* descriptor_;
   map<string, string> variables_;
+  vector<string> canonical_values_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(AccessorEnumFieldGenerator);
 };
@@ -109,6 +112,7 @@ class RepeatedEnumFieldGenerator : public FieldGenerator {
 
   const FieldDescriptor* descriptor_;
   map<string, string> variables_;
+  vector<string> canonical_values_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(RepeatedEnumFieldGenerator);
 };