Support packed primitive types

2 files changed, 45 insertions, 0 deletions

diff --git a/protos/google/protobuf/descriptor.proto b/protos/google/protobuf/descriptor.proto
index 3f91c187..e0e6f7f2 100644
--- a/protos/google/protobuf/descriptor.proto
+++ b/protos/google/protobuf/descriptor.proto
@@ -252,6 +252,8 @@ message FileOptions {
   }
   optional OptimizeMode optimize_for = 9 [default=CODE_SIZE];
 
+
+
   // The parser stores options it doesn't recognize here. See above.
   repeated UninterpretedOption uninterpreted_option = 999;
 
@@ -298,6 +300,11 @@ message FieldOptions {
 
     STRING_PIECE = 2;
   }
+  // The packed option can be enabled for repeated primitive fields to enable
+  // a more efficient representation on the wire. Rather than repeatedly
+  // writing the tag and type for each element, the entire array is encoded as
+  // a single length-delimited blob.
+  optional bool packed = 2;
 
   // EXPERIMENTAL.  DO NOT USE.
   // For "map" fields, the name of the field in the enclosed type that
diff --git a/protos/google/protobuf/unittest.proto b/protos/google/protobuf/unittest.proto
index 313a514d..dd583709 100644
--- a/protos/google/protobuf/unittest.proto
+++ b/protos/google/protobuf/unittest.proto
@@ -458,6 +458,44 @@ message TestExtremeDefaultValues {
   optional string utf8_string = 6 [default = "\341\210\264"];
 }
 
+message TestPackedTypes {
+  repeated    int32 packed_int32    =  90 [packed = true];
+  repeated    int64 packed_int64    =  91 [packed = true];
+  repeated   uint32 packed_uint32   =  92 [packed = true];
+  repeated   uint64 packed_uint64   =  93 [packed = true];
+  repeated   sint32 packed_sint32   =  94 [packed = true];
+  repeated   sint64 packed_sint64   =  95 [packed = true];
+  repeated  fixed32 packed_fixed32  =  96 [packed = true];
+  repeated  fixed64 packed_fixed64  =  97 [packed = true];
+  repeated sfixed32 packed_sfixed32 =  98 [packed = true];
+  repeated sfixed64 packed_sfixed64 =  99 [packed = true];
+  repeated    float packed_float    = 100 [packed = true];
+  repeated   double packed_double   = 101 [packed = true];
+  repeated     bool packed_bool     = 102 [packed = true];
+  repeated ForeignEnum packed_enum  = 103 [packed = true];
+}
+
+message TestPackedExtensions {
+  extensions 1 to max;
+}
+
+extend TestPackedExtensions {
+  repeated    int32 packed_int32_extension    =  90 [packed = true];
+  repeated    int64 packed_int64_extension    =  91 [packed = true];
+  repeated   uint32 packed_uint32_extension   =  92 [packed = true];
+  repeated   uint64 packed_uint64_extension   =  93 [packed = true];
+  repeated   sint32 packed_sint32_extension   =  94 [packed = true];
+  repeated   sint64 packed_sint64_extension   =  95 [packed = true];
+  repeated  fixed32 packed_fixed32_extension  =  96 [packed = true];
+  repeated  fixed64 packed_fixed64_extension  =  97 [packed = true];
+  repeated sfixed32 packed_sfixed32_extension =  98 [packed = true];
+  repeated sfixed64 packed_sfixed64_extension =  99 [packed = true];
+  repeated    float packed_float_extension    = 100 [packed = true];
+  repeated   double packed_double_extension   = 101 [packed = true];
+  repeated     bool packed_bool_extension     = 102 [packed = true];
+  repeated ForeignEnum packed_enum_extension  = 103 [packed = true];
+}
+
 // Test that RPC services work.
 message FooRequest  {}
 message FooResponse {}