Changed enum type to use int32, since negative values are allowable f…

…or enums.
whitelynx · Aug 14, 2011 · 2e9f79c · 2e9f79c
1 parent 10f46ae
commit 2e9f79c
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Showing 6 changed files with 16 additions and 5 deletions.
diff --git a/src/protobuffs.erl b/src/protobuffs.erl
@@ -90,7 +90,7 @@ encode_internal(FieldID, false, bool) ->
 encode_internal(FieldID, true, bool) ->
     encode_internal(FieldID, 1, int32);
 encode_internal(FieldID, Integer, enum) ->
-    encode_internal(FieldID, Integer, uint32);
+    encode_internal(FieldID, Integer, int32);
 encode_internal(FieldID, Integer, int32) when Integer >= -16#80000000, Integer < 0 ->
     encode_internal(FieldID, Integer, int64);
 encode_internal(FieldID, Integer, int64) when Integer >= -16#8000000000000000, Integer < 0 ->
@@ -299,7 +299,7 @@ decode_value(Value, WireType, ExpectedType) ->
 %% @hidden
 -spec typecast(Value :: any(), Type :: field_type()) ->
 		      any().
-typecast(Value, SignedType) when SignedType =:= int32; SignedType =:= int64 ->
+typecast(Value, SignedType) when SignedType =:= int32; SignedType =:= int64; SignedType =:= enum ->
     if
         Value band 16#8000000000000000 =/= 0 -> Value - 16#10000000000000000;
         true -> Value

diff --git a/src/protobuffs_scanner.xrl b/src/protobuffs_scanner.xrl
@@ -17,7 +17,7 @@ Rules.
 {WS}+  : skip_token.
 //.* : skip_token.
 /\*([^\*]|\*[^/])*\*/ : skip_token.
-{D}+ : {token, {integer, TokenLine, list_to_integer(TokenChars)}}.
+-?{D}+ : {token, {integer, TokenLine, list_to_integer(TokenChars)}}.
 {F} : {token, {float, TokenLine, list_to_float(TokenChars)}}.
 {HEX} : {token, {integer, TokenLine, hex_to_int(TokenChars)}}.
 

diff --git a/test/erlang_protobuffs_SUITE_data/enum.proto b/test/erlang_protobuffs_SUITE_data/enum.proto
@@ -2,6 +2,9 @@ message EnumMsg {
   enum Values {
     value1 = 0x01;
     value2 = 2;
+    value3 = -1;
+    value4 = -2147483647;
+    value5 = 2147483648;
   }
 
   optional Values value = 1;

diff --git a/test/protobuffs_eqc.erl b/test/protobuffs_eqc.erl
@@ -46,7 +46,7 @@ value() ->
 	   {sint32(),int32},
 	   {sint64(),int64},
 	   {bool(),bool},
-	   {uint32(),enum},
+	   {sint32(),enum},
 	   {string(),string},
 	   {binary(),bytes}]).
 

diff --git a/test/protobuffs_parser_tests.erl b/test/protobuffs_parser_tests.erl
@@ -40,6 +40,11 @@ enum_test_() ->
     Parsed = protobuffs_parser:parse(Result),
     [?_assertMatch({ok,[{enum, "MyEnum", [{'VALUE0',0},{'VALUE1',1}]}]},Parsed)].
 
+enum_negative_test_() ->
+    {ok,Result,1} = protobuffs_scanner:string("enum MyEnum { VALUE0 = 0; VALUE1 = -1; VALUE2 = 2147483648; VALUE3 = -2147483647;}"),
+    Parsed = protobuffs_parser:parse(Result),
+    [?_assertMatch({ok,[{enum, "MyEnum", [{'VALUE0',0},{'VALUE1',-1},{'VALUE2',2147483648},{'VALUE3',-2147483647}]}]},Parsed)].
+
 service_test_() ->
     {ok,Result,1} = protobuffs_scanner:string("service SearchService { rpc Search (SearchRequest) returns (SearchResponse);}"),
     Parsed = protobuffs_parser:parse(Result),

diff --git a/test/protobuffs_tests.erl b/test/protobuffs_tests.erl
@@ -98,7 +98,10 @@ parse_enum_test_() ->
     {enum, "Values", Values} = lists:keyfind(enum,1,EnumMsg),
     [?_assertMatch({1,optional,"Values","value",none},lists:keyfind(1,1,EnumMsg)),
      ?_assertMatch({'value1',1},lists:keyfind('value1',1,Values)),
-     ?_assertMatch({'value2',2},lists:keyfind('value2',1,Values))].
+     ?_assertMatch({'value2',2},lists:keyfind('value2',1,Values)),
+     ?_assertMatch({'value3',-1},lists:keyfind('value3',1,Values)),
+     ?_assertMatch({'value4',-2147483647},lists:keyfind('value4',1,Values)),
+     ?_assertMatch({'value5',2147483648},lists:keyfind('value5',1,Values))].
 
 parse_enum_outside_test_() ->
     Path = filename:absname("../test/erlang_protobuffs_SUITE_data/enum_outside.proto"),