clang-format: Enable formatting of protocol buffer definitions.

Almost by accident, clang-format seems to be able to format protocol
buffer definitions (https://code.google.com/p/protobuf/).

The only change is that a space is required between numeric constants
and opening square brackets (for default values). While this might in
theory be used for array subscripts (int val = 4[MyArray]), I have not
seen this pattern in practice much. If this is wrong, we can make this
smarter in the future.

llvm-svn: 189663

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index aef1dae6fdf..c30133a4b8a 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -6242,5 +6242,14 @@ TEST_F(FormatTest, FormatsWithWebKitStyle) {
             format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style));
 }
 
+TEST_F(FormatTest, FormatsProtocolBufferDefinitions) {
+  // It seems that clang-format can format protocol buffer definitions
+  // (see https://code.google.com/p/protobuf/).
+  verifyFormat("message SomeMessage {\n"
+               "  required int32 field1 = 1;\n"
+               "  optional string field2 = 2 [default = \"2\"]\n"
+               "}");
+}
+
 } // end namespace tooling
 } // end namespace clang