[clang-query] Add comment token handling

Summary:
It is possible to pass a file of commands to clang-query using the
command line option -f or --preload.  Make it possible to write comments
in such files.

Reviewers: aaron.ballman

Reviewed By: aaron.ballman

Subscribers: mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D52752

llvm-svn: 343666

1 files changed, 11 insertions, 0 deletions

diff --git a/clang-tools-extra/unittests/clang-query/QueryParserTest.cpp b/clang-tools-extra/unittests/clang-query/QueryParserTest.cpp
index 729862b5fda..62844c896e6 100644
--- a/clang-tools-extra/unittests/clang-query/QueryParserTest.cpp
+++ b/clang-tools-extra/unittests/clang-query/QueryParserTest.cpp
@@ -146,6 +146,17 @@ TEST_F(QueryParserTest, LetUnlet) {
             cast<InvalidQuery>(Q)->ErrStr);
 }
 
+TEST_F(QueryParserTest, Comment) {
+  QueryRef Q = parse("# let foo decl()");
+  ASSERT_TRUE(isa<NoOpQuery>(Q));
+
+  Q = parse("let foo decl() # creates a decl() matcher called foo");
+  ASSERT_TRUE(isa<LetQuery>(Q));
+
+  Q = parse("set bind-root false # reduce noise");
+  ASSERT_TRUE(isa<SetQuery<bool>>(Q));
+}
+
 TEST_F(QueryParserTest, Complete) {
   std::vector<llvm::LineEditor::Completion> Comps =
       QueryParser::complete("", 0, QS);