[clang-format] fix indent in alignChainedConditionals

Clang-format was indenting the lines following the `?` in the added test
case by +5 instead of +4. This only happens in a very specific
situation, where the `?` is followed by a multiline block comment, as in
the example. This fix addresses this without regressing any of the
existing tests.

Differential Revision: https://reviews.llvm.org/D101033

diff --git a/clang/lib/Format/WhitespaceManager.cpp b/clang/lib/Format/WhitespaceManager.cpp
index 6016f8d..e78c5c4 100644 (file)
--- a/clang/lib/Format/WhitespaceManager.cpp
+++ b/clang/lib/Format/WhitespaceManager.cpp
@@ -778,12 +778,11 @@ void WhitespaceManager::alignChainedConditionals() {
         Changes, /*StartAt=*/0);
   } else {
     static auto AlignWrappedOperand = [](Change const &C) {
-      auto Previous = C.Tok->getPreviousNonComment(); // Previous;
+      FormatToken *Previous = C.Tok->getPreviousNonComment();
       return C.NewlinesBefore && Previous && Previous->is(TT_ConditionalExpr) &&
-             (Previous->is(tok::question) ||
-              (Previous->is(tok::colon) &&
-               (C.Tok->FakeLParens.size() == 0 ||
-                C.Tok->FakeLParens.back() != prec::Conditional)));
+             (Previous->is(tok::colon) &&
+              (C.Tok->FakeLParens.size() == 0 ||
+               C.Tok->FakeLParens.back() != prec::Conditional));
     };
     // Ensure we keep alignment of wrapped operands with non-wrapped operands
     // Since we actually align the operators, the wrapped operands need the

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 5ae67d9..734ffed 100644 (file)
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -6459,6 +6459,30 @@ TEST_F(FormatTest, BreaksConditionalExpressions) {
                "    bbbb                ? cccccccccccccccccc :\n"
                "                          ddddd;\n",
                Style);
+
+  EXPECT_EQ(
+      "MMMMMMMMMMMMMMMMMMMMMMMMMMM = A ?\n"
+      "    /*\n"
+      "     */\n"
+      "    function() {\n"
+      "      try {\n"
+      "        return JJJJJJJJJJJJJJ(\n"
+      "            pppppppppppppppppppppppppppppppppppppppppppppppppp);\n"
+      "      }\n"
+      "    } :\n"
+      "    function() {};",
+      format(
+          "MMMMMMMMMMMMMMMMMMMMMMMMMMM = A ?\n"
+          "     /*\n"
+          "      */\n"
+          "     function() {\n"
+          "      try {\n"
+          "        return JJJJJJJJJJJJJJ(\n"
+          "            pppppppppppppppppppppppppppppppppppppppppppppppppp);\n"
+          "      }\n"
+          "    } :\n"
+          "    function() {};",
+          getGoogleStyle(FormatStyle::LK_JavaScript)));
 }
 
 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) {