[PATCH] D35847: clang-format: Fix left pointer alignment after delctype/typeof

[Erik Uhlmann via Phabricator via cfe-commits]

euhlmann created this revision.
euhlmann added a project: clang.

Change 272124* introduced a regression in spaceRequiredBetween for left aligned pointers to decltype and typeof expressions. This fix adds logic to fix this. The test added is based on a related test in determineStarAmpUsage. Also add test cases for the regression.

- http://llvm.org/viewvc/llvm-project?view=revision&revision=272124

LLVM bug tracker: https://bugs.llvm.org/show_bug.cgi?id=30407


https://reviews.llvm.org/D35847

Files:
  lib/Format/TokenAnnotator.cpp
  unittests/Format/FormatTest.cpp


Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -5351,6 +5351,9 @@
   verifyFormat("for (;; *a = b) {\n}", Left);
   verifyFormat("return *this += 1;", Left);
   verifyFormat("throw *x;", Left);
+  verifyFormat("delete *x;", Left);
+  verifyFormat("typedef typeof(int(int, int))* MyFuncPtr;", Left);
+  verifyFormat("[](const decltype(*a)* ptr) {}", Left);
 
   verifyIndependentOfContext("a = *(x + y);");
   verifyIndependentOfContext("a = &(x + y);");
@@ -5397,9 +5400,6 @@
   verifyGoogleFormat("T** t = new T*;");
   verifyGoogleFormat("T** t = new T*();");
 
-  FormatStyle PointerLeft = getLLVMStyle();
-  PointerLeft.PointerAlignment = FormatStyle::PAS_Left;
-  verifyFormat("delete *x;", PointerLeft);
   verifyFormat("STATIC_ASSERT((a & b) == 0);");
   verifyFormat("STATIC_ASSERT(0 == (a & b));");
   verifyFormat("template <bool a, bool b> "
Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -2202,7 +2202,10 @@
   if (Left.is(tok::l_square) && Right.is(tok::amp))
     return false;
   if (Right.is(TT_PointerOrReference))
-    return (Left.is(tok::r_paren) && Line.MightBeFunctionDecl) ||
+    return (Left.is(tok::r_paren) && Line.MightBeFunctionDecl &&
+            !(Left.MatchingParen && Left.MatchingParen->Previous &&
+              Left.MatchingParen->Previous->isOneOf(tok::kw_typeof,
+                                                    tok::kw_decltype))) ||
            (Left.Tok.isLiteral() || (Left.is(tok::kw_const) && Left.Previous &&
                                      Left.Previous->is(tok::r_paren)) ||
             (!Left.isOneOf(TT_PointerOrReference, tok::l_paren) &&


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