From c94667a810e44c44fd355f9f014ffe161d75d761 Mon Sep 17 00:00:00 2001
From: mydeveloperday <mydeveloperday@gmail.com>
Date: Thu, 25 Nov 2021 11:04:17 +0000
Subject: [PATCH] [clang-format] [PR52595] clang-format does not recognize
 rvalue references to array

https://bugs.llvm.org/show_bug.cgi?id=52595

missing space between `T(&&)` but not between `T (&` due to && being incorrectly thought of as `UnaryOperator`  rather than `PointerOrReference`

```
int operator()(T (&)[N]) { return 0; }
int operator()(T(&&)[N]) { return 1; }
```

Existing Unit tests are changed because actually I think they are originally incorrect, and are inconsistent with the (&) cases that are 4 or 5 lines above them.

Reviewed By: curdeius

Differential Revision: https://reviews.llvm.org/D114519
---
 clang/lib/Format/TokenAnnotator.cpp   |  2 +-
 clang/unittests/Format/FormatTest.cpp | 12 +++++++++---
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 2cd57c1..19f30b5 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -317,7 +317,7 @@ private:
     // void (^ObjCBlock)(void);
     bool MightBeFunctionType = !Contexts[Contexts.size() - 2].IsExpression;
     bool ProbablyFunctionType =
-        CurrentToken->isOneOf(tok::star, tok::amp, tok::caret);
+        CurrentToken->isOneOf(tok::star, tok::amp, tok::ampamp, tok::caret);
     bool HasMultipleLines = false;
     bool HasMultipleParametersOnALine = false;
     bool MightBeObjCForRangeLoop =
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 096d6a3..fb04b4f 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -9670,6 +9670,9 @@ TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
   verifyFormat("void f() { a->operator()(a & a); }");
   verifyFormat("void f() { a.operator()(*a & *a); }");
   verifyFormat("void f() { a->operator()(*a * *a); }");
+
+  verifyFormat("int operator()(T (&&)[N]) { return 1; }");
+  verifyFormat("int operator()(T (&)[N]) { return 0; }");
 }
 
 TEST_F(FormatTest, UnderstandsAttributes) {
@@ -21876,6 +21879,7 @@ TEST_F(FormatTest, OperatorSpacing) {
   verifyFormat("Foo::operator&(void &);", Style);
   verifyFormat("Foo::operator&();", Style);
   verifyFormat("operator&(int (&)(), class Foo);", Style);
+  verifyFormat("operator&&(int (&)(), class Foo);", Style);
 
   verifyFormat("Foo::operator&&();", Style);
   verifyFormat("Foo::operator**();", Style);
@@ -21884,7 +21888,7 @@ TEST_F(FormatTest, OperatorSpacing) {
   verifyFormat("Foo::operator()(void &&);", Style);
   verifyFormat("Foo::operator&&(void &&);", Style);
   verifyFormat("Foo::operator&&();", Style);
-  verifyFormat("operator&&(int(&&)(), class Foo);", Style);
+  verifyFormat("operator&&(int (&&)(), class Foo);", Style);
   verifyFormat("operator const nsTArrayRight<E> &()", Style);
   verifyFormat("[[nodiscard]] operator const nsTArrayRight<E, Allocator> &()",
                Style);
@@ -21935,6 +21939,8 @@ TEST_F(FormatTest, OperatorSpacing) {
   verifyFormat("Foo::operator&(void&);", Style);
   verifyFormat("Foo::operator&();", Style);
   verifyFormat("operator&(int (&)(), class Foo);", Style);
+  verifyFormat("operator&(int (&&)(), class Foo);", Style);
+  verifyFormat("operator&&(int (&&)(), class Foo);", Style);
 
   verifyFormat("Foo::operator&&();", Style);
   verifyFormat("Foo::operator void&&();", Style);
@@ -21945,7 +21951,7 @@ TEST_F(FormatTest, OperatorSpacing) {
   verifyFormat("Foo::operator()(void&&);", Style);
   verifyFormat("Foo::operator&&(void&&);", Style);
   verifyFormat("Foo::operator&&();", Style);
-  verifyFormat("operator&&(int(&&)(), class Foo);", Style);
+  verifyFormat("operator&&(int (&&)(), class Foo);", Style);
   verifyFormat("operator const nsTArrayLeft<E>&()", Style);
   verifyFormat("[[nodiscard]] operator const nsTArrayLeft<E, Allocator>&()",
                Style);
@@ -21986,7 +21992,7 @@ TEST_F(FormatTest, OperatorSpacing) {
   verifyFormat("Foo::operator()(void &&);", Style);
   verifyFormat("Foo::operator&&(void &&);", Style);
   verifyFormat("Foo::operator&&();", Style);
-  verifyFormat("operator&&(int(&&)(), class Foo);", Style);
+  verifyFormat("operator&&(int (&&)(), class Foo);", Style);
 }
 
 TEST_F(FormatTest, OperatorPassedAsAFunctionPtr) {
-- 
2.7.4