Clean up formatting of function types.

Before:
int (*func)(void*);
void f() { int(*func)(void*); }

After (consistent space after "int"):
int (*func)(void*);
void f() { int (*func)(void*); }

llvm-svn: 182756

clang/lib/Format/TokenAnnotator.cpp

@@ -141,6 +141,7 @@ private:
       Left->Type = TT_ObjCMethodExpr;
     }
 
+    bool MightBeFunctionType = CurrentToken->is(tok::star);
     while (CurrentToken != NULL) {
       // LookForDecls is set when "if (" has been seen. Check for
       // 'identifier' '*' 'identifier' followed by not '=' -- this
@@ -158,9 +159,9 @@ private:
       }
 
       if (CurrentToken->is(tok::r_paren)) {
-        if (CurrentToken->Children.empty() ||
-            !CurrentToken->Children[0].isOneOf(tok::l_paren, tok::l_square))
-          Left->DefinesFunctionType = false;
+        if (MightBeFunctionType && !CurrentToken->Children.empty() &&
+            CurrentToken->Children[0].isOneOf(tok::l_paren, tok::l_square))
+          Left->Type = TT_FunctionTypeLParen;
         Left->MatchingParen = CurrentToken;
         CurrentToken->MatchingParen = Left;
 
@@ -179,7 +180,7 @@ private:
         return false;
       if (CurrentToken->Parent->Type == TT_PointerOrReference &&
           CurrentToken->Parent->Parent->isOneOf(tok::l_paren, tok::coloncolon))
-        Left->DefinesFunctionType = true;
+        MightBeFunctionType = true;
       updateParameterCount(Left, CurrentToken);
       if (!consumeToken())
         return false;
@@ -699,7 +700,8 @@ private:
     if (NextToken == NULL)
       return TT_Unknown;
 
-    if (PrevToken->is(tok::l_paren) && !IsExpression)
+    if (PrevToken->is(tok::coloncolon) ||
+        (PrevToken->is(tok::l_paren) && !IsExpression))
       return TT_PointerOrReference;
 
     if (PrevToken->isOneOf(tok::l_paren, tok::l_square, tok::l_brace,
@@ -1068,7 +1070,7 @@ bool TokenAnnotator::spaceRequiredBetween(const AnnotatedLine &Line,
     return Left.FormatTok.Tok.isLiteral() ||
            ((Left.Type != TT_PointerOrReference) && Left.isNot(tok::l_paren) &&
             !Style.PointerBindsToType);
-  if (Right.DefinesFunctionType &&
+  if (Right.Type == TT_FunctionTypeLParen &&
       (Left.Type != TT_PointerOrReference || Style.PointerBindsToType))
     return true;
   if (Left.Type == TT_PointerOrReference)

clang/lib/Format/TokenAnnotator.h

@@ -36,6 +36,7 @@ enum TokenType {
   TT_ImplicitStringLiteral,
   TT_InlineASMColon,
   TT_InheritanceColon,
+  TT_FunctionTypeLParen,
   TT_LineComment,
   TT_ObjCArrayLiteral,
   TT_ObjCBlockLParen,
@@ -78,9 +79,8 @@ public:
         ClosesTemplateDeclaration(false), MatchingParen(NULL),
         ParameterCount(0), TotalLength(FormatTok.TokenLength),
         UnbreakableTailLength(0), BindingStrength(0), SplitPenalty(0),
-        LongestObjCSelectorName(0), DefinesFunctionType(false), Parent(NULL),
-        FakeRParens(0), LastInChainOfCalls(false),
-        PartOfMultiVariableDeclStmt(false) {}
+        LongestObjCSelectorName(0), Parent(NULL), FakeRParens(0),
+        LastInChainOfCalls(false), PartOfMultiVariableDeclStmt(false) {}
 
   bool is(tok::TokenKind Kind) const { return FormatTok.Tok.is(Kind); }
 
@@ -171,9 +171,6 @@ public:
   /// definition or call, this contains the length of the longest name.
   unsigned LongestObjCSelectorName;
 
-  /// \brief \c true if this is a "(" that starts a function type definition.
-  bool DefinesFunctionType;
-
   std::vector<AnnotatedToken> Children;
   AnnotatedToken *Parent;
 

clang/unittests/Format/FormatTest.cpp

@@ -2820,6 +2820,7 @@ TEST_F(FormatTest, UnderstandsBinaryOperators) {
 TEST_F(FormatTest, UnderstandsPointersToMembers) {
   verifyFormat("int A::*x;");
   verifyFormat("int (S::*func)(void *);");
+  verifyFormat("void f() { int (S::*func)(void *); }");
   verifyFormat("typedef bool *(Class::*Member)() const;");
   verifyFormat("void f() {\n"
                "  (a->*f)();\n"
@@ -3124,13 +3125,11 @@ TEST_F(FormatTest, FormatsCasts) {
 TEST_F(FormatTest, FormatsFunctionTypes) {
   verifyFormat("A<bool()> a;");
   verifyFormat("A<SomeType()> a;");
-  verifyFormat("A<void(*)(int, std::string)> a;");
+  verifyFormat("A<void (*)(int, std::string)> a;");
   verifyFormat("A<void *(int)>;");
   verifyFormat("void *(*a)(int *, SomeType *);");
-
-  // FIXME: Inconsistent.
   verifyFormat("int (*func)(void *);");
-  verifyFormat("void f() { int(*func)(void *); }");
+  verifyFormat("void f() { int (*func)(void *); }");
 
   verifyGoogleFormat("A<void*(int*, SomeType*)>;");
   verifyGoogleFormat("void* (*a)(int);");
@@ -3691,8 +3690,8 @@ TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
   // protocol lists (but not for template classes):
   //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
 
-  verifyFormat("- (int(*)())foo:(int(*)())f;");
-  verifyGoogleFormat("- (int(*)())foo:(int(*)())foo;");
+  verifyFormat("- (int (*)())foo:(int (*)())f;");
+  verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;");
 
   // If there's no return type (very rare in practice!), LLVM and Google style
   // agree.