clang-format: Add support for a space after @property

Mozilla and WebKit seem to use a space after @property (verified by
grepping their codebases) so we turn this on there as well.

Change by Christian Legnitto. Thank you!

llvm-svn: 200320

clang/include/clang/Format/Format.h

@@ -163,6 +163,10 @@ struct FormatStyle {
   /// line.
   bool AllowShortFunctionsOnASingleLine;
 
+  /// \brief Add a space after \c @property in Objective-C, i.e. use
+  /// <tt>@property (readonly)</tt> instead of <tt>@property(readonly)</tt>.
+  bool ObjCSpaceAfterProperty;
+
   /// \brief Add a space in front of an Objective-C protocol list, i.e. use
   /// <tt>Foo <Protocol></tt> instead of \c Foo<Protocol>.
   bool ObjCSpaceBeforeProtocolList;
@@ -329,6 +333,7 @@ struct FormatStyle {
            IndentWidth == R.IndentWidth && Language == R.Language &&
            MaxEmptyLinesToKeep == R.MaxEmptyLinesToKeep &&
            NamespaceIndentation == R.NamespaceIndentation &&
+           ObjCSpaceAfterProperty == R.ObjCSpaceAfterProperty &&
            ObjCSpaceBeforeProtocolList == R.ObjCSpaceBeforeProtocolList &&
            PenaltyBreakComment == R.PenaltyBreakComment &&
            PenaltyBreakFirstLessLess == R.PenaltyBreakFirstLessLess &&

clang/lib/Format/Format.cpp

@@ -164,6 +164,7 @@ template <> struct MappingTraits<FormatStyle> {
     IO.mapOptional("IndentCaseLabels", Style.IndentCaseLabels);
     IO.mapOptional("MaxEmptyLinesToKeep", Style.MaxEmptyLinesToKeep);
     IO.mapOptional("NamespaceIndentation", Style.NamespaceIndentation);
+    IO.mapOptional("ObjCSpaceAfterProperty", Style.ObjCSpaceAfterProperty);
     IO.mapOptional("ObjCSpaceBeforeProtocolList",
                    Style.ObjCSpaceBeforeProtocolList);
     IO.mapOptional("PenaltyBreakBeforeFirstCallParameter",
@@ -267,6 +268,7 @@ FormatStyle getLLVMStyle() {
   LLVMStyle.TabWidth = 8;
   LLVMStyle.MaxEmptyLinesToKeep = 1;
   LLVMStyle.NamespaceIndentation = FormatStyle::NI_None;
+  LLVMStyle.ObjCSpaceAfterProperty = false;
   LLVMStyle.ObjCSpaceBeforeProtocolList = true;
   LLVMStyle.PointerBindsToType = false;
   LLVMStyle.SpacesBeforeTrailingComments = 1;
@@ -305,6 +307,7 @@ FormatStyle getGoogleStyle() {
   GoogleStyle.DerivePointerBinding = true;
   GoogleStyle.IndentCaseLabels = true;
   GoogleStyle.IndentFunctionDeclarationAfterType = true;
+  GoogleStyle.ObjCSpaceAfterProperty = false;
   GoogleStyle.ObjCSpaceBeforeProtocolList = false;
   GoogleStyle.PointerBindsToType = true;
   GoogleStyle.SpacesBeforeTrailingComments = 2;
@@ -349,6 +352,7 @@ FormatStyle getMozillaStyle() {
   MozillaStyle.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
   MozillaStyle.DerivePointerBinding = true;
   MozillaStyle.IndentCaseLabels = true;
+  MozillaStyle.ObjCSpaceAfterProperty = true;
   MozillaStyle.ObjCSpaceBeforeProtocolList = false;
   MozillaStyle.PenaltyReturnTypeOnItsOwnLine = 200;
   MozillaStyle.PointerBindsToType = true;
@@ -365,6 +369,7 @@ FormatStyle getWebKitStyle() {
   Style.ColumnLimit = 0;
   Style.IndentWidth = 4;
   Style.NamespaceIndentation = FormatStyle::NI_Inner;
+  Style.ObjCSpaceAfterProperty = true;
   Style.PointerBindsToType = true;
   return Style;
 }

clang/lib/Format/TokenAnnotator.cpp

@@ -1260,6 +1260,9 @@ bool TokenAnnotator::spaceRequiredBetween(const AnnotatedLine &Line,
         (Left.TokenText == "returns" || Left.TokenText == "option"))
       return true;
   }
+  if (Style.ObjCSpaceAfterProperty && Line.Type == LT_ObjCProperty &&
+      Left.Tok.getObjCKeywordID() == tok::objc_property)
+    return true;
   if (Right.is(tok::hashhash))
     return Left.is(tok::hash);
   if (Left.isOneOf(tok::hashhash, tok::hash))

clang/unittests/Format/FormatTest.cpp

@@ -5872,6 +5872,12 @@ TEST_F(FormatTest, ObjCSnippets) {
   verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;");
   verifyFormat("@property(assign, getter=isEditable) BOOL editable;");
   verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;");
+  verifyFormat("@property (assign, getter=isEditable) BOOL editable;",
+               getMozillaStyle());
+  verifyFormat("@property BOOL editable;", getMozillaStyle());
+  verifyFormat("@property (assign, getter=isEditable) BOOL editable;",
+               getWebKitStyle());
+  verifyFormat("@property BOOL editable;", getWebKitStyle());
 
   verifyFormat("@import foo.bar;\n"
                "@import baz;");
@@ -7323,6 +7329,7 @@ TEST_F(FormatTest, ParsesConfiguration) {
   CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
   CHECK_PARSE_BOOL(DerivePointerBinding);
   CHECK_PARSE_BOOL(IndentCaseLabels);
+  CHECK_PARSE_BOOL(ObjCSpaceAfterProperty);
   CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
   CHECK_PARSE_BOOL(PointerBindsToType);
   CHECK_PARSE_BOOL(Cpp11BracedListStyle);