[PATCH] D45498: [clang-format] Don't insert space between ObjC class and lightweight generic

[Ben Hamilton via Phabricator via cfe-commits]

benhamilton created this revision.
benhamilton added reviewers: djasper, jolesiak.
Herald added subscribers: cfe-commits, klimek.

In https://reviews.llvm.org/D45185, I added clang-format parser support for Objective-C
generics. However, I didn't touch the whitespace logic, so they
got the same space logic as Objective-C protocol lists.

In every example in the Apple SDK and in the documentation,
there is no space between the class name and the opening `<`
for the lightweight generic specification, so this diff
removes the space and updates the tests.

Test Plan: Tests updated. Ran tests with:

  % make -j16 FormatTests && ./tools/clang/unittests/Format/FormatTests


Repository:
  rC Clang

https://reviews.llvm.org/D45498

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


Index: unittests/Format/FormatTestObjC.cpp
===================================================================
--- unittests/Format/FormatTestObjC.cpp
+++ unittests/Format/FormatTestObjC.cpp
@@ -299,13 +299,13 @@
                "+ (id)init;\n"
                "@end");
 
-  verifyFormat("@interface Foo <Baz : Blech> : Bar <Baz, Quux> {\n"
+  verifyFormat("@interface Foo<Baz : Blech> : Bar <Baz, Quux> {\n"
                "  int _i;\n"
                "}\n"
                "+ (id)init;\n"
                "@end");
 
-  verifyFormat("@interface Foo <Bar : Baz <Blech>> : Xyzzy <Corge> {\n"
+  verifyFormat("@interface Foo<Bar : Baz <Blech>> : Xyzzy <Corge> {\n"
                "  int _i;\n"
                "}\n"
                "+ (id)init;\n"
Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -2349,9 +2349,15 @@
                : Style.SpacesInParentheses;
   if (Right.isOneOf(tok::semi, tok::comma))
     return false;
-  if (Right.is(tok::less) && Line.Type == LT_ObjCDecl &&
-      Style.ObjCSpaceBeforeProtocolList)
-    return true;
+  if (Right.is(tok::less) && Line.Type == LT_ObjCDecl) {
+    if (Right.MatchingParen && Right.MatchingParen->Next &&
+        Right.MatchingParen->Next->is(tok::colon))
+      // Lightweight generic -> no space. @interface Foo<KeyType> : Bar <Baz>
+      return false;
+    else
+      // Protocol list -> space if configured. @interface Foo : Bar <Baz>
+      return Style.ObjCSpaceBeforeProtocolList;
+  }
   if (Right.is(tok::less) && Left.is(tok::kw_template))
     return Style.SpaceAfterTemplateKeyword;
   if (Left.isOneOf(tok::exclaim, tok::tilde))


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D45498.141891.patch
Type: text/x-patch
Size: 1731 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20180410/549461da/attachment.bin>