[PATCH] D43121: clang-format: keep ObjC colon alignment with short object name

[Francois Ferrand via Phabricator via cfe-commits]

Typz updated this revision to Diff 133596.
Typz marked 2 inline comments as done.
Typz added a comment.

Address review comments


Repository:
  rC Clang

https://reviews.llvm.org/D43121

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


Index: unittests/Format/FormatTestObjC.cpp
===================================================================
--- unittests/Format/FormatTestObjC.cpp
+++ unittests/Format/FormatTestObjC.cpp
@@ -652,8 +652,8 @@
   // Formats pair-parameters.
   verifyFormat("[I drawRectOn:surface ofSize:aa:bbb atOrigin:cc:dd];");
   verifyFormat("[I drawRectOn:surface //\n"
-               "        ofSize:aa:bbb\n"
-               "      atOrigin:cc:dd];");
+               "       ofSize:aa:bbb\n"
+               "     atOrigin:cc:dd];");
 
   Style.ColumnLimit = 70;
   verifyFormat(
@@ -686,6 +686,26 @@
       "                  backing:NSBackingStoreBuffered\n"
       "                    defer:NO]);\n"
       "}");
+
+  // Respect continuation indent and colon alignment (e.g. when object name is
+  // short, and first selector is the longest one)
+  Style = getLLVMStyle();
+  Style.Language = FormatStyle::LK_ObjC;
+  Style.ContinuationIndentWidth = 8;
+  verifyFormat("[self performSelectorOnMainThread:@selector(loadAccessories)\n"
+               "                       withObject:nil\n"
+               "                    waitUntilDone:false];");
+  verifyFormat("[self performSelector:@selector(loadAccessories)\n"
+               "        withObjectOnMainThread:nil\n"
+               "                 waitUntilDone:false];");
+  verifyFormat("[aaaaaaaaaaaaaaaaaaaaaaaaa\n"
+               "        performSelectorOnMainThread:@selector(loadAccessories)\n"
+               "                         withObject:nil\n"
+               "                      waitUntilDone:false];");
+  verifyFormat("[self // force wrapping\n"
+               "        performSelectorOnMainThread:@selector(loadAccessories)\n"
+               "                         withObject:nil\n"
+               "                      waitUntilDone:false];");
 }
 
 TEST_F(FormatTestObjC, ObjCAt) {
Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -571,12 +571,12 @@
             BeforePrevious->is(tok::r_square) ||
             Contexts.back().LongestObjCSelectorName == 0) {
           Tok->Previous->Type = TT_SelectorName;
-          if (Tok->Previous->ColumnWidth >
-              Contexts.back().LongestObjCSelectorName)
-            Contexts.back().LongestObjCSelectorName =
-                Tok->Previous->ColumnWidth;
           if (!Contexts.back().FirstObjCSelectorName)
             Contexts.back().FirstObjCSelectorName = Tok->Previous;
+          else if (Tok->Previous->ColumnWidth >
+                   Contexts.back().LongestObjCSelectorName)
+            Contexts.back().LongestObjCSelectorName =
+                Tok->Previous->ColumnWidth;
         }
       } else if (Contexts.back().ColonIsForRangeExpr) {
         Tok->Type = TT_RangeBasedForLoopColon;
Index: lib/Format/ContinuationIndenter.cpp
===================================================================
--- lib/Format/ContinuationIndenter.cpp
+++ lib/Format/ContinuationIndenter.cpp
@@ -696,7 +696,8 @@
                  ? std::max(State.Stack.back().Indent,
                             State.FirstIndent + Style.ContinuationIndentWidth)
                  : State.Stack.back().Indent) +
-            NextNonComment->LongestObjCSelectorName;
+            std::max(NextNonComment->LongestObjCSelectorName,
+                     NextNonComment->ColumnWidth);
       }
     } else if (State.Stack.back().AlignColons &&
                State.Stack.back().ColonPos <= NextNonComment->ColumnWidth) {
@@ -895,7 +896,8 @@
                   ? std::max(State.Stack.back().Indent,
                              State.FirstIndent + Style.ContinuationIndentWidth)
                   : State.Stack.back().Indent) +
-             NextNonComment->LongestObjCSelectorName -
+             std::max(NextNonComment->LongestObjCSelectorName,
+                      NextNonComment->ColumnWidth) -
              NextNonComment->ColumnWidth;
     }
     if (!State.Stack.back().AlignColons)


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