[PATCH] D68415: [clang-format] C++11 braced lists should respect the SpacesInParentheses setting

[Mitchell via Phabricator via cfe-commits]

mitchell-stellar created this revision.
mitchell-stellar added reviewers: MyDeveloperDay, reuk, owenpan.
mitchell-stellar added a project: clang-format.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

According to the clang-format documentation, "Fundamentally, C++11 braced lists are formatted exactly like function calls would be formatted in their place. If the braced list follows a name (e.g. a type or variable name), clang-format formats as if the `{}` were the parentheses of a function call with that name."

This patch furthers the treatment of C++11 braced list braces as parentheses by respecting the `SpacesInParentheses` setting.


Repository:
  rC Clang

https://reviews.llvm.org/D68415

Files:
  clang/lib/Format/TokenAnnotator.cpp
  clang/unittests/Format/FormatTest.cpp


Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -8210,6 +8210,31 @@
   SpaceBeforeBrace.SpaceBeforeCpp11BracedList = true;
   verifyFormat("vector<int> x {1, 2, 3, 4};", SpaceBeforeBrace);
   verifyFormat("f({}, {{}, {}}, MyMap[{k, v}]);", SpaceBeforeBrace);
+
+  FormatStyle SpaceBetweenBraces = getLLVMStyle();
+  SpaceBetweenBraces.SpacesInAngles = true;
+  SpaceBetweenBraces.SpacesInParentheses = true;
+  SpaceBetweenBraces.SpacesInSquareBrackets = true;
+  verifyFormat("vector< int > x{ 1, 2, 3, 4 };", SpaceBetweenBraces);
+  verifyFormat("f( {}, { {}, {} }, MyMap[ { k, v } ] );", SpaceBetweenBraces);
+  verifyFormat("vector< int > x{ // comment 1\n"
+               "                 1, 2, 3, 4 };",
+               SpaceBetweenBraces);
+  SpaceBetweenBraces.ColumnLimit = 20;
+  EXPECT_EQ("vector< int > x{\n"
+            "    1, 2, 3, 4 };",
+            format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
+  SpaceBetweenBraces.ColumnLimit = 24;
+  EXPECT_EQ("vector< int > x{ 1, 2,\n"
+            "                 3, 4 };",
+            format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
+  EXPECT_EQ("vector< int > x{\n"
+            "    1,\n"
+            "    2,\n"
+            "    3,\n"
+            "    4,\n"
+            "};",
+            format("vector<int>x{1,2,3,4,};", SpaceBetweenBraces));
 }
 
 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) {
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -2188,7 +2188,8 @@
     if (Current->is(TT_LineComment)) {
       if (Current->Previous->BlockKind == BK_BracedInit &&
           Current->Previous->opensScope())
-        Current->SpacesRequiredBefore = Style.Cpp11BracedListStyle ? 0 : 1;
+        Current->SpacesRequiredBefore =
+            (Style.Cpp11BracedListStyle && !Style.SpacesInParentheses) ? 0 : 1;
       else
         Current->SpacesRequiredBefore = Style.SpacesBeforeTrailingComments;
 
@@ -2628,7 +2629,7 @@
   if ((Left.is(tok::l_brace) && Left.BlockKind != BK_Block) ||
       (Right.is(tok::r_brace) && Right.MatchingParen &&
        Right.MatchingParen->BlockKind != BK_Block))
-    return !Style.Cpp11BracedListStyle;
+    return Style.Cpp11BracedListStyle ? Style.SpacesInParentheses : true;
   if (Left.is(TT_BlockComment))
     // No whitespace in x(/*foo=*/1), except for JavaScript.
     return Style.Language == FormatStyle::LK_JavaScript ||


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