[PATCH] D85304: [clang-format] fix BreakBeforeBraces.MultiLine with for each macros

[Vincent Thiberville via Phabricator via cfe-commits]

vthib created this revision.
vthib added reviewers: MyDeveloperDay, mitchell-stellar.
vthib added projects: clang-format, clang, clang-tools-extra.
Herald added a subscriber: cfe-commits.
vthib requested review of this revision.

The MultiLine option in BreakBeforeBraces was only handling standard
control statement, leading to invalid indentation with for each macros:

Previous behavior:

  /* invalid: brace should be on the same line */
  Q_FOREACH(int a; list)
  {
      foo();
  }
  
  /* valid */
  Q_FOREACH(int longVariable;
            list)
  {
      foo();
  }

To fix this, simply add the TT_ForEachMacro kind in the list of
recognized control statements for the multiline option.

This is a fix for https://bugs.llvm.org/show_bug.cgi?id=44632


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D85304

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


Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -1663,6 +1663,20 @@
             "  foo();\n"
             "}",
             format("for(int i=0;i<10;++i){foo();}", Style));
+  EXPECT_EQ("foreach (int i,\n"
+            "         list)\n"
+            "{\n"
+            "  foo();\n"
+            "}",
+            format("foreach(int i, list){foo();}", Style));
+  Style.ColumnLimit =
+      40; // to concentrate at brace wrapping, not line wrap due to column limit
+  EXPECT_EQ("foreach (int i, list) {\n"
+            "  foo();\n"
+            "}",
+            format("foreach(int i, list){foo();}", Style));
+  Style.ColumnLimit =
+      20; // to concentrate at brace wrapping, not line wrap due to column limit
   EXPECT_EQ("while (foo || bar ||\n"
             "       baz)\n"
             "{\n"
Index: clang/lib/Format/UnwrappedLineFormatter.cpp
===================================================================
--- clang/lib/Format/UnwrappedLineFormatter.cpp
+++ clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -309,7 +309,8 @@
     // Try to merge a control statement block with left brace wrapped
     if (I[1]->First->is(tok::l_brace) &&
         (TheLine->First->isOneOf(tok::kw_if, tok::kw_while, tok::kw_for,
-                                 tok::kw_switch, tok::kw_try, tok::kw_do) ||
+                                 tok::kw_switch, tok::kw_try, tok::kw_do,
+                                 TT_ForEachMacro) ||
          (TheLine->First->is(tok::r_brace) && TheLine->First->Next &&
           TheLine->First->Next->isOneOf(tok::kw_else, tok::kw_catch))) &&
         Style.BraceWrapping.AfterControlStatement ==


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