Add option to avoid "bin-packing" of parameters.

"Bin-packing" here means allowing multiple parameters on one line, if a
function call/declaration is spread over multiple lines.

This is required by the Chromium style guide and probably desired for
the Google style guide. Not making changes to LLVM style as I don't have
enough data.

With this enabled, we format stuff like:
aaaaaaaaaaaaaaa(aaaaaaaaaa,
                aaaaaaaaaa,
		aaaaaaaaaaaaaaaaaaaaaaa).aaaaaaaaaaaaaaaaaa();

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172617 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/clang/Format/Format.h b/include/clang/Format/Format.h
index 19c4c02f82..c32bd5b233 100644
--- a/include/clang/Format/Format.h
+++ b/include/clang/Format/Format.h
@@ -57,6 +57,10 @@ struct FormatStyle {
   /// \brief The number of spaces to before trailing line comments.
   unsigned SpacesBeforeTrailingComments;
 
+  /// \brief If false, a function call's or function definition's parameters
+  /// will either all be on the same line or will have one line each.
+  bool BinPackParameters;
+
   /// \brief If the constructor initializers don't fit on a line, put each
   /// initializer on its own line.
   bool ConstructorInitializerAllOnOneLineOrOnePerLine;