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clang-format: Respect BinPackParameters in Cpp11BracedListStyle. 

With BinPackParameters=false and Cpp11BracedListStyle=true (i.e. mostly
for Chromium):

Before:
  const Aaaaaa aaaaa = {aaaaa, bbbbb,  ccccc,  ddddd,  eeeee, ffffff,
                        ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk};

After:
  const Aaaaaa aaaaa = {aaaaa,
                        bbbbb,
                        ccccc,
                        ddddd,
                        eeeee,
                        ffffff,
                        ggggg,
                        hhhhhh,
                        iiiiii,
                        jjjjjj,
                        kkkkkk};

This fixes llvm.org/PR19359. I am not sure we'll want this in all cases
in the long run, but I'll guess we'll get feedback on that.

llvm-svn: 206458
This commit is contained in:
Daniel Jasper 2014-04-17 11:32:02 +00:00
parent 057fa3a5a5
commit ae8e0d8da9
3 changed files with 37 additions and 1 deletions
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1
clang/lib/Format/ContinuationIndenter.cpp
View File

@ -725,6 +725,7 @@ unsigned ContinuationIndenter::moveStateToNextToken(LineState &State,
AvoidBinPacking = Current.BlockKind == BK_Block ||
Current.Type == TT_ArrayInitializerLSquare ||
Current.Type == TT_DictLiteral ||
!Style.BinPackParameters ||
(NextNoComment &&
NextNoComment->Type == TT_DesignatedInitializerPeriod);
} else {

5
clang/lib/Format/FormatToken.cpp
View File

@ -132,6 +132,11 @@ void CommaSeparatedList::precomputeFormattingInfos(const FormatToken *Token) {
if (!Token->MatchingParen || Token->isNot(tok::l_brace))
return;
// In C++11 braced list style, we should not format in columns unless we allow
// bin-packing of function parameters.
if (Style.Cpp11BracedListStyle && !Style.BinPackParameters)
return;
FormatToken *ItemBegin = Token->Next;
SmallVector<bool, 8> MustBreakBeforeItem;

32
clang/unittests/Format/FormatTest.cpp
View File

@ -5027,7 +5027,7 @@ TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
verifyFormat("return (a)(b) {1, 2, 3};");
}
TEST_F(FormatTest, LayoutCxx11ConstructorBraceInitializers) {
TEST_F(FormatTest, LayoutCxx11BraceInitializers) {
verifyFormat("vector<int> x{1, 2, 3, 4};");
verifyFormat("vector<int> x{\n"
" 1, 2, 3, 4,\n"
@ -5049,6 +5049,36 @@ TEST_F(FormatTest, LayoutCxx11ConstructorBraceInitializers) {
"};");
verifyFormat("vector<int> foo = {::SomeGlobalFunction()};");
// In combination with BinPackParameters = false.
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n"
" bbbbb,\n"
" ccccc,\n"
" ddddd,\n"
" eeeee,\n"
" ffffff,\n"
" ggggg,\n"
" hhhhhh,\n"
" iiiiii,\n"
" jjjjjj,\n"
" kkkkkk};",
NoBinPacking);
verifyFormat("const Aaaaaa aaaaa = {\n"
" aaaaa,\n"
" bbbbb,\n"
" ccccc,\n"
" ddddd,\n"
" eeeee,\n"
" ffffff,\n"
" ggggg,\n"
" hhhhhh,\n"
" iiiiii,\n"
" jjjjjj,\n"
" kkkkkk,\n"
"};",
NoBinPacking);
// FIXME: The alignment of these trailing comments might be bad. Then again,
// this might be utterly useless in real code.
verifyFormat("Constructor::Constructor()\n"