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Fix some alignment and line break decisions.

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This combines two small changes:
1) Put a penalty on breaking after "<"
2) Only produce a hanging indent when parameters are separated by
commas.

Before:
aaaaaaaaaaaaaaaaaaaaaaaa<
    aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);
aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
               aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));

After:
aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);
aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));

This changes one ObjC test, but AFAICT this is not according to any
style guide (neither before nor after). We probably should be aligning
on the ":" there according to:
http://google-styleguide.googlecode.com/svn/trunk/objcguide.xml?showone=Method_Invocations#Method_Invocations

llvm-svn: 173457
This commit is contained in:
Daniel Jasper
2013-01-25 15:43:32 +00:00
parent 0e5becb830
commit 7a31af140b
2 changed files with 13 additions and 4 deletions
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4
clang/lib/Format/Format.cpp
View File

@@ -609,7 +609,7 @@ private:
// Treat the condition inside an if as if it was a second function
// parameter, i.e. let nested calls have an indent of 4.
State.Stack.back().LastSpace = State.Column + 1; // 1 is length of "(".
else if (Spaces > 0 && ParenLevel != 0)
else if (Previous.is(tok::comma) && ParenLevel != 0)
// Top-level spaces are exempt as that mostly leads to better results.
State.Stack.back().LastSpace = State.Column;
}
@@ -706,7 +706,7 @@ private:
if (Right.is(tok::colon) && Right.Type == TT_ObjCMethodExpr)
return 20;
if (Left.is(tok::l_paren))
if (Left.is(tok::l_paren) || Left.Type == TT_TemplateOpener)
return 20;
if (Left.is(tok::question) || Left.Type == TT_ConditionalExpr)

13
clang/unittests/Format/FormatTest.cpp
View File

@@ -909,7 +909,7 @@ TEST_F(FormatTest, ConstructorInitializers) {
// This test takes VERY long when memoization is broken.
std::string input = "Constructor()\n"
" : aaaa(a,\n";
" : aaaa(a,\n";
for (unsigned i = 0, e = 80; i != e; ++i) {
input += " a,\n";
}
@@ -952,6 +952,12 @@ TEST_F(FormatTest, BreaksDesireably) {
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
verifyFormat(
"aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
// This test case breaks on an incorrect memoization, i.e. an optimization not
// taking into account the StopAt value.
@@ -1202,6 +1208,9 @@ TEST_F(FormatTest, WrapsTemplateDeclarations) {
"template <typename T1, typename T2 = char, typename T3 = char,\n"
" typename T4 = char>\n"
"void f();");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
}
TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
@@ -2071,7 +2080,7 @@ TEST_F(FormatTest, FormatObjCMethodExpr) {
verifyFormat(
"void f() {\n"
" if ((self = [super initWithContentRect:contentRect styleMask:styleMask\n"
" backing:NSBackingStoreBuffered defer:YES]))");
" backing:NSBackingStoreBuffered defer:YES]))");
verifyFormat("[foo checkThatBreakingAfterColonWorksOk:\n"
" [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];");