r373165 - [clang-format] Reference qualifiers in member templates causing extra indentation.
Paul Hoad via cfe-commits
cfe-commits at lists.llvm.org
Sun Sep 29 06:45:38 PDT 2019
Author: paulhoad
Date: Sun Sep 29 06:45:38 2019
New Revision: 373165
URL: http://llvm.org/viewvc/llvm-project?rev=373165&view=rev
Log:
[clang-format] Reference qualifiers in member templates causing extra indentation.
Summary:
The following code
```
struct f {
template <class T>
void bar() && noexcept {}
};
```
will be formatted to the following with LLVM style, and
`AlwaysBreakTemplateDeclarations: Yes`
```
struct f {
template <class T>
void bar() && noexcept {}
};
```
The indentation of the `void bar()` line is wrong.
Reviewers: klimek, owenpan, krasimir, timwoj, MyDeveloperDay
Reviewed By: klimek, MyDeveloperDay
Subscribers: MyDeveloperDay, ilya-biryukov, llvm-commits, cfe-commits
Patch By: AndWass
Tags: #clang-format, #clang, #llvm
Differential Revision: https://reviews.llvm.org/D68072
Modified:
cfe/trunk/lib/Format/TokenAnnotator.cpp
cfe/trunk/unittests/Format/FormatTest.cpp
Modified: cfe/trunk/lib/Format/TokenAnnotator.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Format/TokenAnnotator.cpp?rev=373165&r1=373164&r2=373165&view=diff
==============================================================================
--- cfe/trunk/lib/Format/TokenAnnotator.cpp (original)
+++ cfe/trunk/lib/Format/TokenAnnotator.cpp Sun Sep 29 06:45:38 2019
@@ -65,7 +65,7 @@ public:
AnnotatingParser(const FormatStyle &Style, AnnotatedLine &Line,
const AdditionalKeywords &Keywords)
: Style(Style), Line(Line), CurrentToken(Line.First), AutoFound(false),
- Keywords(Keywords) {
+ TrailingReturnFound(false), Keywords(Keywords) {
Contexts.push_back(Context(tok::unknown, 1, /*IsExpression=*/false));
resetTokenMetadata(CurrentToken);
}
@@ -1389,7 +1389,11 @@ private:
} else if (Current.is(tok::arrow) && AutoFound && Line.MustBeDeclaration &&
Current.NestingLevel == 0) {
Current.Type = TT_TrailingReturnArrow;
- } else if (Current.isOneOf(tok::star, tok::amp, tok::ampamp)) {
+ TrailingReturnFound = true;
+ } else if (Current.is(tok::star) ||
+ (Current.isOneOf(tok::amp, tok::ampamp) &&
+ (Current.NestingLevel != 0 || !Line.MightBeFunctionDecl ||
+ TrailingReturnFound))) {
Current.Type = determineStarAmpUsage(Current,
Contexts.back().CanBeExpression &&
Contexts.back().IsExpression,
@@ -1412,6 +1416,8 @@ private:
Current.Type = TT_ConditionalExpr;
}
} else if (Current.isBinaryOperator() &&
+ !(Line.MightBeFunctionDecl && Current.NestingLevel == 0 &&
+ Current.isOneOf(tok::amp, tok::ampamp)) &&
(!Current.Previous || Current.Previous->isNot(tok::l_square)) &&
(!Current.is(tok::greater) &&
Style.Language != FormatStyle::LK_TextProto)) {
@@ -1486,10 +1492,12 @@ private:
// colon after this, this is the only place which annotates the identifier
// as a selector.)
Current.Type = TT_SelectorName;
- } else if (Current.isOneOf(tok::identifier, tok::kw_const) &&
+ } else if (Current.isOneOf(tok::identifier, tok::kw_const, tok::amp,
+ tok::ampamp) &&
Current.Previous &&
!Current.Previous->isOneOf(tok::equal, tok::at) &&
- Line.MightBeFunctionDecl && Contexts.size() == 1) {
+ Line.MightBeFunctionDecl && !TrailingReturnFound &&
+ Contexts.size() == 1) {
// Line.MightBeFunctionDecl can only be true after the parentheses of a
// function declaration have been found.
Current.Type = TT_TrailingAnnotation;
@@ -1767,6 +1775,7 @@ private:
AnnotatedLine &Line;
FormatToken *CurrentToken;
bool AutoFound;
+ bool TrailingReturnFound;
const AdditionalKeywords &Keywords;
// Set of "<" tokens that do not open a template parameter list. If parseAngle
@@ -2680,6 +2689,14 @@ bool TokenAnnotator::spaceRequiredBetwee
Right.MatchingParen->endsSequence(TT_DictLiteral, tok::at))
// Objective-C dictionary literal -> no space before closing brace.
return false;
+ if (Right.Type == TT_TrailingAnnotation &&
+ Right.isOneOf(tok::amp, tok::ampamp) &&
+ Left.isOneOf(tok::kw_const, tok::kw_volatile) &&
+ (!Right.Next || Right.Next->is(tok::semi)))
+ // Match const and volatile ref-qualifiers without any additional
+ // qualifiers such as
+ // void Fn() const &;
+ return Style.PointerAlignment != FormatStyle::PAS_Left;
return true;
}
Modified: cfe/trunk/unittests/Format/FormatTest.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/unittests/Format/FormatTest.cpp?rev=373165&r1=373164&r2=373165&view=diff
==============================================================================
--- cfe/trunk/unittests/Format/FormatTest.cpp (original)
+++ cfe/trunk/unittests/Format/FormatTest.cpp Sun Sep 29 06:45:38 2019
@@ -6901,6 +6901,74 @@ TEST_F(FormatTest, UnderstandsFunctionRe
Spaces);
verifyFormat("Deleted &operator=( const Deleted & ) &;", Spaces);
verifyFormat("SomeType MemberFunction( const Deleted & ) &;", Spaces);
+
+ FormatStyle BreakTemplate = getLLVMStyle();
+ BreakTemplate.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int &foo(const std::string &str) & noexcept {}\n"
+ "};",
+ BreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int &foo(const std::string &str) && noexcept {}\n"
+ "};",
+ BreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int &foo(const std::string &str) const & noexcept {}\n"
+ "};",
+ BreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int &foo(const std::string &str) const & noexcept {}\n"
+ "};",
+ BreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " auto foo(const std::string &str) && noexcept -> int & {}\n"
+ "};",
+ BreakTemplate);
+
+ FormatStyle AlignLeftBreakTemplate = getLLVMStyle();
+ AlignLeftBreakTemplate.AlwaysBreakTemplateDeclarations =
+ FormatStyle::BTDS_Yes;
+ AlignLeftBreakTemplate.PointerAlignment = FormatStyle::PAS_Left;
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int& foo(const std::string& str) & noexcept {}\n"
+ "};",
+ AlignLeftBreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int& foo(const std::string& str) && noexcept {}\n"
+ "};",
+ AlignLeftBreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int& foo(const std::string& str) const & noexcept {}\n"
+ "};",
+ AlignLeftBreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " int& foo(const std::string& str) const & noexcept {}\n"
+ "};",
+ AlignLeftBreakTemplate);
+
+ verifyFormat("struct f {\n"
+ " template <class T>\n"
+ " auto foo(const std::string& str) && noexcept -> int& {}\n"
+ "};",
+ AlignLeftBreakTemplate);
}
TEST_F(FormatTest, UnderstandsNewAndDelete) {
More information about the cfe-commits
mailing list