Abpostelnicu updated this revision to Diff 90176.
Abpostelnicu added a comment.
added patch against the updated repo.
Repository:
rL LLVM
https://reviews.llvm.org/D30487
Files:
docs/ClangFormatStyleOptions.rst
include/clang/Format/Format.h
lib/Format/ContinuationIndenter.cpp
lib/Format/Format.cpp
lib/Format/FormatToken.h
lib/Format/TokenAnnotator.cpp
unittests/Format/FormatTest.cpp
Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -1020,6 +1020,29 @@
verifyFormat("class ::A::B {};");
}
+TEST_F(FormatTest, BreakBeforeInhertianceDelimiter) {
+ FormatStyle StyleWithInheritanceBreak = getLLVMStyle();
+ LocalStyle.BreakBeforeInhertianceDelimiter = true;
+
+ verifyFormat("class MyClass : public X {}", LocalStyle);
+ verifyFormat("class MyClass\n"
+ " : public X\n"
+ " , public Y // some difficult comment\n"
+ " , public Z {}",
+ StyleWithInheritanceBreak);
+ verifyFormat("class MyClass"
+ " : public X\n"
+ " , public Y // some difficult comment\n"
+ " , public Z\n",
+ StyleWithInheritanceBreak);
+ verifyFormat("class MyClass\n"
+ " : public X // When deriving from more than one class, put "
+ "each on its own\n"
+ " // line.\n"
+ " , public Y {}",
+ StyleWithInheritanceBreak);
+}
+
TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) {
verifyFormat("class A {\n} a, b;");
verifyFormat("struct A {\n} a, b;");
@@ -8468,6 +8491,7 @@
CHECK_PARSE_BOOL(BreakBeforeTernaryOperators);
CHECK_PARSE_BOOL(BreakConstructorInitializersBeforeComma);
CHECK_PARSE_BOOL(BreakStringLiterals);
+ CHECK_PARSE_BOOL(BreakBeforeInhertianceDelimiter)
CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
CHECK_PARSE_BOOL(DerivePointerAlignment);
CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding");
Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -676,6 +676,8 @@
case tok::comma:
if (Contexts.back().InCtorInitializer)
Tok->Type = TT_CtorInitializerComma;
+ else if (Contexts.back().InInhertiance)
+ Tok->Type = TT_InheritanceComma;
else if (Contexts.back().FirstStartOfName &&
(Contexts.size() == 1 || Line.startsWith(tok::kw_for))) {
Contexts.back().FirstStartOfName->PartOfMultiVariableDeclStmt = true;
@@ -945,6 +947,7 @@
bool CanBeExpression = true;
bool InTemplateArgument = false;
bool InCtorInitializer = false;
+ bool InInhertiance = false;
bool CaretFound = false;
bool IsForEachMacro = false;
};
@@ -1004,6 +1007,10 @@
Current.Previous->is(TT_CtorInitializerColon)) {
Contexts.back().IsExpression = true;
Contexts.back().InCtorInitializer = true;
+ } else if (Current.Previous &&
+ Current.Previous->is(TT_InheritanceColon)) {
+ Contexts.back().IsExpression = true;
+ Contexts.back().InInhertiance = true;
} else if (Current.isOneOf(tok::r_paren, tok::greater, tok::comma)) {
for (FormatToken *Previous = Current.Previous;
Previous && Previous->isOneOf(tok::star, tok::amp);
@@ -2388,6 +2395,15 @@
!Tok.isOneOf(TT_ObjCBlockLBrace, TT_DictLiteral);
}
+// Determine if the next token from the closing scope is an inheritance token
+static bool hasMultipleInheritance(const FormatToken &Tok) {
+ // Look for a column of type TT_InheritanceComma untill we find it or
+ // we find a declaration termination
+ for (const FormatToken* nextTok = Tok.Next; nextTok; nextTok = nextTok->Next)
+ if (nextTok->is(TT_InheritanceComma)) return true;
+ return false;
+}
+
bool TokenAnnotator::mustBreakBefore(const AnnotatedLine &Line,
const FormatToken &Right) {
const FormatToken &Left = *Right.Previous;
@@ -2471,6 +2487,11 @@
Style.BreakConstructorInitializersBeforeComma &&
!Style.ConstructorInitializerAllOnOneLineOrOnePerLine)
return true;
+ //Break only if we have multiple inheritance
+ if (Style.BreakBeforeInhertianceDelimiter &&
+ ((Right.is(TT_InheritanceColon) && hasMultipleInheritance(Right)) ||
+ Right.is(TT_InheritanceComma)))
+ return true;
if (Right.is(tok::string_literal) && Right.TokenText.startswith("R\""))
// Raw string literals are special wrt. line breaks. The author has made a
// deliberate choice and might have aligned the contents of the string
@@ -2648,6 +2669,12 @@
if (Right.is(TT_CtorInitializerComma) &&
Style.BreakConstructorInitializersBeforeComma)
return true;
+ if (Left.is(TT_InheritanceComma) &&
+ Style.BreakBeforeInhertianceDelimiter)
+ return false;
+ if (Right.is(TT_InheritanceComma) &&
+ Style.BreakBeforeInhertianceDelimiter)
+ return true;
if ((Left.is(tok::greater) && Right.is(tok::greater)) ||
(Left.is(tok::less) && Right.is(tok::less)))
return false;
Index: lib/Format/FormatToken.h
===================================================================
--- lib/Format/FormatToken.h
+++ lib/Format/FormatToken.h
@@ -48,6 +48,7 @@
TYPE(FunctionTypeLParen) \
TYPE(ImplicitStringLiteral) \
TYPE(InheritanceColon) \
+ TYPE(InheritanceComma) \
TYPE(InlineASMBrace) \
TYPE(InlineASMColon) \
TYPE(JavaAnnotation) \
Index: lib/Format/Format.cpp
===================================================================
--- lib/Format/Format.cpp
+++ lib/Format/Format.cpp
@@ -520,6 +520,7 @@
false, false, false, false, false};
LLVMStyle.BreakAfterJavaFieldAnnotations = false;
LLVMStyle.BreakConstructorInitializersBeforeComma = false;
+ LLVMStyle.BreakBeforeInhertianceDelimiter = false;
LLVMStyle.BreakStringLiterals = true;
LLVMStyle.ColumnLimit = 80;
LLVMStyle.CommentPragmas = "^ IWYU pragma:";
@@ -673,6 +674,7 @@
MozillaStyle.BinPackArguments = false;
MozillaStyle.BreakBeforeBraces = FormatStyle::BS_Mozilla;
MozillaStyle.BreakConstructorInitializersBeforeComma = true;
+ MozillaStyle.BreakBeforeInhertianceDelimiter = true;
MozillaStyle.ConstructorInitializerIndentWidth = 2;
MozillaStyle.ContinuationIndentWidth = 2;
MozillaStyle.Cpp11BracedListStyle = false;
Index: lib/Format/ContinuationIndenter.cpp
===================================================================
--- lib/Format/ContinuationIndenter.cpp
+++ lib/Format/ContinuationIndenter.cpp
@@ -57,8 +57,10 @@
Style.BreakConstructorInitializersBeforeComma)
return true;
return Previous.is(tok::comma) && !Current.isTrailingComment() &&
- (Previous.isNot(TT_CtorInitializerComma) ||
- !Style.BreakConstructorInitializersBeforeComma);
+ ((Previous.isNot(TT_CtorInitializerComma) ||
+ !Style.BreakConstructorInitializersBeforeComma) &&
+ (Previous.isNot(TT_InheritanceComma) ||
+ !Style.BreakBeforeInhertianceDelimiter));
}
ContinuationIndenter::ContinuationIndenter(const FormatStyle &Style,
@@ -741,6 +743,8 @@
return State.FirstIndent + Style.ConstructorInitializerIndentWidth;
if (NextNonComment->is(TT_CtorInitializerComma))
return State.Stack.back().Indent;
+ if (NextNonComment->isOneOf(TT_InheritanceColon, TT_InheritanceComma))
+ return State.FirstIndent + Style.ContinuationIndentWidth;
if (Previous.is(tok::r_paren) && !Current.isBinaryOperator() &&
!Current.isOneOf(tok::colon, tok::comment))
return ContinuationIndent;
@@ -810,6 +814,9 @@
State.Stack.back().AvoidBinPacking = true;
State.Stack.back().BreakBeforeParameter = false;
}
+ if (Current.is(TT_InheritanceColon))
+ State.Stack.back().Indent =
+ State.FirstIndent + Style.ContinuationIndentWidth;
if (Current.isOneOf(TT_BinaryOperator, TT_ConditionalExpr) && Newline)
State.Stack.back().NestedBlockIndent =
State.Column + Current.ColumnWidth + 1;
Index: include/clang/Format/Format.h
===================================================================
--- include/clang/Format/Format.h
+++ include/clang/Format/Format.h
@@ -303,6 +303,11 @@
/// which should not be split into lines or otherwise changed.
std::string CommentPragmas;
+ /// \brief If ``true``, in the class inheritance expression clang-format will
+ /// break before operands ``:`` and ``,`` only if there is multiple
+ /// inheritance.
+ bool BreakBeforeInhertianceDelimiter;
+
/// \brief If the constructor initializers don't fit on a line, put each
/// initializer on its own line.
bool ConstructorInitializerAllOnOneLineOrOnePerLine;
@@ -669,6 +674,8 @@
BreakAfterJavaFieldAnnotations == R.BreakAfterJavaFieldAnnotations &&
BreakStringLiterals == R.BreakStringLiterals &&
ColumnLimit == R.ColumnLimit && CommentPragmas == R.CommentPragmas &&
+ BreakBeforeInhertianceDelimiter ==
+ R.BreakBeforeInhertianceDelimiter &&
ConstructorInitializerAllOnOneLineOrOnePerLine ==
R.ConstructorInitializerAllOnOneLineOrOnePerLine &&
ConstructorInitializerIndentWidth ==
Index: docs/ClangFormatStyleOptions.rst
===================================================================
--- docs/ClangFormatStyleOptions.rst
+++ docs/ClangFormatStyleOptions.rst
@@ -425,6 +425,11 @@
A regular expression that describes comments with special meaning,
which should not be split into lines or otherwise changed.
+**BreakBeforeInhertianceDelimiter** (``boolt``)
+ If ``true``, in the class inheritance expression clang-format will
+ break before operands ``:`` and ``,`` only if there is multiple
+ inheritance.
+
**ConstructorInitializerAllOnOneLineOrOnePerLine** (``bool``)
If the constructor initializers don't fit on a line, put each
initializer on its own line.
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