[clang] [clang-format] add an option to insert a space only for non-code block empty braces, not for empty parentheses (PR #93634)
Kohei Asano via cfe-commits
cfe-commits at lists.llvm.org
Fri Jun 14 00:18:37 PDT 2024
https://github.com/khei4 updated https://github.com/llvm/llvm-project/pull/93634
>From 02b4de5799efe104f1111352d3f586e8779c5cd4 Mon Sep 17 00:00:00 2001
From: Kohei Asano <Kohei.Asano at sony.com>
Date: Mon, 3 Jun 2024 09:15:44 +0900
Subject: [PATCH] [clang-format] add an option to insert a space only for empty
braces
---
clang/docs/ClangFormatStyleOptions.rst | 97 ++++++++++++++-
clang/include/clang/Format/Format.h | 114 ++++++++++++++++--
clang/lib/Format/Format.cpp | 40 ++++++-
clang/lib/Format/TokenAnnotator.cpp | 27 ++++-
clang/lib/Format/UnwrappedLineFormatter.cpp | 23 +++-
clang/unittests/Format/ConfigParseTest.cpp | 9 +-
clang/unittests/Format/FormatTest.cpp | 126 +++++++++++++++++++-
7 files changed, 412 insertions(+), 24 deletions(-)
diff --git a/clang/docs/ClangFormatStyleOptions.rst b/clang/docs/ClangFormatStyleOptions.rst
index bb00c20922d36..9879d122f8d57 100644
--- a/clang/docs/ClangFormatStyleOptions.rst
+++ b/clang/docs/ClangFormatStyleOptions.rst
@@ -6036,12 +6036,103 @@ the configuration (without a prefix: ``Auto``).
**SpaceInEmptyBlock** (``Boolean``) :versionbadge:`clang-format 10` :ref:`¶ <SpaceInEmptyBlock>`
If ``true``, spaces will be inserted into ``{}``.
+ This option is **deprecated**. The previous behavior is preserved by using
+ ``SpaceInEmptyBraces`` with ``Custom`` and by setting ``Block`` in
+ ``SpaceInEmptyBracesOptions`` to ``true``.
+
+.. _SpaceInEmptyBraces:
+
+**SpaceInEmptyBraces** (``SpaceInEmptyBracesStyle``) :versionbadge:`clang-format 19` :ref:`¶ <SpaceInEmptyBraces>`
+ Defines in which cases spaces will be inserted in empty braces.
+
+ Possible values:
+
+ * ``SIEBO_Never`` (in configuration: ``Never``)
+ Never put a space in empty braces.
+
+ .. code-block:: c++
+
+ void f() {}
+ T x{};
+ while (true) {}
+ struct U1 {};
+ union U2 {};
+ class U3 {};
+ enum U4 {};
+
+ * ``SIEBO_Custom`` (in configuration: ``Custom``)
+ Configure each individual space in empty braces in
+ `SpacesInEmptyBracesOptions`.
+
+
+
+.. _SpaceInEmptyBracesOptions:
+
+**SpaceInEmptyBracesOptions** (``SpaceInEmptyBracesCustom``) :versionbadge:`clang-format 19` :ref:`¶ <SpaceInEmptyBracesOptions>`
+ Control of individual spaces in empty braces.
+
+ If ``SpaceInEmptyBraces`` is set to ``Custom``, use this to specify
+ how each individual space in empty braces case should be handled.
+ Otherwise, this is ignored.
+
+ .. code-block:: yaml
+
+ # Example of usage:
+ SpaceInEmptyBraces: Custom
+ SpaceInEmptyBracesOptions:
+ Function: true
+ Record: false
+ InitList: true
+ Block: false
+
+ Nested configuration flags:
+
+ Precise control over the spacing in empty braces.
.. code-block:: c++
- true: false:
- void f() { } vs. void f() {}
- while (true) { } while (true) {}
+ # Should be declared this way:
+ SpaceInEmptyBraces: Custom
+ SpaceInEmptyBracesOptions:
+ Function: true
+ Record: false
+ InitList: true
+ Block: false
+
+ * ``bool Function`` Put a space in empty braces of function definition.
+
+ .. code-block:: c++
+
+ true: false:
+ void f() { } vs. void f() {}
+
+ * ``bool Record`` Put a space in empty braces of record/struct definition.
+
+ .. code-block:: c++
+
+ true: false:
+ struct U1 { }; vs. struct U1 {};
+ union U2 { }; union U2 {};
+ class U3 { }; class U3 {};
+ enum U4 { }; enum U4 {};
+
+ * ``bool InitList`` Put a space in empty braces of initializer list.
+
+ .. code-block:: c++
+
+ true: false:
+ T x{ }; vs. T x{};
+
+ * ``bool Block`` Put a space in empty braces of other blocks, including functions and
+ record, compatible with ``SpaceInEmptyBlock``.
+
+ .. code-block:: c++
+
+ true: false:
+ void f() { } vs. void f() {}
+ enum Unit { }; enum Unit {};
+ while (true) { } while (true) {}
+
.. _SpaceInEmptyParentheses:
diff --git a/clang/include/clang/Format/Format.h b/clang/include/clang/Format/Format.h
index 4fd6e013df25b..661147a454694 100644
--- a/clang/include/clang/Format/Format.h
+++ b/clang/include/clang/Format/Format.h
@@ -4493,13 +4493,11 @@ struct FormatStyle {
bool SpaceBeforeRangeBasedForLoopColon;
/// If ``true``, spaces will be inserted into ``{}``.
- /// \code
- /// true: false:
- /// void f() { } vs. void f() {}
- /// while (true) { } while (true) {}
- /// \endcode
+ /// This option is **deprecated**. The previous behavior is preserved by using
+ /// ``SpaceInEmptyBraces`` with ``Custom`` and by setting ``Block`` in
+ /// ``SpaceInEmptyBracesOptions`` to ``true``.
/// \version 10
- bool SpaceInEmptyBlock;
+ // bool SpaceInEmptyBlock;
/// If ``true``, spaces may be inserted into ``()``.
/// This option is **deprecated**. See ``InEmptyParentheses`` of
@@ -4721,6 +4719,107 @@ struct FormatStyle {
/// \version 17
SpacesInParensCustom SpacesInParensOptions;
+ /// Different ways to put a space in empty braces.
+ enum SpaceInEmptyBracesStyle : int8_t {
+ /// Never put a space in empty braces.
+ /// \code
+ /// void f() {}
+ /// T x{};
+ /// while (true) {}
+ /// struct U1 {};
+ /// union U2 {};
+ /// class U3 {};
+ /// enum U4 {};
+ /// \endcode
+ SIEBO_Never,
+ /// Always put a space in empty braces.
+ SIEBO_Always,
+ /// Configure each individual space in empty braces in
+ /// `SpacesInEmptyBracesOptions`.
+ SIEBO_Custom,
+ };
+
+ /// Defines in which cases spaces will be inserted in empty braces.
+ /// \version 19
+ SpaceInEmptyBracesStyle SpaceInEmptyBraces;
+
+ /// Precise control over the spacing in empty braces.
+ /// \code
+ /// # Should be declared this way:
+ /// SpaceInEmptyBraces: Custom
+ /// SpaceInEmptyBracesOptions:
+ /// Function: true
+ /// Record: false
+ /// InitList: true
+ /// Block: false
+ /// \endcode
+ struct SpaceInEmptyBracesCustom {
+ /// Put a space in empty braces of function definition.
+ /// \code
+ /// true: false:
+ /// void f() { } vs. void f() {}
+ /// \endcode
+ bool Function;
+ /// Put a space in empty braces of record/struct definition.
+ /// \code
+ /// true: false:
+ /// struct U1 { }; vs. struct U1 {};
+ /// union U2 { }; union U2 {};
+ /// class U3 { }; class U3 {};
+ /// enum U4 { }; enum U4 {};
+ /// \endcode
+ bool Record;
+ /// Put a space in empty braces of initializer list.
+ /// \code
+ /// true: false:
+ /// T x{ }; vs. T x{};
+ /// \endcode
+ bool InitList;
+ /// Put a space in empty braces of other blocks, including functions and
+ /// record, compatible with ``SpaceInEmptyBlock``.
+ /// \code
+ /// true: false:
+ /// void f() { } vs. void f() {}
+ /// enum Unit { }; enum Unit {};
+ /// while (true) { } while (true) {}
+ /// \endcode
+ bool Block;
+
+ SpaceInEmptyBracesCustom()
+ : Function(false), Record(false), InitList(false), Block(false) {}
+
+ SpaceInEmptyBracesCustom(bool Function, bool Record, bool InitList,
+ bool Block)
+ : Function(Function), Record(Record), InitList(InitList), Block(Block) {
+ }
+
+ bool operator==(const SpaceInEmptyBracesCustom &R) const {
+ return Function == R.Function && Record == R.Record &&
+ InitList == R.InitList && Block == R.Block;
+ }
+
+ bool operator!=(const SpaceInEmptyBracesCustom &R) const {
+ return !(*this == R);
+ }
+ };
+
+ /// Control of individual spaces in empty braces.
+ ///
+ /// If ``SpaceInEmptyBraces`` is set to ``Custom``, use this to specify
+ /// how each individual space in empty braces case should be handled.
+ /// Otherwise, this is ignored.
+ /// \code{.yaml}
+ /// # Example of usage:
+ /// SpaceInEmptyBraces: Custom
+ /// SpaceInEmptyBracesOptions:
+ /// Function: true
+ /// Record: false
+ /// InitList: true
+ /// Block: false
+ /// \endcode
+ /// \version 19
+ SpaceInEmptyBracesCustom SpaceInEmptyBracesOptions;
+
/// If ``true``, spaces will be inserted after ``[`` and before ``]``.
/// Lambdas without arguments or unspecified size array declarations will not
/// be affected.
@@ -5094,7 +5193,8 @@ struct FormatStyle {
SpaceBeforeRangeBasedForLoopColon ==
R.SpaceBeforeRangeBasedForLoopColon &&
SpaceBeforeSquareBrackets == R.SpaceBeforeSquareBrackets &&
- SpaceInEmptyBlock == R.SpaceInEmptyBlock &&
+ SpaceInEmptyBraces == R.SpaceInEmptyBraces &&
+ SpaceInEmptyBracesOptions == R.SpaceInEmptyBracesOptions &&
SpacesBeforeTrailingComments == R.SpacesBeforeTrailingComments &&
SpacesInAngles == R.SpacesInAngles &&
SpacesInContainerLiterals == R.SpacesInContainerLiterals &&
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index c015e03fa15e7..1a3446f9c883d 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -719,6 +719,24 @@ template <> struct MappingTraits<FormatStyle::SpacesInLineComment> {
}
};
+template <> struct MappingTraits<FormatStyle::SpaceInEmptyBracesCustom> {
+ static void mapping(IO &IO, FormatStyle::SpaceInEmptyBracesCustom &Space) {
+ IO.mapOptional("Function", Space.Function);
+ IO.mapOptional("Record", Space.Record);
+ IO.mapOptional("InitList", Space.InitList);
+ IO.mapOptional("Block", Space.Block);
+ }
+};
+
+template <>
+struct ScalarEnumerationTraits<FormatStyle::SpaceInEmptyBracesStyle> {
+ static void enumeration(IO &IO, FormatStyle::SpaceInEmptyBracesStyle &Value) {
+ IO.enumCase(Value, "Never", FormatStyle::SIEBO_Never);
+ IO.enumCase(Value, "Always", FormatStyle::SIEBO_Always);
+ IO.enumCase(Value, "Custom", FormatStyle::SIEBO_Custom);
+ }
+};
+
template <> struct MappingTraits<FormatStyle::SpacesInParensCustom> {
static void mapping(IO &IO, FormatStyle::SpacesInParensCustom &Spaces) {
IO.mapOptional("InCStyleCasts", Spaces.InCStyleCasts);
@@ -850,6 +868,7 @@ template <> struct MappingTraits<FormatStyle> {
bool UseCRLF = false;
bool SpaceInEmptyParentheses = false;
+ bool SpaceInEmptyBlock = false;
bool SpacesInConditionalStatement = false;
bool SpacesInCStyleCastParentheses = false;
bool SpacesInParentheses = false;
@@ -876,6 +895,7 @@ template <> struct MappingTraits<FormatStyle> {
IO.mapOptional("SpaceAfterControlStatementKeyword",
Style.SpaceBeforeParens);
IO.mapOptional("SpaceInEmptyParentheses", SpaceInEmptyParentheses);
+ IO.mapOptional("SpaceInEmptyBlock", SpaceInEmptyBlock);
IO.mapOptional("SpacesInConditionalStatement",
SpacesInConditionalStatement);
IO.mapOptional("SpacesInCStyleCastParentheses",
@@ -1092,7 +1112,6 @@ template <> struct MappingTraits<FormatStyle> {
Style.SpaceBeforeRangeBasedForLoopColon);
IO.mapOptional("SpaceBeforeSquareBrackets",
Style.SpaceBeforeSquareBrackets);
- IO.mapOptional("SpaceInEmptyBlock", Style.SpaceInEmptyBlock);
IO.mapOptional("SpacesBeforeTrailingComments",
Style.SpacesBeforeTrailingComments);
IO.mapOptional("SpacesInAngles", Style.SpacesInAngles);
@@ -1100,6 +1119,9 @@ template <> struct MappingTraits<FormatStyle> {
Style.SpacesInContainerLiterals);
IO.mapOptional("SpacesInLineCommentPrefix",
Style.SpacesInLineCommentPrefix);
+ IO.mapOptional("SpaceInEmptyBraces", Style.SpaceInEmptyBraces);
+ IO.mapOptional("SpaceInEmptyBracesOptions",
+ Style.SpaceInEmptyBracesOptions);
IO.mapOptional("SpacesInParens", Style.SpacesInParens);
IO.mapOptional("SpacesInParensOptions", Style.SpacesInParensOptions);
IO.mapOptional("SpacesInSquareBrackets", Style.SpacesInSquareBrackets);
@@ -1194,6 +1216,15 @@ template <> struct MappingTraits<FormatStyle> {
}
Style.SpacesInParens = FormatStyle::SIPO_Custom;
}
+
+ if (Style.SpaceInEmptyBraces != FormatStyle::SIEBO_Custom &&
+ SpaceInEmptyBlock) {
+ Style.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ Style.SpaceInEmptyBracesOptions.Function = true;
+ Style.SpaceInEmptyBracesOptions.Record = true;
+ Style.SpaceInEmptyBracesOptions.InitList = false;
+ Style.SpaceInEmptyBracesOptions.Block = true;
+ }
}
};
@@ -1563,7 +1594,7 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
LLVMStyle.SpaceBeforeParensOptions.AfterIfMacros = true;
LLVMStyle.SpaceBeforeRangeBasedForLoopColon = true;
LLVMStyle.SpaceBeforeSquareBrackets = false;
- LLVMStyle.SpaceInEmptyBlock = false;
+ LLVMStyle.SpaceInEmptyBraces = FormatStyle::SIEBO_Never;
LLVMStyle.SpacesBeforeTrailingComments = 1;
LLVMStyle.SpacesInAngles = FormatStyle::SIAS_Never;
LLVMStyle.SpacesInContainerLiterals = true;
@@ -1864,7 +1895,10 @@ FormatStyle getWebKitStyle() {
Style.ObjCSpaceAfterProperty = true;
Style.PointerAlignment = FormatStyle::PAS_Left;
Style.SpaceBeforeCpp11BracedList = true;
- Style.SpaceInEmptyBlock = true;
+ Style.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ Style.SpaceInEmptyBracesOptions.Block = true;
+ Style.SpacesInParensOptions.InEmptyParentheses = false;
+ Style.SpacesInParensOptions.Other = false;
return Style;
}
diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 26c0aa36bdcb6..198800d586700 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -4337,15 +4337,32 @@ bool TokenAnnotator::spaceRequiredBetween(const AnnotatedLine &Line,
return Left.is(tok::hash);
if (Left.isOneOf(tok::hashhash, tok::hash))
return Right.is(tok::hash);
- if (Left.is(BK_Block) && Right.is(tok::r_brace) &&
- Right.MatchingParen == &Left && Line.Children.empty()) {
- return Style.SpaceInEmptyBlock;
- }
+
if ((Left.is(tok::l_paren) && Right.is(tok::r_paren)) ||
(Left.is(tok::l_brace) && Left.isNot(BK_Block) &&
- Right.is(tok::r_brace) && Right.isNot(BK_Block))) {
+ Right.is(tok::r_brace) && Right.isNot(BK_Block) &&
+ Style.SpaceInEmptyBraces == FormatStyle::SIEBO_Never)) {
return Style.SpacesInParensOptions.InEmptyParentheses;
}
+ // Other braces for records are handled in tryMergeSimpleBlock on
+ // UnwrappedLineFormatter.cpp.
+ if (Left.is(tok::l_brace) && Right.is(tok::r_brace) &&
+ Right.MatchingParen == &Left && Line.Children.empty()) {
+ if (Style.SpaceInEmptyBraces == FormatStyle::SIEBO_Never)
+ return false;
+ if (Style.SpaceInEmptyBraces == FormatStyle::SIEBO_Always)
+ return true;
+ if (Style.SpaceInEmptyBraces == FormatStyle::SIEBO_Custom) {
+ if (Left.is(BK_BracedInit) && Right.is(BK_BracedInit))
+ return Style.SpaceInEmptyBracesOptions.InitList;
+ if (Left.is(TT_EnumLBrace) && Right.is(TT_EnumRBrace)) {
+ return Style.SpaceInEmptyBracesOptions.Record ||
+ Style.SpaceInEmptyBracesOptions.Block;
+ }
+ if (Left.is(BK_Block))
+ return Style.SpaceInEmptyBracesOptions.Block;
+ }
+ }
if (Style.SpacesInParensOptions.InConditionalStatements) {
const FormatToken *LeftParen = nullptr;
if (Left.is(tok::l_paren))
diff --git a/clang/lib/Format/UnwrappedLineFormatter.cpp b/clang/lib/Format/UnwrappedLineFormatter.cpp
index 4d53361aaf333..f46af2425ed81 100644
--- a/clang/lib/Format/UnwrappedLineFormatter.cpp
+++ b/clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -823,12 +823,29 @@ class LineJoiner {
if (ShouldMerge()) {
// We merge empty blocks even if the line exceeds the column limit.
+ bool braceRequireSpace = false;
+ if (Style.SpaceInEmptyBraces == FormatStyle::SIEBO_Always) {
+ braceRequireSpace =
+ Line.Last->isOneOf(TT_StructLBrace, TT_UnionLBrace,
+ TT_ClassLBrace, TT_FunctionLBrace) ||
+ Line.Last->is(BK_Block);
+ } else if (Style.SpaceInEmptyBraces == FormatStyle::SIEBO_Custom) {
+ if (Style.SpaceInEmptyBracesOptions.Record) {
+ braceRequireSpace |= Line.Last->isOneOf(
+ TT_StructLBrace, TT_UnionLBrace, TT_ClassLBrace);
+ }
+ if (Style.SpaceInEmptyBracesOptions.Function)
+ braceRequireSpace |= Line.Last->is(TT_FunctionLBrace);
+ if (Style.SpaceInEmptyBracesOptions.Block)
+ braceRequireSpace |= Line.Last->is(BK_Block);
+ }
Tok->SpacesRequiredBefore =
- (Style.SpaceInEmptyBlock || Line.Last->is(tok::comment)) ? 1 : 0;
+ (braceRequireSpace || Line.Last->is(tok::comment)) ? 1 : 0;
Tok->CanBreakBefore = true;
return 1;
- } else if (Limit != 0 && !Line.startsWithNamespace() &&
- !startsExternCBlock(Line)) {
+ }
+ if (Limit != 0 && !Line.startsWithNamespace() &&
+ !startsExternCBlock(Line)) {
// We don't merge short records.
if (isRecordLBrace(*Line.Last))
return 0;
diff --git a/clang/unittests/Format/ConfigParseTest.cpp b/clang/unittests/Format/ConfigParseTest.cpp
index ff3ced38a1f31..3ebc503955e54 100644
--- a/clang/unittests/Format/ConfigParseTest.cpp
+++ b/clang/unittests/Format/ConfigParseTest.cpp
@@ -187,7 +187,6 @@ TEST(ConfigParseTest, ParsesConfigurationBools) {
CHECK_PARSE_BOOL(RemoveSemicolon);
CHECK_PARSE_BOOL(SkipMacroDefinitionBody);
CHECK_PARSE_BOOL(SpacesInSquareBrackets);
- CHECK_PARSE_BOOL(SpaceInEmptyBlock);
CHECK_PARSE_BOOL(SpacesInContainerLiterals);
CHECK_PARSE_BOOL(SpaceAfterCStyleCast);
CHECK_PARSE_BOOL(SpaceAfterTemplateKeyword);
@@ -235,6 +234,8 @@ TEST(ConfigParseTest, ParsesConfigurationBools) {
CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterOverloadedOperator);
CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterPlacementOperator);
CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, BeforeNonEmptyParentheses);
+ CHECK_PARSE_NESTED_BOOL(SpaceInEmptyBracesOptions, Block);
+ CHECK_PARSE_NESTED_BOOL(SpaceInEmptyBracesOptions, InitList);
CHECK_PARSE_NESTED_BOOL(SpacesInParensOptions, InCStyleCasts);
CHECK_PARSE_NESTED_BOOL(SpacesInParensOptions, InConditionalStatements);
CHECK_PARSE_NESTED_BOOL(SpacesInParensOptions, InEmptyParentheses);
@@ -638,6 +639,12 @@ TEST(ConfigParseTest, ParsesConfiguration) {
Style.SpacesInParens = FormatStyle::SIPO_Never;
Style.SpacesInParensOptions = {};
+ // For backward compatibility
+ Style.SpaceInEmptyBraces = FormatStyle::SIEBO_Never;
+ Style.SpaceInEmptyBracesOptions = {};
+ CHECK_PARSE("SpaceInEmptyBlock: true", SpaceInEmptyBracesOptions,
+ FormatStyle::SpaceInEmptyBracesCustom(true, true, false, true));
+
Style.ColumnLimit = 123;
FormatStyle BaseStyle = getLLVMStyle();
CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 4e427268fb82a..a7848a7fca18d 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -6981,7 +6981,8 @@ TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
verifyFormat("enum E {};");
verifyFormat("enum E {}");
FormatStyle Style = getLLVMStyle();
- Style.SpaceInEmptyBlock = true;
+ Style.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ Style.SpaceInEmptyBracesOptions.Block = true;
verifyFormat("void f() { }", "void f() {}", Style);
Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
verifyFormat("{ }", Style);
@@ -7009,7 +7010,8 @@ TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
Style);
Style = getLLVMStyle(FormatStyle::LK_CSharp);
- Style.SpaceInEmptyBlock = true;
+ Style.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ Style.SpaceInEmptyBracesOptions.Block = true;
verifyFormat("Event += () => { };", Style);
}
@@ -14046,9 +14048,129 @@ TEST_F(FormatTest, LayoutCxx11BraceInitializers) {
verifyFormat("vector< int > x{};", SpaceBetweenBraces);
SpaceBetweenBraces.SpacesInParens = FormatStyle::SIPO_Custom;
SpaceBetweenBraces.SpacesInParensOptions.InEmptyParentheses = true;
+ SpaceBetweenBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ SpaceBetweenBraces.SpaceInEmptyBracesOptions.InitList = true;
verifyFormat("vector< int > x{ };", SpaceBetweenBraces);
}
+TEST_F(FormatTest, EmptyBracesTest) {
+ FormatStyle SpaceInEmptyBraces = getLLVMStyle();
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Never;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f() {}\n"
+ "struct Unit {};\n"
+ "union U2 {};\n"
+ "class U3 {};\n"
+ "enum U4 {};\n"
+ "int x{};\n"
+ "while (true) {}\n"
+ "auto a = [] {};\n"
+ "toImpl(listenerRef)->use({});\n",
+ SpaceInEmptyBraces);
+
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Always;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f() { }\n"
+ "struct Unit { };\n"
+ "union U2 { };\n"
+ "class U3 { };\n"
+ "enum U4 { };\n"
+ "int x{ };\n"
+ "while (true) { }\n"
+ "auto a = [] { };\n"
+ "toImpl(listenerRef)->use({ });\n",
+ SpaceInEmptyBraces);
+
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Function = true;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Record = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.InitList = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Block = false;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f() { }\n"
+ "struct Unit {};\n"
+ "union U2 {};\n"
+ "class U3 {};\n"
+ "enum U4 {};\n"
+ "int x{};\n"
+ "while (true) {}\n"
+ "auto a = [] {};\n"
+ "toImpl(listenerRef)->use({});\n",
+ SpaceInEmptyBraces);
+
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Function = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Record = true;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.InitList = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Block = false;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f() {}\n"
+ "struct Unit { };\n"
+ "union U2 { };\n"
+ "class U3 { };\n"
+ "enum U4 { };\n"
+ "int x{};\n"
+ "while (true) {}\n"
+ "auto a = [] {};\n"
+ "toImpl(listenerRef)->use({});\n",
+ SpaceInEmptyBraces);
+
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Function = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Record = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.InitList = true;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Block = false;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f() {}\n"
+ "struct Unit {};\n"
+ "union U2 {};\n"
+ "class U3 {};\n"
+ "enum U4 {};\n"
+ "int x{ };\n"
+ "while (true) {}\n"
+ "auto a = [] {};\n"
+ "toImpl(listenerRef)->use({ });\n",
+ SpaceInEmptyBraces);
+
+ // Compatible with SpaceInEmptyBlock.
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Function = true;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Record = true;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.InitList = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Block = true;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f() { }\n"
+ "struct Unit { };\n"
+ "union U2 { };\n"
+ "class U3 { };\n"
+ "enum U4 { };\n"
+ "int x{};\n"
+ "while (true) { }\n"
+ "auto a = [] { };\n"
+ "toImpl(listenerRef)->use({});\n",
+ SpaceInEmptyBraces);
+
+ // We can insert a space only for parens by overwriting
+ // SpacesInParensOptions.InEmptyParentheses.
+ SpaceInEmptyBraces.SpaceInEmptyBraces = FormatStyle::SIEBO_Custom;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Function = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Record = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.InitList = false;
+ SpaceInEmptyBraces.SpaceInEmptyBracesOptions.Block = false;
+ SpaceInEmptyBraces.SpacesInParens = FormatStyle::SIPO_Custom;
+ SpaceInEmptyBraces.SpacesInParensOptions.InEmptyParentheses = true;
+ SpaceInEmptyBraces.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
+ verifyFormat("void f( ) {}\n"
+ "struct Unit {};\n"
+ "union U2 {};\n"
+ "enum U3 {};\n"
+ "int x{};\n"
+ "while (true) {}\n"
+ "auto a = [] {};\n"
+ "toImpl(listenerRef)->use({});\n",
+ SpaceInEmptyBraces);
+}
+
TEST_F(FormatTest, FormatsBracedListsInColumnLayout) {
verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
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