Revert "[clang-format] [PR25010] AllowShortIfStatementsOnASingleLine not working if an "else" statement is present"

This reverts commit b358cbb9b78389e20f7be36e1a98e26515c3ecce.

llvm-svn: 356030

9 files changed, 33 insertions, 171 deletions

diff --git a/clang-tools-extra/docs/clang-tidy/checks/readability-identifier-naming.rst b/clang-tools-extra/docs/clang-tidy/checks/readability-identifier-naming.rst
index 83546c6c3da..d7e88593561 100644
--- a/clang-tools-extra/docs/clang-tidy/checks/readability-identifier-naming.rst
+++ b/clang-tools-extra/docs/clang-tidy/checks/readability-identifier-naming.rst
@@ -9,7 +9,7 @@ This check will try to enforce coding guidelines on the identifiers naming. It
 supports one of the following casing types and tries to convert from one to
 another if a mismatch is detected
 
-Casing types include:
+Casing types inclde:
 
  - ``lower_case``,
  - ``UPPER_CASE``,
diff --git a/clang-tools-extra/docs/conf.py b/clang-tools-extra/docs/conf.py
index 3741fdf544f..16e81051f75 100644
--- a/clang-tools-extra/docs/conf.py
+++ b/clang-tools-extra/docs/conf.py
@@ -26,7 +26,7 @@ from datetime import date
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.todo', 'sphinx.ext.mathjax', 'sphinxcontrib.spelling' ]
+extensions = ['sphinx.ext.todo', 'sphinx.ext.mathjax']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
diff --git a/clang/docs/ClangFormatStyleOptions.rst b/clang/docs/ClangFormatStyleOptions.rst
index d4a56d3bb3c..582b9d938cc 100644
--- a/clang/docs/ClangFormatStyleOptions.rst
+++ b/clang/docs/ClangFormatStyleOptions.rst
@@ -365,47 +365,10 @@ the configuration (without a prefix: ``Auto``).
       };
       void f() { bar(); }
 
-**AllowShortIfStatementsOnASingleLine** (``ShortIfStyle``)
-  Dependent on the value, ``if (a) return 0;`` can be put on a
-  single line.
-
-  Possible values:
-
-  * ``SIS_Never`` (in configuration: ``Never``)
-    Do not allow short if functions.
-
-    .. code-block:: c++
-
-       if (a)
-         return;
-       else
-         return;
-
-  * ``SIS_WithoutElse`` (in configuration: ``WithoutElse``)
-    Allow short if functions on the same line, as long as else
-    is not a compound statement.
 
-    .. code-block:: c++
-
-       if (a) return;
-       else
-         return;
-
-       if (a)
-         return;
-       else {
-         return;
-       }
 
-  * ``SIS_Always`` (in configuration: ``Always``)
-    Allow short if statements even if the else is a compound statement.
-
-    .. code-block:: c++
-
-       if (a) return;
-       else {
-          return;
-       }
+**AllowShortIfStatementsOnASingleLine** (``bool``)
+  If ``true``, ``if (a) return;`` can be put on a single line.
 
 **AllowShortLoopsOnASingleLine** (``bool``)
   If ``true``, ``while (true) continue;`` can be put on a single
diff --git a/clang/include/clang/Format/Format.h b/clang/include/clang/Format/Format.h
index 4d34a559c8e..94cceb30dca 100644
--- a/clang/include/clang/Format/Format.h
+++ b/clang/include/clang/Format/Format.h
@@ -241,38 +241,8 @@ struct FormatStyle {
   /// single line.
   ShortFunctionStyle AllowShortFunctionsOnASingleLine;
 
-  /// Different styles for handling short if lines
-  enum ShortIfStyle {
-    /// Never put short ifs on the same line.
-    /// \code
-    ///   if (a)
-    ///     return ;
-    ///   else {
-    ///     return;
-    ///   }
-    /// \endcode
-    SIS_Never,
-    /// Without else put short ifs on the same line only if
-    /// the else is not a compound statement.
-    /// \code
-    ///   if (a) return;
-    ///   else
-    ///     return;
-    /// \endcode
-    SIS_WithoutElse,
-    /// Always put short ifs on the same line if
-    /// the else is not a compound statement or not.
-    /// \code
-    ///   if (a) return;
-    ///   else {
-    ///     return;
-    ///   }
-    /// \endcode
-    SIS_Always,
-  };
-
   /// If ``true``, ``if (a) return;`` can be put on a single line.
-  ShortIfStyle AllowShortIfStatementsOnASingleLine;
+  bool AllowShortIfStatementsOnASingleLine;
 
   /// If ``true``, ``while (true) continue;`` can be put on a single
   /// line.
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index ce67b82e10b..a56fed9dee1 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -106,18 +106,6 @@ template <> struct ScalarEnumerationTraits<FormatStyle::ShortFunctionStyle> {
   }
 };
 
-template <> struct ScalarEnumerationTraits<FormatStyle::ShortIfStyle> {
-  static void enumeration(IO &IO, FormatStyle::ShortIfStyle &Value) {
-    IO.enumCase(Value, "Never", FormatStyle::SIS_Never);
-    IO.enumCase(Value, "Always", FormatStyle::SIS_Always);
-    IO.enumCase(Value, "WithoutElse", FormatStyle::SIS_WithoutElse);
-
-    // For backward compatibility.
-    IO.enumCase(Value, "false", FormatStyle::SIS_Never);
-    IO.enumCase(Value, "true", FormatStyle::SIS_WithoutElse);
-  }
-};
-
 template <> struct ScalarEnumerationTraits<FormatStyle::BinPackStyle> {
   static void enumeration(IO &IO, FormatStyle::BinPackStyle &Value) {
     IO.enumCase(Value, "Auto", FormatStyle::BPS_Auto);
@@ -643,7 +631,7 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
   LLVMStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
   LLVMStyle.AllowShortBlocksOnASingleLine = false;
   LLVMStyle.AllowShortCaseLabelsOnASingleLine = false;
-  LLVMStyle.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Never;
+  LLVMStyle.AllowShortIfStatementsOnASingleLine = false;
   LLVMStyle.AllowShortLoopsOnASingleLine = false;
   LLVMStyle.AlwaysBreakAfterReturnType = FormatStyle::RTBS_None;
   LLVMStyle.AlwaysBreakAfterDefinitionReturnType = FormatStyle::DRTBS_None;
@@ -749,8 +737,7 @@ FormatStyle getGoogleStyle(FormatStyle::LanguageKind Language) {
 
   GoogleStyle.AccessModifierOffset = -1;
   GoogleStyle.AlignEscapedNewlines = FormatStyle::ENAS_Left;
-  GoogleStyle.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
+  GoogleStyle.AllowShortIfStatementsOnASingleLine = true;
   GoogleStyle.AllowShortLoopsOnASingleLine = true;
   GoogleStyle.AlwaysBreakBeforeMultilineStrings = true;
   GoogleStyle.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
@@ -817,7 +804,7 @@ FormatStyle getGoogleStyle(FormatStyle::LanguageKind Language) {
     GoogleStyle.AlignOperands = false;
     GoogleStyle.AlignTrailingComments = false;
     GoogleStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
-    GoogleStyle.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Never;
+    GoogleStyle.AllowShortIfStatementsOnASingleLine = false;
     GoogleStyle.AlwaysBreakBeforeMultilineStrings = false;
     GoogleStyle.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
     GoogleStyle.ColumnLimit = 100;
@@ -859,8 +846,7 @@ FormatStyle getGoogleStyle(FormatStyle::LanguageKind Language) {
 FormatStyle getChromiumStyle(FormatStyle::LanguageKind Language) {
   FormatStyle ChromiumStyle = getGoogleStyle(Language);
   if (Language == FormatStyle::LK_Java) {
-    ChromiumStyle.AllowShortIfStatementsOnASingleLine =
-        FormatStyle::SIS_WithoutElse;
+    ChromiumStyle.AllowShortIfStatementsOnASingleLine = true;
     ChromiumStyle.BreakAfterJavaFieldAnnotations = true;
     ChromiumStyle.ContinuationIndentWidth = 8;
     ChromiumStyle.IndentWidth = 4;
@@ -873,12 +859,12 @@ FormatStyle getChromiumStyle(FormatStyle::LanguageKind Language) {
     };
     ChromiumStyle.SortIncludes = true;
   } else if (Language == FormatStyle::LK_JavaScript) {
-    ChromiumStyle.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Never;
+    ChromiumStyle.AllowShortIfStatementsOnASingleLine = false;
     ChromiumStyle.AllowShortLoopsOnASingleLine = false;
   } else {
     ChromiumStyle.AllowAllParametersOfDeclarationOnNextLine = false;
     ChromiumStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
-    ChromiumStyle.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Never;
+    ChromiumStyle.AllowShortIfStatementsOnASingleLine = false;
     ChromiumStyle.AllowShortLoopsOnASingleLine = false;
     ChromiumStyle.BinPackParameters = false;
     ChromiumStyle.DerivePointerAlignment = false;
diff --git a/clang/lib/Format/UnwrappedLineFormatter.cpp b/clang/lib/Format/UnwrappedLineFormatter.cpp
index f14e3851c8d..a62755840df 100644
--- a/clang/lib/Format/UnwrappedLineFormatter.cpp
+++ b/clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -413,12 +413,10 @@ private:
     if (I[1]->First->isOneOf(tok::semi, tok::kw_if, tok::kw_for, tok::kw_while,
                              TT_LineComment))
       return 0;
-    // Only inline simple if's (no nested if or else), unless specified
-    if (Style.AllowShortIfStatementsOnASingleLine != FormatStyle::SIS_Always) {
-      if (I + 2 != E && Line.startsWith(tok::kw_if) &&
-          I[2]->First->is(tok::kw_else))
-        return 0;
-    }
+    // Only inline simple if's (no nested if or else).
+    if (I + 2 != E && Line.startsWith(tok::kw_if) &&
+        I[2]->First->is(tok::kw_else))
+      return 0;
     return 1;
   }
 
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 7fcff46f581..650636b7633 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -439,8 +439,7 @@ TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
 
   FormatStyle AllowsMergedIf = getLLVMStyle();
   AllowsMergedIf.AlignEscapedNewlines = FormatStyle::ENAS_Left;
-  AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
+  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
   verifyFormat("if (a)\n"
                "  // comment\n"
                "  f();",
@@ -488,41 +487,6 @@ TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
   verifyFormat("if (a)\n  return;", AllowsMergedIf);
 }
 
-TEST_F(FormatTest, FormatIfWithoutCompoundStatementButElseWith) {
-  FormatStyle AllowsMergedIf = getLLVMStyle();
-  AllowsMergedIf.AlignEscapedNewlines = FormatStyle::ENAS_Left;
-  AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
-  verifyFormat("if (a)\n"
-               "  f();\n"
-               "else {\n"
-               "  g();\n"
-               "}",
-               AllowsMergedIf);
-  verifyFormat("if (a)\n"
-               "  f();\n"
-               "else\n"
-               "  g();\n",
-               AllowsMergedIf);
-
-  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Always;
-
-  verifyFormat("if (a) f();\n"
-               "else {\n"
-               "  g();\n"
-               "}",
-               AllowsMergedIf);
-  verifyFormat("if (a) f();\n"
-               "else {\n"
-               "  if (a) f();\n"
-               "  else {\n"
-               "    g();\n"
-               "  }\n"
-               "  g();\n"
-               "}",
-               AllowsMergedIf);
-}
-
 TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) {
   FormatStyle AllowsMergedLoops = getLLVMStyle();
   AllowsMergedLoops.AllowShortLoopsOnASingleLine = true;
@@ -551,8 +515,7 @@ TEST_F(FormatTest, FormatShortBracedStatements) {
   AllowSimpleBracedStatements.ColumnLimit = 40;
   AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine = true;
 
-  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
+  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true;
   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
 
   AllowSimpleBracedStatements.BreakBeforeBraces = FormatStyle::BS_Custom;
@@ -600,8 +563,7 @@ TEST_F(FormatTest, FormatShortBracedStatements) {
                "};",
                AllowSimpleBracedStatements);
 
-  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_Never;
+  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false;
   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
   verifyFormat("if (true) {\n"
                "  f();\n"
@@ -626,8 +588,7 @@ TEST_F(FormatTest, FormatShortBracedStatements) {
                "}",
                AllowSimpleBracedStatements);
 
-  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
+  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true;
   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
   AllowSimpleBracedStatements.BraceWrapping.AfterControlStatement = true;
 
@@ -664,8 +625,7 @@ TEST_F(FormatTest, FormatShortBracedStatements) {
                "}",
                AllowSimpleBracedStatements);
 
-  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_Never;
+  AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false;
   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
   verifyFormat("if (true)\n"
                "{\n"
@@ -699,7 +659,7 @@ TEST_F(FormatTest, FormatShortBracedStatements) {
 TEST_F(FormatTest, ShortBlocksInMacrosDontMergeWithCodeAfterMacro) {
   FormatStyle Style = getLLVMStyleWithColumns(60);
   Style.AllowShortBlocksOnASingleLine = true;
-  Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
+  Style.AllowShortIfStatementsOnASingleLine = true;
   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
   EXPECT_EQ("#define A                                                  \\\n"
             "  if (HANDLEwernufrnuLwrmviferuvnierv)                     \\\n"
@@ -3197,7 +3157,7 @@ TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) {
 
 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) {
   FormatStyle SingleLine = getLLVMStyle();
-  SingleLine.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
+  SingleLine.AllowShortIfStatementsOnASingleLine = true;
   verifyFormat("#if 0\n"
                "#elif 1\n"
                "#endif\n"
@@ -8040,8 +8000,7 @@ TEST_F(FormatTest, FormatHashIfExpressions) {
 
 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
   FormatStyle AllowsMergedIf = getGoogleStyle();
-  AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
+  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
   verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
   verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
   verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
@@ -10466,8 +10425,7 @@ TEST_F(FormatTest, AllmanBraceBreaking) {
   AllmanBraceStyle.ColumnLimit = 80;
 
   FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle;
-  BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
-      FormatStyle::SIS_WithoutElse;
+  BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine = true;
   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
   verifyFormat("void f(bool b)\n"
                "{\n"
@@ -10929,6 +10887,7 @@ TEST_F(FormatTest, ParsesConfigurationBools) {
   CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
   CHECK_PARSE_BOOL(AllowShortBlocksOnASingleLine);
   CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine);
+  CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine);
   CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
   CHECK_PARSE_BOOL(BinPackArguments);
   CHECK_PARSE_BOOL(BinPackParameters);
@@ -11191,20 +11150,6 @@ TEST_F(FormatTest, ParsesConfiguration) {
   CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation,
               FormatStyle::NI_All);
 
-  Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Always;
-  CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Never",
-              AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
-  CHECK_PARSE("AllowShortIfStatementsOnASingleLine: WithoutElse",
-              AllowShortIfStatementsOnASingleLine,
-              FormatStyle::SIS_WithoutElse);
-  CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Always",
-              AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Always);
-  CHECK_PARSE("AllowShortIfStatementsOnASingleLine: false",
-              AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
-  CHECK_PARSE("AllowShortIfStatementsOnASingleLine: true",
-              AllowShortIfStatementsOnASingleLine,
-              FormatStyle::SIS_WithoutElse);
-
   // FIXME: This is required because parsing a configuration simply overwrites
   // the first N elements of the list instead of resetting it.
   Style.ForEachMacros.clear();
diff --git a/clang/unittests/Format/FormatTestSelective.cpp b/clang/unittests/Format/FormatTestSelective.cpp
index f031a3dee54..b89c04755fd 100644
--- a/clang/unittests/Format/FormatTestSelective.cpp
+++ b/clang/unittests/Format/FormatTestSelective.cpp
@@ -98,7 +98,7 @@ TEST_F(FormatTestSelective, ReformatsMovedLines) {
 }
 
 TEST_F(FormatTestSelective, FormatsIfWithoutCompoundStatement) {
-  Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
+  Style.AllowShortIfStatementsOnASingleLine = true;
   EXPECT_EQ("if (a) return;", format("if(a)\nreturn;", 7, 1));
   EXPECT_EQ("if (a) return; // comment",
             format("if(a)\nreturn; // comment", 20, 1));
diff --git a/llvm/utils/release/build_llvm_package.bat b/llvm/utils/release/build_llvm_package.bat
index 609bb8d990c..8038d798aa0 100755
--- a/llvm/utils/release/build_llvm_package.bat
+++ b/llvm/utils/release/build_llvm_package.bat
@@ -42,13 +42,13 @@ mkdir %build_dir%
 cd %build_dir%

 

 echo Checking out %branch% at r%revision%...

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/llvm/%branch% llvm || exit /b

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/cfe/%branch% llvm/tools/clang || exit /b

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/clang-tools-extra/%branch% llvm/tools/clang/tools/extra || exit /b

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lld/%branch% llvm/tools/lld || exit /b

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/compiler-rt/%branch% llvm/projects/compiler-rt || exit /b

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/openmp/%branch% llvm/projects/openmp || exit /b

-REM svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lldb/%branch% llvm/tools/lldb || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/llvm/%branch% llvm || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/cfe/%branch% llvm/tools/clang || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/clang-tools-extra/%branch% llvm/tools/clang/tools/extra || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lld/%branch% llvm/tools/lld || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/compiler-rt/%branch% llvm/projects/compiler-rt || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/openmp/%branch% llvm/projects/openmp || exit /b

+svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lldb/%branch% llvm/tools/lldb || exit /b

 

 

 REM Setting CMAKE_CL_SHOWINCLUDES_PREFIX to work around PR27226.