[PATCH] D129443: [clang-format] Add option for aligning requires clause body

[Danil Sidoruk via Phabricator via cfe-commits]

eoanermine created this revision.
eoanermine added projects: clang, clang-format.
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- Add an option whether requires clause body should be aligned with `requires` keyword

Fixes https://github.com/llvm/llvm-project/issues/56283


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D129443

Files:
  clang/include/clang/Format/Format.h
  clang/lib/Format/ContinuationIndenter.cpp
  clang/lib/Format/Format.cpp
  clang/unittests/Format/FormatTest.cpp


Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -20033,6 +20033,7 @@
 TEST_F(FormatTest, ParsesConfigurationBools) {
   FormatStyle Style = {};
   Style.Language = FormatStyle::LK_Cpp;
+  CHECK_PARSE_BOOL(AlignRequiresClauseBody);
   CHECK_PARSE_BOOL(AlignTrailingComments);
   CHECK_PARSE_BOOL(AllowAllArgumentsOnNextLine);
   CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -646,6 +646,7 @@
     IO.mapOptional("AlignConsecutiveMacros", Style.AlignConsecutiveMacros);
     IO.mapOptional("AlignEscapedNewlines", Style.AlignEscapedNewlines);
     IO.mapOptional("AlignOperands", Style.AlignOperands);
+    IO.mapOptional("AlignRequiresClauseBody", Style.AlignRequiresClauseBody);
     IO.mapOptional("AlignTrailingComments", Style.AlignTrailingComments);
     IO.mapOptional("AllowAllArgumentsOnNextLine",
                    Style.AllowAllArgumentsOnNextLine);
@@ -1181,6 +1182,7 @@
   LLVMStyle.AlignAfterOpenBracket = FormatStyle::BAS_Align;
   LLVMStyle.AlignArrayOfStructures = FormatStyle::AIAS_None;
   LLVMStyle.AlignOperands = FormatStyle::OAS_Align;
+  LLVMStyle.AlignRequiresClauseBody = true;
   LLVMStyle.AlignTrailingComments = true;
   LLVMStyle.AlignConsecutiveAssignments = {};
   LLVMStyle.AlignConsecutiveAssignments.Enabled = false;
Index: clang/lib/Format/ContinuationIndenter.cpp
===================================================================
--- clang/lib/Format/ContinuationIndenter.cpp
+++ clang/lib/Format/ContinuationIndenter.cpp
@@ -1398,7 +1398,7 @@
     CurrentState.NestedBlockIndent = State.Column + Current.ColumnWidth + 1;
   if (Current.isOneOf(TT_LambdaLSquare, TT_LambdaArrow))
     CurrentState.LastSpace = State.Column;
-  if (Current.is(TT_RequiresExpression))
+  if (Current.is(TT_RequiresExpression) && Style.AlignRequiresClauseBody)
     CurrentState.NestedBlockIndent = State.Column;
 
   // Insert scopes created by fake parenthesis.
Index: clang/include/clang/Format/Format.h
===================================================================
--- clang/include/clang/Format/Format.h
+++ clang/include/clang/Format/Format.h
@@ -369,6 +369,17 @@
   /// \version 3.5
   OperandAlignmentStyle AlignOperands;
 
+  /// If ``true``, aligns requires clause bodies with `requires` keyword.
+  /// \code
+  ///   true:                                   false:
+  ///   template <typename T>                   template <typename T>
+  ///   concept C = requires(T t) {      vs.    concept C = requires(T t) {
+  ///                 ...                         ...
+  ///               }                           }
+  /// \endcode
+  /// \version 15
+  bool AlignRequiresClauseBody;
+
   /// If ``true``, aligns trailing comments.
   /// \code
   ///   true:                                   false:
@@ -3856,6 +3867,7 @@
            AlignConsecutiveMacros == R.AlignConsecutiveMacros &&
            AlignEscapedNewlines == R.AlignEscapedNewlines &&
            AlignOperands == R.AlignOperands &&
+           AlignRequiresClauseBody == R.AlignRequiresClauseBody &&
            AlignTrailingComments == R.AlignTrailingComments &&
            AllowAllArgumentsOnNextLine == R.AllowAllArgumentsOnNextLine &&
            AllowAllParametersOfDeclarationOnNextLine ==


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