[PATCH] D94906: [clang-format] Apply Allman style to lambdas

[Björn Schäpers via Phabricator via cfe-commits]

HazardyKnusperkeks created this revision.
HazardyKnusperkeks added reviewers: MyDeveloperDay, curdeius.
HazardyKnusperkeks added a project: clang-format.
HazardyKnusperkeks requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

According to https://lists.llvm.org/pipermail/cfe-dev/2021-January/067481.html


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94906

Files:
  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
@@ -13481,6 +13481,57 @@
                "#endif",
                AllmanBraceStyle);
 
+  EXPECT_EQ(AllmanBraceStyle.AllowShortLambdasOnASingleLine, 
FormatStyle::SLS_All);
+
+  verifyFormat("[](int i) { return i + 2; };\n"
+               "[](int i, int j)\n"
+               "{\n"
+               "  auto x = i + j;\n"
+               "  auto y = i * j;\n"
+               "  return x ^ y;\n"
+               "};\n"
+               "void foo()\n"
+               "{\n"
+               "  auto shortLambda = [](int i) { return i + 2; };\n"
+               "  auto longLambda = [](int i, int j)\n"
+               "  {\n"
+               "    auto x = i + j;\n"
+               "    auto y = i * j;\n"
+               "    return x ^ y;\n"
+               "  };\n"
+               "}",
+               AllmanBraceStyle);
+
+  AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
+
+  verifyFormat("[](int i)\n"
+               "{\n"
+               "  return i + 2;\n"
+               "};\n"
+               "[](int i, int j)\n"
+               "{\n"
+               "  auto x = i + j;\n"
+               "  auto y = i * j;\n"
+               "  return x ^ y;\n"
+               "};\n"
+               "void foo()\n"
+               "{\n"
+               "  auto shortLambda = [](int i)\n"
+               "  {\n"
+               "    return i + 2;\n"
+               "  };\n"
+               "  auto longLambda = [](int i, int j)\n"
+               "  {\n"
+               "    auto x = i + j;\n"
+               "    auto y = i * j;\n"
+               "    return x ^ y;\n"
+               "  };\n"
+               "}",
+               AllmanBraceStyle);
+
+  // Reset
+  AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_All;
+
   // This shouldn't affect ObjC blocks..
   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
                "  // ...\n"
Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -817,6 +817,7 @@
     Expanded.IndentExternBlock = FormatStyle::IEBS_AfterExternBlock;
     Expanded.BraceWrapping.BeforeCatch = true;
     Expanded.BraceWrapping.BeforeElse = true;
+    Expanded.BraceWrapping.BeforeLambdaBody = true;
     break;
   case FormatStyle::BS_Whitesmiths:
     Expanded.BraceWrapping.AfterCaseLabel = true;



Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -13481,6 +13481,57 @@
                "#endif",
                AllmanBraceStyle);
 
+  EXPECT_EQ(AllmanBraceStyle.AllowShortLambdasOnASingleLine, FormatStyle::SLS_All);
+
+  verifyFormat("[](int i) { return i + 2; };\n"
+               "[](int i, int j)\n"
+               "{\n"
+               "  auto x = i + j;\n"
+               "  auto y = i * j;\n"
+               "  return x ^ y;\n"
+               "};\n"
+               "void foo()\n"
+               "{\n"
+               "  auto shortLambda = [](int i) { return i + 2; };\n"
+               "  auto longLambda = [](int i, int j)\n"
+               "  {\n"
+               "    auto x = i + j;\n"
+               "    auto y = i * j;\n"
+               "    return x ^ y;\n"
+               "  };\n"
+               "}",
+               AllmanBraceStyle);
+
+  AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
+
+  verifyFormat("[](int i)\n"
+               "{\n"
+               "  return i + 2;\n"
+               "};\n"
+               "[](int i, int j)\n"
+               "{\n"
+               "  auto x = i + j;\n"
+               "  auto y = i * j;\n"
+               "  return x ^ y;\n"
+               "};\n"
+               "void foo()\n"
+               "{\n"
+               "  auto shortLambda = [](int i)\n"
+               "  {\n"
+               "    return i + 2;\n"
+               "  };\n"
+               "  auto longLambda = [](int i, int j)\n"
+               "  {\n"
+               "    auto x = i + j;\n"
+               "    auto y = i * j;\n"
+               "    return x ^ y;\n"
+               "  };\n"
+               "}",
+               AllmanBraceStyle);
+
+  // Reset
+  AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_All;
+
   // This shouldn't affect ObjC blocks..
   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
                "  // ...\n"
Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -817,6 +817,7 @@
     Expanded.IndentExternBlock = FormatStyle::IEBS_AfterExternBlock;
     Expanded.BraceWrapping.BeforeCatch = true;
     Expanded.BraceWrapping.BeforeElse = true;
+    Expanded.BraceWrapping.BeforeLambdaBody = true;
     break;
   case FormatStyle::BS_Whitesmiths:
     Expanded.BraceWrapping.AfterCaseLabel = true;

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