From 015bca3e67cbb88f74f01fb5ae4e46392bec6416 Mon Sep 17 00:00:00 2001
From: Jonathan Coe <jbcoe@google.com>
Date: Tue, 28 Apr 2020 17:35:33 +0100
Subject: [PATCH] [clang-format] C# property formatting can be controlled by
 config options

Summary:
Allow brace wrapping in C# property accessors to be controlled by configuration options.

Add new tests and revert old test results for MS style to their old state (as intended).

`FormatStyle.BraceWrapping.AfterFunction = true;` will change automatic property formatting from

```
Type MyType { get; set }
```

to

```
Type MyType
{ get; set }
```

Reviewers: krasimir, MyDeveloperDay

Subscribers: cfe-commits

Tags: #clang-format, #clang

Differential Revision: https://reviews.llvm.org/D79000
---
 clang/lib/Format/UnwrappedLineParser.cpp    |  2 ++
 clang/unittests/Format/FormatTestCSharp.cpp | 32 +++++++++++++++++++++++++++--
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index 4734ff1..e9e56e8 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -1531,6 +1531,8 @@ bool UnwrappedLineParser::tryToParsePropertyAccessor() {
   // Try to parse the property accessor:
   // https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/properties
   Tokens->setPosition(StoredPosition);
+  if (Style.BraceWrapping.AfterFunction == true)
+    addUnwrappedLine();
   nextToken();
   do {
     switch (FormatTok->Tok.getKind()) {
diff --git a/clang/unittests/Format/FormatTestCSharp.cpp b/clang/unittests/Format/FormatTestCSharp.cpp
index 91962ef..550f5b4 100644
--- a/clang/unittests/Format/FormatTestCSharp.cpp
+++ b/clang/unittests/Format/FormatTestCSharp.cpp
@@ -245,11 +245,13 @@ TEST_F(FormatTestCSharp, Attributes) {
                "}");
 
   verifyFormat("[TestMethod]\n"
-               "public string Host { set; get; }");
+               "public string Host\n"
+               "{ set; get; }");
 
   verifyFormat("[TestMethod(\"start\", HelpText = \"Starts the server "
                "listening on provided host\")]\n"
-               "public string Host { set; get; }");
+               "public string Host\n"
+               "{ set; get; }");
 
   verifyFormat(
       "[DllImport(\"Hello\", EntryPoint = \"hello_world\")]\n"
@@ -671,6 +673,32 @@ class MyClass {
                                      DefaultThirdArgument);
 })",
                Style);
+
+  // Brace wrapping and single-lining of accessor can be controlled by config.
+  Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
+  Style.BreakBeforeBraces = FormatStyle::BS_Custom;
+  Style.BraceWrapping.AfterFunction = true;
+
+  verifyFormat(R"(//
+public class SaleItem {
+  public decimal Price
+  { get; set; }
+})",
+               Style);
+
+  verifyFormat(R"(//
+class TimePeriod {
+  public double Hours
+  {
+    get {
+      return _seconds / 3600;
+    }
+    set {
+      _seconds = value * 3600;
+    }
+  }
+})",
+               Style);
 }
 
 TEST_F(FormatTestCSharp, CSharpSpaces) {
-- 
2.7.4