[clang] [clang-format] Treat new expressions as simple functions (PR #105168)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-format

Author: kadir çetinkaya (kadircet)

<details>
<summary>Changes</summary>

ccae7b461be339e717d02f99ac857cf0bc7d17f improved handling for nested
calls, but this resulted in a lot of changes near `new` expressions.

This patch tries to restore previous behavior around new expressions, by
treating them as simple functions, which seem to align with the concept.

Fixes https://github.com/llvm/llvm-project/issues/105133.


---
Full diff: https://github.com/llvm/llvm-project/pull/105168.diff


2 Files Affected:

- (modified) clang/lib/Format/ContinuationIndenter.cpp (+2) 
- (modified) clang/unittests/Format/FormatTest.cpp (+4) 


``````````diff
diff --git a/clang/lib/Format/ContinuationIndenter.cpp b/clang/lib/Format/ContinuationIndenter.cpp
index 46dafad65863dc..8f65a1445dc3a5 100644
--- a/clang/lib/Format/ContinuationIndenter.cpp
+++ b/clang/lib/Format/ContinuationIndenter.cpp
@@ -848,6 +848,8 @@ void ContinuationIndenter::addTokenOnCurrentLine(LineState &State, bool DryRun,
   const auto IsSimpleFunction = [&](const FormatToken &Tok) {
     if (!Tok.FakeLParens.empty() && Tok.FakeLParens.back() > prec::Unknown)
       return false;
+    if (Tok.is(tok::kw_new))
+      return true;
     const auto *Previous = Tok.Previous;
     if (!Previous || (!Previous->isOneOf(TT_FunctionDeclarationLParen,
                                          TT_LambdaDefinitionLParen) &&
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 794ccab3704534..bdaacd065a45d1 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -9292,6 +9292,10 @@ TEST_F(FormatTest, AlignsAfterOpenBracket) {
       "        aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)) &&\n"
       "    aaaaaaaaaaaaaaaa);",
       Style);
+  verifyFormat(
+      "fooooooooooo(new BARRRRRRRRR(\n"
+      "    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXZZZZZZZZZZZZZZZZZZZZZZZZZ()));",
+      Style);
 
   Style.AlignAfterOpenBracket = FormatStyle::BAS_BlockIndent;
   Style.BinPackArguments = false;

``````````

</details>


https://github.com/llvm/llvm-project/pull/105168