[clang] [clang-format[NFC] Replace a function with StringRef::contains (PR #146245)

[Owen Pan via cfe-commits]

https://github.com/owenca created https://github.com/llvm/llvm-project/pull/146245

None

>From 60a0768fef885cb87e564f6dba7e101befd6ab0d Mon Sep 17 00:00:00 2001
From: Owen Pan <owenpiano at gmail.com>
Date: Sat, 28 Jun 2025 15:52:58 -0700
Subject: [PATCH] [clang-format[NFC] Replace a function with
 StringRef::contains

---
 clang/lib/Format/BreakableToken.cpp | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/clang/lib/Format/BreakableToken.cpp b/clang/lib/Format/BreakableToken.cpp
index def0d73e77539..24912c25ef8c6 100644
--- a/clang/lib/Format/BreakableToken.cpp
+++ b/clang/lib/Format/BreakableToken.cpp
@@ -26,18 +26,6 @@ namespace clang {
 namespace format {
 
 static constexpr StringRef Blanks = " \t\v\f\r";
-static bool IsBlank(char C) {
-  switch (C) {
-  case ' ':
-  case '\t':
-  case '\v':
-  case '\f':
-  case '\r':
-    return true;
-  default:
-    return false;
-  }
-}
 
 static StringRef getLineCommentIndentPrefix(StringRef Comment,
                                             const FormatStyle &Style) {
@@ -193,7 +181,7 @@ getStringSplit(StringRef Text, unsigned UsedColumns, unsigned ColumnLimit,
     if (Chars > MaxSplit || Text.size() <= Advance)
       break;
 
-    if (IsBlank(Text[0]))
+    if (Blanks.contains(Text[0]))
       SpaceOffset = SplitPoint;
     if (Text[0] == '/')
       SlashOffset = SplitPoint;