[clang-tools-extra] [clang-tidy] Fixes to readability-implicit-bool-conversion (PR #72050)

[Congcong Cai via cfe-commits]

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@@ -173,16 +173,30 @@ StringRef getEquivalentBoolLiteralForExpr(const Expr *Expression,
   return {};
 }
 
+bool needsSpacePrefix(SourceLocation Loc, ASTContext &Context) {
+  SourceRange PrefixRange(Loc.getLocWithOffset(-1), Loc);
+  StringRef SpaceBeforeStmtStr = Lexer::getSourceText(
+      CharSourceRange::getCharRange(PrefixRange), Context.getSourceManager(),
+      Context.getLangOpts(), nullptr);
+  if (SpaceBeforeStmtStr.empty())
+    return true;
+
+  const StringRef AllowedCharacters(" \t\n\v\f\r(){}[]<>;,+=-|&~!^*/");
+  return SpaceBeforeStmtStr.rtrim(AllowedCharacters).size() ==
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HerrCai0907 wrote:

use `SpaceBeforeStmtStr.back()` and `SpaceBeforeStmtStr.front()`

https://github.com/llvm/llvm-project/pull/72050