================
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "ReplaceWithStringViewCheck.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang::tidy::performance {
+
+static llvm::StringLiteral toStringViewTypeStr(StringRef Type) {
+ if (Type.contains("wchar_t"))
+ return "std::wstring_view";
+ if (Type.contains("wchar_t"))
+ return "std::wstring_view";
+ if (Type.contains("char8_t"))
+ return "std::u8string_view";
+ if (Type.contains("char16_t"))
+ return "std::u16string_view";
+ if (Type.contains("char32_t"))
+ return "std::u32string_view";
+ return "std::string_view";
+}
+
+void ReplaceWithStringViewCheck::registerMatchers(MatchFinder *Finder) {
+ const auto IsStdString = hasCanonicalType(
+ hasDeclaration(cxxRecordDecl(hasName("::std::basic_string"))));
+ const auto IsStdStringView = expr(hasType(hasCanonicalType(
+ hasDeclaration(cxxRecordDecl(hasName("::std::basic_string_view"))))));
+
+ Finder->addMatcher(
+ functionDecl(
+ isDefinition(),
+ unless(cxxMethodDecl(anyOf(isOverride(), isVirtual()))),
+ returns(IsStdString), hasDescendant(returnStmt()),
----------------
vbvictor wrote:
What if we have
```
std::string foo() {
[]() {
return "42"; // match?
}
}
```
https://github.com/llvm/llvm-project/pull/172170
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