bogser01 updated this revision to Diff 295553.
bogser01 added a comment.
Fixed failing unit test
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D88314/new/
https://reviews.llvm.org/D88314
Files:
clang-tools-extra/clang-tidy/llvm/CMakeLists.txt
clang-tools-extra/clang-tidy/llvm/LLVMTidyModule.cpp
clang-tools-extra/clang-tidy/llvm/StringReferencingCheck.cpp
clang-tools-extra/clang-tidy/llvm/StringReferencingCheck.h
clang-tools-extra/docs/clang-tidy/checks/list.rst
clang-tools-extra/docs/clang-tidy/checks/llvm-string-referencing.rst
clang-tools-extra/test/clang-tidy/checkers/llvm-string-referencing.cpp
Index: clang-tools-extra/test/clang-tidy/checkers/llvm-string-referencing.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/llvm-string-referencing.cpp
@@ -0,0 +1,66 @@
+// RUN: %check_clang_tidy %s llvm-string-referencing %t
+
+namespace std {
+class string {};
+class u18_string_t;
+
+} // namespace std
+
+namespace llvm {
+class StringRef;
+} // namespace llvm
+
+class String;
+
+namespace A {
+using namespace std;
+void f(const string &P);
+// CHECK-MESSAGES: :[[@LINE-1]]:10: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+// CHECK-FIXES: void f(llvm::StringRef P);{{$}}
+} // namespace A
+
+namespace B {
+using std::string;
+void f1(const string &P);
+// CHECK-MESSAGES: :[[@LINE-1]]:11: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+// CHECK-FIXES: void f1(llvm::StringRef P);{{$}}
+} // namespace B
+
+void f2(std::string, int, const std::string &);
+// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+// CHECK-FIXES: void f2(std::string, int, llvm::StringRef );{{$}}
+void f2(std::string P, int x, const std::string &P2) {
+ // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+ // CHECK-FIXES: void f2(std::string P, int x, llvm::StringRef P2) {{{$}}
+ return;
+}
+
+void f3(const std::string &P1, const std::string &P2);
+// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+// CHECK-MESSAGES: :[[@LINE-2]]:32: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+// CHECK-FIXES: void f3(llvm::StringRef P1, llvm::StringRef P2);{{$}}
+
+struct St {
+ void operator=(const std::string &Val) const {
+ // CHECK-MESSAGES: :[[@LINE-1]]:18: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+ // CHECK-FIXES: void operator=(llvm::StringRef Val) const {{{$}}
+ return;
+ }
+};
+
+void f7(const std::string &);
+// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: Use of const std::string & is discouraged in the LLVM Programmer's Manual [llvm-string-referencing]
+// CHECK-FIXES: void f7(llvm::StringRef );{{$}}
+
+// Functions below this line should not trigger the check
+void f1(std::string &P);
+
+void f4(std::string *P);
+
+void f5(String &P);
+
+void f6(llvm::StringRef P);
+
+void f9(std::u18_string_t &P);
+
+void f10(const std::string &&P);
Index: clang-tools-extra/docs/clang-tidy/checks/llvm-string-referencing.rst
===================================================================
--- /dev/null
+++ clang-tools-extra/docs/clang-tidy/checks/llvm-string-referencing.rst
@@ -0,0 +1,6 @@
+.. title:: clang-tidy - llvm-string-referencing
+
+llvm-string-referencing
+=======================
+
+FIXME: Describe what patterns does the check detect and why. Give examples.
Index: clang-tools-extra/docs/clang-tidy/checks/list.rst
===================================================================
--- clang-tools-extra/docs/clang-tidy/checks/list.rst
+++ clang-tools-extra/docs/clang-tidy/checks/list.rst
@@ -192,6 +192,7 @@
`llvm-namespace-comment <llvm-namespace-comment.html>`_,
`llvm-prefer-isa-or-dyn-cast-in-conditionals <llvm-prefer-isa-or-dyn-cast-in-conditionals.html>`_, "Yes"
`llvm-prefer-register-over-unsigned <llvm-prefer-register-over-unsigned.html>`_, "Yes"
+ `llvm-string-referencing <llvm-string-referencing.html>`_, "Yes"
`llvm-twine-local <llvm-twine-local.html>`_, "Yes"
`llvmlibc-callee-namespace <llvmlibc-callee-namespace.html>`_,
`llvmlibc-implementation-in-namespace <llvmlibc-implementation-in-namespace.html>`_,
Index: clang-tools-extra/clang-tidy/llvm/StringReferencingCheck.h
===================================================================
--- /dev/null
+++ clang-tools-extra/clang-tidy/llvm/StringReferencingCheck.h
@@ -0,0 +1,46 @@
+//===--- StringReferencingCheck.h - clang-tidy ------------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_STRINGREFERENCINGCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_STRINGREFERENCINGCHECK_H
+
+#include "../ClangTidyCheck.h"
+#include "../utils/IncludeInserter.h"
+#include "clang/Frontend/CompilerInstance.h"
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+/// LThe LLVM Programmer's Manual recommends that llvm::StringRef should be
+/// used for function parameters instead of references to const std::string:
+/// https://llvm.org/docs/ProgrammersManual.html#the-stringref-class
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/llvm-string-referencing.html
+class StringReferencingCheck : public ClangTidyCheck {
+ const llvm::StringRef BoundNodeId = "string_reference";
+
+public:
+ StringReferencingCheck(StringRef Name, ClangTidyContext *Context)
+ : ClangTidyCheck(Name, Context),
+ Inserter(Options.getLocalOrGlobal("IncludeStyle",
+ utils::IncludeSorter::IS_LLVM)) {}
+ void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+ void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
+ Preprocessor *ModuleExpanderPP) override;
+ void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+
+private:
+ utils::IncludeInserter Inserter;
+};
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_LLVM_STRINGREFERENCINGCHECK_H
Index: clang-tools-extra/clang-tidy/llvm/StringReferencingCheck.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/clang-tidy/llvm/StringReferencingCheck.cpp
@@ -0,0 +1,63 @@
+//===--- StringReferencingCheck.cpp - clang-tidy --------------------------===//
+//
+// 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 "StringReferencingCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include "clang/Basic/SourceLocation.h"
+#include "clang/Basic/SourceManager.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace llvm_check {
+
+void StringReferencingCheck::registerMatchers(MatchFinder *Finder) {
+ // create a matcher looking for const std::string& parameters
+ auto Matcher =
+ parmVarDecl(hasType(references(namedDecl(
+ hasName("string"), isInStdNamespace()))), // std::string&
+ hasType(references(qualType(isConstQualified()))), // const
+ hasType(lValueReferenceType()) // don't match std::string&&
+ );
+ // Add matcher to the finder and bound matched nodes
+ Finder->addMatcher(Matcher.bind(BoundNodeId), this);
+}
+
+void StringReferencingCheck::registerPPCallbacks(
+ const SourceManager &SM, Preprocessor *PP, Preprocessor *ModuleExpanderPP) {
+ Inserter.registerPreprocessor(PP);
+}
+
+void StringReferencingCheck::check(const MatchFinder::MatchResult &Result) {
+ // Retrieve parameters found by matcher
+ const auto *ParamDecl = Result.Nodes.getNodeAs<ParmVarDecl>(BoundNodeId);
+ // Extract parameter type location in source
+ clang::SourceRange TypeRange;
+ auto ParamBegin = ParamDecl->getBeginLoc();
+ if (!ParamBegin.isValid())
+ return;
+ TypeRange.setBegin(ParamBegin);
+ TypeRange.setEnd(ParamDecl->getTypeSpecEndLoc());
+ // Generate diagnostics and fix
+ diag(ParamBegin, "Use of const std::string & is discouraged in the LLVM "
+ "Programmer's Manual");
+ diag(ParamBegin, "replace parameter %0 type with llvm::StringRef",
+ DiagnosticIDs::Note)
+ << ParamDecl
+ << FixItHint::CreateReplacement(TypeRange, "llvm::StringRef ")
+ << Inserter.createMainFileIncludeInsertion(
+ "llvm/include/llvm/ADT/StringRef.h",
+ /*IsAngled=*/false);
+}
+
+} // namespace llvm_check
+} // namespace tidy
+} // namespace clang
Index: clang-tools-extra/clang-tidy/llvm/LLVMTidyModule.cpp
===================================================================
--- clang-tools-extra/clang-tidy/llvm/LLVMTidyModule.cpp
+++ clang-tools-extra/clang-tidy/llvm/LLVMTidyModule.cpp
@@ -16,6 +16,7 @@
#include "IncludeOrderCheck.h"
#include "PreferIsaOrDynCastInConditionalsCheck.h"
#include "PreferRegisterOverUnsignedCheck.h"
+#include "StringReferencingCheck.h"
#include "TwineLocalCheck.h"
namespace clang {
@@ -37,6 +38,8 @@
"llvm-prefer-register-over-unsigned");
CheckFactories.registerCheck<readability::QualifiedAutoCheck>(
"llvm-qualified-auto");
+ CheckFactories.registerCheck<StringReferencingCheck>(
+ "llvm-string-referencing");
CheckFactories.registerCheck<TwineLocalCheck>("llvm-twine-local");
}
Index: clang-tools-extra/clang-tidy/llvm/CMakeLists.txt
===================================================================
--- clang-tools-extra/clang-tidy/llvm/CMakeLists.txt
+++ clang-tools-extra/clang-tidy/llvm/CMakeLists.txt
@@ -9,6 +9,7 @@
LLVMTidyModule.cpp
PreferIsaOrDynCastInConditionalsCheck.cpp
PreferRegisterOverUnsignedCheck.cpp
+ StringReferencingCheck.cpp
TwineLocalCheck.cpp
LINK_LIBS
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