114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
//===---- UsingInserterTest.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 "../clang-tidy/utils/UsingInserter.h"
|
|
|
|
#include "ClangTidyTest.h"
|
|
#include "clang/ASTMatchers/ASTMatchFinder.h"
|
|
#include "clang/ASTMatchers/ASTMatchers.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
namespace clang {
|
|
namespace tidy {
|
|
namespace utils {
|
|
|
|
// Replace all function calls with calls to foo::func. Inserts using
|
|
// declarations as necessary. This checker is for testing only. It
|
|
// can only run on one test case (e.g. wih one SourceManager).
|
|
class InsertUsingCheck : public clang::tidy::ClangTidyCheck {
|
|
public:
|
|
InsertUsingCheck(StringRef Name, ClangTidyContext *Context)
|
|
:ClangTidyCheck(Name, Context) {}
|
|
void registerMatchers(clang::ast_matchers::MatchFinder *Finder) override {
|
|
Finder->addMatcher(clang::ast_matchers::callExpr().bind("foo"), this);
|
|
}
|
|
void
|
|
check(const clang::ast_matchers::MatchFinder::MatchResult &Result) override {
|
|
if (!Inserter)
|
|
Inserter.reset(new UsingInserter(*Result.SourceManager));
|
|
|
|
const auto *Call = Result.Nodes.getNodeAs<clang::CallExpr>("foo");
|
|
assert(Call != nullptr && "Did not find node \"foo\"");
|
|
auto Hint =
|
|
Inserter->createUsingDeclaration(*Result.Context, *Call, "::foo::func");
|
|
|
|
if (Hint.hasValue())
|
|
diag(Call->getBeginLoc(), "Fix for testing") << Hint.getValue();
|
|
|
|
diag(Call->getBeginLoc(), "insert call")
|
|
<< clang::FixItHint::CreateReplacement(
|
|
Call->getCallee()->getSourceRange(),
|
|
Inserter->getShortName(*Result.Context, *Call, "::foo::func"));
|
|
}
|
|
|
|
private:
|
|
std::unique_ptr<UsingInserter> Inserter;
|
|
};
|
|
|
|
template <typename Check>
|
|
std::string runChecker(StringRef Code, unsigned ExpectedWarningCount) {
|
|
std::map<StringRef, StringRef> AdditionalFileContents = {{"foo.h",
|
|
"namespace foo {\n"
|
|
"namespace bar {\n"
|
|
"}\n"
|
|
"void func() { }\n"
|
|
"}"}};
|
|
std::vector<ClangTidyError> errors;
|
|
|
|
std::string result =
|
|
test::runCheckOnCode<Check>(Code, &errors, "foo.cc", None,
|
|
ClangTidyOptions(), AdditionalFileContents);
|
|
|
|
EXPECT_EQ(ExpectedWarningCount, errors.size());
|
|
return result;
|
|
}
|
|
|
|
TEST(UsingInserterTest, ReusesExisting) {
|
|
EXPECT_EQ("#include \"foo.h\"\n"
|
|
"namespace {"
|
|
"using ::foo::func;\n"
|
|
"void f() { func(); }"
|
|
"}",
|
|
runChecker<InsertUsingCheck>("#include \"foo.h\"\n"
|
|
"namespace {"
|
|
"using ::foo::func;\n"
|
|
"void f() { f(); }"
|
|
"}",
|
|
1));
|
|
}
|
|
|
|
TEST(UsingInserterTest, ReusesExistingGlobal) {
|
|
EXPECT_EQ("#include \"foo.h\"\n"
|
|
"using ::foo::func;\n"
|
|
"namespace {"
|
|
"void f() { func(); }"
|
|
"}",
|
|
runChecker<InsertUsingCheck>("#include \"foo.h\"\n"
|
|
"using ::foo::func;\n"
|
|
"namespace {"
|
|
"void f() { f(); }"
|
|
"}",
|
|
1));
|
|
}
|
|
|
|
TEST(UsingInserterTest, AvoidsConflict) {
|
|
EXPECT_EQ("#include \"foo.h\"\n"
|
|
"namespace {"
|
|
"void f() { int func; ::foo::func(); }"
|
|
"}",
|
|
runChecker<InsertUsingCheck>("#include \"foo.h\"\n"
|
|
"namespace {"
|
|
"void f() { int func; f(); }"
|
|
"}",
|
|
1));
|
|
}
|
|
|
|
} // namespace utils
|
|
} // namespace tidy
|
|
} // namespace clang
|