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//===-- ASTTests.cpp --------------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#include "AST.h"
#include "Annotations.h"
#include "ParsedAST.h"
#include "TestTU.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Casting.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <cstddef>
#include <string>
#include <vector>
namespace clang {
namespace clangd {
namespace {
TEST(GetDeducedType, KwAutoExpansion) {
struct Test {
StringRef AnnotatedCode;
const char *DeducedType;
} Tests[] = {
{"^auto i = 0;", "int"},
{"^auto f(){ return 1;};", "int"},
};
for (Test T : Tests) {
Annotations File(T.AnnotatedCode);
auto AST = TestTU::withCode(File.code()).build();
SourceManagerForFile SM("foo.cpp", File.code());
for (Position Pos : File.points()) {
auto Location = sourceLocationInMainFile(SM.get(), Pos);
ASSERT_TRUE(!!Location) << llvm::toString(Location.takeError());
auto DeducedType = getDeducedType(AST.getASTContext(), *Location);
EXPECT_EQ(DeducedType->getAsString(), T.DeducedType);
}
}
}
TEST(ClangdAST, GetQualification) {
// Tries to insert the decl `Foo` into position of each decl named `insert`.
// This is done to get an appropriate DeclContext for the insertion location.
// Qualifications are the required nested name specifier to spell `Foo` at the
// `insert`ion location.
// VisibleNamespaces are assumed to be visible at every insertion location.
const struct {
llvm::StringRef Test;
std::vector<llvm::StringRef> Qualifications;
std::vector<std::string> VisibleNamespaces;
} Cases[] = {
{
R"cpp(
namespace ns1 { namespace ns2 { class Foo {}; } }
void insert(); // ns1::ns2::Foo
namespace ns1 {
void insert(); // ns2::Foo
namespace ns2 {
void insert(); // Foo
}
using namespace ns2;
void insert(); // Foo
}
using namespace ns1;
void insert(); // ns2::Foo
using namespace ns2;
void insert(); // Foo
)cpp",
{"ns1::ns2::", "ns2::", "", "", "ns2::", ""},
{},
},
{
R"cpp(
namespace ns1 { namespace ns2 { class Bar { void Foo(); }; } }
void insert(); // ns1::ns2::Bar::Foo
namespace ns1 {
void insert(); // ns2::Bar::Foo
namespace ns2 {
void insert(); // Bar::Foo
}
using namespace ns2;
void insert(); // Bar::Foo
}
using namespace ns1;
void insert(); // ns2::Bar::Foo
using namespace ns2;
void insert(); // Bar::Foo
)cpp",
{"ns1::ns2::Bar::", "ns2::Bar::", "Bar::", "Bar::", "ns2::Bar::",
"Bar::"},
{},
},
{
R"cpp(
namespace ns1 { namespace ns2 { void Foo(); } }
void insert(); // ns2::Foo
namespace ns1 {
void insert(); // ns2::Foo
namespace ns2 {
void insert(); // Foo
}
}
)cpp",
{"ns2::", "ns2::", ""},
{"ns1::"},
},
};
for (const auto &Case : Cases) {
Annotations Test(Case.Test);
TestTU TU = TestTU::withCode(Test.code());
ParsedAST AST = TU.build();
std::vector<const Decl *> InsertionPoints;
const NamedDecl *TargetDecl;
findDecl(AST, [&](const NamedDecl &ND) {
if (ND.getNameAsString() == "Foo") {
TargetDecl = &ND;
return true;
}
if (ND.getNameAsString() == "insert")
InsertionPoints.push_back(&ND);
return false;
});
ASSERT_EQ(InsertionPoints.size(), Case.Qualifications.size());
for (size_t I = 0, E = InsertionPoints.size(); I != E; ++I) {
const Decl *D = InsertionPoints[I];
if (Case.VisibleNamespaces.empty()) {
EXPECT_EQ(getQualification(AST.getASTContext(),
D->getLexicalDeclContext(), D->getBeginLoc(),
TargetDecl),
Case.Qualifications[I]);
} else {
EXPECT_EQ(getQualification(AST.getASTContext(),
D->getLexicalDeclContext(), TargetDecl,
Case.VisibleNamespaces),
Case.Qualifications[I]);
}
}
}
}
TEST(ClangdAST, PrintType) {
const struct {
llvm::StringRef Test;
std::vector<llvm::StringRef> Types;
} Cases[] = {
{
R"cpp(
namespace ns1 { namespace ns2 { class Foo {}; } }
void insert(); // ns1::ns2::Foo
namespace ns1 {
void insert(); // ns2::Foo
namespace ns2 {
void insert(); // Foo
}
}
)cpp",
{"ns1::ns2::Foo", "ns2::Foo", "Foo"},
},
{
R"cpp(
namespace ns1 {
typedef int Foo;
}
void insert(); // ns1::Foo
namespace ns1 {
void insert(); // Foo
}
)cpp",
{"ns1::Foo", "Foo"},
},
};
for (const auto &Case : Cases) {
Annotations Test(Case.Test);
TestTU TU = TestTU::withCode(Test.code());
ParsedAST AST = TU.build();
std::vector<const DeclContext *> InsertionPoints;
const TypeDecl *TargetDecl = nullptr;
findDecl(AST, [&](const NamedDecl &ND) {
if (ND.getNameAsString() == "Foo") {
if (const auto *TD = llvm::dyn_cast<TypeDecl>(&ND)) {
TargetDecl = TD;
return true;
}
} else if (ND.getNameAsString() == "insert")
InsertionPoints.push_back(ND.getDeclContext());
return false;
});
ASSERT_EQ(InsertionPoints.size(), Case.Types.size());
for (size_t I = 0, E = InsertionPoints.size(); I != E; ++I) {
const auto *DC = InsertionPoints[I];
EXPECT_EQ(printType(AST.getASTContext().getTypeDeclType(TargetDecl), *DC),
Case.Types[I]);
}
}
}
} // namespace
} // namespace clangd
} // namespace clang
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