llvm-project/clang-tools-extra/clangd/unittests/PrintASTTests.cpp

110 lines
4.6 KiB
C++

//===--- PrintASTTests.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 "Protocol.h"
#include "SourceCode.h"
#include "TestTU.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace clangd {
namespace {
using ::testing::ElementsAreArray;
struct Case {
const char *AnnotatedCode;
std::vector<const char *> Expected;
};
class ASTUtils : public ::testing::Test,
public ::testing::WithParamInterface<Case> {};
TEST_P(ASTUtils, PrintTemplateArgs) {
auto Pair = GetParam();
Annotations Test(Pair.AnnotatedCode);
auto AST = TestTU::withCode(Test.code()).build();
struct Visitor : RecursiveASTVisitor<Visitor> {
Visitor(std::vector<Position> Points) : Points(std::move(Points)) {}
bool VisitNamedDecl(const NamedDecl *ND) {
if (TemplateArgsAtPoints.size() == Points.size())
return true;
auto Pos = sourceLocToPosition(ND->getASTContext().getSourceManager(),
ND->getLocation());
if (Pos != Points[TemplateArgsAtPoints.size()])
return true;
TemplateArgsAtPoints.push_back(printTemplateSpecializationArgs(*ND));
return true;
}
std::vector<std::string> TemplateArgsAtPoints;
const std::vector<Position> Points;
};
Visitor V(Test.points());
V.TraverseDecl(AST.getASTContext().getTranslationUnitDecl());
EXPECT_THAT(V.TemplateArgsAtPoints, ElementsAreArray(Pair.Expected));
}
INSTANTIATE_TEST_SUITE_P(ASTUtilsTests, ASTUtils,
::testing::ValuesIn(std::vector<Case>({
{
R"cpp(
template <class X> class Bar {};
template <> class ^Bar<double> {};)cpp",
{"<double>"}},
{
R"cpp(
template <class X> class Bar {};
template <class T, class U,
template<typename> class Z, int Q>
struct Foo {};
template struct ^Foo<int, bool, Bar, 8>;
template <typename T>
struct ^Foo<T *, T, Bar, 3> {};)cpp",
{"<int, bool, Bar, 8>", "<T *, T, Bar, 3>"}},
{
R"cpp(
template <int ...> void Foz() {};
template <> void ^Foz<3, 5, 8>() {};)cpp",
{"<3, 5, 8>"}},
{
R"cpp(
template <class X> class Bar {};
template <template <class> class ...>
class Aux {};
template <> class ^Aux<Bar, Bar> {};
template <template <class> class T>
class ^Aux<T, T> {};)cpp",
{"<Bar, Bar>", "<T, T>"}},
{
R"cpp(
template <typename T> T var = 1234;
template <> int ^var<int> = 1;)cpp",
{"<int>"}},
{
R"cpp(
template <typename T> struct Foo;
struct Bar { friend class Foo<int>; };
template <> struct ^Foo<int> {};)cpp",
{"<int>"}},
{
R"cpp(
template<class T>
T S = T(10);
template <class T>
int ^S<T*> = 0;
template <>
int ^S<double> = 0;)cpp",
{"<T *>", "<double>"}},
})));
} // namespace
} // namespace clangd
} // namespace clang