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//===- unittests/AST/ASTDumperTest.cpp --- Test of AST node dump() methods ===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file contains tests for TypeLoc::dump() and related methods.
// Most of these are lit tests via clang -ast-dump. However some nodes are not
// included in dumps of (TranslationUnit)Decl, but still relevant when dumped
// directly.
//
//===----------------------------------------------------------------------===//
#include "ASTPrint.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/Testing/TestAST.h"
#include "llvm/ADT/StringRef.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using namespace clang;
using namespace ast_matchers;
namespace {
using testing::ElementsAre;
using testing::StartsWith;
std::vector<std::string> dumpTypeLoc(llvm::StringRef Name, ASTContext &Ctx) {
auto Lookup = Ctx.getTranslationUnitDecl()->lookup(&Ctx.Idents.get(Name));
DeclaratorDecl *D = nullptr;
if ((D = Lookup.find_first<DeclaratorDecl>()))
;
else if (auto *TD = Lookup.find_first<FunctionTemplateDecl>())
D = TD->getTemplatedDecl();
EXPECT_NE(D, nullptr) << Name;
if (!D)
return {};
EXPECT_NE(D->getTypeSourceInfo(), nullptr);
if (!D->getTypeSourceInfo())
return {};
std::string S;
{
llvm::raw_string_ostream OS(S);
D->getTypeSourceInfo()->getTypeLoc().dump(OS, Ctx);
}
// Split result into lines.
std::vector<std::string> Result;
auto Remaining = llvm::StringRef(S).trim("\n");
while (!Remaining.empty()) {
auto [First, Rest] = Remaining.split('\n');
Result.push_back(First.str());
Remaining = Rest;
}
return Result;
}
TEST(ASTDumper, TypeLocChain) {
TestAST AST(R"cc(
const int **x;
)cc");
EXPECT_THAT(
dumpTypeLoc("x", AST.context()),
ElementsAre(""
"PointerTypeLoc <input.mm:2:11, col:16> 'const int **'",
"`-PointerTypeLoc <col:11, col:15> 'const int *'",
" `-QualifiedTypeLoc <col:11> 'const int'",
" `-BuiltinTypeLoc <col:11> 'int'"));
}
TEST(ASTDumper, AutoType) {
TestInputs Inputs(R"cc(
template <class, class> concept C = true;
C<int> auto str1 = "hello";
auto str2 = "hello";
)cc");
Inputs.ExtraArgs.push_back("-std=c++20");
TestAST AST(Inputs);
EXPECT_THAT(
dumpTypeLoc("str1", AST.context()),
ElementsAre(""
"AutoTypeLoc <input.mm:3:5, col:12> 'C<int> auto' undeduced",
StartsWith("|-Concept"), //
"`-TemplateArgument <col:7> type 'int'",
StartsWith(" `-BuiltinType")));
EXPECT_THAT(dumpTypeLoc("str2", AST.context()),
ElementsAre(""
"AutoTypeLoc <input.mm:4:5> 'auto' undeduced"));
}
TEST(ASTDumper, FunctionTypeLoc) {
TestAST AST(R"cc(
void x(int, double *y);
auto trailing() -> int;
template <class T> int tmpl(T&&);
)cc");
EXPECT_THAT(
dumpTypeLoc("x", AST.context()),
ElementsAre(""
"FunctionProtoTypeLoc <input.mm:2:5, col:26> 'void (int, "
"double *)' cdecl",
StartsWith("|-ParmVarDecl"),
"| `-BuiltinTypeLoc <col:12> 'int'",
StartsWith("|-ParmVarDecl"),
"| `-PointerTypeLoc <col:17, col:24> 'double *'",
"| `-BuiltinTypeLoc <col:17> 'double'",
"`-BuiltinTypeLoc <col:5> 'void'"));
EXPECT_THAT(dumpTypeLoc("trailing", AST.context()),
ElementsAre(""
"FunctionProtoTypeLoc <input.mm:4:5, col:24> "
"'auto () -> int' trailing_return cdecl",
"`-BuiltinTypeLoc <col:24> 'int'"));
EXPECT_THAT(
dumpTypeLoc("tmpl", AST.context()),
ElementsAre(""
"FunctionProtoTypeLoc <input.mm:6:24, col:36> "
"'int (T &&)' cdecl",
StartsWith("|-ParmVarDecl"),
"| `-RValueReferenceTypeLoc <col:33, col:34> 'T &&'",
"| `-TemplateTypeParmTypeLoc <col:33> 'T' depth 0 index 0",
StartsWith("| `-TemplateTypeParm"),
"`-BuiltinTypeLoc <col:24> 'int'"));
// Dynamic-exception-spec needs C++14 or earlier.
TestInputs Throws(R"cc(
void throws() throw(int);
)cc");
Throws.ExtraArgs.push_back("-std=c++14");
AST = TestAST(Throws);
EXPECT_THAT(dumpTypeLoc("throws", AST.context()),
ElementsAre(""
"FunctionProtoTypeLoc <input.mm:2:5, col:28> "
"'void () throw(int)' exceptionspec_dynamic cdecl",
// FIXME: include TypeLoc for int
"|-Exceptions: 'int'",
"`-BuiltinTypeLoc <col:5> 'void'"));
}
} // namespace
|
