60 lines · cpp
1//===- unittests/AST/DeclBaseTest.cpp --- Declaration tests----------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// Unit tests for Decl class in the AST.10//11//===----------------------------------------------------------------------===//12 13#include "clang/AST/DeclBase.h"14#include "clang/AST/ASTContext.h"15#include "clang/AST/DeclCXX.h"16#include "clang/AST/Type.h"17#include "clang/ASTMatchers/ASTMatchFinder.h"18#include "clang/ASTMatchers/ASTMatchers.h"19#include "clang/Basic/LLVM.h"20#include "clang/Tooling/Tooling.h"21#include "gtest/gtest.h"22 23using ::clang::BindingDecl;24using ::clang::ast_matchers::bindingDecl;25using ::clang::ast_matchers::hasName;26using ::clang::ast_matchers::match;27using ::clang::ast_matchers::selectFirst;28 29TEST(DeclGetFunctionType, BindingDecl) {30 llvm::StringRef Code = R"cpp(31 template <typename A, typename B>32 struct Pair {33 A AnA;34 B AB;35 };36 37 void target(int *i) {38 Pair<void (*)(int *), bool> P;39 auto [FunctionPointer, B] = P;40 FunctionPointer(i);41 }42 )cpp";43 44 auto AST =45 clang::tooling::buildASTFromCodeWithArgs(Code, /*Args=*/{"-std=c++20"});46 clang::ASTContext &Ctx = AST->getASTContext();47 48 auto *BD = selectFirst<clang::BindingDecl>(49 "FunctionPointer",50 match(bindingDecl(hasName("FunctionPointer")).bind("FunctionPointer"),51 Ctx));52 ASSERT_NE(BD, nullptr);53 54 EXPECT_NE(BD->getFunctionType(), nullptr);55 56 // Emulate a call before the BindingDecl has a bound type.57 const_cast<clang::BindingDecl *>(BD)->setBinding(clang::QualType(), nullptr);58 EXPECT_EQ(BD->getFunctionType(), nullptr);59}60