1 //===- unittest/Tooling/CastExprTest.cpp ----------------------------------===//
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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "TestVisitor.h"
10 
11 using namespace clang;
12 
13 namespace {
14 
15 struct CastExprVisitor : TestVisitor<CastExprVisitor> {
16   std::function<void(ExplicitCastExpr *)> OnExplicitCast;
17 
VisitExplicitCastExpr__anonbac6087b0111::CastExprVisitor18   bool VisitExplicitCastExpr(ExplicitCastExpr *Expr) {
19     if (OnExplicitCast)
20       OnExplicitCast(Expr);
21     return true;
22   }
23 };
24 
TEST(CastExprTest,GetSubExprAsWrittenThroughMaterializedTemporary)25 TEST(CastExprTest, GetSubExprAsWrittenThroughMaterializedTemporary) {
26     CastExprVisitor Visitor;
27     Visitor.OnExplicitCast = [](ExplicitCastExpr *Expr) {
28       auto Sub = Expr->getSubExprAsWritten();
29       EXPECT_TRUE(isa<DeclRefExpr>(Sub))
30         << "Expected DeclRefExpr, but saw " << Sub->getStmtClassName();
31     };
32     Visitor.runOver("struct S1 {};\n"
33                     "struct S2 { operator S1(); };\n"
34                     "S1 f(S2 s) { return static_cast<S1>(s); }\n");
35 }
36 
37 }
38