clang/unittests/Tooling/RecursiveASTVisitorTests/CXXOperatorCallExprTraverser.cpp

   1 //===- unittest/Tooling/RecursiveASTVisitorTests/CXXOperatorCallExprTraverser.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 class CXXOperatorCallExprTraverser
  16   : public ExpectedLocationVisitor<CXXOperatorCallExprTraverser> {
  17 public:
  18   // Use Traverse, not Visit, to check that data recursion optimization isn't
  19   // bypassing the call of this function.
  20   bool TraverseCXXOperatorCallExpr(CXXOperatorCallExpr *CE) {
  21     Match(getOperatorSpelling(CE->getOperator()), CE->getExprLoc());
  22     return ExpectedLocationVisitor<CXXOperatorCallExprTraverser>::
  23         TraverseCXXOperatorCallExpr(CE);
  24   }
  25 };
  26
  27 TEST(RecursiveASTVisitor, TraversesOverloadedOperator) {
  28   CXXOperatorCallExprTraverser Visitor;
  29   Visitor.ExpectMatch("()", 4, 9);
  30   EXPECT_TRUE(Visitor.runOver(
  31     "struct A {\n"
  32     "  int operator()();\n"
  33     "} a;\n"
  34     "int k = a();\n"));
  35 }
  36
  37 } // end anonymous namespace