clang/unittests/Tooling/RecursiveASTVisitorTests/Attr.cpp

   1 //===- unittest/Tooling/RecursiveASTVisitorTests/Attr.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 "CRTPTestVisitor.h"
  10
  11 using namespace clang;
  12
  13 namespace {
  14
  15 // Check to ensure that attributes and expressions within them are being
  16 // visited.
  17 class AttrVisitor : public CRTPExpectedLocationVisitor<AttrVisitor> {
  18 public:
  19   bool VisitMemberExpr(MemberExpr *ME) {
  20     Match(ME->getMemberDecl()->getNameAsString(), ME->getBeginLoc());
  21     return true;
  22   }
  23   bool VisitAttr(Attr *A) {
  24     Match("Attr", A->getLocation());
  25     return true;
  26   }
  27   bool VisitGuardedByAttr(GuardedByAttr *A) {
  28     Match("guarded_by", A->getLocation());
  29     return true;
  30   }
  31 };
  32
  33 TEST(RecursiveASTVisitor, AttributesAreVisited) {
  34   AttrVisitor Visitor;
  35   Visitor.ExpectMatch("Attr", 4, 24);
  36   Visitor.ExpectMatch("guarded_by", 4, 24);
  37   Visitor.ExpectMatch("mu1",  4, 35);
  38   Visitor.ExpectMatch("Attr", 5, 29);
  39   Visitor.ExpectMatch("mu1",  5, 54);
  40   Visitor.ExpectMatch("mu2",  5, 59);
  41   EXPECT_TRUE(Visitor.runOver(
  42     "class Foo {\n"
  43     "  int mu1;\n"
  44     "  int mu2;\n"
  45     "  int a __attribute__((guarded_by(mu1)));\n"
  46     "  void bar() __attribute__((exclusive_locks_required(mu1, mu2)));\n"
  47     "};\n"));
  48 }
  49
  50 } // end anonymous namespace