clang/unittests/Tooling/RecursiveASTVisitorTests/TemplateArgumentLocTraverser.cpp

   1 //===- TemplateArgumentLocTraverser.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 TemplateArgumentLocTraverser : public ExpectedLocationVisitor {
  16 public:
  17   bool TraverseTemplateArgumentLoc(const TemplateArgumentLoc &ArgLoc) override {
  18     std::string ArgStr;
  19     llvm::raw_string_ostream Stream(ArgStr);
  20     const TemplateArgument &Arg = ArgLoc.getArgument();
  21
  22     Arg.print(Context->getPrintingPolicy(), Stream, /*IncludeType*/ true);
  23     Match(ArgStr, ArgLoc.getLocation());
  24     return ExpectedLocationVisitor::TraverseTemplateArgumentLoc(ArgLoc);
  25   }
  26 };
  27
  28 TEST(RecursiveASTVisitor, VisitsClassTemplateTemplateParmDefaultArgument) {
  29   TemplateArgumentLocTraverser Visitor;
  30   Visitor.ExpectMatch("X", 2, 40);
  31   EXPECT_TRUE(Visitor.runOver(
  32     "template<typename T> class X;\n"
  33     "template<template <typename> class T = X> class Y;\n"
  34     "template<template <typename> class T> class Y {};\n"));
  35 }
  36
  37 } // end anonymous namespace