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//===--- alias_template.cc - test input file for iwyu ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Tests alias templates. Does not test type aliases.
#include "tests/cxx/direct.h"
template<class T> struct FullUseTemplateArgInSizeof {
char argument[sizeof(T)];
};
// Test that we go through alias template and handle aliased template
// specialization.
template<class T> using Alias = FullUseTemplateArgInSizeof<T>;
// IWYU: IndirectClass needs a declaration
// IWYU: IndirectClass is...*indirect.h
Alias<IndirectClass> alias;
// Test following through entire chain of aliases.
template<class T> using AliasChain1 = FullUseTemplateArgInSizeof<T>;
template<class T> using AliasChain2 = AliasChain1<T>;
// IWYU: IndirectClass needs a declaration
// IWYU: IndirectClass is...*indirect.h
AliasChain2<IndirectClass> aliasChain;
// Test the case when aliased type isn't a template specialization.
template<class T> using Pointer = T*;
Pointer<int> intPtr;
template <class T>
struct FullUseTemplateArgAsVar {
T t;
};
// Test the used class being nested deeper in the alias
template <typename T>
using AliasNested = FullUseTemplateArgAsVar<FullUseTemplateArgAsVar<T>>;
// IWYU: IndirectClass needs a declaration
// IWYU: IndirectClass is...*indirect.h
AliasNested<IndirectClass> aliasNested;
template <typename T>
using AliasNested2 = FullUseTemplateArgInSizeof<FullUseTemplateArgInSizeof<T>>;
// IWYU: IndirectClass needs a declaration
// IWYU: IndirectClass is...*indirect.h
AliasNested2<IndirectClass> aliasNested2;
/**** IWYU_SUMMARY
tests/cxx/alias_template.cc should add these lines:
#include "tests/cxx/indirect.h"
tests/cxx/alias_template.cc should remove these lines:
- #include "tests/cxx/direct.h" // lines XX-XX
The full include-list for tests/cxx/alias_template.cc:
#include "tests/cxx/indirect.h" // for IndirectClass
***** IWYU_SUMMARY */
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