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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <iterator>
// struct iterator_traits
// {
// };
#include <iterator>
#include "test_macros.h"
struct A {};
struct NotAnIteratorEmpty {};
struct NotAnIteratorNoDifference
{
// typedef int difference_type;
typedef A value_type;
typedef A* pointer;
typedef A& reference;
typedef std::forward_iterator_tag iterator_category;
};
struct NotAnIteratorNoValue
{
typedef int difference_type;
// typedef A value_type;
typedef A* pointer;
typedef A& reference;
typedef std::forward_iterator_tag iterator_category;
};
struct NotAnIteratorNoPointer
{
typedef int difference_type;
typedef A value_type;
// typedef A* pointer;
typedef A& reference;
typedef std::forward_iterator_tag iterator_category;
};
struct NotAnIteratorNoReference
{
typedef int difference_type;
typedef A value_type;
typedef A* pointer;
// typedef A& reference;
typedef std::forward_iterator_tag iterator_category;
};
struct NotAnIteratorNoCategory
{
typedef int difference_type;
typedef A value_type;
typedef A* pointer;
typedef A& reference;
// typedef std::forward_iterator_tag iterator_category;
};
int main(int, char**)
{
{
typedef std::iterator_traits<NotAnIteratorEmpty> T;
typedef T::difference_type DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::value_type VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::pointer PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::reference RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
}
{
typedef std::iterator_traits<NotAnIteratorNoDifference> T;
typedef T::difference_type DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::value_type VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::pointer PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::reference RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
}
{
typedef std::iterator_traits<NotAnIteratorNoValue> T;
typedef T::difference_type DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::value_type VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::pointer PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::reference RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
}
#if TEST_STD_VER <= 17 || !defined(__cpp_lib_concepts)
{
typedef std::iterator_traits<NotAnIteratorNoPointer> T;
typedef T::difference_type DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::value_type VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::pointer PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::reference RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
}
#endif // TEST_STD_VER <= 17 || !defined(__cpp_lib_concepts)
{
typedef std::iterator_traits<NotAnIteratorNoReference> T;
typedef T::difference_type DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::value_type VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::pointer PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::reference RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
}
{
typedef std::iterator_traits<NotAnIteratorNoCategory> T;
typedef T::difference_type DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::value_type VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::pointer PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::reference RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
}
return 0;
}
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