89 lines
4.4 KiB
C++
89 lines
4.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// <iterator>
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// __libcpp_is_trivial_iterator<Tp>
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// __libcpp_string_gets_noexcept_iterator determines if an iterator can be used
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// w/o worrying about whether or not certain operations can throw.
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// This gives us a "fast path for string operations"
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//
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#include <iterator>
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#include <cassert>
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#include <string>
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#include <vector>
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#include <initializer_list>
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#include "test_macros.h"
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#include "test_iterators.h"
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#ifndef TEST_HAS_NO_EXCEPTIONS
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static const bool expected = false;
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#else
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// Under libcpp-no-exceptions all noexcept expressions are trivially true, so
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// any check for a noexcept returning false must actually check for it being
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// true.
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static const bool expected = true;
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#endif
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int main()
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{
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// basic tests
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<char *>::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<const char *>::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::move_iterator<char *> > ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::move_iterator<const char *> >::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::reverse_iterator<char *> > ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::reverse_iterator<const char *> >::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::__wrap_iter<char *> > ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::__wrap_iter<const char *> >::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::reverse_iterator<std::__wrap_iter<char *> > > ::value), "");
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// iterators in the libc++ test suite
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static_assert(std::__libcpp_string_gets_noexcept_iterator<output_iterator <char *> >::value == expected, "");
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static_assert(std::__libcpp_string_gets_noexcept_iterator<input_iterator <char *> >::value == expected, "");
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static_assert(std::__libcpp_string_gets_noexcept_iterator<forward_iterator <char *> >::value == expected, "");
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static_assert(std::__libcpp_string_gets_noexcept_iterator<bidirectional_iterator<char *> >::value == expected, "");
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static_assert(std::__libcpp_string_gets_noexcept_iterator<random_access_iterator<char *> >::value == expected, "");
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static_assert(std::__libcpp_string_gets_noexcept_iterator<ThrowingIterator <char *> >::value == expected, "");
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#if TEST_STD_VER >= 11
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<NonThrowingIterator <char *> >::value), "");
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#else
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static_assert(std::__libcpp_string_gets_noexcept_iterator<NonThrowingIterator <char *> >::value == expected, "");
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#endif
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//
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// iterators from libc++'s containers
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//
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// string
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::vector<char>::iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::vector<char>::const_iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::vector<char>::reverse_iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::vector<char>::const_reverse_iterator>::value), "");
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// vector
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::basic_string<char>::iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::basic_string<char>::const_iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::basic_string<char>::reverse_iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::basic_string<char>::const_reverse_iterator>::value), "");
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#if TEST_STD_VER >= 11
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// Initializer list (which has no reverse iterators)
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::initializer_list<char>::iterator> ::value), "");
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static_assert(( std::__libcpp_string_gets_noexcept_iterator<std::initializer_list<char>::const_iterator> ::value), "");
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#endif
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}
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