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Jose Caban
415
extern/stdcxx/4.2.1/tests/algorithms/25.reverse.cpp
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415
extern/stdcxx/4.2.1/tests/algorithms/25.reverse.cpp
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/***************************************************************************
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*
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* 25.reverse.cpp - test exercising 25.2.9 [lib.alg.reverse]
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*
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* $Id: 25.reverse.cpp 510970 2007-02-23 14:57:45Z faridz $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1994-2006 Rogue Wave Software.
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*
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**************************************************************************/
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#include <algorithm> // for reverse, reverse_copy
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#include <cstring> // for size_t, strlen()
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#include <alg_test.h>
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#include <rw_value.h> // for UserClass
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#include <driver.h> // for rw_test()
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/**************************************************************************/
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_RWSTD_NAMESPACE (std) {
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// disable explicit instantiation for compilers (like MSVC)
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// that can't handle it
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#ifndef _RWSTD_NO_EXPLICIT_INSTANTIATION
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template
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void reverse (BidirIter<assign<base<cpy_ctor> > >,
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BidirIter<assign<base<cpy_ctor> > >);
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template
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OutputIter<eq_comp<assign<base<> > > >
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reverse_copy (BidirIter<eq_comp<assign<base<> > > >,
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BidirIter<eq_comp<assign<base<> > > >,
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OutputIter<eq_comp<assign<base<> > > >);
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#endif // _RWSTD_NO_EXPLICIT_INSTANTIATION
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} // namespace std
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/**************************************************************************/
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// tags to select reverse or reverse_copy at compile time
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struct ReverseTag {
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enum { fname_inx = 0 };
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int dummy;
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};
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struct ReverseCopyTag {
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enum { fname_inx = 1 };
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int dummy;
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};
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// used as a dummy template argument to test functions exercising reverse()
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// and reverse_if() (to differentiate from reverse_copy() and reverse_copy_if())
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struct NoIterator { };
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const char* type_name (NoIterator, const UserClass*)
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{
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return 0;
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}
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/**************************************************************************/
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unsigned iter_swap_calls;
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_RWSTD_NAMESPACE (std) {
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_RWSTD_SPECIALIZED_FUNCTION
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void iter_swap (BidirIter<UserClass> i, BidirIter<UserClass> j)
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{
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++iter_swap_calls;
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const int tmp = (*i).data_.val_;
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(*i).data_.val_ = (*j).data_.val_;
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(*j).data_.val_ = tmp;
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}
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_RWSTD_SPECIALIZED_FUNCTION
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void iter_swap (RandomAccessIter<UserClass> i, RandomAccessIter<UserClass> j)
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{
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++iter_swap_calls;
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const int tmp = (*i).data_.val_;
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(*i).data_.val_ = (*j).data_.val_;
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(*j).data_.val_ = tmp;
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}
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} // namespace std
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/**************************************************************************/
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// exercises std::reverse()
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template <class Iterator, class T>
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void test_reverse (int line,
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const char *src,
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Iterator dummy, NoIterator, const T*, ReverseTag)
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{
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static const char* const itname = type_name (dummy, (T*)0);
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const char* const fname = "reverse";
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// compute the length of the source sequence
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const std::size_t nsrc = std::strlen (src);
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// construct a sequence of `nsrc' elements to pass to reverse
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T* const xsrc = T::from_char (src, nsrc);
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// construct iterators pointing to the beginning and end
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// of the source sequence
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const Iterator first = make_iter (xsrc, xsrc, xsrc + nsrc, dummy);
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const Iterator last = make_iter (xsrc + nsrc, xsrc, xsrc + nsrc, dummy);
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// zero out the iter_swap() call counter
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iter_swap_calls = 0;
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// call reverse()
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std::reverse (first, last);
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bool success = true;
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std::size_t i = 0;
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// verify that the sequence was correctly reversed and that it was
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// done by swapping elements i.e., not simply by copying them over
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for ( ; i != nsrc; ++i) {
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typedef unsigned char UChar;
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success = UChar (src [i]) == xsrc [nsrc - i - 1].data_.val_;
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if (!success)
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break;
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}
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rw_assert (success, 0, line,
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"line %d: %s<%s>(\"%s\", ...) ==> "
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"\"%{X=*.*}\"; unexpected element value %#c at offset %zu",
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__LINE__, fname, itname, src,
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int (nsrc), int (i), xsrc,
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xsrc [nsrc - i - 1].data_.val_, i);
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const std::size_t iter_swap_expect = nsrc / 2;
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success = iter_swap_calls == iter_swap_expect;
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rw_assert (success, 0, line,
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"line %d: %s<%s>(\"%s\", ...); called iter_swap() "
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"%zu times, %zu expected",
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__LINE__, fname, itname, src,
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iter_swap_calls, iter_swap_expect);
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delete[] xsrc;
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}
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/**************************************************************************/
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// exercises std::reverse_copy()
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template <class Iterator, class OutputIterator, class T>
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void test_reverse (int line,
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const char *src,
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Iterator& it, OutputIterator& ,
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const T*, ReverseCopyTag)
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{
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static const char* const itname = type_name (it, (T*)0);
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const char* const fname = "reverse_copy";
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const std::size_t nsrc = std::strlen (src);
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T* const xsrc = T::from_char (src, nsrc);
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T* const xdst = T::from_char (src, nsrc);
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const Iterator first (xsrc, xsrc, xsrc + nsrc);
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const Iterator last (xsrc + nsrc, xsrc, xsrc + nsrc);
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const OutputIterator result (xdst, xdst, xdst + nsrc);
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std::size_t last_n_op_assign = T::n_total_op_assign_;
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const OutputIterator end = std::reverse_copy (first, last, result);
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// verify that the returned iterator is set as expected
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bool success = end.cur_ == result.cur_ + nsrc;
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rw_assert (success, 0, line,
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"line %d: %s<%s>(\"%s\", ...) == result + %zu, got %td",
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__LINE__, fname, itname, src, nsrc, end.cur_ - xdst);
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// verify that the sequence was correctly reversed
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std::size_t i = 0;
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for ( ; i != nsrc; ++i) {
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typedef unsigned char UChar;
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success = UChar (src [i]) == xdst [nsrc - i - 1].data_.val_;
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if (!success)
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break;
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}
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rw_assert (success, 0, line,
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"line %d: %s<%s>(\"%s\", ...) ==> "
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"\"%{X=*.*}\"; unexpected element value %#c at offset %zu",
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__LINE__, fname, itname, src,
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int (nsrc), int (i), xsrc,
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xdst [nsrc - i - 1].data_.val_, i);
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success = T::n_total_op_assign_ - last_n_op_assign == nsrc;
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rw_assert (success, 0, line,
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"line %d: %s<%s>(\"%s\", ...); called operator=() "
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"%zu times, %zu expected",
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__LINE__, fname, itname, src,
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T::n_total_op_assign_ - last_n_op_assign, nsrc);
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delete[] xsrc;
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delete[] xdst;
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}
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/**************************************************************************/
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// exercises all four function templates
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template <class Iterator1, class Iterator2, class T, class Tag>
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void test_reverse (Iterator1 it1, Iterator2 it2, const T*, Tag tag)
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{
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static const char* const it1name = type_name (it1, (T*)0);
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static const char* const it2name = type_name (it2, (T*)0);
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if (tag.fname_inx) { // reverse_copy()
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rw_info (0, 0, 0, "std::reverse_copy (%s, %1$s, %s)", it1name, it2name);
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}
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else { // reverse()
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rw_info (0, 0, 0, "std::reverse (%s, %1$s)", it1name);
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}
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#define TEST(src) \
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test_reverse (__LINE__, src, it1, it2, (T*)0, tag)
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TEST ("");
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TEST ("a");
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TEST ("ab");
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TEST ("abc");
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TEST ("abcd");
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TEST ("abcde");
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TEST ("abcdef");
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TEST ("abcdefg");
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TEST ("abcdefgh");
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TEST ("abcdefghi");
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TEST ("abcdefghij");
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TEST ("abcdefghijk");
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TEST ("abcdefghijkl");
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TEST ("abcdefghijklm");
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TEST ("abcdefghijklmn");
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TEST ("abcdefghijklmno");
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TEST ("abcdefghijklmnop");
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TEST ("abcdefghijklmnopq");
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TEST ("abcdefghijklmnopqr");
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TEST ("abcdefghijklmnopqrs");
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TEST ("abcdefghijklmnopqrst");
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TEST ("abcdefghijklmnopqrstu");
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TEST ("abcdefghijklmnopqrstuv");
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TEST ("abcdefghijklmnopqrstuvw");
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TEST ("abcdefghijklmnopqrstuvwx");
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TEST ("abcdefghijklmnopqrstuvwxy");
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TEST ("abcdefghijklmnopqrstuvwxyz");
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}
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/**************************************************************************/
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/* extern */ int rw_opt_no_reverse; // --no-reverse
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/* extern */ int rw_opt_no_reverse_copy; // --no-reverse_copy
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/* extern */ int rw_opt_no_output_iter; // --no-OutputIterator
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/* extern */ int rw_opt_no_fwd_iter; // --no-ForwardIterator
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/* extern */ int rw_opt_no_bidir_iter; // --no-BidirectionalIterator
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/* extern */ int rw_opt_no_rnd_iter; // --no-RandomAccessIterator
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template <class T, class Tag>
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void test_reverse(const T*, Tag tag)
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{
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rw_info (0, 0, 0,
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"template <class %s> %1$s std::reverse (%1$s, %1$s)",
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"BidirectionalIterator");
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if (rw_opt_no_bidir_iter) {
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rw_note (0, __FILE__, __LINE__, "BidirectionalIterator test disabled");
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}
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else {
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test_reverse (BidirIter<T>(), NoIterator (), (T*)0, tag);
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}
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if (rw_opt_no_rnd_iter) {
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rw_note (0, __FILE__, __LINE__, "RandomAccessIterator test disabled");
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}
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else {
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test_reverse (RandomAccessIter<T>(), NoIterator (), (T*)0, tag);
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}
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}
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/**************************************************************************/
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template <class ReverseIterator, class T, class Tag>
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void test_reverse_copy (ReverseIterator it, const T*, Tag tag)
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{
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if (rw_opt_no_output_iter) {
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rw_note (0, __FILE__, __LINE__, "OutputIterator test disabled");
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}
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else {
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test_reverse (it, OutputIter<T>(0, 0, 0), (T*)0, tag);
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}
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if (rw_opt_no_fwd_iter) {
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rw_note (0, __FILE__, __LINE__, "ForwardIterator test disabled");
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}
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else {
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test_reverse (it, FwdIter<T>(), (T*)0, tag);
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}
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if (rw_opt_no_bidir_iter) {
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rw_note (0, __FILE__, __LINE__, "BidirectionalIterator test disabled");
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}
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else {
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test_reverse (it, BidirIter<T>(), (T*)0, tag);
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}
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if (rw_opt_no_rnd_iter) {
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rw_note (0, __FILE__, __LINE__, "RandomAccessIterator test disabled");
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}
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else {
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test_reverse (it, RandomAccessIter<T>(), (T*)0, tag);
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}
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}
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/**************************************************************************/
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template <class T, class Tag>
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void test_reverse_copy (const T*, Tag tag)
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{
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rw_info (0, 0, 0,
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"template <class %s, class %s> %2$s "
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"std::reverse_copy (%1$s, %1$s, %2$s)",
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"BidirectionalIterator", "OutputIterator");
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if (rw_opt_no_bidir_iter) {
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rw_note (0, __FILE__, __LINE__, "BidirectionalIterator test disabled");
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}
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else {
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test_reverse_copy (ConstBidirIter<T>(), (T*)0, tag);
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}
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if (rw_opt_no_rnd_iter) {
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rw_note (0, __FILE__, __LINE__, "RandomAccessIterator test disabled");
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}
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else {
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test_reverse_copy (ConstRandomAccessIter<T>(), (T*)0, tag);
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}
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}
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/**************************************************************************/
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static int
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run_test (int, char*[])
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{
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const ReverseTag reverse_tag = { false };
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const ReverseCopyTag reverse_copy_tag = { true };
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if (rw_opt_no_reverse) {
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rw_note (0, __FILE__, __LINE__, "std::reverse test disabled");
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}
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else {
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test_reverse((UserClass*)0, reverse_tag);
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}
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if (rw_opt_no_reverse_copy) {
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rw_note (0, __FILE__, __LINE__, "std::reverse_copy test disabled");
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}
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else {
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test_reverse_copy((UserClass*)0, reverse_copy_tag);
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}
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return 0;
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}
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/**************************************************************************/
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int main (int argc, char *argv[])
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{
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return rw_test (argc, argv, __FILE__,
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"lib.alg.reverse",
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0 /* no comment */, run_test,
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"|-no-reverse# "
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"|-no-reverse_copy# "
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"|-no-OutputIterator# "
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"|-no-ForwardIterator# "
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"|-no-BidirectionalIterator# "
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"|-no-RandomAccessIterator#",
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&rw_opt_no_reverse,
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&rw_opt_no_reverse_copy,
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&rw_opt_no_output_iter,
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&rw_opt_no_fwd_iter,
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&rw_opt_no_bidir_iter,
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&rw_opt_no_rnd_iter);
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}
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