| /*************************************************************************** |
| * |
| * 25.set.difference.cpp - test exercising lib.set.difference |
| * |
| * $Id$ |
| * |
| *************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 1994-2006 Rogue Wave Software. |
| * |
| **************************************************************************/ |
| |
| #include <algorithm> // for set_difference |
| #include <cstddef> // for size_t |
| |
| #include <rw_alg_test.h> |
| #include <rw_value.h> // for UserClass |
| #include <rw_driver.h> // for rw_test() |
| |
| /**************************************************************************/ |
| |
| _RWSTD_NAMESPACE (std) { |
| |
| // disable explicit instantiation for compilers (like MSVC) |
| // that can't handle it |
| #ifndef _RWSTD_NO_EXPLICIT_INSTANTIATION |
| |
| template |
| OutputIter<lt_comp<assign<base<cpy_ctor> > > > |
| set_difference (InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| OutputIter<lt_comp<assign<base<cpy_ctor> > > >); |
| |
| template |
| OutputIter<lt_comp<assign<base<cpy_ctor> > > > |
| set_difference (InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| InputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| OutputIter<lt_comp<assign<base<cpy_ctor> > > >, |
| binary_predicate<lt_comp<assign<base<cpy_ctor> > > >); |
| |
| #endif // _RWSTD_NO_EXPLICIT_INSTANTIATION |
| |
| } // namespace std |
| |
| /**************************************************************************/ |
| |
| struct Less |
| { |
| static std::size_t funcalls_; |
| |
| // dummy arguments provided to prevent the class from being |
| // default constructible and implicit conversion from int |
| Less (int /* dummy */, int /* dummy */) { |
| funcalls_ = 0; |
| } |
| |
| // return a type other than bool but one that is implicitly |
| // convertible to bool to detect incorrect assumptions |
| conv_to_bool operator() (const UserClass &x, |
| const UserClass &y) /* non-const */ { |
| ++funcalls_; |
| return conv_to_bool::make (x.data_.val_ < y.data_.val_); |
| } |
| |
| private: |
| void operator= (Less&); // not assignable |
| }; |
| |
| std::size_t Less::funcalls_; |
| |
| /**************************************************************************/ |
| |
| // ordinary (non-template) base to minimize code bloat |
| struct SetDifferenceBase |
| { |
| virtual ~SetDifferenceBase() {} |
| |
| const char* iter_names [3]; |
| |
| // pure virtual |
| virtual UserClass* |
| set_difference (const UserClass*, const UserClass*, const UserClass*, |
| const UserClass*, UserClass*, UserClass*, |
| const Less*) const = 0; |
| }; |
| |
| template <class InputIterator1, class InputIterator2, class OutputIterator> |
| struct SetDifference: SetDifferenceBase |
| { |
| SetDifference () { |
| iter_names [0] = type_name (InputIterator1 (0, 0, 0), (UserClass*)0); |
| iter_names [1] = type_name (InputIterator2 (0, 0, 0), (UserClass*)0); |
| iter_names [2] = type_name (OutputIterator (0, 0, 0), (UserClass*)0); |
| } |
| |
| virtual UserClass* |
| set_difference (const UserClass *xsrc1, const UserClass *xsrc1_end, |
| const UserClass *xsrc2, const UserClass *xsrc2_end, |
| UserClass *xdst, UserClass *xdst_end, |
| const Less *ppred) const { |
| |
| const InputIterator1 first1 (xsrc1, xsrc1, xsrc1_end); |
| const InputIterator1 last1 (xsrc1_end, xsrc1, xsrc1_end); |
| const InputIterator2 first2 (xsrc2, xsrc2, xsrc2_end); |
| const InputIterator2 last2 (xsrc2_end, xsrc2, xsrc2_end); |
| |
| const OutputIterator result (xdst, xdst, xdst_end); |
| |
| const OutputIterator ret = ppred ? |
| std::set_difference (first1, last1, first2, last2, result, *ppred) |
| : std::set_difference (first1, last1, first2, last2, result); |
| |
| // silence EDG eccp 3.7 and prior remark #550-D: |
| // variable was set but never used |
| _RWSTD_UNUSED (ret); |
| |
| return ret.cur_; |
| } |
| }; |
| |
| /**************************************************************************/ |
| |
| // exercises set_difference: 25.3.5.4 |
| void test_set_difference (int line, |
| const char *src1, |
| std::size_t nsrc1, |
| const char *src2, |
| std::size_t nsrc2, |
| const char *res, |
| std::size_t ndst, |
| bool predicate, |
| const SetDifferenceBase &alg) |
| { |
| const char* const it1name = alg.iter_names [0]; |
| const char* const it2name = alg.iter_names [1]; |
| const char* const outname = alg.iter_names [2]; |
| const char* const fname = "set_difference"; |
| const char* const funname = predicate ? "Less" : 0; |
| |
| UserClass* const xsrc1 = UserClass::from_char (src1, nsrc1, |
| true /* must be sorted */); |
| UserClass* const xsrc2 = UserClass::from_char (src2, nsrc2, |
| true /* must be sorted */); |
| |
| // assert that the sequences have been successfully created |
| RW_ASSERT (0 == nsrc1 || xsrc1); |
| RW_ASSERT (0 == nsrc2 || xsrc2); |
| |
| UserClass* const xdst = new UserClass [ndst]; |
| |
| const int max1_id = nsrc1 > 0 ? xsrc1[nsrc1 - 1].id_ : -1; |
| |
| UserClass* const xsrc1_end = xsrc1 + nsrc1; |
| UserClass* const xsrc2_end = xsrc2 + nsrc2; |
| UserClass* const xdst_end = xdst + ndst; |
| |
| const std::size_t last_n_op_lt = UserClass::n_total_op_lt_; |
| |
| const Less pred (0, 0); |
| const Less* const ppred = predicate ? &pred : 0; |
| |
| UserClass* xdst_res = alg.set_difference (xsrc1, xsrc1_end, |
| xsrc2, xsrc2_end, |
| xdst, xdst_end, ppred); |
| |
| // check the returned value |
| bool success = xdst_res == xdst_end; |
| rw_assert (success, 0, line, |
| "line %d: %s<%s, %s, %s%{?}, %s%{;}> (\"%s\", \"%s\", ...) " |
| "got res + %td, expected res + %zu", |
| __LINE__, fname, it1name, it2name, outname, predicate, |
| funname, src1, src2, xdst_res - xdst, ndst); |
| |
| // quit here to avoid the running out of the array boundaries |
| if (!success) { |
| delete[] xsrc1; |
| delete[] xsrc2; |
| delete[] xdst; |
| return; |
| } |
| |
| const std::size_t n_ops_lt = ppred ? |
| Less::funcalls_ : UserClass::n_total_op_lt_ - last_n_op_lt; |
| |
| // verify the algorithm correctness |
| std::size_t i = 0; |
| std::size_t n1 = 0; |
| std::size_t n2 = 0; |
| for ( ; i < ndst; ++i) { |
| xdst[i].origin_ <= max1_id ? n1++ : n2++; |
| success = xdst[i].data_.val_ == res[i]; |
| if (!success) |
| break; |
| } |
| |
| // to avoid errors in --trace mode |
| i = i < ndst ? i : ndst - 1; |
| |
| rw_assert (success, 0, line, |
| "line %d: %s<%s, %s, %s%{?}, %s%{;}> (\"%s\", \"%s\", ...) " |
| " ==> \"%{X=*.*}\", expected \"%s\"", |
| __LINE__, fname, it1name, it2name, outname, predicate, |
| funname, src1, src2, int (ndst), i, xdst, res); |
| |
| // verfiy that only elements from first sequence sequence were taken |
| success = n1 == ndst; |
| rw_assert (success, 0, line, |
| "line %d: %s<%s, %s, %s%{?}, %s%{;}> (\"%s\", \"%s\", ...) " |
| " ==> \"%{X=*.*}\" got %zu elements from first sequence and " |
| "%zu from second, expected %zu from first and 0 from second", |
| __LINE__, fname, it1name, it2name, outname, predicate, funname, |
| src1, src2, int (ndst), -1, xdst, n1, n2, ndst); |
| |
| // verify that the operation is stable : two equal elements |
| // should go in the same order |
| for (i = 1; i < ndst; i++) { |
| success = xdst[i - 1].origin_ < xdst[i].origin_; |
| if (!success) |
| break; |
| } |
| |
| // to avoid errors in --trace mode |
| if (ndst > 1) { |
| i = i < ndst ? i : ndst - 1; |
| |
| rw_assert (success, 0, line, |
| "line %d: %s<%s, %s, %s%{?}, %s%{;}> (\"%s\", \"%s\", ...)" |
| " ==> \"%{X=*.*}\" not stable : elements %#c==%#c have " |
| "ids %d >= %d ", |
| __LINE__, fname, it1name, it2name, outname, predicate, |
| funname, src1, src2, int (ndst), i, xdst, |
| xdst[i - 1].data_.val_, xdst[i].data_.val_, |
| xdst[i - 1].origin_, xdst[i].origin_); |
| } |
| |
| // verify the complexity |
| const std::size_t n_exp_ops = |
| nsrc1 + nsrc2 > 0 ? 2 * (nsrc1 + nsrc2) - 1 : 0; |
| |
| rw_assert (n_ops_lt <= n_exp_ops, 0, line, |
| "line %d: %s<%s, %s, %s%{?}, %s%{;}> (\"%s\", \"%s\", ...) " |
| "complexity: got %zu, expected no more than %zu", |
| __LINE__, fname, it1name, it2name, outname, predicate, funname, |
| src1, src2, n_ops_lt, n_exp_ops); |
| |
| delete[] xsrc1; |
| delete[] xsrc2; |
| delete[] xdst; |
| } |
| |
| /**************************************************************************/ |
| |
| void test_set_difference (const SetDifferenceBase &alg, |
| bool predicate) |
| { |
| const char* const it1name = alg.iter_names [0]; |
| const char* const it2name = alg.iter_names [1]; |
| const char* const outname = alg.iter_names [2]; |
| const char* const fname = "set_difference"; |
| const char* const funname = predicate ? "Less" : 0; |
| |
| rw_info (0, 0, 0, |
| "%s std::%s(%s, %3$s, %s, %4$s, %1$s%{?}, %s%{;})", |
| outname, fname, it1name, it2name, predicate, funname); |
| |
| #define TEST(src1, src2, res) \ |
| test_set_difference (__LINE__, src1, sizeof src1 - 1, \ |
| src2, sizeof src2 - 1, res, sizeof res - 1, \ |
| predicate, alg) |
| |
| // +-------------------- first set |
| // | +----------- second set |
| // | | +-- difference |
| // | | | |
| // V V V |
| TEST ("a", "", "a"); |
| TEST ("abcde", "", "abcde"); |
| TEST ("", "a", ""); |
| TEST ("", "abcde", ""); |
| TEST ("a", "b", "a"); |
| TEST ("b", "a", "b"); |
| TEST ("aa", "aa", ""); |
| TEST ("ab", "ab", ""); |
| TEST ("aa", "ab", "a"); |
| TEST ("aa", "bb", "aa"); |
| TEST ("ab", "bb", "a"); |
| TEST ("ac", "bb", "ac"); |
| TEST ("ace", "bdf", "ace"); |
| TEST ("acf", "bdf", "ac"); |
| TEST ("ade", "bdf", "ae"); |
| TEST ("bce", "bdf", "ce"); |
| TEST ("aacee", "aacee", ""); |
| TEST ("aacee", "aaace", "e"); |
| TEST ("aacee", "aaaae", "ce"); |
| TEST ("aacee", "aaaaa", "cee"); |
| TEST ("aacee", "aaabd", "cee"); |
| TEST ("aacee", "aabee", "c"); |
| TEST ("aaaaa", "aaaaa", ""); |
| TEST ("aaaaa", "aaaa", "a"); |
| TEST ("aaaaa", "aaa", "aa"); |
| TEST ("aaaaa", "aa", "aaa"); |
| TEST ("aaaaa", "a", "aaaa"); |
| TEST ("acegi", "bdfhj", "acegi"); |
| TEST ("bdfhj", "acegi", "bdfhj"); |
| } |
| |
| /**************************************************************************/ |
| |
| /* extern */ int rw_opt_no_predicate; // --no-predicate |
| /* extern */ int rw_opt_no_input_iter; // --no-InputIterator |
| /* extern */ int rw_opt_no_output_iter; // --no-OutputIterator |
| /* extern */ int rw_opt_no_fwd_iter; // --no-ForwardIterator |
| /* extern */ int rw_opt_no_bidir_iter; // --no-BidirectionalIterator |
| /* extern */ int rw_opt_no_rnd_iter; // --no-RandomAccessIterator |
| |
| /**************************************************************************/ |
| |
| template <class InputIterator1, class InputIterator2, class OutputIterator> |
| void gen_set_difference_test (const InputIterator1&, |
| const InputIterator2&, |
| const OutputIterator&, |
| bool predicate) |
| { |
| const SetDifference<InputIterator1, InputIterator2, OutputIterator> alg; |
| |
| test_set_difference (alg, predicate); |
| } |
| |
| /**************************************************************************/ |
| |
| template <class InputIterator1, class InputIterator2> |
| void gen_set_difference_test (const InputIterator1 &it1, |
| const InputIterator2 &it2, |
| bool predicate) |
| { |
| if (0 == rw_opt_no_output_iter) |
| gen_set_difference_test ( |
| it1, it2, OutputIter<UserClass>(0, 0, 0), predicate); |
| if (0 == rw_opt_no_fwd_iter) |
| gen_set_difference_test ( |
| it1, it2, FwdIter<UserClass>(0, 0, 0), predicate); |
| if (0 == rw_opt_no_bidir_iter) |
| gen_set_difference_test ( |
| it1, it2, BidirIter<UserClass>(0, 0, 0), predicate); |
| if (0 == rw_opt_no_rnd_iter) |
| gen_set_difference_test ( |
| it1, it2, RandomAccessIter<UserClass>(0, 0, 0), predicate); |
| } |
| |
| template <class InputIterator1> |
| void gen_set_difference_test (const InputIterator1 &it1, |
| bool predicate) |
| { |
| if (0 == rw_opt_no_input_iter) |
| gen_set_difference_test ( |
| it1, InputIter<UserClass>(0, 0, 0), predicate); |
| if (0 == rw_opt_no_fwd_iter) |
| gen_set_difference_test ( |
| it1, ConstFwdIter<UserClass>(0, 0, 0), predicate); |
| if (0 == rw_opt_no_bidir_iter) |
| gen_set_difference_test ( |
| it1, ConstBidirIter<UserClass>(0, 0, 0), predicate); |
| if (0 == rw_opt_no_rnd_iter) |
| gen_set_difference_test ( |
| it1, ConstRandomAccessIter<UserClass>(0, 0, 0), predicate); |
| } |
| |
| // generates a specialization of the set_union test for each of the required |
| // iterator categopries |
| void gen_set_difference_test (bool predicate) |
| { |
| rw_info (0, 0, 0, |
| "template <class %s, class %s, class %s%{?}, class %s%{;}> %3$s " |
| "set_difference (%1$s, %1$s, %2$s, %2$s, %3$s%{?}, %s%{;})", |
| "InputIterator1", "InputIterator2", "OutputIterator", |
| predicate, "Compare", predicate, "Compare"); |
| |
| if (rw_opt_no_output_iter) |
| rw_note (0, 0, 0, "OutputIterator test disabled"); |
| |
| if (rw_opt_no_input_iter) |
| rw_note (0, 0, 0, "InputIterator test disabled"); |
| else |
| gen_set_difference_test (InputIter<UserClass>(0, 0, 0), predicate); |
| |
| if (rw_opt_no_fwd_iter) |
| rw_note (0, 0, 0, "ForwardIterator test disabled"); |
| else |
| gen_set_difference_test (ConstFwdIter<UserClass>(0, 0, 0), predicate); |
| |
| if (rw_opt_no_bidir_iter) |
| rw_note (0, 0, 0, "BidirectionalIterator test disabled"); |
| else |
| gen_set_difference_test (ConstBidirIter<UserClass>(0, 0, 0), predicate); |
| |
| if (rw_opt_no_rnd_iter) |
| rw_note (0, 0, 0, "RandomAccessIterator test disabled"); |
| else |
| gen_set_difference_test ( |
| ConstRandomAccessIter<UserClass>(0, 0, 0), predicate); |
| } |
| |
| /**************************************************************************/ |
| |
| static int |
| run_test (int, char*[]) |
| { |
| if (rw_opt_no_predicate) |
| rw_note (0, 0, 0, "predicate test disabled"); |
| |
| const int niters = rw_opt_no_predicate ? 1 : 2; |
| |
| ////////////////////////////////////////////////////////////////// |
| for (int i = 0; i != niters; ++i) { |
| gen_set_difference_test (1 == i); |
| } |
| |
| return 0; |
| } |
| |
| /**************************************************************************/ |
| |
| int main (int argc, char *argv[]) |
| { |
| return rw_test (argc, argv, __FILE__, |
| "lib.set.difference", |
| 0 /* no comment */, run_test, |
| "|-no-predicate#" |
| "|-no-InputIterator# " |
| "|-no-OutputIterator# " |
| "|-no-ForwardIterator# " |
| "|-no-BidirectionalIterator# " |
| "|-no-RandomAccessIterator#", |
| &rw_opt_no_predicate, |
| &rw_opt_no_input_iter, |
| &rw_opt_no_output_iter, |
| &rw_opt_no_fwd_iter, |
| &rw_opt_no_bidir_iter, |
| &rw_opt_no_rnd_iter); |
| } |
