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Jose Caban
340
extern/stdcxx/4.2.1/tests/algorithms/25.equal.range.cpp
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340
extern/stdcxx/4.2.1/tests/algorithms/25.equal.range.cpp
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/***************************************************************************
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*
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* 25.equal.range.cpp - test exercising 25.3.3.3 [lib.equal.range]
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*
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* $Id: 25.equal.range.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 2006 Rogue Wave Software.
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*
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**************************************************************************/
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#include <rw/_config.h>
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#if defined (__IBMCPP__) && !defined (_RWSTD_NO_IMPLICIT_INCLUSION)
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// disable implicit inclusion to work around a limitation
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// of IBM VisualAge 5.0 (see PR #26959)
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# define _RWSTD_NO_IMPLICIT_INCLUSION
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#endif
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#include <algorithm> // for equal_range()
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#include <cstring> // for strlen()
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#include <alg_test.h> // for iterators
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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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#ifndef _RWSTD_NO_EXPLICIT_INSTANTIATION
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template
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pair <FwdIter<lt_comp<assign<base<cpy_ctor> > > >,
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FwdIter<lt_comp<assign<base<cpy_ctor> > > > >
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equal_range (FwdIter<lt_comp<assign<base<cpy_ctor> > > >,
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FwdIter<lt_comp<assign<base<cpy_ctor> > > >,
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const lt_comp<assign<base<cpy_ctor> > >&);
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template
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pair <FwdIter<lt_comp<assign<base<cpy_ctor> > > >,
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FwdIter<lt_comp<assign<base<cpy_ctor> > > > >
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equal_range (FwdIter<lt_comp<assign<base<cpy_ctor> > > >,
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FwdIter<lt_comp<assign<base<cpy_ctor> > > >,
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const lt_comp<assign<base<cpy_ctor> > >&,
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binary_predicate<lt_comp<assign<base<cpy_ctor> > > >);
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#endif // _RWSTD_NO_EXPLICIT_INSTANTIATION
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} // namespace std
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/**************************************************************************/
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// distinct and not Less-Than-Comparable with class T (except as
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// defined below) to detect unwarranted assumptions made by the
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// implementation of the algorithms
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struct Y
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{
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UserClass xval_;
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// not Default-Constructible
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Y (char val, int /*dummy */): xval_ () {
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typedef unsigned char UChar;
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xval_.data_.val_ = int (UChar (val));
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}
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// CopyConstructible
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Y (const Y &rhs): xval_ (rhs.xval_) { }
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private:
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void operator=(Y&); // not Assignable
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};
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inline conv_to_bool
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operator< (const UserClass &lhs, const Y &rhs)
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{
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return conv_to_bool::make (lhs < rhs.xval_);
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}
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inline conv_to_bool
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operator< (const Y &lhs, const UserClass &rhs)
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{
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return conv_to_bool::make (lhs.xval_ < rhs);
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}
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// predicate used as the Compare argument to upper_bound()
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struct LessThan
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{
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static std::size_t funcalls_;
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LessThan (int /* dummy */, int /* dummy */) {
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funcalls_ = 0;
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}
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// return a type other than bool but one that is implicitly
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// convertible to bool to detect incorrect assumptions
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conv_to_bool operator() (const UserClass &lhs, const Y &rhs) {
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++funcalls_;
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return conv_to_bool::make (lhs < rhs.xval_);
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}
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conv_to_bool operator() (const Y &lhs, const UserClass &rhs) {
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++funcalls_;
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return conv_to_bool::make (lhs.xval_ < rhs);
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}
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private:
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void operator= (LessThan&); // not assignable
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};
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std::size_t LessThan::funcalls_;
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/**************************************************************************/
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template <class T, class ForwardIterator>
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void test_equal_range (int line,
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const char *src_str,
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char val_char,
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std::size_t result_loff,
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std::size_t result_uoff,
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std::size_t ncomp,
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const ForwardIterator &it,
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const T*,
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bool predicate)
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{
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RW_ASSERT (0 != src_str);
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const char* const tname = "UserClass";
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const char* const itname = type_name (it, (T*)0);
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const char* const funname = predicate ? "LessThan" : "operator<()";
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const std::size_t nsrc = std::strlen (src_str);
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T* const xsrc = T::from_char (src_str, nsrc + 1);
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T* const xsrc_end = xsrc + nsrc;
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if (nsrc < result_uoff)
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result_uoff = nsrc;
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// construct the source range to pass to the algorithm
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const ForwardIterator first = make_iter (xsrc, xsrc, xsrc_end, it);
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const ForwardIterator last = make_iter (xsrc_end, xsrc, xsrc_end, it);
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// construct the object to pass to the algorithm
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// the type of the object is distinct from the iterator's value_type
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// to detect unwarranted assumptions made by the implementation of
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// the algorithm
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const Y value (val_char, 0 /* dummy */);
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// construct the Compare function object to pass to the algorithm
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// when `predicate' is true
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const LessThan comp (0, 0 /* dummy arguments */);
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// reset the counter of invocations of T::operator<()
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T::n_total_op_lt_ = 0;
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// invoke the appropriate form of the algorithm, storing
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// the resturned value
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const std::pair <ForwardIterator, ForwardIterator> result = predicate
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? std::equal_range (first, last, value, comp)
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: std::equal_range (first, last, value);
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// silence bogus EDG eccp 3.6 remark #550-D:
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// variable was set but never used
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_RWSTD_UNUSED (result);
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// verify correctness
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const std::size_t loff = std::size_t (result.first.cur_ - xsrc);
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const std::size_t uoff = std::size_t (result.second.cur_ - xsrc);
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rw_assert (loff == result_loff && uoff == result_uoff, 0, line,
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"equal_range <%s, const %s&%{?}, %s%{;}> (\"%s\", %#c, ...) "
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"== first + { %zu, %zu }, got first + { %zu, %zu }",
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itname, tname, predicate, funname, src_str, val_char,
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loff, uoff, result_loff, result_uoff);
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// verify complexity
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const std::size_t n_ops = predicate
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? LessThan::funcalls_ : T::n_total_op_lt_;
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rw_assert (n_ops <= ncomp, 0, line,
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"equal_range <%s, const %s&%{?}, %s%{;}> (\"%s\", %#c, ...) "
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"complexity: invoked %4$s at most %zu times, got %zu",
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itname, tname, predicate, funname, src_str, val_char,
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ncomp, n_ops);
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delete[] xsrc;
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}
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/**************************************************************************/
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template <class T, class ForwardIterator>
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void test_equal_range (const ForwardIterator &it,
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const T*,
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bool predicate)
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{
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const char* const itname = type_name (it, (T*)0);
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const char* const funname = predicate ? "LessThan" : "operator<()";
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rw_info (0, 0, 0,
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"std::equal_range (%s, %1$s, const UserClass&%{?}, %s%{;})",
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itname, predicate, funname);
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#define TEST(str, val, loff, uoff, comp) \
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test_equal_range (__LINE__, str, val, std::size_t (loff), \
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std::size_t (uoff), std::size_t (comp), \
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it, (T*)0, predicate)
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// +------------------ source sequence
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// | +------------ value argument
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// | | +-------- lower offset of the returned pair
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// | | | +----- upper offset of the returned pair
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// | | | | +-- complexity: at most (2 * log(last - first) + 1)
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// | | | | | comparisons (or applications of the predicate)
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// | | | | |
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// V V V V V
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TEST ("", 'a', 0, 0, 0);
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TEST ("a", 'a', 0, 1, 2);
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TEST ("a", 'b', 1, 1, 1);
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TEST ("b", 'a', 0, 0, 2);
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TEST ("aa", 'a', 0, 2, 4);
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TEST ("ab", 'a', 0, 1, 4);
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TEST ("ab", 'b', 1, 2, 3);
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TEST ("bb", 'a', 0, 0, 4);
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TEST ("ace", 'a', 0, 1, 5);
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TEST ("ace", 'b', 1, 1, 4);
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TEST ("ace", 'c', 1, 2, 4);
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TEST ("ace", 'd', 2, 2, 4);
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TEST ("ace", 'e', 2, 3, 4);
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TEST ("ace", 'f', 3, 3, 4);
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TEST ("aceg", 'a', 0, 1, 6);
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TEST ("aceg", 'b', 1, 1, 5);
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TEST ("aceg", 'c', 1, 2, 5);
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TEST ("aceg", 'd', 2, 2, 5);
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TEST ("aceg", 'e', 2, 3, 5);
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TEST ("aceg", 'f', 3, 3, 5);
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TEST ("aceg", 'g', 3, 4, 5);
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TEST ("aceg", 'h', 4, 4, 5);
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}
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/**************************************************************************/
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static int rw_opt_no_fwd_iter;
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static int rw_opt_no_bidir_iter;
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static int rw_opt_no_rnd_iter;
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static int rw_opt_no_predicate;
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template <class T>
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void test_equal_range (const T*,
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bool predicate)
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{
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static const FwdIter<T> fwd_iter (0, 0, 0);
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static const BidirIter<T> bidir_iter (0, 0, 0);
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static const RandomAccessIter<T> rand_iter (0, 0, 0);
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rw_info (0, 0, 0, "template <class %s, class %s%{?}, class %s%{;}> "
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"std::pair<%1$s, %1$s> std::equal_range "
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"(%1$s, %1$s, const %2$s&%{?}, %s%{;})",
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"ForwardIterator", "UserClass", predicate, "Compare",
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predicate, "Compare");
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if (rw_opt_no_fwd_iter) {
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rw_note (0, 0, 0, "ForwardIterator test disabled");
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}
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else {
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test_equal_range (fwd_iter, (T*)0, predicate);
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}
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if (rw_opt_no_bidir_iter) {
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rw_note (0, 0, 0, "BidirectionalIterator test disabled");
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}
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else {
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test_equal_range (bidir_iter, (T*)0, predicate);
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}
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if (rw_opt_no_fwd_iter) {
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rw_note (0, 0, 0, "RandomAccessIterator test disabled");
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}
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else {
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test_equal_range (rand_iter, (T*)0, predicate);
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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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test_equal_range ((UserClass*)0, false);
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if (rw_opt_no_predicate) {
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rw_note (0, __FILE__, __LINE__,
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"test of the Predicate form of std::equal_range disabled");
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}
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else {
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test_equal_range ((UserClass*)0, true);
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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.equal.range",
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0 /* no comment */,
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run_test,
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"|-no-Predicate# "
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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_predicate,
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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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