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// Boost.Signals library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is subject to the Boost Software License, Version
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// For more information, see http://www.boost.org
#include <boost/test/minimal.hpp>
#include <boost/signal.hpp>
#include <functional>
#include <iostream>
template<typename T>
struct max_or_default {
typedef T result_type;
template<typename InputIterator>
typename InputIterator::value_type
operator()(InputIterator first, InputIterator last) const
{
if (first == last)
return T();
T max = *first++;
for (; first != last; ++first)
max = (*first > max)? *first : max;
return max;
}
};
struct make_int {
make_int(int n, int cn) : N(n), CN(cn) {}
int operator()() { return N; }
int operator()() const { return CN; }
int N;
int CN;
};
template<int N>
struct make_increasing_int {
make_increasing_int() : n(N) {}
int operator()() const { return n++; }
mutable int n;
};
static void
test_zero_args()
{
make_int i42(42, 41);
make_int i2(2, 1);
make_int i72(72, 71);
make_int i63(63, 63);
make_int i62(62, 61);
{
boost::signal<int (), max_or_default<int> > s0;
std::cout << "sizeof(signal) = " << sizeof(s0) << std::endl;
boost::BOOST_SIGNALS_NAMESPACE::connection c2 = s0.connect(i2);
boost::BOOST_SIGNALS_NAMESPACE::connection c72 = s0.connect(72, i72);
boost::BOOST_SIGNALS_NAMESPACE::connection c62 = s0.connect(60, i62);
boost::BOOST_SIGNALS_NAMESPACE::connection c42 = s0.connect(i42);
BOOST_TEST(s0() == 72);
s0.disconnect(72);
BOOST_TEST(s0() == 62);
c72.disconnect(); // Double-disconnect should be safe
BOOST_TEST(s0() == 62);
s0.disconnect(72); // Triple-disconect should be safe
BOOST_TEST(s0() == 62);
// Also connect 63 in the same group as 62
s0.connect(60, i63);
BOOST_TEST(s0() == 63);
// Disconnect all of the 60's
s0.disconnect(60);
BOOST_TEST(s0() == 42);
c42.disconnect();
BOOST_TEST(s0() == 2);
c2.disconnect();
BOOST_TEST(s0() == 0);
}
{
boost::signal<int (), max_or_default<int> > s0;
boost::BOOST_SIGNALS_NAMESPACE::connection c2 = s0.connect(i2);
boost::BOOST_SIGNALS_NAMESPACE::connection c72 = s0.connect(i72);
boost::BOOST_SIGNALS_NAMESPACE::connection c62 = s0.connect(i62);
boost::BOOST_SIGNALS_NAMESPACE::connection c42 = s0.connect(i42);
const boost::signal<int (), max_or_default<int> >& cs0 = s0;
BOOST_TEST(cs0() == 72);
}
{
make_increasing_int<7> i7;
make_increasing_int<10> i10;
boost::signal<int (), max_or_default<int> > s0;
boost::BOOST_SIGNALS_NAMESPACE::connection c7 = s0.connect(i7);
boost::BOOST_SIGNALS_NAMESPACE::connection c10 = s0.connect(i10);
BOOST_TEST(s0() == 10);
BOOST_TEST(s0() == 11);
}
}
static void
test_one_arg()
{
boost::signal<int (int value), max_or_default<int> > s1;
s1.connect(std::negate<int>());
s1.connect(std::bind1st(std::multiplies<int>(), 2));
BOOST_TEST(s1(1) == 2);
BOOST_TEST(s1(-1) == 1);
}
static void
test_signal_signal_connect()
{
boost::signal<int (int value), max_or_default<int> > s1;
s1.connect(std::negate<int>());
BOOST_TEST(s1(3) == -3);
{
boost::signal<int (int value), max_or_default<int> > s2;
s1.connect(s2);
s2.connect(std::bind1st(std::multiplies<int>(), 2));
s2.connect(std::bind1st(std::multiplies<int>(), -3));
BOOST_TEST(s2(-3) == 9);
BOOST_TEST(s1(3) == 6);
} // s2 goes out of scope and disconnects
BOOST_TEST(s1(3) == -3);
}
int
test_main(int, char* [])
{
test_zero_args();
test_one_arg();
test_signal_signal_connect();
return 0;
}
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