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/* Copyright 2002 - 2016, The libsigc++ Development Team
* Assigned to public domain. Use as you wish without restriction.
*/
#include "testutilities.h"
#include <sigc++/trackable.h>
#include <sigc++/signal.h>
#include <sigc++/adaptors/compose.h>
// The Tru64 compiler seems to need this to avoid an unresolved symbol
// See bug #161503
namespace
{
std::ostringstream result_stream;
int
foo(int i)
{
result_stream << "foo(" << i << ") ";
return 1;
}
int
bar(double i)
{
result_stream << "bar(" << i << ") ";
return 1;
}
struct A : public sigc::trackable
{
int foo(int i)
{
result_stream << "A::foo(" << i << ") ";
return 1;
}
};
void
good_bye_world()
{
result_stream << "Good bye world!";
}
struct B : public sigc::trackable
{
B()
{
sig.connect(sigc::mem_fun(*this, &B::destroy));
sig.connect(sigc::mem_fun(*this, &B::boom));
sig.connect(sigc::ptr_fun(&good_bye_world));
}
void destroy() // Calling destroy() during signal emission seems weird!
{ // However, if this works, anything will work!
delete this; // valgrind reports a small memory leak, that's all.
}
void boom() { result_stream << "boom!"; }
void emit() { sig.emit(); }
sigc::signal<void()> sig;
};
} // end anonymous namespace
int
main(int argc, char* argv[])
{
auto util = TestUtilities::get_instance();
if (!util->check_command_args(argc, argv))
return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
sigc::signal<int(int)> sig;
sigc::connection confoo;
sigc::connection conbar;
sigc::connection cona; // connection objects are safe to use beyond the life time of a signal.
{
A a;
sig.connect(sigc::mem_fun(a, &A::foo));
confoo = sig.connect(sigc::ptr_fun(&foo));
conbar = sig.connect(sigc::ptr_fun(&bar));
result_stream << "sig is connected to A::foo, foo, bar (size=" << sig.size() << "): ";
sig(1);
util->check_result(
result_stream, "sig is connected to A::foo, foo, bar (size=3): A::foo(1) foo(1) bar(1) ");
} // auto disconnection! iterators stay valid after disconnections.
result_stream << "sig is connected to foo, bar (size=" << sig.size() << "): ";
sig(2);
util->check_result(result_stream, "sig is connected to foo, bar (size=2): foo(2) bar(2) ");
A a; // iterators stay valid after further connections.
cona = sig.connect(sigc::mem_fun(a, &A::foo));
result_stream << "sig is connected to foo, A::foo, bar (size=" << sig.size() << "): ";
sig(3);
util->check_result(
result_stream, "sig is connected to foo, A::foo, bar (size=3): foo(3) bar(3) A::foo(3) ");
conbar.disconnect(); // manual disconnection
result_stream << "sig is connected to foo, A::foo (size=" << sig.size() << "): ";
sig(4);
util->check_result(result_stream, "sig is connected to foo, A::foo (size=2): foo(4) A::foo(4) ");
confoo.disconnect(); // manual disconnection
result_stream << "sig is connected to A::foo (size=" << sig.size() << "): ";
sig(5);
util->check_result(result_stream, "sig is connected to A::foo (size=1): A::foo(5) ");
cona.disconnect(); // manual disconnection
result_stream << "sig is empty (size=" << sig.size() << "): ";
sig(6);
util->check_result(result_stream, "sig is empty (size=0): ");
cona.disconnect(); // already disconnected -> legal with connection objects, however, nothing
// happens ...
{
A a2;
sig.connect(sigc::compose(sigc::mem_fun(a2, &A::foo), &foo));
result_stream << "sig is connected to compose(A::foo, foo) (size=" << sig.size() << "): ";
sig(7);
util->check_result(
result_stream, "sig is connected to compose(A::foo, foo) (size=1): foo(7) A::foo(1) ");
}
result_stream << "sig is empty (size=" << sig.size() << "): ";
sig(8);
util->check_result(result_stream, "sig is empty (size=0): ");
{ // A slot# within a slot
A a2;
sigc::slot<int(int)> setter = sigc::mem_fun(a2, &A::foo);
sig.connect(sigc::compose(setter, &foo));
result_stream << "sig is connected to compose(slot1(A::foo), foo) (size=" << sig.size()
<< "): ";
sig(9);
util->check_result(
result_stream, "sig is connected to compose(slot1(A::foo), foo) (size=1): foo(9) A::foo(1) ");
}
result_stream << "sig is empty (size=" << sig.size() << "): ";
sig(10);
util->check_result(result_stream, "sig is empty (size=0): ");
{ // A slot within a slot
A a2;
sigc::slot<int(int)> setter = sigc::mem_fun(a2, &A::foo);
sig.connect(sigc::compose(setter, &foo));
result_stream << "sig is connected to compose(slot(A::foo), foo) (size=" << sig.size() << "): ";
sig(11);
util->check_result(
result_stream, "sig is connected to compose(slot(A::foo), foo) (size=1): foo(11) A::foo(1) ");
}
result_stream << "sig is empty (size=" << sig.size() << "): ";
sig(12);
util->check_result(result_stream, "sig is empty (size=0): ");
result_stream << "deleting a signal during emission... ";
auto b = new B; // This is deleted by B::destroy().
b->emit();
util->check_result(result_stream, "deleting a signal during emission... Good bye world!");
return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
}
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