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/********************* */
/*! \file listener.cpp
** \verbatim
** Top contributors (to current version):
** Tim King
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Output utility classes and functions
**
** Output utility classes and functions.
**/
#include "base/listener.h"
#include <list>
#include "base/cvc4_assert.h"
namespace CVC4 {
Listener::Listener(){}
Listener::~Listener(){}
ListenerCollection::ListenerCollection() : d_listeners() {}
ListenerCollection::~ListenerCollection() { Assert(empty()); }
ListenerCollection::iterator ListenerCollection::addListener(Listener* listener)
{
return d_listeners.insert(d_listeners.end(), listener);
}
void ListenerCollection::removeListener(iterator position) {
d_listeners.erase(position);
}
void ListenerCollection::notify() {
for(iterator i = d_listeners.begin(), iend = d_listeners.end(); i != iend;
++i)
{
Listener* listener = *i;
listener->notify();
}
}
bool ListenerCollection::empty() const { return d_listeners.empty(); }
ListenerCollection::Registration::Registration(
ListenerCollection* collection, Listener* listener)
: d_listener(listener)
, d_position()
, d_collection(collection)
{
d_position = d_collection->addListener(d_listener);
}
ListenerCollection::Registration::~Registration() {
d_collection->removeListener(d_position);
delete d_listener;
}
ListenerCollection::Registration* ListenerCollection::registerListener(
Listener* listener)
{
return new Registration(this, listener);
}
ListenerRegistrationList::ListenerRegistrationList()
: d_registrations()
{}
ListenerRegistrationList::~ListenerRegistrationList() {
clear();
}
void ListenerRegistrationList::add(
ListenerCollection::Registration* registration)
{
d_registrations.push_back(registration);
}
void ListenerRegistrationList::clear(){
typedef std::list<ListenerCollection::Registration*>::iterator iterator;
for(iterator i = d_registrations.begin(), iend = d_registrations.end();
i != iend; ++i)
{
ListenerCollection::Registration* current = *i;
delete current;
}
d_registrations.clear();
}
}/* CVC4 namespace */
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