/*
* Copyright (c), Zeriph Enterprises
* All rights reserved.
*
* Contributor(s):
* Zechariah Perez, omni (at) zeriph (dot) com
*
* THIS SOFTWARE IS PROVIDED BY ZERIPH AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ZERIPH AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(OMNI_PROPERTY_HPP)
#define OMNI_PROPERTY_HPP 1
#include <omni/defs/class_macros.hpp>
#include <omni/delegate/0.hpp>
#include <omni/delegate/1.hpp>
#include <omni/defs/consts.hpp>
#if defined(OMNI_SAFE_PROP)
#include <omni/sync/scoped_lock.hpp>
#define OMNI_SAFE_PROP_MTX_FW mutable OMNI_MUTEX_T m_mtx;
#define OMNI_SAFE_PROP_MILST_FW m_mtx(),
#define OMNI_SAFE_PROP_INIT_FW omni::sync::mutex_init(this->m_mtx);
#define OMNI_SAFE_PROP_DTOR_FW omni::sync::mutex_destroy(this->m_mtx);
#define OMNI_SAFE_PROP_LOCK_FW omni::sync::mutex_lock(this->m_mtx);
#define OMNI_SAFE_PROP_UNLOCK_FW omni::sync::mutex_unlock(this->m_mtx);
#define OMNI_SAFE_PROP_ALOCK_FW omni::sync::scoped_lock<omni::sync::mutex_t> auto_mtx(&this->m_mtx);
#else
#define OMNI_SAFE_PROP_MTX_FW
#define OMNI_SAFE_PROP_MILST_FW
#define OMNI_SAFE_PROP_INIT_FW
#define OMNI_SAFE_PROP_DTOR_FW
#define OMNI_SAFE_PROP_LOCK_FW
#define OMNI_SAFE_PROP_UNLOCK_FW
#define OMNI_SAFE_PROP_ALOCK_FW
#endif
namespace omni {
template <
typename T >
class property
{
public:
typedef T value_t;
typedef omni::delegate<value_t> get;
typedef omni::delegate1<
void, value_t> set;
typedef property<value_t> property_t;
property() :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(), m_set(), m_val()
{
OMNI_SAFE_PROP_INIT_FW
this->m_get.
template bond_const<property_t, &property_t::_get>(*
this);
this->m_set.
template bond<property_t, &property_t::_set>(*
this);
}
property(value_t val) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(), m_set(), m_val(val)
{
OMNI_SAFE_PROP_INIT_FW
this->m_get.
template bond_const<property_t, &property_t::_get>(*
this);
this->m_set.
template bond<property_t, &property_t::_set>(*
this);
}
property(get gfn) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(gfn), m_set(), m_val()
{
OMNI_SAFE_PROP_INIT_FW
this->m_set.
template bond<property_t, &property_t::_set>(*
this);
}
property(set sfn) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(), m_set(sfn), m_val()
{
OMNI_SAFE_PROP_INIT_FW
this->m_get.
template bond_const<property_t, &property_t::_get>(*
this);
}
property(get gfn, value_t val) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(gfn), m_set(), m_val(val)
{
OMNI_SAFE_PROP_INIT_FW
this->m_set.
template bond<property_t, &property_t::_set>(*
this);
}
property(set sfn, value_t val) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(), m_set(sfn), m_val()
{
OMNI_SAFE_PROP_INIT_FW
this->m_get.
template bond_const<property_t, &property_t::_get>(*
this);
this->m_set(val);
}
property(get gfn, set sfn) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(gfn), m_set(sfn), m_val()
{
OMNI_SAFE_PROP_INIT_FW
}
property(get gfn, set sfn, value_t val) :
OMNI_CTOR_FW(
omni::property<T>)
OMNI_SAFE_PROP_MILST_FW
m_get(gfn), m_set(sfn), m_val()
{
OMNI_SAFE_PROP_INIT_FW
this->m_set(val);
}
property(
const omni::
template property<T> &cp) :
OMNI_CPCTOR_FW(cp)
OMNI_SAFE_PROP_MILST_FW
m_get(cp.m_get), m_set(cp.m_set), m_val(cp.m_val)
{
OMNI_SAFE_PROP_INIT_FW
}
~property()
{
OMNI_TRY_FW
OMNI_DTOR_FW
OMNI_SAFE_PROP_DTOR_FW
OMNI_CATCH_FW
}
void bind_get(get gfn)
{
OMNI_SAFE_PROP_ALOCK_FW
this->m_get = gfn;
}
void bind_set(set sfn)
{
OMNI_SAFE_PROP_ALOCK_FW
this->m_set = sfn;
}
// Operators - get (rval)
operator value_t() {
return this->_vget(); }
operator value_t()
const {
return this->_vget(); }
value_t
operator()() {
return this->_vget(); }
value_t
operator()()
const {
return this->_vget(); }
/* DEV_NOTE: you might get compiler warnings about property<T> need return
property<T>& for ++/-- post/pre inc/dec, or that we 'should' overload 'operator=', but
note that we specifically don't overload the operator=(property_t) so as all rval's
to this instance 'should' be of 'value_t' types, example:
// overloading the operator= here would give us an implicit cast to a property<int>
property<int> t = 10;
int i = t--;
// here i == 10 and t == 9
int x = --t;
// here both x and t == 8 */
&omninobr;
// Operators - set (lval)
value_t
operator++() {
// pre increment
value_t tmp =
this->_vget();
this->_vset(++tmp);
return tmp;
}
value_t
operator--() {
// pre decrement
value_t tmp =
this->_vget();
this->_vset(--tmp);
return tmp;
}
value_t
operator++(
int) {
// post increment
value_t tmp =
this->_vget();
value_t t2 = tmp;
this->_vset(++t2);
return tmp;
}
value_t
operator--(
int) {
// post decrement
value_t tmp =
this->_vget();
value_t t2 = tmp;
this->_vset(--t2);
return tmp;
}
property_t&
operator=(value_t val) {
this->_vset(val);
return *
this;
}
property_t&
operator+=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp + val);
return *
this;
}
property_t&
operator-=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp - val);
return *
this;
}
property_t&
operator*=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp * val);
return *
this;
}
property_t&
operator/=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp / val);
return *
this;
}
property_t&
operator%=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp % val);
return *
this;
}
property_t&
operator&=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp & val);
return *
this;
}
property_t&
operator|=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp | val);
return *
this;
}
property_t&
operator^=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp ^ val);
return *
this;
}
property_t&
operator<<=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp << val);
return *
this;
}
property_t&
operator>>=(value_t val) {
value_t tmp =
this->_vget();
this->_vset(tmp >> val);
return *
this;
}
OMNI_MEMBERS_FW(
omni::property<T>)
// disposing,name,type(),hash()
private:
value_t _vget()
const {
OMNI_SAFE_PROP_ALOCK_FW
return this->m_get();
}
void _vset(value_t value) {
OMNI_SAFE_PROP_ALOCK_FW
this->m_set(value);
}
value_t _get()
const {
return this->m_val; }
void _set(value_t value) {
this->m_val = value; }
OMNI_SAFE_PROP_MTX_FW
get m_get;
set m_set;
value_t m_val;
};
// TODO: getter/setter?
/* example:
class test {
public:
omni::property_get<int> x;
omni::property_set<int> p;
test(int _x) :
x(), p(), m_x(_x)
{
this->x.bind(omni::property_get<int>::delegate::bond<test, &test::_get_x>(*this));
this->p.bind(omni::property_set<int>::delegate::bond<test, &test::_set_x>(*this));
or
this->x.bind<test, &test::_get_x>(*this);
this->p.bind<test, &test::_set_x>(*this);
}
private:
int m_x;
int _get_x()
{
return this->m_x;
}
void _set_x(int _x)
{
this->m_x = _x;
}
};
then using:
test t(10);
int x = t.x; // OK, x = t.x causes a 'get'
t.p = 42; // OK, t.p = x causes a 'set'
t.x = 42; // compiler fail, causes a 'set' and there are no 'set' functions
int p = t.p; // compiler fail, causes a 'get' and there are no 'get' functions
*/
}
#endif // OMNI_PROPERTY_HPP
