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/* ConditionEntry.cpp
Copyright (c) 2024-2025 by Peter van der Meer
Endless Sky is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
Endless Sky is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ConditionEntry.h"
using namespace std;
ConditionEntry::ConditionEntry(const string &name)
: name(name), value(0), providingEntry(nullptr)
{
}
const string &ConditionEntry::Name() const
{
return name;
}
const string ConditionEntry::NameWithoutPrefix() const
{
// If we have a provider, and that provider has a main-entry, then we have prefix.
if(providingEntry)
return name.substr(providingEntry->name.length());
// If we have no prefix, then return the name without prefix.
return name;
}
ConditionEntry::operator int64_t() const
{
// Prefixed provider; use the other function to get the value.
if(providingEntry)
return providingEntry->getFunction(*this);
// Named provider; use the local getFunction to get the value.
if(getFunction)
return getFunction(*this);
// This is not a provider, just return the value.
return value;
}
ConditionEntry &ConditionEntry::operator=(int64_t val)
{
// Set through prefixed provider, notify if the function is read/write.
if(providingEntry)
{
if(providingEntry->setFunction)
{
providingEntry->setFunction(*this, val);
NotifyUpdate(val);
}
}
// Set through named provider, notify if the function is read/write.
else if(getFunction)
{
if(setFunction)
{
setFunction(*this, val);
NotifyUpdate(val);
}
}
// Set value directly.
else
{
value = val;
NotifyUpdate(val);
}
return *this;
}
ConditionEntry &ConditionEntry::operator++()
{
// Reuse assignment and int64_t conversion operators.
return (*this) = (*this) + 1;
}
ConditionEntry &ConditionEntry::operator--()
{
// Reuse assignment and int64_t conversion operators.
return (*this) = (*this) - 1;
}
ConditionEntry &ConditionEntry::operator+=(int64_t val)
{
// Reuse assignment and int64_t conversion operators.
return (*this) = (*this) + val;
}
ConditionEntry &ConditionEntry::operator-=(int64_t val)
{
// Reuse assignment and int64_t conversion operators.
return (*this) = (*this) - val;
}
void ConditionEntry::ProvidePrefixed(function<int64_t(const ConditionEntry &)> getFunction)
{
this->getFunction = std::move(getFunction);
this->providingEntry = this;
}
void ConditionEntry::ProvidePrefixed(function<int64_t(const ConditionEntry &)> getFunction,
function<void(ConditionEntry &, int64_t)> setFunction)
{
ProvidePrefixed(getFunction);
this->setFunction = std::move(setFunction);
}
void ConditionEntry::ProvideNamed(function<int64_t(const ConditionEntry &)> getFunction)
{
this->getFunction = std::move(getFunction);
this->providingEntry = nullptr;
}
void ConditionEntry::ProvideNamed(function<int64_t(const ConditionEntry &)> getFunction,
function<void(ConditionEntry &, int64_t)> setFunction)
{
ProvideNamed(getFunction);
this->setFunction = std::move(setFunction);
}
void ConditionEntry::NotifyUpdate(uint64_t value)
{
// Subscribing is not implemented yet.
return;
}
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