mkxp/binding-mri/disposable-binding.h

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/*
** disposable-binding.h
**
** This file is part of mkxp.
**
** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
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**
** mkxp 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 2 of the License, or
** (at your option) any later version.
**
** mkxp 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 mkxp. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DISPOSABLEBINDING_H
#define DISPOSABLEBINDING_H
#include "disposable.h"
#include "binding-util.h"
/* 'Children' are disposables that are disposed together
* with their parent. Currently this is only used by Viewport
* in RGSS1. */
inline void
disposableAddChild(VALUE disp, VALUE child)
{
VALUE children = rb_iv_get(disp, "children");
if (NIL_P(children))
{
children = rb_ary_new();
rb_iv_set(disp, "children", children);
}
/* Assumes children are never removed until destruction */
rb_ary_push(children, child);
}
inline void
disposableDisposeChildren(VALUE disp)
{
VALUE children = rb_iv_get(disp, "children");
if (NIL_P(children))
return;
ID dispFun = rb_intern("_mkxp_dispose_alias");
for (long i = 0; i < RARRAY_LEN(children); ++i)
rb_funcall2(rb_ary_entry(children, i), dispFun, 0, 0);
}
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template<class C>
RB_METHOD(disposableDispose)
{
RB_UNUSED_PARAM;
C *d = getPrivateData<C>(self);
if (!d)
return Qnil;
/* Nothing to do if already disposed */
if (d->isDisposed())
return Qnil;
if (rgssVer == 1)
disposableDisposeChildren(self);
d->dispose();
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return Qnil;
}
template<class C>
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RB_METHOD(disposableIsDisposed)
{
RB_UNUSED_PARAM;
C *d = getPrivateData<C>(self);
if (!d)
return Qtrue;
return rb_bool_new(d->isDisposed());
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}
template<class C>
static void disposableBindingInit(VALUE klass)
{
_rb_define_method(klass, "dispose", disposableDispose<C>);
_rb_define_method(klass, "disposed?", disposableIsDisposed<C>);
/* Make sure we always have access to the original method, even
* if it is overridden by user scripts */
if (rgssVer == 1)
rb_define_alias(klass, "_mkxp_dispose_alias", "dispose");
}
template<class C>
inline void
checkDisposed(VALUE self)
{
if (disposableIsDisposed<C>(0, 0, self) == Qtrue)
raiseDisposedAccess(self);
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}
#endif // DISPOSABLEBINDING_H