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#include "LuaBindVM.h"
#include "LuaBindRef.h"
namespace LuaBind
{
UniversalRef::UniversalRef(LuaBind::VM* vm, RefMode mode)
: mRefID(LUA_NOREF)
, mMode(mode)
, mOwner(vm)
{
}
UniversalRef::~UniversalRef()
{
// 自动释放引用
}
UniversalRef::operator bool()
{
return (mRefID != LUA_NOREF);
}
void UniversalRef::UnRef()
{
if (mRefID == LUA_NOREF)
return;
VM* vm = mOwner;
if (!vm) return;
if (mMode == STRONG_REF)
{
RefTable& table = vm->GetStrongRefTable();
table.UnRef(mRefID);
mRefID = LUA_NOREF;
}
else if (mMode == WEAK_REF)
{
RefTable& table = vm->GetWeakRefTable();
table.UnRef(mRefID);
mRefID = LUA_NOREF;
}
}
void UniversalRef::SetRef(LuaBind::State& state, int idx)
{
assert(state.GetVM() == mOwner);
VM* vm = mOwner;
if (!vm) return;
if (mMode == STRONG_REF)
{
RefTable& table = vm->GetStrongRefTable();
mRefID = table.Ref(state, idx);
}
else if (mMode == WEAK_REF)
{
RefTable& table = vm->GetWeakRefTable();
mRefID = table.Ref(state, idx);
}
}
bool UniversalRef::PushRef(LuaBind::State& state)
{
assert(mRefID != LUA_NOREF);
VM* vm = mOwner;
if (!vm) return false;
if (mMode == STRONG_REF)
{
RefTable& table = vm->GetStrongRefTable();
table.PushRef(state, mRefID);
}
else if (mMode == WEAK_REF)
{
RefTable& table = vm->GetWeakRefTable();
table.PushRef(state, mRefID);
}
else
{
state.PushNil();
return false;
}
return true;
}
StrongRef::StrongRef(LuaBind::VM* vm)
: UniversalRef(vm, STRONG_REF)
{
}
WeakRef::WeakRef(LuaBind::VM* vm)
: UniversalRef(vm, WEAK_REF)
{
}
}
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