/// <summary>
/// Marks a variable as free so it can be reused later.
/// </summary>
/// <param name="local">Local variable to free.</param>
public void Free(LocalBuilder local)
{
if (local == null)
{
return;
}
List <LocalDesc> localList;
if (!_pool.TryGetValue(local.LocalType, out localList))
{
return;
}
LocalDesc descToFree = localList.FirstOrDefault(desc => desc.Local == local);
descToFree.Reserved = false;
}
/// <summary>
/// In private storage searches a free local variable with
/// the type specified. If no sutable variable is found it
/// allocates new variable. The variable is marked as
/// reserved and is returned.
/// </summary>
/// <param name="type">Demanded type of variable.</param>
public LocalBuilder Reserve(Type type)
{
List <LocalDesc> localList;
if (!_pool.TryGetValue(type, out localList))
{
localList = new List <LocalDesc>();
_pool.Add(type, localList);
}
LocalDesc descToReserve = localList.FirstOrDefault(desc => !desc.Reserved);
if (descToReserve == null)
{
descToReserve = new LocalDesc {
Local = _il.DeclareLocal(type)
};
localList.Add(descToReserve);
}
descToReserve.Reserved = true;
return(descToReserve.Local);
}
