public static IToken Acquire(IToken arg0, IToken arg1, IToken arg2 = null)
{
var key = Tuple.Create(arg0, arg1, arg2);
if (Cache.TryGetValue(key, out var cached))
{
return(cached);
}
IToken x;
if (arg1 == null)
{
x = new ConsOperator(arg0, arg1);
}
else if (arg2 == null)
{
var a0 = AlienMessageParser.Reduce(arg0);
var a1 = AlienMessageParser.Reduce(arg1);
x = new ConsOperator(a0, a1);
}
else
{
x = ApOperator.Acquire(ApOperator.Acquire(arg2, arg0), arg1);
}
Cache[key] = x;
return(x);
}
private static IToken Acquire(IToken arg0, IToken arg1, IToken arg2)
{
var key = Tuple.Create(arg0, arg1, arg2);
if (Cache.TryGetValue(key, out var cached))
{
return(cached);
}
IToken x;
if (arg2 == null)
{
x = new CComb(arg0, arg1);
}
else
{
x = AlienMessageParser.Reduce(ApOperator.Acquire(ApOperator.Acquire(arg0, arg2), arg1));
}
Cache[key] = x;
return(x);
}