public object Apply(Interpreter i, Pair args, Environment env)
{
string s1 = (string)List.First(args);
string s2 = (string)List.Second(args);
return(Boolean.Create(s1 == s2));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
long len = List.Length(args);
if (len < 2)
{
throw new System.Exception("= expects at least 2 arguments");
}
else
{
long currentInt = (long)args.Head;
Pair currentPair = (Pair)args.Tail;
while (currentPair != Pair.EmptyList)
{
long nextInt = (long)List.First(currentPair);
if (currentInt != nextInt)
{
return(Boolean.Create(false));
}
currentPair = (Pair)currentPair.Tail;
}
return(Boolean.Create(true));
}
}
public object Apply(Interpreter i, Pair args, Environment env)
{
Symbol s = (Symbol)List.First(args);
Symbol prop = (Symbol)List.Second(args);
return((s.Properties.Contains(prop)) ?
s.Properties[prop] : Boolean.Create(false));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
object o1 = List.First(args);
object o2 = List.Second(args);
return(Boolean.Create(
(o1 is long && o2 is long) ? (long)o1 == (long)o2 :
(o1 is Character && o2 is Character) ?
(Character)o1 == (Character)o2 : o1 == o2
));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
object n1 = List.First(args);
object n2 = List.Second(args);
if (n1 is long && n2 is long)
{
long i1 = (long)n1;
long i2 = (long)n2;
return(Boolean.Create(i1 < i2));
}
throw new System.Exception("Unrecognized <");
}
public object Apply(Interpreter i, Pair args, Environment env)
{
return(Boolean.Create(List.First(args) is Character));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
Symbol s = (Symbol)List.First(args);
return(Boolean.Create(s.IsGenSym()));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
int n = (int)List.First(args);
return(Boolean.Create(n == 0));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
object o = List.First(args);
return(Boolean.Create(o != Pair.EmptyList && o is Pair));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
return(Boolean.Create(List.First(args) == Pair.EmptyList));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
object o = List.First(args);
return(Boolean.Create(o == Boolean.TRUE || o == Boolean.FALSE));
}
public object Apply(Interpreter i, Pair args, Environment env)
{
return(Boolean.Create(List.First(args) == List.Second(args)));
}