public Lambda(Expression expr, Environment environment)
: base("anonymous", environment.CurrentScope)
{
_environment = environment;
_formalParameters = new FormalParameters(expr.Elements.Second());
Precondition = args => args.Count() == _formalParameters.Count;
Implementation = args => expr.Elements.Skip(2).Evaluate(_environment.CurrentScope);
}
public Macro(
string symbol,
ListExpression formalParams,
IEnumerable<Expression> body,
Environment environment)
: base(new Token(Tokens.MACRO, symbol))
{
_formalParams = new FormalParameters(formalParams);
_body = body;
_environment = environment;
_scope = _environment.CurrentScope;
}
