public object ApplyDefMacro(IList<object> arguments, Environment environment)
{
if (arguments.Count != 3)
{
throw new ArgumentException("Wrong number of arguments given to defmacro! Expected: " + 3);
}
var symbol = arguments.ElementAt(0) as SymbolNode;
if (symbol == null)
{
throw new ArgumentException("First argument to defmacro not a symbol!");
}
var parameterList = arguments.ElementAt(1) as IList<object>;
if (parameterList == null)
{
throw new ArgumentException("Second argument to defmacro not a parameterlist!");
}
var body = arguments.ElementAt(2);
var macro = new ProcedureNode(parameterList.Cast<SymbolNode>(), new[] { body }, environment.CreateChildEnvironment(), true);
environment.DefineSymbol(symbol, macro);
return symbol;
}
public object ApplyDef(IList<object> arguments, Environment environment)
{
if (arguments.Count != 2)
{
throw new ArgumentException("Wrong number of arguments given to def! Expected: " + 2);
}
var symbol = arguments.ElementAt(0) as SymbolNode;
if (symbol == null)
{
throw new ArgumentException("First argument to def not a symbol!");
}
var valueForm = arguments.ElementAt(1);
var result = evaluator.Evaluate(valueForm, environment);
environment.DefineSymbol(symbol, result);
return symbol;
}