public SharpLoxCallable(IEnumerable <Token> parameters, Block body, LoxEnvironment closure)
{
_parameters = parameters.ToList();
_body = body;
_closure = closure;
Arity = _parameters.Count();
}
public object Call(Interpreter interpreter, IEnumerable <object> arguments)
{
var funcEnv = new LoxEnvironment {
Parent = _closure
};
foreach (var(token, arg) in _parameters.Zip(arguments, ValueTuple.Create))
{
funcEnv.Define(token.Lexeme, arg);
}
try
{
interpreter.ExecuteBlock(_body.Statements, funcEnv);
}
catch (ReturnValue returnValue)
{
return(returnValue.Value);
}
return(null !);
}