public object VisitCall(Expr.Call expr)
{
var callee = Evaluate(expr.Callee);
// Assuming 'Select' is left-to-right, we'll evaluate arguments left-to-right.
// In C, this is undefined, so... /shrug.
var arguments = expr.Arguments
.Select(arg => Evaluate(arg))
.ToList();
var callable = callee as ILoxCallable;
if (callable != null)
{
// JavaScript discards extra arguments and sets missing ones to 'undefined'. We'll be stricter.
if (arguments.Count != callable.Arity)
{
throw new RuntimeError(expr.Paren,
string.Format("Expected {0} arguments but got {1}",
callable.Arity, arguments.Count));
}
return(callable.Call(this, arguments));
}
else
{
throw new RuntimeError(expr.Paren, "Can only call functions and classes");
}
}
public object VisitCallExpr(Expr.Call expr)
{
var callee = Evaluate(expr.Callee);
var arguments = new List <object>();
expr.Arguments.ForEach((e) =>
{
arguments.Add(Evaluate(e));
});
if (!(callee is ILoxCallable))
{
throw new RuntimeError(expr.Paren, "Can only call functions and classes.");
}
var function = callee as ILoxCallable;
if (arguments.Count != function.Arity)
{
throw new RuntimeError(expr.Paren, $"Expected {function.Arity} arguments but got {arguments.Count}.");
}
return(function.Call(this, arguments));
}
object Expr.IVisitor <object> .VisitCallExpr(Expr.Call expr)
{
object callee = Evaluate(expr.callee);
List <object> arguments = new List <object>();
foreach (Expr argument in expr.arguments)
{
arguments.Add(Evaluate(argument));
}
if (!(callee is LoxCallable))
{
throw new RuntimeError(expr.paren, "Can only call functions and classes.");
}
LoxCallable function = (LoxCallable)callee;
if (arguments.Count != function.Arity())
{
throw new RuntimeError(expr.paren, "Expected " +
function.Arity() + " arguments but got " +
arguments.Count + ".");
}
return(function.Call(this, arguments));
}
public object VisitCallExpr(Expr.Call expr)
{
Resolve(expr.Callee);
expr.Arguments.ForEach(e => Resolve(e));
return(null);
}
public Unit VisitCall(Expr.Call call)
{
Resolve(call.Callee);
foreach (var arg in call.Arguments)
{
Resolve(arg);
}
return(Unit.Default);
}
public Void Visit(Expr.Call expr)
{
Resolve(expr.Callee);
foreach (var arg in expr.Arguments)
{
Resolve(arg);
}
return(Void.Instance);
}
object Expr.IVisitor <object> .VisitCallExpr(Expr.Call expr)
{
Resolve(expr.callee);
foreach (Expr argument in expr.arguments)
{
Resolve(argument);
}
return(null);
}
public string VisitCall(Expr.Call call)
{
var builder = new StringBuilder();
builder.Append("(call ");
builder.Append(call.Callee.Accept(this));
foreach (var arg in call.Arguments)
{
builder.Append(" ");
builder.Append(arg.Accept(this));
}
builder.Append(")");
return(builder.ToString());
}
public string VisitCallExpr(Expr.Call expr)
{
throw new NotImplementedException();
}