public override void Eval(ExecutionEnvironment env)
{
if (condition.Eval(env).As <TurtBool>())
{
success.Eval(env);
}
else if (failure != null)
{
failure.Eval(env);
}
}
public override void Eval(ExecutionEnvironment env)
{
env.Frame.PushScope();
env.Frame.Scope.Type = ScopeType.LOOP;
var start = this.start.Eval(env).As <TurtInteger>().Value;
var end = this.end.Eval(env).As <TurtInteger>().Value;
var current = start;
var running = true;
while (running)
{
if (current == end)
{
running = false;
}
env.Frame.Scope[iterator.Ident] = current.Turt();
if (start < end)
{
current++;
}
else
{
current--;
}
try {
statement.Eval(env);
} catch (BreakException) {
break;
} catch (ContinueException) {
}
}
env.Frame.PopScope();
}
