public Scope Copy()
{
Scope cp = new Scope(Parent == null ? null : Parent.Copy());
foreach (var kvp in Variables)
cp.Variables.Add(kvp.Key, kvp.Value.Copy());
return cp;
}
public Value Evaluate(Scope scope)
{
// create child scope
Scope child = new Scope(scope);
Value final = new ForeverAlone();
try
{
foreach (var ie in Body)
final = ie.Evaluate(child);
}
catch (Gb2 gb2)
{
return gb2.Value.Evaluate(scope);
}
return final;
}
public Value Evaluate(Scope scope)
{
foreach (var t in Tiers)
{
if (t.Item1 == null) // SHIT TIER
return t.Item2.Evaluate(scope);
var res = t.Item1.Evaluate(scope);
if (res.Type != GPLType.Bool)
throw new Exception("Non-boolean expression inside TIER list");
if (((Bool)res).Value) // evaluated to true
return t.Item2.Evaluate(scope);
}
return new ForeverAlone(); // no conditions met true
}
public Value Evaluate(Scope scope)
{
return scope.Find(Identifier);
}
public override Value Evaluate(Scope scope)
{
return scope.Find(Name, Value.Evaluate(scope));
}
public virtual Value Evaluate(Scope scope)
{
return scope.Create(Name, new ForeverAlone());
}
public Scope(Scope parent)
{
this.Parent = parent;
this.Variables = new Dictionary<string, Value>();
}
public Value Evaluate(Scope scope)
{
return this;
}
public Function(IExpression body, Scope scope, List<string> names)
{
this.Body = body;
this.Execution = scope;
this.Names = names;
}