/// <summary>
/// Initializes a new instance of the <see cref="Closure"/> class.
/// </summary>
/// <param name="script">The script.</param>
/// <param name="idx">The index.</param>
/// <param name="resolvedLocals">The resolved locals.</param>
internal Closure(Script script, int idx, ClosureRefValue[] resolvedLocals)
{
isAlive = true;
OwnerScript = script;
EntryPointByteCodeLocation = idx;
ClosureContext = new ClosureContext(resolvedLocals);
script.RegisterClosure(this);
}
/// <summary>
/// Initializes a new instance of the <see cref="Closure"/> class.
/// </summary>
/// <param name="script">The script.</param>
/// <param name="idx">The index.</param>
/// <param name="symbols">The symbols.</param>
/// <param name="resolvedLocals">The resolved locals.</param>
internal Closure(Script script, int idx, SymbolRef[] symbols, IEnumerable <DynValue> resolvedLocals)
{
OwnerScript = script;
EntryPointByteCodeLocation = idx;
if (symbols.Length > 0)
{
ClosureContext = new ClosureContext(symbols, resolvedLocals);
}
else
{
ClosureContext = emptyClosure;
}
}
public override Value Evaluate()
{
Value value = block.Evaluate();
if (value.IsNil)
{
return(null);
}
switch (type)
{
case "return":
Runtime.State.ReturnSignal = true;
Runtime.State.ReturnValue = value;
return(value);
case "exit":
if (value.IsEmpty || value.IsTrue)
{
Runtime.State.ExitSignal = true;
}
return(null);
case "continue":
if (value.IsEmpty || value.IsTrue)
{
Runtime.State.SkipSignal = true;
}
return(null);
case "yield":
IStringify stringify;
if (value.IsA(out stringify))
{
value = stringify.String;
}
ClosureContext context = Runtime.State.ClosureContext;
if (context == null)
{
return(value);
}
ArrayYielder yielder = context.Yielder;
yielder.Add(value.Resolve());
return(value);
}
return(null);
}
