internal static Completion IteratorBindingInitializationBindingRestIdentifier(Identifier restParameterIdentifier, LexicalEnvironment?env, ArgumentIterator arguments)
{
var lhsComp = Interpreter.Instance().ResolveBinding(restParameterIdentifier.name, restParameterIdentifier.IsStrictMode, env);
if (lhsComp.IsAbrupt())
{
return(lhsComp);
}
var lhs = (lhsComp.value as ReferenceValue) !;
var A = ArrayObject.ArrayCreate(0);
int n = 0;
for (; ; n++)
{
if (arguments.Done)
{
if (env == null)
{
return(lhs.PutValue(A));
}
return(lhs.InitializeReferencedBinding(A));
}
var nextValue = arguments.Next();
var status = Utils.CreateDataProperty(A, n.ToString(System.Globalization.CultureInfo.InvariantCulture), nextValue);
if (!status.Other)
{
throw new InvalidOperationException("BindingRestElement IteratorBindingInitialization: assert step 4g");
}
}
}
internal static Completion IteratorBindingInitializationSingleNameBinding(Identifier identifier, AbstractAssignmentExpression?initializer, LexicalEnvironment?env, ArgumentIterator arguments)
{
var lhsComp = Interpreter.Instance().ResolveBinding(identifier.name, identifier.IsStrictMode, env);
if (lhsComp.IsAbrupt())
{
return(lhsComp);
}
var lhs = (lhsComp.value as ReferenceValue) !;
IValue v;
if (!arguments.Done)
{
v = arguments.Next();
}
else
{
v = UndefinedValue.Instance;
}
if (initializer != null && v == UndefinedValue.Instance)
{
if (initializer is FunctionExpression f && f.isAnonymous)
{
var comp = f.NamedEvaluate(Interpreter.Instance(), identifier.name);
if (comp.IsAbrupt())
{
return(comp);
}
v = comp.value !;
}
else
{
var comp = initializer.Evaluate(Interpreter.Instance()).GetValue();
if (comp.IsAbrupt())
{
return(comp);
}
v = comp.value !;
}
}