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");
}
}
}
public static ArrayObject ArrayCreate(double lengthInteger, Object?proto = null)
{
var length = (int)lengthInteger;
if (proto == null)
{
proto = Interpreter.Instance().CurrentRealm().Intrinsics.ArrayPrototype;
}
var A = new ArrayObject();
A.prototype = proto;
A.IsExtensible = true;
A.OrdinaryDefineOwnProperty("length", new PropertyDescriptor(new NumberValue(length), true, false, false));
return(A);
}
private static Completion RegExpBuiltinExec(RegExpObject R, string S)
{
var length = S.Length;
int lastIndex;
{
var lastIndexComp = R.Get("lastIndex");
if (lastIndexComp.IsAbrupt())
{
return(lastIndexComp);
}
var lastIndexLength = lastIndexComp.value !.ToLength();
if (lastIndexLength.IsAbrupt())
{
return(lastIndexLength);
}
lastIndex = (int)lastIndexLength.Other;
}
var flags = R.OriginalFlags;
var global = flags.Contains('g', StringComparison.Ordinal);
var sticky = flags.Contains('y', StringComparison.Ordinal);
if (!global && !sticky)
{
lastIndex = 0;
}
var matcher = R.RegExpMatcher;
var fullUnicode = flags.Contains('u', StringComparison.Ordinal);
var matchSucceeded = false;
Match?r = null;
while (!matchSucceeded)
{
if (lastIndex > length)
{
if (global || sticky)
{
var set = R.Set("lastIndex", NumberValue.PositiveZero, true);
if (set.IsAbrupt())
{
return(set);
}
}
return(Completion.NormalCompletion(NullValue.Instance));
}
r = matcher.Match(S, lastIndex);
if (!r.Success)
{
if (sticky)
{
var set = R.Set("lastIndex", NumberValue.PositiveZero, true);
if (set.IsAbrupt())
{
return(set);
}
return(Completion.NormalCompletion(NullValue.Instance));
}
lastIndex = AdvanceStringIndex(S, lastIndex, fullUnicode);
}
else
{
matchSucceeded = true;
}
}
var e = r !.Index + r.Length;
if (fullUnicode)
{
// e is an index into the Input character list, derived from S, matched by matcher.
// Let eUTF be the smallest index into S that corresponds to the character at element e of Input.
// If e is greater than or equal to the number of elements in Input, then eUTF is the number of code units in S.
// Set e to eUTF.
var indexes = StringInfo.ParseCombiningCharacters(S);
if (r.Index < indexes.Length)
{
var sub = StringInfo.GetNextTextElement(S, r.Index);
e += sub.Length - 1;
}
}
if (global || sticky)
{
var set = R.Set("lastIndex", new NumberValue(e), true);
if (set.IsAbrupt())
{
return(set);
}
}
var n = r.Groups.Count;
var A = ArrayObject.ArrayCreate(n + 1);
Utils.CreateDataProperty(A, "index", new NumberValue(lastIndex));
Utils.CreateDataProperty(A, "input", new StringValue(S));
Utils.CreateDataProperty(A, "0", new StringValue(r.Value));
IValue groups;
if (R.RegExpMatcher.GetGroupNames().Any())
{
groups = Utils.ObjectCreate(null);
}
else
{
groups = UndefinedValue.Instance;
}
Utils.CreateDataProperty(A, "groups", groups);
for (int i = 0; i <= n; i++)
{
var captureI = r.Groups[i];
IValue capturedValue;
if (captureI.Success)
{
if (fullUnicode)
{
capturedValue = new StringValue(StringInfo.GetNextTextElement(S, captureI.Index));
}
else
{
capturedValue = new StringValue(captureI.Value);
}
}
else
{
capturedValue = UndefinedValue.Instance;
}
Utils.CreateDataProperty(A, i.ToString(CultureInfo.InvariantCulture), capturedValue);
if (!string.IsNullOrEmpty(captureI.Name))
{
Utils.CreateDataProperty(groups, captureI.Name, capturedValue);
}
}
return(Completion.NormalCompletion(A));
}
public override Completion InternalConstruct(IReadOnlyList <IValue> arguments, Object?newTarget)
{
if (newTarget == null)
{
newTarget = this;
}
var proto = Utils.GetPrototypeFromConstructor(newTarget, i => i.ArrayPrototype);
if (proto.IsAbrupt())
{
return(proto);
}
if (arguments.Count == 0)
{
return(Completion.NormalCompletion(ArrayObject.ArrayCreate(0, proto.value as Object)));
}
else if (arguments.Count == 1)
{
var array = ArrayObject.ArrayCreate(0, proto.value as Object);
int intLen;
if (!(arguments[0] is NumberValue))
{
var defineStatus = Utils.CreateDataProperty(array, "0", arguments[0]);
if (!defineStatus.Other)
{
throw new InvalidOperationException("CreateDataProperty [0] in array constructor failed. Spec 22.1.1.2 step 6b");
}
intLen = 1;
}
else
{
intLen = (int)(arguments[0] as NumberValue) !.number;
if (intLen != (arguments[0] as NumberValue) !.number || intLen < 0)
{
return(Completion.ThrowRangeError("length argument cannot be used as a length"));
}
}
array.Set("length", new NumberValue(intLen), true);
return(Completion.NormalCompletion(array));
}
else
{
var array = ArrayObject.ArrayCreate(arguments.Count, proto.value as Object);
int k = 0;
foreach (var arg in arguments)
{
var defineStatus = Utils.CreateDataProperty(array, k.ToString(System.Globalization.CultureInfo.InvariantCulture), arg);
if (!defineStatus.Other)
{
throw new InvalidOperationException("CreateDataProperty in array constructor failed. Spec 22.1.1.3 step 8d");
}
k++;
}
if ((array.Get("length").value as NumberValue) !.number != arguments.Count)
{
throw new InvalidOperationException("array length is invalid. Spec 22.1.1.3 step 9");
}
return(Completion.NormalCompletion(array));
}
}
