/// <summary>
/// Instantiate new PHP array's enumerator and advances its position to the first element.
/// </summary>
/// <returns><c>True</c> whether there is an first element.</returns>
void InitArrayIteratorHelper()
{
Debug.Assert(_array != null);
_arrayEnumerator = new OrderedDictionary.Enumerator(_array);
_isValid = _arrayEnumerator.MoveFirst();
}
/// <summary>
/// Copy constructor. Creates <see cref="PhpArray"/> that shares internal data table with another <see cref="PhpArray"/>.
/// </summary>
/// <param name="array">Table to be shared.</param>
/// <param name="preserveMaxInt">True to copy the <see cref="PhpHashtable.MaxIntegerKey"/> from <paramref name="array"/>.
/// Otherwise the value will be recomputed when needed. See http://phalanger.codeplex.com/workitem/31484 for more details.</param>
public PhpArray(PhpArray /*!*/ array, bool preserveMaxInt)
: base(array, preserveMaxInt)
{
// preserve intrinsic enumerator state
_intrinsicEnumerator = array._intrinsicEnumerator?.WithTable(this); // copies state of intrinsic enumerator or null
}
/// <summary>
/// Instantiate new PHP array's enumerator and advances its position to the first element.
/// </summary>
/// <returns><c>True</c> whether there is an first element.</returns>
protected void InitArrayIteratorHelper()
{
Debug.Assert(this.array != null);
this.arrayEnumerator = new OrderedDictionary.Enumerator(this.array, false);
this.isValid = this.arrayEnumerator.MoveFirst();
}
/// <summary>
/// Creates a new instance of the enumerator.
/// </summary>
/// <param name="array">The array to iterate over.</param>
public ForeachEnumeratorValues(PhpArray/*!*/ array)
{
Debug.Assert(array != null);
// share the table to iterate through readonly array,
// get the enumerator, have to be disposed at the end of enumeration, otherwise deep copy will be performed probably
// note (J): this will not result in registering the enumerator in the PhpArray object, not needed, faster
this.enumerator = (OrderedDictionary.Enumerator)array.table.Share().GetEnumerator();
}
/// <summary>
/// Creates a new instance of the enumerator.
/// </summary>
/// <param name="array">The array to iterate over.</param>
/// <param name="keyed">Whether keys are interesting.</param>
public ForeachEnumeratorAliased(PhpArray/*!*/ array, bool keyed)
{
Debug.Assert(array != null);
this.array = array;
this.enumerator = new OrderedDictionary.Enumerator(array, true);
// ForeachEnumeratorAliased can leave an undisposed enumerator registered in the array object
// (only in case a break; was called inside an aliased foreach loop).
}
