private static object GetItemEpilogue(object var, object key, GetItemKinds kind)
{
bool quiet = kind != GetItemKinds.Get;
// empty:
if (PhpVariable.IsEmpty(var))
{
/* silently returns null, see PHP specs, issue 22019 */
//if (!quiet) PhpException.Throw(PhpError.Notice, CoreResources.GetString("empty_used_as_array"));
return null;
}
// an item of a PhpArray (check inherited types):
PhpArray array;
if ((array = var as PhpArray) != null)
return array.GetArrayItem(key, quiet);
// object behaving as array:
DObject dobj = var as DObject;
if (dobj != null)
{
var realObject = dobj.RealObject;
if (realObject is Library.SPL.ArrayAccess)
return Library.SPL.PhpArrayObject.GetUserArrayItem(dobj, key, kind);
if (realObject is IList)
return GetListItem((IList)realObject, key, kind);
if (realObject is IDictionary)
return GetDictionaryItem((IDictionary)realObject, key, kind);
}
// warnings (DObject, scalar type):
/* silently returns null, see PHP specs, issue 22019 */
//PhpException.VariableMisusedAsArray(var, false);
return null;
}
private static object GetStringItemEpilogue(object var, string key, GetItemKinds kind)
{
bool quiet = kind != GetItemKinds.Get;
int index;
if (var == null)
return null;
// a character of a string:
if (var.GetType() == typeof(string))
return (CheckStringIndexRange(index = Convert.StringToInteger(key), ((string)var).Length, quiet)) ? ((string)var)[index].ToString() : null;
// a character of a PhpString:
if (var.GetType() == typeof(PhpString))
return (CheckStringIndexRange(index = Convert.StringToInteger(key), ((PhpString)var).Length, quiet)) ? ((PhpString)var).GetCharUnchecked(index).ToString() : null;
// a byte of a string of bytes:
if (var.GetType() == typeof(PhpBytes))
return (CheckStringIndexRange(index = Convert.StringToInteger(key), ((PhpBytes)var).Length, quiet)) ? new PhpBytes(new byte[] { ((PhpBytes)var)[index] }) : null;
return GetItemEpilogue(var, key, kind);
}
public static object GetItemExact(object var, string/*!*/ key, GetItemKinds kind, int hashcode)
{
Debug.Assert(!(var is PhpReference) && key != null);
if (var != null && var.GetType() == typeof(PhpArray)) // derived types checked in Epilogue
return ((PhpArray)var).GetArrayItemExact(key, kind != GetItemKinds.Get, hashcode);
return GetStringItemEpilogue(var, key, kind);
}
private static object GetItemEpilogue(object var, int key, GetItemKinds kind)
{
Debug.Assert(!(var is PhpReference));
Debug.Assert(var == null || var.GetType() != typeof(PhpArray));
// handle null reference:
if (var == null)
return null;
//
bool quiet = kind != GetItemKinds.Get;
// a character of a string:
if (var.GetType() == typeof(string))
return (CheckStringIndexRange(key, ((string)var).Length, quiet)) ? ((string)var)[key].ToString() : null;
// a character of a PhpString:
if (var.GetType() == typeof(PhpString))
return (CheckStringIndexRange(key, ((PhpString)var).Length, quiet)) ? ((PhpString)var).GetCharUnchecked(key).ToString() : null;
// a byte of a string of bytes:
if (var.GetType() == typeof(PhpBytes))
return (CheckStringIndexRange(key, ((PhpBytes)var).Length, quiet)) ? new PhpBytes(new byte[] { ((PhpBytes)var)[key] }) : null;
// general GetItem epilogue:
return GetItemEpilogue(var, (object)key, kind);
}
public static object GetItem(object var, int key, GetItemKinds kind)
{
Debug.Assert(!(var is PhpReference));
if (var != null && var.GetType() == typeof(PhpArray)) // derived types checked later in Epilogue
// an item of a PhpArray:
return ((PhpArray)var).GetArrayItem(key, kind != GetItemKinds.Get);
else
// the rest:
return GetItemEpilogue(var, key, kind);
}
public static object GetItem(object var, object key, GetItemKinds kind)
{
Debug.Assert(!(var is PhpReference) && !(key is PhpReference));
// an item of a PhpArray (fast check):
if (var != null && var.GetType() == typeof(PhpArray)) // derived types checked in Epilogue
return ((PhpArray)var).GetArrayItem(key, kind != GetItemKinds.Get);
else
return GetItemNonPhpArray(var, key, kind);
}
