# Author: Enric Tejedor CERN  11/2018

################################################################################
# Copyright (C) 1995-2019, Rene Brun and Fons Rademakers.                      #
# All rights reserved.                                                         #
#                                                                              #
# For the licensing terms see $ROOTSYS/LICENSE.                                #
# For the list of contributors see $ROOTSYS/README/CREDITS.                    #
################################################################################

r'''
/**
\class TArray
\brief \parblock \endparblock
\htmlonly
<div class="pyrootbox">
\endhtmlonly
## PyROOT

When used from Python, the subclasses of TArray (TArrayC, TArrayS, TArrayI, TArrayL, TArrayF and TArrayD) benefit from the following extra features:

- Their size can be obtained with `len`, which is equivalent to TArray::GetSize():
\code{.py}
import ROOT

a = ROOT.TArrayD(2)
print(len(a)) # prints '2'
\endcode

- Their elements can be read and written with the `getitem` and `setitem` operators, respectively:
\code{.py}
a[0] = 0.2
a[1] = 1.7
print(a[0]) # prints '0.2'
\endcode

- They are iterable:
\code{.py}
for elem in a:
    print(elem)
\endcode
\htmlonly
</div>
\endhtmlonly
*/
'''

from . import pythonization

from ._generic import _add_getitem_checked


@pythonization("TArray", is_prefix=True)
def pythonize_tarray(klass, name):
    # Parameters:
    # klass: class to be pythonized
    # name: string containing the name of the class

    if name == 'TArray':
        # Support `len(a)` as `a.GetSize()`
        klass.__len__ = klass.GetSize
    else:
        # Add checked __getitem__. It has to be directly added to the TArray
        # subclasses, which have a default __getitem__.
        # The new __getitem__ allows to throw pythonic IndexError when index
        # is out of range and to iterate over the array.
        _add_getitem_checked(klass)
