/
TArray.py
180 lines (128 loc) · 4.79 KB
/
TArray.py
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# BSD 3-Clause License; see https://github.com/scikit-hep/uproot5/blob/main/LICENSE
"""
This module defines versionless models for ``TArray`` and its subclasses.
"""
from __future__ import annotations
import struct
from collections.abc import Sequence
import numpy
import uproot
_tarray_format1 = struct.Struct(">i")
class Model_TArray(uproot.model.Model, Sequence):
"""
A versionless :doc:`uproot.model.Model` for ``TArray`` and its subclasses.
These also satisfy Python's abstract ``Sequence`` protocol.
"""
def read_numbytes_version(self, chunk, cursor, context):
pass
def read_members(self, chunk, cursor, context, file):
if uproot._awkwardforth.get_forth_obj(context) is not None:
raise uproot.interpretation.objects.CannotBeForth()
if self.is_memberwise:
raise NotImplementedError(
f"""memberwise serialization of {type(self).__name__}
in file {self.file.file_path}"""
)
self._members["fN"] = cursor.field(chunk, _tarray_format1, context)
self._data = cursor.array(chunk, self._members["fN"], self.dtype, context)
def __array__(self, *args, **kwargs):
if len(args) == len(kwargs) == 0:
return self._data
else:
return numpy.array(self._data, *args, **kwargs)
@property
def nbytes(self):
return self._data.nbytes
def __getitem__(self, where):
return self._data[where]
def __len__(self):
return len(self._data)
def __repr__(self):
if self.class_version is None:
version = ""
else:
version = f" (version {self.class_version})"
return "<{}{} {} at 0x{:012x}>".format(
self.classname,
version,
numpy.array2string(
self._data,
max_line_width=numpy.inf,
separator=", ",
formatter={"float": lambda x: "%g" % x},
threshold=6,
),
id(self),
)
def tojson(self):
return self._data.tolist()
@classmethod
def awkward_form(cls, file, context):
awkward = uproot.extras.awkward()
return awkward.forms.ListOffsetForm(
context["index_format"],
uproot._util.awkward_form(cls.dtype, file, context),
)
writable = True
def _to_writable_postprocess(self, original):
self._data = original._data
def _serialize(self, out, header, name, tobject_flags):
where = len(out)
for x in self._bases:
x._serialize(out, True, None, tobject_flags)
out.append(_tarray_format1.pack(self._members["fN"]))
out.append(uproot._util.tobytes(self._data))
if header:
num_bytes = sum(len(x) for x in out[where:])
version = 1
out.insert(where, uproot.serialization.numbytes_version(num_bytes, version))
class Model_TArrayC(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayC`` (``dtype(">i1")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">i1")
class Model_TArrayS(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayS`` (``dtype(">i2")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">i2")
class Model_TArrayI(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayI`` (``dtype(">i4")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">i4")
class Model_TArrayL(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayL`` (``dtype(">i8")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">i8")
class Model_TArrayL64(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayL64`` (``dtype(">i8")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">i8")
class Model_TArrayF(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayF`` (``dtype(">f4")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">f4")
class Model_TArrayD(Model_TArray):
"""
A versionless :doc:`uproot.model.Model` for ``TArrayD`` (``dtype(">f8")``).
It also satisfies Python's abstract ``Sequence`` protocol.
"""
dtype = numpy.dtype(">f8")
uproot.classes["TArray"] = Model_TArray
uproot.classes["TArrayC"] = Model_TArrayC
uproot.classes["TArrayS"] = Model_TArrayS
uproot.classes["TArrayI"] = Model_TArrayI
uproot.classes["TArrayL"] = Model_TArrayL
uproot.classes["TArrayL64"] = Model_TArrayL64
uproot.classes["TArrayF"] = Model_TArrayF
uproot.classes["TArrayD"] = Model_TArrayD