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fix: don't require Form JSON to have 'parameters' #1245

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Jul 7, 2024
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26 changes: 13 additions & 13 deletions src/uproot/interpretation/library.py
Original file line number Diff line number Diff line change
Expand Up @@ -303,10 +303,10 @@ def _object_to_awkward_json(form, obj):
return out

elif form["class"][:15] == "ListOffsetArray":
if form["parameters"].get("__array__") == "string":
if form.get("parameters", {}).get("__array__") == "string":
return obj

elif form["content"]["parameters"].get("__array__") == "sorted_map":
elif form["content"].get("parameters", {}).get("__array__") == "sorted_map":
key_form = form["content"]["contents"][0]
value_form = form["content"]["contents"][1]
return [
Expand Down Expand Up @@ -385,30 +385,30 @@ def _awkward_json_to_array(awkward, form, array):
names.append(name)
length = len(array) if len(contents) == 0 else None
return awkward.contents.RecordArray(
contents, names, length, parameters=form["parameters"]
contents, names, length, parameters=form.get("parameters", {})
)

elif form["class"][:15] == "ListOffsetArray":
if form["parameters"].get("__array__") == "string":
if form.get("parameters", {}).get("__array__") == "string":
if isinstance(array, awkward.contents.EmptyArray):
content = awkward.contents.NumpyArray(
numpy.empty(0, dtype=numpy.uint8),
parameters=form["content"]["parameters"],
parameters=form["content"].get("parameters", {}),
)
return awkward.contents.ListOffsetArray(
awkward.index.Index64(numpy.array([0], dtype=numpy.uint8)),
content,
parameters=form["parameters"],
parameters=form.get("parameters", {}),
)
else:
content = _awkward_json_to_array(
awkward, form["content"], array.content
)
return type(array)(
array.offsets, content, parameters=form["parameters"]
array.offsets, content, parameters=form.get("parameters", {})
)

elif form["content"]["parameters"].get("__array__") == "sorted_map":
elif form["content"].get("parameters", {}).get("__array__") == "sorted_map":
offsets = _awkward_offsets(awkward, form, array)
key_form = form["content"]["contents"][0]
value_form = form["content"]["contents"][1]
Expand All @@ -419,7 +419,7 @@ def _awkward_json_to_array(awkward, form, array):
(keys, values),
None,
0,
parameters=form["content"]["parameters"],
parameters=form["content"].get("parameters", {}),
)
else:
keys = _awkward_json_to_array(awkward, key_form, array.content["0"])
Expand All @@ -429,10 +429,10 @@ def _awkward_json_to_array(awkward, form, array):
(keys, values),
None,
length,
parameters=form["content"]["parameters"],
parameters=form["content"].get("parameters", {}),
)
cls = uproot._util._content_cls_from_name(awkward, form["class"])
return cls(offsets, content, parameters=form["parameters"])
return cls(offsets, content, parameters=form.get("parameters", {}))

else:
offsets = _awkward_offsets(awkward, form, array)
Expand All @@ -443,15 +443,15 @@ def _awkward_json_to_array(awkward, form, array):
awkward, form["content"], array.content
)
cls = uproot._util._content_cls_from_name(awkward, form["class"])
return cls(offsets, content, parameters=form["parameters"])
return cls(offsets, content, parameters=form.get("parameters", {}))

elif form["class"] == "RegularArray":
if isinstance(array, awkward.contents.EmptyArray):
content = _awkward_json_to_array(awkward, form["content"], array)
else:
content = _awkward_json_to_array(awkward, form["content"], array.content)
return awkward.contents.RegularArray(
content, form["size"], parameters=form["parameters"]
content, form["size"], parameters=form.get("parameters", {})
)

else:
Expand Down