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error_ideas.py
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error_ideas.py
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# Copyright 2022 Synchronous Technologies Pte Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from zef import *
from zef.ops import *
import zef
from zef.core.op_implementations.implementation_typing_functions import ZefGenerator
from zef.core.error import Error_
@func
def generate_from_x(x):
def wrapper():
for i in range(x):
yield i
return ZefGenerator(wrapper)
def inner_func(x):
return 5/(x-16) - 1
def catching_exc(x):
try:
return inner_func(x)
except Exception as exc:
raise Exception("Nested") from exc
@func
def user_preprocess(x):
if x > 3:
return x + 10
return x
@func
def outer_func(x):
big_list = generate_from_x(x)
slow_build_up_op = x | generate_from_x
inner_op = user_preprocess | user_transform[user_predicate]
slow_build_up_op = slow_build_up_op | map[inner_op]
slow_build_up_op = slow_build_up_op | user_postprocess
return slow_build_up_op | collect
# return big_list | map[user_transform[user_preprocess]] | user_postprocess | collect
# Panic->Unexp^ ^Panic ^Panic ^Unexp ^Unexp->Panic
@func
def user_transform(x, fct):
working = 0
try:
while working <= x:
if working | fct | collect: # Location of Panic exception - from frame 3 but in frame 2
return x
working += 1
except Error_ as exc:
raise
return 2*x
@func
def user_predicate(x):
pre = x*x
def nested(x):
return catching_exc(x)
mid = nested(x)
post = mid + pre
# return post + pre > 0
return False
@func
def user_postprocess(input):
# some_other_stuff = thing(input)
some_other_stuff = input
for item in input: # Location of UnexpectedError exception - in frame 2
pass
return some_other_stuff
@func
def user_filter(x):
return True
[1,2,3,10,20] | map[outer_func] | filter[user_filter] | collect # Panic exception in frame 1