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https://github.com/gnuradio/gnuradio-companion.git
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43e6a43e3d
All of the removed `from __future__ import` were needed in older versions of Python (mostly 2.5.x and below) but later became mandatory in most versions of Python 3 hence are not necessary anymore. More specifically, according to __future__.py[1]: - unicode_literals is part of Python since versions 2.6.0 and 3.0.0; - print_function is part of Python since versions 2.6.0 and 3.0.0; - absolute_import is part of Python since versions 2.5.0 and 3.0.0; - division is part of Python since versions 2.2.0 and 3.0.0; Get rid of those unnecessary imports to slightly clean up the codebase. [1] https://github.com/python/cpython/blob/master/Lib/__future__.py
91 lines
2.9 KiB
Python
91 lines
2.9 KiB
Python
# Copyright 2016 Free Software Foundation, Inc.
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# This file is part of GNU Radio
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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#
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import six
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from .utils import Message, Spec
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class Validator(object):
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def __init__(self, scheme=None):
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self._path = []
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self.scheme = scheme
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self.messages = []
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self.passed = False
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def run(self, data):
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if not self.scheme:
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return True
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self._reset()
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self._path.append('block')
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self._check(data, self.scheme)
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self._path.pop()
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return self.passed
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def _reset(self):
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del self.messages[:]
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del self._path[:]
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self.passed = True
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def _check(self, data, scheme):
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if not data or not isinstance(data, dict):
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self._error('Empty data or not a dict')
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return
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if isinstance(scheme, dict):
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self._check_dict(data, scheme)
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else:
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self._check_var_key_dict(data, *scheme)
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def _check_var_key_dict(self, data, key_type, value_scheme):
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for key, value in six.iteritems(data):
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if not isinstance(key, key_type):
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self._error('Key type {!r} for {!r} not in valid types'.format(
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type(value).__name__, key))
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if isinstance(value_scheme, Spec):
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self._check_dict(value, value_scheme)
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elif not isinstance(value, value_scheme):
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self._error('Value type {!r} for {!r} not in valid types'.format(
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type(value).__name__, key))
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def _check_dict(self, data, scheme):
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for key, (types_, required, item_scheme) in six.iteritems(scheme):
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try:
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value = data[key]
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except KeyError:
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if required:
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self._error('Missing required entry {!r}'.format(key))
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continue
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self._check_value(value, types_, item_scheme, label=key)
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for key in set(data).difference(scheme):
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self._warn('Ignoring extra key {!r}'.format(key))
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def _check_list(self, data, scheme, label):
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for i, item in enumerate(data):
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self._path.append('{}[{}]'.format(label, i))
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self._check(item, scheme)
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self._path.pop()
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def _check_value(self, value, types_, item_scheme, label):
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if not isinstance(value, types_):
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self._error('Value type {!r} for {!r} not in valid types'.format(
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type(value).__name__, label))
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if item_scheme:
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if isinstance(value, list):
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self._check_list(value, item_scheme, label)
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elif isinstance(value, dict):
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self._check(value, item_scheme)
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def _error(self, msg):
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self.messages.append(Message('.'.join(self._path), 'error', msg))
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self.passed = False
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def _warn(self, msg):
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self.messages.append(Message('.'.join(self._path), 'warn', msg))
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