68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
# Copyright (c) 2016 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import yaql
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ITERATORS_LIMIT = 100
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EXPRESSION_MEMORY_QUOTA = 512 * 1024
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ENGINE_10_OPTIONS = {
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'yaql.limitIterators': ITERATORS_LIMIT,
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'yaql.memoryQuota': EXPRESSION_MEMORY_QUOTA,
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'yaql.convertSetsToLists': True,
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'yaql.convertTuplesToLists': True,
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'yaql.iterableDicts': True
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}
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ENGINE_12_OPTIONS = {
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'yaql.limitIterators': ITERATORS_LIMIT,
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'yaql.memoryQuota': EXPRESSION_MEMORY_QUOTA,
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'yaql.convertSetsToLists': True,
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'yaql.convertTuplesToLists': True
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}
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def _add_operators(engine_factory):
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engine_factory.insert_operator(
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'>', True, 'is',
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yaql.factory.OperatorType.BINARY_LEFT_ASSOCIATIVE, False)
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engine_factory.insert_operator(
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None, True, ':',
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yaql.factory.OperatorType.BINARY_LEFT_ASSOCIATIVE, True)
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engine_factory.insert_operator(
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':', True, ':',
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yaql.factory.OperatorType.PREFIX_UNARY, False)
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engine_factory.operators.insert(0, ())
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def _create_engine():
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engine_factory = yaql.factory.YaqlFactory()
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_add_operators(engine_factory=engine_factory)
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options = ENGINE_12_OPTIONS
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return engine_factory.create(options=options)
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class YaqlChecker(object):
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def __init__(self):
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self._engine = _create_engine()
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def __call__(self, data):
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try:
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self._engine(data)
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except yaql.utils.exceptions.YaqlParsingException:
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return False
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except TypeError:
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return False
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return True
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