47 lines
1.2 KiB
Python
47 lines
1.2 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright 2014 - Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import collections
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import six
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import types
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import yaql
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from yaql import context as ctx
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def create_yaql_context():
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ctx = yaql.create_context()
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_register_functions(ctx)
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return ctx
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def _register_functions(yaql_ctx):
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yaql_ctx.register_function(_generator_length, 'length')
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yaql_ctx.register_function(_string_and_iterable_length, 'length')
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# Additional convenience YAQL functions.
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@ctx.EvalArg('a', arg_type=(six.string_types, collections.Iterable))
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def _string_and_iterable_length(a):
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return len(a)
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@ctx.EvalArg('a', arg_type=types.GeneratorType)
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def _generator_length(a):
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return sum(1 for i in a)
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