3 D\ @s8dZddlZddlmZddlmZGdddeZdS)a Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. N)CloudFormationLintRule) RuleMatchc@s8eZdZdZdZdZdZdZddgZdd Z d d Z d S) SubUnneededz Check if Sub is using a variableZW1020z6Sub isn't needed if it doesn't have a variable definedz3Checks sub strings to see if a variable is defined.zdhttps://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-sub.htmlZ functionssubcCs<g}|j|}|s8d}|jt||jdjtt||S)z+Test if a string has appropriate parametersz:Fn::Sub isn't needed because there are no variables at {0}/)Zget_sub_parametersappendrformatjoinmapstr)selfcfn sub_stringtreematchesZ string_paramsmessager}/private/var/folders/pf/wv4htv3x0qs2c2mp0dnn0kchsvlck3/T/pip-install-emcbgzcf/cfn-lint/cfnlint/rules/functions/SubUnneeded.py _test_strings zSubUnneeded._test_stringcCsg}|jjd}xz|D]r}|d}|dd}t|tjrP|j|j|||qt|trt|dkr|d}|j|j|||dgqW|S)zCheck CloudFormation JoinzFn::SubNrr) Z transform_preget isinstancesix string_typesextendrlistlen)r r rZsub_objsZsub_objZ sub_value_objrrrrrmatch+s      zSubUnneeded.matchN) __name__ __module__ __qualname____doc__idZ shortdesc descriptionZ source_urltagsrrrrrrrs r)r#rZcfnlintrrrrrrrs