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[BugFix]: cfn-guard no longer errors out when rule files are empty, or contain only comments - #402
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Issue #, if available:
#376
Description of changes:
Added a check before parsing for the grammar, that discards all leading comments, or empty space, and made the
crate::rules::parser::rules_filefunction now returnResult<Option<RulesFile>, Error>instead ofResult<RulesFile, Error>calling functions of this now also return the sameResult<Option<RulesFile>, E>struct, and functions such asevaluate_rulenow return 0 if it receivesOk(None)functions such as the evaluator in our structured_reporter now just skip the step of appending to the list of rules.Also updated expected results of some test cases, and added a new test case for when using the validate command with a file that contains only comments
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license