lenra-io / lenra-io/query-parser

[Task] regex operator

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enhancement hacktoberfest
Dominant language
Elixir
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Description

What should be done

According to https://github.com/mongodb-js/mongodb-language-model/blob/master/grammar.pegjs#L449, regex is a part of leaf_value.

Grammar
  • implement extended_json_value & ejson_regex
Exec

In the idea, we will have the Exec? call with pos "leaf-value" and value an object: {regex: , options: }
run pattern on return true / false

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the parser entry points for extended_json_value and ejson_regex, using the regex definition in grammar.pegjs as the reference. Trace how a leaf-value Exec call receives an object containing regex and options. Done means regex values parse and the Exec call returns true or false when the pattern is run.

Written by the indexing model from the issue text.

Assessment

Tech stack
elixir
Domain
backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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