Expression Parsing with Antlr and Simple String Splitting

[ralikio]

Description
Comparison between Antrl parser and simple string splitting to implement #1520.

Related issue(s)

1698

[github-actions]

Add one of following labels

- kind/feature -> Use it when you want to submit a new feature

- kind/enhancement -> Use it when you modify or improve an existing feature

- kind/bug -> Use it when you fix a bug

[PK85]

General comment about hap CLI version "0.0.5"

• 1) Looks that generally parsing rules works, but found below issues:
  • 1.1) Search labels are not displayed
  • 1.2) Some errors for rules could be more specific, like: (we can fix//adjust that later)
    • 1.2.1) If wrong input attr, output attr, plan then suggest users what are correct possible values
    • 1.2.2) Position of the incorrect value is not specified
• 2) Uniqueness check should:
  • 2.1) First step: filter out PR=* and HR=*
  • 2.2) Second step example: Rule1: aws(PR=abc) Rule2: aws(HR=efg) not allowed (take into account that if rule No3 will be aws(HR=efg, PR=abc) then this case that was not uniquee, has right now a Rule which eliminates ambiguity)
• 3) When tool will support making request (with input PLAN PR HR) then I will test priority
• 4) I added some new rule sets: https://github.com/PK85/hap-parser/tree/main/resources
  • 4.1) Please make them working as they are described in file names.
• 5) We decided to not support antlr