P

parser

go envparse

https://github.com/hashicorp/go-envparse Minimal environment variable parser for Go

ksql

https://github.com/go-playground/ksql

a JSON data expression lexer, parser, cli and library

xpathparser

🔧🔗 GitHub

XPath 1.0 Parser in Go

https://github.com/VictoriaMetrics/metricsql Standalone PromQL and MetricsQL parser