Hi everyone!
I wanted to play with hot new PHP features, but am hardstuck with 7.4 version on current job, so it made me decide to create a small project to test waters with new features.
So here it is, it is a hand written parser with zero dependencies, which translates Golang code to an AST, written in PHP 8.1.
https://github.com/tuqqu/go-parser
Feel free to provide feedback!
Posted Feb 5, 2022, 12:40 PM UTC · edited
Amazing! Can I generate Go code with this lib? Would be cool to translate PHP code to Go.
Thanks! More likely the library would be useful if you want to write a Go to PHP transpiler, not the other way around, I think
Why on gods sacred earth should anyone want to do this?
Because we can !
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Do you have any recomendations for starting with implementing parsers?
Sure! I would suggest looking at the first section of "Crafting Interpreters". And section 6 of "The Awk Programming language". Both books aren't strictly about parsers, but nonetheless they cover this topic very well and in a beginner friendly manner.
Thank you, will look into it.
Wow! Amazing! Does even things like go() concurrence works on it?
I think you got an impression this is some kind of a runtime. It’s not, it’s a parser only. But yeah, all language features are supported.
What was the most useful PHP 8.1 feature that helped you to build the parser?
I loved all of them, but the most useful were
Enumspaired withmatchexpression, definitely. A very very useful combo.[deleted]
matchis nice, but cannot substituteswitchcompletely (yet at least).It is limited to a single expression only, hence we still need to use
switchin cases where we have more than one statement to execute.