How to use tree-sitter-objdump with Node.js?

[lancejpollard]

Is it possible to use this objdump parser with node.js? If so, would you mind showing real quick a hello world? Basically to generate an AST.

Thanks so much!

[ColinKennedy]

Have you tried looking at https://github.com/tree-sitter/node-tree-sitter? It has an example hello world setup for a Javascript parser. I'm guessing the steps there are the same for tree-sitter-objdump as long as you replace const JavaScript = require('tree-sitter-javascript'); with const Objdump = require('tree-sitter-objdump'); or some equivalent. I don't know node.js but I can try it if this doesn't work out for you.

[lancejpollard]

@ColinKennedy first error, I will try just cloning the repo and requiring, it doesn't look like it's published to npm.

 ERR_PNPM_FETCH_404  GET https://registry.npmjs.org/tree-sitter-objdump: Not Found - 404

This error happened while installing a direct dependency of /Users/lancepollard/start/termsurf/deck/task

tree-sitter-objdump is not in the npm registry, or you have no permission to fetch it.

Then I get:

Error: Cannot find module '../../build/Release/tree_sitter_objdump_binding'
Require stack:
- /Users/lancepollard/Desktop/tree-sit/tree-sitter-objdump/bindings/node/index.js
- /Users/lancepollard/Desktop/tree-sit/test.js

With test script:

const Parser = require('tree-sitter');
const Objdump = require('./tree-sitter-objdump');

const parser = new Parser();
parser.setLanguage(Objdump);

[lancejpollard]

Hey! I copied all the code from objdump into a local repo, then followed these instructions! I didn't think it would be so easy :) Thanks for the push!

npm install tree-sitter-cli nan
export PATH=$PATH:./node_modules/.bin
tree-sitter generate
objdump -S test.out > test.dump
tree-sitter parse test.dump

...
    (memory_offset [129, 0] - [130, 30]
      (address [129, 0] - [129, 9])
      (ERROR [129, 9] - [130, 9]
        (machine_code_bytes [129, 11] - [129, 13]
          (byte [129, 11] - [129, 13]))
        (instruction [129, 13] - [129, 39])
        (ERROR [129, 40] - [129, 43]
          (address [129, 40] - [129, 42])
          (ERROR [129, 42] - [129, 43]))
        (address [130, 0] - [130, 9]))
      (machine_code_bytes [130, 11] - [130, 13]
        (byte [130, 11] - [130, 13]))
      (instruction [130, 13] - [130, 30]))))

Now to get it in JSON...

Do you know how to export JSON from the CLI, or do I have to resort to some C API stuff?

That output is from the CLI, not from JS, didn't get that working.

[ColinKennedy]

I wouldn't know, sorry. tree-sitter-objdump is just a parser for objdump, I don't have expert knowledge on what exists in the tree-sitter ecosystem. To talk to someone about tree-sitter APIs / features, I recommend messaging on their Discord or GitHub discussions. I've messaged those folks on Discord before and they're quick + knowledgeable.

Discord: https://discord.com/invite/w7nTvsVJhm
GitHub Discussions: https://github.com/tree-sitter/tree-sitter/discussions