tree-sitter.tree-sitter/.github/scripts/wasm_stdlib.js
Max Brunsfeld 0e2af0d8d1
Allow using Tree-sitter rust lib in multi-threaded web apps compiled to wasm32-unknown-unknown (#5851)
* feat(wasm): make syntax trees sendable

* test(wasm): transfer trees across workers

* test(wasm): use JSON grammar for tree transfer

* test(wasm): edit trees across workers

* test(wasm): share dlmalloc with tree-sitter

* test(wasm): simplify worker tree exchange

* test(wasm): drive tree exchange from Rust

* test(wasm): split sendable-tree xtask

* test(wasm): generalize Rust web fixture

* test(wasm): exercise parallel Rust tree access

* fix(wasm): use Rust global allocator for C core

* test(wasm): use default Rust allocator

* feat(wasm): support external scanners in Rust web apps

* Simplify example further, add a readme

* Regenerate wasm-stdlib

* Fix wasm_stdlib check script

* Vendor the Wasm standard library subset

* Test Unicode Ruby scanner behavior in Wasm

* Make Wasm tree languages instance-aware

* Test multi-threaded use of queries in wasm32-unknown

* Refactor reference-counted language storage

* Check ABI version compat before loading rest of language

* 🎨 Remove redundant #ifdef block

* Reject unsupported Rust Wasm builds on 0.26
2026-08-14 17:05:42 -07:00

36 lines
1.1 KiB
JavaScript

module.exports = async ({ github, context, core }) => {
if (context.eventName !== 'pull_request') return;
const prNumber = context.payload.pull_request.number;
const owner = context.repo.owner;
const repo = context.repo.repo;
const files = await github.paginate(github.rest.pulls.listFiles, {
owner,
repo,
pull_number: prNumber,
per_page: 100
});
const changedFiles = files.map(file => file.filename);
const wasmStdLibSources = [
'lib/src/wasm-stdlib/external_scanner_allocator.c',
'lib/src/wasm-stdlib/imports.txt',
'lib/src/wasm-stdlib/libc.c',
'lib/src/wasm-stdlib/stdio.c'
];
const dirChanged = changedFiles.some(file =>
wasmStdLibSources.includes(file) ||
file.startsWith('lib/src/wasm-stdlib/libc/ctype/') ||
file.startsWith('lib/src/wasm-stdlib/libc/string/')
);
if (!dirChanged) return;
const wasmStdLibHeader = 'lib/src/wasm-stdlib/external_scanner_stdlib.h';
const requiredChanged = changedFiles.includes(wasmStdLibHeader);
if (!requiredChanged) core.setFailed(`Changes detected in the Wasm stdlib sources but ${wasmStdLibHeader} was not modified.`);
};