mirror of
https://github.com/danbulant/oxc
synced 2026-05-24 12:21:58 +00:00
be87ca8419
First part of #3152. This adds a crate `oxc_traverse`, but doesn't connect it up to the transformer or anything else yet. I think we could merge this now - as it doesn't affect any code that's in use - and then iterate on it to add scopes before using it in transformer. Please see https://github.com/oxc-project/oxc/pull/3152#issuecomment-2094965406 for the broader picture.
40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
/*
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* Codegen for `traverse`.
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*
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* Parses Rust AST type definitions from files in `crates/oxc_ast/src/ast`, and generates:
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* - `src/traverse.rs`
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* - `src/ancestor.rs`
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* - `src/walk.rs`
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*
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* This is a quick-and-dirty version written in JS for speed of implementation.
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* We should do this properly with a Rust build script using `syn` etc.
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*/
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import {writeFile} from 'fs/promises';
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import {exec} from 'child_process';
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import {join as pathJoin} from 'path';
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import {fileURLToPath} from 'url';
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import {promisify} from 'util';
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import getTypesFromCode from './lib/parse.mjs';
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import generateTraverseTraitCode from './lib/traverse.mjs';
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import generateAncestorsCode from './lib/ancestor.mjs';
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import generateWalkFunctionsCode from './lib/walk.mjs';
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const execAsync = promisify(exec);
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const PREAMBLE = '// Generated by `scripts/build.mjs`.\n\n';
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const types = await getTypesFromCode();
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const outputDirPath = pathJoin(fileURLToPath(import.meta.url), '../../src');
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await writeToFile('traverse.rs', generateTraverseTraitCode(types));
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await writeToFile('ancestor.rs', generateAncestorsCode(types));
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await writeToFile('walk.rs', generateWalkFunctionsCode(types));
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async function writeToFile(filename, code) {
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code = `${PREAMBLE}${code}`;
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const path = pathJoin(outputDirPath, filename);
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console.log('Writing:', path);
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await writeFile(path, code);
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await execAsync(`rustfmt ${JSON.stringify(path)}`);
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}
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