v8/tools/clusterfuzz/js_fuzzer/build_db.js
Michael Achenbach 320d98709f Open source js-fuzzer
This is a JavaScript fuzzer originally authored by Oliver Chang. It
is a mutation based fuzzer using Babel code transformations. For more
information see the included README.md.

The original code was altered:
- Add new V8 copyright headers.
- Make the test expectation generator aware of the headers.
- Fix file endings for presubmit checks.
- Fix `npm test` on fresh checkout with a new fake DB.
- Make test skipping work with new v8/tools location.
- OWNERS file.
- New title section in README.md.

No-Try: true
Bug: chromium:1109770
Change-Id: Ie71752c0a37491a50500c49060a3c526716ef933
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2320330
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69164}
2020-07-31 11:34:39 +00:00

67 lines
1.5 KiB
JavaScript

// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Collect JS nodes.
*/
const program = require('commander');
const corpus = require('./corpus.js');
const db = require('./db.js');
const path = require('path');
const sourceHelpers = require('./source_helpers.js');
function main() {
Error.stackTraceLimit = Infinity;
program
.version('0.0.1')
.option('-i, --input_dir <path>', 'Input directory.')
.option('-o, --output_dir <path>', 'Output directory.')
.parse(process.argv);
if (!program.args.length) {
console.log('Need to specify corpora.');
return;
}
if (!program.output_dir) {
console.log('Need to specify output dir.');
return;
}
const mutateDb = new db.MutateDbWriter(program.output_dir);
const expressions = new Set();
const inputDir = path.resolve(program.input_dir);
for (const corpusName of program.args) {
const curCorpus = new corpus.Corpus(inputDir, corpusName);
for (const relPath of curCorpus.relFiles()) {
let source;
try {
source = sourceHelpers.loadSource(inputDir, relPath);
} catch (e) {
console.log(e);
continue;
}
if (!source) {
continue;
}
try{
mutateDb.process(source, expressions);
} catch (e) {
console.log(e);
}
}
}
mutateDb.writeIndex();
}
main();