Function getRandomInputs

deps/v8/tools/clusterfuzz/js_fuzzer/runner.js:26–53

* Returns an array of maxium `count` parsed input sources, randomly * selected from a primary corpus and a list of secondary corpora.

(primaryCorpus, secondaryCorpora, count)

 * selected from a primary corpus and a list of secondary corpora.
 */
function getRandomInputs(primaryCorpus, secondaryCorpora, count) {
  count = random.randInt(2, count);

  // Choose 40%-80% of inputs from primary corpus.
  const primaryCount = Math.floor(random.uniform(0.4, 0.8) * count);
  count -= primaryCount;

  let inputs = primaryCorpus.getRandomTestcases(primaryCount);

  // Split remainder equally between the secondary corpora.
  const secondaryCount = Math.floor(count / secondaryCorpora.length);

  for (let i = 0; i < secondaryCorpora.length; i++) {
    let currentCount = secondaryCount;
    if (i == secondaryCorpora.length - 1) {
      // Last one takes the remainder.
      currentCount = count;
    }

    count -= currentCount;
    if (currentCount) {
      inputs = inputs.concat(
          secondaryCorpora[i].getRandomTestcases(currentCount));
    }
  }

  return random.shuffle(inputs);
}

class Runner {
  *inputGen() {