resume-interpreter-entry-trampoline.js

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// |jit-test| --emit-interpreter-entry

function* noFormals() {

  var x = yield 1;

  assertEq(x, "x");

  return 2;

function* formals(a, b, c) {

  var x = yield 1;

  assertEq(x, "x");

  // The resume frame pushes |undefined| for the formals, so these must come

  // from the environment.

  assertEq(a, 1);

  assertEq(b, 2);

  assertEq(c, 3);

  return 2;

function* withArgsObj(a) {

  var x = yield 1;

  assertEq(x, "x");

  assertEq(arguments.length, 3);

  assertEq(arguments[2], 3);

  return 2;

function* delegating(a) {

  var x = yield* formals(1, 2, 3);

  assertEq(x, 2);

  return 3;

for (var i = 0; i < 30; i++) {

  for (var gen of [noFormals, formals, withArgsObj]) {

    var it = gen(1, 2, 3);

    var res = it.next();

    assertEq(res.value, 1);

    assertEq(res.done, false);

    res = it.next("x");

    assertEq(res.value, 2);

    assertEq(res.done, true);

  var it = delegating(1);

  var res = it.next();

  assertEq(res.value, 1);

  assertEq(res.done, false);

  res = it.next("x");

  assertEq(res.value, 3);

  assertEq(res.done, true);

  // Resuming with throw() and return().

  it = formals(1, 2, 3);

  assertEq(it.next().value, 1);

  var caught = null;

  try {

    it.throw("boom");

  } catch (e) {

    caught = e;

  assertEq(caught, "boom");

  it = formals(1, 2, 3);

  assertEq(it.next().value, 1);

  res = it.return("done");

  assertEq(res.value, "done");

  assertEq(res.done, true);