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// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 25.3.1.4
description: >
When a generator is paused within a `try` block that is declared within a
`try` block of a `try..catch` statement, `throw` should interrupt control
flow as if a `throw` statement had appeared at that location in the
function body.
features: [generators]
---*/
var unreachable = 0;
function* g() {
try {
yield 1;
try {
yield 2;
unreachable += 1;
} catch (e) {
yield e;
}
yield 3;
} finally {
yield 4;
}
yield 5;
}
var iter = g();
var exception = new Error();
var result;
result = iter.next();
assert.sameValue(result.value, 1, 'First result value');
assert.sameValue(result.done, false, 'First result `done` flag');
result = iter.next();
assert.sameValue(result.value, 2, 'Second result `value`');
assert.sameValue(result.done, false, 'Second result `done` flag');
result = iter.throw(exception);
assert.sameValue(result.value, exception, 'Third result `value`');
assert.sameValue(result.done, false, 'Third result `done` flag');
assert.sameValue(
unreachable,
0,
'statement following `yield` not executed (following `throw`)'
);
result = iter.next();
assert.sameValue(result.value, 3, 'Fourth result `value');
assert.sameValue(result.done, false, 'Fourth result `done` flag');
result = iter.next();
assert.sameValue(result.value, 4, 'Fifth result `value`');
assert.sameValue(result.done, false, 'Firth result `done` flag');
result = iter.next();
assert.sameValue(result.value, 5, 'Sixth result `value`');
assert.sameValue(result.done, false, 'Sixth result `done` flag');
result = iter.next();
assert.sameValue(
result.value, undefined, 'Result `value` is undefined when done'
);
assert.sameValue(result.done, true, 'Result `done` flag is `true` when done');
assert.sameValue(
unreachable, 0, 'statement following `yield` not executed (once "completed")'
);
iter.next();
|
