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// Copyright (C) 2018 Peter Wong. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: pending
description: Behavior when first match is coerced to a empty string
info: |
%RegExpStringIteratorPrototype%.next ( )
[...]
9. Let match be ? RegExpExec(R, S).
10. If match is null, then
[...]
11. Else,
a. If global is true,
i. Let matchStr be ? ToString(? Get(match, "0")).
ii. If matchStr is the empty string,
1. Let thisIndex be ? ToLength(? Get(R, "lastIndex").
2. Let nextIndex be ! AdvanceStringIndex(S, thisIndex, fullUnicode).
3. Perform ? Set(R, "lastIndex", nextIndex, true).
iii. Return ! CreateIterResultObject(match, false).
features: [Symbol.matchAll]
---*/
var iter = /./g[Symbol.matchAll]('');
var execResult = {
get '0'() {
return {
toString() { return ''; }
};
}
};
var internalRegExp;
RegExp.prototype.exec = function () {
internalRegExp = this;
return execResult;
};
var result = iter.next();
assert.sameValue(internalRegExp.lastIndex, 1);
assert.sameValue(result.value, execResult);
assert(!result.done);
result = iter.next();
assert.sameValue(internalRegExp.lastIndex, 2);
assert.sameValue(result.value, execResult);
assert(!result.done);
reportCompare(0, 0);
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