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LibJS: Disallow 'continue' & 'break' outside of their respective scopes

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'continue' is no longer allowed outside of a loop, and an unlabeled
'break' is not longer allowed outside of a loop or switch statement.
Labeled 'break' statements are still allowed everywhere, even if the
label does not exist.
This commit is contained in:
Matthew Olsson 2020-10-07 12:21:15 -07:00 • committed by Andreas Kling
parent b85af075b7
commit e49ea1b520
Notes: sideshowbarker 2024-07-19 01:58:28 +09:00
3 changed files with 44 additions and 5 deletions
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18
Libraries/LibJS/Tests/break-continue-syntax-errors.js Normal file
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test("'break' syntax errors", () => {
expect("break").not.toEval();
expect("break label").not.toEval();
expect("{ break }").not.toEval();
// FIXME: Parser does not throw error on nonexistent label
// expect("{ break label }.not.toEval();
expect("label: { break label }").toEval();
});
test("'continue' syntax errors", () => {
expect("continue").not.toEval();
expect("continue label").not.toEval();
expect("{ continue }").not.toEval();
expect("{ continue label }").not.toEval();
expect("label: { continue label }").not.toEval();
expect("switch (true) { case true: continue; }").not.toEval();
});