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LibJS: Implement the LoopContinues AO

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This commit is contained in:
Linus Groh 2022-01-05 19:00:36 +01:00
parent fc474966bc
commit eed764e1dd
1 changed files with 23 additions and 0 deletions
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23
Userland/Libraries/LibJS/AST.cpp
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@ -590,6 +590,29 @@ Completion WithStatement::execute(Interpreter& interpreter, GlobalObject& global
return result.update_empty(js_undefined());
}
// 14.7.1.1 LoopContinues ( completion, labelSet ), https://tc39.es/ecma262/#sec-loopcontinues
static bool loop_continues(Completion const& completion, Vector<FlyString> const& label_set)
{
// 1. If completion.[[Type]] is normal, return true.
if (completion.type() == Completion::Type::Normal)
return true;
// 2. If completion.[[Type]] is not continue, return false.
if (completion.type() != Completion::Type::Continue)
return false;
// 3. If completion.[[Target]] is empty, return true.
if (!completion.target().has_value())
return true;
// 4. If completion.[[Target]] is an element of labelSet, return true.
if (label_set.contains_slow(*completion.target()))
return true;
// 5. Return false.
return false;
}
// 14.7.3.2 Runtime Semantics: WhileLoopEvaluation, https://tc39.es/ecma262/#sec-runtime-semantics-whileloopevaluation
Completion WhileStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
{