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LibJS: Make Value() default-construct the undefined value
The special empty value (that we use for array holes, Optional<Value> when empty and a few other other placeholder/sentinel tasks) still exists, but you now create one via JS::js_special_empty_value() and check for it with Value::is_special_empty_value(). The main idea here is to make it very unlikely to accidentally create an unexpected special empty value.
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github-actions[bot]
2025-04-05 09:21:31 +00:00
Author: https://github.com/awesomekling
Commit: 3cf50539ec
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4232
43 changed files with 165 additions and 122 deletions
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@ -85,7 +85,7 @@ ThrowCompletionOr<Value> GeneratorObject::execute(VM& vm, Completion const& comp
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auto generated_value = [](Value value) -> Value {
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if (value.is_cell())
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return static_cast<GeneratorResult const&>(value.as_cell()).result();
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return value.is_empty() ? js_undefined() : value;
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return value.is_special_empty_value() ? js_undefined() : value;
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};
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auto generated_continuation = [&](Value value) -> Optional<size_t> {
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