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LibJS: Throw RangeError in String.prototype.repeat() if count is invalid

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Linus Groh 2020-04-19 22:34:57 +01:00 • committed by Andreas Kling
parent 0718f216af
commit a893c6ff0d
1 changed files with 5 additions and 6 deletions
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11
Libraries/LibJS/Runtime/StringPrototype.cpp
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@ -86,12 +86,11 @@ Value StringPrototype::repeat(Interpreter& interpreter)
ASSERT(this_object->is_string_object());
if (!interpreter.argument_count())
return js_string(interpreter, String::empty());
i32 count = 0;
count = interpreter.argument(0).to_i32();
if (count < 0) {
// FIXME: throw RangeError
return {};
}
if (interpreter.argument(0).to_double() < 0)
return interpreter.throw_exception<RangeError>("repeat count must be a positive number");
if (interpreter.argument(0).to_number().is_infinity())
return interpreter.throw_exception<RangeError>("repeat count must be a finite number");
auto count = interpreter.argument(0).to_i32();
auto* string_object = static_cast<StringObject*>(this_object);
StringBuilder builder;
for (i32 i = 0; i < count; ++i)