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LibJS: Take advantage of Value::Type::Int32 in a bunch of functions

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If a JS::Value has type Int32, we know it's a finite, 32-bit integer.
Use this information to avoid converting it to a double if possible.
This commit is contained in:
Andreas Kling 2021-10-07 19:23:56 +02:00
parent 5b1f697460
commit e67155638c
2 changed files with 65 additions and 21 deletions
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12
Userland/Libraries/LibJS/Runtime/Value.cpp
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@ -580,18 +580,6 @@ u64 Value::to_bigint_uint64(GlobalObject& global_object) const
return bigint->big_integer().to_u64();
}
// FIXME: These two conversions are wrong for JS, and seem likely to be footguns
i32 Value::as_i32() const
{
return static_cast<i32>(as_double());
}
u32 Value::as_u32() const
{
VERIFY(as_double() >= 0);
return (u32)min(as_double(), (double)NumericLimits<u32>::max());
}
double Value::to_double(GlobalObject& global_object) const
{
auto number = to_number(global_object);