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LibWasm: Allow Value::to<T>() to perform statically valid conversions

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e.g. i32 -> i16 (if within range).
This commit is contained in:
Ali Mohammad Pur 2023-04-05 00:41:23 +03:30 • committed by Ali Mohammad Pur
parent b10da81c7c
commit eceb244bef
1 changed files with 6 additions and 4 deletions
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10
Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
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@ -126,10 +126,12 @@ public:
Optional<T> result; Optional<T> result;
m_value.visit( m_value.visit(
[&](auto value) { [&](auto value) {
if constexpr (IsSame<T, decltype(value)>) if constexpr (IsSame<T, decltype(value)> || (!IsFloatingPoint<T> && IsSame<decltype(value), MakeSigned<T>>)) {
result = value; result = static_cast<T>(value);
else if constexpr (!IsFloatingPoint<T> && IsSame<decltype(value), MakeSigned<T>>) } else if constexpr (!IsFloatingPoint<T> && IsConvertible<decltype(value), T>) {
result = value; if (AK::is_within_range<T>(value))
result = static_cast<T>(value);
}
}, },
[&](Reference const& value) { [&](Reference const& value) {
if constexpr (IsSame<T, Reference>) { if constexpr (IsSame<T, Reference>) {