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AK: Allow Optional<Value> to be used in constant expressions

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This commit is contained in:
Jonne Ransijn 2025-04-10 15:04:56 +02:00
parent 09e9108750
commit f0b4d1b87e
1 changed files with 23 additions and 23 deletions
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46
Libraries/LibJS/Runtime/Value.h
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@ -154,7 +154,7 @@ public:
return !is_nan() && !is_infinity();
}
Value()
constexpr Value()
: Value(UNDEFINED_TAG << GC::TAG_SHIFT, (u64)0)
{
}
@ -428,12 +428,12 @@ private:
enum class EmptyTag { Empty };
Value(EmptyTag)
constexpr Value(EmptyTag)
: Value(EMPTY_TAG << GC::TAG_SHIFT, (u64)0)
{
}
Value(u64 tag, u64 val)
constexpr Value(u64 tag, u64 val)
{
ASSERT(!(tag & val));
m_value.encoded = tag | val;
@ -467,9 +467,9 @@ private:
ThrowCompletionOr<i32> to_i32_slow_case(VM&) const;
friend Value js_undefined();
friend Value js_null();
friend Value js_special_empty_value();
friend constexpr Value js_undefined();
friend constexpr Value js_null();
friend constexpr Value js_special_empty_value();
friend ThrowCompletionOr<Value> greater_than(VM&, Value lhs, Value rhs);
friend ThrowCompletionOr<Value> greater_than_equals(VM&, Value lhs, Value rhs);
friend ThrowCompletionOr<Value> less_than(VM&, Value lhs, Value rhs);
@ -478,17 +478,17 @@ private:
friend bool same_value_non_number(Value lhs, Value rhs);
};
inline Value js_undefined()
inline constexpr Value js_undefined()
{
return Value(UNDEFINED_TAG << GC::TAG_SHIFT, (u64)0);
}
inline Value js_null()
inline constexpr Value js_null()
{
return Value(NULL_TAG << GC::TAG_SHIFT, (u64)0);
}
inline Value js_special_empty_value()
inline constexpr Value js_special_empty_value()
{
return Value(Value::EmptyTag::Empty);
}
@ -564,38 +564,38 @@ class Optional<JS::Value> : public OptionalBase<JS::Value> {
public:
using ValueType = JS::Value;
Optional() = default;
constexpr Optional() = default;
template<SameAs<OptionalNone> V>
Optional(V) { }
constexpr Optional(V) { }
Optional(Optional<JS::Value> const& other)
constexpr Optional(Optional<JS::Value> const& other)
{
if (other.has_value())
m_value = other.m_value;
}
Optional(Optional&& other)
constexpr Optional(Optional&& other)
: m_value(other.m_value)
{
}
template<typename U = JS::Value>
requires(!IsSame<OptionalNone, RemoveCVReference<U>>)
explicit(!IsConvertible<U&&, JS::Value>) Optional(U&& value)
explicit(!IsConvertible<U&&, JS::Value>) constexpr Optional(U&& value)
requires(!IsSame<RemoveCVReference<U>, Optional<JS::Value>> && IsConstructible<JS::Value, U &&>)
: m_value(forward<U>(value))
{
}
template<SameAs<OptionalNone> V>
Optional& operator=(V)
constexpr Optional& operator=(V)
{
clear();
return *this;
}
Optional& operator=(Optional const& other)
constexpr Optional& operator=(Optional const& other)
{
if (this != &other) {
clear();
@ -604,7 +604,7 @@ public:
return *this;
}
Optional& operator=(Optional&& other)
constexpr Optional& operator=(Optional&& other)
{
if (this != &other) {
clear();
@ -613,34 +613,34 @@ public:
return *this;
}
void clear()
constexpr void clear()
{
m_value = JS::js_special_empty_value();
}
[[nodiscard]] bool has_value() const
[[nodiscard]] constexpr bool has_value() const
{
return !m_value.is_special_empty_value();
}
[[nodiscard]] JS::Value& value() &
[[nodiscard]] constexpr JS::Value& value() &
{
VERIFY(has_value());
return m_value;
}
[[nodiscard]] JS::Value const& value() const&
[[nodiscard]] constexpr JS::Value const& value() const&
{
VERIFY(has_value());
return m_value;
}
[[nodiscard]] JS::Value value() &&
[[nodiscard]] constexpr JS::Value value() &&
{
return release_value();
}
[[nodiscard]] JS::Value release_value()
[[nodiscard]] constexpr JS::Value release_value()
{
VERIFY(has_value());
JS::Value released_value = m_value;