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LibJS: Add private references

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This commit is contained in:
davidot 2021-10-12 21:48:50 +02:00 • committed by Linus Groh
parent d94b5e511f
commit c7a6572789
2 changed files with 43 additions and 5 deletions
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29
Userland/Libraries/LibJS/Runtime/Reference.h
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@ -15,6 +15,8 @@
namespace JS {
Reference make_private_reference(VM&, Value base_value, FlyString const& private_identifier);
class Reference {
public:
enum class BaseType : u8 {
@ -55,6 +57,16 @@ public:
{
}
Reference(Value base, PrivateName name)
: m_base_type(BaseType::Value)
, m_base_value(base)
, m_this_value(Value {})
, m_strict(true)
, m_is_private(true)
, m_private_name(move(name))
{
}
Value base() const
{
VERIFY(m_base_type == BaseType::Value);
@ -80,9 +92,7 @@ public:
return false;
if (m_base_type == BaseType::Environment)
return false;
if (m_base_value.is_boolean() || m_base_value.is_string() || m_base_value.is_symbol() || m_base_value.is_bigint() || m_base_value.is_number() || m_base_value.is_object())
return true;
return false;
return true;
}
// 6.2.4.7 GetThisValue ( V ), https://tc39.es/ecma262/#sec-getthisvalue
@ -100,6 +110,12 @@ public:
return !m_this_value.is_empty();
}
// 6.2.4.4 IsPrivateReference ( V ), https://tc39.es/ecma262/#sec-isprivatereference
bool is_private_reference() const
{
return m_is_private;
}
// Note: Non-standard helper.
bool is_environment_reference() const
{
@ -119,7 +135,7 @@ public:
String to_string() const;
bool is_valid_reference() const { return m_name.is_valid(); }
bool is_valid_reference() const { return m_name.is_valid() || m_is_private; }
Optional<EnvironmentCoordinate> environment_coordinate() const { return m_environment_coordinate; }
@ -134,6 +150,11 @@ private:
PropertyName m_name;
Value m_this_value;
bool m_strict { false };
bool m_is_private { false };
// FIXME: This can (probably) be an union with m_name.
PrivateName m_private_name { 0, "" };
Optional<EnvironmentCoordinate> m_environment_coordinate;
};