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LibWeb: Implement StructuredSerialize for BigIntObject and Symbol

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This commit is contained in:
Andrew Kaster 2023-08-21 17:39:44 -06:00 • committed by Andreas Kling
parent f3cf7496a1
commit b3bd232a5e
3 changed files with 29 additions and 2 deletions
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2
Tests/LibWeb/Text/expected/HTML/StructuredClone-object-primitives.txt
View file

@ -3,4 +3,6 @@ false
123
123.456
This is a String object
9007199254740991
1692748800000
ERROR: DataCloneError: Cannot serialize Symbol

9
Tests/LibWeb/Text/input/HTML/StructuredClone-object-primitives.html
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@ -6,6 +6,15 @@
println(structuredClone(new Number(123)));
println(structuredClone(new Number(123.456)));
println(structuredClone(new String("This is a String object")));
println(structuredClone(BigInt("0x1fffffffffffff")));
println(structuredClone(Date.UTC(2023, 7, 23)));
try {
structuredClone(Symbol("foo"));
println("FAILED")
}
catch(e) {
println("ERROR: " + e.name + ": " + e.message)
}
});
</script>

20
Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
View file

@ -11,6 +11,7 @@
#include <AK/Vector.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/BigInt.h>
#include <LibJS/Runtime/BigIntObject.h>
#include <LibJS/Runtime/BooleanObject.h>
#include <LibJS/Runtime/Date.h>
#include <LibJS/Runtime/NumberObject.h>
@ -60,6 +61,8 @@ enum ValueTag {
NumberObject,
BigIntObject,
StringObject,
DateObject,
@ -122,7 +125,9 @@ public:
if (return_primitive_type)
return m_serialized;
// FIXME 5. If Type(value) is Symbol, then throw a "DataCloneError" DOMException.
// 5. If Type(value) is Symbol, then throw a "DataCloneError" DOMException.
if (value.is_symbol())
return WebIDL::DataCloneError::create(*m_vm.current_realm(), "Cannot serialize Symbol"sv);
// 6. Let serialized be an uninitialized value.
// NOTE: We use the range of the soon-to-be-serialized value in our serialized data buffer
@ -144,7 +149,12 @@ public:
m_serialized.append(bit_cast<u32*>(&number), 2);
}
// FIXME 9. Otherwise, if value has a [[BigIntData]] internal slot, then set serialized to { [[Type]]: "BigInt", [[BigIntData]]: value.[[BigIntData]] }.
// 9. Otherwise, if value has a [[BigIntData]] internal slot, then set serialized to { [[Type]]: "BigInt", [[BigIntData]]: value.[[BigIntData]] }.
else if (value.is_object() && is<JS::BigIntObject>(value.as_object())) {
m_serialized.append(ValueTag::BigIntObject);
auto& bigint_object = static_cast<JS::BigIntObject&>(value.as_object());
TRY(serialize_string(m_serialized, TRY_OR_THROW_OOM(m_vm, bigint_object.bigint().to_string())));
}
// 10. Otherwise, if value has a [[StringData]] internal slot, then set serialized to { [[Type]]: "String", [[StringData]]: value.[[StringData]] }.
else if (value.is_object() && is<JS::StringObject>(value.as_object())) {
@ -270,6 +280,12 @@ public:
m_memory.append(JS::NumberObject::create(*realm, value));
break;
}
case ValueTag::BigIntObject: {
auto* realm = m_vm.current_realm();
auto big_int = TRY(deserialize_big_int_primitive(m_vm, m_vector, position));
m_memory.append(JS::BigIntObject::create(*realm, big_int));
break;
}
case ValueTag::StringObject: {
auto* realm = m_vm.current_realm();
auto string = TRY(deserialize_string_primitive(m_vm, m_vector, position));