Files
ladybird/Libraries/LibJS/Runtime/Error.cpp
Andreas Kling 68fa684f76 LibJS: Account runtime storage as external memory
Report outline storage retained by scripts, environments, module
namespace objects, iterator helpers, property name iterators, argument
objects, and error tracebacks. These objects keep vectors and maps that
can grow independently from their GC cell sizes.
2026-05-07 10:03:09 +02:00

109 lines
4.1 KiB
C++

/*
* Copyright (c) 2020-2025, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
namespace JS {
GC_DEFINE_ALLOCATOR(Error);
GC::Ref<Error> Error::create(Realm& realm)
{
return realm.create<Error>(realm.intrinsics().error_prototype());
}
GC::Ref<Error> Error::create(Realm& realm, Utf16String message)
{
auto error = Error::create(realm);
error->set_message(move(message));
return error;
}
GC::Ref<Error> Error::create(Realm& realm, StringView message)
{
return create(realm, Utf16String::from_utf8(message));
}
Utf16String Error::stack_string(CompactTraceback compact) const
{
return ErrorData::stack_string(compact);
}
Error::Error(Object& prototype)
: Object(ConstructWithPrototypeTag::Tag, prototype)
, ErrorData(prototype.vm())
{
}
void Error::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
ErrorData::visit_edges(visitor);
}
size_t Error::external_memory_size() const
{
return Object::external_memory_size() + ErrorData::external_memory_size();
}
// 20.5.8.1 InstallErrorCause ( O, options ), https://tc39.es/ecma262/#sec-installerrorcause
ThrowCompletionOr<void> Error::install_error_cause(Value options)
{
auto& vm = this->vm();
// 1. If Type(options) is Object and ? HasProperty(options, "cause") is true, then
if (options.is_object() && TRY(options.as_object().has_property(vm.names.cause))) {
// a. Let cause be ? Get(options, "cause").
auto cause = TRY(options.as_object().get(vm.names.cause));
// b. Perform CreateNonEnumerableDataPropertyOrThrow(O, "cause", cause).
create_non_enumerable_data_property_or_throw(vm.names.cause, cause);
}
// 2. Return unused.
return {};
}
void Error::set_message(Utf16String message)
{
auto& vm = this->vm();
u8 attr = Attribute::Writable | Attribute::Configurable;
define_direct_property(vm.names.message, PrimitiveString::create(vm, move(message)), attr);
}
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, ArrayType) \
GC_DEFINE_ALLOCATOR(ClassName); \
GC::Ref<ClassName> ClassName::create(Realm& realm) \
{ \
return realm.create<ClassName>(realm.intrinsics().snake_name##_prototype()); \
} \
\
GC::Ref<ClassName> ClassName::create(Realm& realm, Utf16String message) \
{ \
auto error = ClassName::create(realm); \
error->set_message(move(message)); \
return error; \
} \
\
GC::Ref<ClassName> ClassName::create(Realm& realm, StringView message) \
{ \
return create(realm, Utf16String::from_utf8(message)); \
} \
\
ClassName::ClassName(Object& prototype) \
: Error(prototype) \
{ \
}
JS_ENUMERATE_NATIVE_ERRORS
#undef __JS_ENUMERATE
}