mirror of
https://github.com/LadybirdBrowser/ladybird.git
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100 lines
3.6 KiB
C++
100 lines
3.6 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/FunctionObject.h>
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#include <LibJS/Runtime/NativeFunction.h>
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#include <LibJS/Runtime/Realm.h>
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#include <LibJS/Runtime/VM.h>
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#include <LibWasm/AbstractMachine/AbstractMachine.h>
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#include <LibWeb/Bindings/InstancePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/WebAssembly/Instance.h>
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#include <LibWeb/WebAssembly/Memory.h>
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#include <LibWeb/WebAssembly/Module.h>
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#include <LibWeb/WebAssembly/Table.h>
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#include <LibWeb/WebAssembly/WebAssembly.h>
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namespace Web::WebAssembly {
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WebIDL::ExceptionOr<JS::NonnullGCPtr<Instance>> Instance::construct_impl(JS::Realm& realm, Module& module, Optional<JS::Handle<JS::Object>>& import_object)
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{
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// FIXME: Implement the importObject parameter.
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(void)import_object;
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auto& vm = realm.vm();
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auto index = TRY(Detail::instantiate_module(vm, module.module()));
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return MUST_OR_THROW_OOM(vm.heap().allocate<Instance>(realm, realm, index));
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}
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Instance::Instance(JS::Realm& realm, size_t index)
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: Bindings::PlatformObject(realm)
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, m_exports(Object::create(realm, nullptr))
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, m_index(index)
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{
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}
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JS::ThrowCompletionOr<void> Instance::initialize(JS::Realm& realm)
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{
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auto& vm = this->vm();
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::InstancePrototype>(realm, "WebAssembly.Instance"sv));
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auto& instance = *Detail::s_instantiated_modules[m_index];
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auto& cache = Detail::s_module_caches.at(m_index);
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for (auto& export_ : instance.exports()) {
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TRY(export_.value().visit(
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[&](Wasm::FunctionAddress const& address) -> JS::ThrowCompletionOr<void> {
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Optional<JS::GCPtr<JS::FunctionObject>> object = cache.function_instances.get(address);
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if (!object.has_value()) {
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object = Detail::create_native_function(vm, address, export_.name());
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cache.function_instances.set(address, *object);
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}
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m_exports->define_direct_property(export_.name(), *object, JS::default_attributes);
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return {};
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},
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[&](Wasm::MemoryAddress const& address) -> JS::ThrowCompletionOr<void> {
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Optional<JS::GCPtr<Memory>> object = cache.memory_instances.get(address);
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if (!object.has_value()) {
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object = MUST_OR_THROW_OOM(heap().allocate<Memory>(realm, realm, address));
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cache.memory_instances.set(address, *object);
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}
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m_exports->define_direct_property(export_.name(), *object, JS::default_attributes);
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return {};
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},
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[&](Wasm::TableAddress const& address) -> JS::ThrowCompletionOr<void> {
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Optional<JS::GCPtr<Table>> object = cache.table_instances.get(address);
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if (!object.has_value()) {
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object = MUST_OR_THROW_OOM(heap().allocate<Table>(realm, realm, address));
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cache.table_instances.set(address, *object);
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}
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m_exports->define_direct_property(export_.name(), *object, JS::default_attributes);
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return {};
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},
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[&](auto const&) -> JS::ThrowCompletionOr<void> {
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// FIXME: Implement other exports!
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return {};
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}));
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}
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MUST(m_exports->set_integrity_level(IntegrityLevel::Frozen));
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return {};
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}
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void Instance::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_exports);
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}
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}
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