12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394 |
- /*
- * Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <LibJS/Runtime/GlobalObject.h>
- #include <LibJS/Runtime/TypedArray.h>
- #include <LibWeb/Bindings/Intrinsics.h>
- #include <LibWeb/WebAssembly/WebAssemblyObject.h>
- #include <LibWeb/WebAssembly/WebAssemblyTableConstructor.h>
- #include <LibWeb/WebAssembly/WebAssemblyTableObject.h>
- #include <LibWeb/WebAssembly/WebAssemblyTablePrototype.h>
- namespace Web::Bindings {
- WebAssemblyTableConstructor::WebAssemblyTableConstructor(JS::Realm& realm)
- : NativeFunction(*realm.intrinsics().function_prototype())
- {
- }
- WebAssemblyTableConstructor::~WebAssemblyTableConstructor() = default;
- JS::ThrowCompletionOr<JS::Value> WebAssemblyTableConstructor::call()
- {
- return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "WebAssembly.Table");
- }
- JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> WebAssemblyTableConstructor::construct(FunctionObject&)
- {
- auto& vm = this->vm();
- auto& realm = *vm.current_realm();
- auto descriptor = TRY(vm.argument(0).to_object(vm));
- auto element_value = TRY(descriptor->get("element"));
- if (!element_value.is_string())
- return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidHint, TRY_OR_THROW_OOM(vm, element_value.to_string_without_side_effects()));
- auto element = TRY(element_value.as_string().deprecated_string());
- Optional<Wasm::ValueType> reference_type;
- if (element == "anyfunc"sv)
- reference_type = Wasm::ValueType(Wasm::ValueType::FunctionReference);
- else if (element == "externref"sv)
- reference_type = Wasm::ValueType(Wasm::ValueType::ExternReference);
- if (!reference_type.has_value())
- return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidHint, element);
- auto initial_value = TRY(descriptor->get("initial"));
- auto maximum_value = TRY(descriptor->get("maximum"));
- auto initial = TRY(initial_value.to_u32(vm));
- Optional<u32> maximum;
- if (!maximum_value.is_undefined())
- maximum = TRY(maximum_value.to_u32(vm));
- if (maximum.has_value() && maximum.value() < initial)
- return vm.throw_completion<JS::RangeError>("maximum should be larger than or equal to initial"sv);
- auto value_value = TRY(descriptor->get("value"));
- auto reference_value = TRY([&]() -> JS::ThrowCompletionOr<Wasm::Value> {
- if (value_value.is_undefined())
- return Wasm::Value(*reference_type, 0ull);
- return to_webassembly_value(vm, value_value, *reference_type);
- }());
- auto& reference = reference_value.value().get<Wasm::Reference>();
- auto address = WebAssemblyObject::s_abstract_machine.store().allocate(Wasm::TableType { *reference_type, Wasm::Limits { initial, maximum } });
- if (!address.has_value())
- return vm.throw_completion<JS::TypeError>("Wasm Table allocation failed"sv);
- auto& table = *WebAssemblyObject::s_abstract_machine.store().get(*address);
- for (auto& element : table.elements())
- element = reference;
- return MUST_OR_THROW_OOM(vm.heap().allocate<WebAssemblyTableObject>(realm, realm, *address));
- }
- JS::ThrowCompletionOr<void> WebAssemblyTableConstructor::initialize(JS::Realm& realm)
- {
- auto& vm = this->vm();
- MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
- define_direct_property(vm.names.prototype, &Bindings::ensure_web_prototype<WebAssemblyTablePrototype>(realm, "WebAssembly.Table"), 0);
- define_direct_property(vm.names.length, JS::Value(1), JS::Attribute::Configurable);
- return {};
- }
- }
|