mirror of
https://github.com/RGBCube/serenity
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61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@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 <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/WebAssembly/WebAssemblyMemoryConstructor.h>
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#include <LibWeb/WebAssembly/WebAssemblyMemoryPrototype.h>
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#include <LibWeb/WebAssembly/WebAssemblyObject.h>
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namespace Web::Bindings {
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WebAssemblyMemoryConstructor::WebAssemblyMemoryConstructor(JS::Realm& realm)
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: NativeFunction(*realm.intrinsics().function_prototype())
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{
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}
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WebAssemblyMemoryConstructor::~WebAssemblyMemoryConstructor() = default;
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JS::ThrowCompletionOr<JS::Value> WebAssemblyMemoryConstructor::call()
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{
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return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "WebAssembly.Memory");
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}
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JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> WebAssemblyMemoryConstructor::construct(FunctionObject&)
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{
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auto& vm = this->vm();
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auto& realm = *vm.current_realm();
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auto descriptor = TRY(vm.argument(0).to_object(vm));
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auto initial_value = TRY(descriptor->get("initial"));
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auto maximum_value = TRY(descriptor->get("maximum"));
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if (!initial_value.is_number())
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return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "Number");
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u32 initial = TRY(initial_value.to_u32(vm));
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Optional<u32> maximum;
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if (!maximum_value.is_undefined())
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maximum = TRY(maximum_value.to_u32(vm));
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auto address = WebAssemblyObject::s_abstract_machine.store().allocate(Wasm::MemoryType { Wasm::Limits { initial, maximum } });
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if (!address.has_value())
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return vm.throw_completion<JS::TypeError>("Wasm Memory allocation failed");
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return vm.heap().allocate<WebAssemblyMemoryObject>(realm, realm, *address);
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}
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void WebAssemblyMemoryConstructor::initialize(JS::Realm& realm)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(realm);
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define_direct_property(vm.names.prototype, &Bindings::ensure_web_prototype<WebAssemblyMemoryPrototype>(realm, "WebAssemblyMemoryPrototype"), 0);
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define_direct_property(vm.names.length, JS::Value(1), JS::Attribute::Configurable);
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}
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}
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