2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
83 lines
2.8 KiB
C++
83 lines
2.8 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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#pragma once
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#include <LibJS/Runtime/Object.h>
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#include <LibWasm/AbstractMachine/AbstractMachine.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.h>
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namespace Web::Bindings {
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class WebAssemblyMemoryObject;
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class WebAssemblyTableObject;
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JS::ThrowCompletionOr<size_t> parse_module(JS::VM&, JS::Object* buffer);
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JS::NativeFunction* create_native_function(JS::VM&, Wasm::FunctionAddress address, DeprecatedString const& name);
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JS::Value to_js_value(JS::VM&, Wasm::Value& wasm_value);
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JS::ThrowCompletionOr<Wasm::Value> to_webassembly_value(JS::VM&, JS::Value value, Wasm::ValueType const& type);
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class WebAssemblyObject final : public JS::Object {
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JS_OBJECT(WebAssemblyObject, JS::Object);
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public:
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explicit WebAssemblyObject(JS::Realm&);
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virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
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virtual ~WebAssemblyObject() override = default;
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virtual void visit_edges(Cell::Visitor&) override;
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static JS::ThrowCompletionOr<size_t> instantiate_module(JS::VM&, Wasm::Module const&);
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struct CompiledWebAssemblyModule {
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explicit CompiledWebAssemblyModule(Wasm::Module&& module)
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: module(move(module))
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{
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}
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Wasm::Module module;
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};
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// FIXME: These should just be members of the module (instance) object,
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// but the module needs to stick around while its instance is alive
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// so ideally this would be a refcounted object, shared between
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// WebAssemblyModuleObject's and WebAssemblyInstantiatedModuleObject's.
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struct ModuleCache {
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HashMap<Wasm::FunctionAddress, JS::FunctionObject*> function_instances;
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HashMap<Wasm::MemoryAddress, WebAssemblyMemoryObject*> memory_instances;
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HashMap<Wasm::TableAddress, WebAssemblyTableObject*> table_instances;
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};
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struct GlobalModuleCache {
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HashMap<Wasm::FunctionAddress, JS::NativeFunction*> function_instances;
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};
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static NonnullOwnPtrVector<CompiledWebAssemblyModule> s_compiled_modules;
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static NonnullOwnPtrVector<Wasm::ModuleInstance> s_instantiated_modules;
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static Vector<ModuleCache> s_module_caches;
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static GlobalModuleCache s_global_cache;
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static Wasm::AbstractMachine s_abstract_machine;
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private:
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JS_DECLARE_NATIVE_FUNCTION(validate);
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JS_DECLARE_NATIVE_FUNCTION(compile);
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JS_DECLARE_NATIVE_FUNCTION(instantiate);
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};
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class WebAssemblyMemoryObject final : public JS::Object {
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JS_OBJECT(WebAssemblyMemoryObject, JS::Object);
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public:
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WebAssemblyMemoryObject(JS::Realm&, Wasm::MemoryAddress);
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virtual ~WebAssemblyMemoryObject() override = default;
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auto address() const { return m_address; }
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private:
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Wasm::MemoryAddress m_address;
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};
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}
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