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333ba93d49
These cannot be implemented "correctly" as the set of native errors as defined by ecma262 is closed, but we can get pretty close.
166 lines
10 KiB
C++
166 lines
10 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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#pragma once
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#include <AK/Optional.h>
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#include <LibGC/Root.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/NativeFunction.h>
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#include <LibJS/Runtime/PrototypeObject.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibWasm/AbstractMachine/AbstractMachine.h>
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#include <LibWeb/Forward.h>
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namespace Web::WebAssembly {
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void visit_edges(JS::Object&, JS::Cell::Visitor&);
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void finalize(JS::Object&);
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void initialize(JS::Object&, JS::Realm&);
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bool validate(JS::VM&, GC::Root<WebIDL::BufferSource>& bytes);
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WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> compile(JS::VM&, GC::Root<WebIDL::BufferSource>& bytes);
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WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> compile_streaming(JS::VM&, GC::Root<WebIDL::Promise> source);
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WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> instantiate(JS::VM&, GC::Root<WebIDL::BufferSource>& bytes, Optional<GC::Root<JS::Object>>& import_object);
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WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> instantiate(JS::VM&, Module const& module_object, Optional<GC::Root<JS::Object>>& import_object);
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WebIDL::ExceptionOr<GC::Ref<WebIDL::Promise>> instantiate_streaming(JS::VM&, GC::Root<WebIDL::Promise> source, Optional<GC::Root<JS::Object>>& import_object);
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namespace Detail {
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struct CompiledWebAssemblyModule : public RefCounted<CompiledWebAssemblyModule> {
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explicit CompiledWebAssemblyModule(NonnullRefPtr<Wasm::Module> module)
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: module(move(module))
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{
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}
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NonnullRefPtr<Wasm::Module> module;
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};
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class WebAssemblyCache {
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public:
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void add_compiled_module(NonnullRefPtr<CompiledWebAssemblyModule> module) { m_compiled_modules.append(module); }
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void add_function_instance(Wasm::FunctionAddress address, GC::Ptr<JS::NativeFunction> function) { m_function_instances.set(address, function); }
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void add_imported_object(GC::Ptr<JS::Object> object) { m_imported_objects.set(object); }
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void add_extern_value(Wasm::ExternAddress address, JS::Value value) { m_extern_values.set(address, value); }
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void add_global_instance(Wasm::GlobalAddress address, GC::Ptr<WebAssembly::Global> global) { m_global_instances.set(address, global); }
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Optional<GC::Ptr<JS::NativeFunction>> get_function_instance(Wasm::FunctionAddress address) { return m_function_instances.get(address); }
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Optional<JS::Value> get_extern_value(Wasm::ExternAddress address) { return m_extern_values.get(address); }
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Optional<GC::Ptr<WebAssembly::Global>> get_global_instance(Wasm::GlobalAddress address) { return m_global_instances.get(address); }
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HashMap<Wasm::FunctionAddress, GC::Ptr<JS::NativeFunction>> function_instances() const { return m_function_instances; }
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HashMap<Wasm::ExternAddress, JS::Value> extern_values() const { return m_extern_values; }
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HashMap<Wasm::GlobalAddress, GC::Ptr<WebAssembly::Global>> global_instances() const { return m_global_instances; }
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HashTable<GC::Ptr<JS::Object>> imported_objects() const { return m_imported_objects; }
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Wasm::AbstractMachine& abstract_machine() { return m_abstract_machine; }
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private:
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HashMap<Wasm::FunctionAddress, GC::Ptr<JS::NativeFunction>> m_function_instances;
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HashMap<Wasm::ExternAddress, JS::Value> m_extern_values;
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HashMap<Wasm::GlobalAddress, GC::Ptr<WebAssembly::Global>> m_global_instances;
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Vector<NonnullRefPtr<CompiledWebAssemblyModule>> m_compiled_modules;
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HashTable<GC::Ptr<JS::Object>> m_imported_objects;
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Wasm::AbstractMachine m_abstract_machine;
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};
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class ExportedWasmFunction final : public JS::NativeFunction {
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JS_OBJECT(ExportedWasmFunction, JS::NativeFunction);
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GC_DECLARE_ALLOCATOR(ExportedWasmFunction);
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public:
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static GC::Ref<ExportedWasmFunction> create(JS::Realm&, FlyString const& name, ESCAPING Function<JS::ThrowCompletionOr<JS::Value>(JS::VM&)>, Wasm::FunctionAddress);
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virtual ~ExportedWasmFunction() override = default;
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Wasm::FunctionAddress exported_address() const { return m_exported_address; }
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protected:
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ExportedWasmFunction(FlyString name, AK::Function<JS::ThrowCompletionOr<JS::Value>(JS::VM&)>, Wasm::FunctionAddress, Object& prototype);
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private:
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Wasm::FunctionAddress m_exported_address;
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};
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WebAssemblyCache& get_cache(JS::Realm&);
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JS::ThrowCompletionOr<NonnullOwnPtr<Wasm::ModuleInstance>> instantiate_module(JS::VM&, Wasm::Module const&, GC::Ptr<JS::Object> import_object);
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JS::ThrowCompletionOr<NonnullRefPtr<CompiledWebAssemblyModule>> compile_a_webassembly_module(JS::VM&, ByteBuffer);
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JS::NativeFunction* create_native_function(JS::VM&, Wasm::FunctionAddress address, String const& name, Instance* instance = nullptr);
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JS::ThrowCompletionOr<Wasm::Value> to_webassembly_value(JS::VM&, JS::Value value, Wasm::ValueType const& type);
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Wasm::Value default_webassembly_value(JS::VM&, Wasm::ValueType type);
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JS::Value to_js_value(JS::VM&, Wasm::Value& wasm_value, Wasm::ValueType type);
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extern HashMap<GC::Ptr<JS::Object>, WebAssemblyCache> s_caches;
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}
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// NOTE: This is technically not allowed by ECMA262, as the set of native errors is closed
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// our implementation uses this fact in places, but for the purposes of wasm returning
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// *some* kind of error, named e.g. 'WebAssembly.RuntimeError', this is sufficient.
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#define DECLARE_WASM_NATIVE_ERROR(ClassName, snake_name, PrototypeName, ConstructorName) \
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class ClassName final : public JS::Error { \
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JS_OBJECT(ClassName, Error); \
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GC_DECLARE_ALLOCATOR(ClassName); \
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\
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public: \
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static GC::Ref<ClassName> create(JS::Realm&); \
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static GC::Ref<ClassName> create(JS::Realm&, String message); \
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static GC::Ref<ClassName> create(JS::Realm&, StringView message); \
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\
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explicit ClassName(Object& prototype); \
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virtual ~ClassName() override = default; \
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};
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#define DECLARE_WASM_NATIVE_ERROR_CONSTRUCTOR(ClassName, snake_name, PrototypeName, ConstructorName) \
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class ConstructorName final : public JS::NativeFunction { \
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JS_OBJECT(ConstructorName, NativeFunction); \
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GC_DECLARE_ALLOCATOR(ConstructorName); \
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\
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public: \
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virtual void initialize(JS::Realm&) override; \
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virtual ~ConstructorName() override; \
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virtual JS::ThrowCompletionOr<JS::Value> call() override; \
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virtual JS::ThrowCompletionOr<GC::Ref<JS::Object>> construct(JS::FunctionObject& new_target) override; \
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\
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private: \
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explicit ConstructorName(JS::Realm&); \
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\
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virtual bool has_constructor() const override \
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{ \
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return true; \
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} \
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};
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#define DECLARE_WASM_NATIVE_ERROR_PROTOTYPE(ClassName, snake_name, PrototypeName, ConstructorName) \
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class PrototypeName final : public JS::PrototypeObject<PrototypeName, ClassName> { \
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JS_PROTOTYPE_OBJECT(PrototypeName, ClassName, ClassName); \
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GC_DECLARE_ALLOCATOR(PrototypeName); \
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\
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public: \
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virtual void initialize(JS::Realm&) override; \
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virtual ~PrototypeName() override = default; \
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\
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private: \
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explicit PrototypeName(JS::Realm&); \
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};
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DECLARE_WASM_NATIVE_ERROR_CONSTRUCTOR(CompilError, compile_error, CompileErrorPrototype, CompileErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR_CONSTRUCTOR(LinkError, link_error, LinkErrorPrototype, LinkErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR_CONSTRUCTOR(RuntimeError, runtime_error, RuntimeErrorPrototype, RuntimeErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR(CompileError, compile_error, CompileErrorPrototype, CompileErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR(LinkError, link_error, LinkErrorPrototype, LinkErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR(RuntimeError, runtime_error, LinkErrorPrototype, LinkErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR_PROTOTYPE(CompileError, compile_error, CompileErrorPrototype, CompileErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR_PROTOTYPE(LinkError, link_error, LinkErrorPrototype, LinkErrorConstructor)
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DECLARE_WASM_NATIVE_ERROR_PROTOTYPE(RuntimeError, runtime_error, RuntimeErrorPrototype, LinkErrorConstructor)
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#undef DECLARE_WASM_NATIVE_ERROR
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#undef DECLARE_WASM_NATIVE_ERROR_PROTOTYPE
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#undef DECLARE_WASM_NATIVE_ERROR_CONSTRUCTOR
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}
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