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LibWeb: Support WASM modules

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This adds support for importing WASM modules in JavaScript and vice
versa.
This commit is contained in:
Glenn Skrzypczak
2025-09-19 22:18:28 +02:00
committed by Shannon Booth
parent 7392d2a2f4
commit e5dab9e1c7
Notes: github-actions[bot] 2026-04-03 19:22:16 +00:00 
Author: https://github.com/skyz1
Commit: https://github.com/LadybirdBrowser/ladybird/commit/e5dab9e1c7a
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6029
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/konradekk
Reviewed-by: https://github.com/shannonbooth ✅
30 changed files with 759 additions and 77 deletions
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47
Libraries/LibWeb/WebAssembly/WebAssemblyModule.h Normal file
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/*
* Copyright (c) 2025, Glenn Skrzypczak <glenn.skrzypczak@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/CyclicModule.h>
#include <LibJS/Export.h>
#include <LibWasm/AbstractMachine/AbstractMachine.h>
#include <LibWeb/Forward.h>
namespace Web::WebAssembly {
// 16.2.1.6 Source Text Module Records, https://tc39.es/ecma262/#sec-source-text-module-records
class WebAssemblyModule final : public JS::CyclicModule {
GC_CELL(WebAssemblyModule, JS::CyclicModule);
GC_DECLARE_ALLOCATOR(WebAssemblyModule);
public:
virtual ~WebAssemblyModule() override;
static JS::ThrowCompletionOr<GC::Ref<WebAssemblyModule>> parse(ByteBuffer bytes, JS::Realm&, StringView filename = {}, JS::Script::HostDefined* host_defined = nullptr);
Vector<Utf16FlyString> export_name_list();
virtual Vector<Utf16FlyString> get_exported_names(JS::VM& vm, HashTable<Module const*>& export_star_set) override;
virtual JS::ResolvedBinding resolve_export(JS::VM& vm, Utf16FlyString const& export_name, Vector<JS::ResolvedBinding> resolve_set = {}) override;
protected:
virtual JS::ThrowCompletionOr<void> initialize_environment(JS::VM& vm) override;
virtual JS::ThrowCompletionOr<void> execute_module(JS::VM& vm, GC::Ptr<JS::PromiseCapability> capability) override;
private:
WebAssemblyModule(JS::Realm&, StringView filename, WebAssembly::Module& module_source, JS::Script::HostDefined* host_defined, Vector<JS::ModuleRequest> requested_modules);
virtual void visit_edges(Cell::Visitor&) override;
GC::Ptr<Instance> m_instance; // [[Instance]]
GC::Ref<WebAssembly::Module> m_module_source; // [[ModuleSource]]
GC::Ptr<WebAssemblyModule> m_module_record; // [[ModuleRecord]]
Optional<Vector<Utf16FlyString>> m_cached_export_name_list;
};
}