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LibJS: Implement HostResolveImportedModule for LibJS

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This loads modules with relative paths from the referencing module.
In this commit the only way to run a module is via the interpreter
which can link and evaluate a module (and all its dependencies).
This commit is contained in:
davidot 2022-01-19 01:22:58 +01:00 • committed by Linus Groh
parent 1b8ccf9a66
commit 779e677467
4 changed files with 210 additions and 6 deletions
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19
Userland/Libraries/LibJS/Runtime/VM.h
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@ -1,7 +1,7 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2021, David Tuin <davidot@serenityos.org>
* Copyright (c) 2021-2022, David Tuin <davidot@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -239,6 +239,9 @@ public:
void save_execution_context_stack();
void restore_execution_context_stack();
// Do not call this method unless you are sure this is the only and first module to be loaded in this vm.
ThrowCompletionOr<void> link_and_eval_module(Badge<Interpreter>, SourceTextModule& module);
ScriptOrModule get_active_script_or_module() const;
Function<ThrowCompletionOr<NonnullRefPtr<Module>>(ScriptOrModule, ModuleRequest const&)> host_resolve_imported_module;
@ -256,6 +259,9 @@ private:
ThrowCompletionOr<void> property_binding_initialization(BindingPattern const& binding, Value value, Environment* environment, GlobalObject& global_object);
ThrowCompletionOr<void> iterator_binding_initialization(BindingPattern const& binding, Iterator& iterator_record, Environment* environment, GlobalObject& global_object);
ThrowCompletionOr<NonnullRefPtr<Module>> resolve_imported_module(ScriptOrModule referencing_script_or_module, ModuleRequest const& specifier);
ThrowCompletionOr<void> link_and_eval_module(SourceTextModule& module);
Exception* m_exception { nullptr };
HashMap<String, PrimitiveString*> m_string_cache;
@ -278,6 +284,17 @@ private:
PrimitiveString* m_empty_string { nullptr };
PrimitiveString* m_single_ascii_character_strings[128] {};
struct StoredModule {
ScriptOrModule referencing_script_or_module;
String filepath;
NonnullRefPtr<Module> module;
bool has_once_started_linking { false };
};
StoredModule* get_stored_module(ScriptOrModule const& script_or_module, String const& filepath);
Vector<StoredModule> m_loaded_modules;
#define __JS_ENUMERATE(SymbolName, snake_name) \
Symbol* m_well_known_symbol_##snake_name { nullptr };
JS_ENUMERATE_WELL_KNOWN_SYMBOLS