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LibJS: Add support for JSON modules

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We now have one supported assertion: 'type' if that is 'json' we attempt
to parse the module as JSON.
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davidot 2022-01-27 14:51:21 +01:00 • committed by Linus Groh
parent 202de6ed25
commit 6b5c882af3
8 changed files with 277 additions and 24 deletions
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36
Userland/Libraries/LibJS/SyntheticModule.h Normal file
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/*
* Copyright (c) 2022, David Tuin <davidot@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Module.h>
namespace JS {
// 1.2 Synthetic Module Records, https://tc39.es/proposal-json-modules/#sec-synthetic-module-records
class SyntheticModule final : public Module {
public:
using EvaluationFunction = Function<ThrowCompletionOr<void>(SyntheticModule&)>;
SyntheticModule(Vector<FlyString> export_names, EvaluationFunction evaluation_steps, Realm& realm, StringView filename);
static NonnullRefPtr<SyntheticModule> create_default_export_synthetic_module(Value default_export, Realm& realm, StringView filename);
ThrowCompletionOr<void> set_synthetic_module_export(FlyString const& export_name, Value export_value);
virtual ThrowCompletionOr<void> link(VM& vm) override;
virtual ThrowCompletionOr<Promise*> evaluate(VM& vm) override;
virtual ThrowCompletionOr<Vector<FlyString>> get_exported_names(VM& vm, Vector<Module*> export_star_set) override;
virtual ThrowCompletionOr<ResolvedBinding> resolve_export(VM& vm, FlyString const& export_name, Vector<ResolvedBinding> resolve_set) override;
private:
Vector<FlyString> m_export_names; // [[ExportNames]]
EvaluationFunction m_evaluation_steps; // [[EvaluationSteps]]
};
ThrowCompletionOr<NonnullRefPtr<Module>> parse_json_module(StringView source_text, Realm& realm, StringView filename);
}