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LibWeb: Implement fetching module scripts

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This patch adds various algorithms required to fetch and link module
scripts.

Some parts such as actually creating a request and error handling are
not implemented or use temporary non spec compliant code to get us
further.

Co-authored-by: davidot <davidot@serenityos.org>
This commit is contained in:
networkException 2022-10-03 21:04:15 +02:00 • committed by Andreas Kling
parent 4de4e1828a
commit f0c4f8931c
3 changed files with 401 additions and 0 deletions
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57
Userland/Libraries/LibWeb/HTML/Scripting/Fetching.h Normal file
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/*
* Copyright (c) 2022, networkException <networkexception@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/HTML/Scripting/ModuleScript.h>
namespace Web::HTML {
using ModuleCallback = Function<void(JavaScriptModuleScript const*)>;
class DescendantFetchingContext : public RefCounted<DescendantFetchingContext> {
public:
static NonnullRefPtr<DescendantFetchingContext> create() { return adopt_ref(*new DescendantFetchingContext); }
~DescendantFetchingContext() = default;
size_t pending_count() const { return m_pending_count; };
void set_pending_count(size_t count) { m_pending_count = count; }
void decrement_pending_count() { --m_pending_count; }
bool failed() const { return m_failed; }
void set_failed(bool failed) { m_failed = failed; }
void on_complete(JavaScriptModuleScript const* module_script) { m_on_complete(module_script); };
void set_on_complete(ModuleCallback on_complete) { m_on_complete = move(on_complete); }
private:
DescendantFetchingContext() = default;
size_t m_pending_count { 0 };
bool m_failed { false };
ModuleCallback m_on_complete;
};
String module_type_from_module_request(JS::ModuleRequest const&);
AK::URL resolve_module_specifier(JS::ModuleRequest const&, AK::URL const& base_url);
void fetch_internal_module_script_graph(JS::ModuleRequest const& module_request, EnvironmentSettingsObject& fetch_client_settings_object, StringView destination, EnvironmentSettingsObject& module_script_settings_object, HashTable<ModuleLocationTuple> const& visited_set, AK::URL const& referrer, ModuleCallback on_complete);
void fetch_external_module_script_graph(AK::URL const&, EnvironmentSettingsObject& settings_object, ModuleCallback on_complete);
void fetch_inline_module_script_graph(String const& filename, String const& source_text, AK::URL const& base_url, EnvironmentSettingsObject& settings_object, ModuleCallback on_complete);
void fetch_descendants_of_a_module_script(JavaScriptModuleScript const& module_script, EnvironmentSettingsObject& fetch_client_settings_object, StringView destination, HashTable<ModuleLocationTuple> visited_set, ModuleCallback callback);
void fetch_descendants_of_and_link_a_module_script(JavaScriptModuleScript const& module_script, EnvironmentSettingsObject& fetch_client_settings_object, StringView destination, HashTable<ModuleLocationTuple> const& visited_set, ModuleCallback on_complete);
enum class TopLevelModule {
Yes,
No
};
void fetch_single_module_script(AK::URL const&, EnvironmentSettingsObject& fetch_client_settings_object, StringView destination, EnvironmentSettingsObject& module_map_settings_object, AK::URL const& referrer, Optional<JS::ModuleRequest> const&, TopLevelModule, ModuleCallback callback);
}