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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_MAP_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_MAP_H_
#include "base/macros.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/bindings/name_client.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_member.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/kurl_hash.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
namespace blink {
class FetchClientSettingsObjectSnapshot;
class Modulator;
class ModuleScript;
class ModuleScriptFetchRequest;
class ModuleScriptLoaderRegistry;
class SingleModuleClient;
enum class ModuleGraphLevel;
enum class ModuleScriptCustomFetchType;
// A ModuleMap implements "module map" spec.
// https://html.spec.whatwg.org/multipage/webappapis.html#module-map
class CORE_EXPORT ModuleMap final : public GarbageCollected<ModuleMap>,
public NameClient {
class Entry;
public:
static ModuleMap* Create(Modulator* modulator) {
return MakeGarbageCollected<ModuleMap>(modulator);
}
explicit ModuleMap(Modulator*);
void Trace(blink::Visitor*);
const char* NameInHeapSnapshot() const override { return "ModuleMap"; }
// https://html.spec.whatwg.org/multipage/webappapis.html#fetch-a-single-module-script
void FetchSingleModuleScript(
const ModuleScriptFetchRequest&,
FetchClientSettingsObjectSnapshot* fetch_client_settings_object,
ModuleGraphLevel,
ModuleScriptCustomFetchType,
SingleModuleClient*);
// Synchronously get the ModuleScript for a given URL.
// If the URL wasn't fetched, or is currently being fetched, this returns a
// nullptr.
ModuleScript* GetFetchedModuleScript(const KURL&) const;
Modulator* GetModulator() { return modulator_; }
private:
using MapImpl = HeapHashMap<KURL, TraceWrapperMember<Entry>>;
// A module map is a map of absolute URLs to map entry.
MapImpl map_;
Member<Modulator> modulator_;
Member<ModuleScriptLoaderRegistry> loader_registry_;
DISALLOW_COPY_AND_ASSIGN(ModuleMap);
};
} // namespace blink
#endif