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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_RECORD_RESOLVER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_RECORD_RESOLVER_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class ModuleRecord;
class ModuleScript;
// The ModuleRecordResolver interface is used from V8 module bindings
// when it need the ModuleRecord's descendants.
//
// When a module writes import 'x', the module is called the referrer, 'x' is
// the specifier, and the module identified by 'x' is the descendant.
// ModuleRecordResolver, given a referrer and specifier, can look up the
// descendant.
class CORE_EXPORT ModuleRecordResolver
: public GarbageCollected<ModuleRecordResolver> {
public:
virtual ~ModuleRecordResolver() = default;
virtual void Trace(Visitor* visitor) const {}
// Notifies the ModuleRecordResolver that a ModuleScript exists.
// This hook gives a chance for the resolver impl to populate module record
// identifier -> ModuleScript mapping entry.
virtual void RegisterModuleScript(const ModuleScript*) = 0;
// Notifies the ModuleRecordResolver to clear its ModuleScript mapping.
virtual void UnregisterModuleScript(const ModuleScript*) = 0;
virtual const ModuleScript* GetModuleScriptFromModuleRecord(
v8::Local<v8::Module>) const = 0;
// Implements "Runtime Semantics: HostResolveImportedModule"
// https://tc39.github.io/ecma262/#sec-hostresolveimportedmodule
// This returns a null ModuleRecord when an exception is thrown.
virtual v8::Local<v8::Module> Resolve(const ModuleRequest& module_request,
v8::Local<v8::Module> referrer,
ExceptionState&) = 0;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_RECORD_RESOLVER_H_
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