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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_LOADER_MODULESCRIPT_MODULE_SCRIPT_CREATION_PARAMS_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_MODULESCRIPT_MODULE_SCRIPT_CREATION_PARAMS_H_
#include "base/optional.h"
#include "third_party/blink/public/platform/web_url_request.h"
#include "third_party/blink/renderer/platform/bindings/parkable_string.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/loader/fetch/cached_metadata_handler.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
// ModuleScriptCreationParams contains parameters for creating ModuleScript.
class ModuleScriptCreationParams {
DISALLOW_NEW();
public:
ModuleScriptCreationParams(const KURL& response_url,
const ParkableString& source_text,
SingleCachedMetadataHandler* cache_handler,
network::mojom::CredentialsMode credentials_mode)
: response_url_(response_url),
is_isolated_(false),
source_text_(source_text),
isolated_source_text_(),
cache_handler_(cache_handler),
credentials_mode_(credentials_mode) {}
~ModuleScriptCreationParams() = default;
ModuleScriptCreationParams IsolatedCopy() const {
String isolated_source_text =
isolated_source_text_ ? isolated_source_text_.IsolatedCopy()
: GetSourceText().ToString().IsolatedCopy();
return ModuleScriptCreationParams(GetResponseUrl().Copy(),
isolated_source_text,
GetFetchCredentialsMode());
}
const KURL& GetResponseUrl() const { return response_url_; }
const ParkableString& GetSourceText() const {
if (is_isolated_) {
source_text_ = ParkableString(isolated_source_text_.ReleaseImpl());
isolated_source_text_ = String();
is_isolated_ = false;
}
return source_text_;
}
SingleCachedMetadataHandler* CacheHandler() const { return cache_handler_; }
network::mojom::CredentialsMode GetFetchCredentialsMode() const {
return credentials_mode_;
}
bool IsSafeToSendToAnotherThread() const {
return response_url_.IsSafeToSendToAnotherThread() && is_isolated_;
}
private:
// Creates an isolated copy.
ModuleScriptCreationParams(const KURL& response_url,
const String& isolated_source_text,
network::mojom::CredentialsMode credentials_mode)
: response_url_(response_url),
is_isolated_(true),
source_text_(),
isolated_source_text_(isolated_source_text),
credentials_mode_(credentials_mode) {}
const KURL response_url_;
// Mutable because an isolated copy can become bound to a thread when
// calling GetSourceText().
mutable bool is_isolated_;
mutable ParkableString source_text_;
mutable String isolated_source_text_;
// |cache_handler_| is cleared when crossing thread boundaries.
Persistent<SingleCachedMetadataHandler> cache_handler_;
const network::mojom::CredentialsMode credentials_mode_;
};
} // namespace blink
namespace WTF {
// Creates a deep copy because |response_url_| and |source_text_| are not
// cross-thread-transfer-safe.
template <>
struct CrossThreadCopier<blink::ModuleScriptCreationParams> {
static blink::ModuleScriptCreationParams Copy(
const blink::ModuleScriptCreationParams& params) {
return params.IsolatedCopy();
}
};
} // namespace WTF
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_MODULESCRIPT_MODULE_SCRIPT_CREATION_PARAMS_H_
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