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// Copyright 2015 The Chromium Authors
// 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_PLATFORM_LOADER_LINK_HEADER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_LINK_HEADER_H_
#include <optional>
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class LinkHeader {
DISALLOW_NEW();
public:
const String& Url() const { return url_; }
const String& Rel() const { return rel_; }
const String& As() const { return as_; }
const String& MimeType() const { return mime_type_; }
const String& Media() const { return media_; }
const String& CrossOrigin() const { return cross_origin_; }
const String& Nonce() const { return nonce_; }
const String& Integrity() const { return integrity_; }
const String& ImageSrcset() const { return image_srcset_; }
const String& ImageSizes() const { return image_sizes_; }
const String& HeaderIntegrity() const { return header_integrity_; }
const String& Variants() const { return variants_; }
const String& VariantKey() const { return variant_key_; }
const String& Blocking() const { return blocking_; }
const String& ReferrerPolicy() const { return referrer_policy_; }
const String& FetchPriority() const { return fetch_priority_; }
const std::optional<String>& Anchor() const { return anchor_; }
bool Valid() const { return is_valid_; }
bool IsViewportDependent() const {
return !Media().empty() || !ImageSrcset().empty() || !ImageSizes().empty();
}
enum LinkParameterName {
kLinkParameterRel,
kLinkParameterAnchor,
kLinkParameterTitle,
kLinkParameterMedia,
kLinkParameterType,
kLinkParameterRev,
kLinkParameterHreflang,
// Beyond this point, only link-extension parameters
kLinkParameterUnknown,
kLinkParameterCrossOrigin,
kLinkParameterAs,
kLinkParameterNonce,
kLinkParameterIntegrity,
kLinkParameterImageSrcset,
kLinkParameterImageSizes,
kLinkParameterHeaderIntegrity,
kLinkParameterVariants,
kLinkParameterVariantKey,
kLinkParameterBlocking,
kLinkParameterReferrerPolicy,
kLinkParameterFetchPriority,
};
private:
friend class LinkHeaderSet;
template <typename Iterator>
LinkHeader(Iterator begin, Iterator end);
void SetValue(LinkParameterName, const String& value);
String url_;
String rel_;
String as_;
String mime_type_;
String media_;
String cross_origin_;
String nonce_;
String integrity_;
String image_srcset_;
String image_sizes_;
String header_integrity_;
String variants_;
String variant_key_;
String blocking_;
String referrer_policy_;
String fetch_priority_;
std::optional<String> anchor_;
bool is_valid_;
};
class PLATFORM_EXPORT LinkHeaderSet {
STACK_ALLOCATED();
public:
LinkHeaderSet(const String& header);
Vector<LinkHeader>::const_iterator begin() const {
return header_set_.begin();
}
Vector<LinkHeader>::const_iterator end() const { return header_set_.end(); }
LinkHeader& operator[](wtf_size_t i) { return header_set_[i]; }
wtf_size_t size() { return header_set_.size(); }
private:
Vector<LinkHeader> header_set_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_LINK_HEADER_H_
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