/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef PreloadHashKey_h__
#define PreloadHashKey_h__
#include "mozilla/CORSMode.h"
#include "mozilla/css/SheetParsingMode.h"
#include "js/loader/ScriptKind.h"
#include "nsURIHashKey.h"
class nsIPrincipal;
namespace JS::loader {
enum class ScriptKind;
}
namespace mozilla {
namespace css {
class SheetLoadData;
}
/**
* This key is used for coalescing and lookup of preloading or regular
* speculative loads. It consists of:
* - the resource type, which is the value of the 'as' attribute
* - the URI of the resource
* - set of attributes that is common to all resource types
* - resource-type-specific attributes that we use to distinguish loads that has
* to be treated separately, some of these attributes may remain at their
* default values
*/
class PreloadHashKey :
public nsURIHashKey {
public:
enum class ResourceType : uint8_t { NONE, SCRIPT, STYLE, IMAGE, FONT, FETCH };
using KeyType =
const PreloadHashKey&;
using KeyTypePointer =
const PreloadHashKey*;
PreloadHashKey() =
default;
PreloadHashKey(
const nsIURI* aKey, ResourceType aAs);
explicit PreloadHashKey(
const PreloadHashKey* aKey);
PreloadHashKey(PreloadHashKey&& aToMove);
PreloadHashKey&
operator=(
const PreloadHashKey& aOther);
// Construct key for "script"
static PreloadHashKey CreateAsScript(nsIURI* aURI, CORSMode aCORSMode,
JS::loader::ScriptKind aScriptKind);
static PreloadHashKey CreateAsScript(nsIURI* aURI,
const nsAString& aCrossOrigin,
const nsAString& aType);
// Construct key for "style"
static PreloadHashKey CreateAsStyle(nsIURI* aURI, nsIPrincipal* aPrincipal,
CORSMode aCORSMode,
css::SheetParsingMode aParsingMode);
static PreloadHashKey CreateAsStyle(css::SheetLoadData&);
// Construct key for "image"
static PreloadHashKey CreateAsImage(nsIURI* aURI, nsIPrincipal* aPrincipal,
CORSMode aCORSMode);
// Construct key for "fetch"
static PreloadHashKey CreateAsFetch(nsIURI* aURI, CORSMode aCORSMode);
static PreloadHashKey CreateAsFetch(nsIURI* aURI,
const nsAString& aCrossOrigin);
// Construct key for "font"
static PreloadHashKey CreateAsFont(nsIURI* aURI, CORSMode aCORSMode);
KeyType GetKey()
const {
return *
this; }
KeyTypePointer GetKeyPointer()
const {
return this; }
static KeyTypePointer KeyToPointer(KeyType aKey) {
return &aKey; }
bool KeyEquals(KeyTypePointer aOther)
const;
static PLDHashNumber HashKey(KeyTypePointer aKey);
ResourceType As()
const {
return mAs; }
#ifdef MOZILLA_INTERNAL_API
size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const {
// Bug 1627752
return 0;
}
#endif
enum { ALLOW_MEMMOVE =
true };
private:
// Attributes common to all resource types
ResourceType mAs = ResourceType::NONE;
CORSMode mCORSMode = CORS_NONE;
nsCOMPtr<nsIPrincipal> mPrincipal;
struct {
JS::loader::ScriptKind mScriptKind = JS::loader::ScriptKind::eClassic;
} mScript;
struct {
css::SheetParsingMode mParsingMode = css::eAuthorSheetFeatures;
} mStyle;
};
}
// namespace mozilla
#endif
