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-rw-r--r--uriloader/preload/PreloadHashKey.h109
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diff --git a/uriloader/preload/PreloadHashKey.h b/uriloader/preload/PreloadHashKey.h
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+/* 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