1 files changed, 136 insertions, 0 deletions
diff --git a/parser/html/nsHtml5SpeculativeLoad.cpp b/parser/html/nsHtml5SpeculativeLoad.cpp
new file mode 100644
index 0000000000..c637d02173
--- /dev/null
+++ b/parser/html/nsHtml5SpeculativeLoad.cpp
@@ -0,0 +1,136 @@
+/* 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/. */
+
+#include "nsHtml5SpeculativeLoad.h"
+#include "mozilla/Encoding.h"
+#include "nsHtml5TreeOpExecutor.h"
+
+using namespace mozilla;
+
+nsHtml5SpeculativeLoad::nsHtml5SpeculativeLoad()
+    : mOpCode(eSpeculativeLoadUninitialized),
+      mIsAsync(false),
+      mIsDefer(false),
+      mIsLinkPreload(false),
+      mEncoding(nullptr) {
+  MOZ_COUNT_CTOR(nsHtml5SpeculativeLoad);
+  new (&mCharsetOrSrcset) nsString;
+}
+
+nsHtml5SpeculativeLoad::~nsHtml5SpeculativeLoad() {
+  MOZ_COUNT_DTOR(nsHtml5SpeculativeLoad);
+  NS_ASSERTION(mOpCode != eSpeculativeLoadUninitialized,
+               "Uninitialized speculative load.");
+  if (mOpCode != eSpeculativeLoadSetDocumentCharset) {
+    mCharsetOrSrcset.~nsString();
+  }
+}
+
+void nsHtml5SpeculativeLoad::Perform(nsHtml5TreeOpExecutor* aExecutor) {
+  switch (mOpCode) {
+    case eSpeculativeLoadBase:
+      aExecutor->SetSpeculationBase(mUrlOrSizes);
+      break;
+    case eSpeculativeLoadCSP:
+      aExecutor->AddSpeculationCSP(
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity);
+      break;
+    case eSpeculativeLoadMetaReferrer:
+      aExecutor->UpdateReferrerInfoFromMeta(mReferrerPolicyOrIntegrity);
+      break;
+    case eSpeculativeLoadImage:
+      aExecutor->PreloadImage(
+          mUrlOrSizes, mCrossOriginOrMedia, mCharsetOrSrcset,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mReferrerPolicyOrIntegrity, mIsLinkPreload);
+      break;
+    case eSpeculativeLoadOpenPicture:
+      aExecutor->PreloadOpenPicture();
+      break;
+    case eSpeculativeLoadEndPicture:
+      aExecutor->PreloadEndPicture();
+      break;
+    case eSpeculativeLoadPictureSource:
+      aExecutor->PreloadPictureSource(
+          mCharsetOrSrcset, mUrlOrSizes,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mCrossOriginOrMedia);
+      break;
+    case eSpeculativeLoadScript:
+      aExecutor->PreloadScript(
+          mUrlOrSizes, mCharsetOrSrcset,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mCrossOriginOrMedia, mReferrerPolicyOrIntegrity,
+          mScriptReferrerPolicy, false, mIsAsync, mIsDefer, false,
+          mIsLinkPreload);
+      break;
+    case eSpeculativeLoadScriptFromHead:
+      aExecutor->PreloadScript(
+          mUrlOrSizes, mCharsetOrSrcset,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mCrossOriginOrMedia, mReferrerPolicyOrIntegrity,
+          mScriptReferrerPolicy, true, mIsAsync, mIsDefer, false,
+          mIsLinkPreload);
+      break;
+    case eSpeculativeLoadNoModuleScript:
+      aExecutor->PreloadScript(
+          mUrlOrSizes, mCharsetOrSrcset,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mCrossOriginOrMedia, mReferrerPolicyOrIntegrity,
+          mScriptReferrerPolicy, false, mIsAsync, mIsDefer, true,
+          mIsLinkPreload);
+      break;
+    case eSpeculativeLoadNoModuleScriptFromHead:
+      aExecutor->PreloadScript(
+          mUrlOrSizes, mCharsetOrSrcset,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mCrossOriginOrMedia, mReferrerPolicyOrIntegrity,
+          mScriptReferrerPolicy, true, mIsAsync, mIsDefer, true,
+          mIsLinkPreload);
+      break;
+    case eSpeculativeLoadStyle:
+      aExecutor->PreloadStyle(
+          mUrlOrSizes, mCharsetOrSrcset, mCrossOriginOrMedia,
+          mReferrerPolicyOrIntegrity,
+          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+          mIsLinkPreload);
+      break;
+    case eSpeculativeLoadManifest:
+      aExecutor->ProcessOfflineManifest(mUrlOrSizes);
+      break;
+    case eSpeculativeLoadSetDocumentCharset: {
+      NS_ASSERTION(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+                           .Length() == 1,
+                   "Unexpected charset source string");
+      int32_t intSource =
+          (int32_t)mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+              .First();
+      aExecutor->SetDocumentCharsetAndSource(WrapNotNull(mEncoding), intSource);
+    } break;
+    case eSpeculativeLoadSetDocumentMode: {
+      NS_ASSERTION(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+                           .Length() == 1,
+                   "Unexpected document mode string");
+      nsHtml5DocumentMode mode =
+          (nsHtml5DocumentMode)
+              mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+                  .First();
+      aExecutor->SetDocumentMode(mode);
+    } break;
+    case eSpeculativeLoadPreconnect:
+      aExecutor->Preconnect(mUrlOrSizes, mCrossOriginOrMedia);
+      break;
+    case eSpeculativeLoadFont:
+      aExecutor->PreloadFont(mUrlOrSizes, mCrossOriginOrMedia,
+                             mReferrerPolicyOrIntegrity);
+      break;
+    case eSpeculativeLoadFetch:
+      aExecutor->PreloadFetch(mUrlOrSizes, mCrossOriginOrMedia,
+                              mReferrerPolicyOrIntegrity);
+      break;
+    default:
+      MOZ_ASSERT_UNREACHABLE("Bogus speculative load.");
+      break;
+  }
+}