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-rw-r--r--parser/html/nsHtml5SpeculativeLoad.cpp158
1 files changed, 158 insertions, 0 deletions
diff --git a/parser/html/nsHtml5SpeculativeLoad.cpp b/parser/html/nsHtml5SpeculativeLoad.cpp
new file mode 100644
index 0000000000..f7994495a6
--- /dev/null
+++ b/parser/html/nsHtml5SpeculativeLoad.cpp
@@ -0,0 +1,158 @@
+/* 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),
+ mIsError(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 ||
+ mOpCode == eSpeculativeLoadMaybeComplainAboutCharset)) {
+ 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, mCrossOrigin, mMedia, mCharsetOrSrcset,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mReferrerPolicyOrIntegrity, mIsLinkPreload, mInitTimestamp);
+ break;
+ case eSpeculativeLoadOpenPicture:
+ aExecutor->PreloadOpenPicture();
+ break;
+ case eSpeculativeLoadEndPicture:
+ aExecutor->PreloadEndPicture();
+ break;
+ case eSpeculativeLoadPictureSource:
+ aExecutor->PreloadPictureSource(
+ mCharsetOrSrcset, mUrlOrSizes,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mMedia);
+ break;
+ case eSpeculativeLoadScript:
+ aExecutor->PreloadScript(
+ mUrlOrSizes, mCharsetOrSrcset,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
+ mScriptReferrerPolicy, false, mIsAsync, mIsDefer, false,
+ mIsLinkPreload);
+ break;
+ case eSpeculativeLoadScriptFromHead:
+ aExecutor->PreloadScript(
+ mUrlOrSizes, mCharsetOrSrcset,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
+ mScriptReferrerPolicy, true, mIsAsync, mIsDefer, false,
+ mIsLinkPreload);
+ break;
+ case eSpeculativeLoadNoModuleScript:
+ aExecutor->PreloadScript(
+ mUrlOrSizes, mCharsetOrSrcset,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
+ mScriptReferrerPolicy, false, mIsAsync, mIsDefer, true,
+ mIsLinkPreload);
+ break;
+ case eSpeculativeLoadNoModuleScriptFromHead:
+ aExecutor->PreloadScript(
+ mUrlOrSizes, mCharsetOrSrcset,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
+ mScriptReferrerPolicy, true, mIsAsync, mIsDefer, true,
+ mIsLinkPreload);
+ break;
+ case eSpeculativeLoadStyle:
+ aExecutor->PreloadStyle(
+ mUrlOrSizes, mCharsetOrSrcset, mCrossOrigin, mMedia,
+ mReferrerPolicyOrIntegrity,
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
+ mIsLinkPreload);
+ break;
+ case eSpeculativeLoadManifest:
+ // TODO: remove this
+ break;
+ case eSpeculativeLoadSetDocumentCharset: {
+ MOZ_ASSERT(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+ .Length() == 1,
+ "Unexpected charset source string");
+ nsCharsetSource enumSource =
+ (nsCharsetSource)
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+ .First();
+ aExecutor->SetDocumentCharsetAndSource(WrapNotNull(mEncoding),
+ enumSource);
+ if (mCommitEncodingSpeculation) {
+ aExecutor->CommitToInternalEncoding();
+ }
+ } 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, mCrossOrigin);
+ break;
+ case eSpeculativeLoadFont:
+ aExecutor->PreloadFont(mUrlOrSizes, mCrossOrigin, mMedia,
+ mReferrerPolicyOrIntegrity);
+ break;
+ case eSpeculativeLoadFetch:
+ aExecutor->PreloadFetch(mUrlOrSizes, mCrossOrigin, mMedia,
+ mReferrerPolicyOrIntegrity);
+ break;
+ case eSpeculativeLoadMaybeComplainAboutCharset: {
+ MOZ_ASSERT(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+ .Length() == 2,
+ "Unexpected line number string");
+ uint32_t high =
+ (uint32_t)
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+ .CharAt(0);
+ uint32_t low =
+ (uint32_t)
+ mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
+ .CharAt(1);
+ uint32_t line = (high << 16) | low;
+ aExecutor->MaybeComplainAboutCharset(mMsgId, mIsError, (int32_t)line);
+ } break;
+ default:
+ MOZ_ASSERT_UNREACHABLE("Bogus speculative load.");
+ break;
+ }
+}